US-12628148-B2 - Beam indication method and apparatus

Abstract

A beam indication method includes: receiving first control signaling, where the first control signaling is configured to determine a target common beam, and the target common beam is configured to transmit a member in a first target common beam group; and transmitting at least one member in the first target common beam group by the target common beam.

Inventors

• MingJu Li

Assignees

• BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date

20260512

Application Date

20210225

Claims (20)

1. 1 . A beam indication method, performed by a terminal device, and comprising: receiving first control signaling, wherein the first control signaling is configured to determine a target common beam, and the target common beam is configured to transmit a member in a first target common beam group, wherein the first target common beam group corresponds to the target common beam; and transmitting at least one member in the first target common beam group by the target common beam; wherein the method further comprises: determining the first target common beam group according to indication information comprised in the first control signaling; wherein determining the first target common beam group according to the indication information comprised in the first control signaling comprises at least one of the following: determining a common beam group corresponding to a common beam group identifier as the first target common beam group, wherein the indication information comprises the common beam group identifier; determining a common beam group to which a control resource set (CORESET) corresponding to target CORESET identification information belongs as the first target common beam group, wherein the indication information comprises the target CORESET identification information; determining a first common beam group or another common beam group different from the first common beam group as the first target common beam group according to a numerical value of a common beam group flag, wherein the indication information comprises the common beam group flag, the first common beam group is a common beam group to which a first CORESET belongs, and the first CORESET is configured to transmit a physical downlink control channel (PDCCH) that carries the first control signaling; or determining a common beam group corresponding to a CORESET Poolindex identifier as the first target common beam group, wherein the indication information comprises the CORESET Pool index identifier.
2. 2 . The beam indication method according to claim 1 , wherein the first control signaling is downlink control information (DCI), the member comprises at least one of communication transmission carried by a physical channel or a reference signal, the physical channel comprises at least one of the following: the PDCCH, a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), or a physical broadcast channel (PBCH), the reference signal comprises at least one of the following: a channel state information reference signal (CSI-RS); the CSI-RS comprises at least one of the following: a CSI-RS for channel state information measurement, a CSI-RS for beam measurement, or a CSI-RS for pathloss estimation, a sounding reference signal (SRS); the SRS comprises at least one of the following: an SRS for channel state information measurement based on codebook, an SRS for channel state information measurement based on non-codebook, an SRS for beam measurement; or an SRS for positioning measurement, a positioning reference signal (PRS); a phase tracking reference signal (PTRS); or a synchronization signal block (SSB).
3. 3 . The beam indication method according to claim 1 , further comprising: determining the first target common beam group, wherein the first target common beam group is the common beam group to which a first CORESET belongs, and the first CORESET is configured to transmit the PDCCH that carries the first control signaling.
4. 4 . The beam indication method according to claim 1 , further comprising: determining the member in the first target common beam group.
5. 5 . The beam indication method according to claim 4 , wherein determining the member in the first target common beam group comprises: determining the member in the first target common beam group according to a default rule; or receiving configuration signaling, which is configured to determine member information of the member in the first target common beam group, and wherein the configuration signaling is at least one of radio resource control (RRC) signaling or medium access control control element (MAC CE) signaling.
6. 6 . The beam indication method according to claim 5 , wherein the member information of the member in the first target common beam group comprises CORESET identification information, and the CORESET identification information is configured to indicate at least one of the following: a PDCCH being a member in the first target common beam group, wherein the PDCCH is sent by a CORESET corresponding to the CORESET identification information; a physical downlink shared channel (PDSCH) being a member in the first target common beam group, wherein the PDSCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; a physical uplink shared channel (PUSCH) being a member in the first target common beam group, wherein the PUSCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; a physical uplink control channel (PUCCH) being a member in the first target common beam group, wherein the PUCCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; or a reference signal being a member in the first target common beam group, wherein the reference signal is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information.
7. 7 . The beam indication method according to claim 5 , wherein the member information of the member in the first target common beam group comprises CORESET PoolIndex identification information, and the CORESET PoolIndex identification information is configured to indicate at least one of the following: a physical downlink shared channel (PDSCH) being a member in the first target common beam group, wherein the PDSCH is scheduled by the PDCCH sent by a CORESET associated with the CORESET PoolIndex identification information; a physical uplink shared channel (PUSCH) being a member in the first target common beam group, wherein the PUSCH is scheduled by the PDCCH sent by the CORESET associated with the CORESET Poolindex identification information; a physical uplink control channel (PUCCH) being a member in the first target common beam group, wherein the PUCCH is scheduled by the PDCCH sent by the CORESET associated with the CORESET Poolindex identification information; or a reference signal being a member in the first target common beam group, wherein the reference signal is scheduled by the PDCCH sent by the CORESET associated with the CORESET PoolIndex identification information.
8. 8 . The beam indication method according to claim 5 , wherein the member information of the member in the first target common beam group comprises at least one of the following: identification information corresponding to a physical downlink shared channel (PDSCH); resource identification information corresponding to a physical uplink control channel (PUCCH); identification information corresponding to a physical uplink shared channel (PUSCH); resource identification information corresponding to a physical random access channel (PRACH); identification information of a reference signal resource; or synchronization signal block (SSB) index information of a physical broadcast channel (PBCH).
9. 9 . The beam indication method according to claim 1 , wherein the target common beam is configured for at least one of communication transmission of an uplink or communication transmission of a downlink.
