US 12,356,490 B2
Fast secondary cell activation with temporary reference signals
Hong He, San Jose, CA (US); Chunhai Yao, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Cupertino, CA (US); Oghenekome Oteri, San Diego, CA (US); Seyed Ali Akbar Fakoorian, San Diego, CA (US); Wei Zeng, Saratoga, CA (US); Weidong Yang, San Diego, CA (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 9, 2022, as Appl. No. 17/818,418.
Application 17/818,418 is a continuation of application No. 17/760,029, previously published as PCT/CN2021/110992, filed on Aug. 5, 2021.
Prior Publication US 2023/0040353 A1, Feb. 9, 2023
Int. Cl. H04W 76/20 (2018.01); H04J 11/00 (2006.01); H04L 1/1607 (2023.01); H04L 5/00 (2006.01); H04W 76/15 (2018.01); H04W 76/25 (2018.01)
CPC H04W 76/25 (2018.02) [H04J 11/0076 (2013.01); H04L 1/1614 (2013.01); H04L 5/001 (2013.01); H04W 76/15 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A processor of a user equipment (UE) configured to perform operations comprising:
receiving secondary cell (SCell) activation configuration information from a first cell;
receiving a medium access control (MAC) control element (CE) from the first cell, wherein the MAC CE indicates that a SCell state is to be changed from a deactivated state to an activated state, wherein the MAC CE comprises a single-octet bitmap comprising seven Ci fields and one reserved bit, and wherein a Ci field indicates an activation status of a SCell with SCell index i; and
receiving aperiodic reference signals from a secondary cell (SCell), wherein the reception of the aperiodic reference signals is triggered by the MAC CE, and wherein the MAC CE comprises a trigger state (TS) field common to all component carriers (CCs) and indicates whether each CC is to utilize SCell activation with aperiodic reference signals or a synchronization signal block (SSB) based SCell activation.