The "brain" of the control plane. it handles signaling related to mobility and security for E-UTRAN access. It is responsible for tracking and paging UEs (User Equipment) in idle mode.
The UE sends an Attach Request to the MME via the eNodeB. The "brain" of the control plane
This is the primary document covering the GPRS enhancements for E-UTRAN access, detailing the architecture and every major call flow in the EPC. The "brain" of the control plane
When a mobile device powers on, it must register with the network to receive services. The "brain" of the control plane
The MME coordinates with the target eNodeB and S-GW to reserve resources.
The primary function of the S-GW is routing and forwarding user data packets. it acts as the mobility anchor for the user plane during handovers between eNodeBs.