volte ims-tas design workshop - part ii use cases v01
DESCRIPTION
imsTRANSCRIPT
![Page 1: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/1.jpg)
Company Confidential1 © 2014 NSN IMS/VoLTE Workshop / Curitiba / 2014-10-20 / HCK
Global CoE Malaysia
IMS/VoLTE Workshop
Curitiba, 2014-10-20
Part II: Use Cases
![Page 2: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/2.jpg)
Registration
![Page 3: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/3.jpg)
Registration – Home PLMN
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS
MGW
MGCF
MGW
3G-RAN
CAP
SCP
HLR-FE
MME
SGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TASSp
A
DNS
S6a
1 EPS Attach: Step1-16 of TS23.401-5.3.2.1-12 Combined CS Attach over SGs (TS23.272-5.2)3
4
5
6
7
EPS Attach: Step17-26 of TS23.401-5.3.2.1-1
8
P-CSCF Discovery (E.1.1 of 23.228)
9
IMS Registration (Fig 5.1 of 23.228)
9'
ISC: IFC=TAS’s FQDN+Port#; Resolve TAS’s FQDN to IP Addr
ISC 3rd Party Registration
10
Download A’s VoIP Profile from HSS (or use default one in TAS)
11
If MMTel profile in HSS, UDR/UDA
12
If MMTel in HLR, UL or RD (based on VLRDLTYPE in SGP)Create/UPdate VLR/SPD
200 OK
if UserType=IPSMGW, ATM to update IP-SM-GW Address in HLR
1 XX X
2 XX X
3 XX X
4
5 XX XX
6 XX
7 XX
8 XX
9 XX9' XX
10
11 XX
12 XX
![Page 4: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/4.jpg)
Registration - Roaming with eSRVCC
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
Mg/j
PCRF
S/PGW
x-CSCF
Mn
Mb
Mp
ENUM
MGCF
HLR-FE
MME
SGs/Sv
Mn
C
MSS
CAP
CTAS
Sp
A
DNS
S6a
Rx
Gx
S1-U
MME
SGs/Sv
S/PGW
VMSS
MGW
eNb
vPCRFIq
BGWATGW
Mx
P-CSCF
IBCF
ATCFIx
DRA
S9
S6a
Gm
BGWATGW
Ix
Iq
DRA
Ici
Izi
Visited Network Home Network
Mx
P-CSCF
IBCF
HSS-FE
1 EPS Attach: TS23.401-5.3.2.1-12
P-CSCF Discovery; SIP REGISTER3
If ATCF is included, ATCF Inserts Feature-Cap* to REGISTER4
IMS Registration (Fig 5.1 of 23.228)5
IFC trigger SCC AS Registration (ATCF’s info in Feature-Cap*)6
Get VoIP Profiles from HSS or use default one in TAS7
Create/UPdate VLR/SPD
8
If EPC HSS ≠ IMS HSS, get STN-SR from EPC HSS10
Ma: MESSAGE {STN-SR, ATU-STI, C-MSISDN}
9
Query DNS for ATCF-MGMT-URI11
If Sub’s STN-SR≠ATCF’s STN-SR, Update STN-SR (EPC HSS)
12
Update ATCF flag iin SPD
ATCF
Establish Local Breakout Default Bearer for IMS Signaling
**If Combined HSS, SRVCC info: STR-SR, SRVCC-capability
2X X
1 XX X
X
3X X X
4
5 XX X
6 XX
8 XX X 8'9
Get MMTel (& SRVCC info**) Profile from HSS or HLR7X X
10X X
*Feature-Cap: STN-SR, ATCF-MGMT-URI and ATCF-PATH-URI
11 XX
12 XX
13
14
13 XX X
MGW
14
MGW
![Page 5: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/5.jpg)
Figure 5.1 of TS23.228: IMS Registration
P-CSCF HSS I-CSCF
1. Register 2. Register
