PS Core Learning- MME Key Signalling Procedures

• Attach procedure
• Detach procedure
• User equipment (UE)-initiated detach procedure
• Network side-initiated detach procedure
• S1 connection release procedure
• Service request procedure
• UE-triggered service request procedure
• Network side-triggered service request procedure
• Tracking area update (TAU) procedure
• TAU procedure without mobility management entity (MME) change
• TAU procedure with MME change
• Handover procedure
• X2-based handover procedure
• S1-based handover procedure
• Security procedure
• Authentication and key agreement (AKA) procedure
• Security mode command (SMC) procedure on the non-access stratum (NAS