| Patent application number | Description | Published |
|---|
| 20080212514 | COLLISION-FREE GROUP HOPPING IN A WIRELESS COMMUNICATION SYSTEM - Techniques for supporting data transmission with little or no control overhead are described. In an aspect, data may be sent based on a hybrid scheme that utilizes a combination of group hopping for transmissions of new packets and static grouping for retransmissions of pending packets. For the hybrid scheme, a user equipment (UE) may be assigned different resource blocks in different transmission intervals based on a hopping pattern. The first transmission of new packets may be sent on resource blocks determined based on the hopping pattern. Retransmissions of each packet, if any, may be sent on the resource block used for the first transmission of the packet. The UE may perform blind decoding to recover packets sent to the UE. In another aspect, semi-static group assignment may be used, and the UE may be assigned a group of resource blocks that may change periodically or based on trigger events. | 09-04-2008 |
| 20080212520 | METHOD AND APPARATUS FOR FREQUENCY HOPPING WITH FREQUENCY FRACTION REUSE - A method and apparatus for a wireless communication system, for frequency hopping using frequency fraction reuse scheme. The frequency hopping pattern is generated by dividing a portion of frequency into plurality of sub-bands, dividing a portion of time into plurality of sectors, each sector comprising the divided sub-bands, designating one of the divided sub-band within one of the sectors as the restricted sub-band, and allocating a location the designated sub-band as a restricted sub-band. | 09-04-2008 |
| 20080214198 | FLEXIBLE CHANNEL QUALITY INDICATOR REPORTING - System(s) and method(s) are provided that facilitate a flexible channel quality indicator (CQI) reporting directives or policies. A CQI reporting directive delivers an improved tradeoff between reporting accuracy and overhead by establishing subband-specific reporting periods, reporting repetitions, or power requirements. The CQI reporting directive is based at least in part on channel conditions, traffic requirements, and scheduling techniques. Automated optimization and negotiation of a CQI reporting directive based on communication performance is also incorporated. | 09-04-2008 |
| 20090257449 | METHODS OF RELIABLY SENDING CONTROL SIGNAL - Downlink PDCCH is communicated in a manner that mitigates a UE from decoding the PDCCH on multiple aggregation levels. Ambiguous payload sizes are identified and modified through zero padding with one or more bits based on the payload size. Aggregation level scrambling sequences can be generated such that a receiving UE can accurately identify the aggregation level on which to decode the PDCCH. Indicator bits that signal the aggregation level to a UE can also be included in the PDCCH. | 10-15-2009 |
| 20090268685 | ASSIGNMENT OF ACK RESOURCE IN A WIRELESS COMMUNICATION SYSTEM - Techniques for assigning acknowledgement (ACK) resource to a user equipment (UE) in a wireless communication system are described. In one design, a first parameter indicative of radio resources (e.g., the lowest index of at least one physical resource block) allocated to the UE for data transmission may be obtained. A second parameter indicative of another resource (e.g., a cyclic shift of a reference signal sequence) assigned to the UE for data transmission may also be obtained. The first and/or second parameter may be restricted, and each restricted parameter may be limited to a set of allowed values among all available values for the parameter. ACK resource assigned to the UE for data transmission may be determined based on the first and second parameters. In one design, sequential first parameter values may be mapped to sequential ACK resources indices. In another design, mirror mapping with different mapping directions may be used for different allowed values of the second parameter. | 10-29-2009 |
| 20090323957 | SCRAMBLING UNDER AN EXTENDED PHYSICAL-LAYER CELL IDENTITY SPACE - A method for wireless communications is provided. The method includes determining a set of physical layer cell identities and analyzing a current set of scrambling sequences. The method increases the current set of scrambling sequences to account for increases in the physical layer cell identities. | 12-31-2009 |
| 20090325585 | FLEXIBLE SIGNALING OF RESOURCES ON A CONTROL CHANNEL - Systems and methodologies are described that facilitate employing flexible signaling of resource block assignments on a control channel. Resource blocks associated with an uplink or downlink channel can be split into a plurality of groups, and group-specific signaling constraints can be utilized with each of these groups. For example, the group-specific signaling constraints can relate to minimum resource block allocation units, signaling structures (e.g., bitmap structure, contiguous allocation structure, tree-based structure, . . . ), and the like utilized for sending assignment indications that allocate resource blocks within the respective groups. Further, an access terminal can have a common understanding of the group-specific signaling constraints; thus, a received assignment indication can be deciphered by the access terminal by utilizing the group-specific signaling constraints. | 12-31-2009 |
| 20100027502 | Sub-band dependent resource management - A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth. | 02-04-2010 |
| 20100034161 | RNTI-DEPENDENT SCRAMBLING SEQUENCE INITIALIZATION - Systems and methodologies are described that facilitate initializing scrambling sequence generation in a wireless communication environment. Scrambling sequence generation can be initialized (e.g., at a start of each subframe, . . . ) at least in part as a function of a type of Radio Network Temporary Identifier (RNTI). Further, the type of RNTI utilized for initialization of scrambling sequence generation can correspond to a transmission type (e.g., whether the transmission is related to system information, paging, random access response, scheduled transmission or contention resolution message of a random access procedure, SPS traffic, regular unicast traffic, . . . ). Moreover, the scrambling sequence can be leveraged to scramble data for transmission over a data channel (e.g., Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), . . . ). Further, a receiving wireless communication apparatus can utilize a descrambling sequence similarly yielded based upon the type of RNTI corresponding to the transmission type. | 02-11-2010 |
| 20100040009 | METHOD AND APPARATUS FOR UTILIZING UNUSED RESOURCES IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described that facilitate allocating uplink resources in a wireless access terminal. When a downlink transmission is received at a wireless device, the wireless device determines the appropriate control region to reserved based in part on the downlink transmission. Uplink data resources are also dynamically assigned. | 02-18-2010 |
