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Request for retransmission

Subclass of:

714 - Error detection/correction and fault detection/recovery

714699000 - PULSE OR DATA ERROR HANDLING

714746000 - Digital data error correction

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
714749000 Retransmission if no ACK returned 152
714751000 Including forward error correction capability 83
714750000 Feedback to transmitter for comparison 24
Entries
DocumentTitleDate
20110179329APPARATUS AND METHOD FOR SETTING HYBRID AUTOMATIC REPEAT REQUEST AND AUTOMATIC REPEAT REQUEST PARAMETER IN MOBILE COMMUNICATION SYSTEM - An apparatus is capable of setting HARQ and ARQ parameters in a mobile communication system. The apparatus sets HARQ and ARQ parameters in a mobile communication system. The apparatus sets a default HARQ parameter based on the determined default HARQ parameter setting condition determined by using a plurality of QCIs. The apparatus sets a default ARQ parameter based on the determined default ARQ parameter setting condition determined by using the plurality of QCIs, and updates the set default HARQ parameter and the set default ARQ parameter according to a channel status of a UE.07-21-2011
20100023828IP Multicast with IP Unicast/Multicast Error Correction - A method of delivering digital information includes joining a multicast group, and receiving a segment from a server directed to the multicast group. Further, the method further includes determining a transmission error has occurred resulting in an incomplete segment, and sending an error notification to the server requesting retransmission of at least a portion of the incomplete segment. Additionally, the method includes receiving a retransmission of the at least a portion of the incomplete segment. The at least a portion of the incomplete segment may be received through an IP unicast connection or as a multicast retransmission.01-28-2010
20100058132METHOD AND APPARATUS FOR POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for power control of the re-transmission data packet in a wireless communication system is disclosed. A first wireless communication device is provided that receives (03-04-2010
20100050036METHOD FOR TRANSMITTING AND RECEIVING DATA ACCORDING TO HARQ PROCESS ADN MOBILE COMMUNICATION TERMINAL THEREOF - Disclosed herein is transmission/reception of data according to a hybrid automatic repeat request (HARQ) process. A method for transmitting data includes, at a transmission side, mapping at least one HARQ process to at least one logical channel, and transmitting a control signal including information associated with the mapping result to a reception side. Accordingly, it is possible to efficiently use a radio resource and reduce unnecessary overhead.02-25-2010
20110202813ERROR CORRECTION AND RECOVERY IN CHAINED MEMORY ARCHITECTURES - Electronic apparatus, systems, and methods to construct and operate the electronic apparatus and/or systems include a memory unit configured to receive data flow from two directions. The memory unit can be configured serially in a chain with other memory units. The chain can include an error check and correcting unit (ECC). Additional apparatus, systems, and methods are disclosed.08-18-2011
20100077273PACKET RETRANSMISSION CONTROL METHOD AND APPARATUS IN MULTICAST COMMUNICATION - In a multicast distribution system in which terminal devices on a distribution path are hierarchically grouped, a first terminal device which has detected a loss of a receiving packet transmits to a second terminal device located upstream of the first terminal device a retransmission request for a packet retransmission to the first terminal device and a third terminal device which receives a packet first in a group located downstream of a group to which the first terminal device belongs. The second terminal device which has received the retransmission request transmits a retransmission packet to both the first and third terminal devices.03-25-2010
20100077272HARDQ SYNCHRONIZATION METHOD FOR LTE - A method and apparatus according to the present invention addresses and/or prevents lost protocol synchronization in HARQ systems caused by ACK/NACK errors. One embodiment detects lost synchronization errors for NDI-based retransmission protocols and restores synchronization by sending an explicit RESET message. In response to the RESET message, the transmitter aborts the transmission of a current PDU and transmits a new PDU and corresponding NDI. Another embodiment prevents protocol synchronization errors by sending scheduling grants on a packet by packet basis. The receiver sends a subsequent explicit scheduling grant to the transmitter based on an error evaluation of a received PDU. The transmitter will not send the next PDU unless it receives the subsequent explicit scheduling grant.03-25-2010
20100115360METHODS OF TRANSMITTING DATA USING A PLURALITY OF HARQ PROCESS CHANNESL SEQUENTIALLY - Methods of transmitting data using a plurality of hybrid automatic repeat request (HARQ) process channels sequentially is disclosed. One of the methods of transmitting data through a plurality of HARQ process channels including a first channel and a second channel includes adding offset to a retransmission data block if the first channel which will transmit the retransmission data block is prescheduled (S05-06-2010
20100115357Novel Architecture for a Message Bus - An aspect of the present invention reduces the additional number of signal lines of a bus (05-06-2010
20130080851METHOD AND APPARATUS FOR SELECTIVE ACKNOWLEDGEMENT - A transceiving unit receives at least one sequence of data blocks where the data blocks each have a respective sequence number. The receipt of the data blocks is monitored to establish whether the data blocks have been successfully received or not. A receipt report is selectively generated based at least in part on the performed monitoring. The receipt report includes at least one data part in accordance with a predetermined data format, which includes at least a first data portion with information identifying a sequence number of one data block in the sequence that has not been successfully received and a second data portion with information on whether successful receipt has been achieved for a number of data blocks in the sequence having sequence numbers following directly after the identified sequence number. The receipt report is provided in a generated data block that is transmitted.03-28-2013
20090172490DATA RETRANSMISSION METHOD AND WIRELESS COMMUNICATION APPARATUS - A data retransmission method for retransmitting a data using a wireless communication, including: receiving data transmitted from a transmitting apparatus; determining whether the received data is correct or not; transmitting data including information indicating that the received data is received correctly to the transmitting apparatus upon being determined the received data is correct, and transmitting data including information indicating that the received data is not received correctly to the transmitting apparatus upon being determined the received data is not correct; measuring an elapsed time from transmission of the data including information indicating that the received data is not received correctly; and monitoring whether to receive data corresponding to the received data from the transmitting apparatus before the elapsed time reaches a predetermined time.07-02-2009
20130036338METHOD FOR EFFICIENT CONTROL SIGNALING OF TWO CODEWORD TO ONE CODEWORD TRANSMISSION - In a wireless communication system (02-07-2013
20100042886RETRANSMISSION RESOURCE ALLOCATION METHOD FOR WIRELESS COMMUNICATION SYSTEM - A retransmission resource allocation method and apparatus for a wireless communication system for allocating a retransmission resource using a semi-persistent resource allocation message indicating a retransmission resource allocation is provided. The method includes receiving, at a mobile terminal, a semi-persistent resource allocation message; determining whether the semi-persistent resource allocation message indicates a retransmission resource allocation or a semi-persistent resource allocation, based on usage information included in the semi-persistent resource allocation message; and executing, when the semi-persistent resource allocation message indicates the retransmission resource allocation, a retransmission operation based on resource assignment information included in the semi-persistent resource allocation message.02-18-2010
20100042885Method and Apparatus for Maximizing Wireless Bandwidth During Ad Transmission with Forward Error Correction (FEC) - The number of times a single ad file must be sent for reception by a plurality of mobile hand held devices (MHDDs) without any error is reduced by the use of forward error correction (FEC) to achieve statistical coverage of a complete ad file download02-18-2010
20100042884Method and Apparatus of Handling TTI Bundling - A method for handling a Transmission Time Interval (TTI) bundling mode in a user equipment (UE) of a wireless communication system is disclosed. The method includes steps of switching an operation status of the TTI bundling mode; and flushing all uplink Hybrid Automatic Repeat Request (HARQ) buffers in the UE when the operation status of the TTI bundling mode is switched.02-18-2010
20100042883Retransmission - Embodiments related to retransmission are described and depicted.02-18-2010
20100042882Packet Retransmissions - A method of packet retransmission in a communications system having a plurality of user devices and at least one network device involves broadcasting a multimedia broadcast multicast service transmission to the plurality of user devices. One or more of the user devices which failed to receive the complete transmission correctly send a request for retransmission to the network device and the network device retransmits requested packets of the original transmission on a different transmission channel to the original broadcast channel.02-18-2010
20100042881Management of ARQ Detection Threshold in Communication Networks - Embodiments of a system and methodology are disclosed for enabling a network to manage threshold values provided to UEs for use in decoding ACK-NAK signals. In various embodiments described herein, a base station signals an actual fixed threshold value in a semi-static manner for use by UEs to decode ACK/NAK signals. In these embodiments, the threshold value is part of a semi-static but UE-specific threshold value. This allows the base station to accommodate varying UE geometries, and optimize power savings for ACK-NAK transmissions. Embodiments of the invention also allow the base station to enforce a desired quality of service (QoS) without excessive power variations across ACK/NAK which are limited by the transmit power dynamic range.02-18-2010
20090158110FORWARD AND REVERSE SHIFTING SELECTIVE HARQ COMBINING SCHEME FOR OFDMA SYSTEMS - A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an OFDM/OFDMA receiver are provided. A combination of different types of HARQ combiners may be designed into the receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques. Furthermore, the HARQ combiner type may be dynamically selected through forward and reverse shifting between the different types of HARQ combining schemes in an effort to decrease the bit error ratio (BER) without saturating the HARQ buffer.06-18-2009
20090158109SELECTIVE HARQ COMBINING SCHEME FOR OFDM/OFDMA SYSTEMS - A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages at different stages in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. The type of HARQ combiner used for a particular channel may depend on a number of selection criteria including the modulation order of the transmission, the number of bits needed for the combined signals, and the headroom in the HARQ buffer. For some embodiments, a combination of different types of HARQ combiners may be designed into a receiver and selected on a per-channel basis. Proper selection of a HARQ combining scheme may reduce the required HARQ buffer size and may provide an increased combining gain when compared to conventional HARQ combining techniques.06-18-2009
20100107029Wireless communication apparatus and wireless communication method - A wireless communication system includes a transmitting side equipped with a microcomputer for control, for transmitting data and also includes a receiving side for receiving data. To prevent the receiving side from receiving identical data more than once, a sequence number is automatically incremented every time a frame of transmit data is transmitted. The sequence number is transmitted together with the data. The next process is performed if it is determined that transmission is correctly performed, or the data is transmitted again without incrementing the sequence number if it is determined that the transmission is not correctly performed. The sequence number is returned to an initial value when the microcomputer for control is reset, and dummy data is transmitted together with the initial value immediately after a reset. The data is transmitted together with an incremented sequence number after transmission of the dummy data.04-29-2010
20100107028METHOD AND APPARATUS FOR H-ARQ SCHEDULING IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate Hybrid Automatic Repeat Request (H-ARQ) scheduling and coordination in a wireless communication system. As described herein, a network node capable of cooperation with other nodes for communication to respective users can coordinate a cooperation strategy across nodes based on a H-ARQ protocol to be utilized for a given user. In the case of a synchronous H-ARQ protocol, communication can be scheduled as described herein such that initial transmissions to a user are conducted cooperatively and re-transmissions are conducted without inter-node cooperation. In the case of a H-ARQ protocol utilizing persistent assignments, transmission intervals can be calculated and utilized based on application latency requirements, backhaul link latency, or other factors. In the case of an asynchronous H-ARQ protocol, repeat transmissions can be coordinated in a similar manner to initial transmissions or conducted without inter-node cooperation based on latency sensitivity of an associated application.04-29-2010
20090125777WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - When a determination section of a reception apparatus determines that a control channel is intended for the reception apparatus, a comparing section of the reception apparatus compares control information transmitted on the control channel with a reception capability of the reception apparatus. A data channel reception section of the reception apparatus receives a data channel when the control information is within the reception capability of the reception apparatus, but does not receive the data channel when the control information exceeds the reception capability of the reception apparatus. When the control information exceeds the reception capability of the reception apparatus, the transmission section does not transmit an ACK signal and a NACK signal with respect to the data channel.05-14-2009
20090125776Method for providing multicast service in a wireless communication system and system thereof - A method is provided for providing a multicast service by a base station (BS) in a wireless communication system. The method includes transmitting an N05-14-2009
20090125775Method and apparatus for Automatic Repeat reQuest (ARQ) in broadband wireless access system - An apparatus and a method for Automatic Repeat reQuest (ARQ) in a broadband wireless access system are provided. The method includes driving a timer which operates by a preset period to synchronize ARQ between the transmitter and a receiver; after transmitting data to the receiver without error, when a driving time of the timer expires, checking whether there is data to transmit to the receiver; when there is no data to transmit to the receiver, initializing the timer; and transmitting an ARQ reset message to the receiver. Hence, the air resource consumption and the power consumption in ARQ reset can be lowered by reducing unnecessary ARQ reset.05-14-2009
20090125774METHOD OF DATA TRANSMISSION USING HARQ - A method of transmitting data from a user terminal to a base station using a hybrid automatic repeat request (HARQ) scheme with a plurality of redundancy versions of said data, each of the redundancy versions (RV) indicating a transmission start position of a data block in a circular buffer is disclosed. For each retransmission, the redundancy version to be used by considering the previously used redundancy version and a predetermined sequence is determined. Within one sequence, at least two redundancy versions following each other have non consecutive start positions.05-14-2009
20090125773APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING CONTENT IN A MOBILE COMMUNICATION SYSTEM - A method for delivering/receiving content in a mobile communication system. A terminal sends a Content Delivery Repair Request message requiring repair of the content to a server, when reception of the content provided from the server is not normally carried out; and receives a Content Delivery Repair Response message from the server in response to the Content Delivery Repair Request message. The server receives a Content Delivery Repair Request message from the terminal, when reception of the content is not normally carried out at the terminal, and sends a Content Delivery Repair Response message in response to the Content Delivery Repair Request message.05-14-2009
20090044068Method and device for counting transmission times of data unit, transmission device, and computer program - A method for counting correctly substantial transmission times of a data unit such as an RLC-PDU even if the data unit is divided before being transmitted is provided. The method includes the steps of preparing a counter for the RLC-PDU (#02-12-2009
20090044067WIRELESS COMMUNICATION APPARATUS, TRANSMITTING METHOD AND RECEIVING METHOD - A wireless communication apparatus having a retransmission control unit configured to refer to identification information added to received retransmit data when a second retransmit request is performed after the first transmit request is performed, and not to use the received retransmit data for forming data when the received retransmit data corresponds to the first retransmit request based on the identification information, and to use the received retransmit data for forming data when the received retransmit data corresponds to the second retransmit request based on the identification information.02-12-2009
20090044066System and Method for Implementing a Subrate Recovery for Lost Packets in a Communications Environment - A method for communicating data is provided that includes receiving a plurality of bits associated with a communications flow and recovering data lost from a packet by retransmitting selected subrate data for a lost sample over a specified time period. The method may further include transmitting one additional subrate for each sample. All data is generally retransmitted in a configured time interval and the additional subrate for each sample is transmitted every twenty milliseconds. In still other embodiments, the method includes skipping over any subrates that have already been transmitted within a recovery interval. In one implementation of the present invention, if any subrates had changed and had already been transmitted within the time period, there is no retransmit operation performed. If a lost packet is detected for a sample already in recovery, the time period is reset and a recovery process is initiated again.02-12-2009
20090044065RETRANSMITTING METHOD, RADIO RECEIVING APPARATUS, AND MULTIANTENNA RADIO COMMUNICATION SYSTEM - A retransmitting method, a radio receiving apparatus and a multiantenna communication system that are capable of improving the system throughput. According to this method, the receiving apparatus determines whether a received substream has an error and hence a retransmittal is necessary (02-12-2009
20110010597METHOD AND ARRANGEMENT IN A COMMUNICATION NETWORK SYSTEM - The present invention relates to a method and an arrangement for enabling an efficient radio resources utilization in a communication network system comprising a communication network node (01-13-2011
20090307555Signaling Reserved Hybrid Automatic Repeat Request Information for Downlink Semi-Persistent Scheduling - A method is provided for reuse of one of a plurality of hybrid automatic repeat request (HARQ) Process ID. The method includes receiving signaling used to associate at least one of the plurality of HARQ Process IDs with semi-persistent scheduling. The method further includes determining an activation of a semi-persistent resource. The method further includes associating the at least one of the plurality of HARQ Process IDs with the semi-persistent resource. The method further includes receiving a non-semi-persistent data communication utilizing the at least one of a plurality of HARQ Process IDs.12-10-2009
20090307553RADIO COMMUNICATION APPARATUS AND METHOD USED IN MOBILE COMMUNICATION SYSTEM - A radio communication apparatus including a retransmission control function, includes: determination means configured to determine whether a result of error detection performed in a communication partner side for a first packet after transmitting the first packet to the communication partner is positive acknowledgement or negative acknowledgement; request means configured to request a following second packet from an upper layer when the result of error detection is determined to be positive acknowledgement; and means configured to transmit dummy data to the communication partner as a following second packet when the first packet is the last packet. When the determination determining that the result of error detection is positive acknowledgement is incorrect, a system frame number used when transmitting the dummy data is reported from the communication partner, so that the first packet is retransmitted.12-10-2009
20090307552RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE - One object of the present invention is to provide a simple layer 12-10-2009
20090106618TURBO ENCODER AND HARQ PROCESSING METHOD APPLIED FOR THE TURBO ENCODER - A turbo encoder is provided to be capable of improving its performance in the case that the redundancy is low. A first constituent encoder (04-23-2009
20120192024Smart Aging Retry Buffer - A method and controller for sending data frames over a lossy bidirectional link between integrated circuit chips is disclosed. Upon transmission, frames are stored in a buffer. The detection of errors is indicated and triggers retransmission of the erroneously received frame, but acknowledgement of correctly received frames is not indicated. Instead, the sending controller assumes that frames were correctly received if no error indication is received after a period of time. The period of time is the maximum amount of time that would be taken for the sending controller to receive an error indication if the frame was received with an error. After said period of time, the sent frame is discarded from the buffer.07-26-2012
20130073919INFORMATION PROCESSING SYSTEM, TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND METHOD OF PROCESSING INFORMATION - An information processing system including a transmitting apparatus that sends packet data through a plurality of routes and a receiving apparatus that receives the packet data sent through the plurality of routes, is disclosed. The transmitting apparatus includes a common section that, in response to a request to retransmit the divided piece of the data from the receiving apparatus, makes transmitters retransmit data stored in a transmission buffer, together with information indicating retransmission. The receiving apparatus includes a resend requester that, in response to detecting an error in data received by one of the plurality of receivers, requests the transmitting apparatus to retransmit data that have not been received successfully.03-21-2013
20130061105METHOD OF AN UPLINK HARQ OPERATION AT AN EXPIRY OF TIME ALIGNMENT TIMER - Disclosed is the radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, to a method of an uplink HARQ (Hybrid Automatic Repeat reQuest) operation at an expiry of time alignment timer in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.03-07-2013
20090300451Frame transferring apparatus and frame transferring system - A frame transferring apparatus includes a check-frame storage unit that has temporarily stored therein a reception check frame; a check-frame transmitting unit that transmits a transmission check frame to another frame transferring apparatus; a check-frame discarding unit that, when a storage space for storing the reception check frame is left in the check-frame storage unit, stores the reception check frame in the check-frame storage unit and, when no storage space is left, discards the reception check frame; a transferring-apparatus-information obtaining unit that obtains frame-transferring-apparatus information; a checking unit that checks a non-arrival of a frame based on the frame-transferring-apparatus information; a retransmission requesting unit that, when the reception check frame is discarded, requests the frame transferring apparatus of a transmission source of the discarded check frame to retransmit a check frame; and a check-frame retransmitting unit that, when accepting a request for retransmitting the transmission check, retransmits the check frame.12-03-2009
20090271680COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND DATA FRAME RETRANSMISSION CONTROL METHOD - A mobile station device (10-29-2009
20090271679RETRANSMISSION CONTROL METHOD AND RECEIVING-END APPARATUS - A retransmission control method according to the present invention includes; transmitting, at a transmitter side apparatus 10-29-2009
20090031183RETRANSMISSION CONTROL SCHEME AND WIRELESS COMMUNICATION APPARATUS - A retransmission control scheme and a wireless communication apparatus wherein the efficiency of retransmission control is enhanced to further improve the system throughput. In this wireless communication apparatus (01-29-2009
20120117437ENCODING UPLINK ACKNOWLEDGMENTS TO DOWNLINK TRANSMISSIONS - A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a plurality of data blocks, such that each of the data blocks include an associated cyclic redundancy check (CRC), and a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks. The portable device further includes a transmitter for transmitting a response sequence which indicates the received status of all of the data blocks.05-10-2012
20110022919Wireless Communication System, Wireless Communication Device and Wireless Communication Method - One object of the present invention is to improve stability of wireless communication by effectively requesting retransmission of data to a wireless communication device, which is a data transmission source, by switching ARQ and HARQ if an error has been detected in received data.01-27-2011
20110022918METHOD FOR TRANSMITTING DATA USING HARQ - A data transmission method using an HARQ includes transmitting a first transmission block which is a portion of bit streams of a mother codeword, receiving a retransmission request with respect to the mother codeword, and transmitting a second transmission block which is a bit stream subsequent to the first transmission block, according to the retransmission request, wherein a modulation order obtained from a first range of a modulation order product code rate (MPR) is applied to the first transmission block, a modulation order obtained from a second range of the MPR according to the number of retransmissions is applied to the second transmission block, and the second range of the MPR is adjusted as much as a linear offset to the first range.01-27-2011
20110022917Protocols for Multi-Hop Relay System with Centralized Scheduling - Various example embodiments are disclosed herein. In an example embodiment, a method of transmitting data via a wireless transmission path that may include a user equipment as a first end point, a base station as second end point, and at least one relay station as an intermediate point(s). The method may include receiving a data transmission from a prior point in the transmission path. Substantially simultaneously: forwarding the received data to the next point in the transmission path, and determining if the received data is corrupt. Transmitting a transmission message to the next point in the transmission path indicating whether or not the received data was corrupt. And, if the data is not corrupt, transmitting a receipt message to the prior point indicating that the data was uncorrupt when received.01-27-2011
20110022916METHOD AND SYSTEM FOR SAVING POWER FOR PACKET RE-TRANSMISSION IN AN ENCRYPTED BLUETOOTH LOW POWER LINK LAYER CONNECTION - A Bluetooth low power (BLE) receiver receives a data packet in an encrypted link layer connection from a BLE transmitter. The data packet comprises a transmitted protocol data unit (PDU) and associated cyclic redundancy code (CRC). The PDU comprises a message integrity code (MIC). The BLE receiver determines a connection SNR. In a high connection SNR condition, the BLE receiver determines packet retransmission based on MIC verification without CRC checking. A MIC indication is generated by comparing a local MIC and the MIC in the received data packet. CRC checking is turned on or off for power saving based on the MIC indication and connection SNR. In a high connection SNR, the BLE receiver determines, without CRC checking, to retransmit the received data packet for a MIC failure indication. The local MIC is calculated using a shared secret Encryption Key of 32-bit, 64-bit or 128-bit derived from multiple entropy pools.01-27-2011
20110022915Data Processing In Signal Transmissions - A controller for a communications device, comprising: a receiver arranged for receiving a first data block and a second data block, each data block comprising a plurality of analogue signals; a digitizer arranged for converting each analogue signal into a digital value and marking each digital value as saturated when the digital value exceeds a digital range; and a processor arranged for modifying at least one digital value of the first block by combination with a corresponding digital value of the second block except where the digital value of the first block is marked as saturated and marking each modified value as saturated when the modified value is outside a defined range.01-27-2011
20090235137COMMUNICATION APPARATUS, COMMUNICATION METHOD AND PROGRAM - A communication apparatus includes an error detection unit conducting error detection on N packet data units received in N transmission processes; a first transmission unit transmitting an affirmative response signal or a first retransmission request signal depending on a result of the error detection; a storage unit storing an affirmatively responding packet for forwarding to an upper layer; a second transmission unit, if affirmatively responding packets are not consecutive, determining whether a missing packet must be retransmitted and transmitting a second retransmission request signal; and a forwarding unit reordering the packet data units and forwarding the packets in the storage unit to the upper layer.09-17-2009
20120272114MEMORY CONTROLLER, MEMORY SYSTEM, AND OPERATING METHOD - A memory controller and method of operating same are described. The memory controller includes a central processing unit providing re-transmission control signal, an error check block determining whether an error exists in data received from a host and generating a corresponding error check signal, and a re-transmission request unit receiving the control signal and the error check signal, communicating a request to the host for an error-correcting re-transmission operation when an error exists in the received data, and communicating a request for an extending re-transmission operation when error does not exist in the received data.10-25-2012
20090013232Method and Arrangement For Harq in Wireless Multi-Carrier Systems - The present invention relates to automatic repeat request (ARQ) in wireless communication systems wherein a coded message block is spread over a plurality of sub-carriers or components. According to the invention an equalizing HARQ method is introduced. The equalizing HARQ identifies (01-08-2009
20090006920BULK DATA TRANSFER - This disclosure relates to network data communication. Some embodiments include initiating a network connection between an original source and an ultimate destination, transmitting a block of data from the original source to the ultimate destination on the network, requesting retransmission of lost blocks from the ultimate destination to the source and retransmitting the lost blocks from source to the ultimate destination. These embodiments further include measuring round-trip time of a retransmit request, the round-trip time measured from a time of transmission of a retransmit request from the ultimate destination to a time of reception at the ultimate destination after retransmission from the original source and setting the round-trip time as a minimum retransmission request time for the network connection, wherein the round-trip time includes latencies of the network connection and in data processes at the original source and at the ultimate destination.01-01-2009
20130166981APPARATUS AND SECURITY SYSTEM FOR DATA LOSS PREVENTION, AND OPERATING METHOD OF DATA LOSS PREVENTION APPARATUS - Disclosed are a DLP security system and an operating method thereof. An operating method of a data loss prevention (DLP) apparatus, comprising: converting, into packets, Ethernet signals received from a fail over device that are transmitted and received between an external network and internal network; analyzing the packets to classify the packets into first packets required to be precisely judged and second packets not required to be precisely judged; distributing and allocating a judgment job about the first packet to at least one in-line instance according to a predetermined reference; and allocating the judgment job distributed to the in-line instance in which a fail occurs to the in-line instance which is normally operated when it is verified whether there is an in-line instance which is normally operated in the case where the fail occurs in the at least one in-line instance.06-27-2013
20080301514Realization Method for Harq in Multiple Frequency Points Cell - The present invention relates to a method for realizing HARQ in multi-carrier cell, comprising: when distributing high-speed shared resource for UE, Node B distributes the high-speed downlink packet service to N frequencies, and reports the information of the established physical channel, including the frequency information, to RNC and said UE; after Node B establishes the high-speed shared resource for said UE at N frequencies, it establishes N HARQ sub-entities on the HARQ entity built for said UE, each sub-entity independently processes the high-speed downlink packet service at one frequency; correspondingly, said UE also establishes N HARQ sub-entities on the HARQ entity; Node B configures parameters for each HARQ sub-entity and notifies the configuration information to RNC and said UE through upper-level signaling; Node B and UE complete their configuration for each sub-entity of HARQ entity according to the information, and realize the HARQ function in the service. The present invention can realize HARQ function on multiple frequencies simultaneously and is compatible with current protocol in TD-SCDMA system that utilizes multi-carrier HSDPA technique.12-04-2008
20080301513METHODS AND APPARATUS TO REDUCE ERRORS DURING A RE-TRANSMISSION - Methods and apparatus to reduce errors during a re-transmission performed by a communication module are disclosed. An example method includes detecting an error in received data, predicting a time interval that is expected to be substantially error-free, and transmitting a re-transmission request message for the data based on the time interval.12-04-2008
20080294958Method of Transmitting Control Information in Wireless Communication System and Transmission Window Updating Method Using the Same - A method of transmitting control information in a wireless communication system and transmission window updating method using the same are disclosed, by which transmission efficiency in a transmitting side can be enhanced. The present invention includes the steps of receiving a first control information block including a first status report information from a receiving side, the first status information providing reception acknowledge information for a plurality of data blocks transmitted to the receiving side, receiving a second control information block including a second status report information placed as a last status report information in the second control information block, and updating the transmission window using the reception acknowledge information in the first status report information.11-27-2008
