25-144
Cisco Prime Network 4.0 User Guide
OL-29343-01
Chapter 25 Monitoring Mobile Technologies
Monitoring the Mobility Management Entity
Figure 25-19 depicts the topology of the LTE network along with MME:
Figure 25-19 MME Topology
The different features of the MME are listed below:
• Involved in bearer activation/deactivation
• Provides P-GW selection to the subscriber to connect to PDN
• Tracks the UE for idle mode and paging procedures, including transm issi ons
• Chooses the S-GW for a UE during initial attach and also at the time of intra-LTE handover
involving Core Network node relocation
• Authenticates the user (by interacting with the HSS)
• Works as a termination point for Non-Access Stratum (NAS) signaling
• Generates and allocates temporary identities to the UEs
• Checks whether the UE is authorized to camp on the service provider’s Public Land Mobile Network
(PLMN)
• Enforces UE roaming restrictions
• Handles security key management
• Communicates with other MMEs in the same or different PLMN
There are many different MME interfaces, which are listed below: