Abstract: Embodiments of the present invention provide a data transmission method, a user equipment, and a base station. The method includes: obtaining a resource element RE configuration, where an RE indicated by the RE configuration is a subset of the RE available for sending a channel state information reference signal CSI-RS and is the RE onto which a data symbol can be mapped; and receiving, according to the RE configuration, the data symbol that is sent by a base station on the RE indicated by the RE configuration. In the embodiments of the present invention, a data symbol can be mapped onto the RE that is used for sending the CSI-RS, so that a UE can receive the data symbol on the RE that is used for sending the CSI-RS, thereby improving the utilization efficiency of the RE.

Abstract: The present invention provides a method for sending and receiving control information, an apparatus and a communication system. The method for sending control information includes: setting respective control bits in a downlink control information (DCI) format to generate control information applied by a network side to a terminal, wherein indication information indicating whether to swap a corresponding relationship between a transmission block and a codeword is not carried in a control bit in the DCI format, if a dedicated demodulation reference signal used to demodulate data is preconfigured by the network side for the terminal and respective codewords correspond to the same number of layers; and the indication information is carried in a control bit in the DCI format, if the dedicated demodulation reference signal used to demodulate data is not preconfigured by the network side for the terminal; and sending the generated control information to the terminal.

Abstract: Embodiments of the present invention provide a method and a system for measuring a channel quality indicator, a user equipment and a base station. The method includes: obtaining a channel quality indicator configuration, where the channel quality indicator configuration includes a first combination, and the first combination includes a valid signal processing manner and an interfering signal processing manner; performing valid signal processing and interfering signal processing according to the valid signal processing manner and the interfering signal processing manner in the first combination to obtain a valid signal and an interfering signal; performing channel quality indicator calculation according to the valid signal and the interfering signal to obtain a channel quality indicator; and feeding the channel quality indicator back to a base station.

Abstract: The present invention is applicable to the field of radio communication technologies, and provides a carrier allocation method, a user equipment, and a base station. The method comprises: acquiring, by a base station, a carrier hopping pattern; sending, by the base station to a user equipment UE, carrier configuration information, where the carrier configuration information comprises information about activating carrier hopping and/or the carrier hopping pattern, the carrier hopping pattern presents a carrier set used by a user equipment in at least one time unit, and the carrier set comprises at least one carrier; and sending, by the base station, a signal to the UE and/or receiving a signal from the UE according to the carrier hopping pattern.

Abstract: A compensation method, a base station, and a user equipment for uplink power control in a CoMP system are provided. The method includes: a base station determines an adjustment value for an uplink sending power of a UE; the base station sends to the UE indication information and the adjustment value for the uplink sending power of the UE, where the indication information is used for indicating a range of the adjustment value for the uplink sending power of the UE, so that the UE, according to the indication information and the adjustment value for the uplink sending power of the UE, determines the uplink sending power of the UE. Embodiments of the present invention are capable of improving the quality of sending uplink data.

Abstract: Embodiments of the present invention provide a channel-state information process processing method, a network device, and a user equipment, where the channel-state information process processing method includes: after receiving a first channel-state information CSI request sent by a first network device, if CSI corresponding to multiple aperiodic CSI processes has not been reported by a user equipment, dropping CSI corresponding to a part of aperiodic CSI processes among the multiple aperiodic CSI processes, where each CSI process is associated with a channel measurement resource and an interference measurement resource. A problem existing after a CoMP technology is introduced can be solved that the UE cannot implement processing of multiple CSI processes.

Abstract: The present invention provides a method for sending and receiving control information, an apparatus and a communication system. The method for sending control information includes: setting respective control bits in a downlink control information (DCI) format to generate control information applied by a network side to a terminal, wherein indication information indicating whether to swap a corresponding relationship between a transmission block and a codeword is not carried in a control bit in the DCI format, if a dedicated demodulation reference signal used to demodulate data is preconfigured by the network side for the terminal and respective codewords correspond to the same number of layers; and the indication information is carried in a control bit in the DCI format, if the dedicated demodulation reference signal used to demodulate data is not preconfigured by the network side for the terminal; and sending the generated control information to the terminal.