20110029832EFFICIENT ERROR CORRECTION SCHEME FOR DATA TRANSMISSION IN A WIRELESS IN-BAND SIGNALING SYSTEM - In one example, a mobile device segments a payload for transmission to a remote server and provides redundant data for each payload segment. The remote server examines the received payload on a per segment basis using the redundant data to identify segments associated with errors. The server then requests error correction bits for the identified segments using one or more exchanges with the mobile device. Thereafter, the server can perform error correction using the received error correction bits and then request re-transmission of the payload, if needed.02-03-2011
20100275086Prescheduled Retransmission for Initial Establishment - The invention relates to a method for a wireless communications network for data packet communication, the communications network comprises a user equipment (UE) and a transceiver node (eNodeB). The user equipment (UE) and the node (eNodeB) intercommunicates over an air interface communication link. The user equipment (UE) transmits a first message (MSG3) in a first scheduled transmission in a random access procedure during setup of the communication link. The invention is characterized in that the first message is transmitted in a first sub frame (TTI=3) and in a second sub frame (TTI=4; TTI=5) within a first roundtrip time (RTT) in a first HARQ-process triggered by the transmission of the first message in the first sub frame (TTI=3). The invention also relates to a wireless communications network for data packet communication.10-28-2010
20120089882PACKET COMBINING DEVICE AND METHOD FOR COMMUNICATION SYSTEM USING HYBRID AUTOMATIC REPEAT REQUEST - A packet combining device for a communication system using hybrid automatic repeat request (HARQ) includes: a HARQ buffer; a combiner configured to combine data which is previously received and stored in the HARQ buffer with newly-received data; and a channel decoder configured to attempt channel decoding by using the combined received data provided from the combiner and provide one or more of log likelihood ratios (LLRs) computed for a systematic bit and a parity bit of the combined received data to the combiner such that the one or more LLRs are combined with the data used for channel decoding.04-12-2012
20080288845Range Extension and Noise Mitigation For Wireless Communication Links Utilizing a CRC Based Single and Multiple Bit Error Correction Mechanism - A novel and useful range extension and in-band noise mitigation mechanism that uses conventional CRC error detection codes to correct single and multiple bit errors in packets received over a communications link. The CRC error correction mechanism of the invention is particularly suitable for use with communication protocols with weak error correction capabilities. The mechanism uses the linearity property of the CRC calculation to detect the existence of errors in the received packet. The entire received packet is searched for single bit errors and are corrected in a single cycle. If no single bit errors are found, the mechanism then searches for multiple bit errors. Packet retransmissions are used to detect and mark the location of multiple bit errors. Multiple bit errors are corrected by trying a plurality of hypotheses of single bit error corrections. Each hypotheses pattern is investigated to find matching CRC patterns for correction using the single bit, single cycle CRC error correction method.11-20-2008
20090228753WIRELESS COMMUNICATION METHOD AND APPARATUS FOR DETECTING AND DECODING ENHANCED DEDICATED CHANNEL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL TRANSMISSIONS - A wireless communication method and apparatus for detecting and decoding enhanced dedicated channel (E-DCH) hybrid automatic repeat request (H-ARQ) indicator channel (E-HICH) transmissions are disclosed. A wireless transmit/receive unit (WTRU) receives E-HICH transmissions and detects an H-ARQ indicator transmitted via the E-HICH by performing a binary hypothesis test. The WTRU then generates an acknowledgement (ACK) message or a non-acknowledgement (NACK) message based on the detected H-ARQ indicator. A reliability test may be further performed to improve performance, whereby the binary hypothesis test may be performed only if the reliability test is passed.09-10-2009
20100146352COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus which can communicate a data packet, a recovery packet used to recover a data packet that failed to be communicated, and a retransmit packet for the data packet that failed to be communicated, the communication apparatus includes a determining unit configured to determine, when a first packet of a plurality of packets that failed to be communicated is normally communicated, a packet that can be recovered, from among the plurality of the packets that failed to be communicated based on the first packet and the normally communicated recovery packet, and a retransmit determination unit configured to determine not to retransmit at least a part of the plurality of packets that can be recovered, when the first data packet is retransmitted which is determined to recover a plurality of data packets if it is normally communicated.06-10-2010
20090313517RETRANSMISSION SCHEME FOR COMMUNICATION SYSTEMS - One embodiment relates to a method of transmitting data from a transmitter to a receiver. In the method, a payload data stream is provided which comprises a plurality of payload data units. A container stream is formed which comprises a plurality of containers having respective container identifiers, where a container includes an integer number of the payload data units and where the container identifiers collectively establish a predetermined order for consecutive containers. A codeword stream is formed which comprises a plurality of codewords having respective redundancy information, where a codeword includes at least a portion of the container and where redundancy information of the codeword facilitates detection of erroneous data in the codeword. The codeword is transmitted from the transmitter to the receiver. Other methods and systems are also disclosed.12-17-2009
20100031110METHODS OF TRANSMITTING AND RECEIVING DATA IN COMMUNICATION SYSTEM - A data transmitting and receiving method is disclosed. In transmitting a response signal for a transmission signal from at least one transmitter, the present invention includes receiving at least one data block from the at least one transmitter, the at least one data block grouped into at least one group and then transmitted by the at least one transmitter, checking whether each data block is successfully received for the at least one data block belonging to the corresponding group per the group, selecting a transmission scheme of transmitting a response signal instructing a presence or non-presence of successful reception of the each data block to the at least one transmitter, and transmitting a response signal for the each data block to the at least one transmitter by the selected response signal transmission scheme. Hence, the present invention reduces overhead of control information necessary for data transmission.02-04-2010
20100023833WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PROCESSING ENHANCED UPLINK SCHEDULING GRANTS - A method for generating a serving grant at a wireless transmit/receive unit is disclosed. An absolute grant channel signal is decoded to obtain an absolute grant from a serving cell. A relative grant channel signal is decoded to obtain a relative grant from a serving radio link set and a relative grant from a non-serving radio link. A first serving grant candidate is generated based on the absolute grant from the serving cell or the relative grant from the serving radio link set. A second serving grant candidate is generated based on the relative grant from the non-serving radio link. The serving grant is generated based on the first serving grant candidate and the second serving grant candidate.01-28-2010
20100023831METHOD AND DEVICE FOR ALLOCATING RESOURCES IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a resource allocation device for minimizing delay of an uplink retransmission resource allocation process in a wireless communication system having a high data rate, and a method thereof. In the method, user data are received and an ACK/NACK state of the received data is determined, and when the NACK state of the received data is determined, retransmission resource allocation is requested, retransmission resources are allocated, and retransmission resource allocation information is generated to be transmitted.01-28-2010
20100169733TRANSMISSION CONTROL METHOD FOR HARQ IN MOBILE COMMUNICATION SYSTEM - A transmission control method for HARQ is provided for improving HARQ performance in a mobile communication system. The transmission control method for Hybrid Automatic Repeat reQuest (HARQ) in a mobile communication system according to the present invention includes receiving an downlink resource assignment message; determining whether configured downlink assignment has been indicated to an HARQ entity since a previously received downlink assignment for a User Equipment's (UE's) Cell-Radio Network Temporary Identifier (C-RNTI) for the same HARQ process; maintaining, if the configured downlink assignment has not been indicated to the HARQ entity, the HARQ process; and processing, if the configured downlink assignment has been indicated to the HARQ entity, the downlink resource assignment message as a resource assignment message for initial transmission.07-01-2010
20100169732Method of Distinguishing Hybrid Automatic Repeat Request Processes and Related Communication Device - A method of distinguishing hybrid automatic repeat request, hereinafter called HARQ, processes for a mobile device of a wireless communication system includes assigning a plurality of HARQ reference numbers corresponding to a plurality of uplink HARQ processes respectively, for identifying each of the plurality of uplink HARQ processes.07-01-2010
20100169731METHOD AND APPARATUS FOR TRANSMITTING DATA, AND A COMMUNICATION SYSTEM - A communication system employs discontinuous transmission to create gaps in transmission during which a transmitting device (07-01-2010
20090222704FORWARD FEEDBACK FOR UL MACRODIVERSITY - A method of controlling a data unit transmission from a sender (09-03-2009
20100115368METHOD AND APPARATUS FOR ASSIGNING HYBRID-AUTOMATIC REPEAT REQUEST PROCESSES - A method and apparatus for assigning a hybrid-automatic repeat request (H-ARQ) process in a wireless transmit/receive unit (WTRU) to support enhanced uplink (EU) data transmission. Configuration parameters for enhanced uplink (EU) operation are received. The configuration parameters include a priority associated with a medium access control for dedicated channel (MAC-d) flow and a maximum number of H-ARQ transmissions associated with the MAC-d flow. Data is selected for transmission over an enhanced dedicated channel (E-DCH) based on a priority of the MAC-d flow, wherein data with the highest priority is selected. On a condition that the selected data is new data that was not previously transmitted, an available H-ARQ process is assigned for supporting transmission of the selected data, and the selected data is transmitted over the E-DCH using the assigned H-ARQ process. On a condition that the selected data was previously transmitted, the selected data is retransmitted over the E-DCH using the same H-ARQ process that was assigned to previously transmit the selected data. A transmission count is incremented in response to transmitting or retransmitting the selected data. A determination is made of whether the transmission count is at least equal to the maximum number of H-ARQ transmissions. The selected data is discarded in response to a determination that the transmission count is at least equal to the maximum number of H-ARQ transmissions.05-06-2010
20100115367METHOD AND APPARATUS FOR IMPROVING UPLINK TRANSMISSION OF TRANSMISSION TIME INTERVAL BUNDLING IN A WIRELESS COMMUNICATION SYSTEM - A method of improving uplink transmission of TTI bundling for a MAC layer of a user equipment in a wireless communication system includes receiving a first signaling and a second signaling, and when a transmission collision happens between a first transmission corresponding to the first signaling and a second transmission corresponding to the second signaling, handling the transmission collision according to a type of the first signaling and a type of the second signaling.05-06-2010
20100115366METHOD FOR TRANSMITTING REAL-TIME STREAMING DATA IN A COMMUNICATIONS SYSTEM AND APPARATUSES UTILIZING THE SAME - A communications system is provided. A first communications device requests one or more dedicated service periods, via a request, to transmit a high rate real-time streaming data. A second communications device receives the request and schedules the dedicated service periods and one or more contention based periods. A third communications device receives the high rate real-time streaming data and requests the first communications device to re-transmit a portion of the high rate real-time streaming data. The request includes information about the high rate real-time streaming data and information pertinent to a probability of re-transmission. The contention based periods are scheduled to provide the first communications device having higher priority over communications devices of the communications system. The first communications device transmits the high rate real-time streaming data using the dedicated service periods, and re-transmits the portion of the high rate real-time streaming data using the contention based periods.05-06-2010
20100115364COMMUNICATION PROTOCOL SYSTEM AND METHOD FOR A DISTRIBUTED-ARCHITECTURE HEATING, VENTILATION AND AIR CONDITIONING NETWORK - The disclosure provides an HVAC data processing and communication network and a method of manufacturing the same. In an embodiment, the network includes a local controller. The local controller is configured to publish a first message to a data bus, and to detect a collision between the first message and a second message published to the data bus. The local controller is further configured to republish the first message in the event that the first message collides with a second message published to the data bus; a bit error results in response to publishing the message.05-06-2010
20100115361EQUIPMENT AND A METHOD FOR BIT COLLECTION IN HYBRID AUTOMATIC REPETITION REQUEST - To achieve a greater system throughput and be compatible with the legacy HSDPA by support of 64QAM and the higher modulation in the HARQ bit collection, an equipment and a method are disclosed. After applying this method and equipment, the new HSDPA system can perform better in system throughput and can be upgraded smoothly.05-06-2010
20090083601DATA TRANSMISSION WITH HARQ AND INTERFERENCE MITIGATION - Techniques for transmitting data with hybrid automatic retransmission (HARQ) and interference mitigation are described. In one design, a transmitter processes a packet of data in accordance with a rate and sends at least one transmission of the packet to a receiver with HARQ. In one design, the transmitter sends a trigger message to the receiver to trigger the receiver to send a request to reduce interference to interfering station(s). The transmitter may send a first transmission of the packet (i) after the trigger message, e.g., in consecutive frames of a single HARQ interlace, or (ii) along with the trigger message in the same frame. The number of transmissions to send for the packet may be dependent on whether the interfering station(s) reduce interference to the receiver. The packet transmission may terminate early if interference mitigation is successful or may terminate late if interference mitigation is unsuccessful.03-26-2009
20090083603Radio Resource Control-Service Data Unit Reception - A method for receiving periodic transmissions of a segmented communication is disclosed. The segmented communication is received and each segment of the segmented communication is examined to determine if the segment is valid. Valid segments are stored, while invalid segments are discarded. Next, it is computed when the invalid segments will be retransmitted. A subsequent transmission of the communication is received and a retransmission of a previously identified invalid segment is extracted, the retransmitted segment being located based on the computation. The retransmitted segment is examined to determine if it is valid.03-26-2009
20090319847USING DIFFERENT PHYSICAL INTERFACE TO REQUEST RETRANSMISSION OF PACKET LOST ON UNIDIRECTIONAL INTERFACE - Packets detected to be lost from a unidirectional interface such as an ATSC tuner are requested from the source or a peer using a different physical interface. The packets may be retransmitted for reception over either interface.12-24-2009
20090150737ACKNOWLEDGMENT PACKET - Various example embodiments are disclosed. According to an example embodiment, a receiving station in a wireless network may receive a plurality of Medium Access Control Packet Data Units (MPDUs) from a transmitting station. Each of the plurality of MPDUs may include a sequence number. The receiving station may also determine which of the plurality of MPDUs were successfully or not successfully received from the transmitting station. The receiving station may also transmit, to the transmitting station, at least one automatic repeat request (ARQ) feedback information element (IE). The at least one ARQ feedback IE may include a number of acknowledgment maps field indicating a number of acknowledgment maps included in the ARQ feedback IE and the indicated number of acknowledgment maps. Each of the acknowledgment maps may include a sequence format field indicating a number of block sequence fields and the indicated number of block sequence fields. Each of the block sequence fields may indicate a sequence length of successive packets which were successfully or not successfully received based on the determining which of the plurality of received MPDUs were successfully received from the transmitting station.06-11-2009
20090150736Outer Coding Framework - The subject matter disclosed herein provides an outer coding framework for minimizing the error rate of packets, such as application data packets used to transmit digital video broadcast data as well as other forms of data. In one aspect, there is provided a method. The method may include determining, based on a cyclic redundancy check, a first erasure table including zero or more erasures; determining a second erasure table; using the first erasure table to locate errors in a frame of packets, when the zero or more erasures of the first erasure table do not exceed a threshold of erasures; and using the second erasure table to locate errors in the frame of packets, when the one or more erasures of the first erasure table do exceed the threshold of erasures. The frame may include the one or more rows encoded using the outer code. The block that is read may be provided to enable an inner code to encode the block before transmission. Related systems, apparatus, methods, and/or articles are also described.06-11-2009
20120110405COMMUNICATION DEVICE - According to one exemplary embodiment, a communication device includes: a receiver which receives a frame including data, a first error detection code for detecting an error of the data, a sequence number of the data, and a second error detection code for detecting an error of the sequence number; a first detector which detects the error of the data using the first error detection code; a second detector which detects the error of the sequence number using the second error detection code; a generator which generates an acknowledgement frame having maximum sequence number information regarding a maximum sequence number in a frame for which the error of the sequence number is not detected, and acknowledgement information representing whether there is an error for data in each frame of which the sequence number being equal to or less than the maximum sequence number; and a transmitter which transmits the acknowledgement frame.05-03-2012
20120110404METHOD AND APPARATUS FOR PERFORMING NON REAL TIME SERVICE IN DIGITAL BROADCAST SYSTEM - Disclosed herein is a non real-time broadcast receiving system. The system includes: a non real-time service decoder dividing received non real-time service content into a transmission block according to a protocol; a service content manager monitoring whether the receive of the non real-time service content stops and acknowledging a schedule regarding whether a portion with errors in the non real-time service content is retransmitted; a memory storing a portion without errors in the non real-time service content; a file checker checking whether errors are produced during the receive of the non real-time service contents and determining whether the portion with errors in the non real-time service content is retransmitted; a retransmission request signal generator generating a retransmission request signal; a return channel transmitter transmitting the retransmission request signal; and a return channel receiver receiving data corresponding the portion with error.05-03-2012
20120110403Error Correction Scheme for Facsimile Over a Packet Switched Network - A method for correcting at least one error in a facsimile transmission over a packet switched communications network includes the steps of: detecting, by a first gateway coupled to the communications network, at least one missing data packet in a sequence of data packets transmitted from a second gateway coupled to the communications network during the facsimile transmission; transmitting, from the first gateway, a request for retransmission of the missing data packet to the second gateway; determining whether the missing data packet is available for retransmission; and, when the missing data packet is available, retransmitting the missing data packet to the first gateway.05-03-2012
20100122135HIGHLY UTILIZED COMMUNICATION CHANNEL WITH ORDER AND RETRANSMISSIONS - A communication link comprising: a first transceiver configured to transmit a first set of packets at a predetermined rate with a first error resistance level, store the transmitted data in a buffer, receive a retransmission request, and retransmit the relevant data using one or more packets encoded with a second error resistance level that is higher than the first error resistance level. And a second transceiver configured to receive the first set of packets, detect an erroneous packet, request retransmission of the erroneous packet, and forward the data received in the packets according to its original order approximately after a fixed delay.05-13-2010
20110016369METHOD AND SYSTEM TO IMPROVE LINK BUDGET OF A WIRELESS SYSTEM - A method and system to improve the link budget of a wireless system using fast Hybrid Automatic Repeat Request (HARQ) protocol. In one embodiment of the invention, the Medium Access Control (MAC) logic in a base station determines whether the quality of the communication link with a mobile station is bad. When the MAC logic in the base station determines that the quality is bad, the base station uses a fast Hybrid Automatic Repeat Request (HARQ) protocol to indicate to the mobile station to send identical information to the base station in each of a plurality of successive or consecutive communication intervals before processing any received identical information from the mobile station. The fast HARQ protocol reduces the latency of receiving the identical information correctly, as compared with the current HARQ protocol.01-20-2011
20120210185METHOD AND SYSTEM FOR DETECTING RETRANSMISSION THRESHOLD CONDITION IN SELECTIVE REPEAT ARQ COMMUNICATION SYSTEM - A method for determining a retransmission threshold condition in a selective repeat type, automatic repeat request (ARQ) wireless communication system. A set of negative acknowledgement (NACK) sequence numbers (SNs) corresponding to non-received data packets is received. First and second variables and an array representing a maximum number of retransmissions associated with each non-received data packet are determined. An index value is generated based on the array data and then compared with a threshold value to determine the retransmission threshold condition.08-16-2012
20100083066SYSTEM AND METHOD FOR AUTOMATIC COMMUNICATION LANE FAILOVER IN A SERIAL LINK - A system for automatic lane failover includes a first device coupled to a second device via a serial communication link having a plurality of a communication lanes. The devices may communicate by operating the link in a normal mode and a degraded mode. During normal mode operation, the devices may send frames of information to each other via the serial communication link. Each frame of information may include a number of data bits and a number of error protection bits. In response to either device detecting a failure of one or more of the communication lanes, the first device may cause the serial communication link to operate in a degraded mode by removing the one or more failed communication lanes. In addition, each device may reformat and send the frame of information on the remaining communication lanes with fewer data bits and the same number of error protection bits.04-01-2010
20100100787TRANSMISSION DATA GENERATING APPARATUS AND RECEIVER - This invention proposes a transmission data generating apparatus for use in a transmitter of a communication system, which transmission data generating apparatus comprises a redundancy data obtaining unit for obtaining redundancy data of information data which was transmitted to a receiver and was not received successfully by the receiver; a new data obtaining unit, for extracting new data, which has not been transmitted to the receiver; and a combination unit, for combining the redundancy data and the new data to form a transmission data to be subsequently transmitted to the receiver. This invention enhances the success rate of decoding the new data in primarily transmitted data and retransmitted data, and enhances system throughput.04-22-2010
20120239999VIDEO TRANSMITTING APPARATUS, VIDEO RECEIVING APPARATUS, AND VIDEO TRANSMISSION SYSTEM - A video transmitting apparatus includes a providing unit configured to provide retransmission request information including information for retransmitting video information to be transmitted to a video receiving apparatus, a control unit configured to perform connection control for communication with the video receiving apparatus, a transmitting unit configured to transmit the retransmission request information provided by the providing unit and the video information to the video receiving apparatus, through communication for which connection control is performed by the control unit, a receiving unit configured to receive a retransmission request based on the retransmission request information, the retransmission request being transmitted from the video receiving apparatus, and a retransmitting unit configured to retransmit a specific part of the video information in accordance with the retransmission request received by the receiving unit.09-20-2012
20090217119METHOD, SYSTEM AND RELAY STATION FOR REALIZING HYBRID AUTOMATIC RETRANSMISSION - A method for implementing hybrid automatic retransmission is provided in a communication system. In the method, a terminal transmits a data block to a receiving side through a relay station; the relay station returns a receiving status of the relay station to the receiving side; and the transmitting side determines whether retransmission of the data block is needed according to the receiving status. A system for implementing hybrid automatic retransmission and a relay station are described, also. Accordingly, the system performance is enhanced, the transmission quality is improved. In addition, the relay station is transparent to the terminal such that no modification is required to be made to the existing terminal in the system having a relay station.08-27-2009
20110173508RADIO RECEIVER AND METHOD FOR CHANNEL ESTIMATION - A radio receiver includes an input terminal to receive a first radio signal, an equalizer, coupled to the input terminal, to equalize the first radio signal and to output an equalized signal and a first channel estimator, coupled to the input terminal and the equalizer, to estimate first channel parameters by using the first radio signal and a signal derived from the equalized signal. The radio receiver may contain a controller implementing a HARQ protocol and a HARQ buffer to store likelihood information based on the equalized signal. The radio receiver may contain a reconstruction unit to provide the signal derived from the equalized signal based on a content of the HARQ buffer.07-14-2011
20090210765METHOD AND DEVICE FOR TRANSMITTING DATA, IN PARTICULAR VIDEO - The method of transmitting data packets from a server to at least one client comprises: 08-20-2009
20090276671METHODS AND APPARATUS FOR TRANSMITTING/RECEIVING DATA IN A COMMUNICATION SYSTEM - A method of error control, including forming a plurality of first data symbols from a plurality of data bits, transmitting a first signal including the plurality of first data symbols, receiving a request for retransmission, forming a plurality of second data symbols from the plurality of data bits, and transmitting a second signal including the plurality of second data symbols. At least one of the first data symbols is formed from several of the plurality of data bits such that none of the second data symbols is formed from the several of the plurality of data bits.11-05-2009
20100011270COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND COMMUNICATION METHOD - A first loss determination section 01-14-2010
20080209297METHOD AND APPARATUS FOR RETRANSMISSION MANAGEMENT FOR RELIABLE HYBRID ARQ PROCESS - A method for transmitting a packet from a transmitter to a receiver in a wireless communication system begins by building a packet by a transport format combination (TFC) selection process, and the packet is transmitted from the transmitter to the receiver. If the transmitter receives an indication that the packet was not successfully received at the receiver, the packet is retransmitted via a hybrid automatic repeat request (HARQ) procedure. If the HARQ procedure did not successfully transmit the packet, then the packet is retransmitted via a retransmission management (RM) procedure. If the RM procedure did not successfully transmit the packet, then the packet is discarded by the transmitter.08-28-2008
20080209300Data transmission method and data transmission apparatus - A data transmission apparatus including a receiving unit for receiving transmitted packets; a priority decision unit; a retransmission packet storage unit; a retransmission instruction receiving unit for receiving a retransmission request from a terminal at the receiving end; a retransmission decision unit; a transmission queue management unit; and a transmission unit.08-28-2008
20090282309COGNITIVE RADIO, ANTI-JAMMING CODING RETRANSMISSION METHODS AND SYSTEMS - Implementations of the present principles include methods and systems for retransmitting un-recovered information within a cognitive radio, anti-jamming system. In accordance with aspects of the present principles, encoding schemes may be optimized for retransmission by utilizing a jamming rate and a number of un-recovered packets to minimize packet loss and thereby enhance throughput. In addition, rateless encoding features may be employed to re-encode un-recovered portions of an information sequence for efficient retransmission.11-12-2009
20090287977EDGE incremental redundancy memory structure and memory management - A wireless device for implementing Incremental Redundancy (IR) operations includes an IR memory dedicated to storing data related to the IR operations. The IR memory includes a Type I IR memory adapted to store IR status information of a Radio Link Control (RLC) data block and a Type II IR memory adapted to store the RLC data block.11-19-2009
20100138714Retransmission Above the Gamma Interface - Embodiments disclosed herein are configured for retransmission above the gamma (γ) interface. At least one embodiment of a method includes receiving data from an Ethernet layer, the data being identified as eligible for retransmission or not eligible for retransmission; in response to a determination that the data is eligible for retransmission, storing a copy of at least a portion of the data in a retransmission queue; and transmitting the data across a gamma (γ) interface to a packet transfer mode transmission convergence layer.06-03-2010
20080215948METHOD AND APPARATUS FOR HYBRID AUTOMATIC REPEAT REQUEST TRANSMISSION - A method and apparatus for hybrid automatic repeat request (HARQ) transmission are disclosed. If a packet has not been successfully transmitted, it is determined whether an HARQ early termination condition is met. If the HARQ early termination condition is met, the HARQ process is terminated and the packet is discarded at the HARQ level. The HARQ early termination condition is met if a positive acknowledgement (ACK) has not been received until the number of retransmissions reaches a predetermined limit that is dynamically configured based on channel condition, measurement, etc. Alternatively, the HARQ early termination condition is met if a transmit power required for successful transmission of the packet is much higher than an actual transmit power. Alternatively, the HARQ early termination condition is met if a transport format combination (TFC) selected for retransmission is different from an optimal TFC. A higher layer may be notified of the early HARQ termination.09-04-2008
20090119564Methods and Apparatus for Processing Error Control Messages in a Wireless Communication System - Methods and apparatus for processing error control messages, such as RLC ARQ control messages, are disclosed. An exemplary method comprises signaling a medium access controller (MAC) that link resources are needed for transmitting data, receiving an indication from the MAC that link resources for transmitting the data are scheduled, and generating an error control message after receiving said indication, based on a current error control status. The error control message is then forwarded to the MAC for transmission. Because the generation of an error control message is delayed until resources for its transmission are scheduled, the queuing of stale control messages is avoided.05-07-2009
20100005352PROGRAM TRANSMISSION SYSTEM, PROGRAM TRANSMISSION METHOD, AND STORAGE MEDIUM STORING CONTROL PROGRAM - A program transmission system in which a program is transmitted from a transmission apparatus to an image forming apparatus is provided. The program transmission system includes an acquisition unit configured to acquire operational state information about an operational state in the image forming apparatus, a determination unit configured to determine timing to transmit the program to the image forming apparatus according to the operational state based on the operational state information acquired by the acquisition unit, and a transmission unit configured to transmit the program from the transmission apparatus to the image forming apparatus according to the timing determined by the determination unit.01-07-2010
20100146353METHOD AND SYSTEM FOR INDICATING DATA BURST ALLOCATION IN A WIRELESS COMMUNICATION SYSTEM - A method is provided for transmitting a Media Access Protocol (MAP) message in a wireless communication system. A base station transmits the MAP message including operation mode information indicating a data burst allocation scheme, to a mobile station. The mobile station identifies a data burst according to the operation mode information included in the MAP message received from the base station.06-10-2010
20080244350APPARATUS AND METHOD FOR AUTOMATIC REPEAT REQUEST IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method for an Automatic Repeat reQuest (ARQ) at a receiver in a Multiple Input Multiple Output (MIMO) system wherein when a received packet is erroneous and the erroneous packet is received from the weakest antenna in a Space Multiplexing (SM) mode, a first smallest number of retransmissions is computed to acquire a Signal to Noise Ratio (SNR) within or above an Adaptive Modulation and Coding (AMC) level. When the first number of the retransmissions is greater than a threshold, the sender is requested to retransmit the packets from the strongest antenna in the SM mode and when the first number of the retransmissions is smaller than the threshold, the sender is requested to retransmit the packets from the weakest antenna in the SM mode.10-02-2008
