US 11,864,128 B2
Default PUCCH and SRS beam determination
Yushu Zhang, Beijing (CN); Chunhai Yao, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Fangli Xu, Beijing (CN); Haijing Hu, Beijing (CN); Haitong Sun, Irvine, CA (US); Hong He, Cupertino, CA (US); Jie Cui, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Wei Zeng, San Diego, CA (US); Weidong Yang, San Diego, CA (US); Yang Tang, Cupertino, CA (US); Yuchul Kim, Santa Clara, CA (US); and Yuqin Chen, Shenzhen (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/053,507
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Nov. 7, 2019, PCT No. PCT/CN2019/116181
§ 371(c)(1), (2) Date Nov. 6, 2020,
PCT Pub. No. WO2021/087845, PCT Pub. Date May 14, 2021.
Prior Publication US 2022/0279460 A1, Sep. 1, 2022
Int. Cl. H04W 16/28 (2009.01); H04W 52/24 (2009.01); H04W 52/14 (2009.01); H04W 72/02 (2009.01); H04W 74/08 (2009.01)
CPC H04W 52/242 (2013.01) [H04W 16/28 (2013.01); H04W 52/146 (2013.01); H04W 72/02 (2013.01); H04W 74/0841 (2013.01); H04W 74/0866 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A user equipment device (UE), comprising:
at least one antenna;
at least one radio, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT);
one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform voice and/or data communications;
wherein the one or more processors are configured to cause the UE to:
in response to determining that a base station serving the UE has not configured spatial relationship information for a default beam for transmissions in a component carrier (CC), determine whether a pathloss reference signal (RS) has been configured in the CC;
in response to determining that the pathloss RS has been configured in the CC, determine the default beam for transmissions based, at least in part, on the pathloss RS;
in response to determining that the pathloss RS has not been configured in the CC, determine whether any control resource sets (CORESETs) and/or transmission configuration indication (TCI) states for a physical downlink shared channel (PDSCH) in the CC have been configured; and
in response to determining that no CORESESTs and/or TCI states have been configured in the CC, determine the default beam for transmissions based, at least in part, on a physical random-access channel (PRACH) procedure.