What functionality is included in the 5G AMF (Access and Mobility Management function)

AMF: the following functionality is included in the Access and Mobility Management function (AMF):

  • RAN CP interface (N2) termination
  • NAS (N1) termination, NAS ciphering and integrity protection
  • Management of registration
  • Management of connection
  • Management of reachability
  • Mobility management
  • Lawful intercept
  • SM messages transportation between UE and SMF
  • Transparent proxy for SM messages routing
  • Access authentication and authorization
  • SMS messages transportation between UE and SMSF
  • Security Anchor Functionality (SEAF)
  • Management of location services for regulatory services
  • Location Services messages transportation between UE and LMF as well as between RAN and LMF
  • ID allocation for EPS bearer to interwork with EPS
  • event notification of UE mobility