US-12621751-B2 - Wireless communication method, communication apparatus, and communication system

US12621751B2US 12621751 B2US12621751 B2US 12621751B2US-12621751-B2

Abstract

Embodiments of this application provide a wireless communication method, a communication apparatus, and a communication system. In the method, a terminal determines, based on a detected SSB, a first index of the SSB in a first set and a second index of the SSB, and then determines a resource of the SSB. One SSB may correspond to one or more resources, and time division multiplexing may be performed between different resources. Therefore, there is a plurality of sending occasions for one SSB. Each SSB corresponds to one transmit beam direction, so that a sending occasion of an SSB corresponding to a transmit beam direction may be flexibly adjusted. When a plurality of SSBs in one set are sent, a sending sequence of SSBs corresponding to different transmit beam directions may be determined according to a service requirement, to further determine a resource occupied by each SSB.

Inventors

Lei Guan
Shengyu LI

Assignees

HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230830

Claims (20)

1 . An apparatus comprising: at least one processor; and a non-transitory computer readable medium configured to store a program executable by the at least one processor, the program comprising instructions for: detecting a common signal; determining, in response to the detected common signal being a first common signal, a first index of the first common signal in a first set and a second index of the first common signal, wherein the first set comprises a plurality of common signals, the plurality of common signals comprises the first common signal, the first common signal comprises a synchronization signal, the first index corresponds to a plurality of resources, the second index is usable to indicate a resource of the plurality of resources, and the resource comprises a time domain resource or a frequency domain resource; determining the first index or the second index according to a first grouping rule, wherein the plurality of common signals in the first set are grouped into at least one group according to the first grouping rule, each of the at least one group corresponds to one resource set, and the resource set comprises at least one of the plurality of resources corresponding to the first index; and determining the resource of the first common signal based on the first index and the second index or based on the second index.
2 . The apparatus according to claim 1 , wherein each of the plurality of common signals in the first set is capable of being sent at any of a plurality of sending moments corresponding to the first set.
3 . The apparatus according to claim 2 , further comprising: determining, based on a sequence of the synchronization signal, the first grouping rule corresponding to the first set from a plurality of candidate grouping rules; or determining, based on a quantity of the plurality of common signals in one group corresponding to the first set, the first grouping rule corresponding to the first set from the plurality of candidate grouping rules; or determining, based on a time division duplexing configuration, the first grouping rule corresponding to the first set from the plurality of candidate grouping rules.
4 . The apparatus according to claim 1 , wherein the determining the first index comprises: determining the first index based on a sequence of the synchronization signal.
5 . The apparatus according to claim 1 , wherein the determining the first index comprises: determining the first index based on a first channel corresponding to the first common signal, wherein the first channel is: a broadcast channel, a channel carrying system information, or a control channel, and the control channel is usable to schedule the channel carrying the system information.
6 . The apparatus according to claim 5 , wherein the determining the first index comprises: determining the first index based on one or more pieces of information corresponding to the first channel, wherein the information comprises: information indicating the first index, a scrambling code of the first channel, or a demodulation reference signal (DMRS) sequence of the first channel.
7 . The apparatus according to claim 1 , wherein the determining the second index comprises: determining the second index based on a sequence of the synchronization signal.
8 . A wireless communication method, comprising: obtaining a first set, wherein the first set comprises a plurality of common signals, the plurality of common signals comprises a first common signal, the first common signal comprises a synchronization signal, an index of the first common signal in the first set is a first index, the first index corresponds to a plurality of resources, a second index of the first common signal indicates a resource of the plurality of resources, and the resource comprises a time domain resource or a frequency domain resource, wherein the first set corresponds to a first grouping rule, and the first grouping rule is usable to determine the first index or the second index; and the plurality of common signals in the first set are grouped into at least one group according to the first grouping rule, each of the at least one group corresponds to one resource set, and the resource set comprises at least one of the plurality of resources corresponding to the first index; and sending the plurality of common signals in the first set to a terminal.
9 . The method according to claim 8 , wherein each of the plurality of common signals in the first set is capable of being sent at any of a plurality of sending moments corresponding to the first set.
10 . The method according to claim 9 , wherein a sequence of the synchronization signal corresponds to the first grouping rule; or a quantity of the plurality of common signals in one group corresponding to the first set corresponds to the first grouping rule; or a time division duplexing configuration corresponds to the first grouping rule.
11 . The method according to claim 8 , wherein a sequence of the synchronization signal corresponds to the first index.
12 . The method according to claim 8 , wherein a first channel corresponding to the first common signal corresponds to the first index, and the first channel is: a broadcast channel, a channel carrying system information, or a control channel, and the control channel is usable to schedule the channel carrying the system information.
13 . The method according to claim 12 , wherein one or more pieces of information corresponding to the first channel correspond to the first index, and the information comprises: information indicating the first index, a scrambling code of the first channel, or a demodulation reference signal (DMRS) sequence of the first channel.
14 . The method according to claim 8 , wherein a sequence of the synchronization signal corresponds to the second index.