20080250293APPARATUS AND METHOD FOR HANDLING DATA ERROR IN DATA TRANSMISSION SYSTEM INCLUDING RELAY STATION - A method and apparatus for handling data error in a data transmission system including a relay station which receives a data from a transmission apparatus and transmits the data to a receiving apparatus is provided.10-09-2008
20090119565Data transmitting/receiving system and method thereof - A data transmitter transmitting a data packet containing identifier information including a kind of data, a sequence of data, and/or a packet generating sequence. A receiver extracting a packet number and the identifier information for an error-receipt occurring data packet based upon the identifier information recorded in a header of the packet, generating retransmission control information, such as retransmission times and priority, based on the extracted packet number and the identifier information and transmitting the retransmission control information to the transmitter of the packet. The retransmitting the error-occurring data packet according to the received retransmission control information. The number of retransmissions and the retransmission priority can be varied according to characteristics of the transmitted data, so that retransmissions is suitable for the characteristics of the data and to more stably receive the data that is more influential to the restoration of the data.05-07-2009
20080209298Decoding Apparatus and Method Thereof - In a decoding apparatus in a portable Internet terminal, a channel encoded symbol received from a transmitter is decoded by one of a chase-combining scheme and a code-combining scheme selected based on an ID value of the subpacket indicating a start position of the symbol. In this case, the chase-combining scheme is partly used for the encoded symbol of the information bit. With such a mode, decoding can be performed at a low code rate.08-28-2008
20100005353CORRECTION CIRCUIT FOR IMPROVING PERFORMANCE IN A CHANNEL DECODER - A receiver for a mobile communication system includes a channel equalizer for receiving a burst and generating a soft decision output associated with the burst, a soft decision correction circuit follows the channel equalizer and a decoder receives and decodes a block of bursts. The soft decision correction circuit calculates a correction factor based on the soft decision output for the burst and applies the correction factor to the burst prior to the burst entering the decoder.01-07-2010
20100005351METHOD OF RETRANSMITTING DATA IN A MOBILE COMMUNICATION SYSTEM - A communication method according to an automatic repeat request scheme in a mobile communication system includes transmitting a retransmission packet per certain time period (periodically) in response to NACK of a first user equipment related to a first packet transmitted within a frame group consisting of a plurality of successive frames, and transmitting a retransmission packet non-periodically in response to NACK of a second user equipment related to a second packet transmitted within the frame group.01-07-2010
20080270866TRANSMISSION WITH AUTOMATIC REPEAT REQUEST PROCESS - Method for transmitting data includes selecting an automatic repeat request process from a plurality of automatic repeat request processes, the selection being based at least on a first parameter specifying a predetermined number of automatic repeat request data re-transmissions and on a second parameter specifying a predetermined duration of an automatic repeat request transmission period, during which the predetermined number of automatic repeat request data re-transmissions may be performed. The data are transmitted using the selected automatic repeat request process.10-30-2008
20090031184MIMO Hybrid-ARQ Using Basis Hopping - A Hybrid Automatic Retransmission Request (H-ARQ) technique is provided for Multi-Input Multi-Output (MIMO) systems. The technique changes the basis (V) upon retransmission, which helps reduce the error probability upon retransmission. This basis hopping technique provides for improved performance gain without significant increase in design complexity. In one embodiment, communication device (01-29-2009
20090164862Method, Receiver And Transmitter For Improved Hybrid Automatic Repeat Request - The present invention relates to methods and a transmitter and a receiver for a mobile communication system. The basic idea of the present invention is to recursively derive from previous HARQ feedback the number of HARQ transmissions that is required to be able to decode the transmitted data successfully and to only transmit explicit HARQ feedback information if the decoding result differs from the derived result.06-25-2009
20090138774SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO USING SELECTIVE RETRANSMISSION - A system and method for wireless communication of data are disclosed. One embodiment of the system includes a transmitter configured to transmit a data packet including a plurality of displayable elements over a wireless channel. Each displayable element includes a plurality of portions including a most significant portion and a least significant portion. The data packet is divided into a plurality of data groups including a first data group and a second data group. The first data group includes the most significant portions of the displayable elements while the second data group includes the least significant portions of the displayable elements. The system also includes a receiver configured to receive the data packet over the wireless channel and to determine whether any of the data groups is in error. The transmitter is further configured to transmit to the receiver: a retransmission packet including a selected data group in error according to a quality of service associated with the displayable elements. One or more of the data groups can be included in the retransmission packet.05-28-2009
20100031109RECEIVING TERMINAL AND RECEIVING METHOD - A receiving terminal is provided that prevents a load on a network near a receiving terminal from increasing when a retransmission request is made to a plurality of other terminals, and enables the probability of being able to compensate for a lost packet by means of a retransmission packet to be increased. In a receiving terminal that transmits a retransmission request for compensating for a lost packet lost in a network, a measurement section measures a time period corresponding to a distance in the network between the receiving terminal and a plurality of receiving terminals, a calculation section calculates for each of the receiving terminals a float (spare time period) found by subtracting the current time and a time period measured by the measurement section from a playback time at which a retransmitted packet is played back, and a decision section decides retransmission request transmission timing and a retransmission request transmission destination for each of the receiving terminals based on the calculated floats.02-04-2010
20090138776RETRANSMISSION MANAGER AND METHOD OF MANAGING RETRANSMISSION - The invention provides a retransmission manager for use in a digital content delivery system, wherein the delivery system comprises a plurality of user devices, a set of content providers for delivering digital content to the user devices in the form of bursts of content through a source unit. The retransmission manager is connected to the user devices to receive notifications therefrom, each notification received from a given user device identifying a burst received by the given user device which is candidate for retransmission. The retransmission manager selects a set of bursts among the bursts identified by the notifications based on the amount of available bandwidth at the source unit and on negotiation messages received from at least one of the plurality of content providers, the negotiation message being related to at least one burst identified in the notifications and including, for each burst, a negotiation parameter. The retransmission manager then sends a request for retransmission of the selected bursts to the source unit.05-28-2009
20090049355System and Method Employing Frequency Band Flipping for the Retransmission of Data - For use in a communication system, an apparatus that, in one embodiment, includes a band flipping module configured to renumber physical resource blocks for a retransmission of data from physical resource blocks associated with a previous transmission of the data. The apparatus also includes a transceiver configured to retransmit the data in accordance with the renumbered physical resource blocks.02-19-2009
20090055702APPARATUS AND METHOD FOR ALLOCATING MEMORY SPACE IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for receiving data when an HS-SCCH is not used in a mobile communication system are provided. In the apparatus and method, retransmission data is received, parameters including information about initial transmission data are acquired from the retransmission data, the initial transmission data is retrieved from a second-rate dematching input buffer based on the information about the initial transmission data, second-rate dematching is performed on the initial transmission data and the retransmission data, and first output data is generated by soft-combining the second rate-dematched initial transmission data with the second rate-dematched retransmission data. Accordingly, memory usage can be reduced.02-26-2009
20090055703APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING THE HYBRID-ARQ ACK/NACK SIGNAL IN MOBILE COMMUNICATION SYSTEM - An apparatus and method for transmitting/receiving a Hybrid Automatic Repeat reQuest (HARQ) Acknowledge/Negative acknowledge (ACK/NACK) signal in a mobile communication system. The present invention distributes a CDM segment, to which an ACK/NACK signal is mapped, in the frequency domain of an OFDM symbol, and repeatedly transmits the CDM segment, thereby providing diversity gain in the time-frequency domain. Further, the present invention provides a mapping rule for distributing transmit power between OFDM symbols to which the ACK/NACK signal is mapped and transmitted, thereby preventing the case where a particular OFDM symbol is power-overloaded, and thus contributing to improvement of the entire system performance.02-26-2009
20090055701MIMO TRANSMITTING APPARATUS, MIMO RECEIVING APPARATUS, AND RETRANSMITTING METHOD - A MIMO transmitting apparatus that achieves a flexible control in accordance with variation of a propagation environment to reduce the number of retransmissions. A buffer (02-26-2009
20090144597ENCODING/DECODING TECHNIQUE FOR REBROADCASTING LOST PACKETS - When retransmitting lost packets of data to multiple devices in a wireless network, the original sequence of packets containing all the lost packets may be encoded into a smaller number of packets for the retransmission. These encoded packets may be collectively addressed to all the intended receiving devices through broadcast or multicast addressing. These encoded packets may then be selectively decoded by the receiving devices, using the successfully received previous packets as part of the decoding process. Repetitive exclusive OR algorithms may be used for encoding and decoding.06-04-2009
20090249151MIMO-HARQ Communication System and Communication Method - The invention relates to a MIMO-HARQ communication system and communication method. When a receiver carries out a CRC for received data streams and detects an error in a data stream, it feeds back to a transmitter and requests a retransmission of the data stream. The transmitter determines the correspondence between the data streams to be transmitted and a plurality of transmitting antennas in a method for retransmitting the error data stream with a transmitting antenna other than the one having transmitted the error data stream. Transmission and retransmission of a same data stream experience different spatial fading channels, so that an additional spatial diversity gain is obtained by exchanging the transmission sequences, in addition to a time diversity gain obtained by retransmission, and hence the probability of successful transmission is improved.10-01-2009
20090249154DATA TRANSFER APPARTUS AND DATA TRANSFER CONTROL METHOD - A data transfer apparatus in which, in a failure state such that an error packet is received at a reception end, the error packet is returned and is recorded in the transmission end, the error packet is analyzed and an error bit is identified at the transmission end, and data transmission/reception units are initialized and restarted in order to recover from the failure state.10-01-2009
20090249152TRANSMISSION SYSTEM, TRANSMISSION METHOD AND COMMUNICATION DEVICE - A transmission method for transmitting information between a transmission device and a reception device, the method includes determining whether or not an error is detected in information from the transmission device, requesting the transmission device to re-transmit the error-detected information when an error is detected, re-transmitting information corresponding to a re-transmission request as re-transmission information from the transmission device when the re-transmission request is detected, registering the re-transmission information as a test pattern, transmitting the registered test pattern to the reception device, registering the re-transmission data received from the transmission device as a collation pattern, reading out the collation pattern corresponding to the received test pattern, and collating the test pattern and the collation pattern when a test pattern is received from the transmission device, and adjusting and setting a parameter of the reception device on the basis of a pattern collation result.10-01-2009
20090210766WIRELESS COMMUNICATION SYSTEM, TERMINAL AND BASE STATION - A non-terminated packet is transmitted, by utilizing a spatial layer responded with an ACK, which is assumed as a released layer. Alternatively, a non-terminated packet is transmitted by using a released layer and an original spatial layer in combination. Alternatively, a new packet is transmitted in a released layer by utilizating time till termination of transmission of a non-terminated packet. A wireless communication system effectively utilizing a released layer, a terminal and a base station.08-20-2009
20110145669DATA DERATE MATCHER FOR SUPPORTING HARQ AND METHOD THEREOF - A data derate matcher for supporting hybrid automatic repeat request (HARQ), includes a control parameter generation unit for generating control parameters to separate bits of an input bit stream e06-16-2011
20090199060Information processing apparatus, information processing method, and computer program product - A receiving unit wirelessly receives a packet communication signal. When receiving a packet included in the packet communication signal is failed, a requesting unit issues a retransmission request for retransmitting the packet. A storing unit stores therein packets included in packet communication signals received before and after issuing the retransmission request. A setting unit sets an order of transferring the packets stored in the storing unit to a control unit in an order of receiving the packets without a fail. A transferring unit transfers the packets stored in the storing unit to the control unit in the order set by the setting unit.08-06-2009
20090199062Virtual limited buffer modification for rate matching - Virtual limited buffer modification for rate matching. A reduced-size memory module is employed within a communication device to assist in storage of log-likelihood ratios (LLRs) employed in accordance with turbo decoding. This architecture is also applicable to other types of error correction code (ECC) besides turbo code as well. The memory size is selected to match the number of coded bits (e.g., including information bits and redundancy/parity bits) that is included within a transmission. The received signals may be various transmissions made in accordance with hybrid automatic repeat request (HARQ) transmissions. When the LLRs calculated from a first HARQ transmission is insufficient to decode, those LLRs are selectively stored in the memory module. When LLRs corresponding to a second HARQ transmission is received, LLRs corresponding to both the first HARQ transmission and the second HARQ transmission are passed from the memory module for joint use in decoding.08-06-2009
20090199061METHOD AND DEVICE FOR PROCESSING DATA IN RETRANSMISSION PROCESSES - A retransmission process control method is provided that increases the efficiency of memory usage in retransmission processes. A method for processing data in multiple retransmission processes, used in a receiving-side communication device, includes; determining whether or not a received signal can be stored in a reception buffer for retransmission processes; when the received signal cannot be stored in the reception buffer, discarding from the reception buffer at least part of existing received signals corresponding to retransmission processes in progress; and storing the received signal into the reception buffer.08-06-2009
20090083602OPERATION OF A FORWARD LINK ACKNOWLEDGEMENT CHANNEL FOR THE REVERSE LINK DATA - An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.03-26-2009
20110145672HARQ Process Continuation after CQI-Only Report - Techniques for controlling synchronous HARQ retransmissions are disclosed, in which non-adaptive retransmissions scheduled for a first transmission time interval are automatically deferred to a later transmission time interval in the event that a control message prohibiting the retransmission during the first transmission interval is received. In an exemplary method, a NACK message is received (06-16-2011
20120079337USER EQUIPMENT USING HYBRID AUTOMATIC REPEAT REQUEST - A user equipment comprises a transmitter and an adaptive modulation and coding controller. The transmitter is configured to transmit data over an air interface in a single transmission time interval with a first specified modulation and coding scheme, where the single transmission time interval has a plurality of transport block sets. In response to receiving a repeat request for retransmission of at least one particular transport block set, the transmitter retransmits the at least one of the particular transport block sets. The adaptive modulation and coding controller is configured to change the specified modulation and coding scheme to a second specified modulation and coding scheme, enabling a combining of a particular transport block set transmitted at the first specified modulation and coding scheme with a retransmitted version of the particular transport block set transmitted at the second specified modulation and coding scheme.03-29-2012
20120079336TECHNIQUES UTILIZING ARQ FEEDBACK FOR EFFICIENT TRANSMITTER BUFFER USAGE - An embodiment of the present invention provides an apparatus, comprising a base station with a transceiver operable to communicate with a mobile station (MS) in a wireless network and further adapted to provide ARQ Feedback to said MS enabling an efficient transmitter buffer usage by said transceiver sending its updated feedback any time and using a currently defined feedback IE to indicate which blocks arrived at said transceiver and which did not arrive yet or using a modified feedback IE.03-29-2012
20090100310Apparatus and method for hybrid automatic repeat request (HARQ) in wireless communication system - An apparatus and a method for Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system are provided. A receiver includes a Media Access Control (MAC) layer part for error-checking each MAC Packet Data Units (PDUs) extracted from a physical layer burst, and generating HARQ combination control information according to a result of the error check; a receiving part for receiving a retransmit burst; and a combiner for selecting one or more Forward Error Correction (FEC) blocks from the retransmit burst according to the HARQ combination control information, and HARQ-combining the selected one or more FEC blocks.04-16-2009
20080263424CONTROLLED DATA NETWORK ERROR RECOVERY - A method, a system and network nodes use an indication of possible duplicates of units, so that these units can be handled differently than other units. The unit is indicated to be a possible duplicate to the entity to which it is resent because no response was received from the entity it was sent to.10-23-2008
20090100309METHODS AND DEVICES FOR ENCODING DATA IN COMMUNICATION SYSTEMS - Methods and apparatuses for encoding data in a wireless communication system including receiving an information sequence, and encoding the received information sequence to generate three subblocks of sequences. A first subblock of the three subblocks is the information sequence, a second subblock of the three subblocks is an encoded sequence, and a third subblock of the three subblocks is an interleaved and encoded sequence. The method further includes permuting the three subblocks of encoded sequences separately by subblock permutation, and continuously mapping the three subblocks into a circular buffer, the circular buffer including a first part, a second part, and a third part. Further, the method includes bit-selecting bits from the circular buffer, in a circular order corresponding to the first part, the second part, and the third part, to generate a first redundancy version and a second redundancy version, wherein bit-selection for a first redundancy version of the plurality of redundancy versions begins at a first position in the circular buffer, bit-selection for each successive redundancy version of the plurality of redundancy versions begins after a last position in the circular buffer corresponding to a previous redundancy version, and wherein, when a complete codeword is selected, bit-selection is offset from the first position by a fixed number of bits X. Finally, the method includes transmitting at least one redundancy version of the plurality of redundancy versions to at least one receiving device.04-16-2009
20090204864TRANSMISSION CONTROLLING METHOD, SENDER APPARATUS AND RECEIVER APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, a sender apparatus sends a data block, for each of a plurality of stream data, with data block identification information, which does not conflict between stream data, annexed, and a reception apparatus performs a re-sending synthesis process for a data block received already and a re-sending data block to which the same data block identification information is individually annexed based on the data block identification information annexed to the received data block. Consequently, also in a case wherein the number of transmission streams between the sender apparatus and the reception apparatus is varied (reduced), the matching property of the data block which is a re-sending synthesis target can be maintained and communication can be continued normally.08-13-2009
20110145670Method for High-Efficient Implementation of De-Rate Matching Including HARQ Combining for LTE - Embodiments of the invention provide a method of de-rate matching without NULL bits skipping. Date is received without NULLs and inputted into a LLR combining block. The history data without NULLs is buffered. Log-likelihood ratio (LLR) combining is called before de-rate matching. The output of LLR combining is de-interleaved. The reading pointer is offset to forge NULLs. Finally, de-interleaving output without NULLs is sent to a turbo decoder.06-16-2011
20090138777SYSTEM AND METHOD FOR POWER OUTAGE AND RESTORATION NOTIFICATION IN AN ADVANCED METERING INFRASTRUCTURE NETWORK - A method and system are provided to transmit a meter power status. The method includes recognizing a power status change at a meter. The method includes, if the meter is scheduled to transmit first, transmitting a notification message to at least one neighboring meter towards a mesh gate, wherein the notification message includes a power status indicator and a meter identifier. The method includes, if the meter is not scheduled to transmit first, waiting a predetermined time period to receive a notification message from at least one neighboring meter. The method includes, responsive to receiving a notification message, adding a meter identifier to the received notification message before retransmitting the modified notification message to at least one neighboring meter. The method includes retransmitting the notification message.05-28-2009
20080282125Method and Apparatus for Combined Packet Retransmission and Soft Decoding of Combined Packets in a Wireless Communication Network - In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.11-13-2008
20090204865DATA REPAIR ENHANCEMENTS FOR MULTICAST/BROADCAST DATA DISTRIBUTION - A method, system, device, and computer code product is disclosed in which a sender transmits data to a plurality of receivers via a point-to-multipoint session. The receiver sends data repair requests to the sender requesting data expected but not received and the sender retransmits the expected but not received data via the point-to-multipoint session. The sender can also schedule point-to-point data repair sessions with individual receivers if the retransmission via the point-to-multipoint session does not correct all errors. The sender can be configured to delay point-to-point repair sessions using a randomization mechanism based on the number of receivers using the point-to-multipoint session.08-13-2009
20090204863METHOD AND APPARATUS FOR SUPPORTING HARQ - A method of supporting Hybrid Automatic Repeat Request (HARQ) includes receiving an initial uplink grant on a downlink channel, transmitting uplink data on an uplink channel using the initial uplink grant, receiving a request for retransmission of the uplink data, determining at least one transmission parameter of a channel quality indicator (CQI) from the initial uplink grant, multiplexing retransmission data of the uplink data with the CQI, and transmitting the multiplexed data on the uplink channel. Amount of resources for transmission of the CQI is determined based on the at least one transmission parameter.08-13-2009
20120198299OPTIMAL ERROR PROTECTION CODING FOR MIMO ACK/NACK/PRE/POST INFORMATION - Error protection based on a nonlinear code set may be used in a multiple input multiple output (MIMO) radio communications system. A decoder decodes received MIMO data streams and generates an automatic repeat request (ARQ) message for data units received for the MIMO data streams for each transmission time interval. An encoder codes the ARQ message using a code word from a nonlinear code set. At the data transmitter, which transmits one or more data units in transmission time intervals from two or more MIMO data streams, the ARQ message associated with the transmitted data units is decoded using a code word from the nonlinear code set.08-02-2012
20090222705DATA PROCESSOR SYSTEM AND A METHOD FOR COMMUNICATION DATA - A data processor system is described comprising a first and a second data processor unit (PU09-03-2009
20090249150Apparatus, method and computer program product for HARQ buffer size reduction - Apparatus, methods and computer program products implement HARQ buffer size reduction by storing successfully received blocks of a multi-block signal in a code block buffer and only storing unsuccessfully received blocks of the multi-block signal in the HARQ buffer. As HARQ retransmissions of the signal occur, previous successfully received blocks are discarded. Blocks that were not successfully received in one or more previous signals but are successfully received in a HARQ retransmission are saved in the code block buffer. The process may continue until all blocks of the multi-block signal have been successfully decoded received and stored in the code block buffer. The successfully received blocks of the multi-block signal are then passed to higher layers.10-01-2009
20090259909PHYSICAL HARQ INDICATOR CHANNEL (PHICH) RESOURCE ASSIGNMENT SIGNALING IN A WIRELESS COMMUNICATION ENVIRONMENT - Systems and methodologies are described that facilitate signaling Physical Hybrid Automatic Repeat Request (HARQ) Indicator Channel (PHICH) resource assignments in a wireless communication environment. At least a portion of a current PHICH resource assignment for a current Transmission Time Interval (TTI) and at least a portion of a subsequent PHICH resource assignment for a subsequent TTI can be encoded within a common encoded signal. Further, the common encoded signal can be sent to an access terminal during the current TTI. For instance, the common encoded signal can be transmitted via a Physical Broadcast Channel (PBCH). Alternatively, the common encoded signal can be sent through dedicated Radio Resource Control (RRC) signaling during handover. The access terminal can decode the common encoded signal received from the base station to identify the current PHICH resource assignment (or portion thereof) and the subsequent PHICH resource assignment (or portion thereof).10-15-2009
20090259907Inter-packet selective symbol mapping in a joint incremental redundancy and symbol mapping diversity system - An integrated incremental redundancy symbol mapping diversity system for a communication device. The integrated incremental redundancy symbol mapping diversity system includes a transmitter. The transmitter packetizes a retransmission packet according to a modulation scheme in response to a retransmission request from the receiver. The transmitter includes an output packet processor and an inter-packet selective symbol mapper. The output packet processor determines a transmission iteration of a bit segment of the retransmission packet. The inter-packet selective symbol mapper applies a first symbol map pattern to the bit segment based on the transmission iteration of the bit segment and applies a second symbol map pattern to another bit segment of the retransmission packet based on the transmission iteration of the other bit segment. The first symbol map pattern is different from the second symbol map pattern.10-15-2009
20090249156Unidirectional Error Code Transfer Method for a Bidirectional Data Link - A controller includes a link interface that is to couple to a first link to communicate bi-directional data and a second link to transmit unidirectional error-detection information. An encoder is to dynamically add first error-detection information to at least a portion of write data. A transmitter, coupled to the link interface, is to transmit the write data. A delay element is coupled to an output from the encoder. A receiver, coupled to the link interface, is to receive second error-detection information corresponding to at least the portion of the write data. Error-detection logic is coupled to an output from the delay element and an output from the receiver. The error-detection logic is to determine errors in at least the portion of the write data by comparing the first error-detection information and the second error-detection information, and, if an error is detected, is to assert an error condition.10-01-2009
20090249153DYNAMIC ADJUSTMENT AND SIGNALING OF DOWNLINK/UPLINK ALLOCATION RATIO IN LTE/TDD SYSTEMS - A method for dynamic adjustment of downlink/uplink resource allocation ratio in a long-term evolution (LTE) time division duplex (TDD) system is disclosed. The method includes replacing at least one of an uplink subframe and a downlink subframe with a mute subframe in a subframe pattern, indicating a first downlink/uplink resource allocation ratio. Thereafter, the mute subframe is replaced with either the uplink subframe or the downlink subframe to form another subframe pattern. The subframe pattern including the mute subframe is obtained from a lookup table, such that the replacing the mute subframe results in the other pattern. A data transmission in accordance with the other subframe pattern, indicating a second downlink/uplink resource allocation ratio, may be scheduled. Hybrid Automatic Repeat-request (HARQ) processing may be implemented after the at least one of the uplink subframe and the downlink subframe is replaced with the mute subframe in the first subframe pattern.10-01-2009
20080313521METHOD FOR DYNAMIC INTERPRETATION OF TRANSPORT BLOCK SIZE - A system and method is provided which allows for the dynamic interpretation of a transport block size field in a Layer 1/Layer 2 (L1/L2) control channel, such that for any first H-ARQ transmission, the transport block size indication field will indicate the size of the transport block. For any retransmission, the transport block size indication bits can be transformed into dedicated bits for indicating the RV used as it relates to circular buffering. A robust bit field for indicating new data transmission (e,g, new data indication (NDI)) is therefore introduced, and from a UE perspective it is possible to determine how to interpret the transport block size field.12-18-2008
20080313520DATA-TRANSMISSION DEVICE DATA-RECEPTION DEVICE AND DATA-TRANSMISSION-AND-RECEPTION SYSTEM - A data-transmission device dividing video data into packets and transmitting the packet to a data-reception device requesting the video data includes a unit generating transmission packets based on the video data, a unit setting importance for each of the generated packets, a unit storing information about the set importance in a first storage unit, a communication unit transmitting the generated packet to the data-reception device and receiving a packet-retransmission request from the data-reception device, a unit saving the transmitted packet in a second storage unit, a unit calculating the packet-loss rate based on the received packet-retransmission request, a unit determining a packet retransmitted to the data-reception device based on the calculated packet-loss rate and the packet importance, and a retransmission unit reading the determined retransmission packet from the second storage unit and transmitting the retransmission packet to the data-reception device.12-18-2008
20080313518Communication Device, Communication System, Communication Method, Communication Program, and Communication Circuit - In a transmitter (12-18-2008
20080313519Method and Apparatus for Improving Hybrid Automatic Repeat Request Operation in a Wireless Communications System - In order to avoid unknown behavior of a user equipment, the present invention provides a method of improving Hybrid Automatic Repeat Request, known as HARQ, operation for a network in a wireless communications system. The method includes adding a HARQ information information element, abbreviated to IE, and a Multi-Input Multi-Output, known as MIMO, parameters IE into a radio resource control message, wherein the radio resource control message is used by the network to assign, replace or release a physical channel used by the user equipment, and transmitting the radio resource control message to the user equipment.12-18-2008
20090259910METHOD AND APPARATUS FOR PERFORMING RANDOM ACCESS PROCEDURES - A mobile terminal and a method of performing a random access procedure by the terminal is achieved by transmitting a random access preamble to a base station, receiving a random access response from the base station, and performing an uplink transmission using an uplink grant from the base station. The uplink transmission is performed by using a maximum number of HARQ (Hybrid Automatic Repeat reQuest) transmissions parameter, which is included in a System Information Block (SIB) received from the base station.10-15-2009
20090259908ARQ AND HARQ PROTOCOL DATA UNITS AND METHOD OF FORMATION - The present invention provides for a method of forming at least one ARQ PDU from an ARQ service data unit (SDU), the ARQ PDU comprising a header portion and a data portion, and the method including selective addition of a Length Indicator field to the said header portion responsive to the determination of the presence in the PDU of the last bit of an ARQ SDU and if a HARQ PDU is formed of a plurality of ARQ PDUs wherein the last of the ARQ PDUs is arranged not to include an LI within its header if it is found not to be carrying the last bit of the ARQ SDU and LI will be added to all other ARQ PDUs though they are not carrying last bit of ARQ SDU.10-15-2009
20100153802System and Method for Anycast Transport Optimization - A system includes first, second, and third content servers, and an edge server. The first, second, and third content servers each are configured to cache content. The edge server is in communication with the first, second, and third content servers. The edge server is configured to receive a content request, and to request different portions of the content from each of the first, second, and third content servers based on a network cost of each of the first, second, and third content servers.06-17-2010