10. 10 . The beam indication method according to claim 1 , wherein the method further comprises: receiving, in a case that the first control signaling fails, a second control signaling; and determining the target common beam according to the second control signaling.
11. 11 . The beam indication method according to claim 10 , wherein the first control signaling fails in at least one of the following cases: the first control signaling is not successfully decoded within a preset time threshold; a serial numeral of the first CORESET corresponding to the PDCCH in the first target common beam group is not 0; or the serial numeral of the first CORESET is 0 and an initial beam corresponding to the first CORESET is not obtained by using a random access process.
12. 12 . A beam indication method, performed by a network side device, and comprising: sending first control signaling, wherein the first control signaling is configured for a terminal device to determine a target common beam, and the target common beam is configured to transmit a member in a first target common beam group, wherein the first target common beam group corresponds to the target common beam; wherein the first control signaling comprises indication information configured for the terminal device to determine the first target common beam group, and the first target common beam group is determined according to the indication information; wherein the indication information comprises at least one of: a common beam group identifier, and the first target common beam group is a common beam group corresponding to the common beam group identifier: target CORESET identification information, and the first target common beam group is a common beam group to which a CORESET corresponding to the target CORESET identification information belongs; a common beam group flag, and the first target common beam group is a first common beam group corresponding to a numerical value of the common beam group flag or another common beam group different from the first common beam group, wherein the first common beam group is a common beam group to which the first CORESET belongs, and the first CORESET is configured to transmit a physical downlink control channel (PDCCH) that carries the first control signaling; or a CORESET Poolindex identifier, and the first target common beam group is a common beam group corresponding to the CORESET Poolindex identifier.
13. 13 . The beam indication method according to claim 12 , wherein the first control signaling is downlink control information (DCI), the member comprises at least one of communication transmission carried by a physical channel or a reference signal, the physical channel comprises at least one of the following: the PDCCH, a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), or a physical broadcast channel (PBCH), and the reference signal comprises at least one of the following: a channel state information reference signal (CSI-RS); the CSI-RS comprises at least one of the following: a CSI-RS for channel state information measurement, a CSI-RS for beam measurement, or a CSI-RS for pathloss estimation, a sounding reference signal (SRS); the SRS comprises at least one of the following: an SRS for channel state information measurement based on codebook, an SRS for channel state information measurement based on non-codebook, an SRS for beam measurement; or an SRS for positioning measurement, a positioning reference signal (PRS); a phase tracking reference signal (PTRS); or a synchronization signal block (SSB).
14. 14 . The beam indication method according to claim 12 , wherein the first target common beam group is the common beam group to which a first CORESET belongs, and the first CORESET is configured to transmit the PDCCH that carries the first control signaling.
15. 15 . The beam indication method according to claim 12 , further comprising: sending configuration signaling, which is configured for the terminal device to determine member information of the member in the first target common beam group, and wherein the configuration signaling is at least one of radio resource control (RRC) signaling and medium access control control element (MAC CE) signaling.
16. 16 . The beam indication method according to claim 15 , wherein the member information of the member in the first target common beam group comprises CORESET identification information, and the CORESET identification information is configured to indicate at least one of the following: a PDCCH channel being a member in the first target common beam group, wherein the PDCCH is sent by a CORESET corresponding to the CORESET identification information; a physical downlink shared channel (PDSCH) being a member in the first target common beam group, wherein the PDSCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; a physical uplink shared channel (PUSCH) being a member in the first target common beam group, wherein the PUSCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; a physical uplink control channel (PUCCH) being a member in the first target common beam group, wherein the PUCCH is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information; or a reference signal being a member in the first target common beam group, wherein the reference signal is scheduled by the PDCCH sent by the CORESET corresponding to the CORESET identification information.
17. 17 . The beam indication method according to claim 15 , wherein the member information of the member in the first target common beam group comprises CORESET PoolIndex identification information, and the CORESET PoolIndex identification information is configured to indicate at least one of the following: a physical downlink shared channel (PDSCH) being a member in the first target common beam group, wherein the PDSCH is scheduled by the PDCCH sent by a CORESET associated with the CORESET PoolIndex identification information; a physical uplink shared channel (PUSCH) being a member in the first target common beam group, wherein the PUSCH is scheduled by the PDCCH sent by the CORESET associated with the CORESET Poolindex identification information; a physical uplink control channel (PUCCH) being a member in the first target common beam group, wherein the PUCCH is scheduled by the PDCCH sent by the CORESET associated with the CORESET Poolindex identification information; or a reference signal being a member in the first target common beam group, wherein the reference signal is scheduled by the PDCCH sent by the CORESET associated with the CORESET PoolIndex identification information.
18. 18 . The beam indication method according to claim 15 , wherein the member information of the member in the first target common beam group comprises at least one of the following: identification information corresponding to a physical downlink shared channel (PDSCH); resource identification information corresponding to a physical uplink control channel (PUCCH); identification information corresponding to a physical uplink shared channel (PUSCH); resource identification information corresponding to a physical random access channel (PRACH); identification information of a reference signal resource; or synchronization signal block (SSB) index information of a physical broadcast channel (PBCH).
19. 19 . The beam indication method according to claim 12 , wherein the target common beam is configured for at least one of communication transmission of an uplink or communication transmission of a downlink.
20. 20 . The beam indication method according to claim 12 , wherein the method further comprises: sending, in a case that the first control signaling fails, a second control signaling, wherein the second control signaling is configured for the terminal device to determine the target common beam.

