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PDP-context Activation
Figure 39 PDP-context
Activation (Traffic Case)
1 An “active PDP context
request” is sent by the UE to the SGSN server
2 The SGSN server requests the UTRAN to setup a radio access bearer (RAB)
3 The request for a RAB is acknowledged by UTRAN
4 The SGSN server requests the MGW to create a GTP tunnel transfer point
5 A “create PDP context request” is sent from the SGSN server to the
GGSN
6 The GGSN server requests an IP address fro the AAA server (or similar)
7 GGSN sends a “create PDP context response” back to the SGSN server
8 An “active PDP context response” is sent back to the UE from the SGSN
server
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