| 20100041428 | METHOD AND APPARATUS FOR POWER CONTROL OF FIRST DATA TRANSMISSION IN RANDOM ACCESS PROCEDURE OF FDMA COMMUNICATION SYSTEM - Transmit power is controlled for a first uplink data transmission on Physical Uplink Shared Channel (PUSCH) during random access channel (RACH) procedure. Power control adjustment for the first PUSCH transmission is performed relative to the power spectral density used for successful PRACH transmission as adjusted for bandwidth difference, etc. The uplink Physical random access channel carries the RACH information that is transmitted by the user equipment (UE) during registrations or base station originated calls. A PRACH is composed of a number of preambles and a message portion. The preambles are a series of radio frequency power “steps” that increase in power according to the power step setting until the maximum number of preambles is reached or the base station acknowledges. Once the UE receives a positive indication, it transmits the message portion of the PRACH which consists of message data and control data with independent power gain control. | 02-18-2010 |
| 20100067470 | PHYSICAL RANDOM ACCESS CHANNEL (PRACH) TRANSMISSION IN MULTICARRIER OPERATION - Systems and methodologies are described that facilitate selecting an uplink carrier for random access within a wireless environment having multiple carriers. Selection of an uplink carrier for random access can be randomly selected from a set of available uplink carriers. Additionally, the uplink carrier for random access can be selected based upon which uplink carrier is paired with an anchor carrier. Further, the uplink carrier for random access can be identified based upon a bandwidth related to the user equipment (UE). Reference signals can also be employed in order to identify an uplink carrier to perform random access. | 03-18-2010 |
| 20100074209 | METHOD AND APPARATUS FOR CONTROLLING UE EMISSION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for controlling the operation of user equipments (UEs) to mitigate emissions out of band are described. A base station may identify a UE potentially causing excessive emissions out of band due to transmission of control information and may schedule the UE to reduce the emissions out of band. In one design, the base station may schedule the UE to send control information on a Physical Uplink Shared Channel (PUSCH) instead of a Physical Uplink Control Channel (PUCCH). In another design, the base station may assign the UE with resources for the PUCCH to send control information. The assigned resources may be selected to mitigate the emissions out of band and may be (i) located within a target frequency range, (ii) located away from a frequency band to be mitigated with the emissions out of band, or (iii) obtained with a reuse scheme and have less inter-cell interference from other UEs. | 03-25-2010 |
| 20100085955 | TRANSMIT DIVERSITY FOR SC-FDMA - Techniques for transmitting data with transmit diversity for single-carrier frequency division multiple access (SC-FDMA) are described. In one design, a transmitter (e.g., a UE) may form a first symbol vector including first and second modulation symbol sequences. The transmitter may also form a second symbol vector including third and fourth modulation symbol sequences, which may be generated based on the second and first modulation symbol sequences, respectively. Each symbol vector may further include a cyclic prefix and possibly a cyclic postfix for each modulation symbol sequence. The transmitter may generate a first SC-FDMA symbol based on the first symbol vector and a second SC-FDMA symbol based on the second symbol vector. The transmitter may transmit the first and second SC-FDMA symbols from two transmit antennas in a single SC-FDMA symbol period to achieve transmit diversity. | 04-08-2010 |
| 20100172313 | SEMI-PERSISTENT SCHEDULING RESOURCE RELEASE WITH DRX COMMAND - Certain aspects of the present disclosure relate to a technique for releasing semi-persistent scheduling resources and for immediate entering an energy saving mode of operation at a user terminal. | 07-08-2010 |
| 20100177653 | METHOD AND APPARATUS FOR COMPUTING AND REPORTING CHANNEL QUALITY INDICATION (CQI) - Techniques for computing and reporting channel quality indication (CQI) are described. In an aspect, a plurality of CQI computation methods may be supported, and each CQI computation method may indicate how CQI should be computed. One CQI computation method may be selected for use. CQI may then be computed and reported in accordance with the selected CQI computation method. In an exemplary design, a user equipment (UE) may obtain a selected method for computing CQI, which may be chosen based on the UE capability and/or other factors. The selected method may specify (i) CQI computation for a specific codeword among a plurality of codewords or (ii) CQI computation by averaging signal quality across a plurality of layers used for transmission. The UE may compute CQI in accordance with the selected method, send the CQI to a base station, and receive data sent by the base station based on the CQI. | 07-15-2010 |
| 20100177700 | METHOD AND APPARATUS FOR ENABLING MULTIPLE TRANSMISSION MODES BASED ON MULTIPLE SEARCH SPACES - Certain aspects of the present disclosure relate to a technique for enabling multiple transmission modes based on control information of different formats. | 07-15-2010 |
| 20100177810 | METHOD AND APPARATUS FOR ENABLING MULTIPLE TRANSMISSION MODES IN A WIRELESS COMMUNICATION SYSTEM - Certain aspects of the present disclosure relate to a technique for enabling multiple transmission modes based on control information of different formats. | 07-15-2010 |
| 20100189032 | FREQUENCY HOPPING IN A WIRELESS COMMUNICATION NETWORK - Techniques for performing frequency hopping in a wireless network are described. In an aspect, frequency hopping may be performed based on both cell identity (ID) and system time information. In one design, a user equipment (UE) may determine a cell ID of a cell and may obtain system time information for the cell. The UE may determine resources to use for transmission with frequency hopping based on the cell ID and the system time information. In one design, the UE may initialize a PN generator in each radio frame with an initial value determined based on the cell ID and a system frame number (SFN) for the radio frame. The UE may determine the resources to use for transmission based on a hopping function, a mirroring function, and a PN sequence from the PN generator. The UE may send a transmission on the resources to the cell. | 07-29-2010 |
| 20100195629 | EFFICIENT ACK TRANSMISSION FOR UPLINK SEMI-PERSISTENT SCHEDULING RELEASE IN LTE - A method, an apparatus, and a computer program product for wireless communication are provided in which an uplink semi-persistent scheduling release is received an HARQ ACK is determined whether to be transmitted in response to the received uplink semi-persistent scheduling release. | 08-05-2010 |
