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MME

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**MME**

What is MME?

MME stands for Mobility Management Entity. It is a key control-node in a 4G LTE (Long-Term Evolution) network. It is responsible for tasks such as tracking and paging mobile devices (UEs), managing security, handling authentication and authorization, and managing mobility (handover) between different base stations (eNodeBs). Essentially, it manages the connection between the mobile device and the core network.

What other technologies are related to MME?

MME Competitor Technologies

SGSN
The SGSN (Serving GPRS Support Node) provides packet routing to/from the UE within its service area, for 2G and 3G networks. It's functionally similar to the MME, but for older generation networks. Thus, it's a competitor in that older technologies are replaced by LTE/EPC.
AMF
The AMF (Access and Mobility Management Function) is the core network element responsible for access control and mobility management in 5G networks. It replaces the MME functionality in 5G, making it a direct competitor.
GGSN
The GGSN (Gateway GPRS Support Node) is similar to the PGW and provides internet connectivity for 2G/3G networks. Its function is now performed by the PGW in 4G/LTE, making it a competitor.
SMF
The SMF (Session Management Function) manages user sessions and is part of the 5G core network architecture. The MME's session management responsibilities are moved to the SMF in 5G networks.
HLR
The HLR (Home Location Register) is used in 2G and 3G networks for subscriber management. The HSS performs similar functions in 4G/LTE, so HLR represents a competing technology.
5GC
5GC (5G Core) is the core network architecture of 5G, which is a replacement of the EPC for 4G/LTE. Thus, it competes with the architecture containing the MME.
UDM
The UDM (Unified Data Management) is part of the 5G core. It serves a function similar to the HSS in the EPC, consolidating subscriber data. Thus, it is a competitor.
MSC
The MSC (Mobile Switching Center) handles circuit-switched voice calls in 2G and 3G networks. VoLTE is the modern equivalent over LTE, so MSC is a competitor.
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