Wireless communication method and wireless communication device

Abstract

A wireless communication method and a wireless communication device. The method comprises: a sending side device generating a common sequence so as to send to a plurality of receiving side devices; each of the plurality of receiving side devices determining a first analogue weight parameter according to a receiving situation of the common sequence, and determining an antenna configuration for sending a pre-determined pilot frequency signal corresponding to the receiving side device according to the determined first analogue weight parameter so as to send the pre-determined pilot frequency signal to the sending side device; and the sending side device determining a second analogue weight parameter regarding the receiving side device according to a receiving situation of the pre-determined pilot frequency signal, and determining an antenna configuration for sending data regarding the receiving side device according to the determined second analogue weight parameter so as to send the data to the receiving side device.

1 . A Base Station (BS) in a communication system, comprising
 a plurality of antennas,   a plurality of phase shifters,   a plurality of radio frequency (RF) chains, and   one or more processors configured to:   provide one or more control instructions for one or more User Equipment (UE) in the communication system,   control to receive uplink reference signals from the one or more UE with a plurality of BS receiving beams, and   determine a BS receiving beam for each UE based on a criterion of maximizing received signal power or a criterion of maximizing Signal-to-Interference Ratio,   wherein each BS receiving beam is formed based on a value pattern of the plurality of phase shifters for analog beamforming configured by the one or more processors,   wherein the one or more control instructions includes at least one of an indication of time of transmitting the uplink reference signal or an indication of a number of times for transmitting the uplink reference signal.   
     
     
         2 . The BS according to  claim 1 , wherein the one or more processors are configured to control to transmit downlink reference signals to the one or more UE, each UE determining a UE transmitting beam based on the downlink reference signals transmitted from the BS,
 wherein the one or more control instructions includes at least one of an indication of time of transmitting the downlink reference signal or an indication of a number of times for transmitting the downlink reference signal.   
     
     
         3 . The BS according to  claim 1 , wherein the one or more processors are configured to estimate, a channel between a UE that is among the one or more UE and the BS, seen from the BS receiving beam corresponding to the UE,
 determine a digital precoding matrix according to the estimated channel, and   precode a data signal for the UE with the digital precoding matrix.   
     
     
         4 . The BS according to  claim 1 , wherein a number of the plurality of RF chains is K which is an integer greater than 1, the one or more processors are configured to, for K UE among the one or more UE, estimate a channel between each UE and the BS seen from the BS receiving beam corresponding to the UE,
 determine a digital precoding matrix according to the estimated channels of the K UE, and   precode K data signals respectively for the K UE with the digital precoding matrix.   
     
     
         5 . The BS according to  claim 3 , wherein the one or more processors are configured to
 determine a BS transmitting beam according to the BS receiving beam,   control to form the BS transmitting beam with the value pattern of the plurality pf phase shifters corresponding to the BS receiving beam, and   control to transmit the precoded data signal to the UE with the BS transmitting beam for the UE.   
     
     
         6 . The BS according to  claim 4 , wherein the one or more processors are configured to
 determine a respective BS transmitting beam according to each BS receiving beam,   control to form K BS transmitting beams with the K value patterns of the plurality pf phase shifters corresponding to the K BS receiving beams, and   control to transmit the precoded data signals to the K UE with the K BS transmitting beams for the respective UE.   
     
     
         7 . The BS according to  claim 1 , wherein the one or more processors are configured to determine the number of times for transmitting the uplink reference signal based on at least one of a number of BS receiving beams that can be formed by the BS or a number of RF chains of the BS. 
     
     
         8 . The BS according to  claim 1 , wherein the downlink reference signal is channel state information reference signal (CSI-RS), and the uplink reference signal is sounding reference signal (SRS). 
     
     
         9 . The BS according to  claim 1 , wherein each of the plurality of RF chains are connected to each of the plurality of antennas via a corresponding subset of the plurality of phase shifters. 
     
     
         10 . The BS according to  claim 1 , wherein each of the plurality of RF chains are connected to a subset of the plurality of antennas via a corresponding subset of the plurality of phase shifters. 
     
