Henb Access Network Elements; Home Enodeb - Cisco ASR 5x00 Home eNodeB Administration Manual

HeNB Gateway in Wireless LTE Network
There is another deployment scenario for HeNBs where HeNB-GW is absent. In this deplyment, HeNBs connect
directly to highly scalable MMEs. This deplyment scenario is displayed in the following figure:
Figure 5.
Cisco's LTE Femtocell network solution focuses on Variant 1 where HeNB-GW is mandatory for HeNBs to connect.
Communication between the HeNB and the HeNB GW is secured by a security Gateway (SeGW) function. The SeGW
function is optionally collocated or else offloaded to external security function node.

HeNB Access Network Elements

This section provides the brief description and functionality of various network elements involved in the LTE Femtocell
access network. The HeNB access network includes the following functional entities:


Home eNodeB


Security Gateway (SeGW)

HeNB Gateway (HeNB-GW)

HeNB Management System (HeMS)

CSG List Server
Home eNodeB
A Home eNodeB (HeNB) is the a customer premise equipment that offers Uu interface to UE and S1 interface over
IPSec tunnel to HeNB-GW for accessing LTE Core Network in Femtocell access network.
It also provides the support to HeNB registration and UE registration over S1 interface with the HeNB-GW. Apart from
these functions HeNB also supports functions as given below:
Without HeNB-GW
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