| 20100195759 | UPLINK OPEN-LOOP SPATIAL MULTIPLEXING IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate cycling through precoders for transmitting wireless network communications in a time domain. The precoders can be cycled according to a precoder sequence for each data symbol transmission. When the last precoder is selected the cycle can begin again, a new precoder sequence can be received or defined, and/or the like. A precoder sequence related to a subset of precoders present in a wireless device can be defined sequentially, cyclically shifted according to an identifier or one or more communications parameters, randomly, pseudo-randomly according to an identifier or one or more communications parameters, and/or the like. In addition, the precoder sequence can be utilized to select a precoder for one or more retransmissions. Such cycling of precoders can increase transmit diversity. | 08-05-2010 |
| 20100202559 | MULTIPLEXING AND CODING SCHEMES FOR MULTIPLE TRANSMIT ANTENNAS IN A WIRELESS COMMUNICATION SYSTEM - Techniques for transmitting data from multiple transmit antennas using space orthogonal resource transmit diversity (SORTD) are described. For the SORTD scheme, a different orthogonal resource may be assigned to each transmit antenna. Data may be sent from the multiple transmit antennas using multiple orthogonal resources. In one design, a UE may process at least one information bit (e.g., with joint or independent coding) to obtain first and second sets of at least one modulation symbol. The UE may process the first set of modulation symbol(s) for transmission from the first transmit antenna using a first orthogonal resource. The UE may process the second set of modulation symbol(s) for transmission from the second transmit antenna using a second orthogonal resource. Each orthogonal resource may include a different reference signal sequence or a different set of reference signal sequence and orthogonal sequence. | 08-12-2010 |
| 20100214938 | FLEXIBLE DATA AND CONTROL MULTIPLEXING - Systems and methods are disclosed for control-data multiplexing as well as control-data decoupling. In one embodiment, a semi-static approach is disclosed, wherein the upper layer(s) are configured such that each user equipment uses either control-data multiplexing or control-data decoupling. Additionally or alternatively, a dynamic approach is disclosed, in which one bit is added to the DCI format which indicates whether the UE is using control-data multiplexing or control-data coupling. | 08-26-2010 |
| 20100215007 | CHANNEL INTERLEAVER FOR TRANSMISSION OF MULTIPLE CODE BLOCKS IN A WIRELESS COMMUNICATION SYSTEM - Techniques for performing channel interleaving to achieve similar SINRs for multiple code blocks are described. In one design, a transmitter station (e.g., a base station or a UE) determines a plurality of resource groups assigned for data transmission. Each resource group includes a plurality of resource elements formed by a cluster of subcarriers in a time interval. The transmitter station partitions a transport block into a plurality of code blocks, processes each code block to obtain data symbols for that code block, and maps the data symbols for each code block to at least one resource element in each of the plurality of resource groups. The transmitter station transmits the mapped data symbols for the plurality of code blocks to a receiver station. In one design, the transmitter station receives an ACK or a NACK for the transport block and retransmits all code blocks if a NACK is received. | 08-26-2010 |
| 20100232524 | METHOD AND APPARATUS FOR SYSTEM BANDWIDTH INDICATION - Techniques for conveying system bandwidths in a wireless communication system are described. In an aspect, system bandwidth information may be signaled to first user equipments (UEs) supporting a first set of system bandwidths and second UEs supporting a second set of system bandwidths. In one design, a base station may obtain and broadcast system bandwidth information indicating a first system bandwidth for the first UEs and a second system bandwidth for the second UEs. The first system bandwidth may be selected from the first set, and the second system bandwidth may be selected from the second set, which may be a superset of the first set. The system bandwidth information may include a first part and a second part. The first part may convey the first system bandwidth for the first UEs. The first and second parts may convey the second system bandwidth for the second UEs. | 09-16-2010 |
| 20100238823 | METHOD AND APPARATUS FOR HANDLING INCONSISTENT CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for handling inconsistent control information in a wireless communication system are described. In an aspect, inconsistent control information is handled in different manners for the downlink and uplink. In one design, a user equipment (UE) receives a first grant with first control information for a first data transmission and also receives a second grant with second control information for a second data transmission. The UE determines that the second control information is inconsistent with the first control information, e.g., due to the two grants conveying different transport block sizes. The UE determines whether to retain or discard the second grant based on whether the two grants are for data transmissions on the downlink or uplink. In one design, the UE retains the second grant if the two grants are for data transmissions on the downlink and discards the second grant if the two grants are for data transmissions on the uplink. | 09-23-2010 |
| 20100246721 | METHOD AND APPARATUS FOR EFFICIENT CONTROL DECODING FOR TRANSPARENT RELAYING OPERATION IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate efficient control decoding to facilitate management of cooperative relay operation in a wireless communication environment. As described herein, a relay node (RN) and/or another entity cooperating with a serving network node for respective users in a potentially assisted group can prune a search space of control decoding candidates corresponding to the respective users. For example, respective control decoding candidates corresponding to, e.g., common and/or user-specific search spaces, aggregation levels, control channel sizes, etc., can be eliminated from a reduced control search space based on various criteria. Further, sets of control decoding candidates corresponding to respective users not schedulable at a given time interval can be eliminated. In addition, control search space pruning can be performed in addition to or in place of increased cyclic redundancy check (CRC) protection for control information, thereby further decreasing the probability of false control detection. | 09-30-2010 |