     
         11 . The BS according to  claim 4 , wherein the uplink reference signals from the K UE are orthogonal to each other in terms of training sequence included in the uplink reference signals and/or transmission resources thereof. 
     
     
         12 . An electronic device for user equipment (UE) in a communication system, comprising
 circuitry configured to:   receive one or more control instructions from a base station (BS) in the communication system, and   based on the control instructions, control to repeatedly transmit uplink reference signals to the BS for the BS to receive with a plurality of BS receiving beams,   wherein a BS receiving beam for the UE is determined by the BS based on a criterion of maximizing received signal power or a criterion of maximizing Signal-to-Interference Ratio,   wherein the BS receiving beam is formed based on a value pattern of a plurality of phase shifters of the BS for analog beamforming,   wherein the one or more control instructions includes at least one of an indication of time of transmitting the uplink reference signal or an indication of a number of times for transmitting the uplink reference signal.   
     
     
         13 . The electronic device according to  claim 12 , wherein the circuitry is configured to control to receive downlink reference signals from the BS, and determine a UE receiving beam based on a criterion of maximizing received signal power or a criterion of maximizing Signal-to-Interference Ratio,
 wherein the one or more control instructions includes at least one of an indication of time of transmitting the downlink reference signal or an indication of a number of times for transmitting the downlink reference signal.   
     
     
         14 . The electronic device according to  claim 13 , wherein the circuitry is configured to determine a UE transmitting beam corresponding to the UE receiving beam which is formed based on a value pattern of a plurality of phase shifters at the UE for analog beamforming. 
     
     
         15 . The electronic device according to  claim 14 , wherein the circuitry is configured to control to form the UE transmitting beam and to transmit uplink reference signals repeatedly with the UE transmitting beam to the BS. 
     
     
         16 . The electronic device according to  claim 12 , wherein the downlink reference signal is channel state information reference signal (CSI-RS), and the uplink reference signal is sounding reference signal (SRS). 
     
     
         17 . The electronic device according to  claim 12 , wherein the electronic device is implemented as the UE and further comprises a plurality of antennas, a plurality of phase shifters and a plurality of radio frequency (FR) chains, each of the plurality of RF chains are connected to each of the plurality of antennas via a corresponding subset of the plurality of phase shifters. 
     
     
         18 . The electronic device according to  claim 12 , wherein the electronic device is implemented as the UE and further comprises a plurality of antennas, a plurality of phase shifters and a plurality of radio frequency (FR) chains, each of the plurality of RF chains are connected to a subset of the plurality of antennas via a corresponding subset of the plurality of phase shifters. 
     
     
         19 . A communication method for a Base Station (BS) in a communication system, comprising
 providing one or more control instructions for one or more User Equipment (UE) in the communication system,   controlling to receive uplink reference signals from the one or more UE with a plurality of BS receiving beams, and   determining a BS receiving beam for each UE based on a criterion of maximizing received signal power or a criterion of maximizing Signal-to-Interference Ratio,   wherein each BS receiving beam is formed based on a value pattern of a plurality of phase shifters for analog beamforming,   wherein the one or more control instructions includes at least one of an indication of time of transmitting the uplink reference signal or an indication of a number of times for transmitting the uplink reference signal.   
     
     
         20 . A communication method for a user equipment (UE) in a communication system, comprising
 receiving one or more control instructions from a base station (BS) in the communication system, and   based on the control instructions, controlling to repeatedly transmit uplink reference signals to the BS for the BS to receive with a plurality of BS receiving beams,   wherein a BS receiving beam for the UE is determined by the BS based on a criterion of maximizing received signal power or a criterion of maximizing Signal-to-Interference Ratio,   wherein the BS receiving beam is formed based on a value pattern of a plurality of phase shifters of the BS for analog beamforming,   wherein the one or more control instructions includes at least one of an indication of time of transmitting the uplink reference signal or an indication of a number of times for transmitting the uplink reference signal.