US 11,997,556 B2
Communication method and communications apparatus
Le Yan, Shenzhen (CN); Hongping Zhang, Shanghai (CN); Qinghai Zeng, Shanghai (CN); Tingting Geng, Shanghai (CN); and Shitong Yuan, Chengdu (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 25, 2021, as Appl. No. 17/358,746.
Application 17/358,746 is a continuation of application No. PCT/CN2019/127836, filed on Dec. 24, 2019.
Claims priority of application No. 201811603870.2 (CN), filed on Dec. 26, 2018.
Prior Publication US 2021/0321313 A1, Oct. 14, 2021
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 36/30 (2009.01)
CPC H04W 36/08 (2013.01) [H04W 36/0083 (2013.01); H04W 36/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving conditional handover configuration information from a first network device, wherein the first network device is a network device to which a serving cell belongs, and the serving cell is a cell that is currently accessed by a terminal device;
determining a first target cell based on the conditional handover configuration information, wherein determining the first target cell comprises:
receiving a handover message from the first network device in a process of determining the first target cell, wherein the handover message comprises an identifier of a second target cell and a dedicated random access resource required for accessing the second target cell, and the dedicated random access resource comprises a preamble index and a time-frequency resource;
stopping determining the first target cell based on the conditional handover configuration information, and performing contention-free random access to the second target cell based on the dedicated random access resource; and
determining, based on the conditional handover configuration information when the contention-free random access to the second target cell fails, the first target cell.