US 12,232,146 B2
SRS antenna switching enhancement
Haitong Sun, Irvine, CA (US); Hong He, Cupertino, CA (US); Wei Zeng, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Chunxuan Ye, San Diego, CA (US); Sigen Ye, Whitehouse Station, NJ (US); Weidong Yang, San Diego, CA (US); Chunhai Yao, Beijing (CN); Jie Cui, San Jose, CA (US); Yang Tang, Cupertino, CA (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/437,935
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Oct. 12, 2020, PCT No. PCT/CN2020/120442
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2022/077171, PCT Pub. Date Apr. 21, 2022.
Prior Publication US 2022/0303973 A1, Sep. 22, 2022
Int. Cl. H04B 7/04 (2017.01); H04B 7/0413 (2017.01); H04L 5/00 (2006.01); H04W 72/51 (2023.01)
CPC H04W 72/51 (2023.01) [H04B 7/0413 (2013.01); H04L 5/0048 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A user equipment device (UE), comprising:
at least one antenna;
a radio operably coupled to the at least one antenna; and
a processor operably coupled to the radio;
wherein the processor is configured to cause the UE to:
transmit, to a base station, a capability message indicating an antenna configuration associated with SRS antenna switching, wherein the capability message indicates at least one of a one transmit point (1T) and six receive point (6R) SRS resource set configuration, a 1T8R SRS resource set configuration, a 2T6R SRS resource set configuration, a 2T8R SRS resource set configuration, or a 4T8R SRS resource set configuration;
receive, from the base station, a configuration message, wherein the configuration message indicates an SRS antenna switching configuration, wherein the SRS antenna switching configuration is based, at least in part, on the capability message, wherein, when at least two SRS resource sets are configured with a resource type of aperiodic,
wherein, when the capability message indicates a 1T6R SRS resource set configuration:
the configuration message indicates a first set of SRS resources and a second set of SRS resources,
each SRS resource in the first set of SRS resources includes one SRS port,
each SRS resource in the second set of SRS resources includes one SRS port, and
a total of six SRS resources are indicated between the first set of SRS resources and the second set of SRS resources, and
wherein, when the capability message indicates a 2T8R SRS resource set configuration:
the configuration message indicates a first set of SRS resources and a second set of SRS resources,
each SRS resource in the first set of SRS resources includes two SRS ports,
each SRS resource in the second set of SRS resources includes two SRS ports, and
a total of four SRS resources are indicated between the first set of SRS resources and the second set of SRS resources; and
transmit, to the base station, one or more SRSs according to the SRS antenna switching configuration.