Patent application number | Description | Published |
20090327829 | METHOD FOR CONTROLLING DATA RETRANSMISSION IN WIRELESS NETWORK AT THE FINAL RETRANSMISSION - To resolve the signaling error problem possibly happening at the final retransmission in the wireless network using ARQ, a method, in the communication equipment as a receiver in the wireless network using ARQ, for controlling data retransmission at the final retransmission, a corresponding method for auxiliary controlling data retransmission, and a controlling device and a corresponding auxiliary controlling device thereof are disclosed. Furthermore, a communication equipment in the wireless network using ARQ is also disclosed, which can be a network equipment or a user equipment. With the proposed method, corresponding device and communication equipment, the wireless network can effectively avoid the signaling error problem at the final retransmission, effectively utilize the wireless resource, reduce the requirement for the HARQ buffer, increase the automatic retransmission speed and avoid the unrecoverable problem of discarding of the data packet. | 12-31-2009 |
20100008350 | METHOD AND DEVICE OF TRANSMITTING AND PARSING DATA IN WIRELESS COMMUNICATION NETWORK - The present invention provides a method and corresponding device of processing and parsing a to-be-transmitted data packet in a communication network, such as a LTE system. A sub-header that is used for a header portion of a transmitted data packet is generated for each component data packet constituting the transmitted data packet, containing: original data packet ID for indicating an original data packet which the component data packet belongs to; segmentation processing ID for indicating times of segmentation happened to the original data packet in order to the component data packet, and a data segment which said component data packet belongs to after each segmentation; data amount IF for indicating a data amount of a data portion of the data packet. With the technical solution provided by the present invention, the header structure definition of a data packet is optimized, and the transmission resource utilization efficiency is improved. | 01-14-2010 |
20100284292 | PERSISTENT SCHEDULING METHOD AND APPARATUS BASED ON SEMI-GROUPING AND STATISTICALLY MULTIPLEXING - A persistent scheduling method and apparatus based on semi-grouping and statistically multiplexing, wherein a predetermined number of user equipments are grouped into a user equipment group to share allowable maximum transmission times of retransmission processes in different time slots each having a predetermined size, according to a predetermined set of criteria on communication conditions; and each user equipment within one user equipment group is allocated to use a corresponding time slot in a time division multiplexing mode. | 11-11-2010 |
20100284364 | SEMI-PERSISTENT SCHEDULING METHOD AND APPARATUS BASED ON STATISTICALLY MULTIPLEXING IN TIME AND FREQUENCY RESOURCES - A semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frequency resources, the method comprises steps of: allocating each initial transmission to use fixed time and frequency resources reserved for initial transmission by using a persistent grant, and allocating each retransmission to use time resource reserved for retransmission by using a persistent grant and dynamically allocating each retransmission to use frequency resource reserved for retransmission by using a dynamic grant or a default grant, wherein the initial transmission and the retransmission share the frequency resources within the same time slot. | 11-11-2010 |
20110026467 | METHOD AND DEVICE FOR REPORTING REQUEST FOR UPLINK SCHEDULING OR EMERGENCY IN WIRELESS NETWORK - The object of the present invention is to provide a reporting strategy for uplink scheduling request information in wireless telecommunication network. Above all, a method for the user equipment to report the uplink scheduling request information to the base station in wireless telecommunication network is disclosed. Firstly, the user equipment computes the overall service data amount of all radio bearers in each group of radio bearers in the buffer of the user equipment; then the user equipment only reports group-related information of triggered one or more groups of radio bearers to the base station. The present invention further proposes a method in the user equipment in wireless telecommunication network for reporting the emergency information to the base station, that is, the user equipment judges whether each radio bearer is in the emergency, and when one or more radio bearers are in the emergency, the user equipment sends emergency indication information to the base station. By the combination of the two reporting method, the base station can realize efficient and fair scheduling. | 02-03-2011 |
20110107174 | METHOD AND APPARATUS FOR INTERCHANGING MULTIPATH SIGNALS IN A SC-FDMA SYSTEM - The present invention provides a MIMO transmitter and a MIMO receiver, used in SC-FDMA system, which make interchanging for multiple paths of modulated symbol sequences in order to acquire diversity gain while ensure PAPR of single antenna. MIMO transmitter interchanges partial symbols of at least one error-correction codeword of at least one of the multipath modulated symbol sequences and partial symbols of at least one error-correction codeword of at least one of the other of the multipath modulated symbol sequences so as to obtain interchanged multipath modulated symbol sequences; MIMO receiver executes inverse-interchanging which is inverse to the interchanging in a MIMO transmitter for multipath interchanged signals received from multiple transmitting antennas. The present invention could reduce the BLER of the entire SC-FDMA system, and obtain diversity gain while ensure PAPR of single antenna. | 05-05-2011 |