20100185910METHODS AND SYSTEMS FOR SETTING CID MASK LENGTH OF A HARQ-MAP/SUB-MAP POINTER IE IN WIMAX SYSTEMS - Methods and apparatus for setting the connection identifier (CID) mask length of a Hybrid Automatic Repeat-Request (HARQ)-MAP or a SUB-MAP pointer information element (IE) in a compressed downlink map (DL-MAP) of an orthogonal frequency-division multiple access (OFDMA) frame are provided in an effort to reduce the number of false indications in the CID mask, while also striving, as a secondary concern, to reduce the CID mask length. In this manner, an individual mobile station (MS) may not waste processing, battery power, or time interpreting a HARQ-MAP message or a sub downlink/uplink map (SUB-DL-UL-MAP) message that was not intended for this particular MS. For some embodiments where the CID mask length is set to be small, the control overhead (i.e., the size of the HARQ-MAP or the SUB-MAP pointer IE) may be decreased, and more of the OFDMA frame may be available for data traffic.07-22-2010
20100162069Dynamic interference avoidance with asynchronous HARQ - In a wireless communications network, a wireless device may examine the received signal to determine the strength of the received signal, and also determine the level of interference and noise. If a retransmission is needed due to a message being incorrectly received, these factors may then be processed to estimate whether the probable cause of poor reception is interference from a neighboring network. If such interference is the likely cause, the retransmission may be changed to a different time and/or to different frequencies in a subsequent frame, so that the interference from the neighboring network is less likely to reoccur.06-24-2010
20100262883Dynamic Monitoring of Ability to Reassemble Streaming Data Across Multiple Channels Based on History - Mechanisms are provided for processing streaming data at high sustained data rates. These mechanisms receive a plurality of data elements over a plurality of non-sequential communication channels and write the plurality of data elements directly to the file system of the data processing system in an unassembled manner. The mechanisms determining whether to perform a data scrubbing operation or not based on history information indicative of whether data elements in the plurality of data elements are being received in a substantially sequential manner. The mechanisms perform a data scrubbing operation, in response to a determination to perform data scrubbing, to identify any missing data elements in the plurality of data elements written to the file system and assemble the plurality of data elements into a plurality of data streams in response to results of the data scrubbing indicating that there are no missing data elements.10-14-2010
20100262882PROTOCOLS FOR HIGH PERFORMANCE COMPUTING VISUALIZATION, COMPUTATIONAL STEERING AND FORWARD PROGRESS - Methods, systems and computer program product for reducing latency and increasing throughput of data transmissions along a switch network path. Exemplary embodiments include a method in a network accelerator device having a memory buffer, a method including identifying a data transmission, copying data packets from the data transmission into the memory buffer, and in response to at least one of a missing data packet and a corrupt data packet identified during the data transmission, sending a copied data packet corresponding to the at least one of the missing data packet and the corrupt data packet.10-14-2010
20100192033VOICE ACTIVITY DETECTION (VAD) DEPENDENT RETRANSMISSION SCHEME FOR WIRELESS COMMUNICATION SYSTEMS - A voice activity detection (VAD) dependent retransmission scheme is described that mitigates the effect of packet loss on an audio signal transmitted between terminals in a wireless communication system in a manner that is generally more robust than conventional state-of-the art packet loss concealment algorithms but that consumes less terminal power as compared to conventional retransmission schemes. In one implementation, this is achieved by allowing retransmissions to be requested by a terminal only when a packet received by the terminal is deemed bad and when a portion of an audio signal currently being received by the terminal is deemed to comprise active speech. In other implementations, the processing of retransmission requests received by a terminal is inhibited or turned off entirely during periods when a portion of an audio signal currently being transmitted by the terminal is deemed not to comprise active speech.07-29-2010
20100262884DIAGNOSTIC SERVER FOR A HOME APPLIANCE AND CONTROLLING METHOD - A diagnostic server and a controlling method are provided. In the method, the diagnostic server receives a packet including at least one frame and performs error checking on each frame included in the packet. The diagnostic server receives a retransmitted packet upon determining from the result of error checking that a frame in the packet has an error. The diagnostic server performs error checking on each frame included in the retransmitted packet and restores the frame included in the packet based on the retransmitted packet when a frame, which is located in a location corresponding to the error frame, included in the retransmitted packet has no error. In the case where a packet including product information is transmitted, this method can reduce the number of retransmissions of the same packet required to acquire an error-free packet.10-14-2010
20100262881APPARATUS AND METHOD FOR REVERSE LINK TRANSMISSION IN AN ACCESS TERMINAL - A method for providing improved reverse link transmission timing in an access terminal is provided. The method includes processing automatic repeat request (ARQ) bits from a MAC bit processing unit for a previous sub-frame. The ARQ bits comprise a hybrid ARQ (H-ARQ) bit, a last ARQ (L-ARQ) bit, and a packet ARQ (P-ARQ) bit. The method also includes calculating the maximum allowed reverse rate and grant size for a MAC flow. The method further includes distributing grants to each application in the MAC flow. The method also includes storing a stored read pointer in an application transmit queue, for each application in the MAC flow. The method also includes preparing data for transmission, in response to storing the stored read pointer for each application in the MAC flow, based on the ARQ bits. The method also includes transmitting the data.10-14-2010
20100192035Method and Arrangement for Retransmission Using HARQ - The present invention relates to a method and device for enhancing coverage of a power-limited mobile terminal by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals.07-29-2010
20100153804Hybrid Automatic Repeat Request Round Trip Time And Acknowledgement/Negative Acknowledgement Repetition In Discontinuous Reception - A method is provided for detecting a hybrid automatic repeat request (HARQ) message. The method comprising setting a round trip time (RTT) based on a time delay associated with acknowledgement (ACK)/negative acknowledgement (NACK) repetitions, and receiving a retransmitted HARQ message when the RTT expires. Also provided is a user equipment (UE) comprising a processor configured to set an RTT based on a time delay associated with ACK/NACK repetitions, and receive a retransmitted HARQ message when the RTT expires.06-17-2010
20090077444METHOD AND APPARATUS FOR PROVIDING ACKNOWLEDGEMENT SIGNALING TO SUPPORT AN ERROR CONTROL MECHANISM - An approach is provided for acknowledgement signaling. A determination is made whether an error control mechanism is enabled for transmission of a data frame. The data frame is fragmented into a plurality of coding blocks. A frame check sequence is appended to one or more sequences of the coding blocks, wherein each of the sequences associated with the frame check sequence is to be acknowledged separately.03-19-2009
20100235701TRANSPORT LAYER CONTROL DEVICE, METHOD FOR TRANSMITTING PACKET, AND METHOD FOR RECEIVING PACKET - A transport layer control device includes a controller to establish or release a transmission control protocol (TCP) connection and to process retransmission of a lost packet using TCP, and a packet processor to number packets and to process transmission of the numbered packets using a user datagram protocol (UDP). A method for transmitting a packet includes establishing the TCP connection with a receiving device, numbering packets and transmitting the numbered packets to the receiving device using UDP, and retransmitting a lost packet to the receiving device using TCP in response to a retransmission request for the lost packet. A method for receiving a plurality of packets includes establishing the TCP connection, receiving numbered packets using UDP, requesting retransmission of a lost packet using TCP, and receiving the lost packet through TCP.09-16-2010
20100235702TRANSMITTER, FILE DISTRIBUTION SYSTEM, FILE DISTRIBUTION CONTROL METHOD AND FILE DISTRIBUTION CONTROL PROGRAM IN SYSTEM - Intended is to avoid retransmission requests from congesting and data retransmission from being disabled.09-16-2010
20100235703COMMUNICATION METHOD USING CODE PACKET IN WIRELESS NETWORK - The present invention, in preferred aspects, provides a communication method using a network coding packet in a wireless network, with reduced occurrence of negative acknowledgements, between a access point and plural mobile terminals. In preferred embodiments of the present invention, a communication method using a network coding packet in a wireless network comprises: (a) transmitting plural downlink multicast packets, each containing serial numbers of packets, to the first and second mobile terminals sequentially; (b) receiving a first negative acknowledgement from the first mobile terminal; (c) receiving a second negative acknowledgement from the first mobile terminal or the second negative acknowledgement skipping the first negative acknowledgement on occurrence of the first packet error at the second mobile terminal; and (d) transmitting a restoration packet containing exclusive OR packet of all errored packets in the restoration period defined in reference to the second negative acknowledgement from the first and second mobile terminals.09-16-2010
20100235704METHODS AND ARRANGEMENTS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to methods and arrangements in a wireless communication system, and in particular to uplink outer loop power control. A Node B identifies if a UE from which the Node B receives data is in a predetermined set of power challenged situations. The Node B transmits to the RNC an indication to hold the SIR target of the UE if the UE has been identified to be in a power challenged situation. As a consequence, the uplink outer loop power control (OLPC) procedure in the RNC will not change the SIR target of the UE. This implies that the output power level of the UE remains unchanged as long as the UE remains in the power challenged situation. Thus, user and network performance are improved in the wireless communication system.09-16-2010
20100138713INTERACTION METHOD BETWEEN ARQ AND HARQ FOR SYSTEMS WITH LONG ROUNDTRIP DELAY - Disclosed is an interaction method between an automatic repeat request (ARQ) and a hybrid automatic repeat request (HARQ) in a system having a long roundtrip delay. A transmission window for the ARQ is operated using inner feedback information from the HARQ, and a waiting window is operated using ARQ status information.06-03-2010
20100211840METHOD FOR RETRANSMITTING IN THE MULTI-CARRIERS SYSTEM - A method for reducing retransmission overhead in a system based on the asynchronous channel-adaptive retransmission scheme is disclosed. If the possibility of performing data retransmission is high, the system provides a method for transmitting synchronous duration (SD) information. According to the method for transmitting the SD information, the system does not transmit scheduling information whenever receiving a retransmission request, and synchronously transmits data during a predetermined synchronous duration. Namely, the data can be retransmitted without using the scheduling information.08-19-2010
20100211843SYSTEMS AND METHODS FOR TRANSMITTING DATA OVER LOSSY NETWORKS - An encoder/decoder system usable to decrease the probability of a failed transmission over a lossy wireless network. In one embodiment, data packets unsuccessfully sent over the wireless network may be retransmitted a particular number of times, depending on how important the data in the lost packet is. In another embodiment, when a number of transmission failures is determined to exceed a predetermined threshold, it may be signaled that multiple reference frames should be used for encoding predictions.08-19-2010
20100211842METHOD OF TRANSMITTING DATA USING CONSTELLATION REARRANGEMENT - A data retransmission method using hybrid automatic repeat request (HARQ) includes transmitting a data block, receiving a retransmission request signal for the data block, generating a retransmission block by performing swapping or inversion between bits constituting the data block according to the retransmission request signal, and transmitting the retransmission block.08-19-2010
20100211841METHOD, APPARATUS AND SYSTEM FOR CODING AND DECODING OF LDPC CODES - The present invention discloses a method, an apparatus and a system for low-density parity-check (LDPC) coding and decoding. The coding method includes the following steps: constructing each layer of a check matrix of a layered LDPC code used as an error correcting code; when data is initially sent by a data transmitting terminal, performing first-layer-coding of the data to be sent by using the first layer of a check matrix of the LDPC code, sending the first-layer-coded data; when data for (n−1)th retransmission is sent by the data transmitting terminal, performing nth-layer-coding of the data by using the nth layer of a check matrix of the LDPC code, sending the nth-layer-coded data, wherein n is an integer no less than 2. It is possible to reduce the system overhead, decrease the decoding delay, and improve the decoding performance by using the technical solution of the present invention which is also adapted to high-speed data services.08-19-2010
20100251053SYSTEM AND METHOD FOR REUSING RADIO RESOURCES - The present invention relates to a system and method of reusing radio resources capable of improving radio resource efficiency. According to an embodiment of the present invention, in a communication system including a repeater that retransmits signals transmitted from a satellite to user terminals, it is possible to reuse some of the radio resources used in a wide area coverage, such as the satellite, in a repeater coverage. Therefore, it is possible to ensure radio resources such that repeater data can be transmitted to user terminals without additional radio resources.09-30-2010
20100251055PCI.EXPRESS COMMUNICATION SYSTEM AND COMMUNICATION METHOD THEREOF - When a transaction layer circuit detects an error, error information in respect of transmission data is set in a TLP digest. The method includes: a step in which, at an endpoint (09-30-2010
20100251054System and Method For Component Carrier Reallocation - A method for supporting Hybrid Automatic Repeat Request (HARQ) transmission during component carrier (CC) reallocation. The method includes starting a HARQ process using a first CC, allocating a second CC, mapping the HARQ process from the first CC to the second CC, and transmitting remaining HARQ data associated with the HARQ process using the second CC. Also included is a method for supporting HARQ transmission during CC reallocation comprising starting a HARQ process using a first CC, determining to allocate a second CC, waiting until completion of the HARQ process using the first CC before allocating the second CC, and beginning another HARQ process on the second CC. Included is a method comprising starting a HARQ process using a first CC, allocating a second CC, discontinuing transmission using the first CC before completion of the HARQ process, and restarting new data using the second CC.09-30-2010
20100088567RADIO COMMUNICATION APPARATUS AND A METHOD OF TRANSMITTING A RETRANSMISSION PACKET - A radio communication apparatus having a retransmission function includes a pattern storing unit configured to store a correspondence between resource blocks used for a transmission packet and resource blocks used for a retransmission packet; and a packet scheduling unit configured to arrange the retransmission packet based on the correspondence.04-08-2010
20090259911Method and Apparatus for Improving Transmission Time Interval Bundling - A method for improving transmission time interval bundling transmission in a wireless communication system includes transmitting a first bundle at a first time point, and transmitting a second bundle at a second time point behind the first time point, wherein the second time point is located in a bundle round trip time of the first bundle, and the bundle round trip time is a specific multiple of a Hybrid Automatic Repeat Request Round Trip Time.10-15-2009
20090287976METHOD AND APPARATUS FOR EFFICIENTLY UTILIZING HARQ PROCESSES FOR SEMI-PERSISTENT AND DYNAMIC DATA TRANSMISSIONS - A method and apparatus are disclosed for efficient hybrid automatic repeat request (HARQ) process utilization for semi-persistent and dynamic data transmissions, wherein a reserved HARQ process identification (ID) can be reused. A subset of a plurality of HARQ process IDs is reserved to use for a semi-persistent allocation, and data is transmitted based on the semi-persistent allocation. A dynamic allocation is received via a physical downlink control channel (PDCCH). At least one of the reserved HARQ process IDs is selectively used for transmitting data based on the dynamic allocation.11-19-2009
20100083067Mobile Communication Apparatus - In a mobile communication system, when a receiving condition is deteriorated to the extent that reception does not succeed even by means of combination after retransmission to the maximum number of retransmissions, a transmission rate is restricted by reducing radio frames assignable to new data, and by setting dedicated retransmission frames, to which retransmission data are assignable, over the maximum number of retransmissions for the reduced transmission rate, thereby enabling a greater number of retransmissions than the maximum number of retransmissions without an increase of a buffer size. By this, a combination gain through retransmission is improved and a retransmission failure rate is decreased.04-01-2010
20090282310METHOD FOR RETRANSMITTING SIGNALS IN MIMO SYSTEM EMPLOYING HARQ SCHEME - A method for retransmitting signals in a MIMO system that uses an HARQ scheme is provided. In the method, an additional codeword-to-layer mapping scheme for retransmission in a MIMO system that uses an HARQ scheme is defined and used to efficiently retransmit signals. In addition, required information is obtained using existing control information to more efficiently retransmit signals in terms of control signal overhead.11-12-2009
20110066911COMMUNICATION DEVICE, COMMUNICATION SYSTEM, RECEPTION METHOD, AND COMMUNICATION METHOD - Provided is a communication device which performs a hybrid automatic repeat request process of requesting a transmission source to perform retransmission when an error is detected from a received signal. The communication device includes: a reception unit that receives a signal into which an initial transmission signal and a retransmission signal are multiplexed among signals including the initial transmission signal and the retransmission signal for any one signal; a detection order decision unit that decides an order of detection of the initial transmission signal and the retransmission signal from the signal received by the reception unit in response to the number of retransmissions of the initial transmission signal and the retransmission signal which are included in the signal received by the reception unit; and a signal detection unit that removes an interference component from the signal received by the reception unit by using a signal detected by the communication device according to the order decided by the detection order decision unit, and that detects the initial transmission signal and the retransmission signal. An increase of delay can be prevented when retransmission is repeated.03-17-2011
20110066910STEALTH MESSAGE TRANSMISSION IN A NETWORK - Embodiments of the invention include methods of transmitting a hidden message within a secured primary data transmission. In one embodiment, a method involves transmitting a primary data transmission over a computer network from a source host to a receiving host. Intentionally-corrupted packets are introduced within the primary data transmission in a manner providing a hidden message. For example, a pattern of intentionally-corrupted packets may be used to encode the hidden message. Alternatively, the hidden message may be embedded within the data area of the intentionally-corrupted packets. The intentionally-corrupted packets are received and interpreted at the receiving host to determine the hidden message.03-17-2011
20100192034Termination-Specifying ARQ protocol for Wireless Communications - A method of performing wireless communications. The method receives at a receiving unit a sequence of data blocks from a transmitting unit. The method also identifies at the receiving unit a first invalid sequential data block in the sequence. The method also communicates from the receiving unit a wireless message to the transmitting unit for provoking the transmitting unit to re-transmit a portion of the sequence of data blocks. The wireless message comprises a first field and a second field. The first field is for identifying the first invalid sequential data block. The second field is for identifying a last data block, from the sequence of data blocks, to which the wireless message applies.07-29-2010
20090319850LOCAL DROP CONTROL FOR A TRANSMIT BUFFER IN A REPEAT TRANSMISSION PROTOCOL DEVICE - A wireless communication device includes a transmit buffer and control logic coupled to the transmit buffer. The control logic selectively implements an “ACK2 scheme” that drops a data block in the transmit buffer based on reception of two consecutive HARQ ACKs associated with the data block.12-24-2009
20090319848PROVISIONING DEVICE MAKE AND MODEL INFORMATION FOR FIRMWARE OVER-THE-AIR (FOTA) - A device receives identifier, make, and model information associated with a device from a device activation system, and provides the device identifier, make, and model information to a database. The device also determines whether the device qualifies for a software update package based on the device make and model information, and provides, to the device, a notification of the software update package when the device qualifies for the software update package.12-24-2009
20090307556Hybrid Automatic Repeat Request Associations for Downlink Semi-Persistent Scheduling - A method is provided for associating initial transmissions and retransmissions in semi-persistent scheduling. The method includes providing a first initial transmission associated with a first assigned Hybrid Automatic Repeat Request (HARQ) process ID. The method further includes providing a second initial transmission associated with a second assigned HARQ process ID. The method further includes providing at least one retransmission associated with the first HARQ process ID. The second initial transmission occurs before the at least one retransmission, and the second assigned HARQ process ID is different from the first assigned HARQ process ID.12-10-2009
20090319849Data Reception Method, Repair Method and Corresponding Terminal - The invention relates to data reception, comprising: 12-24-2009
20110239073COMMUNICATION DEVICE AND COMMUNICATION METHOD - In a case where the F-RTO algorithm is simply combined with the exponential backoff algorithm which is being suppressed, there is a problem in that one a spurious timeout occurs, the spurious timeout continuously occurs since then. In order to solve the above problem, according to the present invention, in a communication device for transmitting data segments and receiving acknowledgements in response to the data segments, respectively and sequentially, suppressing an application of a backoff algorithm for increasing a retransmission timeout period at the time of retransmitting a data segment, and controlling the retransmission timeout period to retransmit the data segment, the spurious timeout is determined based upon the acknowledgement received immediately after the retransmission of the data segment. In an event of determining the occurrence of the spurious timeout, the retransmission timeout is increased.09-29-2011
20100223521Apparatus and method for transmitting/receiving broadcast data in a mobile communication system - A method and apparatus for transmitting a broadcast physical layer packet in a mobile communication system supporting multi-slot transmission and hybrid Automatic Repeat Request (H-ARQ) are provided. The method comprises initially transmitting the broadcast physical layer packet according to a fixed transmission format for at least one first slot interval and retransmitting the broadcast physical layer packet for at least one second slot interval using a variable transmission format different from the transmission format used in the first slot interval.09-02-2010
20110119547METHOD AND APPARATUS FOR DOWNLOADING FILES USING BOTH DIGITAL BROADCASTING AND INTERNET-BASED TRANSMISSION - Disclosed herein is a method and apparatus for downloading files using both digital broadcasting and Internet-based transmission. In the method, a file is divided into uniformly sized blocks and transmitting the blocks via digital broadcasting. In a case where blocks which failed to be received are present and retransmission of the blocks is required, if a specific block requiring retransmission must be retransmitted to a number of receivers which are equal to or greater than a predetermined number of receivers from among a total number of receivers, the specific block is retransmitted via digital broadcasting, whereas if the specific block must be retransmitted to a number of receivers which are less than the predetermined number of receivers, the specific block is retransmitted over an Internet.05-19-2011
20110119546RTP-BASED LOSS RECOVERY AND QUALITY MONITORING FOR NON-IP AND RAW-IP MPEG TRANSPORT FLOWS - In one method embodiment, transmitting a transport stream formatted according to a defined coding specification to a receive-and-process (RP) system, the transport stream format further comprising a non-Internet protocol (IP) format or a raw-IP format; providing a mapping stream, the mapping stream correlating the transport stream to a Real-time Transport Protocol (RTP)-formatted data stream that encapsulates the transport stream, the mapping stream comprising identifying information corresponding to the transport stream and second identifying information corresponding to the data stream; and transmitting the mapping stream to the RP system over an IP connection to enable RTP capabilities at the RP system.05-19-2011
20090106617TELECOMMUNICATION AND MULTIMEDIA MANAGEMENT METHOD AND APPARATUS - An apparatus for reliably transferring media over a network from a sending node to a receiving node. The sending node includes a media ascertaining element configured to ascertain if media to be transmitted from the sending node to the receiving node is either time-sensitive or not time-sensitive. The sending node also includes a transmission element that is configured to (i) transmit the non time-sensitive media from the sending node to the receiving node by adjusting the rate of transmission of the non time-sensitive media at the sending node based on network conditions and (ii) transmit the time-sensitive media from the sending node to the receiving node. The receiving node includes a media loss ascertaining element configured to ascertain at the receiving node if a predetermined acceptable network transmission loss level is met. The receiving node also includes a receipt report generator configured to (iii) generate one or more low priority requests for the retransmission of any missing time-sensitive media lost during transmission if the predetermined acceptable network transmission loss level is met and (iv) generate one or more low priority requests for the retransmission of any missing non time-sensitive media lost during the transmission. The transmission element of the sending node retransmits the missing time-sensitive media in response to the low priority requests when bandwidth on the network becomes available in excess of what is needed for the transmission of time-sensitive media.04-23-2009
20110113299Uplink H-ARQ Signalling Mechanism in a Wireless Communication system - A method in a wireless communication system comprising a user equipment, an anchor network station and at least one assisting network station, wherein 05-12-2011
20100318869Method and Apparatus For Providing Error Detection In Coordination With A Radio Link Layer - An approach includes detecting failure of an error detection scheme relating to transmission of data units of a transport block. A negative acknowledgement message is generated in response to the detection of the failure. The negative acknowledgement message is forwarded to a radio link controller for discarding one or more of the data units.12-16-2010
20090070650ERROR CORRECTION FOR A PERSISTENT RESOURCE ALLOCATION - Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station can allocate persistent resources to a client station, and can associate the client station or persistent resource allocation with a particular shared NACK channel. The base station can monitor the NACK channel for a NACK indicating a map error. The base station can also monitor the resource allocation to implicitly determine a map error. The base station can resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation can monitor persistent resource allocation information elements in map messages and can indicate failure to receive a persistent resource allocation information element in a NACK message on a preassigned share NACK channel.03-12-2009
20090070649METHOD AND SYSTEM FOR A TRANSMITTING ANTENNA SELECTION FAILURE RECOVERY MODE - Aspects of a method and system for a transmitting antenna selection failure recover mode are presented. Aspects of the system may include a transmitting mobile terminal that enables selection of a sequence of protocol data units (PDU), for example a sequence of sounding frames, which may be transmitted during an antenna selection procedure. During transmission of the selected PDU sequence, the transmitting mobile terminal may receive an antenna selection failure indication frame. The transmitting mobile terminal may enable retransmission of at least one previously transmitted PDU in the PDU sequence based on the failure indication. Transmission of subsequent PDUs in the PDU sequence may resume after the retransmission. Alternatively, upon receipt of the failure indication frame the transmitting mobile terminal may restart the selected frame sequence from the beginning, or may select a subsequent PDU frame sequence.03-12-2009
20100318870TRANSMISSION APPARATUS, RECEIVING APPARATUS, METHOD, AND STORAGE MEDIUM - In a transmission apparatus for transmitting periodical data transmitted at predetermined intervals and event data transmitted in response to occurrence of an event, an information generation unit generates identification information for a receiving apparatus to identify transmitted event data, and a control unit includes the generated identification information in the periodical data in response to generation of identification information by the identification information generation unit.12-16-2010
20100306611Wireless Subscriber Managing Storage of HARQ Packets - Apparatuses of wireless subscribers that manage storage of HARQ packets are disclosed. One embodiment of a wireless subscriber includes receiver circuitry for wirelessly receiving HARQ packets. CRC processing circuitry checks an error status of the received HARQ packets. A HARQ memory controller divides the HARQ packets into HARQ sub-packets for storage in HARQ memory. The HARQ memory controller records storage locations and a storage order of each of the HARQ sub-packets.12-02-2010
20100325505COMMUNICATION DEVICE, COMMUNICATION SYSTEM, RECEPTION METHOD, AND COMMUNICATION METHOD - A communication device used in a communication system requesting a retransmission signal when detecting an error in a received initial transmission signal, the communication device including: a reception unit which receives the initial transmission signal and the retransmission signal; a synthesis unit which synthesizes a signal based on a retransmission signal and at least one of a signal based on the retransmission signal or the initial transmission signal, when the reception unit receives the retransmission signal; and an iterative detection and decoding unit which performs signal decoding based on a signal obtained through the synthesis in the synthesis unit, thereby reducing the number of retransmissions and the number of iterations of the iteration process.12-23-2010
20100325504METHOD FOR TRANSMITTING/RECEIVING BROADCAST OR MULTICAST SERVICE AND TERMINAL THEREOF - A method for receiving a multimedia broadcast/multicast service (MBMS) is provided. The method for receiving a broadcast or multicast service includes: attempting receiving of data via a channel for the broadcast or multicast service; transmitting a negative acknowledgement to a base station if the data is not received via the channel; and receiving the data.12-23-2010
20100325503System and Method for Determination of Reserved Hybrid Automatic Repeat Request Identifiers - A system and method are provided for determining a minimum number of reserved hybrid automatic repeat request (HARQ) process identifiers (IDs). The method includes, determining a minimum number of reserved HARQ Process IDs based upon a maximum transmission time and a period of a semi-persistent resource allocation.12-23-2010
20100325506Downlink Transmissions for Type 2 Relay - A method for transmitting data to a user agent. The method includes a relay node receiving information from an access node, the information containing the data that is to be transmitted to the user agent and control information that the access node will use to transmit the data to the user agent. The method further includes the relay node transmitting the data to the user agent at the time the access node transmits the data to the user agent, the relay node using the control information that the access node uses to transmit the data to the user agent.12-23-2010
20100325502NEXT DATA INDICATOR HANDLING - Method and apparatus for a base station engaging in transmissions via at least a media access layer with a user entity is disclosed. The base station transmits data to the user entity over a high speed scheduling channel and a high speed packet data scheduling channel. The base station has a plurality of hybrid automatic repeat request (HARQ) entities cooperating with a scheduler for transmitting frames from at least the base station to the user entity for a given HARQ process. Each HARQ entity receives either a not acknowledge signal or an acknowledge signal or detects a discontinuous transmission for a given HARQ process. The base station transmits a next data indicator to the user entity. The user entity has at least one buffer associated with a given HARQ process. The buffer stores and performs incremental combining of received data relating to data from the base station. The buffer is capable of being flushed.12-23-2010
20100332936TECHNIQUE FOR ADVANCED ARQ BUFFER MANAGEMENT IN WIRELESS COMMUNICATION SYSTEM - An Automatic Repeat reQuest (ARQ) transmitter for use in a wireless communication system and method for its operation are provided. The method includes determining unutilized capacity of an ARQ receiver buffer in an ARQ receiver, determining if the ARQ receiver buffer can support an ARQ block to be transmitted based on the determined unutilized capacity of the ARQ receiver buffer, and if it is determined that the ARQ receiver buffer can support the ARQ block to be transmitted, transmitting the ARQ block to the ARQ receiver.12-30-2010
20100332935PACKET RETRANSMISSION - Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like.12-30-2010
20110010598User Specific Load Balancing - In accordance with exemplary embodiments of the invention there is a method and apparatus to detect with a hybrid automatic repeat request function a collision between an uplink packet re-transmission and a new uplink packet transmission within a hybrid automatic repeat request process, and in response, to dynamically allocating resources for transmitting the new uplink packet transmission in a different hybrid automatic repeat request process that does not collide with the uplink packet re-transmission. In accordance with other exemplary embodiments of the invention, there is a method and apparatus to transmit a packet re-transmission in a hybrid automatic repeat request process using a semi-persistently scheduled uplink resource, and responsive to receiving a dynamic allocation of a different hybrid automatic repeat request process, to transmit a new packet using the dynamically allocated different hybrid automatic repeat request process.01-13-2011
