Security in Intra‐LTE State Transitions and Mobility
Dan Forsberg, Günther Horn, Wolf-Dietrich Moeller, Valtteri Niemi · 2010
This chapter describes security for state transitions and mobility inside LTE. These include registering to the network, moving to ECM-CONNECTED state, intra-LTE handovers, moving to idle state, idle state mobility, and de-registering from the network. The two layers of LTE security and the key management requirements are reflected in the security of state transitions and mobility scenarios. The MME runs the NAS level Security Mode Command procedure to activate the NAS keys and security algorithms. A section explains security context management on transitions to and from ECM-CONNECTED and RRC_CONNECTED state. A section describes idle state mobility inside LTE and there are many security and mobility related procedures that both the base station and the MME. Controlled Vocabulary Terms cryptographic protocols; handover; long term evolution; mobility management (mobile radio)