US 12,445,184 B2
Beam indication method, network device, and terminal device
Yu Yang, Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed on Jul. 17, 2023, as Appl. No. 18/223,017.
Application 18/223,017 is a continuation of application No. PCT/CN2022/072464, filed on Jan. 18, 2022.
Claims priority of application No. 202110065344.0 (CN), filed on Jan. 18, 2021.
Prior Publication US 2023/0361843 A1, Nov. 9, 2023
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04B 7/0639 (2013.01) [H04B 7/0652 (2013.01); H04L 5/0048 (2013.01); H04L 5/0094 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A beam indication method, performed by a terminal device, comprising:
receiving a first command sent by a network device, wherein the first command is a Media Access Control (MAC) Control Element (CE) command, wherein the first command comprises:
a first signaling field with P first Transmission Configuration Indication (TCI) states, wherein P is a positive integer, and
first indication information used to indicate whether a second signaling field with Q second TCI states exists, wherein Q is a positive integer,
wherein the first command is used to indicate at least one TCI state in a TCI state pool, wherein the at least one TCI state comprises a joint TCI state or a separate TCI state, the TCI state pool is preconfigured by the network device, and the at least one TCI state is used to indicate common beam information of a plurality of channels or Reference Signals (RSs),
wherein in a multi Transmission and Reception Point (TRP) or multi channel group scenario, the first command is used to indicate at least one TCI state corresponding to each piece of TRP identification information or each channel group, wherein the channel group comprises a plurality of channels or RSs,
wherein for any piece of TRP identification information or any channel group, the first command is used to indicate the joint TCI state of the UL and the DL of the TRP identification information or channel group; or the first command is used to indicate the separate TCI state corresponding to each of the UL and the DL of the TRP identification information or channel group; and
determining, according to the first command, the at least one TCI state corresponding to an Uplink (UL) or a Downlink (DL),
wherein determining, according to the first command, the at least one TCI state corresponding to the UL or the DL comprises:
determining each piece of TRP identification information or each channel group identification or corresponding indication content according to the first command, wherein the indication content comprises at least one of the first signaling field, the second signaling field, or the first indication information,
wherein determining each piece of TRP identification information or each channel group identification or corresponding indication content according to the first command comprises: when the first command comprises at least one group of indication content corresponding to the TRP identification information or channel group, and does not comprise the TRP identification information or a channel group identification, determining each piece of TRP identification information or each channel group identification or the corresponding indication content according to an arrangement sequence or position of each group of indication content in the first command, and
determining, according to each piece of TRP identification information or each channel group identification or the corresponding indication content, at least one TCI state corresponding to each piece of TRP identification information or each channel group.