US 12,355,884 B2
Network slice authentication method and communications apparatus
Fei Li, Shenzhen (CN); and Bo Zhang, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 9, 2021, as Appl. No. 17/171,675.
Application 17/171,675 is a continuation of application No. PCT/CN2019/111923, filed on Oct. 18, 2019.
Claims priority of application No. 201811307957.5 (CN), filed on Nov. 5, 2018; and application No. 201910002319.0 (CN), filed on Jan. 2, 2019.
Prior Publication US 2021/0168139 A1, Jun. 3, 2021
Int. Cl. H04L 67/01 (2022.01); H04L 9/32 (2006.01); H04L 9/40 (2022.01)
CPC H04L 9/3213 (2013.01) [H04L 63/0876 (2013.01); H04L 63/102 (2013.01); H04L 63/20 (2013.01); H04L 67/01 (2022.05)] 20 Claims
OG exemplary drawing
 
1. A service authorization method comprising:
receiving, by a first server, a first request from a client that is a network element for performing a network function in a core network deployed using a service-based architecture, wherein the first request requests an access token, and wherein the first request comprises first slice information, and wherein the first slice information comprises a network slice instance (NSI) identifier (ID) list or a single network slice selection assistance information (S-NSSAI) list;
performing, by the first server, authentication on the client;
sending, by the first server, a first response message to the client when the client is authenticated, wherein the first response message comprises the access token, and wherein the access token comprises the first slice information;
receiving, by a second server, a second request from the client, wherein the second request requests a function service, and wherein the second request comprises the access token;
verifying, by the second server, the first slice information to obtain a verification result; and
replying, by the second server, to the client based on the verification result.