| 20100296389 | FAILURE INDICATION FOR ONE OR MORE CARRIERS IN A MULTI-CARRIER COMMUNICATION ENVIRONMENT - Systems and methodologies are described that facilitate indicating a loss of channel quality on a component carrier of a plurality of component carriers. A UE can monitor configured component carriers to determine channel qualities associated therewith. The UE can transmit carrier quality information that includes the channel qualities of the plurality of component carriers. In addition, the UE can identify a component carrier experiencing a loss of channel quality and notify a base station of the component carrier with poor channel conditions. In one aspect, the UE can incorporate additional information into a scheduling request. In addition, the UE can generate a CQI report that contains the carrier quality information. Further, the base station, when a loss of channel quality occurs, can retry transmission on different carriers. Moreover, the base station can employ information provided by the UE when selecting a component carrier for a transmission. | 11-25-2010 |
| 20100322154 | CONTROL CHANNEL DESIGN FOR DYNAMIC SUB-FRAME SELECTION - Certain aspects of the disclosure relate to providing detailed control channel design for a dynamic selection scheme between normal subframes and special subframes. In one aspect, a method may be provided for generating a subframe that comprises a data region and at least one control region interpretable by a first group of one or more legacy User Equipments (UEs) as a first type and by a second group of non-legacy UEs as a second type, wherein the second group of UEs supports a plurality of features that are a superset of a plurality of features supported by the first group and transmitting the subframe to the first group and the second group of UEs. | 12-23-2010 |
| 20100323745 | METHOD AND APPARATUS FOR MANAGING DOWNLINK TRANSMISSION POWER IN A HETEROGENEOUS NETWORK - A method, an apparatus, and a computer program product for wireless communication are provided in which it is determined that a transmission of a first instance of control information in a first control region in a subframe of a first power class eNodeB a non-modified power spectral density (PSD) will result in interference above a threshold with a transmission of a second instance of control information in a second control region in a subframe of a second power class eNodeB, PSD is modified for a portion of at least one of the first or second control regions of at least one of the subframes for at least one of the first power class or second power class eNodeB, and the first instance of control information is transmitted during the control region using the modified PSD for the portion of the first instance of control information. | 12-23-2010 |
| 20110021191 | CROSS-CARRIER CONTROL FOR LTE-ADVANCED MULTICARRIER SYSTEM - Systems and methodologies are described that facilitates identifying control information for two or more carriers in a multi-carrier system or environment. User equipment (UE) identifications (IDs) can be assigned for a user equipment, wherein each user equipment (UE) identification (ID) can correspond to a specific carrier. Upon receipt of control information related to a plurality of carriers from an anchor carrier, the user equipment (UE) identifications (IDs) can be utilized in order to identify which control information corresponds to each carrier. The user equipment (UE) identification (ID) can be, for example, a Cell Random Network Temporary Identity (C-RNTI). | 01-27-2011 |
| 20110039499 | DYNAMIC SELECTION OF RANDOM ACCESS CHANNEL CONFIGURATIONS - Systems and methodologies are described that facilitate dynamic selection of a random access channel configuration. Typically, a single random access channel configuration is utilized throughout a cell; however, the configuration employed, while appropriate for some mobile devices within the cell, can introduce unnecessary overhead for other mobile devices. A mobile device can measure a characteristic of a radio link between the mobile device and a base station. The measurement can be compared to a set of thresholds provided by the base station. Based upon the comparison, a random access channel configuration can be selected from a set of formats. The selected configuration can be utilized to initiate random access procedures. | 02-17-2011 |
| 20110070845 | MULTIPLE CARRIER INDICATION AND DOWNLINK CONTROL INFORMATION INTERACTION - Methods, systems, apparatus and computer program products are provided to facilitate the configuration and allocation of cross-carrier control information associated with transmissions of a wireless communication system. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 03-24-2011 |
| 20110076962 | CONTROL INFORMATION SIGNALING - Methods, systems, apparatus and computer program products are provided to facilitate the configuration and allocation of control information associated with transmissions of a wireless communication system. In systems that utilize multiple component carriers, cross-carrier signaling may be used to carry the control information associated with one component carrier on a different component carrier. By allowing control information messages to share their allocated search spaces, the number of decoding attempts needed to obtain control information can be kept within desirable limits while improving scheduling and resource allocation flexibility. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 03-31-2011 |
| 20110077038 | SCRAMBLING SEQUENCE INITIALIZATION FOR COORDINATED MULTI-POINT TRANSMISSIONS - Methods, systems, apparatus and computer program products are provided for generating a shared initialization code for physical channel data scrambling in an LTE Advanced coordinated multipoint transmission network. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 03-31-2011 |
| 20110085457 | METHOD AND APPARATUS FOR SUPPORTING USER EQUIPMENTS ON DIFFERENT SYSTEM BANDWIDTHS - Techniques for supporting communication for different user equipments (UEs) on different system bandwidths are described. In one design, a base station transmits first control information to support communication for at least one first UE on a first system bandwidth and transmits second control information to support communication for at least one second UE on a second system bandwidth, which overlaps the first system bandwidth. The base station transmits data to the first and second UEs on the first and second system bandwidths, respectively. In one design, the base station receives third control information from the first UE(s) and fourth control information from the second UE(s) on a third system bandwidth. The base station receives data from the first UE(s) on the third system bandwidth and receives data from the second UE(s) on a fourth system bandwidth, which overlaps the third system bandwidth. | 04-14-2011 |
