关键词: 漫游, 统一认证, 公共配置管理, 5G-R, 关键集群业务

Abstract: After roaming, a user of 5G-R Mission Critical X-Service (MCX) needs to pass the validity verification and authorization of the Identity Management Server (IDMS) for unified authentication in order to securely access the MCX service resources of the visited place.This paper studies and analyzes IDMS network deployment and interactive authentication, etc., and proposes a variety of networking methods such as IDMS shared by all railways, two-level IDMS of all railways/railway bureaus, and IDMS deployed by railway bureaus, as well as their corresponding interactive authentication mechanisms.

Key words: roaming, IDMS, Common Service Configuration (CSC) , 5G-R, MCX