Method and system for managing security in mobile communication system

摘要

A method, an apparatus, and a system for solving and managing security problems, which may occur during a handover of a User Equipment (UE) between PLMNs in a mobile communication network, by using a Non-Access Stratum (NAS) protocol are provided. By the method, a UE can perform a security mode command and an authentication with a network. Further, the method can prevent interruption of communication due to authentication or security during a handover of a UE between Public Land Mobile Networks (PLMNs).

主权项

1. A method for performing security procedures by a mobility management entity (MME) in a mobile communication system, the method comprising:
comparing, by the MME, a public land mobile networks identity (PLMN ID) included in a tracking area update (TAU) request message received from a user equipment (UE) with a PLMN ID of the MME; and suspending transmission of an authentication request message to the UE until a TAU procedure is completed, if the PLMN ID included in the TAU request message is different from the PLMN ID of the MME.