Abstract: A method for indicating precoding information, user equipment (UE) and an access network entity are provided according to the disclosure. The method includes: receiving, by a user equipment (UE), a control signaling transmitted by an access network entity; determining, by the UE, a multilevel codebook index in response to the control signaling; and determining, by the UE, a target precoding matrix based on the multilevel codebook index and a multilevel codebook obtained in advance.

Abstract: A method for transmitting a phase noise compensation reference signal, a transmission device and a reception device are provided. The method includes: determining one or more configurations from N configurations for a transmission resource of the phase noise compensation reference signal; and transmitting the phase noise compensation reference signal according to the one or more configurations. The N configurations have different time-domain densities or different frequency-domain densities, or a plurality of configurations of the N configurations has a same time-domain density and a same frequency-domain density, where N is an integer greater than or equal to 2.

Abstract: A data transmission method and a data transmission device are provided. The method includes: receiving first indication information sent by a network side device, the first indication information is used to instruct the UE to send a first signal; and determining actual first uplink transmission characteristic of the first signal when valid first uplink transmission characteristic of the first signal is not obtained, and sending the first signal through the actual first uplink transmission characteristic, or not sending the first signal when valid first uplink transmission characteristic of the first signal is not obtained.

Abstract: A signal transmission method and device are provided. The method includes: determining a codebook C being a set of matrices W; determining a matrix set ?={W}?C from the codebook C; generating one or more layers of signals, beamforming the signals with matrixes in the matrix set ?, and cyclically mapping the matrixes in the matrix set ? to different locations of transmission resources; and transmitting the beamformed signals at the different locations of the transmission resources.

Abstract: A beam control method, a base station and a user equipment are provided. The method includes: determining, by a base station, a type of a physical channel; and transmitting or receiving, by the base station, a signal of the physical channel by using a corresponding type of beam according to the type of the physical channel.

Abstract: An uplink data transmission method, a terminal, and a network side device are provided. The method includes: receiving, by a terminal, N uplink sounding pilot indices transmitted by a network side device, wherein N is a positive integer larger than 0; and transmitting, by the terminal, uplink data to the network side device in N uplink beam directions corresponding to the N uplink sounding pilot indices.

Abstract: The present disclosure provides a reference signal transmission method, a transmitter and a receiver. The reference signal transmission method includes: precoding, by a transmitter, a data stream for user data through a second precoding matrix so as to acquire D virtual data streams; precoding, by the transmitter, the D virtual data streams through a first precoding matrix, and transmitting the D precoded virtual data streams to a receiver via T antenna groups, each antenna group including one or more antenna units or antenna ports having a same phase noise; transmitting, by the transmitter, D demodulation reference signals to the receiver; and transmitting, by the transmitter, M phase-tracking reference signals to the receiver, the M phase-tracking reference signals being adopted to track phase changes in the T antenna groups caused by one or more phase noise sources.

Abstract: A data transmission method, a base station, and a terminal are provided. The method corresponding to the base station includes sending SRS resource configuration information for uplink channel quality measurement and configuration information of a transmission layer quantity, wherein the configuration information of the transmission layer quantity includes a set of maximum quantities of transmission layers allowed to be transmitted by a terminal or the quantity of layers allowed to be transmitted by the terminal; determining uplink transmission indication information; determining a payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity; sending the uplink transmission indication information to the terminal using the payload.

Abstract: The beam processing method for use in the base station includes: transmitting a first downlink transmission beam training signal to a UE, and receiving first recommended beam-related information reported by the UE in accordance with the first downlink transmission beam training signal; transmitting a second downlink transmission beam training signal to the UE, and receiving second recommended beam-related information reported by the UE in accordance with the second downlink transmission beam training signal; determining a target downlink transmission beam in accordance with the first recommended beam-related information and the second recommended beam-related information; and performing a switching operation on one or more currently-adopted valid downlink transmission beams in accordance with the target downlink transmission beam.

Abstract: The embodiments of the present disclosure provide a method and a device for constraining a codebook subset. The method includes steps of: determining codebook subset constraint parameters for all or parts of matrix sets for constructing a codebook respectively, each codebook subset constraint parameter indicating an available matrix in a corresponding matrix set; and transmitting the determined codebook subset constraint parameters to a UE. The number of the matrices in each matrix set for constructing the codebook is far less than the number of precoding matrices in the codebook.

