MME
Mobility Management Entity
Core NetworkIntroduced Rel-8
Definition
The EPC control-plane node handling NAS signaling, idle-mode UE tracking, bearer activation/deactivation, and authentication for LTE.
Evolution Across Releases
- A Rel-8 EPC function; its role is split into AMF (mobility) and SMF (session) in the 5G core.
Related Specifications
TS 23.401
General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access
Architecture
Rel-20TS5GCUpdated 2026-07-26
TS 36.413
Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)
Protocol
Rel-15TSLTE-Advanced ProUpdated 2026-07-25