20110029831METHOD OF TRANSMITTING AND RECEIVING ARQ FEEDBACK INFORMATION - A method for transmitting and receiving ARQ feedback information in a wireless communication system is disclosed. A method for allowing a mobile station to transmit an ARQ feedback in a broadband wireless access system includes receiving an ARQ block and an ARQ feedback polling from the base station, wherein the ARQ feedback polling requests the mobile station to transmit ARQ feedback information indicating whether the ARQ block is successfully received, receiving a first uplink resource for transmitting the ARQ feedback from the base station, and determining whether the received ARQ block is successfully received. The first uplink resource has a minimum size capable of being allocated to the ARQ feedback information.02-03-2011
20110035640DATA PROCESSING APPARATUS, AND CONTROL METHOD AND STORAGE MEDIUM THEREFOR - A data processing apparatus capable of efficiently collecting information useful for network failure analysis. If image data transmission to a host computer has failed, a packet acquisition start instruction is given from a data transmission control unit to a packet acquisition control unit. Subsequently, image data is retransmitted to the host computer. After completion of the image data retransmission, a packet acquisition termination instruction is given to the packet acquisition control unit.02-10-2011
20110035641Proxy Apparatus and Method for Streaming Media Information and for Increasing the Quality of Stored Media Information - A proxy apparatus and method for streaming media information via at least one network and for building-up a good quality version of the media information. When a user device communicates with the proxy apparatus using a particular bandwidth and requests that media information be provided, the proxy apparatus first determines if a version of the media information encoded for the user device's connection bandwidth has been stored in the proxy apparatus. If a version of the media information encoded for the user device's bandwidth is not available from the proxy apparatus, the proxy apparatus sends a request to a media server for the media information. If the version of the media information has missing packets, the proxy device sends retransmission requests to the media server to obtain the missing packets, thereby building-up a good quality version of the media information.02-10-2011
20110035639METHOD AND SYSTEM FOR HANDLING HARQ OPERATIONS DURING TRANSMISSION MODE CHANGES - A method and device for handling hybrid automatic repeat request (‘HARQ’) operations during transmission mode changes, the method detecting a transmission mode change; and manipulating an HARQ process buffer based on the detecting. Further, a method and network element for handling hybrid automatic repeat request (‘HARQ’) operations during transmission mode changes, the method checking when a user equipment is in a transmission mode uncertainty window; and blocking communications to the user equipment or utilizing a downlink control information format 1A for communications to the user equipment.02-10-2011
20110041023COMMUNICATION DEVICE, COMMUNICATION SYSTEM, RECEPTION METHOD, AND PROGRAM - A communication device in a communication system which requests a retransmission signal when an error is detected from an initial transmission signal detected from a reception signal, the communication device including: a storage unit which stores information indicated by the detected initial transmission signal; a reception unit which receives a signal including a desired signal; an a priori information generation unit which generates a priori information for detecting the desired signal from the signal received by the reception unit based on the information stored by the storage unit when a retransmission signal related to the initial transmission signal of the information stored by the storage unit interferes with the desired signal; and a signal detection unit which detects the desired signal from the signal received by the reception unit using the a priori information. Therefore, the number of retransmission is reduced.02-17-2011
20110041022APPARATUS AND METHOD FOR RETRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for operating an Automatic Repeat reQuest (ARQ) in consideration of an operation state of a Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system. In the method, when an an ARQ timer expires, operation state information of a HARQ module for controlling a HARQ is determined. Whether to delay generation of Negative ACKnowledge (NACK) information in consideration of the operation state information of the HARQ module, then determined. When determining to delay the generation of the NACK information, the generation of the NACK information is delayed for a delay time determined in consideration of the operation state information of the HARQ module.02-17-2011
20110041021TRANSMISSION OF DIFFERENT REDUNDANCY VERSIONS ON DIFFERENT DEGREES OF FREEDOM - For downlink cooperative multi-point (CoMP) communication, each cooperating transmission point (e.g., base station) may send a retransmission packet with a different redundancy version to a user equipment (UE). Mechanisms may be provided to determine which transmission point should send packets with which redundancy version. For uplink CoMP, in order to reduce the backhaul overhead, each cooperating base station may share only a fraction of the retransmitted packet with the serving base station. Also, different retransmission packets with different redundancy versions can be transmitted to different cooperating base stations using spatial degrees of freedom.02-17-2011
20100153803RETRANSMISSION CONTROL METHOD AND RECEIVING SIDE APPARATUS - A retransmission control method has a physical control channel transmission step wherein a transmission side apparatus (06-17-2010
20090313515MINIMIZING SLOT WASTAGE USING OVERLAPPING HARQ REGIONS IN OFDMA WiMAX SYSTEM - A method and system for minimizing slot wastage by overlapping HARQ regions in a communication system. A control region allocation (CRA) utility defines a group of HARQ regions for transmission of control data. A HARQ region definition includes a starting symbol and a starting sub-channel number for the HARQ region, a number of symbols and a number of sub-channels to define the dimensions of the region and the slot duration for each sub-burst in a sequence of allocated sub-bursts. The CRA utility overlaps one HARQ region with the other to minimize slot wastage. The slots that carry data in one HARQ region overlap un-used slots in another HARQ region or are overlapped with a dummy allocation in the other HARQ region. Since mobile stations do not carry data for the slots with a dummy allocation, the overlap of HARQ regions avoids conflict with the HARQ operation.12-17-2009
20090089638Retransmission and retransmission request in data communication systems - Embodiments related to retransmission and a retransmission request are described and depicted.04-02-2009
20090089639Transceiver feedback and/or re-transmission control - A method and apparatus of providing ARQ feedback is disclosed. A first step of one method includes a transmitter transmitting ARQ blocks. A second step includes a receiver transmitting ARQ feedback messages, wherein each ARQ feedback message includes a time reference that indicates a transmission time of a latest transmission burst accounted for in the ARQ feedback message.04-02-2009
20110145671METHOD AND APPARATUS FOR ITERATIVE DETERMINATION OF MIMO ITERATIVE RECEIVER - A multiple input multiple output (MIMO) iterative receiver detects a soft log likelihood ratio value from a signal outputted from a transmitter and decodes the detected soft log likelihood ratio value in order to extract a hard value and a soft value from the detected soft log likelihood ratio value. After whether or not a CRC of the hard value is acknowledged is determined, a CRC of a data burst is determined or iteration of signal demodulation of the MIMO iterative receiver is determined by feeding back the soft value or a CRC of data is performed assembling signals of the burst unit in accordance with the determination result.06-16-2011
20100223522STATE DEPENDENT ADVANCED RECEIVER PROCESSING IN A WIRELESS MOBILE DEVICE - A method for receiver processing in a 3GPP Long Term Evolution (LTE) receiver processing chain in a wireless mobile device is provided. LTE initial sub-frame transmitted from a base station is received on a LTE signalling channel. The sub-frame is received using a basic receiver. An integrity check is performed to determine if the sub-frame was demodulated and decoded correctly by the basic receiver. An advanced receiver is enabled prior to receiving an expected retransmission sub-frame based upon the integrity check failing and a hybrid-acknowledgement request (HARQ) negative acknowledgement (NAK) being sent by the wireless mobile device. The retransmission sub-frame is received using the advanced receiver. The basic receiver is enabled when the integrity check of the retransmission sub-frame passes and a acknowledgement (ACK) is by the wireless mobile device or a new data indicator (NDI) is set in a control channel indicating that the transmission is an initial transmission.09-02-2010
20100131814Method for operation of synchronous HARQ in a wireless communication system - A method for operating synchronous HARQ between a transmitting station and a receiving station in a TDD communication system, includes configuring a plurality of HARQ processes at the transmitting station, and transmitting a data burst in a first subframe to the receiving station via one of the plurality of HARQ processes and using a frame structure including a plurality of regions of subframes. The method also includes receiving a second subframe transmitted from the receiving station and containing a HARQ feedback indicative of whether the data burst was correctly received at the receiving station. Further, the method includes determining whether the HARQ feedback is an acknowledgement (ACK) or a negative acknowledgement (NACK), and retransmitting, via the one of the plurality of HARQ processes, the data burst in a third subframe to the receiving station if it is determined that the HARQ feedback is a NACK. A total number of plurality of HARQ processes is determined based on a total number of uplink subframes between the first subframe and the third subframe.05-27-2010
20100131813METHOD FOR SELECTING PMI FOR NON-ADAPTIVE HARQ OPERATION IN A MIMO WIRELESS COMMUNICATION SYSTEM - A method for efficiently acquiring precoding information and transmitting an uplink signal using the precoding information in a User Equipment (UE) in a Multiple Input Multiple Output (MIMO) scheme is disclosed. The UE receives from a Base Station (BS) a scheduling grant signal including precoding matrix information to be used for an uplink signal transmission from the UE, precodes an uplink signal using the precoding matrix information included in the received scheduling grant signal, and transmits the precoded uplink signal initially to the BS. When retransmitting the uplink signal, if a scheduling grant signal is not received for the retransmission from the BS, the uplink signal is precoded and retransmitted using precoding matrix information included in a latest scheduling grant signal received for transmission of an uplink signal having a Hybrid Automatic Repeat reQuest (HARQ) process number equal to an HARQ process number of the uplink signal to be retransmitted.05-27-2010
20110087944Retransmission techniques in wireless networks - Retransmission techniques are disclosed. These techniques may be used in networks employing contention-based access schemes, such as CSMA. For instance, a device may receive a corrupted packet from a transmitting device, and determine a cause of the corruption. When the determined cause of the corruption is an in-network packet collision, the device allows the transmitting device to send a retransmission of the packet in accordance with a contention-based access scheme. However, when the determined cause of the corruption is other than an in-network packet collision, the device provides retransmission assistance to the transmitting device. This retransmission assistance may include a channel reservation for a retransmission, and/or one or more link adaptation suggestions for the transmitting device.04-14-2011
20100180171SYSTEM AND METHOD FOR RETRANSMISSION AND FRAGMENTATION IN A COMMUNICATION NETWORK - A system and method for fragmented transmission and retransmission in a communication network. According to various embodiments of the disclosed method and apparatus, a method for fragmenting a protocol data unit for transmission from a source node in a communication network includes the operations of determining a plurality of subpackets in which to send the protocol data unit having one or more service data units; creating a data unit header for a first of the plurality of subpackets; identifying one or more fragments for inclusion in the first of the plurality of subpackets; creating an aggregation subheader for the first of the plurality of subpackets, wherein the aggregation subheader comprises data identifying the one or more fragments; and concatenating the data unit header, one or more fragments and aggregation subheader to build the first of the plurality of subpackets.07-15-2010
20090327827RULE-BASED NETWORKING DEVICE - A networking system, device, and method are provided. The networking device typically includes a user-defined ruleset including HTTP request rules and HTTP response rules. The networking device may further include a request processor configured to receive an incoming HTTP request from the client, apply HTTP request rules to the incoming HTTP request, to thereby produce a modified HTTP request, and send the modified HTTP request to the server. The networking device may further include a response processor configured to receive an HTTP response to the modified HTTP request from the server, apply the HTTP response rules to the HTTP response, to thereby produce a modified HTTP response, and send the modified HTTP response to the client.12-31-2009
20090327826SYSTEM FOR TRANSMITTING AND RECEIVING PACKETS - A system has a transmitter for transmitting a sequence of packets, the transmitter has a first counter for storing a first sequence number, a first generating unit for generating an error check code for checking an error in each of the packets on the basis of the header and the data in each of the packets and the first sequence number, and a transmitting unit for transmitting each of the packet together with each of the error check code and a receiver has a second counter for storing a second sequence number, a second generating unit for generating an error check code for checking an error in each of the packets on the basis of the header and the data in each of the packets received from the transmitter and the second sequence number and an error check unit for checking an error in the sequence of the packet.12-31-2009
20090327825SYSTEM FOR MANAGING PROGRAM APPLICATIONS STORABLE IN A MOBILE TERMINAL - Management server 12-31-2009
20090313516ENHANCED HYBRID AUTOMATIC REPEAT REQUEST FOR LONG TERM EVOLUTION - A method and an apparatus are provided for receiving a transport block that is segmented into a plurality of code blocks (CBs), each CB having an attached cyclic redundancy check (CRC), decoding each of the plurality of CBs with attached CRC, determining whether each CRC fails, and in response to a determination that a CRC has failed, transmitting a CB index number of the CB attached to the CRC that has failed. Also provided are a method and an apparatus for a transmitter receiving an index number of a CB for retransmission (CBSIRT) attached with a CRC that has failed, determining the CB that correspond to the CRC that has failed based on the CBSIRT, and retransmitting the failed CB in a subsequent transmission time interval (TTI).12-17-2009
20100037113UTILIZING HARQ FOR UPLINK GRANTS RECEIVED IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate utilizing hybrid automatic repeat/request (HARQ) in system access communications. A HARQ entity is provided that manages a plurality of HARQ processes, which can typically use new data indicators (NDI) to determine when received data is a new transmission or retransmission. For resource grants, the HARQ entity can determine whether the communication is a new transmission or retransmission based on the type of message that contains the grant. In addition, an address comprised within the message, a previous use of the HARQ process, and/or the like can further be utilized to determine whether the message is a new transmission or retransmission. Once determined, the HARQ entity can provide the message to the appropriate HARQ process along with the indication of new transmission or retransmission.02-11-2010
20100058135Method and Apparatus for Handling HARQ Process of Semi-Persistent Scheduling - A method of handling a hybrid automatic repeat request (HARQ) process for semi-persistent scheduling (SPS) in a user equipment (UE) of a wireless communication system is disclosed. The method includes steps of configuring an SPS functionality which utilizes at least one HARQ process; receiving a first new data indicator (NDI) addressed to an SPS cell radio network temporary identifier (SPS C-RNTI) of the UE for a first HARQ process of the at least one HARQ process; and considering the next transmission to be received by the first HARQ Process as a first transmission of the first HARQ Process when receiving a second NDI addressed to a C-RNTI of the UE for the first HARQ process.03-04-2010
20090217118BASE STATION - A base station includes a control unit configured to avoid contention between a radio resource allocated to a transmission packet or a retransmission packet by a channel-condition-based scheduling unit and a radio resource allocated to a transmission packet or a retransmission packet by a persistent scheduling unit.08-27-2009
20100070816HARQ PROCESSING METHOD BASED ON MAXIMUM NUMBER OF TRANSMISSIONS - A method for performing a Hybrid Automatic Repeat reQuest (HARQ) operation in a User Equipment (UE) in a mobile communication system is disclosed. The method includes flushing an HARQ buffer corresponding to an HARQ process, if the number of transmissions in the HARQ process is equal to a maximum number of transmissions, receiving a downlink control channel signal including an uplink grant indicating the HARQ process from a base station, determining whether the HARQ buffer is empty, and transmitting new data via uplink resources indicated by the received uplink grant, if the HARQ buffer is empty.03-18-2010
20100070814BUFFER STATUS REPORT TRIGGERS IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate utilizing timers in conjunction with transmitting buffer status reports (BSR). A prohibit timer can be utilized to determine when BSRs can be transmitted to an eNB. The prohibit timer can be initialized or restarted upon transmitting a BSR to an eNB. A BSR retransmit timer can be used to determine when to retransmit a BSR. The BSR retransmit timer can be initialized upon transmitting a BSR to an eNB and restarted each time an uplink resource allocation is received from the eNB. Once the timer expires, if an uplink transmission buffer contains data (e.g., size>0), the BSR can be retransmitted to the eNB. Control data feedback can additionally be used to determine when to retransmit the BSR. In addition, in either case, the timer duration values can be provided by the eNB.03-18-2010
20100070813Packet Retransmission Method and Related Electronic Device - A packet retransmission method utilized for enhancing data transmission efficiency is disclosed. The packet retransmission method includes steps of retransmitting a first packet which carries a first data at a previous transmission when the first packet is not received successfully, and updating the first data to reform the first packet according to a second data when the retransmission is performed, wherein the second data is a next transmission data of the first data on timing sequence.03-18-2010
20100064193Beam-Forming - A method for optimizing re-transmission in a multi-antenna multi-terminal network, the method comprising the following steps performed by a station of the network: receiving from at least one terminal of multiple terminals one or more messages indicating a failed transmission of data sent to the multiple terminals; determining from the received one or more messages if a switching-to-beam-forming criterion is matched and, if the criterion is matched, initiating a re-transmission of the data to the at least one terminal via a beam-forming technique involving one or more of the multiple antennas and using at least one beam for the re-transmission of the data.03-11-2010
20100058137DATA RETRANSMISSION METHOD AND RADIO COMMUNICATION SYSTEM USING THE SAME - A data retransmission method for a radio communication system, in which a plurality of data streams are transmitted from a plurality of transmission systems, the method includes when there is a transmission error in transmission data in any of the plurality of data streams, adaptively selecting beamforming or spatial coding for retransmission of the transmission data; and retransmitting the transmission data with transmission errors by using either of selected beamforming or spatial coding, wherein a criterion for adaptively selecting the beamforming or spatial coding is that by comparing a retransmission period with a prescribed fading speed, the beamforming is selected when the retransmission period is smaller than the prescribed fading speed, while the spatial coding is selected when the retransmission period is smaller than the prescribed fading speed.03-04-2010
20100058133CONTENTION-BASED FEEDBACK FOR MULTICAST AND BROADCAST SERVICE - In some embodiments, a mobile device includes interface to receive multicast and broadcast service (MBS) signals and to transmit uplink signals, The mobile device also includes logic to detect errors in the transmission of the received MBS signals and provide negative acknowledge (NACK) signals indicating at least some of the errors in a contention-based MBS feedback channel in at least some of the uplink signals. Other embodiments are described.03-04-2010
20110154144ENHANCED BLOCK ACKNOWLEDGEMENT - Embodiments disclosed herein address the need in the art for enhanced block acknowledgement. In one embodiment, a receiver indicates a decoding delay for a maximum size aggregate frame in Block Ack negotiation, which may be used by a transmitter to determine to which Block Ack Request a Block Acknowledgement is responsive. In another embodiment, a Transmission Sequence Number (TSN) may be included in a Block Ack Request. The receiver includes the TSN in the corresponding Block Ack response. This allows the transmitter to determine which frames are “in transit.” The TSN may be used to identify blocks. In another embodiment, a TSN may be associated with one or more transmitted frames. While, the TSN is not transmitted with the Block Ack Request, the transmitter may determine which TSN corresponds with a Block Ack response in accordance with acknowledgements contained therein. Combinations of these techniques may be deployed. Various other aspects are also presented.06-23-2011
20100251052MULTIPLE PROTOCOL DATA TRANSPORT - Methods, media and systems are disclosed in which data is transferred from a data source apparatus to an application of a data receiving apparatus using both a first protocol and a second protocol. The data receiving apparatus identifies data received via the second protocol that has not been received via the first protocol, and delivers the identified data received via the second protocol to the application.09-30-2010
20110154143METHOD FOR DECODING DATA PACKETS IN A WIRELESS COMMUNICATION SYSTEM - A method is provided for decoding data packets in wireless communication schemes that use a Hybrid Automatic Repeat Request technique, and a receiver for wireless communication that performs such a method. The HARQ memory incorporated in a receiver for wireless communication is minimized to a size which only reserves memory for an average number of erroneous sub-packets. Following decoding, an error check is performed on a per sub-packet basis, and only the softbits of those sub-packets for which decoding errors have been detected are stored in the HARQ memory. Correctly decoded sub-packets are stored in a separate memory. This significantly decreases the size of the HARQ memory required at the receiver which is beneficial in terms of both silicon area and power consumption.06-23-2011
20120304034EDGE INCREMENTAL REDUNDANCY MEMORY STRUCTURE AND MEMORY MANAGEMENT - A wireless device for implementing Incremental Redundancy (IR) operations includes system processing circuitry operable to perform Physical (PHY) layer operations, Media Access Control (MAC) layer operations and Radio Link Control (RLC) operations of the wireless device. The system processing circuitry further includes an IR control module for processing IR transactions related to a received RLC data block and for tracking an Automatic Repeat Request (ARQ) receiving state and received block bit map and a Layer 1 (L1) module for intercepting and diverting the IR transactions to the IR control module and for passing a correctly decoded RLC data block to the RLC layer operations via the MAC layer operations thereby automatically synchronizing the RLC layer operations. An IR processing module is coupled to the system processing circuitry to perform IR operations on the received RLC data block based upon a direction from the IR control module.11-29-2012
20110078528USER TERMINAL AND METHOD FOR PERFORMING RETRANSMISSION CONTROL - A user terminal for receiving a plurality of data pieces for a plurality of processes that are simultaneously operated. Each of the data pieces has an indicator indicating whether the data piece is new data and is transmitted from a network apparatus that changes an indicator value on a process-by-process basis. The user terminal includes a data receiving unit for receiving the data piece having the indicator, a response transmitting unit for transmitting a response indicating an acknowledgement or a negative acknowledgement for the received data piece, and an indicator determination unit for determining whether the indicator of the received data piece is the same as the indicator of a previous data piece received immediately previously for the same process as the process of the received data piece and whether the response for the previous data piece indicates the acknowledgement to discard the received data piece.03-31-2011
20110078529ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD - A new-part acquiring unit acquires a part of a block generated by a block generating unit, as a new part to be contained in a packet. A retransmission-part acquiring unit acquires a part of a block corresponding to a NAK as a retransmission part to be contained in a packet among blocks held in a retransmission buffer unit. An encoding unit groups a new part acquired by the new-part acquiring unit and a retransmission part acquired by the retransmission-part acquiring unit, and generates a packet. A modulating unit modulates a packet output from the encoding unit. A wireless processing unit performs a predetermined wireless transmission process to a modulated packet, and transmits a processed modulated packet via an antenna.03-31-2011
20130166982METHOD, APPARATUS AND SYSTEM FOR SENDING AND RECEIVING A MEDIA STREAM - Embodiments of the present invention provide a method, an apparatus and a system for sending and receiving a media stream. In the embodiments of the present invention, during a transmission process of media content, if the packet loss occurs, and if retransmission still does not succeed after the retransmission has been attempted for finite times, the retransmission of the lost data packet is abandoned through notification of the retransmission suppression information, and transmission of a subsequent part of media stream is continued, which ensures uninterrupted transmission of the media stream, and avoids the occurrence of a screen mess of a picture, a picture jitter or pause, and even a program interrupt, thereby improving picture quality.06-27-2013
20080276147SYSTEM AND METHOD FOR PERFORMING A HARQ OPERATION IN AN OFDM-BASED RECEIVER - A system and method for performing a HARQ operation in an OFDM-based receiver utilizes a linked list scheme for a HARQ buffer, which is used to store soft information for HARQ entities with decoding errors. The device and method also combine soft information of a particular HARQ entity with previous updated soft information of the particular HARQ entity using a combined scaling factor that depends on a current scaling factor and a previous combined scaling factor.11-06-2008
20100058136System and Method for Rate Matching to Enhance System Throughput Based on Packet Size - A system and method for rate matching to enhance system throughput based on packet size is provided. A method for transmitting information includes encoding a block of N bits, where N is an integer, demultiplexing the encoded block of N bits into at least one subblock of systematic bits and at least one subblock of parity bits, and permuting the at least one subblock of systematic bits and the at least one subblock of parity bits to generate at least one permuted subblock. The method also includes forming at least one output block from the at least one permuted subblock, computing a starting position of a redundancy version for a hybrid automatic repeat request (HARQ) transmission based on a relationship between N and a threshold, and transmitting the redundancy version. The redundancy version begins at the computed starting position and ends when a specified number of bits has been transmitted.03-04-2010
20100058134INFORMATION PROCESSING APPARATUS, AND CONTROL METHOD, PROGRAM AND RECORDING MEDIUM THEREFOR - An information processing apparatus that receives image data sent from a sending apparatus in packet communications, the information processing apparatus includes: a receiving unit adapted to receive a packet for transmitting the image data; a detecting unit adapted to detect a transmission error in the packet; and a sending unit adapted to send a retransmission request for a packet in which the detecting unit has detected a transmission error to the sending apparatus; wherein, when the detecting unit has detected a transmission error in a packet that corresponds to a region of interest that has been preset in the image data, the sending unit sends a retransmission request for the packet with a higher priority than a transmission request for a packet that does not correspond to the region of interest.03-04-2010
20090249155METHOD AND APPARATUS FOR DECODING - Aspects of the disclosure can provide a method and an apparatus to decode a data stream based on multiple transmissions with efficient usages of storage and power resources. The method for decoding can include receiving a first plurality of encoded code blocks corresponding to a first transmission of a transport block, decoding the first plurality of encoded code blocks into decoded code blocks, error detecting the decoded code blocks, and storing a decoding history of the decoded code blocks. Further, the method can include receiving a second plurality of encoded code blocks corresponding to a retransmission of the transport block. The second plurality of encoded code blocks can map the first plurality of encoded code blocks, respectively. The method can selectively decode a subset of the second plurality of encoded code blocks based on the decoding history. In addition, the method can include storing soft bits for code blocks that failed decoding. The soft bits can be a combination of soft bits from multiple transmissions. The memory size for storing the soft bits can be reduced by dynamically freeing memory space associated with successfully decoded code blocks.10-01-2009
20090241000Automated content delivery to distributed media outlets - A method can include sending a request to a media content provider requesting media content and receiving the media content and instructions from the media provider. The instructions can be utilized by the media provider to broadcast the media content. The media provider can store the received media content in a database process the instructions then distribute the media content and the instructions to distributed media outlets. The media content provider can receive information indicating that the media content was broadcast by the distributed media outlets according to the instructions.09-24-2009
20090240999METHOD FOR RESOURCE ALLOCATION IN HARQ - A resource allocation method for use in a system for performing a decoding function by combining an first-transmitted packet with a re-transmitted packet includes: transmitting a packet using N resource blocks (where N=integer >0); receiving a first negative-acknowledgement (NACK) signal for the packet; and re-transmitting the packet using M resource blocks according to the first NACK signal (where M=N >integer >0). Therefore, the resources can be efficiently allocated during the re-transmission.09-24-2009
20080244351Communication Apparatus - A communication apparatus is provided. The communication apparatus includes an image read unit which reads image data from a transmission document; a tag read unit which wirelessly reads tag data stored in a wireless tag corresponding to the transmission document; an image data generation unit, if the tag data includes mark data indicating that a mark is to be added to the image data, generates composite image data by combining the image data and mark image data based on the mark data; and a transmission unit which transmits the composite image data as transmission document data to an external apparatus.10-02-2008
20090177937METHOD FOR RESOURCE ALLOCATION FOR HYBRID-AUTOMATIC REPEAT REQUEST - A resource allocation method for a HARQ is disclosed. This resource allocation method includes, transmitting an MAP message having specific information indicating whether or not a differential allocation is supported, storing MAP information contained in the MAP message during a predetermined frame, and upon receiving an NACK message during the predetermined frame, transmitting sub-burst information having differential allocation information related to sub-bursts to be retransmitted. If there are a large amount of HARQ traffics, each embodiment of the present invention transmits only differential information on the basis of MAP information of the initial MAP message when HARQ sub-bursts is retransmitted.07-09-2009
20080320355System for Identifying Localized Burst Errors - A system for detecting one or more localized burst errors in a receiving message comprised of a plurality of codewords. The system comprises a trellis code decoder for decoding a receiving message with a plurality of codewords and calculating one or more cumulative metrics of a maximum likelihood path and one or more alternative paths from the receiving message, an error detection code (EDC) decoder for detecting existence of one or more errors in the decoded receiving message received from the trellis decoder, and a localized burst error detector activated by the EDC decoder upon detecting the existence of one or more errors in the decoded receiving message to identify at least one corrupted codeword among the plurality of codewords using the one or more cumulative metrics of a maximum likelihood path and the one or more alternative paths, wherein the system requests the re-transmission of the corrupted codeword.12-25-2008
20080320354Context Transfers and Multi-Band Operation for Wireless Networks - Various example embodiments are disclosed relating wireless networks and relating to context transfers and multi-band operation in wireless networks. In an example embodiment, a multi-band scheduler may be provided for use in a wireless node. The multi-band scheduler may be configured to: receive one or more data units of a flow; assign each received data unit of the flow to a first frequency band of a plurality of frequency bands; determine a band transfer condition for the flow; and perform a context transfer from the first frequency band to a second frequency band for the flow based on the determined band transfer condition.12-25-2008