Abstract: Embodiments of the present invention provide a method and a system for measuring a channel quality indicator, a user equipment and a base station. The method includes: obtaining a channel quality indicator configuration, where the channel quality indicator configuration includes a first combination, and the first combination includes a valid signal processing manner and an interfering signal processing manner; performing valid signal processing and interfering signal processing according to the valid signal processing manner and the interfering signal processing manner in the first combination to obtain a valid signal and an interfering signal; performing channel quality indicator calculation according to the valid signal and the interfering signal to obtain a channel quality indicator; and feeding the channel quality indicator back to a base station.

Abstract: Provided in embodiments of the present application are a method and terminal for handling channel state information (CSI). The embodiments use the terminal to measure and report to a base station first CSI, where the first CSI comprises a first rank indicator (RI), a first precoding matrix indicator (PMI), and a first channel quality indicator (CQI), to acquire a second RI and/or a second PMI on the basis of the first CSI. The terminal is able to utilize the second RI to measure and report to the base station the PMI and CQI corresponding to the second RI; or, utilize the second RI and the second PMI to measure and report to the base station the CQI corresponding to the second RI and to the second PMI; or, utilize the second PMI to measure and report to the base station the RI and CQI corresponding to the second PMI.

Abstract: Embodiments of the present invention provide a channel-state information process processing method, a network device, and a user equipment, where the channel-state information process processing method includes: after receiving a first channel-state information CSI request sent by a first network device, if CSI corresponding to multiple aperiodic CSI processes has not been reported by a user equipment, dropping CSI corresponding to a part of aperiodic CSI processes among the multiple aperiodic CSI processes, where each CSI process is associated with a channel measurement resource and an interference measurement resource. A problem existing after a CoMP technology is introduced can be solved that the UE cannot implement processing of multiple CSI processes.

Abstract: Embodiments of the present invention disclose an interference measurement indication method, an interference measurement method, a related device, and a communication system. The interference measurement indication method includes: transmitting, by a base station, at least one piece of first-type channel state information reference signal CSI-RS configuration signaling to a user equipment UE, where the at least one piece of first-type CSI-RS configuration signaling indicates a first resource set used for CSI-RS transmission; and transmitting, by the base station, at least one piece of second-type CSI-RS configuration signaling to the UE, where a second resource set used for CSI-RS transmission, which is indicated by the at least one piece of second-type CSI-RS configuration signaling, is a subset of the first resource set. Technical solutions provided by the embodiments of the present invention help improve the flexibility of interference measurement of the UE.

Abstract: Embodiments of the present invention disclose a cell configuration method, a method for implementing synchronization between a user equipment and a base station, a user equipment, and a base station. The cell configuration method includes: determining, by a first base station corresponding to a first cell, system information of a second cell; and notifying, by the first base station, a second base station corresponding to the second cell of the system information, so that the second base station sends and receives signals according to the system information. According to the solutions provided in the embodiments of the present invention, system information of a cell may be dynamically or semi-statically adjusted according to user equipment distribution and service distribution, so that network resources can be better provided for a user equipment that needs them, a capability of serving the user equipment is improved.

Abstract: Provided in embodiments of the present application are a method and terminal for handling CSI. The embodiments of the present invention use the terminal to measure and report to a base station first CSI, where the first CSI comprises a first RI, a first PMI, and a first CQI, to acquire a second RI and/or a second PMI on the basis of the first CSI, thus allowing the terminal to utilize the second RI to measure and report to the base station the PMI and CQI corresponding to the second RI; or, the terminal utilizes the second RI and the second PMI to measure and report to the base station the CQI corresponding to the second RI and to the second PMI; or, the terminal utilizes the second PMI to measure and report to the base station the RI and CQI corresponding to the second PMI.

Abstract: Embodiments of the present invention disclose a cell configuration method, a method for implementing synchronization between a user equipment and a base station, a user equipment, and a base station. The cell configuration method includes: determining, by a first base station corresponding to a first cell, system information of a second cell; and notifying, by the first base station, a second base station corresponding to the second cell of the system information, so that the second base station sends and receives signals according to the system information. According to the solutions provided in the embodiments of the present invention, system information of a cell may be dynamically or semi-statically adjusted according to user equipment distribution and service distribution, so that network resources can be better provided for a user equipment that needs them, a capability of serving the user equipment is improved.