15 . An apparatus comprising: at least one processor; and a non-transitory computer readable medium configured to store a program executable by the at least one processor, the program comprising instructions for: obtaining a first set, wherein the first set comprises a plurality of common signals, the plurality of common signals comprises a first common signal, the first common signal comprises a synchronization signal, an index of the first common signal in the first set is a first index, the first index corresponds to a plurality of resources, a second index of the first common signal is usable to indicate a resource of the plurality of resources, and the resource comprises a time domain resource or a frequency domain resource, wherein the first set corresponds to a first grouping rule, and the first grouping rule is usable to determine the first index or the second index; and the plurality of common signals in the first set are grouped into at least one group according to the first grouping rule, each of the at least one group corresponds to one resource set, and the resource set comprises at least one of the plurality of resources corresponding to the first index; and sending the plurality of common signals in the first set to a terminal.
16 . The apparatus according to claim 15 , wherein each of the plurality of common signals in the first set is capable of being sent at any of a plurality of sending moments corresponding to the first set.
17 . The apparatus according to claim 16 , wherein a sequence of the synchronization signal corresponds to the first grouping rule; or a quantity of the plurality of common signals in one group corresponding to the first set corresponds to the first grouping rule; or a time division duplexing configuration corresponds to the first grouping rule.
18 . The apparatus according to claim 15 , wherein the sequence of a synchronization signal corresponds to the first index.
19 . The apparatus according to claim 15 , wherein a first channel corresponding to the first common signal corresponds to the first index, and the first channel is: a broadcast channel, a channel carrying system information, or a control channel, and the control channel is usable to schedule the channel carrying the system information.
20 . The apparatus according to claim 19 , wherein one or more pieces of information corresponding to the first channel correspond to the first index, and the information comprises: information indicating the first index, a scrambling code of the first channel, or a demodulation reference signal (DMRS) sequence of the first channel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2021/078785, filed on Mar. 2, 2021, the disclosure of which is hereby incorporated by reference in its entirety. TECHNICAL FIELD Embodiments of this application relate to the field of wireless communication technologies, and specifically, to a wireless communication method, a communication apparatus, and a communication system. BACKGROUND Compared with a 4th generation (4G) long term evolution (LTE) system, a 5th generation (5G) new radio (NR) system is more flexible in system design, including designs of a basic parameter, a frame structure, a time-frequency resource of a channel, and the like, and can better support forward compatibility and scalability. However, there is still a lack of flexibility in design of a common signal. SUMMARY Embodiments of this application provide a wireless communication method, a communication apparatus, and a communication system, to flexibly send common signals on different beams. Embodiments of this application may be specifically implemented through the following technical solutions: According to a first aspect, an embodiment of this application provides a wireless communication method. The method may be performed by a terminal or a component (for example, a chip or an apparatus) used in a terminal. The method includes: detecting a common signal; determining, based on a detected first common signal, a first index of the first common signal in a first set and a second index of the first common signal, where the first set includes a plurality of common signals, the plurality of common signals include the first common signal, the first common signal includes a synchronization signal, the first index corresponds to a plurality of resources, the second index indicates one of the plurality of resources, and the resource includes a time domain resource and/or a frequency domain resource; and determining a resource of the first common signal based on the first index and the second index or based on the second index. Based on the foregoing solution, the terminal determines, based on the detected first common signal, the first index of the first common signal in the first set and the second index of the first common signal, and further determines the resource of the first common signal. In the method, one common signal may correspond to one or more resources, and time division multiplexing may be performed between different resources. Therefore, there is a plurality of sending occasions for one common signal. In addition, each common signal corresponds to one transmit beam direction, so that a sending occasion of a common signal corresponding to a transmit beam direction may be flexibly adjusted. When a plurality of common signals in one set are sent, a sending sequence of common signals corresponding to different transmit beam directions may be determined according to a service requirement, to further determine a resource occupied by each common signal. According to the method, a plurality of common signals in one set may be flexibly sent on different beams, so that a possibility that the common signals are detected by the terminal may be improved, and thus a waste of resources is reduced. In a possible implementation method, the first index or the second index is determined according to a first grouping rule. The common signals in the first set are grouped into at least one group according to the first grouping rule. Each of the at least one group corresponds to one resource set. The resource set includes at least one of the plurality of resources corresponding to the first index. Resource sets corresponding to different groups may be the same or different. In a possible implementation method, the first grouping rule corresponding to the first set is determined, based on a sequence of the synchronization signal, from a plurality of candidate grouping rules; or the first grouping rule corresponding to the first set is determined, based on a quantity of common signals in one group corresponding to the first set, from a plurality of candidate grouping rules; or the first grouping rule corresponding to the first set is determined, based on a time division duplexing configuration, from a plurality of candidate grouping rules. In a possible implementation method, the first index is determined based on a sequence of the synchronization signal. In a possible implementation method, the first index is determined based on a first channel corresponding to the first common signal. The first channel is a broadcast channel, a channel carrying system information, or a control channel. The control channel is used to schedule the channel carrying the system information. In a possible implementation method, the first index is determined based on one or more pieces of the following information corresponding to the first channel: information indicating the first index, a scrambling code