3. Cx-Query/Cx-Select-Pull
UE
Visited Network Home Network
4. Cx-Query Resp/Cx-Select-Pull Resp
7. Cx-Put Resp/Cx-Pull Resp
5. Register
9. 200 OK 10. 200 OK
11. 200 OK
6. Cx-put/Cx-Pull
S-CSCF
8. Service Control
![Page 6: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/6.jpg)
Figure 5.2-1 of TS23.272: SGs Attach
1. Attach Request
3. Derive VLR number
4. Location Update Request
5. Create SGs association
7. Location Update Accept
UE MME HSS MSC/VLR
2. Step 3 to step 16 of the Attach procedure specified in TS 23.401
6. Location update in CS domain
8. Step 17 to step 26 of the Attach procedure specified in TS 23.401
![Page 7: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/7.jpg)
VoLTE Voice Call
![Page 8: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/8.jpg)
VoLTE (in PS) to VoLTE (in PS) in D-TADS
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
PSTN/PLMN
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS
MGW
MGCF
MGW
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSSCAP
C/J
P-CSCF
TAS
Gm
Sp
1 INVITE RURI:B
4
2 A’s IFC=TAS’s FQDN+Port#; Resolve TAS’s FQDN to IP Addr3
6
5
SCC AS: Call Anchoring; TAS: Orig. Services Execution
7
INVITE RURI:B (ISCUNI)
INVITE RURI:B (ISCNNI)
8
Query ENUM for B’s MSISDN
9
ENUM Result: B’s SIP URI
10
Route to B’s S-CSCF: Step3-6 Figure 5.11 of TS23.228
14
11
B’s IFC=TAS’s FQDN+Port#; Resolve TAS’s FQDN to IP Addr
13
INVITE RURI:B (ISCNNI)
TAS: HLRENQ - SRI/Res(TCSI)
OPTIONS B OK; INVITE RURI:B (ISCUNI)
SCC AS T-ADS: PS Hunt - SIP Registered
15
X
VoiceOverPS Check (if B’s SGP VoIP over PS Check=Y) 16
TAS: Term. Services Execution; SCC AS: Call Anchoring
AB
1 X X
DNS
X 2 X
X 3 X
X 5 X
X 6 X
X 7 XX 8 X
X 9 X
X 10
13
X X11
15
S6a
X
XXX
16 XXX X
X X14
12 TAS: GW Services Execution X 12 X
X X4
![Page 9: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/9.jpg)
VoLTE to VoLTE (SIP Deregistered)
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Sp
1 Steps 1-9 in VoLTE to VoLTE
A B
DNS
S6a
MGW MGWCC
X 1 X X
X 2
5
3
X
X XX
9
2
3
10
5
11
7
8
9
13
INVITE RURI:B (ISCNNI)TAS: HLRENQ - SRI/Res(T-CSI)
SRI(Suppress TCSI)/Res(MSRN)INVITE MSRN (ISCNNI)
SCC AS T-ADS: PS Hunt - SIP Not Registered
INVITE MSRN (Mg)
Mobile Terminating Call
INVITE Prefix+CdPN (ISCNNI)Forward to BGCF -> MGCF: INVITE Prefix+CdPN (Mj)MGCF: Remove Prefix - HLRENQ: SRI/Res(TCSI)
CSRN=MSRN
CSRN=Prefix+CdPN
X X
4 TAS: GW Services (T-CSI) Execution X 4 X
6 SCC AS T-ADS: CS Hunt – Disconnect T-CSI Services X 6 X
77 TAS: HLRENQ - SRI/Res(T-CSI) X X
8 TAS: GW Services (T-CSI) Execution X 8 X
9X X
10 XX
11 XX
7 XX
8 XX
11
12
SRI(Suppress TCSI)/Res(MSRN)
IAM MSRN (BICC)
10 MGCF: GW Services (T-CSI) Execution 10 X
