Cisco Cisco ASR 5500
The following figure displays a sample network deployment of an MME, including all of the interface
connections with other 3GPP Evolved-UTRAN/Evolved Packet Core network devices.
connections with other 3GPP Evolved-UTRAN/Evolved Packet Core network devices.
Figure 3: E-UTRAN/EPC Network Scenario
Supported Logical Network Interfaces (Reference Points)
The MME supports the following logical network interfaces/reference points:
Gn Interface
Gn interfaces facilitate user mobility between 2G/3G 3GPP networks. The Gn interface is used for intra-PLMN
handovers. The MME supports pre-Release-8 Gn interfaces to allow inter-operation between EPS networks
and 2G/3G 3GPP networks.
handovers. The MME supports pre-Release-8 Gn interfaces to allow inter-operation between EPS networks
and 2G/3G 3GPP networks.
Roaming and inter access mobility between 2G and/or 3G SGSNs and an MME/S-GW are enabled by:
MME Administration Guide, StarOS Release 19
5
Mobility Management Entity Overview
MME in the E-UTRAN/EPC Network