US 11,963,058 B2
Dual active protocol stack handovers above 24 GHz
Qiming Li, Beijing (CN); Chunhai Yao, Beijing (CN); Dawei Zhang, Saratoga, CA (US); Huaning Niu, San Jose, CA (US); Jie Cui, San Jose, CA (US); Manasa Raghavan, Sunnyvale, CA (US); Xiang Chen, Campbell, CA (US); Yang Tang, San Jose, CA (US); and Yushu Zhang, Beijing (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/438,179
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed May 10, 2021, PCT No. PCT/CN2021/092578
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2022/236525, PCT Pub. Date Nov. 17, 2022.
Prior Publication US 2023/0337094 A1, Oct. 19, 2023
Int. Cl. H04W 36/18 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/18 (2013.01) [H04W 36/00725 (2023.05)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
at least one processor configured to cause a user equipment (UE) to:
transmit, to one or more base stations configured to support one or more cells operating in frequency range 2 (FR2) above 24 GHz, one or more indications of a dual active protocol stack (DAPS) handover capability of the UE corresponding to FR2, wherein the one or more indications further indicate a capability of the UE to support DAPS handover in FR2 with common beam management (CBM) or independent beam management (IBM);
receive, from a target cell of the one or more cells, a command to perform a DAPS handover from a source cell of the one or more cells to the target cell, and
in response to receiving the command to perform the DAPS handover:
perform, while maintaining a data connection with the source cell, measurements on the target cell during the DAPS handover;
perform a physical random access channel (PRACH) procedure on the target cell;
receive, after completion of the PRACH procedure, a source cell release command from the target cell; and
release, in response to receiving the source cell release command, the data connection with the source cell.