Handle in MS


MS start and send “Active PDP context request” to SGSN
-Provide QoS parameter
-Provide a APN-NI
-Provide a static IP or null
Receive  ACCEPT from SGSN
-If the QoS not accept by MS, then starts delete PDP context procedure.

Handle in SGSN

Check subscriber data
APN selection
-According to TS 23.060
-default APN,APN provide from MS and the APN subscribed in HLR
-APN-NI.APN-OI
Interrogate DNS
-Hostfile/Cache/DNS server
QoS negotiation
-QoS provided from MS, default QoS ,QoS subscribed in HLR
Send message “create PDP context request” to GGSN
RAB assignment
Send message “active PDP context accept” to MS
-Dynamic IP address
-QoS


Handle in GGSN

Check the APN provided by SGSN
QoS negotiation
Allocate a dynamic IP to the MS
Allocate a charging ID for the PDP context
Return a CREATE PDP CONTEXT ACCEPT message to SGSN
-Dynamic IP
-QoS
-Charging ID
-Other information
Update PDP context








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