Abstract: Carrier aggregation allows concurrent transmission on multiple component carriers (CC) to increase the data rate. A user equipment (UE) device in a cellular network provides periodic or aperiodic channel state information of the DL channel to a base station (eNB) for each of the aggregated CCs. The UE receives two or more reference signals corresponding to two or more aggregated CCs from an eNB. The UE computes a plurality of channel state information (CSI) reports for each of two or more aggregated CCs derived from the two or more reference signals. The UE receives a positive CSI request from the eNB for a CSI report and transmits CSI feedback to the eNB comprising one or more CSI reports selected from the plurality of CSI reports.

Abstract: The present application can provide an uplink transmission method and apparatus. The method comprises: a base station instructs a UE to send SRSs corresponding to N groups of SRS resources, each of the N groups of SRS resources comprising one or more SRS resources; N being a positive integer; the base station receives the SRSs sent by the UE to determine X groups of uplink scheduling information, each of the X groups of uplink scheduling information corresponding to one group of SRS resources in the N groups of SRS resources; uplink scheduling information in different groups corresponding to SRS resources in different groups; X being a positive integer greater than one and not greater than N; the base station sends the determined X groups of uplink scheduling information to the UE so that the UE transmits an uplink signal according to the X groups of uplink scheduling information.

Abstract: Provided are an array selection method, a terminal, a network device, and a storage medium. The method comprises: sending assistance information to a network device, wherein the assistance information comprises at least one of the following: identifier information of an optimal reference signal required for uplink transmission, and an array-based maximum power reduction (P-MPR) value corresponding to one or more arrays of a terminal when a maximum power exposure (MPE) event occurs; and receiving indication information sent by the network device on the basis of the assistance information, wherein the indication information is used for indicating an array used by the terminal for subsequent uplink transmission, or for indicating that the terminal performs new uplink beam scanning. The embodiments of the present application avoid the uplink coverage loss caused by an MPE issue.

Abstract: Provided in the embodiments of the present disclosure are a cell handover method and apparatus, and a UE, a base station and a storage medium. The method includes performing cell measurement on all cells on the basis of channel state information reference signal (CSI-RS) resource sets corresponding to cells; and sending a measurement result of at least one cell among all the cells to a base station of a current cell, and the base station of the current cell performs cell handover determination on the basis of the received measurement result of the at least one cell. By means of the method and apparatus, and the UE, the base station and the storage medium provided in the embodiments of the present disclosure.

Abstract: A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.

Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

Abstract: The embodiments of the present application provide a method for processing a message and apparatus, a terminal device, a network device and a storage medium. The method comprises: transmitting a first signal to a network device, the first signal being used for indicating first index information of a link in which a beam failure occurs. By means of the present application, a terminal device can determine which link's serving beam a network device changes, thereby recovering the transmission of a single link in time when a beam failure occurs therein.

Abstract: A beam indication method includes: receiving a beam indication message from a base station, in which the beam indication message includes a first transmission configuration indication (TCI) state ID; obtaining a first TCI state corresponding to the first TCI state ID from a TCI state pool, in which an information field of the first TCI state at most includes two groups of source RS information for indicating beam directions; and determining a beam direction corresponding to an uplink channel and/or a downlink channel based on the source RS information for indicating beam directions.

Abstract: Disclosed are a codebook constraint and codebook parameter determination method and apparatus, and same are used for preventing the generation of a beam with an orientation bringing about interference, and to prevent interference. The codebook constraint method includes determining codebook sub-set constraint indication information for indicating that one or more beam groups in a candidate combination beam set are constrained and coefficients in a first coefficient set corresponding to each beam of the beam groups are constrained, and sending the codebook sub-set constraint indication information to a terminal.

Abstract: Embodiments of the present disclosure provide an uplink transmission characteristics confirmation method, includes: obtaining, by a terminal, first information, wherein the first information includes information reported by the terminal to a network side device or information received by the terminal from the network side device; determining uplink transmission characteristic of the terminal, wherein the uplink transmission characteristic is an antenna panel for the uplink transmission determined by terminal according to the first information, or the uplink transmission characteristic is determined by the terminal according to the first information and second information, and the second information includes panel relationship information of the terminal.

