US-12628231-B2 - Beam recovery method and apparatus, and user equipment

US12628231B2US 12628231 B2US12628231 B2US 12628231B2US-12628231-B2

Abstract

A link recovery method includes obtaining a configuration signaling sent by a network side device; determining a target reference signal resource subset from the candidate beam reference signal set; and indicating identification information of the target reference signal resource subset to the network side device. The configuration signaling includes a candidate beam reference signal set. The candidate beam reference signal set includes at least one reference signal resource subset. The reference signal resource subset includes at least one reference signal resource.

Inventors

MingJu Li

Assignees

BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20210331

Claims (19)

1 . A link recovery method, applied to multi-TRP scenarios, and performed by a user equipment (UE), comprising: obtaining a configuration signaling sent by a network side device, wherein the configuration signaling comprises a candidate beam reference signal set, the candidate beam reference signal set comprises at least one reference signal resource subset, and the reference signal resource subset comprises at least one reference signal resource; determining a target reference signal resource subset from the candidate beam reference signal set, wherein the target reference signal resource subset comprises at least one reference signal resource; indicating identification information of the target reference signal resource subset to the network side device, wherein the identification information of the target reference signal resource subset is used for link recovery; wherein determining the target reference signal resource subset from the candidate beam reference signal set comprises: obtaining a measurement result corresponding to the reference signal resource subset in the candidate beam reference signal set; determining the reference signal resource subset with a measurement result greater than a threshold value as the target reference signal resource subset.
2 . The method according to claim 1 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: obtaining the measurement result corresponding to the reference signal resource subset by at least one measurement value corresponding to a reference signal resource within the reference signal resource subset.
3 . The method according to claim 1 , wherein the reference signal resource subset comprises one reference signal resource; wherein the reference signal resource corresponds to N transmission configuration indication (TCI) states, where N is an integer greater than 0.
4 . The method according to claim 3 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: determining as the measurement result corresponding to the reference signal resource subset a measurement value corresponding to the reference signal resource obtained by using the N TCI states.
5 . The method according to claim 1 , wherein the reference signal resource subset comprises two or more reference signal resources; wherein each of the reference signal resources corresponds to one TCI state.
6 . The method according to claim 5 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: obtaining the measurement value corresponding to each of the reference signal resources by using the TCI state corresponding to each of the reference signal resources correspondingly, to obtain two or more measurement values; obtaining the measurement result corresponding to the reference signal resource subset according to the two or more measurement values.
7 . The method according to claim 1 , wherein indicating the identification information of the target reference signal resource subset to the network side device comprises: indicating the identification information of the target reference signal resource subset by using a physical random access channel (PRACH) in a random access process.
8 . The method according to claim 1 , wherein indicating the identification information of the target reference signal resource subset to the network side device comprises: sending the identification information of the target reference signal resource subset via a physical uplink shared channel (PUSCH).
9 . A link recovery method, applied to multi-TRP scenarios, and performed by a network side device, comprising: sending a configuration signaling to a user equipment (UE), to enable the UE to obtain a measurement result corresponding to a reference signal resource subset in a candidate beam reference signal set, and to determine the reference signal resource subset with a measurement result greater than a threshold value as a target reference signal resource subset, wherein the configuration signaling comprises the candidate beam reference signal set, the candidate beam reference signal set comprises at least one reference signal resource subset, and the reference signal resource subset comprises at least one reference signal resource; obtaining identification information of the target reference signal resource subset indicated by the UE; wherein the target reference signal resource subset comprises at least one reference signal resource, and the identification information of the target reference signal resource subset is used for link recovery.
10 . The method according to claim 9 , wherein obtaining the identification information of the target reference signal resource subset indicated by the UE comprises: determining the identification information of the target reference signal resource subset according to a physical random access channel (PRACH) in a random access process.
11 . The method according to claim 9 , wherein obtaining the identification information of the target reference signal resource subset indicated by the UE comprises: obtaining the identification information of the target reference signal resource subset via a physical uplink shared channel (PUSCH).
12 . The method according to claim 9 , further comprising: determining at least one of a new beam or a new quasi-co-location (QCL) parameter according to the identification information of the target reference signal resource subset to obtain a determination result, and communicating with the UE based on the determination result.
13 . A user equipment, comprising: a transceiver; a memory; a processor connected to the transceiver and the memory respectively and configured to control transmission and reception of a wireless signal of the transceiver and implement following operations by executing computer-executable instructions on the memory: obtaining a configuration signaling sent by a network side device, wherein the configuration signaling comprises a candidate beam reference signal set, the candidate beam reference signal set comprises at least one reference signal resource subset, and the reference signal resource subset comprises at least one reference signal resource; determining a target reference signal resource subset from the candidate beam reference signal set, wherein the target reference signal resource subset comprises at least one reference signal resource; indicating identification information of the target reference signal resource subset to the network side device, wherein the identification information of the target reference signal resource subset is used for link recovery; wherein the processor is further configured to implement following operations: determining the target reference signal resource subset from the candidate beam reference signal set comprises: obtaining a measurement result corresponding to the reference signal resource subset in the candidate beam reference signal set; determining the reference signal resource subset with a measurement result greater than a threshold value as the target reference signal resource subset.
