CN-122002509-A - Communication method and device

Abstract

A communication method and device belong to the technical field of communication. The method includes receiving first information indicating that a first synchronization signal block, SSB, and at least one second SSB are quasi co-sited, QCL, the first SSB being of a different type than the second SSB. Based on the above, the first information may indicate that QCL is between the first SSB and the at least one second SSB. In this way, the terminal side may measure only one SSB of the first SSB or the at least one second SSB and determine channel characteristics of the unmeasured or SSBs according to the QCL relationship. In the scheme, the terminal side does not need to measure the first SSB and at least one second SSB, so that the energy consumption of the terminal side is reduced.

Inventors

• YU XICHEN
• HUANG XIUXUAN
• Louis Madier
• DING MENGYING
• PENG JINLIN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A method of communication, comprising: First information is received, wherein the first information is used for indicating that a first synchronization signal block SSB and at least one second SSB are quasi co-located QCL, and the type of the first SSB is different from the type of the second SSB.
2. 2. The method of claim 1, wherein the first SSB is an on-demand SSB and the second SSB is a continuously transmitted SSB.
3. 3. The method of claim 1 or 2, wherein the index of the first SSB and the index of the second SSB are different.
4. 4. A method according to any one of claims 1 to 3, wherein the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are different.
5. 5. The method according to any one of claims 1 to 4, further comprising: Second information is received, the second information indicating that a QCL relationship between the first SSB and the second SSB is of a first type.
6. 6. The method according to any one of claims 1 to 5, wherein prior to said receiving first information, the method further comprises: Receiving third information indicating that QCL is between the first SSB and at least one third SSB, the at least one third SSB being different from the at least one second SSB; wherein after said receiving the first information, the method further comprises: and determining SSB meeting QCL relation with the first SSB as the at least one second SSB according to the first information.
7. 7. The method according to any of claims 1 to 6, wherein the first information is carried in a radio resource control, RRC, message, medium access control, MAC, control element, CE, or downlink control information, DCI.
8. 8. A method of communication, comprising: and transmitting first information, wherein the first information is used for indicating that the first synchronization signal block SSB and at least one second SSB are quasi co-located QCL, and the type of the first SSB is different from the type of the second SSB.
9. 9. The method of claim 8, wherein the first SSB is an on-demand SSB and the second SSB is a continuously transmitted SSB.
10. 10. The method of claim 8 or 9, wherein the index of the first SSB and the index of the second SSB are different.
11. 11. The method according to any one of claims 8 to 10, wherein the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are different.
12. 12. The method according to any one of claims 8 to 11, further comprising: and sending second information, wherein the second information is used for indicating that the QCL relationship between the first SSB and the second SSB is of a first type.
13. 13. The method according to any one of claims 8 to 12, wherein prior to said transmitting the first information, the method further comprises: Third information is transmitted, the third information indicating that QCL is present between the first SSB and at least one third SSB, the at least one third SSB being different from the at least one second SSB.
14. 14. The method according to any of the claims 8 to 13, characterized in that the first information is carried in a radio resource control, RRC, message, a medium access control, MAC, control element, CE, or downlink control information, DCI.
15. 15. A communication device comprising at least one module or at least one unit for performing the method of any one of claims 1 to 14.
16. 16. A communication device comprising at least one processor configured to cause the method of any one of claims 1 to 14 to be performed by execution of a computer program or instructions.
17. 17. The communication apparatus according to claim 16, further comprising a memory for storing the computer program or the instructions.
18. 18. A computer readable storage medium, having stored thereon a computer program or instructions which, when executed, cause the method of any of claims 1 to 14 to be performed.
19. 19. A computer program product comprising a computer program or instructions which, when executed, implement the method of any one of claims 1 to 14.
20. 20. A communication system comprising a terminal side for performing the method of any of claims 1 to 7 and a network side for performing the method of any of claims 8 to 14.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus. Background The terminal device can continuously perform cell search and measurement based on a synchronous signal block (synchronization signal block, SSB) when moving, and select a proper SSB wave beam, thereby realizing initial access and mobility management of the terminal device. The above SSB may also be referred to as always-on (AO) SSB. Furthermore, in the event that there is no need for the terminal device and/or the network device, the network device may not transmit another SSB within the cell (e.g., secondary cell). In case there is a need for a terminal device and/or a network device, the network device may send the above SSB within a cell. The above SSB may also be referred to as an on-demand (OD) SSB. However, the terminal device needs to measure the above two SSBs separately, thereby increasing the power consumption of the terminal device. Therefore, how to reduce the power consumption of the terminal device is a problem to be solved. Disclosure of Invention The application provides a communication method and a communication device, which ensure that a terminal side does not need to measure two SSBs by configuring quasi co-location (QCS-colocation, QCL) relations of SSBs of different types on a network side, thereby reducing the energy consumption of the terminal side. In a first aspect, a method of communication is provided. The main execution body of the method provided in the first aspect may be a terminal side, and the terminal side in the present application may be a terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of implementing all or part of functions of the terminal device, etc., without specific description. For convenience of description, description will be made below taking an example in which the execution subject is the terminal side. The method includes receiving first information indicating that a first synchronization signal block, SSB, and at least one second SSB are quasi co-sited, QCL, the first SSB being of a different type than the second SSB. Based on the above, the first information may indicate that QCL is between the first SSB and the at least one second SSB. In this way, the terminal side may measure only one SSB of the first SSB or the at least one second SSB and determine channel characteristics of the unmeasured or SSBs according to the QCL relationship. In the scheme, the terminal side does not need to measure the first SSB and at least one second SSB, so that the energy consumption of the terminal side is reduced. In some implementations, the first SSB is an on-demand SSB and the second SSB is a continuously transmitted SSB. In some implementations, the index of the first SSB and the index of the second SSB are different. Based on the above scheme, the QCL relationship between the first SSB and the second SSB may be decoupled from whether the index is the same. The above scheme may provide QCL relationships between SSBs having different indexes, compared to a scheme in which QCL relationships are possible between SSBs having the same index, thereby achieving flexible configuration of QCL relationships. In some implementations, the frequency corresponding to the first SSB and the frequency corresponding to the second SSB are different. Based on the above scheme, the QCL relationship between the first SSB and the second SSB may be decoupled from whether the frequencies are the same. Compared with a scheme that SSBs with the same frequency can only have a QCL relationship, the scheme can provide that SSBs corresponding to different frequencies have the QCL relationship, so that flexible configuration of QCL jurisdiction is realized. In some implementations, the method further includes receiving second information indicating that the QCL relationship between the first SSB and the second SSB is of the first type. Based on the above scheme, the terminal side can determine the type of QCL relationship between the first SSB and the second SSB through the second information, thereby determining the same channel characteristics corresponding to the first SSB and the second SSB. The terminal side does not need to measure the first SSB and the second SSB, but can multiplex the measured same channel characteristics, thereby reducing the energy consumption of the terminal side. In some implementations, before the receiving the first information, the method further includes receiving third information indicating that the first SSB and at least one third SSB are QCL, the at least one third SSB being different from the at least one second SSB, wherein after the receiving the first information, the method further includes determining that SSB satisfying the QCL relationship with the first SSB is