Manual

CN Initiated RANAP Reset Procedure
This procedure is applicable for HNB-initiated RANAP Reset procedure between HNB, HNB-GW, and
SGSN/MSC in core network.
The following text describes the call flow for HNB-initiated RANAP Reset procedure:
1
CN (SGSN/MSC) sends RANAP-RESET command message to HNB-GW for a session.
2
On receiving RANAP-RESET from CN, the HNB-GW starts Guard timer for configured timeout duration.
3
HNB-GW identifies the all affected Iu connections and sends RUA-DISCONNECT message to HNB.
4
On expiry of Guard timer the HNB-GW sends the RESET-ACK message to CN.
HNB-GW Initiated RANAP Reset Procedure
This procedure is applicable for HNB-GW-initiated RANAP Reset procedure between HNB, HNB-GW, and
SGSN/MSC in core network.
The HNB-GW initiates RESET towards CN node in following scenarios:
•
The HNB-GW is reloaded or service restarted and SCCP Subsystem Number (SSN) allowed from CN
(SGSN/MSC) node is received.
•
The received SSN Prohibited or Point-code Address Inaccessible indication comes for a CN node,
HNB-GW start a configurable timer.
•
If SSN allowed indication comes before timer expires, the timer is stopped.
•
On timer expiry HNB-GW deletes all SCCP connections towards the CN node.
•
If SSN Allowed indication comes after timer expiry, HNB-GW sends RANAP-RESET command
message to the CN node.
The RANAP-RESET from HNB-GW is sent only if HNB-GW-initiated RANAP-RESET is configured in
HNB-GW service.
CBS Call Procedures
This section describes the HNB/HNB-GW requirements for Cell Broadcasting Service (CBS) in addition to
the network-initiated call procedures for CBS.
HNB Requirements for CBS
Following are the requirements from HNB side for CBS to take place:
•
HNB includes "Service Area for Broadcast" information element (IE) in HNB REGISTRATION
REQUEST message.
•
"Service Area" in the SABP messages needs to be same as that of HNB Register request.
•
HNB Processes SABP messages received from HNB-GW and responds back with success/failure to
HNB-GW.
•
HNB is responsible for storage and scheduling of CBS messages.
HNB-GW Administration Guide, StarOS Release 19
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HNB Gateway in Wireless Network
CBS Call Procedures