5G移动终端认证状态漫游和传递方法

移动通信系统通过接入认证和密钥协商在网络与移动终端间建立信任关系，确保通信安全。5G中移动终端在移动过程中可能跨越多种接入方式，需要反复与网络进行认证和协商；物联网应用中存在大量功能相同、行为一致的成组终端，逐一与网络进行认证和协商对网络构成巨大压力。移动终端成功接入网络后，可由网络为其颁发认证状态标识，持该标识的设备可直接通过其他接入方式接入网或将该标识传递给组内成员。该方法可以实现认证状态的漫游，避免成组移动终端与网络逐一认证，从而提高接入效率，避免资源浪费，确保网络安全。

5G Mobile Equipment Authentication State Roaming and Transmission Approach

The mobile communication network establishes a trust relationship between the network and the user equipment with authentication and key agreement. 5G network is a convergence network. User equipment can access the network through a variety of ways and it needs to authenticate with the network repeatedly when it is moving between two access networks. In the application environment of Internet of Thing, a group of user equipment with same characteristics and behaviors need to authenticate with the network one by one, which will over-consumes network resource and lowers access efficiency. To solve this problem, an authentication state identification mechanism is designed. If the user equipment successfully accesses the network, the network grants it a status identification. It can access the network with any way, no need access authentication again for a while. It also can transfer such an identification to the other members of the group, thus avoiding the authentication one by one. This mechanism can improve the efficiency of access, avoid the waste of resources and ensure the security network.