20090089641RETRANSMISSION SCHEME FOR COMMUNICATION SYSTEMS - One embodiment relates to a method of communicating data between a transmitter and a receiver of a communication system. In this method, a payload data stream is received from a network interface layer. The payload data stream includes data units eligible for retransmission and data units non-eligible for retransmission. These data units are grouped into containers, where a container is associated with a container identifier that distinguishes the container from other containers. The containers are grouped into data transmission units, where a data transmission unit includes at least one container along with redundancy information that facilitates error detection for that data transmission unit. The data transmission units are transmitted to the receiver as a transmission data stream. Other methods and systems are also disclosed.04-02-2009
20110179330WIRELESS COMMUNICATION TERMINAL AND COMMUNICATION CONTROL METHOD - A wireless communication terminal having a plurality of antennas with a variable relative distance includes a decoder for iterative decoding of reception signals including an error-correcting code received by the plurality of antennas) and a control unit for controlling an iteration count of decoding by the decoder in accordance with a distance between the antennas detected by an antenna distance detection unit for detecting the distance between the plurality of antennas.07-21-2011
20110179328System and Method for Ingesting Media Content in a Peer-to-Peer Network - The invention relates to a method and system hardware for ingesting media content in a peer-to-peer network from a data stream. The data stream is made up of a sequence of packets of media data, and each packet is identified by a sequence identifier. The method includes commencing caching of the data packets from the data stream. A missing data packet is identified using the sequence identifiers of the packets and the size of the missing data packet is determined. A portion of the memory medium is skipped to provide a skipped portion of medium having no data cached therein. The skipped portion has a size corresponding to the determined size of the missing data packet. The missing data packet is then retrieved and inserted into the skipped portion of the memory medium. The system includes an ingestion element configured to receive the content in a data stream, to define blocks of media data that make up the content, to generate metadata associated with each block, the metadata identifying the construction of the block from the data stream, and to transmit the data stream as a multicast stream to other network nodes. The other network nodes include at least one cache element configured to construct at least one of the blocks from the multicast data stream in accordance with the metadata, and to cache the data block. The system also includes a database accessible to network nodes, the database recording a location of each of the cached data blocks in the network.07-21-2011
20110161766REDUNDANCY STRATEGY SELECTION SCHEME - The present invention relates to a method, a terminal device and a network device for providing redundancy parameters for an automatic repeat request processing at a terminal device. The method includes selecting a redundancy strategy for an automatic repeat request processing at the terminal, and transmitting information indicating the selected redundancy strategy to the terminal device for generating redundancy parameters for the automatic repeat request processing at said terminal device. The information includes at least one of an index and a pointer to the selected at least one sequence.06-30-2011
20110161765RETRANSMISSION-BASED STREAM REPAIR AND STREAM JOIN - The Real-time Transport Protocol (RTP) and its related standards define a retransmission packet format and a way to give feedback via Negative ACKnowledge (NACK) packets for data that has been lost. In one embodiment, a unicast RTP repair session is associated with a main Source Specific Multicast (SSM) multicast session. Real-time Transport Control Protocol (RTCP) NACK packets are then used for feedback to a SSM feedback target address. This dynamically instantiates unicast RTP repair for multicast sessions. The repair scheme can be used for repairing multicast channels or joining new multicast channels. In another embodiment, a media transmission device shares an IP address with one or more other media transmission devices. The shared IP address can also be used to route multiple identical multicast media streams to different media stream receivers.06-30-2011
20080282126ACKNOWLEDGMENTS OF NEGATIVE ACKNOWLEDGMENTS BY RELAY STATIONS AND MOBILE STATIONS - Various example embodiments are discloses. According to one example embodiment, a method may include sending a packet to both a relay station and a destination station in a wireless network, receiving a relay station acknowledgment (ACK) or negative acknowledgment (NACK) from the relay station during an ACK/NACK frame, and receiving a destination station ACK or NACK from the destination station during the ACK/NACK frame. The relay station ACK or NACK may either acknowledge or negatively acknowledge successful receipt of the packet by the relay station. The destination station ACK or NACK may either acknowledge or negatively acknowledge successful receipt of the packet by the destination station.11-13-2008
20110047431Verification device, verification method, and verification program - A verification device includes a data verifying unit that verifies whether data in a packet has an error using a first or a second verification mode, a packet generating unit that generates a packet in accordance with a first packet generation mode or a second packet generation mode respectively corresponding to the first and the second verification modes, a failure monitoring unit that monitors a failure of a transmission line that requires a switching of the verification mode, a switching packet transmitting unit that transmits to a destination device, a switching packet for informing the switching of the verification mode used by the data verifying unit when the failure monitoring unit detects a failure or a removal of a failure, a generation mode switching unit that switches the generation mode, and a verification mode switching unit that switches the verification mode to the one informed by the switching packet.02-24-2011
20110047430IMPROVED HARQ PROCESS MANAGEMENT - The invention relates to a method for receiving data units when using one HARQ process of an HARQ protocol. The memory associated to the HARQ process is divided into several sub-areas, which are addressable by an identifier. Then, when data is received, same is stored in one of the sub-areas. By providing more than one sub-area for one HARQ process, it is possible to actually use one HARQ process for two (or more) different received data units, being from the same data flow or from a different data flow. The actual sub-area of the HARQ process for storing data units can be either freely selected at the receiving end or is indicated by an identifier associated with the data. Furthermore, persistent scheduled data is transmitted in units, scheduled at fixed time intervals. Thus, a control signaling field, usually used for indicating new units, can be used to store the identifier.02-24-2011
20110047429METHOD AND APPARATUS FOR PROVIDING IMPLICIT NEGATIVE ACKNOWLEDGEMENT - An approach is provided for utilizing implicit negative acknowledgement. A determination is made that a user equipment is out of synchronization (e.g., with respect to the uplink). A control signal specifying timing alignment information is generated for transmission to the user equipment. An implicit negative acknowledgement corresponding to retransmission of data is declared if an acknowledgement is not received within a predetermined time interval.02-24-2011
20090204862METHOD OF AN UPLINK HARQ OPERATION AT AN EXPIRY OF TIME ALIGNMENT TIMER - Disclosed is the radio (wireless) communication system providing a radio communication service and the terminal, and more particularly, to a method of an uplink HARQ (Hybrid Automatic Repeat reQuest) operation at an expiry of time alignment timer in an Evolved Universal Mobile Telecommunications System (E-UMTS) evolved from the Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system.08-13-2009
20110055652METHOD FOR CONDUCTING HARQ WITH A WIRELESS COMMUNICATIONS SYSTEM - Provided is a method of performing hybrid automatic repeat request (HARQ) of a receiver in a wireless communication system. The method includes: receiving data in a transmission time interval (TTI) unit consisting of a plurality of consecutive subframes; and transmitting acknowledgment (ACK)/non-acknowledgment (NACK) for the received data, wherein the data is received using a plurality of redundancy versions respectively allocated to the plurality of subframes, and the ACK/NACK is transmitted with an interval of a predetermined processing delay from a transmission time of a specific redundancy version among the plurality of redundancy versions.03-03-2011
20080256409HYBRID CORRECTIVE SCHEME FOR DROPPED PACKETS - In one embodiment, a hybrid packet repair scheme adaptively switches among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC) depending on the receiver population and the nature of the error prompting the repair operation. The NACK patterns are used to heuristically determine the degree of correlation among packet losses. In an additional embodiment, wasting bandwidth and processing on retransmissions of FEC that will fail to correct the errors is avoided by evaluating the nature of the error and the bandwidth needed to optimally repair it. Unicast retransmission, multicast retransmission, or FEC repair is then dynamically performed according to the loss patterns derived from the NACK arrivals and other network conditions.10-16-2008
20080256410Mimo System Performing Hybrid Arq and Retransmission Method Thereof - The present invention relates to a multiple antenna transmitting/receiving apparatus that performs a hybrid automatic repeat request, and a retransmission method thereof. An initial transmission signal is encoded into the form of an initial transmission matrix and transmitted to the receiving apparatus, the initial transmission matrix corresponding to a linear dispersion code, with a result of error checking performed on the initial transmission signal by the receiving apparatus. When an error is detected in the initial transmission signal, a first retransmission signal is generated by encoding the initial transmission signal in the form of a retransmission matrix and transmitted to the receiving apparatus. The retransmission matrix is formed of constituent elements of the initial transmission matrix but different from the initial transmission matrix, and corresponds to a linear dispersion code having the same capacity and diversity gain as those of the initial transmission matrix.10-16-2008
20100281322SYSTEM AND METHOD FOR DYNAMIC HYBRID AUTOMATIC REPEAT REQUEST (HARQ) ENABLE/DISABLE - A system and method of increasing data throughput in a wireless communications network between a base station (BS) and one or more mobile stations (MS) includes establishing a service flow (SF) and initially enabling a hybrid automated repeat request (HARQ) protocol; determining, at a particular time, the measure of quality of the communications channel; comparing the determined measure of quality with a predetermined channel quality threshold; and selectively disabling the HARQ protocol based upon a first comparison result while continuing the SF between the BS and MS. In other aspects, after selectively disabling the HARQ protocol, the method further includes determining that the time-varying measure of quality of the communications channel has deteriorated below the predetermined channel quality threshold; and selectively re-enabling the HARQ protocol in the established SF.11-04-2010
20080209299APPARATUS AND METHOD FOR RETRANSMITTING REQUEST IN WIRELESS RELAY COMMUNICATION SYSTEM - Data retransmission apparatus and method in a wireless relay communication system are provided. It is checked whether an Acknowledgement (ACK) message or a Negative ACK (NACK) message for data is received from a Relay Station (RS), which receives the data from a Mobile Station (MS). Scheduling information for transmitting the data is transmitted to the RS, when the ACK message is received from the RS. Errors are checked for in of the data, when the data is received from the RS. The RS is requested to retransmit the data, when the data has an error. Accordingly, since the RS retransmits only the error-free data to the BS, the BS can enhance the data reliability.08-28-2008
20110264975ENERGY AND SPACE EFFICIENT DETECTION FOR DATA STORAGE - Provided are methods and systems of selectively decoding optical data read from an optical storage medium based on a checksum algorithm technique. In one embodiment, optical data is converted into a data stream and buffered, and the checksum algorithm is applied to the data stream. If the calculated checksum matches an encoded checksum of the data stream, the data stream may be output without requiring further decoding. If the calculated checksum does not match the encoded checksum, the buffered data stream may be decoded to produce a corrected data stream, and the checksum algorithm may be applied to the corrected data stream. In some embodiments, the optical data may be re-read if the corrected data stream does not pass the checksum test, and the data stream obtained from the re-reading may be combined with the buffered data stream for further decoding.10-27-2011
20100287435DEDICATED INTERFACE TO FACTORY PROGRAM PHASE-CHANGE MEMORIES - A nonvolatile memory device has a dedicated serial programming port to provide a data path to memory storage. A dedicated power pin supplies power for the programming port to receive data and provide storage in the nonvolatile memory while a power pin for normal device operation is not powered.11-11-2010
20110093754DATA TRANSMISSION METHOD AND DATA RE-TRANSMISSION METHOD - A method which can reduce loss in data transmission is provided. A data block is prepared in a high-level layer and the data block is transmitted in a low-level layer. Status report information associated with reception or non-reception of the data block is received through the low-level layer. When a receiver fails to receive data transmitted from a transmitter, the transmitter can rapidly recognize the reception failure and can retransmit the data.04-21-2011
20100293427RADIO COMMUNICATIONS APPARATUS AND METHOD USED IN A MOBILE COMMUNICATIONS SYSTEM - A radio communications apparatus having a retransmission function that has a determination portion configured to receive an error detection result obtained for a first packet transmitted to a destination apparatus and determine in a first sub-layer whether the error detection result is a positive acknowledgement; a transmission portion configured to transmit a second packet following the first packet to the destination apparatus; a timer portion configured to measure a predetermined period of time after the second packet is transmitted; and a report portion configured to report to a second sub-layer that is an upper sub-layer of the first sub-layer that the error detection result is the positive acknowledgement when no message is received from the destination apparatus during the predetermined period of time, the message indicating that the error detection result is falsely determined to be the positive acknowledgement.11-18-2010
20100293428Method for Transmitting Data to User Equipments, Communication System, Base Station and User Equipment - A method is provided for transmitting data to user equipments, a communication system, a base station and a mobile station. Data is transmitted to user equipments from a first base station (BBS) and from second base stations (CBS) in a time division multiplexed manner in frames (F). Each frame (F) has a first sub-frame and a second sub-frame. The user equipments are located in cells, each cell comprising a second base station (CBS). Data is transmitted wirelessly, during a first sub-frame of a frame, data from the first base station (BBS) to user equipments in a plurality of cells. Data is transmitted wirelessly, during the second sub-frame of the frame (F), from second base station (CBS) to at least one the plurality of user equipments. The data being transmitted from the first base station (BBS) is also transmitted by the second base station (CBS) to at least one of the plurality of cells.11-18-2010
20110119550WIRELESS COMMUNICATION SYSTEM - A network controller for facilitating roaming of a mobile wireless communications device between access points communicates with at least one access point over a wired network which, in turn, communicate with a mobile wireless communications device over a wireless network. The network controller includes a data processing system including a protocol stack that facilitates a communication session between the mobile device and a network device on the wired network, and a session table identifying session information for each said communication session. The session information identifies the current access point with which the mobile device is currently associated. The protocol stack updates the session table from session information received from the current access point, maintains a first virtual circuit with the network device, maintains a second virtual circuit with the current access point, and bridges communication between the virtual circuits in accordance with the session information.05-19-2011
20110119549METHOD OF ASSOCIATING AUTOMATIC REPEAT REQUEST WITH HYBRID AUTOMATIC REPEAT REQUEST - A method of associating ARQ with HARQ is disclosed. The method includes constructing a plurality of coding blocks using an MPDU received from an ARQ entity of a transmitter, transmitting each of the coding blocks to a receiver according to an HARQ operation, discontinuing the coding block transmission, when transmission of a coding block is failed, transmitting an error message indicating a number of the failed coding block to the ARQ entity of the transmitter, receiving ARQ blocks corresponding to the failed coding block from the ARQ entity of the transmitter, constructing at least one coding block using the received ARQ blocks, and retransmitting the at least one coding block to the receiver according to the operation.05-19-2011
20110119548RADIO TRANSMISSION DEVICE AND RETRANSMISSION CONTROL METHOD - Provided is a radio transmission device which can simultaneously reduce: a radio resource consumption amount required for signaling to report band allocation information and a HARQ operation mode, and a transmission packet collision ratio accompanying a reception error of the band allocation information. The radio transmission device includes a transmission control unit (05-19-2011
20110126069METHOD AND APPARATUS FOR CONTROLLING RETRANSMISSION - In a retransmission control method, a HARQ process is performed by transmitting a HARQ burst to a receiving side. When the HARQ process for the HARQ burst is terminated with unsuccessful transmission of the HARQ burst, transmission of an ARQ block corresponding to the HARQ burst is initiated.05-26-2011
20110126068SIGNAL TRANSMISSION METHOD USING MULTIPLE HARQ - A method is described for transmitting signals in a mobile communication system which splits an information block into a plurality of split-information blocks and performs a hybrid automatic repeat request (HARQ) process upon each of the split-information blocks. A method is also described for reducing control information overhead by transmitting control information only through one control channel when splitting an information block and transmitting split-information blocks through a plurality of subframes or a plurality of resource blocks. The segmentation of the information block is performed in a physical layer to reduce medium access control (MAC) overhead and to simplify implementation.05-26-2011
20110126067System and Method for Multiple Input, Multiple Output (MIMO) Communications - A system and method for MIMO communications is provided. A method includes receiving a data block of P matrices from a transmitter, and determining if operating conditions are met. The method also includes if operating conditions are not met, computing a test position, selecting a codeword based on the test position, and computing a metric. The metric may then be compared with an error radius to determine a validity of the codeword. If the codeword is invalid, another codeword is selected. If the codeword is valid, then the codeword is stored if all matrices have been evaluated, else another matrix is selected for evaluation. If matrices earlier in the data block have untested codewords while all codewords for a matrix being evaluated have been tested, backtracking may be performed. After the codewords for the data block have been found, the stored data may be outputted and processed.05-26-2011
20110138243SYSTEM, METHOD AND COMPUTER READABLE MEDIUM FOR COMMUNICATION OF ENCODED MESSAGES - A message encoding specification and implementation where a receiver of an encoded message determines if the message can be decoded. If the receiver can decode the message, it does so and continues processing the message. If the receiver cannot decode the message, it returns a distinguished failure message to the sender, expecting the sender to resend the message using a different encoding scheme. When a sender receives the distinguished failure message that the receiver cannot decode the message, the sender encodes the message using an alternate encoding scheme, if one is available, and resends the message. The process continues until the sender has tried all available encoding schemes. If a sender exhausts the collection of available encoding schemes without finding one the receiver can successfully decode, the sender treats the failure as an error.06-09-2011
20110138245Communication Network Element and Method for Transmitting Data - A method of transmitting data in a communication network is provided, wherein the method includes sending an error message indicating that a data packet transmitted using a cooperative transmission scheme on a first channel is not decoded correctly, and retransmitting the data packet using a second channel which is different from the first channel.06-09-2011
20110138244DETERMINING HYBRID AUTOMATIC REPEAT REQUEST (HARQ) TIMING - A communication apparatus (CA) such as a mobile node/station (MN), a base station (BS), or a radio station (RS) may support determination of HARQ timing. The CA may generate at least in part one or more generalized frames such as a frequency division duplex (FDD) frame or a time division duplex (TDD) frame. The generalized FDD and TDD frames may include support to determine the HARQ timing considering various factors, which may affect the HARQ timing. The FDD and TDD frames may include information corresponding to various factors to determine the HARQ timing considering factors such as DL/UL ratio, number of sub-frames per frame, variable transmission time interval (TTI), relay zones, legacy IEEE® 802.16e zones, and availability of ACKCH.06-09-2011
20100332934METHOD OF AND TRANSMITTING DEVICE FOR TRANSMITTING A DATA BLOCK - A method of transmits a data block of a type from a transmitting device (for example a transmitting network node) to a receiving device (for example a receiving network node), in particular during a temporary block flow. A transmitting device is capable of receiving at least two different types of positive/negative acknowledgements for data blocks of said type from said receiving device and the reaction of the transmitting device to the positive/negative acknowledgements depends on the type of the said received positive/negative acknowledgement.12-30-2010
20100180170METHOD FOR RETRANSMITTING PACKETS IN MIMO SYSTEM - Provided is a method for retransmitting packet in a Multiple Input Multiple Output (MIMO) system. The method includes: in a receiving block, decoding packets received from a transmitting block and detecting whether an error exists or not in the packets; if the error is detected, transmitting a negative acknowledgement (NACK) signal informing transmission failure of the packets to the transmitting block; calculating channel quality information (CQI) values for transmission-failed packets after performing successive interference cancellation (SIC) with respect to all antenna combinations to retransmit the transmission-failed packets; and selecting an antenna combination having CQI values of the transmission-failed packets which are equal to or greater than respective initial CQI values of the transmission-failed packets among the antenna combinations, and transmitting information of the selected antenna combination to the transmitting block.07-15-2010
20110191647COMMUNICATION INTERFACE AND PROTOCOL - An apparatus includes a receiver, an error detection unit, and an acknowledgement unit. The receiver may receive frames of data from a transmitter unit of a second apparatus via a first communication path. The error detection unit may detect data errors in the frames of data received via the first communication path. The acknowledgment unit may maintain an acknowledgement indicator indicative of whether frames received by the apparatus are error free. In response to the error detection unit detecting an error, the acknowledgement unit may indicate an error condition exists by freezing a value of the acknowledgement indicator, or alternatively the acknowledgement unit may set a current value of the acknowledgement indicator to a predetermined error value. Further, the apparatus may successively convey values of the acknowledgement indicator to the second apparatus via a second communication path while the apparatus is receiving frames.08-04-2011
20100122134APPLICATION-CONFIGURED, CONTENT-BASED RETRANSMISSION SCHEME FOR DROPPED MEDIA ACCESS CONTROL FRAMES - In a generic Media Access Control (MAC) protocol, the retransmission of a dropped MAC frame is independent of the payload. Methods, systems, and computer products defining a mechanism of retransmission of one or more frames based on content of the payload are provided. The system identifies the content as text or video and retransmits if the content is text. The one or more frames may be retransmitted using a specific retransmission scheme. The retransmission is checked again to determine if it is was dropped, and transmitted again if it was dropped.05-13-2010
20090307554METHOD AND APPARATUS FOR PERFORMING A BUNDLED TRANSMISSION - A wireless transmit/receive unit (WTRU) may send a bundled transmission of a packet repeatedly over at least two consecutive transmission time intervals (TTIs). The WTRU may not process a hybrid automatic repeat request (HARQ) feedback for the packet after sending the bundled transmission. The bundled transmission may be configured per HARQ process. The WTRU may override the bundled transmission and may transmit a HARQ retransmission of another packet in one of the TTIs scheduled for the bundled transmission if a TTI scheduled for the HARQ retransmission of another packet overlaps the TTIs scheduled for the bundled transmission. Alternatively, the WTRU may transmit a non-bundled transmission of a packet and send a bundled HARQ transmission of the packet on a condition that HARQ feedback indicates a failure of delivery of the packet. The WTRU may not process an HARQ feedback in an E-HICH for the packet after sending the bundled transmission.12-10-2009
20110087943RELIABLE COMMUNICATIONS IN ON-CHIP NETWORKS - Techniques for reliable communication in an on-chip network of a multi-core processor are provided. Packets are tagged with tags that define reliability requirements for the packets. The packets are routed in accordance with the reliability requirements. The reliability requirements and routing using them can ensure reliable communication in the on-chip network.04-14-2011
20110093755UPLINK DATA TRANSMISSION METHOD AND TERMINAL APPARATUS - In the field of radio communications, an uplink data transmission method is provided, which includes: receiving first Physical Downlink Control Channel (PDCCH) signaling sent by a Base Station (BS); and if initial transmission is determined according to a New Data Indicator (NDI) of the first PDCCH signaling, determining that a Modulation Code Scheme (MCS) in the first PDCCH signaling is a normal MCS, and performing an uplink data transmission. A terminal apparatus is further provided. Therefore, the effectiveness of the uplink data transmission is guaranteed in the case that the PDCCH signaling of scheduling initial transmission is lost in the uplink data transmission, and when the uplink data is transmitted, packet loss and false indication of a lower layer to transmit data are avoided.04-21-2011
20110093756METHOD FOR DL SEMI-PERSISTENT SCHEDULING HARQ PROCESS ALLOCATION AND APPARATUS THEREOF - According to the present invention, there is proposed a method for HARQ process allocation for DL SPS transmission between a base station and an UE, and a system thereof. The method comprises steps of: at the base station side, configuring a HARQ process preserved for the SPS transmission and its related control information based on RRC or other control instructions from the upper layer, and transmitting the configured HARQ process and its related control information to the UE; sending down an SPS-CRNTI-based PDCCH to activate SPS configuration and indicating a HARQ process for a first SPS transmission before the first SPS transmission; determining a HARQ process allocated to the current transmission, and allocating the HARQ process preserved for the SPS transmission to possible DS transmissions when the SPS transmission is in idle; and determining a type for transmission or retransmission to be carried in the current HARQ process based on a preset criteria, then performing the determined type of transmission or retransmission, and correspondingly sending a PDCCH down; at the UE side, receiving the RRC or other control instructions from the base station; receiving PDCCH from the base station to activate SPS configuration and obtaining the time for the first SPS transmission and used HARQ process; receiving respective data transmission or retransmission and possible PDCCH from the base station; and determining a type for the received data transmission or retransmission based on a preset criteria, so as to perform respective data combination. The method and system according to the present application achieve HARQ process allocation for DL SPS transmission, while improving the DS transmission chance and reducing the ambiguity between different SPS transmissions and between SPS transmission and DS transmission.04-21-2011
20100115365SYSTEM AND METHOD FOR DATA TRANSMISSION - A method for a transmitter to transmit data represented by a plurality of service data units (SDUs). The method includes: generating, for a first transmission, a data block from one or more of the SDUs, or from one or more fragments of the SDUs; generating, based on a protocol, a protocol data unit (PDU) to include the data block; and transmitting the PDU.05-06-2010
20100115363COOPERATIVE H-ARQ SUPPORTING METHOD - In the hybrid automatic repeat request (H-ARQ) supporting method for cooperative transmission, a receiver selects one H-ARQ repeat method from among the chase combining method and the incremental redundancy method according to the SNR when the data packet cooperatively transmitted by transmitters generates an error. Also, the method for the receiver to select a repeat transmitter includes a method for selecting a repeat transmitter in advance, a method for removing a transmitting node from a repeat transmitter group when the SNR of the transmitting node is low, and a method for estimating the SNR of each transmitter for each predetermined time frame and selecting the transmitter having the greatest SNR as the repeat transmitter.05-06-2010
20100115362DEVICE AND METHOD FOR TRANSMITTING DATA - A data transmission device transmits coded packets and a code for decoding the coded packets to a receiving device. The data transmission device retransmits the coded packets and the code to the receiving device when failing to receive feedback information on a decoding success state of the coded packets from the receiving device. Accordingly, the data transmission device can increase the radio resource efficiency in the wireless communication system.05-06-2010
20100115359METHOD OF ENCODING/DECODING USING LOW DENSITY CHECK CODE MATRIX - A method of encoding data using a parity check matrix is disclosed. The method of encoding data using a parity check matrix includes receiving information bit streams, and encoding the information bit streams using the parity check matrix which includes a systematic part and a parity part having a lower triangle type.05-06-2010
20100115358Method for Efficient Control Signaling of Two Codeword to One Codeword Transmission - In a wireless communication system (05-06-2010
20100037112FRACTIONAL HARQ RE-TRANSMISSION - A mechanism is provided to allow an HARQ retransmission to more closely match the receiver's need for energy with the additional energy sent over the wireless link. In one aspect, the receiver sends the transmitter qualitative feedback which indicates to the transmitter an approximate amount of additional energy that the receiver needs to successfully decode the transmission.02-11-2010
20090300454TRANSMISSION APPARATUS, ACCESS POINT AND SYMBOL TRANSMISSION METHOD - In a transmission apparatus in a MIMO-OFDM communication system employing a cyclic diversity, a cyclic delay controller sets plural delay magnitudes different for respective antennas, in cyclic delayers for each predetermined timing. The cyclic delayers receive symbols subjected to orthogonal frequency division multiplexing, for the respective ones of plural allotted antennas. Besides, the cyclic delayers bestow cyclic delays on the individual symbols of the respective antennas in accordance with plural set delay magnitudes. The symbols cyclically delayed are outputted from the antennas. As the delay magnitudes, a first delay magnitude at a first transmission timing and a second delay magnitude at a second transmission timing are different for one antenna, and the delay magnitudes differ in the respective antennas for one transmission timing. Thus, in a MIMO-OFDM transmission scheme, a frequency diversity and a time diversity are enhanced to heighten a retransmission efficiency in a data retransmission mode.12-03-2009
20090300455DATA TRANSMITTING DEVICE, CONTROL METHOD THEREFOR, AND PROGRAM - A data transmitting device determines a coding rate used to perform error correction coding processing for data transmitted to a data receiving device based on information relating to the function of concealing an error occurring in data transmitted from the data transmitting device, the function being provided in the data receiving device. Then, the data transmitting device performs the error correction coding processing for data transmitted to the data receiving device based on the determined coding rate, and transmits the data subjected to the error correction coding processing to the data receiving device.12-03-2009
20090300452ERROR IDENTIFYING METHOD, DATA PROCESSING DEVICE, AND SEMICONDUCTOR DEVICE - A data processing device which performs a data transmission between semiconductor devices using a plurality of signal lines. In the data processing device, when there occurs an error in a data transmission from a transmitting device to a receiving device using a plurality of signal lines, data in which the error has occurred is stored. The stored data is compared bit by bit with non-erroneous data, thereby designating a bit in which error has occurred in the stored data.12-03-2009
20090300453TRANSMITTING APPARATUS AND WIRELESS COMMUNICATION METHOD - A transmitting apparatus and a wireless communication method are provided. The transmitting apparatus is capable of transmitting, together with transmission data, retransmission data in response to an HARQ from a receiving apparatus, according to an MCS determined based on a request from the receiving apparatus and includes a storage portion which stores information indicating a transition of an FER with respect to a communication quality for each MCS in both cases in which an HARQ response is enabled and disabled, an HARQ switching portion which switches whether to enable or disable the HARQ response in accordance with a QoS class of data to be transmitted, and an MCS switching portion which switches an MCS in accordance with the switching of whether to enable or disable the HARQ response, while referring to the information stored in the storage portion.12-03-2009
20090300450PACKET RETRANSMISSION AND MEMORY SHARING - Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like.12-03-2009
