Communication network and method for establishing non-access layer connection in communication network

摘要

A communication network (100) includes a common control plane circuitry (202) configured to provide a mobility management function (108) and an authentication function (204), one or more dedicated control plane circuitries (114, 116), each dedicated control plane circuitry (114, 116) configured to provide a respective session management function (110, 112). The authentication function (204) includes to authenticate a communication terminal (102) and to generate a first key (212) for the communication terminal (102). The mobility management function (108) includes to provide a non-access stratum connection (302) with the authenticated communication terminal (102) using the generated first key (212) in response to a first request message (206) sent by the communication terminal (102). The authentication function (204) further includes to generate a respective second key (310) for each selected session management function (110, 112). Each session management function (110, 112) includes to provide a non-access stratum connection (402, 502) with the authenticated communication terminal (102) using the respectively generated second key (310).