CN115152174A

CN115152174A - A communication method and device

Info

Publication number: CN115152174A
Application number: CN202080097288.2A
Authority: CN
Inventors: 刘显达; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2022-10-04
Anticipated expiration: 2040-02-21
Also published as: WO2021164023A1; CN115152174B

Abstract

The present application discloses a communication method and device for improving data transmission performance. Based on the present application, the network device may configure the terminal device with multiple QCL parameters associated with the DMRS port of the first resource. Therefore, on the first resource, the terminal device can obtain an equivalent QCL parameter according to multiple QCL parameters, and the equivalent QCL parameter can accurately reflect the channel state, so as to perform channel estimation on the DMRS port according to the equivalent QCL parameter, and according to the channel The estimated structure performs data reception to improve robustness of data reception on the first resource.

Description

PCT国内申请，说明书已公开。PCT domestic application, the description has been published.

Claims

A method of communication, comprising:

determining first information indicating a plurality of quasi co-located QCL parameters for demodulating reference signal DMRS ports on a first resource;

sending the first information to a terminal device;

and transmitting the DMRS through the DMRS port.
The method of claim 1, wherein said plurality of QCL parameters includes:

a plurality of first QCL parameters; or,

a plurality of first QCL parameters and one or more second QCL parameters.
The method of claim 2, wherein said first QCL parameters include one or more of the following parameters: doppler frequency offset, doppler spread, delay spread, average delay.
The method of claim 2 or 3, wherein said second QCL parameters include spatial receive parameters or spatial receive beamforming parameters.
The method of any of claims 1-4, wherein said first information comprises a Transmission Control Indication (TCI) status information, said TCI status information indicating said plurality of QCL parameters.
The method of claim 5, wherein the method further comprises:

and sending second information to the terminal equipment, wherein the second information is used for indicating the corresponding relation between the TCI state and the QCL parameters, and the TCI state information is used for indicating one TCI state.
The method of claim 5 or 6, wherein the plurality of QCL parameters includes a plurality of first QCL parameters and a plurality of second QCL parameters, the method further comprising:

transmitting third information to the terminal device, the third information indicating a correspondence between the plurality of first QCL parameters and the plurality of second QCL parameters.
The method of any of claims 2-4, wherein the first information comprises a plurality of TCI status information, one of the plurality of TCI status information for indicating one of the plurality of first QCL parameters.
The method of any of claims 2-8, wherein said first information is indicative of one or more first downlink reference signals associated with said plurality of first QCL parameters.
The method of claim 9, wherein at least one of the one or more first downlink reference signals is associated with the one or more second QCL parameters; or,

the first information is used to indicate one or more second downlink reference signals associated with the one or more second QCL parameters.
A method of communication, comprising:

receiving first information from a network device, the first information indicating a plurality of QCL parameters of a DMRS port on a first resource;

and receiving the DMRS through the DMRS port according to the first information.
The method of claim 11, wherein said plurality of QCL parameters includes:

a plurality of first QCL parameters; or,

a plurality of first QCL parameters and one or more second QCL parameters.
The method of claim 12, wherein said first QCL parameters include one or more of the following parameters: doppler frequency offset, doppler spread, delay spread, average delay.
The method of claim 12 or 13, wherein said second QCL parameters comprise spatial receive parameters or spatial receive beamforming parameters.
The method of any of claims 11-14, wherein said first information comprises a TCI status information, said TCI status information indicating said plurality of QCL parameters.
The method of claim 15, wherein the method further comprises:

receiving second information from the network device, where the second information is used to indicate a correspondence between a TCI status and a QCL parameter, and the TCI status information is used to indicate one of the TCI statuses.
The method of claim 15 or 16, wherein the plurality of QCL parameters comprises a plurality of first QCL parameters and a plurality of second QCL parameters, the method further comprising:

transmitting third information to the terminal device, the third information indicating a correspondence between the plurality of first QCL parameters and the plurality of second QCL parameters.
The method of any of claims 12-14, wherein the first information comprises a plurality of TCI status information, one of the plurality of TCI status information for indicating one of the plurality of first QCL parameters.
The method of any of claims 12-18, wherein the first information is indicative of a plurality of first downlink reference signals, the one or more first downlink reference signals being associated with the plurality of first QCL parameters.
The method of claim 19, wherein at least one of the plurality of first downlink reference signals is associated with the one or more second QCL parameters; or,

the first information is used to indicate one or more second downlink reference signals associated with the one or more second QCL parameters.
A communications apparatus, comprising:

a transceiver for the communication device to communicate;

a processor for executing program instructions stored in a memory for performing the method of any of claims 1-10.
A communications apparatus, comprising:

a transceiver for the communication device to communicate;

a processor for executing program instructions stored in a memory to perform the method of any of claims 11-20.
A communication system comprising a communication apparatus according to claim 21 and comprising a communication apparatus according to claim 22.
A computer-readable storage medium comprising program instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-20.
A computer program product, which when executed causes the method of any of claims 1-20 to be implemented.
A chip comprising a processor for executing program instructions stored in a memory to perform the method of any of claims 1-20.