Method, device and system for transmitting and receiving signals

Abstract

The invention provides a method for sending and receiving signals, which can improve the performance of terminal equipment. The method comprises the steps of enabling the terminal equipment to receiveat least one piece of resource configuration information, wherein the at least one piece of resource configuration information is used for determining N reference signal resource groups, and each reference signal resource group in the N reference signal resource groups comprises at least one reference signal resource; Sending reference signals on the resources of the ith reference signal resourcegroup by adopting the jth antenna group corresponding to the ith reference signal resource group in the N reference signal resource groups, the jth antenna group comprising at least one antenna; Wherein the first type of time units occupied by any two reference signal resource groups in the N reference signal resource groups are different; wherein the N reference signal resource groups correspondto N antenna groups, any two antenna groups in the N antenna groups are different, i is greater than or equal to 1 and less than or equal to N, j is greater than or equal to 1 and less than or equalto N, i and j are integers, and N is an integer greater than or equal to 2.

Description

technical field [0001] The present application relates to the field of wireless communications, and more particularly, to methods, devices and systems for transmitting and receiving signals. Background technique [0002] A sounding reference signal (sounding reference signal, SRS) is a reference signal used for measuring an uplink channel. The network device may perform uplink channel measurement based on the SRS sent by the terminal device, so as to obtain channel state information (channel state information, CSI) of the uplink channel, so as to schedule uplink resources. [0003] In some cases, the terminal device needs to send the SRS by means of antenna switching. For example, in some systems featuring channel reciprocity, the network device can estimate the CSI of the downlink channel through the CSI of the uplink channel obtained through uplink channel measurement, so as to schedule downlink resources. However, if the number of uplink antennas configured by the termi...

AI Technical Summary

Problems solved by technology

[0004] At present, there is a known method in which the terminal device can calculate the antennas that need to be switched based on each transmission opportunity of the reference signal. However, this method is strongly related to the transmission period of the reference signal and has certain limitations.

For example, in some systems, such as 5G's new generation access technology (New Radio Access technology, NR), the transmission of some SRS is not based on the period, and the terminal device cannot determine the antenna to be switched according to the transmission period. Antenna switching is not possible

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