Protocol Architecture - Cisco ASR 5x00 Home eNodeB Administration Manual

HeNB Gateway in Wireless LTE Network
 Optionally terminating S1-U interface with the HeNB and with the S-GW.
 Supporting tracking area code (TAC) and PLMN ID used by the HeNB.
 Allowing no X2 interface establishment between the HeNB-GW and other nodes.
 Optionally performing paging optimization in case the Allowed closed subscriber group (CSG) List of the paged
UE is included in the PAGING message.
At the same time, the MME hosts the following functions to support HeNB-GW:
 CSG reporting to S-GW/P-GW
 Access control for UEs that are members of CSG
 Optionally performing paging optimization
Important:
representative for more information on supported features.

Protocol Architecture

This section provides a brief description and pictorial representation of protocol stacks for User as well as Control
planes in context to HeNB-GW.
Protocol Stacks for S1 User Plane
The S1-U data plane is defined between the HeNB, HeNB-GW and the S-GW. The figures below show the S1-U
protocol stack with and without the HeNB-GW.
Figure 2. User plane for S1-U interface for HeNB with HeNB-GW
Some of the features may not be available in this release. Kindly contact your local Cisco
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