Cisco ASR 5000 Series - Page 195

ASN Gateway Overview
ASN Call Procedure Flows ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-02
Figure 55. Controlled Inter-ASN Gateway Handover Procedure - Action Phase
Serving
ASN BS
Anchor
ASN-GW
MS/SS
DATA
2
4
5
1
3
8
9
13
14
Target
ASN BS
Non-Anchor
Target ASN-GW
3
4
10
11
12
Table 39. Controlled Inter-ASN Gateway Handover Procedure - Action Phase Description
Step
Description
1
MS sends a MOB_MSHO-IND message to the serving ASN BS.
2
Serving ASN BS sends a Handover Confirm message to the target ASN BS.
3
Target ASN BS sends a Handover Acknowledge message to the serving ASN BS.
4
MS moves off of the serving ASN Gateway and re-enters the network through target ASN BS.
5
Target ASN BS sends a Path Registration Request message to the target non-anchor ASN Gateway.
6
Target non-anchor ASN Gateway forwards the Path Registration Request message to the anchor ASN Gateway.
7
Anchor ASN Gateway sends a Path Registration Response message to the target non-anchor ANS GW.
8
Target non-anchor ASN Gateway forwards the Path Registration Response message to the target ASN BS.
9
Target ASN BS sends a Path Registration Acknowledge message to the target non-anchor ASN Gateway.