US 11,991,573 B2
Cell handover method and device, and user processing method and device
Jiren Han, Guangdong (CN); Zhuang Liu, Guangdong (CN); and Yin Gao, Guangdong (CN)
Assigned to ZTE CORPORATION, Guangdong (CN)
Appl. No. 17/427,871
Filed by ZTE CORPORATION, Guangdong (CN)
PCT Filed Jan. 22, 2020, PCT No. PCT/CN2020/073773
§ 371(c)(1), (2) Date Aug. 2, 2021,
PCT Pub. No. WO2020/156424, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201910108600.2 (CN), filed on Feb. 3, 2019.
Prior Publication US 2022/0124579 A1, Apr. 21, 2022
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/00837 (2018.08) [H04W 36/0009 (2018.08); H04W 36/0033 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A cell handover method applied to a centralized network element, comprising:
receiving a trigger message sent by a User Equipment (UE), and sending a UE context setup request, which is configured to instruct a target distributed network element to set up a UE context, to the target distributed network element in response to the trigger message; and
handing the UE over to a target cell corresponding to the target distributed network element according to the UE context,
the method further comprising:
after receiving the trigger message sent by the UE, sending a first next generation (NG) interface message to a core network; wherein, the first NG interface message carries Closed Access Group (CAG) membership information of the target cell; and
the first NG interface message comprises at least one of a CAG membership verification request message, a Protocol Data Unit (PDU) session modification indication message, a UE context modification indication message, a handover request message and a path switch request message.