20090300449Method and System for Message Retransmission and Intersystem Message Delivery - The present invention discloses a method and a system for resending messages with a minimized number of retries and maximized timeliness of delivering the message to the receiving party. The method sets a retry period for a message that needs to be resent, determines a retry time according to the retry period, and sends the message after the retry time is reached. The retry period increases as the number of retries increases. The method and the system can ensure reliable delivery of notification messages and support many transmission protocols between different systems, does not require the receiving party to implement complicated interaction protocols to reliably receive a notification message, and is suitable for widespread use in the Internet. Moreover, the disclosure supports multiple transaction processing, can be used as a common business transaction application platform, and allows flexible expansion of multiple transactions and multiple protocols.12-03-2009
20100070815VIRTUAL EXTENSION OF CRC LENGTH - An apparatus and method for generating a Scheduling Assignment (SA), which reduces a probability of an incorrect action by a User Equipment (UE) in response to a reception of the SA, in a communication system wherein a base station transmits the SA being a first type or a second type and including at least one Information Element (IE). The method includes setting at least one bit in the at least one IE with an arbitrary value, if the SA is of the first type; setting the at least one bit in the at least one IE with a predetermined value, if the SA is of the second type; and setting any remaining bits in the at least one IE with arbitrary values.03-18-2010
20100031107METHOD FOR VARIABLE SUB-CARRIER MAPPING AND DEVICE USING THE SAME - A variable sub-carrier mapping method comprising steps of: applying different bit interleaving schemes to different transmissions of a hybrid automatic retransmission request (HARQ) process in side of transmitter; and in the side of the transmitter, modulating symbols onto sub-carriers for transmitting. Different transmissions in one HARQ process adopt different bit interleavers or different symbol-to-sub-carrier mapping methods so as to realize that the same bit of different transmissions in one HARQ process is transmitted via different sub-carriers. Therefore, the system achieves the frequency diversity gain and reduces the probability of failure of HARQ transmission caused by that some bits are always transmitted via the sub-carrier with the same deep fading. In this way, the average HARQ retransmission times can be reduced and the system throughput can be improved.02-04-2010
20100031108Seamless change of retransmission and rescheduling queues in a communication system - A system and method for changing retransmission and rescheduling queues to support retransmission in a communications system is presented. A method for changing queue size values includes, for an increase in data rate, determining a new retransmission queue size value for a retransmission queue at the transmitting device and a new rescheduling queue size value for a rescheduling queue at the receiving device such that an amount of time for a DTU to enter and exit the retransmission queue is greater than a roundtrip delay. For a decrease in data rate, the method includes determining the new retransmission queue size value and the new rescheduling queue size value such that an amount of time for a DTU to enter and exit the retransmission queue is less than a maximum delay. Systems and methods for changing the retransmission and rescheduling queue sizes are also presented.02-04-2010
20100023830LINK ADAPTATION DEPENDENT CONTROL SIGNALING - The invention relates to a method and apparatus for providing an improved scheme for encoding control information for transmitting user data. Further the method and apparatus may allow for reducing the control signaling overhead. These advantages may be achieved by interpreting information on at least one link adaptation parameter for transmitting the user data to determine the at least one link adaptation parameter for transmitting the user data, wherein the at least one link adaptation parameter for transmitting the user data is comprised in control signaling. According to the invention the interpretation of the information depends on at least one link adaptation parameter employed for transmitting the control signaling.01-28-2010
20100017672Method Of Retransmission Control In Wireless Relay System, Wireless Relay Station, And Wireless Base Station - If a reception result from an MS for the previous transmission data is a reception failure, second allocation information for retransmitting the previous transmission data is generated by an RS based on allocation information on a wireless resource for transmission of new data. The second allocation information and the previous transmission data are transmitted to the MS, and the new data is buffered.01-21-2010
20100017671Hybrid Automatic Repeat Request Process Mapping Rule - A method is provided for associating initial transmissions and retransmissions. The method includes determining a HARQ process ID for the initial transmission based upon a system frame number, a subframe number, a period associated with the initial transmission and/or a number of reserved HARQ process IDs. The method further includes associating the initial transmission with a retransmission based upon the HARQ process ID.01-21-2010
20110219280COLLECTIVE NETWORK FOR COMPUTER STRUCTURES - A system and method for enabling high-speed, low-latency global collective communications among interconnected processing nodes. The global collective network optimally enables collective reduction operations to be performed during parallel algorithm operations executing in a computer structure having a plurality of the interconnected processing nodes. Router devices are included that interconnect the nodes of the network via links to facilitate performance of low-latency global processing operations at nodes of the virtual network and class structures. The global collective network may be configured to provide global barrier and interrupt functionality in asynchronous or synchronized manner. When implemented in a massively-parallel supercomputing structure, the global collective network is physically and logically partitionable according to needs of a processing algorithm.09-08-2011
20090089640RETRANSMISSION APPARATUS, SYSTEM AND METHOD FOR RETRANSMITTING BROADCAST PACKETS - A retransmission apparatus retransmits TS (Transport Stream) packets based on a received broadcast wave to a plurality of receiving apparatus through a network. The retransmission apparatus has a TS packet determination unit for determining whether a continuity of circulation counter values in the TS packets keeps in length equal to or more larger than a first predetermined threshold value N, and for retransmitting these TS packets when the determination is true, or for canceling these TS packets when the determination is false. Also, the TS packet determination unit determines whether a discontinuity of circulation counter values in the TS packets keeps in length equal to or more larger than a second predetermined threshold value T without retransmitting these TS packets, and sends an “off service” signal to a plurality of receiving apparatus when the determination is true.04-02-2009
20090063924HYBRID ARQ RETRANSMISSION WITH REORDERING SCHEME EMPLOYING MULTIPLE REDUNDANCY VERSIONS AND RECEIVER/TRANSMITTER THEREFOR - A hybrid ARQ retransmission method in a communication system, wherein data packets consisting of symbols encoded with a forward error correction (FEC) technique prior to transmission are retransmitted based on an automatic repeat request and subsequently combined with previously received data packets the symbols of said data packets being modulated by a mapping unit employing a predetermined signal constellation. The retransmitted data packets being retransmitted in form of a selected one of a plurality of different redundancy versions. According to the invention the transmitted bits of the modulated symbols are reordered over the retransmissions in accordance with the selected redundancy version.03-05-2009
20080307284METHOD AND APPARATUS FOR INDICATING A TEMPORARY BLOCK FLOW TO WHICH A PIGGYBACKED ACK/NACK FIELD IS ADDRESSED - A method and apparatus for indicating a temporary block flow (TBF) to which a piggybacked acknowledgement/non-acknowledgement (PAN) field is addressed are disclosed. A sequence may be generated from a temporary flow identity (TFI) to which the PAN field is addressed and masked with a PAN check sequence (PCS). A radio block including a PAN field and a masked PCS is transmitted. The PCS may be masked with one of TFIs which is selected in accordance with a rule pre-agreed. A secondary identifier may indicate a TBF to which the PAN field is addressed. A special value may be used to represent all TBFs assigned and a secondary identifier may indicate a TBF to which the PAN field is addressed. A special value on the PAN field may be used for control purposes for indicating an action affecting a group of receiving stations listening to the radio block.12-11-2008
20090138775Method for communicating data in xDSL using data retransmission - A method for transmitting data in an xDSL system is disclosed. In an exemplary embodiment, the method includes defining a data transmission unit (DTU) to be sent in an xDSL data stream, defining a retransmit container as a time slot that corresponds to a sent DTU, maintaining a copy of the sent DTUs and an index of corresponding retransmit containers in retransmission buffer, transmitting the DTUs in the xDSL data stream, determining whether a transmitted DTU should be retransmitted, identifying each corrupted DTU by its corresponding retransmit container, and retransmitting an uncorrupted copy of the DTU as identified by the corresponding retransmit container. The retransmission is deferred until the DTU is at a predefined position in the retransmission buffer.05-28-2009
20080244352APPARATUS AND METHOD FOR TRANSMITTING DATA AND APPARATUS AND METHOD FOR RECEIVING DATA - Provided are an apparatus and method for transmitting data and an apparatus and method for receiving data, in which the transmission of uncompressed data over a wireless network can be performed by retransmitting an erroneous bit or a group of erroneous bits, if any, of each sub-packet including a number of bits or a number of groups of bits having different significance levels. The apparatus for transmitting data includes an error detection module which determines whether each of a plurality of portions of a transmitted packet having different significance levels is erroneous based on a received response packet; a data-packet generation module which generates a retransmission packet including one or more erroneous portions of the transmitted packet according to the results of the determination performed by the error detection module; and a communication module which transmits the retransmission packet through a communication channel.10-02-2008
20120005548HARQ Operating Point Adaptation In Communications - Various embodiments are provided to address some of the current issues in establishing and adapting an HARQ operating point. Some embodiments include determining (01-05-2012
20120011414NETWORK MANAGEMENT SYSTEM, MANAGEMENT APPARATUS, MANAGED APPARATUS, AND NETWORK MANAGEMENT METHOD - A network management system includes a management apparatus and a managed apparatus which is managed by the management apparatus via a network. The managed apparatus transmits trap information provided with a sequence number to the management apparatus and stores the trap information in a first storage unit. The management apparatus stores the received trap information in a second storage unit, and creates information indicating a missing sequence number and a sequence number of a last trap information received from the managed apparatus, and transmits the information to the corresponding managed apparatus. The managed apparatus determines whether trap information is to be retransmitted is present based on the trap information stored in the first storage unit and the information received from the management apparatus, and retransmits the trap information, based on the determination.01-12-2012
20120210186Method and system for data-rate control by randomized bit-puncturing in communication systems - Method and system for data-rate control by randomized bit-puncturing in communication systems. An encoder encodes at least one information bit thereby generating a group of encoded bits or an encoded frame. The encoder may be any type of encoder including a turbo encoder, an LDPC (Low Density Parity Check) encoder, a RS (Reed-Solomon) encoder, or other type of encoder. Any sub-portion of an encoded frame generated by such an encoder can be viewed as being a group of encoded bits. If the encoded frame is sub-divided into multiple groups of bits, each group can under processing in accordance with the means presented herein to effectuate rate matching. Based on a number of bits to be punctured from the group or frame generated by the encoder, a set of pointers and random-generated displacements is used to generate addresses for bits in the group or frame to be transmitted or punctured.08-16-2012
20110107169ACTIVATION OF SEMI-PERSISTENT RESOURCE ALLOCATIONS IN A MOBILE COMMUNICATION NETWORK - The invention relates to a method for allocating radio resources to a mobile terminal for data transmission in a mobile communication system as performed by a mobile terminal and a base station, respectively. Moreover, the invention relates to a mobile terminal and a base station to perform such method, as well as an implementation of the method in software. The invention further provides a mobile communication system in which radio resources are allocated to a mobile terminal for uplink transmission. In order to avoid false activation of a semi-persistent resource allocation the invention defines new conditions under which a mobile terminal activates a semi-persistent resource allocation. Unlike for example in prior-art systems, a mobile terminal only activates a semi-persistent resource allocation, if it can confirm the activation command received from the access network. Preferably, the activation command and its confirmation are resource assignments.05-05-2011
20110107168APPARATUS AND METHOD FOR GENERATING ARQ FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for generating an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. The method includes generating first feedback information of at least one ARQ block, determining whether any ARQ blocks include at least one successfully received ARQ sub-block, when the at least one erroneous ARQ block includes at least one successfully received ARQ sub-block, adding second feedback information of the ARQ sub-blocks to the first feedback information of the ARQ blocks using a field indicating whether the second feedback information is added and a field indicating the erroneous ARQ blocks including the at least one successfully received ARQ sub-block, and sending the first feedback information with the second feedback information added, to the transmitting stage.05-05-2011
20100095183METHOD OF PROCESS CONFIGURATION FOR MULTIPLE HARQ PROCESSES - A method of HARQ process configuration in a mobile communication system, wherein a plurality of HARQ processes are transmitted from a transmitter to a receiver including the step of configuring a plurality of HARQ processes of unrestricted use for data flows having different priorities and the step of pre-configuring at least one reserved HARQ process for specific data flows of high priority. According to another embodiment, instead of a reserved HARQ process, an additional HARQ process is pre-configured.04-15-2010
20100095182Apparatus and method for transmitting/receiving broadcast data in a mobile communication system - A method and apparatus for transmitting a broadcast physical layer packet in a mobile communication system supporting multi-slot transmission and hybrid Automatic Repeat Request (H-ARQ) are provided. The method comprises initially transmitting the broadcast physical layer packet according to a fixed transmission format for at least one first slot interval and retransmitting the broadcast physical layer packet for at least one second slot interval using a variable transmission format different from the transmission format used in the first slot interval.04-15-2010
20100095181ADAPTIVE AND SCALABLE PACKER ERROR CORRECTION APPARATUS AND METHOD - An adaptive and scalable packet error correction apparatus and method in a wireless multicast network is provided. Each retransmission request from a receiver contains a round number and the number of repairs sent in that round. At each receiver, there are two counters for counting the rounds sent out on the network and the number of repairs that have been required. A receiver on the wireless multicast network listens to the ARQ requests sent by other receivers to update the two counters and determines whether its request should be suppressed or be sent out.04-15-2010
20110099447METHOD FOR PROCESSING NDI IN RANDOM ACCESS PROCEDURE AND A METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL USING THE SAME - A method for a user equipment (UE) to receive a downlink signal, the method including receiving a first downlink control channel identified by a temporary cell identifier (Temporary C-RNTI) from a base station, the first downlink control channel including a first downlink assignment signal having a new data indicator (NDI) with a first value; receiving a second downlink control channel identified by a cell identifier (C-RNTI) from the base station, the second downlink control channel including a second downlink assignment signal having the NDI with a second value; and determining if the NDI has been toggled compared to the NDI previously received from the base station. Further, the UE ignores the NDI with the first value received through the first downlink control channel identified by the temporary cell identifier (Temporary C-RNTI). The method also includes receiving the downlink signal based on the determining.04-28-2011
20110099446TRANSMISSION METHOD USING PARITY PACKETS, TRANSMITTER AND REPEATER - Problem: A packet error rate in a receiver needs to be effectively reduced.04-28-2011
20120124444Sleep Clock Error Recovery Scheme - A wireless device includes a functional unit, a wireless transceiver, an antenna and a clock. The wireless transceiver and antenna are coupled to the functional unit. The clock is coupled to the functional unit and the wireless transceiver. The clock is generates a clock signal. The wireless device is coupled wirelessly to a wireless slave device. The functional unit is configured to determine an amount of time since a last keep alive transmission with the slave device has occurred based on the clock. The functional unit determines a number of keep alive transmissions to transmit to the slave device, and appropriate transmission times for the keep alive transmissions relative to a next scheduled keep alive transmission time, based on the determined amount of time since the last keep alive transmission. The functional unit begins successive transmission of the keep alive transmissions to the slave device per the transmission times.05-17-2012
20090132885SYSTEM AND METHOD FOR RETRANSMITTING DATA IN A COMMUNICATION SYSTEM - A system and method for retransmitting an encoding block in a communication system is provided. The method includes determining the number of encoding blocks to be retransmitted, determining whether a number of encoding blocks to be retransmitted is a multiple of the number of streams available for retransmitting the encoding blocks, when the number of encoding blocks to be retransmitted is not a multiple of the number of streams, determining the minimum number of encoding blocks, additionally needed to meet a condition that the number of encoding blocks to be retransmitted is a multiple of the number of streams, and allocating wireless resources of the streams to the encoding blocks to be retransmitted, retransmitting the encoding blocks to a receiver, and at the same time, allocating wireless resources, which are not allocated to the encoding blocks to be retransmitted, among the wireless resources of the streams, to encoding blocks corresponding to the additionally needed number, and repeatedly retransmitting the encoding blocks to the receiver.05-21-2009
20120131406METHOD AND APPARATUS FOR TIME EFFICIENT RETRANSMISSION USING SYMBOL ACCUMULATION - A method for communicating data is provided. In the method, an encoder receives an input bit stream. The encoder generates, based on the input bit stream, a first output bit stream based on at least a first polynomial and a second output bit stream based on at least a second polynomial. The first and second polynomials are each different from each other. The encoder forms a first packet of code symbols, having a first code rate, based on bits from the first output bit stream. A transmitter transmits the first packet. A receiver receives a first negative acknowledgment indicating unsuccessful decoding of the first packet after said transmitting of the first packet. The encoder punctures bits from the second output bit stream and forms a second packet of code symbols having a second code rate. The second code rate is different from the first code rate. The transmitter transmits the second packet in response to the receiver receiving the first negative acknowledgment.05-24-2012
20120216092REPETITIVE TRANSMISSIONS IN MULTI-CARRIER BASED WIRELESS ACCESS TECHNIQUES - According to one embodiment, a method for repetitive transmission using a plurality of sub-carriers includes: preparing a symbol to be transmitted using the plurality of sub-carriers within a single time domain unit; repeating the symbol a predetermined number (N) of times; applying a corresponding one of N different cyclic shift values to each of the N repeated symbols to be transmitted using the plurality of sub-carriers within the single time domain unit; performing an IFFT (Inverse Fast Fourier Transform) on each of the N repeated symbols to which the corresponding one of the N different cyclic shift values is applied; and transmitting the N repeated symbols on which the IFFT is performed using the plurality of sub-carriers.08-23-2012
20100205501PACKET RETRANSMISSION - Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like.08-12-2010
20100205500METHOD OF TRANSMITTING AND RECEIVING ARQ FEEDBACK INFORMATION - A method of transmitting and receiving Automatic Repeat reQuest (ARQ) feedback information in a wireless communication system is disclosed. The method of transmitting ARQ feedback information in a wireless communication system includes, at a transmitter, transmitting a Protocol Data Unit (PDU) including an extended header including an ARQ feedback Polling Request (APR) field indicating whether or not the transmitter makes a request for ARQ feedback polling, and receiving an Acknowledgement (ACK) from a receiver if the APR field indicates that the transmitter makes the request for ARQ feedback polling to the receiver.08-12-2010
20100205499METHOD AND APPARATUS FOR ACK/NACK REPORTING - A method, node, and system are provided that overcome problems with using inaccurate estimates of a current round trip time RTT for verifying the ACK/NACK information received in an ACK/NACK report, e.g., a piggy-backed ACK/NACK (PAN). This is accomplished by de-coupling the RTT from the ACK/NACK analysis performed in the sending node that receives the ACK/NACK report. As a result, unnecessary re-transmissions are avoided, communication delays are decreased, and s spectrum and other system resources are used more efficiently.08-12-2010
20110185249Spatial Multiplexing Communication System With Enhanced Codeword Mapping With Flexible Rate Selection On Each Spatial Layer And With Single HARQ Process - A method of data transmission includes encoding an information block according to a predetermined retransmission protocol to generate, for a single hybrid automatic repeat request (HARQ) instance, a transport block having information bits and error detection bits and channel coding different parts of said transport block using different modulation and coding schemes to generate one or more codewords for transmission to a receiving station.07-28-2011
20110185248MAJORITY VOTE ERROR CORRECTION - In general, techniques are described for performing majority vote error correction techniques. In operation, a communication device comprising a control unit implements the majority vote error correction techniques. The control unit includes a link management module to request a first retransmission of a first communication received over a wireless communication medium in response to detecting a first uncorrectable error in the first communication, requests a second retransmission of the first communication in response to detecting a second uncorrectable error in a second communication received in response to the first retransmission request and receives a third communication in response to the second retransmission. The control unit also includes a majority vote module to, in response to detecting a third uncorrectable error in the third communication, perform a bit-wise majority vote on corresponding bits of the first, second and third communications to generate an error-corrected communication.07-28-2011
20110185247MASSIVE STRUCTURED DATA TRANSFER OPTIMIZATIONS FOR HIGH-LATENCY, LOW-RELIABILITY NETWORKS - Optimizations for data transmission may be provided. A portion of a data block may be read into a batch by a read thread on a first server. The batch may be passed to a transmission thread. The transmission thread may then transmit the first batch to a second server while the read thread asynchronously reads a second portion of the data block into another batch.07-28-2011
20100199139Wireless communication apparatus, wireless communication control apparatus, wireless communication method, wireless communication program storage medium, wireless communication control method, and wireless communication control program storage medium - A wireless communication apparatus that uses a communication protocol to transmit and receive data with a data check bit, including a received data determining section that performs a data check for received data by using the data check bit to determine whether the data is error; a received result transmitting section that, when determined to be error, discards the data and transmits a retransmission request to other wireless communication apparatus of the transmitting origin, whereas determined to be not error, transmits a message indicating that the data is normal to the other wireless communication apparatus of the transmitting origin; and a retransmission asking section that determines whether a format of the data is incorrect or normal, and when determined to be normal, passes the data to predetermined processing, whereas when determined to be incorrect, discards the data and asks the received result transmitting section to request retransmission of the data.08-05-2010
20100174961Apparatus and method for allocating ACK/NACK channel in wireless communication system - An apparatus is capable of allocating an ACK/NACK channel in a wireless communication system. The apparatus performs a method for allocating the ACK/NACK channel at a base station that includes generating ACK/NACK channel allocation information of a packet transmitted to a terminal; inserting the ACK/NACK channel allocation information into the packet using a padding area indicative of a size difference of data carried by the packet and an Automatic Repeat Request (ARQ) block; and transmitting the packet comprising the inserted ACK/NACK channel allocation information to a terminal to service.07-08-2010
20120173945PARALLEL PACKETIZED INTERCONNECT WITH SIMPLIFIED DATA LINK LAYER - In a first embodiment of the present invention, a method for error-correcting in a parallel interconnect transmitting device is provided, the method comprising: detecting a frame transition in a transmission from the transmitting device to a parallel interconnect receiving device; tracking time between the frame transition and a transition of a response signal corresponding to the frame transition received from the receiving device; detecting an error in the transmission; and restarting a portion of the transmission in response to the error, wherein the size of the portion of the transmission to restart is based upon the tracked time between the frame transition and the transition of a response signal corresponding to the frame transition.07-05-2012
20100050037APPARATUS AND METHOD FOR AUTOMATIC RETRANSMISSION REQUEST (ARQ) FEEDBACK IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for Automatic Repeat reQuest (ARQ) feedback in a wireless communication system are provided. A method for the ARQ feedback at a receiving end includes when receiving an ARQ block from the transmitting end, checking for error in the ARQ block, when the ARQ block has no error, initializing and driving a timer used for determining whether to perform the ARQ feedback according to reception of a next ARQ block, when receiving the next ARQ block without error before the timer expires, initializing and driving the timer, and when the timer expires, performing the ARQ feedback in relation to at least one ARQ block received without error.02-25-2010
20100050035METHOD FOR PREVENTING CONSECUTIVE PACKET ERRORS IN SELECTIVE HYBRID ARQ SYSTEM - Provided is a method for preventing consecutive packet errors in a transmitter by combining a hybrid automatic repeat request (HARQ) type II with a selective automatic repeat request (ARQ), including: transmitting a data packet from the transmitter to a receiver; when a negative acknowledgement (NACK) packet corresponding to the data packet is received from the receiver, checking stored information in the NACK packet wherein the stored information represent whether or not the data packet is stored in a buffer; when the data packet is stored in the buffer, transmitting a packet having parity bits to the receiver and storing the data packet in a retransmission queue; and when the data packet is not stored in the buffer, re-transmitting the data packet and maintaining the data packet stored in a transmission queue.02-25-2010
20100050034SOFT BUTTER MEMORY CONFIGURATION IN A COMMUNICATION SYSTEM - In accordance with an embodiment of the present invention, an apparatus, comprising a processor configured to determine a total number of soft channel bits, a first number associated with hybrid automatic retransmit request processes and a second number associated with hybrid automatic retransmit request processes; and the processor further configured to select a size of a soft buffer memory partition based at least in part on the total number of soft channel bits, the first number associated with hybrid automatic retransmit request processes and the second number associated with hybrid automatic retransmit request processes, is disclosed.02-25-2010
20100050033Method of re-transmitting an original frame - Data bits are mapped to a lower number of slots than the number of slots available for a retransmission frame and control channels are transmitted in all available slots of the retransmission frame. The number of available slots in the retransmission frame is greater than the number of available slots in the original frame.02-25-2010
20100281324METHODS AND SYSTEMS FOR ARQ RESET - Embodiments of the present propose methods and systems for managing previously initiated ARQ resets when it is determined that both the RX and TX initiated independent ARQ reset procedures.11-04-2010
20100275085METHOD AND APPARATUS FOR MAC MESSAGE RELIABILITY - Embodiments of a system and method for wireless communication are provided. In certain embodiments, a plurality of fragments of a MAC management message is transmitted. Each fragment includes a sequence number indicating an order of the fragments, and at least one of the fragments includes a transaction ID identifying the MAC management message with respect to other messages.10-28-2010
20100275084TRANSMISSION DEVICE, RECEIVING CIRCUIT AND CONTROL METHOD OF TRANSMISSION DEVICE - A transmitting circuit transmits data to which an error detection code is attached to a receiving circuit via a transmission path. When detecting the error of the data received via the transmission path, a receiving circuit transmits a retransmit request for the data in which the error is detected to the transmitting circuit. The receiving circuit enters a termination unit adjustment period using the error detection of the received data as a trigger and updates the resistance values of a receiving side termination unit installed at the termination of the transmission path to an appropriate value within the termination unit adjustment period.10-28-2010
20100275082Method and System for Data Transmission in a Data Network - The present invention relates to a method and system for data transmission in a data network. According to the method, a data packet is sent from a sender to a receiver. If a data packet is incorrectly received on the receiver, a repeat request is sent from the receiver to the sender. Upon receiving the repeat request on the sender, the data packet is resent from the sender to the receiver. After having received on the sender a predetermined number of repeat requests requesting the resending of the same data packet, a predetermined quantity of copies of the data packet is sent from the sender to the receiver, wherein the predetermined quantity includes at least two copies, or a predetermined quantity of additional information packets is sent from the sender to the receiver.10-28-2010
20100275083CONTROL DESIGN FOR BACKHAUL RELAY TO SUPPORT MULTIPLE HARQ PROCESSES - A wireless communication network includes a base station and a relay station. The relay station is configured to relay communications between the base station and at least one subscriber station. The base station is configured to communicate with the subscriber station via the relay station. The base station further is configured to transmit, in a subframe, a plurality of transport blocks for a plurality of Hybrid Automatic Repeat Request (HARQ) processes to the relay station. Each transport block corresponds to a different HARQ process.10-28-2010
20100275081HARQ FEEDBACK CHANNEL INDEXING SCHEME IN WIRELESS COMMUNICATION SYSTEMS - An enhanced semi-explicit solution for HARQ feedback channel indexing in wireless communication systems is disclosed. The HARQ feedback channel indexing method may be applied to the HARQ feedback channel transmitted in the downlink, as well as the HARQ feedback channel transmitted in the uplink.10-28-2010
20100023832DATA ACKNOWLEDGEMENT - A method for generating acknowledgement messages in a data transmission system having a receiver for receiving datagrams and being capable of determining which of a series of datagrams have been incorrectly received, the method comprising generating a plurality of a data units, each data unit comprising: a status bit indicative of the status of the data unit; and a plurality of spacing bits together forming a binary representation of a number at least partially indicative of the spacing between one incorrectly received datagram and a succeeding incorrectly received datagram. Apparatus for carrying out various aspects of the methods are also provided.01-28-2010
20100023829METHOD AND APPARATUS FOR SELECTIVE ACKNOWLEDGEMENT - The present invention pertains to the field of data communications and is directed to providing ways and means for flexible receipt reporting. A transceiving unit (01-28-2010
20100011272VARIABLE RATE CODING FOR ENABLING HIGH PERFORMANCE COMMUNICATION - A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied at the receiver. Using this scheme, segments containing erroneous data may be present.01-14-2010
20100011271DEVICE AND METHOD OF DATA COMBINING - A device and method of combining a first version of an information block and a second version of the information block is disclosed. The method comprises calculating, prior to combining the first and second versions of the information block, a scaling factor to be applied in combining the first and second versions of the information block to produce a scaled combined information block.01-14-2010
20100011269SYSTEMS AND METHODS FOR UPLINK INTER-CELL INTERFERENCE CANCELLATION USING HYBRID AUTOMATIC REPEAT REQUEST (HARQ) RETRANSMISSIONS - Systems, methods, apparatus, devices and computer program products enhance uplink inter-cell interference cancellation with HARQ retransmissions. The decoding of a data packet depends on whether the interfering packet was decoded. Since the interfering packet is itself transmitted using a HARQ process, the transmission by the victim UT can be accomplished to take this situation into account. The latency of the victim UT can be varied based on the need for energy efficient transmission. In accordance with one specific aspect, if the receiver can decode multiple packets simultaneously, high data rates can be achieved using packet pipelining.01-14-2010
