TCI state determination method and apparatus

Patent metadata

Field	Value
Publication number	US-12567934-B2
Application number	US-202018032017-A
Country	US
Kind code	B2
Filing date	Oct 14, 2020
Priority date	Oct 14, 2020
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A transmission configuration indicator (TCI) state determination method and apparatus includes receiving an indication signaling; and determining, according to the indication signaling, N TCI states corresponding to a search space set of the terminal, N being a positive integer by reading a configuration of the search space set from the indication signaling, including TCI state identifiers of the N TCI states corresponding to the search space set.

First claim

What is claimed is:

1 . A method for determining a transmission configuration indication (TCI) state, performed by a terminal, comprising:
receiving an indication signaling; and determining N TCI states corresponding to a search space set of the terminal according to the indication signaling, wherein N is a positive integer; wherein the search space set is a first search space set corresponding to multiple TCI states, and the first search space set comprises at least two PDCCH candidates; wherein, each of the at least two PDCCH candidates corresponds to the multiple TCI states.

2 . The method of claim 1 , wherein determining N TCI states corresponding to the search space set of the terminal according to the indication signaling, comprises:
reading configuration of the search space set from the indication signaling, wherein the configuration of the search space set comprises: TCI state identifiers of the N TCI states corresponding to the search space set.

3 . The method of claim 2 , wherein the TCI state identifiers comprises:
absolute identifiers of the TCI state; or, serial numbers of M TCI states corresponding to a control resource set (CORESET) to which the search space set belongs, sorted by numbers, where M is a positive integer.

4 . The method of claim 1 , wherein determining the TCI states corresponding to the search space set of the terminal according to the indication signaling comprises:
reading one or more CORESETs to which the search space set belongs and a TCI state corresponding to each CORESET from the indication signaling; and determining the TCI state corresponding to each CORESET to which the search space set belongs as the TCI states corresponding to the search space set.

5 . The method of claim 1 , wherein determining the TCI states corresponding to the search space set of the terminal according to the indication signaling comprises:
reading M TCI states corresponding to a control resource set CORESET to which the search space set belongs, from the indication signaling, where M is a positive integer; and determining all or part of the M TCI states as the TCI states corresponding to the search space set.

6 . The method of claim 5 , wherein determining all or a part of the M TCI states as the TCI states corresponding to the search space set comprises:
determining one TCI state in the M TCI states as the TCI state corresponding to the search space set according to a preset mapping relationship.

7 . The method of claim 6 , wherein determining one of the M TCI states as the TCI state corresponding to the search space set according to the preset mapping relationship comprises:
determining a TCI state corresponding to the search space set in a cyclic mapping manner according to an identifier of the search space set; or, determining a TCI state corresponding to the search space set in a sequential mapping manner according to an identifier of the search space set; or, determining a search space set group corresponding to the search space set, wherein M search space sets in the search space set group are in one-to-one correspondence with the M TCI states.

8 . The method of claim 1 , wherein the indication signaling is at least one of a radio resource control (RRC) signaling, a medium access control (MAC) signaling, or a downlink control information (DCI) signaling.

9 . A method for determining a TCI state, performed by a network device, comprising:
sending an indication signaling to a terminal, wherein the indication signaling is configured for the terminal to determine N TCI states corresponding to a search space set, where N is a positive integer; wherein the search space set is a first search space set corresponding to multiple TCI states, and the first search space set comprises at least two PDCCH candidates; wherein, each of the at least two PDCCH candidates corresponds to the multiple TCI states.

10 . The method of claim 9 , wherein the indication signaling carries:
configuration of the search space set, in which the configuration of the search space set comprises TCI state identifiers of the N TCI states corresponding to the search space set, wherein the TCI state identifiers comprise: absolute identifiers of the TCI states; or, serial numbers of M TCI states corresponding to a control resource set CORESET to which the search space set belongs, sorted by numbers, where M is a positive integer.

11 . The method of claim 9 , wherein the indication signaling carries:
one or control resource set CORESET to which the search space set belongs and a TCI state corresponding to each CORESET.

12 . The method of claim 9 , wherein the indication signaling carries:
M TCI states corresponding to a control resource set CORESET to which the search space set belongs, where M is a positive integer.

13 . A terminal, comprising:
a processor; a transceiver connected to the processor; a memory configured to store executable instructions that, when executed by the processor, cause the terminal to; receive an indication signaling; and determine N TCI states corresponding to a search space set of the terminal according to the indication signaling, where N is a positive integer; wherein the search space set is a first search space set corresponding to multiple TCI states, and the first search space set comprises at least two PDCCH candidates; wherein, each of the at least two PDCCH candidates corresponds to the multiple TCI states.

14 . A network device, comprising:
a processor; a transceiver connected to the processor; and a memory configured to store executable instructions that, when executed by the processor, cause the network device to implement the method of claim 9 .

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Li Mingju

Classifications

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0091 Primary

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title