11X X
12X X
X
9X X
13X X
![Page 10: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/10.jpg)
VoLTE to VoLTE Out of LTE Coverage
Rx
eNb
Cx ISC
Gx
Sh
S1-US1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Gm
Sp
1 Steps 1-9 in VoLTE to VoLTE
A B
DNS
S6a
MGW MGWCC
X 1 X X
X 2
5
3X
X XX
2
3
5
INVITE RURI:B (ISCNNI)TAS: HLRENQ - SRI/Res(T-CSI)
SCC AS T-ADS: PS Hunt - SIP Registered
X X
4 TAS: GW Services (T-CSI) Execution X 4 X
6
7 VoPS=N or OPTIONS/INVITE errors TAS: Term. Services Execution; SCC AS: Call Anchoring
7 XXX
X X6
X X
8 SCC AS T-ADS: CS Hunt – Disconnect T-CSI Services X 8 X
9 Steps 7-13 in VoLTE to VoLTE Not Registered X 9 XX X X X X
![Page 11: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/11.jpg)
VoLTE to VoLTE CFU VoLTE
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS
MGW
MGCF
MGW
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSSCAP
C/J
P-CSCF
TAS
Gm
Sp
AC
DNS
S6a
6
5
7
CFU Pending - INVITE C# (ISCNNI)
Step (6) to (14) of VoLTE to VoLTE
OPTIONS C OK; INVITE RURI:C (ISCUNI)
1 Steps 1-9 in VoLTE to VoLTE X 1 X X
X 2
3
X
X XX
2
3INVITE RURI:B (ISCNNI)TAS: HLRENQ - SRI/Res(T-CSI,CFU) X X
4 TAS: GW Services (T-CSI) Execution X 4 X
5 XX
7 XXX X
6 XX
![Page 12: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/12.jpg)
VoLTE to Pure CS
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Gm
Sp
1 INVITE RURI:B
4
2 A’s IFC=TAS’s FQDN+Port#; Resolve TAS’s FQDN to IP Addr3
6
5
SCC AS: Call Anchoring; TAS: Orig. Services Execution
7
INVITE RURI:B (ISCUNI)
INVITE RURI:B (ISCNNI)
8
Query ENUM for B’s MSISDN
9
ENUM Result: Not found
9
10
X
AB
1 X X
DNS
X 2 X
X 3 X
4
X 5 X
X 6 X
X 7 X
8
9
S6a
XBreakout Call to BGCF; INVITE B (Mj) to MGCFGW Services: SRI/Res(TCSI/MSRN)BICC IAM(MSRN)->Mobile Terminating Call
X
X
10 XX
X
X
MGW MGWCC
![Page 13: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/13.jpg)
CS Homing SCP or Forced-Routing) to VoLTE
PSTN/PLMN
A
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Gm
Sp
B
DNS
S6a
MGW MGWCC
1 IAM B’s MSISDN
GMSS: HLRENQ: SRI/Res(TCSI,OSSS etc.)2
B is VoLTE subscriber (based on T-CSI/OSSS) à Homing SSET3
B is Active in SPD (Sh Query HSS if B not found in SPD
4
Connect: Prefix (IMS) + CdPN
5
6
MGCF removes Prefix, send INVITE RURI:B (Mg) to I-CSCF
4
7Step (6) to (16) of VoLTE to VoLTE8
Force Routing – Connect: IMS Prefix + CdPN
Trigger (IDP) to Homing SCPHoming SCP
Forced Routing
1 XX
2 XX
3
4 XX
HMG
5 XX
6 XX
4
7 XX X8 XX X
![Page 14: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/14.jpg)
CS (Homing Forced Routing) to VoLTE Deregistered
PSTN/PLMN
A
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
ENUM DNS MGCF
