A signal processing method includes: receiving by a terminal device, first precoding indication information, where the first precoding indication information is used for indicating related information for precoding a data signal; and processing, by the terminal device, a received data signal based on the first precoding indication information. And another signal processing method, a terminal device, a network device and a storage medium are provided.

Precoding matrix computations for a large number of antenna arrays can be used to generate efficiencies within a wireless network. Utilizing network topology and context data in conjunction with known available network resources and mobile device measurements can facilitate gains in power and spectral efficiency and reduction in computation complexity posed by current procedures. To take advantage of multiple paths, the precoding matrix can be known at the radio units for each mobile device.

Herein is disclosed a beam estimation system comprising one or more transceivers, configured to transmit a plurality of first-stage reference beams, and to receive a first quality identifier corresponding to a first first-stage reference beam with a strongest signal strength and a second quality identifier corresponding to a second first-stage reference beam with a second strongest signal strength; and one or more processors, configured to determine a second-stage reference beam region based on the first quality identifier and the second quality identifier.

One example method includes receiving, by a terminal, indication information sent by a base station, where the indication information indicates a precoding matrix in a first precoding matrix set and a transmission rank corresponding to the precoding matrix, and the precoding matrix is used to precode transmit data streams at r transmission layers to obtain signals to be sent on N transmission ports of the terminal; and when r>1, a nonscalar part of a precoding matrix whose transmission rank is r in the first precoding matrix set is obtained by combining columns in nonscalar parts of r precoding matrices, and the r precoding matrices are precoding matrices selected from all precoding matrices whose transmission ranks are 1; and determining, by the terminal based on the indication information, the precoding matrix for precoding the transmit data streams.

A communication system and an operating method thereof are for single carrier wideband hybrid beamforming based on limited feedback. A transmitter having a plurality of Tx antennas may be configured to receive limited channel information from at least one receiver each having at least one Rx antenna, schedule a RF beam for at least one stream in the receiver using the limited channel information, and perform baseband beamforming based on the RF beam.

Disclosed by the present invention are a method, a network side device and a terminal for indicating a pilot precoding mode, wherein the method comprises: The network side device assigns at least one group of pilots to the terminal, wherein each group of pilots comprises at least one pilot. The network side device determines pilot precoding indication information for the at least one group of pilots, wherein the pilot precoding indication information is used to characterize whether each pilot in each group of pilots uses the same precoding matrix. The network side device sends the at least one group of pilots and the pilot precoding indication information to the terminal. The present invention may solve the technical problem not disclosed in prior art of a solution for how a base station or a terminal specifically indicates a pilot precoding mode, so as to improve the control efficiency of a network side device.

Aspects described herein relate to power control for uplink beam sweep. In one aspect, a network entity may determine a beam sweep pattern including one or more beams for a user equipment (UE), the beam sweep pattern associated with transmission on at least one of a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH). The network entity may also transmit an indication including the one or more beams for the beam sweep pattern to the UE. In another aspect, a UE may receive an indication including a beam sweep pattern including one or more beams for transmission on at least one of a PUSCH or a PUCCH. The UE may perform beam sweep using one or more beams on at least one of the PUSCH or the PUCCH based on the beam sweep pattern.

The disclosure relates to a channel access method and apparatus in a wireless communication system. In the method according to an embodiment of the disclosure, a user equipment (UE) may receive configuration information related to a beam used in an unlicensed spectrum and configuration information related to transmission of a synchronization signal block from a base station, determine a threshold value used for a channel access procedure based on the configuration information received from the base station, and transmit a signal through the unlicensed spectrum according to whether the unlicensed spectrum is in an idle state, determined based on the determined threshold value.

A device comprises antennas and a signal processor, and each antenna comprises antenna elements. The signal processor is configured to: receive an input signal for a multiple-input multiple-output (MIMO) operation; generate complex weights; generate feed signals based on the input signal and the complex weights; and provide the feed signals to the antenna elements so that the MIMO operation uses at least two antenna elements from two different antennas.

A method and apparatus in a wireless communication device is provided. A reference signal is received from a network entity, and a default set of individual beams is defined, each of the beams having an associated direction. A compression matrix is determined, and an indication of the determined compression matrix is sent to the network entity. The compression matrix is applied to the default set of individual beams resulting in a new set of composite beams, where at least one of the composite beams includes a combination of multiple individual beams from the default set, and where the multiple individual beams included in the at least one of the composite beams each extend in a different direction. A set of beam weighting values is determined, and the determined set of beam weighting values is sent to the network entity.