Recently, I was reading the information of LTE, and there is an MME in it. What does this mean?

The MME is one of the network elements of the core network, which is responsible for handling signaling. Its function is described in 23.4438+0, and I will list it here.

-NAS signaling parsing and processing

-security of -NAS signaling

Interact with the core networks of other 3GPP networks for mobility control.

-Control and perform the transmission of paging.

-management of ta list

Maintaining the mapping between the tai and the UE location area (LAI) and managing the UE time zone.

-Selection of -PDN Gateway and Service Gateway

-when switching to 2G/3G, select SGSN.

-when -MME changes, select MME.

-Handling of roaming

-Certification management

-anonymous management

Wait a minute. function