ims mo sip signaling flow with qos
DESCRIPTION
IMS MO SIP Signaling Flow with QoSTRANSCRIPT
IMS MO SIP Signaling Flow with QoS IP Multimedia Subsystem Series
P-CSCF Discovery Procedures (A)
UE SGSN GGSN
(1) Active PDP Context Request
(2) Create PDP Context Request
(4) Create PDP Context
Response (+ P Address)
(5) Activate PDP Context
Accept (+ P Address)
(3) Obtain P-CSCF Address from configuration database
P-CSCF Discovery Procedures (B)
(1) PDP Context Activation
Procedure （ as in A)
UE
SGSN
DHCP
DNS
GGSN
(1) PDP Context Activation Procedure(as in A)
(2) DHCP Query & Resp
(3) DNS Query & RespDefault PDP
Context
Mobile Originating
P-CSCF (PDF)
(3) Invite
(4) 100 Trying
UE
SGSN
GGSN
(1) Invite
(2) 100 Trying
S-CSCF
(6) Invite
(7) 100 Trying
AS
(5) Trigger AS based on IFC
P-CSCF (PDF)
(9) 183 Session Progress
UE
SGSN
GGSN
(11) 183 Session Progress (+ Media
Authorization Token)
S-CSCF
(8) 183 Session Progress
Mobile Originating (Cont’d)
(10) Authorize QoS Resources
Mobile Originating (Cont’d)
P-CSCF (PDF)
(14) PRACK
(17) 200 (OK)
UE
SGSN
GGSN
(12) PRACK
(18) 200 (OK)
S-CSCF
(15) PRACK
(16) 200 (OK)
(13) Resource Reservation
Mobile Originating (Cont’d)
P-CSCF (PDF)UE
SGSN
GGSN S-CSCF
(a) Activate PDP Context
(b) Create PDP Context
(c) COPS: REQ
(d) COPS: DEC
(e) COPS: RPT
(f) Response
(g) Accept
Mobile Originating (Cont’d)
P-CSCF (PDF)
(20) Update
(23) 200 (OK)
UE
SGSN
GGSN
(19) Update
(24) 200 (OK)
S-CSCF
(21) Update
(22) 200 (OK)
P-CSCF (PDF)
(26) 180 Ringing
UE
SGSN
GGSN
(27) 180 Ringing
S-CSCF
(25) 180 Ringing
Mobile Originating (Cont’d)
Mobile Originating (Cont’d)
P-CSCF (PDF)
(29) PRACK
(32) 200 (OK)
UE
SGSN
GGSN
(28) PRACK
(33) 200 (OK)
S-CSCF
(30) PRACK
(31) 200 (OK)
Mobile Originating (Cont’d)
P-CSCF (PDF)
(39) ACKUE
SGSN
GGSN
(36) QoS Authorizati
on
S-CSCF
(34) 200 (OK)
(Invite)
(40) ACK
(35) 200 (OK)
(Invite)
(37) 200 (OK) (Invite)
(38) ACK(a) COPS:
DEC
(b) COPS: RPT
Mobile Originating (Cont’d)
P-CSCF (PDF)
UE
SGSN
S-CSCF
Media Stream
GGSN
Mobile Originating (Cont’d)
P-CSCF (PDF)
(5) Bye
(8) 200 (OK)
UE
SGSN
GGSN
(1) Bye
(9) 200 (OK)
S-CSCF
(6) Bye
(7) 200 (OK)
(2) Release PDP
(3) Rls Resp(4) Remove
Res Rsrv
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