Proxy-Mobile IP
How Proxy Mobile IP Works in 3GPP Network ▀
Cisco ASR 5x00 Packet Data Network Gateway Administration Guide ▄
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Step
Description
15
The SGSN sends a Delete PDP Context Request message to the GGSN facilitating the data session. The message includes
the information elements necessary to identify the PDP context (i.e., TEID, and NSAPI).
16
The GGSN removes the PDP context from memory and the FA sends a Proxy Mobile IP Deregistration Request message to
the HA.
17
The GGSN returns a Delete PDP Context Response message to the SGSN.
18
The HA replies to the FA with a Proxy Mobile IP Deregistration Request Response.
19
The HA sends an RADIUS Accounting Stop request to the AAA server which the AAA server responds to.
20
The SGSN returns a Deactivate PDP Context Accept message to the MS.
21
The GGSN delivers the GGSN Charging Detail Records (G-CDRs) to a charging gateway (CG) using GTP Prime (GTPP).
Note that, though not shown in this example, the GGSN could optionally be configured to send partial CDRs while the PDP
context is active.
22
For each accounting message received from the GGSN, the CG responds with an acknowledgement.