Abstract: Embodiments of the present invention provide a method and an apparatus for allocating a device-to-device (D2D) communication resource. The method for allocating a device-to-device D2D communication resource in the present invention comprises: receiving, by a first network device, a device-to-device D2D communication capability sent by a user device within coverage; sending, by the first network device according to the communication capability, a resource identifier to each user device within the coverage of the first network device in a D2D group, where the D2D group includes at least two user devices; and sending, by the first network device, a resource allocation message, where the resource allocation message carries D2D communication resource allocation information corresponding to the resource identifier.

Abstract: Embodiments of the present invention provide a method and an apparatus for reciprocity calibration between base stations, which relate to the communications field, and can improve precision of reciprocity calibration between base stations. The method includes: obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station.

Abstract: A method and an apparatus for scheduling terminals in a system with multiple antenna elements combining into a common cell are provided. The method includes: receiving channel quality information fed back by the multiple terminals in the common cell, determining, according to the channel quality information fed back by the multiple terminals, all terminals capable of being bound to each antenna element; determining a first antenna element among the antenna elements in the common cell on a first time domain resource within a scheduling granularity, determining a terminal to be served on the first time domain resource, and beginning to serve the terminal; and scheduling all terminals capable of being bound to the first antenna element on each remaining time domain resource within the scheduling granularity, determining a terminal to be served on each remaining time domain resource, and beginning to serve the terminal.

Abstract: Embodiments of the present patent application disclose a method for inter-terminal coordinated communication, a device and a system. The present patent application relates to the field of communications, and inter-terminal coordinated transmission is accomplished by sharing specific information between coordinated terminals so as to improve performance of a system. The method provided by the embodiments of the present patent application includes: obtaining, by a first terminal, a shared signal according to a signal received by the first terminal from a network side; and sending, by the first terminal, shared information to a second terminal, for enabling the second terminal to obtain information that the network side needs to send to the second terminal according to the shared information and a signal received by the second terminal from the network side, where the shared information includes the shared signal.

Abstract: A method and an apparatus for adjusting transmit powers of base station antennas, and a base station are provided. The method includes receiving an input precoding matrix of a transmit power-limited antenna set, where the precoding matrix is determined according to a scheduling result of a user equipment communicating with a base station in each layer of each subband in a system; adjusting the precoding matrix according to a transmit power limit requirement of the transmit power-limited antenna set, a system capacity improvement requirement, or a coverage performance improvement requirement to obtain an adjusted precoding matrix; and adjusting a stream transmit power of the transmit power-limited antenna set by using the adjusted precoding matrix.

Abstract: A downlink channel quality information acquisition method includes: a transmission node in a coordinated node set acquires the noise receiving power of a user equipment (UE11) and the interference power on the UE11 of a node in a non-coordinated set; the transmission node in the coordinated node set acquires, via the transmission node in the coordinated node set, an inter-user interference power during the multi-user scheduling and the effective signal receiving power of the UE11; the transmission node in the coordinated node set acquires the interference power on the UE11 of a non-transmission node in the coordinated set; calculating the ratio between the effective signal receiving power and the sum of an interference source power and the noise receiving power of the UE11, and using the ratio as the value of the downlink CQI between the transmission node and the UE11.

Abstract: Embodiments of the present invention provide a multi-user interference suppression method, terminal and base station. The method includes performing layer mapping on and precoding service data of each of paired users to obtain precoded output data, mapping the precoded output data and a common pilot sequence to a port of an antenna array for sending to each user by using the antenna array. Correspondingly, the embodiments of the present invention further provide a data receiving method, base station and terminal. By using a common pilot sequence based on the paired users, the same pilot sequence is used for each user in the paired users of a cell or a collaborative area, which is different from the technical solution in the prior art where a user-specific pilot is used and pilots of different users are orthogonal.

Abstract: A method and an apparatus for transmitting control information are disclosed. The method includes: grouping UEs in a cell, and obtaining second control information of each UE group after grouping; performing joint channel coding on the second control information of each UE group; obtaining first control information, and transmitting the first control information to the UEs in the cell, where the first control information includes indication information of the second control information, on which joint channel coding has been performed, of each UE group, so as to obtain the second control information according to the indication information; and transmitting the second control information, on which joint channel coding has been performed, of each UE group to the UEs in the cell.

Abstract: A method and an apparatus for scheduling terminals in a system with multiple antenna elements combining into a common cell are provided. The method includes: receiving channel quality information fed back by the multiple terminals in the common cell, determining, according to the channel quality information fed back by the multiple terminals, all terminals capable of being bound to each antenna element; determining a first antenna element among the antenna elements in the common cell on a first time domain resource within a scheduling granularity, determining a terminal to be served on the first time domain resource, and beginning to serve the terminal; and scheduling all terminals capable of being bound to the first antenna element on each remaining time domain resource within the scheduling granularity, determining a terminal to be served on each remaining time domain resource, and beginning to serve the terminal.

Abstract: Embodiments of the present invention disclose a method and apparatus for managing a user equipment. A long term evolution distributed antenna system LTE DAS cell including multiple antenna units AUs is divided into multiple portions, where the portion corresponds to one or multiple AUs; a resource is scheduled for a UE by taking the portion as a unit and interference control and mobility management are performed in the cell. By applying the present invention, efficiency during the interference management and handover may be improved, and system capacity may be increased.

Abstract: A method and an apparatus for sharing a cell-ID between sites and determining a cell-ID of a site in cooperative communication includes: obtaining a synchronization sequence set, where the synchronization sequence set is used to determine a cell-ID (Cell-ID); and allocating synchronization sequences in the same synchronization sequence set to multiple sites, where the synchronization sequences in the same synchronization sequence set are used to determine antenna unit IDs (AU-ID) of respective sites. Through the embodiments, a system overhead may be decreased.

Abstract: A method and an apparatus for sharing a cell-ID between sites and determining a cell-ID of a site in cooperative communication includes: obtaining a synchronization sequence set, where the synchronization sequence set is used to determine a cell-ID (Cell-ID); and allocating synchronization sequences in the same synchronization sequence set to multiple sites, where the synchronization sequences in the same synchronization sequence set are used to determine antenna unit IDs (AU-ID) of respective sites. Through the embodiments, a system overhead may be decreased.

Abstract: A method and apparatus for obtaining a Symbol Mapping Diversity (SMD), creating a constellation map, and modulating are disclosed.