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Sp
B
DNS
S6a
MGWC
1 IAM B’s MSISDN
GMSS: HLRENQ: SRI/Res(TCSI,OSSS etc.)2
B is VoLTE subscriber (based on T-CSI/OSSS) à Homing SSET3
MGCF removes Prefix, send INVITE RURI:B (Mg) to I-CSCF
4
5Step (6) to (12) of VoLTE to VoLTE6
Force Routing – Connect: IMS Prefix + CdPNForced Routing
1 XX
2 XX
3
HMG
4
5 XX X
6
3G-RAN
CMGWC C
Step (5) to (12) of VoLTE to VoLTE in CS78
7 XX X
Mobile Terminating Call 8 XX
![Page 15: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/15.jpg)
CS (Homing Optimal Routing) to VoLTE Deregistered
PSTN/PLMN
A
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
ENUM DNS MGCF
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Sp
B
DNS
S6a
MGW MGWC
1 IAM B’s MSISDN
GMSS: HLRENQ: SRI/Res(TCSI,OSSS etc.)2
B is VoLTE subscriber (based on T-CSI/OSSS) à Homing SSET3
B is NOT Registered
4
CONTINUE
5
8
Trigger (IDP) to Homing SCP
IDP Relay
1 XX
2 XX
34 XX
HMG
5 XX
6X
3G-RAN
Relay IDP to SCP
67
MAP ATSI to HLR get T-CSI 6 XX
7X X
Retriggering IDP to SCP
67
CONTINUE 6 XX
7X X
GMSS Retriggering
9 Mobile Terminating Call 8 XX
X
![Page 16: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/16.jpg)
VoLTE to VoLTE SIP Deregistered (C-TADS)
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Sp
1 Steps 1-9 in VoLTE to VoLTE
A B
DNS
S6a
MGW MGWCC
X 1 X X
X 2
3
X
X XX
9
2
3
10
5
11
7
8
9
13
INVITE RURI:B (ISCNNI)TAS: HLRENQ - SRI/Res(T-CSI)
SRI(Suppress TCSI,CFO=Y)/Res(MSRN)INVITE MSRN (ISCNNI)
TAS: Terminating Services Execution
INVITE MSRN (Mg)
Mobile Terminating Call
INVITE Prefix+CdPN (ISCNNI)Forward to BGCF -> MGCF: INVITE Prefix+CdPN (Mj)MGCF: Remove Prefix - HLRENQ: SRI(TCSI=N,CFO=Y/Res(MSRN)
CSRN=MSRN
CSRN=Prefix+CdPN
X X
4 TAS: GW Services (T-CSI) Execution X 4 X
6 SCC AS C-TADS: SIP Not Registered/VoPS=N/Error
7X X
8 XX
9 XX
7 XX
8 XX
12 IAM MSRN (BICC, CFO=Y) 12X X
9X X
13X X
X 5 X
6
![Page 17: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/17.jpg)
VoLTE (in CS with Originating Homing) to VoLTE
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TASSp
BA
DNS
S6a
MGW MGWCC
1 Setup B’s MSISDNA is VoLTE sub with O-CSI that trigger to Homing SCP2
3
4
Connect: Prefix (IMRN) + CdPN
56
Remove Prefix, INVITE B, with “orig” in Route, SDP (Mg)
8 Step (5) to (16) of VoLTE to VoLTE
Forward to Originating S-CSCF, O_iFC to TAS
Implicit Registration for A7 Originating Service Execution
1 XX
HMG
2 XX
3 XX
4 XX X
5 XX
6 XX
7
8 XX
![Page 18: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/18.jpg)
VoLTE Emergency Call
PSTN/PLMN
A
Rx
eNb
Cx ISC
Gx
Sh
S1-U
S1-MME
S11
Mw
UP IPBB
Mg/j
PCRF
S/PGW
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
Gm
ENUM DNS MGCF