Abstract: The present application provides a method and a device for transmitting feedback information. The method includes: determining, by a transmitting terminal, a first code book in accordance with a channel measurement result, precoding matrices included in the first code book being obtained through transformation of a same construction matrix; calculating, by the transmitting terminal, to obtain a first CQI in accordance with all or part of the precoding matrices in the first code book; and transmitting, by the transmitting terminal, first indication information for indicating the first code book and second indication information for indicating the first CQI to a receiving terminal.

Abstract: A beam scanning and search tracking method and device are provided. The method includes constructing analog beams and performing digital beam-forming to the analog beams so as to form equivalent beams; transmitting reference signals to a second communication node by using the equivalent beams; receiving beam information about the equivalent beams and corresponding channel state information fed back by the second communication node according to the reference signals; performing a beam scanning operation and a search tracking operation by using the beam information and the channel state information.

Abstract: The present disclosure provides a reference signal transmission method, a reference signal transmission device, a base station and a user equipment. The transmission method of the present disclosure includes: implicitly or explicitly indicating to a user equipment (UE), position information of a target subcarrier for mapping a target phase tracking reference signal (PTRS) port, among subcarriers occupied by a target demodulation reference signal (DMRS) port. The target DMRS port is a DMRS port associated with the target PTRS port.

Abstract: A method, an apparatus, and an electronic device of determining beam reciprocity of a device, and a computer readable storage medium are provided. The method includes: instructing a second device to transmit, by using a transmission beam obtained based on beam reciprocity, a reference signal; receiving the reference signal transmitted by the second device, and calculating a reception quality of the reference signal; receiving a plurality of beam training signals transmitted by the second device, and calculating reception qualities of the plurality of beam training signals, respectively; comparing the reception quality of the reference signal with a reference reception quality obtained based on the reception qualities of the plurality of beam training signals, and determining, based on a result of the comparison, whether the beam reciprocity of the second device is established or not.

Abstract: A method for determining a bundling size, user equipment and a network-side device are provided The method includes: reporting, by user equipment, capability information to a network-side device, where the capability information is used to indicate whether the user equipment supports one-physical resource block bundling, and receiving a bundling size set configured by the network-side device for the user equipment according to the capability information, where supporting the one-physical resource block bundling indicates that a turn-off of a physical resource block bundling function is supported; and/or using, by the user equipment, a default bundling size or a bundling size configured via a higher-layer signaling to transmit data if the network-side device turns off a function of dynamic bundling size adjustment.

Abstract: An uplink transmission method, an uplink transmission configuration method, a UE and a base station are provided. The uplink transmission method applied for the UE includes: acquiring configuration information about one or more uplink reference signal resources configured by the base station for the UE; transmitting one or more uplink reference signals based on the configuration information about the one or more uplink reference signal resources; receiving indication information about uplink transmission determined by the base station; and performing the uplink transmission based on the indication information.

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 reference signal mapping method and a reference signal mapping device are provided. The reference signal mapping method includes steps of: determining a position of a RE to which a CSI-RS has been mapped in accordance with an N-port reference signal pattern, N being equal to 12 or 16; and performing a resource mapping operation on the CSI-RS in accordance with the determined position of the RE. The position of the RE to which the CSI-RS has been mapped in the N-port reference signal pattern being determined in accordance with a position of the RE to which the CSI-RS has been mapped in one or more of a 2-port reference signal pattern, a 4-port reference signal pattern and an 8-port reference signal pattern. As a result, it is able to achieve the 12-port or 16-port CSI-RS mapping, thereby to achieve the 12-port or 16-port CSI-RS transmission.

Abstract: A channel state information receiving method, a channel state information feedback method, a device, a base station and a terminal are provided. It is related to telecommunication field. The receiving method includes: obtaining group identifiers of groups into which multiple terminals having accessed to a base station are classified; transmitting a triggering signaling to one group of terminals having an identical group identifier; and receiving, on a pre-configured resource block, pieces of channel state information respectively fed back by the group of terminals having the identical group identifier in response to the triggering signaling. With the above technical solution, consumption of downlink signalings of the base station can be reduced and feedback efficiency of channel state information can be improved.

Abstract: A method and a device for determining a CSI-RS transmission resource are provided. The method includes: acquiring, by a UE, uplink/downlink subframe configuration information for determining a position of a CSI-RS resource; determining, by the UE, a type of a subframe within which the CSI-RS is to be transmitted in accordance with the uplink/downlink subframe configuration information; and determining, by the UE, the position of the CSI-RS resource within the subframe within which the CSI-RS is to be transmitted in accordance with the determined type of the subframe.