20120254682METHOD AND ARRANGEMENT FOR HARQ IN WIRELESS MULTI-CARRIER SYSTEMS - A communication method in a receiving node in a wireless communication system includes receiving, at a receiving node, a first coded message block that includes a plurality of parts distributed over a plurality of components. The method further includes detecting a decoding error associated with decoding the received first coded message block and, in response to detecting the decoding error, identifying a part of the first coded message block for which retransmission will be requested and a suggested retransmission setting. The suggested retransmission setting includes one or more of a component selection setting, a link adaptation setting, a power control setting, and a scheduling setting. The method also includes feeding back to the sending node feedback information indicating that the first coded message block could not be correctly decoded. The feedback information indicates the identified part of the first coded message block and the suggested retransmission settings.10-04-2012
20120084616BLOCK ACKNOWLEDGEMENT WITH RETRANSMISSION POLICY DIFFERENTIATION - One feature provides a Block Acknowledgement Retransmission Policy (BARP) frame that permits a transmitter to define a retransmission policy on a per-frame basis for frames transmitted in a block of frames. A block acknowledgement retransmission policy (BARP) frame is generated by a transmitter that individually identifies a retransmission policy for each frame in a block of frames. The BARP frame is then transmitted to a receiver, allowing the receiver to know which frames within a block of frames will be retransmitted and which frames will not be retransmitted.04-05-2012
20080301515Method and a Transmitter/Receiver for Reduced Signaling in a Retransmission System Using Hybrid Automatic Repeat - The present invention relates to a transmitter and a receiver for a mobile communication system. The basic idea of the present invention is to target the number of HARQ transmissions that is required to be able to decode the transmitted data successfully and to only transmit HARQ feedback information if the decoding result differs from an expected result, wherein the expected result is based on the targeted number of required HARQ transmissions.12-04-2008
20080301516METHOD AND DEVICE FOR RETRANSMITTING DATA - A method and device for retransmitting data is provided. A receiving end receives a data unit, and checks whether a Negative Acknowledgement NACK->Acknowledgement, ACK, error occurs. If the NACK->ACK error occurs, the receiving end transmits an Automatic Repeat Request ARQ request message to a transmitting end, for requesting the transmitting end to perform an ARQ retransmission. Therefore, by adopting the technical solutions of the embodiment of the invention, Hybrid Automatic Repeat Request HARQ NACK->ACK errors are avoided from being missed, the complexity of ARQ operation is lowered, and the ARQ retransmission feedback time is reduced.12-04-2008
20110004798Cooperation Communication Method and System Using Feedback Signal - Disclosed are a cooperation communication method and system using feedback signals. The cooperation communication method includes transmitting a packet to a base station by a terminal, determining, by the terminal, whether decoding of the transmitted packet is successfully performed using a feedback signal from the base station, and re-transmitting the packet to the base station by the terminal according to whether decoding of a packet of an adjacent terminal within a prescribed distance from the terminal is successfully performed.01-06-2011
20110004797METHODS AND ARRANGEMENTS IN A WIRELESS COMMUNICATIONS SYSTEM - The present invention relates to methods and arrangements that enable continuous adaptive control of the number of autonomous HARQ retransmissions. This is achieved by a solution, where the UE and the radio base station are using a number of autonomous HARQ retransmissions that can be adjusted based on observations in the UE and/or the radio base station. What is observed is the amount of HARQ retransmissions needed for the radio base station to correctly decode the latest received data packet(s).01-06-2011
20110004796ACKNOWLEDGMENT CHANNEL DESIGN FOR WIRELESS ACCESS NETWORKS - Embodiments of the present invention provide an acknowledgment channel design in which an acknowledgment sequence is scrambled with a station-specific scrambling sequence. Other embodiments may be described and claimed.01-06-2011
20120239998APPARATUS AND METHOD FOR DETERMINING NUMBER OF RETRANSMISSIONS IN A WIRELESS SYSTEM - An apparatus and method of configuring a number of retransmissions for an automatic repeat request (ARQ) scheme (e.g., hybrid ARQ) includes configuring one or more first maximum retransmission numbers based on respective one or more first predetermined values and independent of a second maximum retransmission number. The first maximum retransmission numbers may indicate a maximum number of retransmissions related to respective service flows operational with the base station. The second maximum retransmission number may indicate a maximum number of retransmissions related to control messages transmitted in the wireless network, and may be configured based on a second predetermined value. The configuration of the first maximum retransmission numbers may include the maximum retransmissions numbers associated with a specific user in communication with the base station. Further, at least one of the first maximum retransmission numbers of a particular user may be reconfigured to a third predetermined value.09-20-2012
20120266038DATA TRANSMISSION METHOD AND NETWORK SIDE DEVICE - The present invention provides a data transmission method and a network side device. The method includes: establishing a mapping relation between a first identifier of data required to be sent in a first retransmission request process and a second identifier of the data in a second retransmission request process,; and sending the data, where in the second retransmission request process updates, according to the mapping relation and a sending status of the data, sending status information of the data in the first retransmission request process, so that in the first retransmission request process, whether to retransmit the data is determined according to the sending status information of the data.10-18-2012
20120272115BULK DATA TRANSFER - This disclosure relates to network data communication. Some embodiments include initiating a network connection between an original source and an ultimate destination, transmitting a block of data from the original source to the ultimate destination on the network, requesting retransmission of lost blocks from the ultimate destination to the source and retransmitting the lost blocks from source to the ultimate destination. These embodiments further include measuring round-trip time of a retransmit request, the round-trip time measured from a time of transmission of a retransmit request from the ultimate destination to a time of reception at the ultimate destination after retransmission from the original source and setting the round-trip time as a minimum retransmission request time for the network connection, wherein the round-trip time includes latencies of the network connection and in data processes at the original source and at the ultimate destination.10-25-2012
20120272113ERROR DETECTION AND CORRECTION IN TRANSMITTED DIGITAL SIGNALS - A wireless communications receiver for receiving data blocks, the receiver comprising: a reception unit arranged to receive a wireless signal, to recover from the wireless signal a data frame containing packets; and an LDPC decoder arranged to recover a data block by LDPC decoding one of the packets. A wireless communications receiver for receiving data blocks, the receiver comprising: a reception unit arranged to receive a wireless signal, to recover a data frame from the wireless signal and to recover an encoded block from the data frame; and an LDPC decoder arranged to recover a data block by LDPC decoding the encoded block. A wireless communications transmitter for transmitting data blocks, the transmitter comprising: an encoder arranged to create an encoded block by LDPC encoding a data block; and a transmit unit arranged to load the encoded block into a data frame as a, or as part of a, packet and transmit the data frame wirelessly.10-25-2012
20110239072METHOD AND APPARATUS FOR SEMI-PERSISTENT SCHEDULING ACTIVATION DETECTION - A method for activating a semi-persistent scheduled (SPS) resource using a user agent (UA) is presented. A downlink (DL) communication may be received by a UA using a physical downlink control channel (PDCCH). The DL communication may include a control message. When the control message is associated with an SPS Cell-Radio Network Terminal Identifier (C-RNTI) of the UA, the method may include retrieving a value of a New Data Indicator (NDI) field. When the value of the NDI field is equal to 0, the method may include inspecting the control message to determine whether the control message indicates an SPS activation. When the control message indicates an SPS activation, the method may include activating an SPS resource identified by the control message.09-29-2011
20120089881METHOD, APPARATUS AND SYSTEM FOR TRANSMITTING DATA ON DIGITAL SUBSCRIBER LINE - A method includes the following steps: sorting service data into retransmissive service data and non-retransmissive service data; allocating resources to the retransmissive service data and the non-retransmissive service data respectively, and encapsulating the data into DTUs according to the allocated resources; sending, by a sender, the DTU that bears the service data; receiving, by the sender, a retransmission request that is sent according to a result of judging a bit error and a type of the retransmissive service, where the retransmission request carries information about the DTU that needs to be retransmitted; and retransmitting, by the sender, a corresponding DTU that bears the retransmissive service data requested for retransmission.04-12-2012
20120089880TERMINAL APPARATUS AND RETRANSMISSION CONTROL METHOD - A terminal apparatus and retransmission control method which can reduce the overhead of the uplink control channel in cases when ARQ is applied in communication that uses an uplink unit band and a plurality of downlink unit bands associated with the uplink unit band. Here, a first condition is set in which downlink assignment control information is transmitted from a base station by a unit band group which comprises a basic unit band, which is the downlink unit band on which a broadcast channel signal including information relating to the uplink unit band is transmitted, and a second downlink unit band other than the basic unit band. A bundling unit (04-12-2012
20110276851DATA TRANSMISSION WITH MULTI-LEVEL ACK/NACK FEEDBACK - Techniques for transmitting and receiving data with multi-level feedback of acknowledgement (ACK) and negative acknowledgement (NACK) are described. In an aspect, a receiver may send a NACK if high peak-to-average-power ratio (PAPR) is detected for a transmission of a packet. A transmitter may adjust at least one transmission parameter (e.g., increase back-off of a power amplifier) in response to receiving the NACK from the receiver. In another aspect, a receiver may send a NACK of a first type (NACK Type 1) if high PAPR is detected for a transmission of a packet and may send a NACK of a second type (NACK Type 2) if the packet is decoded in error. A transmitter may treat NACK Type 1 and NACK Type 2 in similar manner and may send another transmission of the packet.11-10-2011
20120331366Method and System for Retransmitting Data Packets in a Space-Time Coded Radio Communication System - A method and system are provided for minimizing errors by retransmitting packets in a multiple-input-multiple-output (MIMO) space-time coded packet radio. A packet is transmitted using a first STC code mapping, the mapping including well-known symbol operations, and optional signal weighting. When transmission errors are detected the packet is re-transmitted using STC code mappings selected in turn from a deterministic sequence of STC code mappings. The STC code mappings are chosen in accordance with one or more principles.12-27-2012
20120331365RADIO DEVICE AND RADIO COMMUNICATION CONTROL METHOD - A radio device includes a radio section which transmits a digital signal through a digital communication path, and a baseband processing section which performs a baseband processing on the digital signal received from the radio section, wherein the baseband processing section performs error detection of the digital signal before performing the baseband processing, and wherein, when an error is detected in the digital signal, the baseband processing section performs the baseband processing without waiting for reception of a retransmitted signal from the radio section.12-27-2012
20110296268METHOD FOR END-TO-END HYBRID AUTOMATIC REPEAT REQUEST AND SYSTEM THEREOF - A method for an end-to-end hybrid automatic repeat request and a system thereof are provided. The method is applicable in a cognitive radio network (CRN) including at least a source node and a destination node. There are paths between a source node and a destination node in the CRN, and each path has a plurality of wireless links. The method includes the following steps. The source node encodes information into a coded packet, divides the coded packet into coded sub-packets, and transmits the coded sub-packets to the paths. Through the wireless links of each path, a coded sub-packet is amplified and forwarded to the destination node. In addition, the destination node combines the coded sub-packets for decoding so as to recover the information, and transmits an acknowledgement packet to the source node for notifying whether the information is successfully recovered.12-01-2011
20110320901DATA TRANSFER DEVICE AND CONTROL METHOD OF DATA TRANSFER DEVICE - A data transfer device includes a data transmitting circuit includes an error detection code generating unit generating an error detection code for detecting an error in the data, and a transmission unit transmitting the data and the error detection code together with retransmit enable information representing that corresponding data transmitted before the former data or transmitted next can be retransmitted, the data receiving circuit includes a reception unit receiving the transmitted data, the transmitted error detection code and the transmitted retransmit enable information, an error detection unit detecting the error in the received data based on the error detection code, an error data retaining unit retaining the data in which an error is detected when the reception unit receives the retransmit enable information, and an error data comparing unit that comparing the error detected data retained in the error data retaining unit with corresponding data that is retransmitted.12-29-2011
20110320900APPARATUS AND METHOD FOR ERROR CHECK OF TRANSMISSION DATA - An error check apparatus including, a packet protocol error check processing circuit configure to detect a protocol error of a packet, a retry control circuit configured to receive the protocol error of the packet from the packet protocol error check processing circuit, and to perform request for retry for data of the packet if the received protocol error has not been detected from a packet retransmitted by retry request, and an error notification circuit configured to notify of the protocol error of the packet to a processing unit in a higher-level layer if the protocol error is not a first protocol error for the packet.12-29-2011
20110320899COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, RADIO BASE STATION, AND COMMUNICATION METHOD - A radio terminal generates a plurality of to-be-transmitted packets comprised of a code block and redundant bits for error detection, extracts transmission unit packets at the time of corresponding transmission from said plurality of to-be-transmitted packets, and links the transmission unit packets to generate and transmit a transmission packet. A radio base station measures and transmits, based on the redundant bits contained in each transmission unit packet, communication quality based on the redundant bits for each code block contained in each transmission unit packet. The radio terminal sets the transmission unit at the time of retransmission for each of the plurality of to-be-transmitted packets to a ratio according to the extent of degradation of communication quality for each code block, extracts the transmission unit packets at the time of the corresponding retransmission from the plurality of to-be-transmitted packets, and links the transmission unit packets to generate and retransmit the transmission packet.12-29-2011
20130013971Incremental Redundancy With Resegmentation - Different transmissions based on different content blocks which were segmented from the same digital content according to different segmentation schemes, where each of the content blocks has any substring in common with at least one of the other content blocks, are received by a receiving radio communication station, for example a mobile telephone or a mobile network base station. Certain encoded received bits derived from different ones of the transmissions are combined into combined bits. Other encoded received bits derived from one or more of the different transmissions are provided together with the combined bits to a decoder.01-10-2013
20130013970Hierarchy Management Method and System for HARQ Memory - The invention provides a method for hierarchy management for a HARQ memory, wherein, the HARQ memory includes an on-chip memory including one or more storage blocks, each of which corresponds to a using status bit for indicating whether the storage block is overlayable. The method includes the following steps of: when receiving new data of a coded block, searching the on-chip memory for any overlayable storage block, and if there exists an overlayable storage block, storing the new data into the storage block and setting the using status bit corresponding to the storage block to be un-overlayable; if there is no overlayable storage block, storing the new data into an off-chip memory; and when the new data are checked and pass the check, setting the using status bit corresponding to the storage block in which the new data are stored to be overlayable. The invention also provides a corresponding system.01-10-2013
20100153805ERROR DETECTION IN PHYSICAL INTERFACES FOR POINT-TO-POINT COMMUNICATIONS BETWEEN INTEGRATED CIRCUITS - An apparatus, system and method for detecting errors in a physical interface during the transmission and/or receipt of data communications between integrated circuits (“ICs”) are disclosed. In one embodiment, an apparatus for generating error-detection codes in a physical interface for the transmission of data communications between integrated circuits (“ICs”) includes an N bit-to-N+2 (“N bit/N+2”) bit physical layer (“PHY”) encoder configured to insert a physical interface error detection bit with N application data bits to form N+1 unencoded data bits, and encode said N+1 unencoded data bits to yield N+2 encoded data bits. The apparatus further includes an error-detection code generator configured to generate a number of bits constituting an error-detection code that includes said physical interface error detection bit, wherein N represents any integer number of data bits.06-17-2010
20120151292Supporting Distributed Key-Based Processes - Supporting distributed key-based processes is described. In an embodiment, servers at a data center provide a key-based process for carrying out computationally expensive tasks and are connected using point to point connections in a geometric topology such as a torus. In an example, aggregation trees are built on top of the geometric topology of the data center, each aggregation tree being a sequence of servers in the data center that forms a tree structure. In an embodiment packets of data are sent from the leaves of the trees to the root and at each server along the tree the packets are aggregated using a combiner function of the key-based process. In an embodiment, if a server fails, the trees are dynamically recomputed and a recovery phase is triggered to resend any packets lost at the failed server. In some embodiments, packets are scheduled by inspecting the content of the packets.06-14-2012
20110246846METHOD AND APPARATUS FOR PROVIDING A DATA RETRANSMISSION SCHEME - An approach is provided for efficient retransmissions by allocating a transmission resource for transmitting data and allocating a retransmission resource for retransmitting the data according to a transmission scheme that specifies relationship between the transmitted data and the retransmitted data for providing communication over a radio network.10-06-2011
20110264976ENHANCED WIRELESS COMMUNICATION WITH HARQ - A wireless communication system including a receiver and a transmitter. The receiver receives a frame of data, and sends an acknowledgement. The acknowledgement includes a positive acknowledgement (ACK) if the data is successfully decoded or a negative acknowledgement (NAK) if the data is unsuccessfully decoded. The acknowledgement is sent according to timing of an acknowledge mask. The transmitter is wirelessly coupled to the receiver, and receives the acknowledgement according to the acknowledge mask, and sends a response to the receiver according to the acknowledgement. The response includes, if an ACK is received before transmission completes of the frame, the transmitter terminates transmission of the frame; if a NAK is received before transmission completes of the frame, the transmitter continues to send the frame; and if an ACK is not received before a predefined frame early scheduling point, the transmitter retransmits the frame after transmission completes of the frame.10-27-2011
20080222477Communication system using communication network and communication method - A communication system for guaranteeing only one each of two processing operations, correlated with each other and executed on different devices. A server has a unit which, on receipt of a first processing request, with identification information, executes this processing only once for one item of the identification, and a unit for transmitting a first processing completion notice to the transmission source of the processing request on completion of the first processing or on re-receipt of the processing request for the first processing with the same identification of the completed first processing. The client has a server, a unit for transmitting the processing request for first processing with identification information, a unit for executing a second processing, previously correlated with the first processing, on receipt of the completion notice, and a unit for re-transmitting a processing request on detection of an error before receipt of a transmitted completion notice.09-11-2008
20130179747METHOD AND APPARATUS FOR DATA RECEPTION ERROR RECOVERY IN MOBILE TERMINAL - A method and an apparatus for data reception error recovery in a mobile terminal are provided. When a mobile terminal detects an error in data received from a memory card, the method and the apparatus enable the mobile terminal to re-receive the data from the memory card for error recovery. The data reception error recovery method, for a mobile terminal connected with a memory card, includes sending a data request command to the memory card, determining whether data corresponding to the data request command is received from the memory card, and sending, when corresponding data is not received from the memory card, a state transition command, which forces the memory card to transition to a transfer state so that the memory card is able to send data to the mobile terminal, to the memory card.07-11-2013
20130179746TRANSMITTING/RECEIVING SYSTEM, METHOD, AND COMPUTER READABLE MEDIUM - A transmitting/receiving system includes a first transmitting/receiving apparatus which includes a first transmitting unit and a first receiving unit, and a second transmitting/receiving apparatus which includes a second receiving unit, a detector, a second generator, and a second transmitting unit. The first transmitting unit transmits data with an error detecting code after a bit-number conversion. The first receiving unit receives a response to the data after a bit-number inverse conversion. The second receiving unit subjects the data to a bit-number inverse conversion. The detector detects an error from the error detecting code. The second generator generates a positive or negative acknowledgement depending on the error detection and uses a code which enables distinguishing between positive and negative acknowledgements when a 1-bit error occurs during transportation. The second transmitting unit transmits the acknowledgement after a bit-number conversion to the first transmitting/receiving apparatus.07-11-2013
20130139018COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS - In a network in which a plurality of ECUs are connected to one another with a common bus, one or more slots are allocated to each ECU in advance, and the plurality of ECUs cyclically transmit messages in an order prescribed in relation to the slots. When each ECU transmits the message related to one slot, each ECU creates and transmits a message including data to be transmitted to other ECUs, and information representing respectively a success/failure of the message reception related to other slots. Each ECU checks information of ACK field included in a message received during one cycle from message transmission related to one slot to a next message transmission related to said one slot. When the message related to one slot is not accurately received by the other ECUs, retransmits the message in the next transmission related to said one slot.05-30-2013
20130103999High Performance Virtual Converged Enhanced Ethernet With Persistent State Flow Control - Maintaining bandwidth in links betweens servers and storage arrays comprising a device. The device establishes the links. The device identifies a first link from the links. The first link has a high response time. The device transmits a plurality of data packets on the first link. Each data packet is associated with a corresponding acknowledgment (ACK). The transmission is performed without waiting for the corresponding ACK to be received. The device tracks the ACK received in response to each of the transmitted data packets. The device detects a failure of the first link. In response to the detection, the device identifies invalid data packets. The invalid data packets comprise data packets transmitted on the first link after the detected failure.04-25-2013
20130124937METHOD AND APPARATUS FOR TRANSMITTING DATA IN DEVICE-TO-DEVICE SERVICE SYSTEM - A method for transmitting data in a second device that performs a Device-to-Device (D2D) service is provided. The method includes determining cooperative communication, if a value indicating a channel condition between a first device and a third device is less than or equal to a predetermined threshold, overhearing data transmitted from the first device to the third device and overhearing a response signal transmitted from the third device to the first device, to identify a transmission-failed data block of the first device, and if there are data transmission resources left at a predetermined scheduled data transmission time, transmitting the transmission-failed data block of the first device to the third device by piggybacking the transmission-failed data block on transmission data of the second device.05-16-2013
20100281323CONTROL AND DATA CHANNELS FOR ADVANCED RELAY OPERATION - A relay station in a wireless communication system is configured to relay communications between the base station and a plurality of subscriber stations. The relay station includes at least one antenna configured to transmit and receive data and control information. The relay station also includes a controller coupled to the antenna. The controller is configured to transmit control information to a subscriber station during a first set of symbols in a relay station to subscriber station (RS-to-SS) subframe. The controller also switches the antenna to a receive mode; and receives control information during a second set of symbols in the RS-to-SS subframe.11-04-2010
20110214030Wireless Synchronized Movement Monitoring Apparatus and System - Disclosed embodiments include a movement monitoring apparatus comprising a wireless synchronization scheme. Depending on the particular embodiment such wireless synchronization scheme is a master synchronization scheme or a mesh synchronization scheme. Additionally, in a particular embodiment, the movement monitor further comprises a robust wireless data transfer data controller. The disclosure includes a description of the complete system, namely, the wireless synchronized movement monitors with robust data transfer capabilities, the docking station, the access point, and the computer-implemented analysis system.09-01-2011
20110231725METHOD AND SYSTEM FOR HARQ COMBINING IN A TELECOMMUNICATION SYSTEM - A receiver and method for HARQ combining of a received codeword in a receiver with a FEC decoder, the method including computing Log Likelihood Ratios (LLRs) of demodulated soft symbols of the received codeword and outputting the LLRs as a-priori soft bits; performing iterative decoding of the a-priori soft bits in a Forward Error Correction (FEC) decoder; outputting a posteriori soft bits of the a priori soft bits of the received codeword from the FEC decoder; and HARQ combining the a posteriori soft bits with a retransmission of the received codeword.09-22-2011
20110239074ENCODING UPLINK ACKNOWLEDGMENTS TO DOWNLINK TRANSMISSIONS - A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a plurality of data blocks, such that each of the data blocks include an associated cyclic redundancy check (CRC), and a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks. The portable device further includes a transmitter for transmitting a response sequence which indicates the received status of all of the data blocks.09-29-2011
20130151920METHOD AND APPARATUS FOR DECODING - Aspects of the disclosure can provide a method and an apparatus to decode a data stream based on multiple transmissions with efficient usages of storage and power resources. The method can include receiving a first plurality of encoded code blocks corresponding to a first transmission of a transport block, decoding the first plurality of encoded code blocks into decoded code blocks, error detecting the decoded code blocks, and storing a decoding history of the decoded code blocks. Further, the method can include receiving a second plurality of encoded code blocks corresponding to a retransmission of the transport block. The second plurality of encoded code blocks can map the first plurality of encoded code blocks, respectively. The method can selectively decode a subset of the second plurality of encoded code blocks based on the decoding history. In addition, the method can include storing soft bits for code blocks that failed decoding.06-13-2013
20110289374ANALYZER - An analyzer may include a body housing having a first ID, a first measurement module having a second ID that is different from the first ID, the first measurement module being releasably attachable to the body housing, a first memory in the body housing, the first memory being configured to store the first ID, first setting data and first correction data, a second memory in the first measurement module, the second memory being configured to store the second ID, second setting data and second correction data, a first CPU in the body housing, the first CPU being configured to detect the first measurement module having the second ID, and a first data transmission unit in the body housing, the first data transmission unit being configured to transmit the first setting data and the first correction data to the second memory.11-24-2011
20110314349DATA TRANSMITTING AND RECEIVING SYSTEM - A system having a transmission unit transmitting an output data signal formed from output data and related error detection code and a corresponding receiving unit. The output data signal is pre-emphasized by a pre-emphasis driver in the transmission unit. The receiving unit includes an equalizer equalizing the received output data signal and an error detector analyzing the error detection code to determine whether a bit error is present in the received data. Upon successive data transmission failures either an equalization coefficient in the equalizer or a pre-emphasis coefficient in the pre-emphasis driver are changed.12-22-2011
20120005550COMMUNICATION METHOD, COMMUNICATION SYSTEM, COMMUNICATION TERMINAL APPARATUS AND COMMUNICATION BASE STATION APPARATUS - When transmitting retransmission data, MCS information of a control channel for when communicating the new data is replaced with retransmission control information and the control channel is transmitted. When receiving retransmission data, the control channel is received to obtain the retransmission control information, the replaced MCS information is estimated from the control channel received at the time of communication of new data, and a reception process of retransmission data is controlled using the estimated MCS information and the retransmission control information.01-05-2012
20120005549TRANSFER APPARATUS, TRANSFER PROGRAM, AND TRANSFER METHOD - A transfer apparatus includes: a receiver to receive one of an error correction packet and a data packet, the error correction packet for recovering the data packet through error correction, and the data packet having protective coverage information written thereon, the protective coverage information identifying a protective coverage on the data packet recoverable through an error correction of the error correction packet; an updater to update the protective coverage information in accordance with an order of reception of the data packets received by the receiver unit; a generator to generate an error correction packet of the data packet identified by new protective coverage information updated by the updater unit; and a transmitter to transmit the data packet having the protective coverage information updated by the updater unit, and the error correction packet generated by the generator unit.01-05-2012
20120030534PHYSICAL UPLINK SHARED CHANNEL ENCODER FOR USER EQUIPMENT MODEM AND ENCODING METHOD OF THE SAME - Provided are a Physical Uplink Shared CHannel (PUSCH) encoder and an encoding method of the same. The PUSCH encoder includes a plurality of encoding units and a channel interleaving unit interleaving the data transferred from the plurality of encoding units. Herein, the respective encoding units perform encoding operations on different data. The PUSCH encoder is configured to perform the respective encoding operations in parallel. In accordance with the PUSCH encoder and the encoding method thereof, the encoding operations are performed on different data in parallel to reduce latency, leading to an increase in processing speed of a codec system. Furthermore, the increase in processing speed of the codec system results in the improvement of performance and throughput per unit hour in a data communication system.02-02-2012
20120297265Internet Protocol Multicast with Internet Protocol Unicast/Multicast Error Correction - A method of delivering digital information includes joining a multicast group, and receiving a segment from a server directed to the multicast group. Further, the method further includes determining a transmission error has occurred resulting in an incomplete segment, and sending an error notification to the server requesting retransmission of at least a portion of the incomplete segment. Additionally, the method includes receiving a retransmission of the at least a portion of the incomplete segment. The at least a portion of the incomplete segment may be received through an IP unicast connection or as a multicast retransmission.11-22-2012
20130212446PACKET RETRANSMISSION METHOD IN A WIRELESS TRANSMITTER - The present invention concerns a wireless device and a method at a wireless device for transmitting a packet, said method comprising the steps of setting a lifetime value to a packet to transmit and, while the packet lifetime has not expired and the packet transmission fails: retransmitting the packet up to a retry limit, and suspending transmitting said packet during a pause time before transmitting the packet up to a retry limit.08-15-2013

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