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
C/J
P-CSCF
TAS
Sp
B
DNS
S6a
MGW MGWCC
HMG
1
Establish Emergency PDN Connectivity (TS24.301)
5
2
3
6
4IMS Emergency Registration (“sos” in Contact, TS24.229: 5.1.6.2)IMS Emergency INVITE (RURI=urn:service:sos) TS24.229-5.1.6.8)
UE detects EC, Domain Selection (TS23.167-H.5) – PS selected
Routing Decision – forward INVITE to E-CSCFMap PANI to PSAP number from LRF, send INIVTE (PSAP) to MGCF
5'
6'
Routing Decision – forward INVITE to S-CSCF -> TASMap PANI to PSAP number, send INIVTE (PSAP) to MGCF
7 IAM (PSAP) to PSTN
1
1 XX X
2 XX X
3 XX
5X
E-CSCF
X
6X X X
5'X X X
6'X X X
7X X
X
If UE is not Attached, step(2) should include Emergency AttachUE may decide to skip step (3) if no credential available, or if UE is in home network and already normal registeredS-CSCF/TAS-based EC routing (step(5') & (6')is only possible for registered non-roaming UEIn case UE is not able to detect EC, step(1),(2)&(3) will not be performed, INVITE in step (4) will be sent as normal call. P-CSCF should detect EC and make routing decision based on the roaming status of the UE
Note:a)b)
c)
d)
![Page 19: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/19.jpg)
VoLTE SRVCC
![Page 20: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/20.jpg)
SRVCC Home Network
Rx
CxISC
Gx
Sh
S1-MME
S11
Mw
Mg/j
PCRF
HSS-FE
x-CSCF
CAP
Mn
Mb
Mp
ENUM DNS MGCF
3G-RAN
CAP
SCP
HLR-FE
MMESGs/Sv
Mn
C
MSS
CAP
CTAS
SpDNS
S6a
MGW MGWCC
2
Measurement Report1
3HO Required (STN-SR)
4'
Target RAN Reservation
5'INVITE (prefix+STN-SR, PAI=B, IP3)
6'
O_iFC à INVITE (STN-SR, PAI=B, IP3)
7'
Retrieve B’s Call Log: reINVITE (A, IP3)/200 OK
5
8'
HO Response/Command
Release source leg (BYE/200 OK)
SCC AS
eNb
S1-U
S/PGW
Gm
A
B
P-CSCF
Remote LegSource LegTarget Leg
GmIP1
IP2
IP3 IP4 IP5
SRVCC
1 XX2 XX
3 XX
4' XX X
5' XX
200 OK (IP1)
4 4 XX X
6' XX X X
7' XX X
HO Detect/Complete 5 XX
6 XX X6 Release source leg
8' XX
![Page 21: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/21.jpg)
eSRVCC Roaming
Rx
eNb
CxISC
Gx
Sh
S1-U
S1-MME
S11
Mw
Mg/j
PCRF
S/PGW
x-CSCF
Mn
Mb
Mp
ENUM
MGCF
HLR-FE
MME
SGs/SvMn
C
MSS
CAP
CTAS
Sp
A
DNS
S6a
Rx
Gx
S1-U
MME
SGs/Sv
S/PGW
eNb
vPCRFIq
BGWATGW
MxIBCF
Ix
DRA
S9
S6a
Gm
BGWATGW
Ix
Iq
DRA
Ici
Izi
Visited Network Home Network
Mx
P-CSCF
IBCF
HSS-FE
ATCF
1 XX
MGW
RAN
MGW
P-CSCFATCF
VMSSI-CSCF
MGCF
eSRVCC
Remote LegSource LegTarget Leg
1 RF Measurement2 PS to CS Access Transfer Request
4
3 Target RAN Reservation
4'
5'
5
7
INVITE (prefix+STN-SR, PAI=A, IP3)
INVITE (ATU-STI) – Update SCC AS
HO Command
Release Source leg (BYE/200OK)
2 XX
XX 3
XX
Tuning to Target RF
XX
4'
5
5' XX
XX 7
6 XX6
Reconfigure ATGW’s Media/200 OK (IP2)
