Cisco Cisco Packet Data Gateway (PDG) Nota De Lançamento
HNB-GW Changes in Release 15.0
▀ HNB-GW Enhancements for September 30, 2013
▄ Cisco ASR 5x00 Release Change Reference
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HNB-GW Enhancements for September 30, 2013
HNB-GW Feature Changes as of September 30, 2013
This section provides information on HNB-GW feature changes in release 15.0.
Important:
For more information regarding features in this section, refer to the HNB-GW Administration Guide
for this release.
New HNB-GW Features
This section identifies new HNB-GW features available in release 15.0.
Femto to Femto (F2F) Handoff via CN
Previous Behavior: Prior to release 15.0, F2F Handin/Handoff was supported for Closed Mode HNBs only and was
based on IMSI based lookup.
based on IMSI based lookup.
New Behavior: From release 15.0 onward, F2F Handoff has been supported for Closed, Hybrid, and Open Mode
HNBs. IMSI based look-up has been replaced by target Cell-ID based look up.
HNBs. IMSI based look-up has been replaced by target Cell-ID based look up.
Cisco HNB-GW has been enhanced to support the Femto to Femto Handoff via Core Network (CN) feature where a
mobile in connected mode moves from the coverage area of one Home NodeB (HNB) to another HNB connected to the
same system (ASR5K).
mobile in connected mode moves from the coverage area of one Home NodeB (HNB) to another HNB connected to the
same system (ASR5K).
Earlier, the HNB-GW supported hand-in for closed mode HNBs. In such case, hand-in is allowed for an IMSI if it is the
owner (i.e. it is the first IMSI in the whitelist of the HNB) of the target HNB. Also, handin is allowed if the IMSI is not
the owner of the target HNB but is not present in the whitelist of any other HNB known to the HNB-GW. Now, the
HNB-GW will be modified to select at target HNB using the target Cell ID information. In this case, hand-in is
therefore supported for open and hybrid mode HNBs as well along with closed mode HNBs.
owner (i.e. it is the first IMSI in the whitelist of the HNB) of the target HNB. Also, handin is allowed if the IMSI is not
the owner of the target HNB but is not present in the whitelist of any other HNB known to the HNB-GW. Now, the
HNB-GW will be modified to select at target HNB using the target Cell ID information. In this case, hand-in is
therefore supported for open and hybrid mode HNBs as well along with closed mode HNBs.
The HNB-GW support for the Femto to Femto Handoff via CN is in accordance with the following standards:
3GPP TS 23.060 Section 6.9.2.2.2: 3rd Generation Partnership Project; Technical Specification Combined Hard
Handover and SRNS Relocation Procedure
Paging Optimization
The Cisco HNB-GW has been enhanced to support paging optimization such that it detects failure to page the last HNB
where UE was registered and then automatically fan-out to location area (LA)/routing area (RA).
where UE was registered and then automatically fan-out to location area (LA)/routing area (RA).
HNB-GW supports throttling of outgoing paging messages on IuH interface for closed, open, and hybrid mode HNBs.
A fan-out approach has been implemented in HNB-GW such that paging messages are forwarded to a small set of
HNBs, having probability of UE in its cell, detecting failed paging and then forwarding the paging message to a larger
set of HNBs.
A fan-out approach has been implemented in HNB-GW such that paging messages are forwarded to a small set of
HNBs, having probability of UE in its cell, detecting failed paging and then forwarding the paging message to a larger
set of HNBs.
Important:
It is assumed that IMSI of the UE is available in the HNB-GW if the UE has some context in HNB-
GW.