| 20110085458 | DOWNLINK CONTROL INFORMATION FOR EFFICIENT DECODING - Certain aspects of the present disclosure present techniques for generating a downlink control information (DCI) message which may be transmitted with a particular organization of a downlink control channel and techniques for receiving the same. The DCI message may support uplink enhancements such as single-user multiple input multiple output (SU-MIMO) and clustered DFT-S-OFDM, and may limit blind decoding operations at a user equipment. | 04-14-2011 |
| 20110085513 | UPLINK RESOURCE ALLOCATION FOR LTE ADVANCED - Methods, systems, apparatus and computer program products are provided to receive downlink control information (DCI) in a downlink control channel, where the downlink control information configured to indicate an allocation of uplink resources with a clustered uplink resource allocation protocol or a contiguous uplink resource allocation protocol, to detect which of the clustered uplink resource allocation protocol and the contiguous uplink resource allocation protocol is indicated and to allocate the uplink resources based on the indicated uplink resource allocation protocol. | 04-14-2011 |
| 20110090808 | METHODS AND APPARATUS FOR TRANSPORT BLOCK SIZE DETERMINATION - Methods and apparatus for determining transport block sizes for relaying backhaul subframes from a relay node to a donor base station are described. A transport block size may be adjusted at a relay node by an adjustment factor. The adjustment factor may be based on parameters such as propagation delay between the relay node and donor base station, a multiplexing configuration of control and data information in a relay node subframe, a switching time in a relay node subframe between a downlink and an uplink partition of the subframe, and/or other channel or configuration characteristics. | 04-21-2011 |
| 20110090809 | SYSTEM AND METHOD FOR ALLOCATING RESOURCES IN AN EXTENDED BANDWIDTH WIRELESS NETWORK - A method, an apparatus, and a computer program product for wireless communication are disclosed in which a base station provides an extended bandwidth having an extension portion and a non-extension portion. The base station can indicate for a particular user equipment (UE) to utilize only a portion of the extended bandwidth. In this way, the extended bandwidth can include multiplexed resources directed to a plurality of UEs, improving capacity and/or throughput. Moreover, backwards compatibility with devices compatible with LTE Release 8 can be achieved, as those devices can be directed to utilize only the non-extension portion of the extended bandwidth. In one aspect, the base station indicates a system bandwidth including resource blocks associated with the non-extension portion and resource blocks associated with the extension portion, and the UE is not required to monitor more than a predetermined number of resource blocks to receive a downlink transmission. | 04-21-2011 |
| 20110090854 | DOWNLINK AND UPLINK RESOURCE ELEMENT MAPPING FOR CARRIER EXTENSION - A method, an apparatus, and a computer program product for wireless communication are provided in which resource elements compatible with multiple different communication protocols, which may not be compatible with one another, may be mapped to a radio frame. For example, in an LTE network, equipment configured to be compatible with 3GPP release 8 standards (herein referred to as Rel. 8) may have certain limitations as to what bandwidth is available for use and access, while these limitations may not apply to later releases of LTE standards after Rel. 8 (herein referred to as “New”). Thus, a system bandwidth can be extended to include an extension portion, to which resource elements compatible with the New protocol may be mapped, and a non-extension portion, to which resource elements compatible with either Rel. 8 or the New protocol may be mapped, providing an effective multiplexing of system resources. | 04-21-2011 |
| 20110092219 | UPLINK MULTI-POWER AMPLIFIER/ANTENNA OPERATION AND CHANNEL PRIORITIZATION - Certain aspects of the present disclosure relate to techniques for controlling transmission power and prioritizing transmission carriers. A method of power distribution for different physical layer channels over one or more carriers in case of power limited user equipment (UE) is proposed. Operation modes of the UE with single and multiple power amplifiers/antennas can be supported. | 04-21-2011 |
| 20110098054 | SOUNDING REFERENCE SIGNAL FOR COORDINATED MULTI-POINT OPERATION - Systems and methodologies are described that facilitate configuring a sounding reference signal transmission in a wireless communication environment. A UE can employ coordinated multi-point transmission and/or reception such that multiple cells collaborate to transmit data to the UE and/or receive data from the UE. To support the coordinated multi-point transmission and/or reception, the UE can transmit a sounding reference signal that is configured to enable reliable reception of the sounding reference signal by members of a cooperating set. In addition, configuration of the sounding reference signal can be coordinated to enable more efficient transmission and utilization of the sounding reference signal. Configuration of the sounding reference signal can be based upon information exchanged between the multiple cells. Moreover, the multiple cells can coordinate to set and control a transmit power of the sounding reference signal. | 04-28-2011 |
| 20110103247 | CHANNEL STATUS REPORTING - Methods, systems, apparatus and computer program products are provided to facilitate the transmission of channel status information in wireless systems, such as advanced long-term evolution (LTE-A) systems. Requests for aperiodic channel status reports are generated in systems that use multiple carriers and operate in multiple-in-multiple-out (MIMO) configurations. The request enables a user equipment to configure two transport blocks for the transmission of channel status information only. In some instances, data, in addition to channel status information, is transmitted by the user equipment. | 05-05-2011 |
| 20110103286 | MBSFN SUBFRAME GENERATION AND PROCESSING FOR UNICAST - Certain aspects of the present disclosure propose methods and apparatus for utilizing unused Multimedia Broadcast over a Single Frequency Network (MBSFN) subframes for unicast transmissions. The proposed methods include efficient cyclic prefix (CP) and MBSFN frame structure design, and an optimized subframe/carrier bundling window design for hybrid automatic repeat request (HARQ) feedback in presence of the MBSFN subframes. | 05-05-2011 |
