Protocol Sequence - RRC State Change

(1) UE <--> NW : Registration (Combined or Non-Combined)

(2) UE <--> NW : < IDLE >

(3) UE  : < Make a MO Packet Call >

(4) UE --> NW : RRC CONNECTION REQUEST

(5) UE <-- NW : RRC CONNECTION SETUP

(6) UE --> NW : RRC CONNECTION SETUP COMPLETE

(7) UE --> NW : GMM SERVICE REQUEST

(8) UE <-- NW : AUTHENTICATION AND CIPHERING REQUEST

(9) UE --> NW : AUTHENTICATION AND CIPHERING RESPONSE

(10) UE <-- NW : SECURITY MODE COMMAND

(11) UE --> NW : SECURITY MODE COMPLETE

(12) UE --> NW : ACTIVATE PDP CONTEXT REQUEST

(13) UE <-- NW : RADIO BEARER SETUP

(14) UE --> NW : RADIO BEARER SETUP COMPLETE

(15) UE <-- NW : ACTIVATE PDP CONTEXT ACCEPT

(16) NW : Trigger for DCH -> PCH transition (e.g, no user data for a certain time period)

(17) UE --> NW : PHYSICAL CHANNEL RECONFIGURATION

(18) UE <-- NW : PHYSICAL CHANNEL RECONFIGURATION COMPLETE

(19) UE <--> NW : < Cell PCH or URA PCH >

(20) UE : Trigger for Cell PCH -> FACH transition (e.g, Request for data transmission)

(21) UE --> NW : CELL UPDATE

(22) UE <-- NW : CELL UPDATE CONFIRM

(23) UE --> NW : UTRAN MOBILITY INFORMATION CONFIRM

(24) UE <--> NW : < Cell FACH >

(25) NW : Trigger for FACH -> DCH transition (e.g, Data rate increase)

(26) UE <-- NW : PHYSICAL CHANNEL RECONFIGURATION

(27) UE --> NW : PHYSICAL CHANNEL RECONFIGURATION COMPLETE