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1. (WO2018176442) ACCESS METHOD, NETWORK DEVICE, TERMINAL DEVICE AND AMF DEVICE

Pub. No.:    WO/2018/176442    International Application No.:    PCT/CN2017/079236
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sun Apr 02 01:59:59 CEST 2017
IPC: H04W 48/16
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: YU, Fang
余芳
NI, Hui
倪慧
Title: ACCESS METHOD, NETWORK DEVICE, TERMINAL DEVICE AND AMF DEVICE
Abstract:
Provided are an access method, a network device, a terminal device and an AMF device. The method comprises: a network device acquiring first information, wherein the first information is used to indicate a slice/service type (SST) of a slice which is allowed to be accessed by a terminal device and a radio access technology (RAT) type which is allowed to be used when accessing the slice which is allowed to be accessed; the network device acquiring second information, wherein the second information is used to indicate an SST of a slice connected to an access and mobility management function (AMF) device and an RAT type supported by the slice connected to the AMF device; and the network device selecting, according to the first information and the second information, a first AMF device serving the terminal device. The access method, the network device, the terminal device and the AMF device provided in the present application can reduce the probability of reselecting an AMF for a terminal device, thereby reducing signalling overheads and improving communication efficiency.