Description

CROSS REFERENCE TO RELATED APPLICATION The present application is a U.S. National Stage of International Application No. PCT/CN2021/077963, filed on Feb. 25, 2021, the contents of all of which are incorporated herein by reference in their entirety for all purposes. BACKGROUND With the development of new radio (NR) technologies, attenuation of a high-frequency channel is fast, and to ensure a network coverage, it needs to use beam-based transmission. SUMMARY The present disclosure provides a beam indication method and apparatus. An example of a first aspect of the disclosure provides a beam indication method, performed by a terminal device, and including: receiving first control signaling, where the first control signaling is configured to determine a target common beam, and the target common beam is configured to transmit a member in a first target common beam group; and transmitting at least one member in the first target common beam group by the target common beam. An example of a second aspect of the disclosure provides another beam indication method, performed by a network side device, and including: sending first control signaling, where the first control signaling is configured to determine a target common beam by a terminal device, and the target common beam is configured to transmit a member in a first target common beam group. An example of a third aspect of the disclosure provides a communication device, including: at least one processor; and a memory in communication connection with the at least one processor, where the memory stores instructions capable of being executed by the at least one processor, and the instructions, when executed by the at least one processor, enable the at least one processor to execute the beam indication method described in the example of the first aspect of the disclosure, or the beam indication method described in the example of the second aspect of the disclosure. Part of the additional aspects and advantages of the disclosure will be given in the following description, and part of them will become apparent in the following description or known by practice from the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The above-mentioned and/or additional aspects and advantages of the disclosure will become apparent and understandable in the description, for example, in conjunction with the following accompanying drawings, in which: FIG. 1 is a schematic flow chart of a beam indication method provided by an example of the disclosure. FIG. 2 is a schematic flow chart of another beam indication method provided by an example of the disclosure. FIG. 3 is a schematic flow chart of another beam indication method provided by an example of the disclosure. FIG. 4 is a schematic flow chart of another beam indication method provided by an example of the disclosure. FIG. 5 is a schematic structural diagram of a beam indication apparatus provided by an example of the disclosure. FIG. 6 is a schematic structural diagram of another beam indication apparatus provided by an example of the disclosure. FIG. 7 is a schematic structural diagram of a communication device provided by an example of the disclosure. DETAILED DESCRIPTION The examples of the disclosure will be described in detail below, and instances of the examples are shown in the accompanying drawings, where the same or similar numerals throughout indicate the same or similar elements or elements with the same or similar functions. The examples described below with reference to the accompanying drawings are examples to explain the disclosure, rather than to be understood as limitations. The specific description of terminal devices involved in the examples of the disclosure is as follows: the terminal devices may be scattered throughout a whole mobile communication system, and each terminal device may be stationary or mobile. The terminal device may further be referred to by those skilled in the art as a mobile station, a user station, a mobile unit, a user unit, a wireless unit, a remote unit, a mobile device, a terminal device, a wireless device, a wireless communication device, a remote device, a mobile user station, an access terminal device, a mobile terminal device, a wireless terminal device, a remote terminal device, a handheld device, a user agent, a mobile client, a client, or some other appropriate terms. The terminal device may be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet, a laptop, a cordless telephone, a wireless local loop (WLL) station, a wearable device, a vehicle-mounted terminal, and the like, and can communicate with a base station in the mobile communication system. The specific description of a network side device involved in the examples of the disclosure is as follows: the network side device is deployed in a wireless access network to provide a wireless access function for the terminal device. The network side device m