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