Paging Procedure; Subscriber Session Processing; Subscriber Registration Setup Procedure - Cisco ASR 5000 Series Administration Manual

▀ How MME Works

Paging Procedure

Paging is initiated when there is data to be sent to an idle UE to trigger a service request from the UE. Once the UE
reaches connected state, the data is forwarded to it.
Paging retransmission can be controlled by configuring a paging-timer and retransmission attempts on system.

Subscriber Session Processing

This section provides information on how LTE/SAE subscriber data sessions are processed by the system MME. The
following procedures are provided:
User-initiated Transparent IP: An IP EPS Bearer context request is received by the MME from the UE for a PDN. The
subscriber is provided basic access to a PDN without the MME authenticating the subscriber. Either a static or dynamic
IP address can be assigned to the MS in this scenario.
User-initiated Non-transparent IP: An IP EPS Bearer context request is received by the MME from the UE for a PDN.
The MME provides subscriber authentication services for the data session. Either a static or dynamic IP address can be
assigned to the MS in this scenario.
Network-initiated: An IP EPS Bearer context request is received by the MME from the PDN for a specific subscriber. If
configured to support network-initiated sessions, the MME, will initiate the process of paging the MS and establishing a
EPS Bearer context.

Subscriber Registration Setup Procedure

The following figure and the text that follows describe the message flow for a successful user-initiated subscriber
registration setup procedure.
▄ Cisco ASR 5000 Series Mobility Management Entity Administration Guide
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MME in LTE/SAE Wireless Data Services
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