14 . The user equipment according to claim 13 , wherein determining the target reference signal resource subset from the candidate beam reference signal set comprises: obtaining a measurement result corresponding to the reference signal resource subset in the candidate beam reference signal set; determining the reference signal resource subset with a measurement result greater than a threshold value as the target reference signal resource subset.
15 . The user equipment according to claim 14 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: obtaining the measurement result corresponding to the reference signal resource subset by at least one measurement value corresponding to a reference signal resource comprised in the reference signal resource subset.
16 . The user equipment according to claim 14 , wherein the reference signal resource subset comprises one reference signal resource; wherein the reference signal resource corresponds to N transmission configuration indication (TCI) states, where N is an integer greater than 0.
17 . The user equipment according to claim 16 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: determining as the measurement result corresponding to the reference signal resource subset a measurement value corresponding to the reference signal resource obtained by using the N TCI states.
18 . The user equipment according to claim 14 , wherein the reference signal resource subset comprises two or more reference signal resources; wherein each of the reference signal resources corresponds to one TCI state.
19 . The user equipment according to claim 18 , wherein obtaining the measurement result corresponding to the reference signal resource subset comprises: obtaining the measurement value corresponding to each of the reference signal resources by using the TCI state corresponding to each of the reference signal resources correspondingly, to obtain two or more measurement values; obtaining the measurement result corresponding to the reference signal resource subset according to the two or more measurement values.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a national phase entry of International Application No. PCT/CN2021/084608, filed Mar. 31, 2021, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to a communication technical field, and more particularly, to a link recovery method, a link recovery apparatus, a user equipment, a network side device, and a storage medium. BACKGROUND In a new radio (NR) communication system, it is generally required to transmit and receive data based on beams to ensure coverage and resist path loss. In addition, in a Rel-17 protocol, due to introduction of a physical downlink control channel (PDCCH) of multi-TRP, a plurality of beams may be used to send the same signal, such as downlink control information (DCI). When the plurality of beams is used to send the same signaling, if a user equipment (UE) moves or an antenna direction rotates, beam failure will occur in the beam currently configured for the UE for sending and receiving. At present, a beam failure recovery request needs to be sent to a network side device to perform link recovery. SUMMARY The present disclosure provides a link recovery method, a link recovery apparatus, a user equipment, a network side device, and a storage medium, which are used to improve a success rate of link recovery and reduce delay of the link recovery. According to an aspect of the present disclosure, a link recovery method is provided, which is performed by a user equipment (UE) and includes: obtaining a configuration signaling sent by a network side device, wherein the configuration signaling includes a candidate beam reference signal set, the candidate beam reference signal set includes at least one reference signal resource subset, and the reference signal resource subset includes at least one reference signal resource;determining a target reference signal resource subset from the candidate beam reference signal set;indicating identification information of the target reference signal resource subset to the network side device. According to another aspect of the present disclosure, a link recovery method is provided, which is performed by a network side device and includes: sending a configuration signaling to a user equipment (UE), wherein the configuration signaling includes a candidate beam reference signal set, the candidate beam reference signal set includes at least one reference signal resource subset, and the reference signal resource subset includes at least one reference signal resource;obtaining identification information of a target reference signal resource subset indicated by the UE. According to another aspect of the present disclosure, a user equipment is provided, which includes: a transceiver; a memory; a processor connected to the transceiver and the memory respectively and configured to control transmission and reception of a wireless signal of the transceiver and implement the method according to any one of the above-mentioned embodiment, by executing computer-executable instructions on the memory. According to another aspect of the present disclosure, a network side device is provided, which includes: a transceiver; a memory; a processor connected to the transceiver and the memory respectively and configured to control transmission and reception of a wireless signal of the transceiver and implement the method according to any one of the above-mentioned embodiment, by executing computer-executable instructions on the memory. According to another aspect of the present disclosure, a computer storage medium is provided, which has stored therein computer-executable instructions that, after executed by a processor, cause the method according to any one of the above-mentioned embodiment. Additional aspects and advantages of the present disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which: FIG. 1 is a schematic flowchart of a link recovery method provided by an embodiment of the present disclosure; FIG. 2 is a schematic flowchart of a link recovery method provided by another embodiment of the present disclosure; FIG. 3 is a schematic flowchart of a link recovery method provided by another embodiment of the present disclosure; FIG. 4 is a schematic flowchart of a link recovery method provided by another embodiment of the present disclosure; FIG. 5 is a schematic flowchart of a link recovery method provided by another embodiment of the present disclosure; FIG. 6 is a schematic flowchart of a link recovery method provided by another embodiment of the present disclosure; FIG.