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1. (WO2018166317) SERVICE SWITCHING METHOD, CONTEXT MIGRATION METHOD AND RELATED DEVICE

Pub. No.:    WO/2018/166317    International Application No.:    PCT/CN2018/076448
Publication Date: Fri Sep 21 01:59:59 CEST 2018 International Filing Date: Tue Feb 13 00:59:59 CET 2018
IPC: H04W 36/00
H04W 36/18
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: SHUAI, Yanglai
帅扬来
LIU, Jing
刘菁
WANG, Yan
王岩
Title: SERVICE SWITCHING METHOD, CONTEXT MIGRATION METHOD AND RELATED DEVICE
Abstract:
Disclosed in the embodiments of the present application are a service switching method, a context migration method and a related device, used for ensuring service continuity. The method in the embodiments of the present application comprises: a target distributed control unit DU receives a switching request message sent by a centralised control unit CU, the switching request message comprising at least one of the following items of information: information used for instructing the target DU to perform switching of a near-end deployed URLLC service, used for indicating a context migration policy supported by a source DU near-end deployed URLLC service server, used for indicating latency requirements corresponding to the URLLC service, or used for indicating packet loss rate requirements corresponding to the URLLC service; the target DU sends a switching request response message to the CU, the switching request response message being used by the CU for instructing a UE to initiate access to the target DU; the switching request response message contains at least one of the following items of information: the IP address of a target URLLC service server, the IP address of a target local network gateway, a switching support indication, and a negotiated URLLC server context migration policy.