B.1 Direct Iurh connectivity between HNBs

25.4673GPPRelease 17Stage 2TSUTRAN architecture for 3G Home Node B (HNB)

The reference model shown in Figure B.1-1 below illustrates an HNB access network with direct Iurh connectivity.

Figure B.1-1: HNB access network deploying direct Iurh connectivity.

An alternative HNB access network configuration deploying the Iurh interface transported via the Security Gateway is shown in Figure B.1-2.

NOTE: If the Security Gateway and the HNB-GW are co-located then the co-located node should support IP routing.

Figure B.1-2: HNB access network deploying Iurh connectivity via a Security Gateway.

An alternative arrangement with the Iurhr interface transported via the Security Gateway and the HNB-GW is shown in Figure B.1-3. The HNB-GW provides transport routing functionality.

Figure B.1-3: HNB access network deploying Iurh connectivity via the HNB-GW.

Annex C (informative):
Implementation of PSC Disambiguation for Support of Legacy UE Mobility from RNC to HNB