| 20110103295 | APPARATUS AND METHOD FOR PROVIDING RELAY BACKHAUL COMMUNICATIONS IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for designing a relay backhaul channel in a wireless communication system are provided. At least one relay node utilized for communication with respective user devices and at least one relay backhaul channel for conducting in-band half-duplex communication with the at least one relay node are identified. The relay backhaul channel may be an FDM channel, a TDM/FDM channel, or a joint R-PDCCH/R-PDSCH channel. The relay channel is used for communicating with the at least one relay node. The supportable ranks of the R-PDSCH channel may depend on the number of resources reserved for demodulation reference signals in the R-PDCCH region. | 05-05-2011 |
| 20110103296 | TDM-FDM RELAY BACKHAUL CHANNEL FOR LTE ADVANCED - Methods, apparatus and computer program products are provided for receiving a first group of resource blocks, frequency multiplexed in a transmission subframe, where the first group of resource blocks spans less than a full transmission bandwidth and includes a UE control channel in a first time interval, a relay control channel and a first quantity of dedicated reference symbols in a second time interval, and a shared data channel and a second quantity of dedicated reference symbols in a third time interval. | 05-05-2011 |
| 20110103330 | SPECTRUM INTERPRETATION IN A HETEROGENOUS NETWORK - Certain aspects of the present disclosure provide for the application of extension carriers and carrier segments in the context of heterogeneous networks. As described herein, different parts of the spectrum may be interpreted differently by different type of nodes. | 05-05-2011 |
| 20110103498 | METHOD AND APPARATUS FOR CONTROL AND DATA MULTIPLEXING IN A MIMO COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate control and data multiplexing for uplink (UL) multiple-input-multiple-output (MIMO) communication within a wireless communication system. As described herein, a device conducting uplink MIMO communication in a wireless communication system can multiplex control signaling and data across one or more of a plurality of layers (e.g., corresponding to spatial layers, codewords, etc.) associated with an uplink transmission. Techniques are described herein for selecting layers of a transmission on which to schedule control signaling and selecting offsets to apply to the control signaling scheduled on selected layers. Further, techniques are described herein for leveraging a multi-layer transmission to increase the efficiency of acknowledgement communication. In addition, techniques are described for selecting a modulation and coding scheme (MCS) to apply to control signaling that is combined with data in an uplink multi-layer transmission. | 05-05-2011 |
| 20110103509 | DOWNLINK CONTROL TRANSMISSION IN MULTICARRIER OPERATION - A wireless communication network distributes resources for a Physical Downlink Control CHannel (PDCCH) over multiple carriers in accordance with a constraint that limits a number of blind decoding actions required by user equipment (UE). Distribution can entail segregating UE-specific and common search spaces to different monitored carriers. Distribution can entail segregating aggregation levels to different monitored carriers. Distribution can entail segregating a number of decoding candidates for a given aggregation level to different monitored carriers. The distribution can be orthogonal or non-orthogonal, and can be UE-based or per cell-based. The distribution can be static, semi-static or hop with time. | 05-05-2011 |
| 20110103510 | RANK AND PRECODING INDICATION FOR MIMO OPERATION - Certain aspects of the present disclosure relate to a technique for signaling rank and precoding indications in uplink and downlink MIMO operations using codebook and non-codebook based precoding. | 05-05-2011 |
| 20110105050 | CROSS-CARRIER/CROSS-SUBFRAME INDICATION IN A MULTI-CARRIER WIRELESS NETWORK - Techniques for cross-subframe and cross-carrier scheduling of uplink and downlink transmissions in a multi-carrier wireless communication system are disclosed. A base station can include cross-subframe, carrier indication (xSF/CIF) information in a PDCCH message to signal to a user equipment (UE) which subframes and/or component carriers pertain to control information carried therein. The UE may utilize the xSF/CIF information to determine to which subframes and/or component carriers the control information is to be applied. | 05-05-2011 |
| 20110105059 | UPLINK POWER CONTROL FOR WIRELESS COMMUNICATION - Certain aspects of the present disclosure provide closed loop and open loop power control techniques for each antenna of the user equipment (UE). The access point may measure the received signals from each antenna of the user equipment, calculate a power adjustment parameter for each antenna of the UE, and transmit the parameters to the UE. The UE may use the adjustment parameters to determine the transmit power value for each antenna. In addition, the UE may measure the path loss for each antenna and update the transmit power per antenna based on the path loss and other parameters. | 05-05-2011 |
| 20110105137 | RANK AND PRECODING INDICATION FOR MIMO OPERATION - Certain aspects of the present disclosure relate to a technique for signaling rank and precoding indications in uplink and downlink MIMO operations using codebook and non-codebook based precoding. | 05-05-2011 |
| 20110110315 | FALSE DETECTION REDUCTION DURING MULTI-CARRIER OPERATION - Systems and methodologies are described that facilitate reducing false detections of control channels during blind decode when multiple component carriers are configured. A UE can perform blind detection of control channels on a plurality of carriers, wherein each control channel detected can be validated to reduce false detections. In one aspect, a reference carrier can be selected, wherein one or more detected control channels are validated so long as one detected control channel is on the reference carrier. In another aspect, control channel can be bundled such that multiple control channel detections are required for validation. Moreover, dummy control channels can be introduced that provide UE with guidance during blind decoding, as well as provide validation of detections. Further, various combinations of a reference carrier, bundling, and/or a dummy control channel can be utilized. | 05-12-2011 |
| 20110110316 | PDCCH SEARCH SPACE DESIGN FOR LTE-A MULTI-CARRIER OPERATION - A method, an apparatus, and a computer program product are provided in which a configuration for utilizing a plurality of carriers is received. In addition, a set of PDCCH candidates on a carrier of the plurality of carriers are determined for obtaining DCI for at least one carrier of the plurality of carriers. The number of PDCCH candidates is a function of a number of carriers of the at least one carrier. | 05-12-2011 |
| 20110110398 | METHOD AND APPARATUS FOR INTERACTION OF CELL-SPECIFIC AND USER-EQUIPMENT-SPECIFIC SOUNDING REFERENCE SIGNAL PERIODICITY AND OFFSET - Certain aspects of the present disclosure relate to a technique for enabling transmission of sounding reference signals for uplink and downlink scheduling. | 05-12-2011 |