Abstract: Disclosed are a method and apparatus for transmitting an initial access signal, thus solving the existing problem wherein transmitting and detecting of synchronization signals cannot be applied to large-scale network coverage of a future communication system. The method comprises: determining at least one to-be-transmitted identification information of a synchronization block, the synchronization block comprising at least two components for transmitting an initial access signal, and different components occupying different time-frequency resources of the synchronization block; determining an initial access signal transmitted by each component in the synchronization block according to the identification information; and determining a time-frequency resource occupied by each component in the synchronization block and transmitting the initial access signal of the component on the time-frequency resource occupied by each component.

Abstract: The present disclosure provides an interference measurement method, a UE and a network side device. The interference measurement method includes: receiving, by the UE, configuration information about an interference measurement reference signal resource and an interference measurement parameter from a network side device; receiving, by the UE, an interference measurement reference signal on the interference measurement reference signal resource based on the configuration information; and calculating, by the UE, an interference estimation value of an interference signal based on the interference measurement parameter and the interference measurement reference signal.

Abstract: The present application relates to the field of radio communication and relates to a CSI measurement reporting method, a terminal, and a network-side device. The terminal of the embodiments of the present application determines an antenna port parameter on the basis of a preset rule or configuration information of the network-side device; receives and measures, on the basis of the antenna port parameter determined, a CSI reference signal in at least one resource unit configured by the network-side device; generates, on the basis of the measurement result from measuring the CSI reference signal in the at least one resource unit, a reporting parameter value and reports same to the network-side device.

Abstract: The present disclosure provides an interference measurement method, a UE and a network side device. The interference measurement method includes: receiving, by the UE, configuration information about an interference measurement reference signal resource and an interference measurement parameter from a network side device; receiving, by the UE, an interference measurement reference signal on the interference measurement reference signal resource based on the configuration information; and calculating, by the UE, an interference estimation value of an interference signal based on the interference measurement parameter and the interference measurement reference signal.

Abstract: A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.

Abstract: A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including modulated symbols, precodes the data stream via multiplication with the NT-by-N precoding matrix where N is the number of said layers and NT is the number of transmit antenna elements and transmits the precoded layers of data stream to the user equipment via the selected geographically separated antennas. The base station signals the subset of the plurality of geographically separated antennas via higher layer Radio Resource Control or via a down link grant mechanism. The base station optionally does not signal the subset of the plurality of geographically separated antennas to the corresponding mobile user equipment.

Abstract: A method and a device for accessing a system information area or a network area are provided. The method includes: receiving, by a terminal, at least one initial access signal (IAS) transmitted from the system information area or the network area; and obtaining, by the terminal, one or more of a subframe boundary, a system bandwidth, a starting frequency and an ending frequency of the system information area or the network area based on the received IAS.

Abstract: Disclosed are a beam determination apparatus, a UE and a network device. A beam determination method performed by the UE includes: determining, by the UE, whether a common beam state is a valid state; and in case that the common beam state is the valid state, determining, by the UE, that at least two channels and/or reference signals of the UE use the same beam for transmission.

Abstract: A method for monitoring control channels and determining a transmission configuration indication, and a terminal. In the present application, a terminal determines, according to first information, at least two CORESETs or search space sets having at least two QCL-TypeD properties, or determines, according to a control channel transmission pattern, at least two CORESETs or search space sets having an association relationship, and monitors at least two control channels according to the determined CORESETs or search space sets.

Abstract: Provided in the embodiments of the present application are a signal transmission method and apparatus, and a device and a storage medium. The method includes: configuring first information for a second device, where the first information is used to indicate a time-domain transmission location of a signal corresponding to a first signal resource and/or a first signal resource set; and sending the first information to the second device by means of signaling. Therefore, according to the embodiments of the present application, a second device performs corresponding signal transmission on the basis of the flexible scheduling of a first device, to improve the signal transmission reliability and flexibility.