US 12,219,544 B2
Multi-TRP beam indication using TCI state
Yushu Zhang, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Cupertino, CA (US); Hong He, San Jose, CA (US); Huaning Niu, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); and Weidong Yang, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/754,575
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Apr. 6, 2021, PCT No. PCT/CN2021/085605
§ 371(c)(1), (2) Date Apr. 6, 2022,
PCT Pub. No. WO2022/213251, PCT Pub. Date Oct. 13, 2022.
Prior Publication US 2024/0072869 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/044 (2023.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 72/232 (2023.01)
CPC H04W 72/046 (2013.01) [H04B 7/0695 (2013.01); H04L 5/0035 (2013.01); H04L 5/0048 (2013.01); H04L 5/0053 (2013.01); H04W 72/232 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A processor of a user equipment (UE) configured to perform operations comprising:
receiving, from a base station, at least one medium access control (MAC) control element (CE) that indicates multiple activated transmission configuration indicator (TCI) states;
receiving, from the base station, at least one downlink control information (DCI) indicating a subset of TCI states of the multiple activated TCI states, wherein the MAC CE and the DCI are part of a TCI configuration, and wherein the subset of TCI states corresponds to multiple transmission and reception points (TRPs) of a wireless network, wherein the at least one MAC CE is a single MAC CE and each of the multiple activated TCI states includes two TCI states, wherein the two TCI states are both one of downlink (DL) TCI states, uplink (UL) TCI states, or joint DL and UL TCI states, and wherein the at least one DCI transmission is a single DCI transmission having a TCI codepoint that indicates one of the multiple activated TCI states;
mapping the subset of TCI states to the corresponding multiple TRPs based on the TCI configuration; and
selecting a beam used for transmission or reception based on one mapped TCI state of the mapped subset of TCI states.