| 20110110441 | JOINT LAYER 3 SIGNALLING CODING FOR MULTICARRIER OPERATION - Systems and methodologies are described that facilitate encoding layer 3 control information in a multicarrier wireless communication environment. The layer 3 control information can be jointly encoded for a plurality of component carriers. Further, the jointly encoded layer 3 control information for the plurality of component carriers can be included in a data transmission (e.g., PDSCH, PUSCH, . . . ) sent on a component carrier from the plurality of component carriers. Moreover, an allocation for the data transmission on the component carrier can be indicated by a control transmission (e.g., PDCCH, . . . ). For example, the control transmission and the data transmission, which can be scheduled by the control transmission, can be sent on a common component carrier or different component carriers from the plurality of component carriers (e.g., same carrier signalling or cross-carrier signalling can be implemented, . . . ). | 05-12-2011 |
| 20110110455 | RANK AND PRECODING INDICATION FOR MIMO OPERATION - Certain aspects of the present disclosure relate to a technique for signaling rank and precoding indications in uplink and downlink MIMO operations using codebook and non-codebook based precoding. | 05-12-2011 |
| 20110111781 | REFERENCE SIGNALING FOR A HIGH-MOBILITY WIRELESS COMMUNICATION DEVICE - A base station for enabling communication with a high-mobility wireless communication device is described. The base station includes a processor and instructions stored in memory. The base station identifies a high-mobility wireless communication device and sends a reference signal configuration. The base station also allocates an additional specific reference signal and sends the additional specific reference signal to the high-mobility wireless communication device. | 05-12-2011 |
| 20110116437 | SUBFRAME DEPENDENT TRANSMISSION MODE IN LTE-ADVANCED - A method of wireless communication includes communicating in a plurality of subframes. The subframes include a first type of subframe and a second type of subframe. The method further includes utilizing a transmission mode for each of the subframes based on the type of each of the subframes. A second method of wireless communication includes communicating in a plurality of subframes. The subframes include a first type of subframe and a second type of subframe. The second method further includes configuring a UE with a transmission mode for each of the subframes based on the type of each of the subframes. | 05-19-2011 |
| 20110116454 | SEMI-PERSISTENT SCHEDULING FOR MULTI-CARRIER WIRELESS COMMUNICATION - Certain embodiments of the present disclosure present methods for semi-persistent scheduling (SPS) for multi-carrier wireless communications systems. The proposed methods support activation and release of one or more SPS services in any subframe for a given user configured with a plurality of carriers. | 05-19-2011 |
| 20110116456 | METHOD AND APPARATUS FOR FACILITATING RELIABLE TRANSMISSION OF A CONTROL REGION SIZE AND DETECTION OF CROSS-CARRIER SIGNALING - Methods, apparatuses, and computer program products are disclosed for facilitating indicating and detecting control region sizes. A multi-carrier communication between a wireless terminal and a base station is facilitated by a first carrier having a first control region size and a second carrier having a second control region size. Embodiments are disclosed in which control region sizes are ascertained from a control signal, wherein the control is generated by either scrambling an aspect of the control signal based on the second control region size, or relating the second control region size with the first control region size. Other disclosed embodiments for ascertaining control region sizes include a reverse interleaver embodiment, wherein a set of modulation symbols is mapped beginning from a last data symbol and ending with a first available data symbol. | 05-19-2011 |
| 20110116457 | MULTICARRIER RETRANSMISSION FEEDBACK - Systems and methodologies are described that facilitate indicating feedback parameters for multiple single carrier assignments, multicarrier assignments, and/or the like according to single carrier-frequency division multiple access (SC-FDMA), relaxed SC-FDMA, etc. Feedback in relaxed SC-FDMA can be bundled by a mobile device to conserve power. In addition, a downlink assignment indicator (DAI) can be utilized to detect and indicate lost grants. | 05-19-2011 |
| 20110128922 | DOWNLINK ASSIGNMENT INDICATOR DESIGN FOR MULTI-CARRIER WIRELESS COMMUNICATION - Systems and methodologies are described herein that facilitate various techniques for enhanced downlink assignment index (DAI) signaling in a multi-carrier wireless communication system. As described herein, DAI and/or other indicator signaling transmitted on a first carrier can be configured to carry information relating to a number of downlink transmission assignments applied to at least a second carrier, which in some cases can be disparate from the first carrier. To these ends, described herein are techniques for cross-carrier DAI signaling, multiple DAI signaling, aggregate DAI signaling, and other similar techniques. As additionally described herein, DAI signaling can be related to downlink control transmissions and/or downlink data transmissions in connection with respective techniques that can be applied to the DAI signaling. | 06-02-2011 |
| 20110128933 | METHOD AND APPARATUS THAT FACILITATES OPERATING A RELAY VIA A MULTIMEDIA BROADCAST SINGLE FREQUENCY NETWORK BASED BACKHAUL LINK - Aspects are disclosed for operating a relay via an MBSFN-based backhaul link. Control resources are allocated, which include a first set of control resources and a second set of control resources. For some embodiments, a portion of the first set of control resources is concatenated with a portion of the second set of control resources to form a concatenation of resources whereas, in other embodiments, an indication scheme is implemented to provide an indication of a first or second allocation size respectively associated with the first and second set of control resources. At least one control signal is then transmitted which includes at least one of the concatenation or the indication. Other disclosed embodiments are directed towards configuring a user equipment to decode a control signal generated according to the aspects disclosed herein. | 06-02-2011 |
| 20110134771 | JOINT PARAMETER DETERMINATION AND SEPARATE CQI GENERATION REPORTING FOR LTE-A MULTICARRIER - Certain aspects of the present disclosure relate to a method for determining and reporting channel information feedback for multi-carrier operation. In one aspect, channel information feedback parameters may be determined jointly across component carriers, and channel information feedback reports may be generated and reported individually per component carrier. | 06-09-2011 |
