Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
ASN Paging Controller and Location Registry Overview
▀ Introduction
▄ Cisco ASR 5000 Series Product Overview
OL-22938-01
Figure 67. Paging Operation Procedure Flow
ASN BS
ASN-GW/
Local-PC/DPF
MS/SS
1
4
2
ASN-GW/PC/LR
/FA/DPF
Serving ASN
5
6
Anchor ASN
3
7
8
9
10
Table 49. Paging Operation Procedure Flow Description
Step
Description
1
Data from HA arrives through the tunnel at the FA and its associated DPF. The Anchor DPF buffers the data.
2
Anchor Data Path Function (DPF) sends an R4 Initiate_Paging_Req message to Anchor PC/LR to request paging.
Optionally the R4 Initiate_Paging_Req message contains the QoS parameters of the flow for which the data arrived at the
Anchor DPF. This helps set priority treatment of the Paging operation based on the QoS parameters and flow types. The
Anchor DPF may have policies for triggering paging based on the QoS parameters for the data received. The Anchor DP
Function starts timer TInit_Page_Req.Note: When MS is in Idle Mode, if data not belonging to any saved Service Flow
(SF) of the MS arrives, the decision to initiate paging or not is on the basis of operator‘s setting.
Optionally the R4 Initiate_Paging_Req message contains the QoS parameters of the flow for which the data arrived at the
Anchor DPF. This helps set priority treatment of the Paging operation based on the QoS parameters and flow types. The
Anchor DPF may have policies for triggering paging based on the QoS parameters for the data received. The Anchor DP
Function starts timer TInit_Page_Req.Note: When MS is in Idle Mode, if data not belonging to any saved Service Flow
(SF) of the MS arrives, the decision to initiate paging or not is on the basis of operator‘s setting.