US 12,143,325 B2
Quasi co-located framework for beam reception in a single frequency network
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, Los Gatos, CA (US); Haitong Sun, Cupertino, CA (US); Hong He, San Jose, CA (US); Jie Cui, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); Weidong Yang, San Diego, CA (US); Yang Tang, San Jose, CA (US); Yuchul Kim, San Jose, CA (US); and Yuqin Chen, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/593,455
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed May 15, 2020, PCT No. PCT/CN2020/090608
§ 371(c)(1), (2) Date Sep. 19, 2021,
PCT Pub. No. WO2021/227043, PCT Pub. Date Nov. 18, 2021.
Prior Publication US 2022/0303090 A1, Sep. 22, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 1/20 (2006.01)
CPC H04L 5/0048 (2013.01) [H04L 1/203 (2013.01); H04L 5/0035 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
at a user equipment (UE):
receiving downlink control information (DCI) comprising a transmission configuration indication (TCI) codepoint with multiple TCI states for a physical downlink shared channel (PDSCH);
receiving a demodulated reference signal (DMRS), wherein DMRS ports for the PDSCH are quasi co-located (QCLed) with one or more channel state information reference signal (CSI-RS) of the multiple TCI states, wherein the one or more CSI-RS are from multiple cells of a single frequency network (SFN) based on the multiple TCI states; and
determining a time and frequency offset corresponding to each of the multiple cells based on the CSI-RS.