| 20110141926 | METHOD AND APPARATUS FOR DISPATCHING A CHANNEL QUALITY INDICATOR FEEDBACK IN MULTICARRIER SYSTEM - In accordance with one or more aspects and corresponding disclosure thereof, various aspects are described in connection with channel quality indicator (CQI) feedback in connection with one or more downlink carriers. An anchor carrier scheme is employed to provide channel quality indicator (CQI) feedback of one or more downlink carriers. An indication is set to identify that a designated uplink carrier is used to convey the CQI feedback. An uplink carrier is selected from a set of uplink carriers as an anchor carrier to convey the CQI feedback. CQI feedback is transmitted for one or more downlink carriers using the designated carrier. | 06-16-2011 |
| 20110141959 | DATA PRIORITIZATION FOR A POWER-LIMITED UE IN A WIRELESS COMMUNICATION SYSTEM - Techniques for transmitting data by a power-limited user equipment (UE) in a wireless communication system are described. The UE may transmit data of different types on one or more carriers and may be power limited. In some aspects, the UE may prioritize the data to transmit based on the priorities of the different data types, the priorities of carriers on which the data is transmitted, and/or other criteria. In one design, the UE may obtain data to transmit on at least one carrier for the uplink. The UE may determine that it is power limited for transmission on the at least one carrier. The UE may prioritize the data to transmit based on at least one criterion. The UE may allocate its available transmit power to the prioritized data and may transmit the prioritized data at the allocated transmit power. | 06-16-2011 |
| 20110141982 | TRANSMISSION OF REFERENCE SIGNAL ON NON-CONTIGUOUS CLUSTERS OF RESOURCES - Techniques for transmitting a reference signal on multiple non-contiguous clusters of resources are described. A user equipment (UE) may be scheduled for data transmission on the multiple non-contiguous clusters, and each cluster may cover a set of contiguous subcarriers. The UE may generate the reference signal based on at least one reference signal (RS) sequence using code division multiplexing (CDM) or frequency division multiplexing (FDM). In an design, the UE generates the reference signal with CDM based on a single RS sequence having a length matching the total length of the multiple non-contiguous clusters. In another design, the UE generates the reference signal with CDM based on one RS sequence for each cluster. In yet another design, the UE generates the reference signal with FDM and transmits the reference signal on a subset of all subcarriers for the multiple non-contiguous clusters. | 06-16-2011 |
| 20110143675 | METHOD AND APPARATUS FOR FACILITATING RADIO LINK MONITORING AND RECOVERY - Methods, apparatuses, and computer program products are disclosed for facilitating a radio link failure determination. A wireless terminal is configured to monitor a control channel quality of a control signal over at least one control carrier. A radio link failure determination is then made based on the control channel quality of the at least one control carrier. In other embodiments, rather than basing the radio link failure determination solely on the set of control carriers, the wireless terminal is configured to monitor a control channel quality over at least one additional carrier, not included in the set of control carriers, in response to a link loss detected over each of the set of control carriers. For such embodiments, the radio link failure determination is then made based on the control channel quality of the additional carrier(s). | 06-16-2011 |
| 20110149774 | APPARATUS AND METHOD FOR TRANSMIT-RESPONSE TIMING FOR RELAY OPERATION IN WIRELESS COMMUNICATIONS - An apparatus and method for relay operation in a wireless communication system comprising determining a first set of subframes for downlink communication from an eNB to a relay node; determining a second set of subframes for uplink communication from the relay node to the eNB; determining a downlink (DL) hybrid automatic repeat request (HARQ) timing between a first control transmission and a HARQ acknowledge (ACK) message based on a first minimum delay and the first and the second sets of subframes; and determining an uplink (UL) hybrid automatic repeat request (HARQ) timing between a second control transmission and an uplink transmission based on a second minimum delay and the first and the second sets of subframes. | 06-23-2011 |
| 20110149894 | PROTECTION OF BROADCAST SIGNALS IN HETEROGENEOUS NETWORKS - Certain aspects of the disclosure provide for the protection of broadcast signals in heterogeneous networks. As described herein, a first set of resources used for downlink transmission in a first cell may overlap with a second set of resources used for broadcast signals in a second cell. The broadcast signals may be protected by allocating a third set of resources for the downlink transmission in the first cell, wherein the third set of resources is based, at least in part, on the overlapping set of resources. | 06-23-2011 |
| 20110158351 | METHOD AND APPARATUS FOR COMMUNICATING ANTENNA PORT ASSIGNMENTS - A method, an apparatus, and a computer program product for wireless communication are provided in which downlink control information (DCI) including a total number of available antenna ports, a rank indicator for a user equipment (UE), and one or more port assignment bits is received, a subset of the total number of available antenna ports that are assigned to the UE based on at least one of: the rank indicator or the one or more port assignment bits is determined, and demodulation based on reference signals corresponding to the set of assigned antenna ports is performed. | 06-30-2011 |
| 20110159914 | Interaction Between Accumulative Power Control And Minimum/Maximum Transmit Power In LTE Systems - Methods and apparatus in a wireless communication system are described for receiving and processing transmit power control commands, where, for example, the response to the transmit power control commands is conditionally decoupled from at least one of a transmit bandwidth parameter, a transport format parameter and a power stepsize limit. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 06-30-2011 |
| 20110164550 | Downlink Control Channel for Relay Resource Allocation - Certain aspects of the present disclosure provide a method for wireless communications. The method generally includes allocating resources of a backhaul link between a donor base station and a relay base station to the relay station for communicating with the donor base station and transmitting a control channel indicating the allocated resources to the relay base station, wherein the control channel is transmitted on a subset of physical resource blocks (PRBs) of subframes assigned for downlink communications on the backhaul link. | 07-07-2011 |
