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eNodeB solutions. Rel-8 defined the Home NodeB solutions for UMTS-HSPA for which the baseline<br />
architecture is shown in figure B.13 below.<br />
cap.<br />
UE<br />
cap.<br />
UE<br />
Uu<br />
HNB<br />
C1 (OMA DM /OTA)<br />
Iuh<br />
HNB<br />
GW<br />
VPLMN HPLMN<br />
Iu-CS<br />
Iu-PS<br />
MSC /<br />
VLR<br />
CSG<br />
List Srv<br />
SGSN<br />
HLR /<br />
HSS<br />
Gr/S6d<br />
Figure B.13. Baseline Architecture for Home NodeB Solutions for UMTS-HSPA (based on 3GPP<br />
TS 23.830).<br />
The Home NodeB (HNB) in the figure provides the RAN connectivity using the Iuh interface, and supports<br />
the NodeB and most of the RNC functions from the standard UMTS-HSPA architecture. Also, the HNB<br />
supports authentication, Home NodeB Gateway (HNB-GW) discovery, HNB registration and UE<br />
registration over Iuh. The HNB GW serves the purpose of an RNC presenting itself to the CN as a<br />
concentrator of HNB connections (i.e. the HNB-GW provides a concentration function for the control and<br />
user planes). It should be noted that although it is not shown in Figure B.13, a Security Gateway (SeGW)<br />
is a mandatory logical function which may be implemented either as a separate physical entity or<br />
integrated into the HNB-GW. The SeGW secures the communication from/to the HNB. The Closed<br />
Subscriber Group List Server (CSG List Srv) is an optional function allowing the network to update the<br />
allowed CSG lists (i.e. the users allowed access on each Home NodeB) on CSG-capable UEs.<br />
For LTE, there are three architecture variants supported in 3GPP for Home eNodeBs which are shown in<br />
Figures B.15 through B.17, based on the logical architecture in Figure B.14.<br />
www.4gamericas.org February 2011 Page 139<br />
D
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