The Evolved Packet System Mobility Management (EMM) protocol gives methods for the management of mobility when the User Equipment (UE) utilizes the Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). It additionally gives management of safety to the NAS protocols. EMM can generally be started while a NAS signalling association exists. The strategies having a place with this kind are started by the network. They incorporate GUTI reallocation, confirmation, security mode control, identification and EMM data.