Abstract: Embodiments of the present invention disclose an interference measurement indication method, an interference measurement method, a related device, and a communication system. The interference measurement indication method includes: transmitting, by a base station, at least one piece of first-type channel state information reference signal CSI-RS configuration signaling to a user equipment UE, where the at least one piece of first-type CSI-RS configuration signaling indicates a first resource set used for CSI-RS transmission; and transmitting, by the base station, at least one piece of second-type CSI-RS configuration signaling to the UE, where a second resource set used for CSI-RS transmission, which is indicated by the at least one piece of second-type CSI-RS configuration signaling, is a subset of the first resource set. Technical solutions provided by the embodiments of the present invention help improve the flexibility of interference measurement of the UE.

Abstract: The present invention discloses a method, a device, and a system for measuring channel state information, which relate to the communications field. The method includes: transmitting, by a base station BS, multiple sets of channel state indication reference signal CSI-RS resources; and notifying a user equipment UE of an aggregation mode of the CSI-RS resources, so that after the UE aggregates the multiple sets of CSI-RS resources according to the aggregation mode of the CSI-RS resources to form a measurement source, the UE performs CSI measurement according to a channel corresponding to CSI-RS ports on the measurement source.

Abstract: Embodiments of the present application provide a method, a terminal, and a base station for transmitting information. In the embodiments of the present application, subframe configuration information of a first carrier is obtained, where the subframe configuration information is used to indicate a type-1 subframe of the first carrier and a type-2 subframe of the first carrier, the type-1 subframe is used for the base station to transmit, in system bandwidth, first information including a first CRS, the first CRS is used for demodulation, and the type-2 subframe is not used for the base station to transmit a CRS used for demodulation, so that the terminal can receive, according to the subframe configuration information and on the first carrier, information sent by the base station.

Abstract: A method includes: sending, by a user equipment (UE), uplink test signaling to transceivers for serving the UE, so that the transceivers calculate receive power of the uplink test signaling by testing the uplink test signaling; receiving, by the UE, the receive power of the uplink test signaling and transmit power of a common reference signal (CRS) from the transceivers; receiving and testing, by the UE, the CRS sent by the transceivers to obtain receive power of the CRS; calculating, by the UE, uplink path losses on paths between the UE and the transceivers according to the receive power of the uplink test signaling, the transmit power of the CRS, and the receive power of the CRS; calculating, by the UE, an aggregate path loss according to the uplink path losses on paths between the UE and the transceivers; and calculating, by the UE, uplink transmit power according to the aggregate path loss.

Abstract: A method for configuring a channel state information reference signal includes dividing access points into a first access point set and a second access point set, configuring a first CSI-RS pilot pattern for a user equipment and allocating the pattern to the first access point set, configuring a second CSI-RS pilot pattern and allocating the pattern to the second access point set, and configuring a third CSI-RS pilot pattern and allocating the pattern to an antenna set formed by a first antenna of a first access point in the first access point set and a first antenna of a first access point in the second access point set; and sending non-zero power CSI-RS configuration information to the user equipment, so that the user equipment measures and reports first downlink channel state information, second downlink channel state information, and third downlink channel state information of the antenna set.

Abstract: The present invention provides a method for sending and receiving control information, an apparatus and a communication system. The method for sending control information includes: setting respective control bits in a downlink control information (DCI) format to generate control information applied by a network side to a terminal, wherein indication information indicating whether to swap a corresponding relationship between a transmission block and a codeword is not carried in a control bit in the DCI format, if a dedicated demodulation reference signal used to demodulate data is preconfigured by the network side for the terminal and respective codewords correspond to the same number of layers; and the indication information is carried in a control bit in the DCI format, if the dedicated demodulation reference signal used to demodulate data is not preconfigured by the network side for the terminal; and sending the generated control information to the terminal.