Cisco Cisco Packet Data Gateway (PDG) Guía Para Resolver Problemas
ASN Gateway Overview
▀ ASN Call Procedure Flows
▄ Cisco ASR 5000 Series Access Service Network Gateway Administration Guide
OL-22953-01
Figure 21. Controlled Inter-ASN Gateway Handover Procedure - Action Phase
S e rv in g
A S N B S
A n c h o r
A S N -G W
M S /S S
D ATA
2
4
5
1
3
8
9
1 3
1 4
Ta rg e t
A S N B S
N o n -A n c h o r
Ta rg e t A S N -G W
3
4
1 0
11
1 2
Table 11. 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.