20110134853 | METHOD FOR ALLOCATING MOBILE USER RESOURCE AND RESOURCE ALLOCATION SCHEDULER USING THE SAME - Disclosed is a method for allocating mobile user resource, which comprises the steps of: randomly generating a resource allocation mapping sequence by a base station based on a hopping scheme, which has a variable hopping distance; and allocating communication resource by the base station to each UE within a cell, where the base station is present, based on the generated resource allocation mapping sequence. Since the hopping scheme is generated randomly, the resource allocation scheme according to the present invention may randomize a resource allocation procedure among different cells, thereby randomizing the inter-cell interference and decreasing dramatic changes of interference due to the user's movement. | 06-09-2011 |
20110216712 | COMMUNICATION METHOD AND APPARATUS FOR CONTROLLING DATA TRANSMISSION AND RETRANSMISSION OF MOBILE STATION AT BASE STATION - Disclosed is a communication method for controlling data transmission of a mobile station at a base station. The method comprises the steps of: determining, by the base station, a transmission operation to be performed by the mobile station in next transmission time interval based on HARQ and schedule result; sending, in a downlink by the base station, an ACK/NACK packet, an indicator indicating the type of the transmission by the mobile station and a resource use command for the used resource based on the determined transmission operation; receiving, by the mobile station, the ACK/NACK packet, the indicator and the resource use command sent from the base station, and performing respective transmission operations according to the received ACK/NACK packet, indicator and resource use command without using any data-associated signaling in an uplink. | 09-08-2011 |
20110300873 | RESOURCE SCHEDULING METHOD, SCHEDULER AND BASE STATION - The present invention proposes a distributed probabilistic dynamic interference coordination scheme to decrease or eliminate inter-cell interference, wherein the mechanism of ALOHA is introduced into the dynamic interference coordination. According to the first aspect of the present invention, a resource scheduling method is proposed, comprising: selecting resource to be scheduled from a scheduling list; selecting a first user equipment to be scheduled from the scheduling list; allocating the selected resource to the first user equipment by probability of p, wherein 0≦p≦1, if the first user equipment is of edge user. The present invention further proposes a scheduler implementing the aforesaid resource scheduling method and a base station (BS) comprising the aforesaid scheduler. | 12-08-2011 |
20120002576 | METHOD AND SYSTEM FOR AVOIDING INTERFERENCE CAUSED BY NON-SYNCHRONIZATION IN RELAY TDD SYSTEM - The present invention provides a method and a device for eliminating interference in a wireless relay TDD system. Data is sent between a relay station and a base station by occupying time slots of guard period, thereby the interference caused by non-synchronization between the base station and the relay station is eliminated. | 01-05-2012 |
20120002611 | METHOD AND APPARATUS FOR UPLINK COORDINATED MULTI-POINT TRANSMISSION OF USER DATA - The present invention provides an uplink progressive multi-point coordinated MIMO processing scheme. A coordinated processing management equipment determines whether it is necessary to send ACK or NACK message to neighboring base stations in the same CoMP cluster; when it is necessary to send ACK message to the neighboring base stations, the ACK message is sent to all the neighboring base stations in the cluster which have not participated in joint to inform each neighboring base stations that it is not necessary to send user data to the coordinated processing management equipment; when it is necessary to send NACK message to the neighboring base stations, the NACK message is sent to at least one neighboring base station in the cluster which has not participated in joint to inform the at least one base stations to send user data to the coordinated processing management equipment; according to the user data obtained by the base station and the user data from the at least one neighboring base stations, the coordinated processing management equipment performs joint detection and combination. Through the application of solution of the invention, the backhaul cost has been saved and the complexity of the system realization is reduced. | 01-05-2012 |
20120008565 | METHODS AND APPARATUSES FOR MULTI-CELL COLLABORATIVE COMMUNICATION IN A MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method and device for multiple-cell collaborative communication in a multiple input multiple output (MIMO) system are disclosed by the present invention. In said method, base stations participating in multiple-cell collaborative MIMO communication perform precoding and scheduling one by one. At first, a first base station selects the mobile terminals participating in the collaborative communication and performs transmission setting, including pre-coding setting; then the scheduling and setting results of the first base station are kept invariant, so that a second base station selects the mobile terminals participating in the collaborative communication and performs transmission setting, including pre-coding setting, according to the scheduling and setting results of the first base station. If a third base station participates in the multiple-cell collaborative MIMO communication, the scheduling and setting results of the first and second base stations are kept invariant, so that the third base station selects the mobile terminals participating in the collaborative communication and performs transmission setting, including pre-coding setting, according to the scheduling and setting results of the first and second base stations. Based on the gradual collaborative communication method, fully distributed multiple-cell collaborative MIMO communication can be achieved. | 01-12-2012 |
20120014312 | METHOD AND DEVICE FOR CONTROLLING PROPAGATION DELAY IN A COMP TRANSMISSION SYSTEM - The present invention proposed a method and a device for controlling propagation delay in a base station of a wireless communication system based on COMP transmission. To be specific, w hen sending downlink data to a mobile station, the base station processes part of data of one or more other unsynchronized base stations and sends the processed part of data to the mobile station at one or more specific time slots simultaneously. By applying the solution of the present invention, because data, corresponding to the length of the out-of-synchronization information, of an unsynchronized base station is sent to the mobile station at a specific time slot by a synchronized base station or other unsynchronized base stations, DL data that is sent to the mobile station by the unsynchronized base station all falls within the detection window of the mobile station, such that the resulted problem of the decreased performance of a receiver due to the propagation delay is solved. | 01-19-2012 |
20120014315 | METHODS AND DEVICES FOR IMPLEMENTING SYNCHRONOUS UPLINK HARQ PROCESS IN MULTIPLE BS COORDINATED RECEIVING NETWORKS - The invention provides methods for implementing synchronous uplink HARQ process in multiple BS coordinated receiving network. According to one embodiment, for synchronous uplink HARQ process with a relatively short response time limit, the service BS provides a receiving response in accordance with the response time limit, and formally instructs the terminal to retransmit or start a new transmission after the merging is completed. According to another embodiment, the synchronous uplink HARQ process has a response time limit matching the delay of multiple BS Coordinated network, and thus the service BS can transmit receiving response or control signaling on PDCCH after the mergence is completed. Thereby, the synchronous uplink HARQ process in multiple BS Coordinated networks of LTE and LTEA can be implemented. | 01-19-2012 |
20120026936 | METHOD, APPARATUS AND DEVICE FOR RELAY USER SELECTION AND DOWNLINK RESOURCE ALLOCATION - The present invention proposes a method, apparatus and device for relay user selection and downlink resource allocation in a base station of a relay communication system. Specifically the base station performs relay user selection and downlink resource allocation according to a pattern of a cell-specific reference signal thereof and/or a reception demodulation scheme of a mobile terminal. With the method, apparatus or device according to the invention, it is possible to alleviate and even eliminate influence of overlapping cell-specific reference signals upon the performance of reception demodulation at a user terminal. | 02-02-2012 |
20120069807 | TRANSMITTER WITH MULTIPLE ANTENNAS AND DATA TRANSMISSION METHOD IN THE TRANSMITTER WITH MULTIPLE ANTENNAS - According to one aspect of the present invention, a multi-antenna transmitter is provided. The transmitter includes: a data block acquiring device for acquiring multiple data streams, wherein each data stream includes data blocks at multiple slots; and a grouping and mapping device for grouping and mapping each data block, wherein the data blocks at the same slot in each data stream are grouped according to the number of the antennas and each group is mapped to one of the antennas respectively, and the different data blocks in the same group are mapped to different sub-bands respectively; and wherein grouping and mapping manners which are not exactly the same are adopted for the data blocks at different slots, and the grouping and mapping manners include data block grouping manners, group-to-antenna mapping manners, and sub-band mapping manners. And the groups of data blocks at the multiple slots are transmitted via the antennas. With the technical solutions of the present invention, a reduced PAPR during data transmission can be achieved while the diversity gain is guaranteed. | 03-22-2012 |
20120140851 | METHOD OF MAINTAINING COHERENCY OF A PRECODING CHANNEL IN A COMMUNICATION NETWORK AND ASSOCIATED APPARATUS - In prior art, selection of precoding granularity is affected by two inter-restricting factors, i.e., precoding accuracy and channel estimation at a mobile terminal. To solve this problem, the present invention provides a method of maintaining coherency of a precoding channel in a communication network and an associated apparatus. During precoding, this method takes into account both channel coherency and system capacity. A base station adjusts phase and/or amplitude of a precoding matrix corresponding to each precoded unit to maintain coherency of associated information of the overall precoding channel. The associated information of the precoding channel includes, for example, CSI or eigenvalue matrix of the precoding channel. Afterwards, a mobile terminal performs channel estimation based on reference signals of multiple precoded units, thereby eliminating the limitation in prior art that a mobile terminal can perform channel estimation only within one or more resource block limited by a precoding granularity. | 06-07-2012 |
20120300724 | METHOD AND APPARATUS FOR REDUCING THE OVERHEAD OF CONTROL SIGNALING - The invention relates to a method and apparatus for reducing an overhead of control signaling. The method of reducing an overhead of control signaling comprises the steps of: generating one of a plurality of downlink control information formats which is used for scheduling a physical uplink shared channel, and transmitting the generated one of the plurality of downlink control information formats which is used for scheduling the physical uplink shared channel, wherein each of the plurality of downlink control information formats includes a minimum payload required for a specific scenario. With the invention, the signaling overhead is minimized. | 11-29-2012 |
20150071264 | COMMUNICATION METHOD AND APPARATUS FOR CONTROLLING DATA TRANSMISSION AND RETRANSMISSION OF MOBILE STATION AT BASE STATION - Disclosed is a communication method for controlling data transmission of a mobile station at a base station. The method comprises the steps of: determining, by the base station, a transmission operation to be performed by the mobile station in next transmission time interval based on HARQ and schedule result; sending, in a downlink by the base station, an ACK/NACK packet, an indicator indicating the type of the transmission by the mobile station and a resource use command for the used resource based on the determined transmission operation; receiving, by the mobile station, the ACK/NACK packet, the indicator and the resource use command sent from the base station, and performing respective transmission operations according to the received ACK/NACK packet, indicator and resource use command without using any data-associated signaling in an uplink. | 03-12-2015 |