IP3 IP2
4
X
Gm
5'
IP1
![Page 22: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/22.jpg)
VoLTE SMS
![Page 23: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/23.jpg)
SMS over IMS (SMSC Interworking)
Rx
CxISC
Gx
Sh
S1-MME
S11
Mw
Mg/j
PCRF
HSS-FE
x-CSCF
Mn
Mb
Mp
ENUM DNS MGCFCAP
SCP
HLR-FE
MMESGs/Sv
Mn
CAP
J
SpDNS
S6a
MGW MGW
eNb
S1-U
S/PGW
Gm
A B
P-CSCF
SMSC
3G-RAN
1 MESSAGE (RP-MO-Data)
4
2 IFC=TAS; MESSAGE (RP-MO-Data)3
5
SMSIP Originating Authorization
6
Originating Services Execution
7
MOFwdSM(RP-MO-Data/RP-Ack)
8
9
MESSAGE (RP-Ack)/200 OK
12
10
SRIforSM/Res
11
SRIforSM_ResIP-SM-GW’s addr)
MTFwdSM(RP-MT-Data)
MESSAGE(RP-MT-Data)/200 OK14
Domain Selection; Term Services Execution13
202 Accepted
SRIforSM -> HLR-> IP-SM-GW
MTFwdSM(RP-Ack)
Gm
1 XX X
2 XX
3
4 XX X X
5 XX
6 XX
C
HCAP
MSS
C
TASIP-SM-GW
8 XX X
7 XX X X
9 XX
10 XX
15
MSSAGE(RP-Ack)/202 Accepted
11 XX
13 XX X X
14 XX X X
15 XX
12 XX
E
![Page 24: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/24.jpg)
SMS over IMS (Direct)
Rx
CxISC
Gx
Sh
S1-MME
S11
Mw
Mg/j
PCRF
HSS-FE
x-CSCF
Mn
Mb
Mp
ENUM DNS MGCFCAP
SCP
HLR-FE
MMESGs/Sv
Mn
CAP
J
SpDNS
S6a
MGW MGW
eNb
S1-U
S/PGW
Gm
A B
P-CSCF
SMSC
3G-RAN
Gm
1 XX X
2 XX
3
C
HCAP
MSS
C
TASIP-SM-GW
E
4 XX X
5 XX
7X X
1 MESSAGE (RP-MO-Data)
4
2 IFC=TAS; MESSAGE (RP-MO-Data)3
5
SMS Originating Authorization
7
Originating Services Execution
9
11
MESSAGE (RP-MT-Data)
12
HLR -> IP-SM-GW
13
SRIforSM/Res (IP-SM-GW address)
MESSAGE(RP-MT-Data)/200 OK
Domain Selection - IMS; Termination Services Execution
202 Accepted
SRIforSM
IFC=TAS; MESSAGE (RP-MT-Data)
10
8
6RP-MO-Data to RP-MT-Data6
8X X
9X X
10X X
11X X
5 XX
14 MSSAGE(RP-Ack)/202 Accepted
13 XX X X
14 XX X X
![Page 25: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/25.jpg)
SMS over IMS (Direct) – Reroute to CS
Rx
CxISC
Gx
Sh
S1-MME
S11
Mw
Mg/j
PCRF
HSS-FE
x-CSCF
Mn
Mb
Mp
ENUM DNS MGCFCAP
SCP
HLR-FE
MMESGs/Sv
Mn
CAP
J
SpDNS
S6a
MGW MGW
eNb
S1-U
S/PGW
Gm
A B
P-CSCF
SMSC
3G-RAN
Gm
1 XX X
2 XX
3
C
HCAP
MSS
C
TASIP-SM-GW
E
4 XX X
5 XX
6X X
7X X
8X X
9X X
10X X
11 XX
12 XX X
14X
1 MESSAGE (RP-MO-Data)
4
2 IFC=TAS; MESSAGE (RP-MO-Data)3
5
SMS Originating Authorization
6
Originating Services Execution; RP-MO-Data to RP-MT-Data
7
8
10
MESSAGE (RP-MT-Data)
14
11
HLR à IP-SM-GW
12
SRIforSM/Ack (IP-SM-GW addr)Domain Selection – IMS; Term. Services Execution
15
MESSAGE(RP-MT-Data)/No Res
Second Route (MSC)
202 Accepted
SRIforSM
IFC=TAS; MESSAGE (RP-MT-Data)
9
13
MT-ForwardSM(RP-MT-Data/RP-Ack)
MAP RSMDS (Update Flag)
13
MAP
15 XX
XX
![Page 26: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/26.jpg)
SMS over IMS to pure CS
Rx
CxISC
Gx
Sh
S1-MME
S11
Mw
Mg/j
PCRF
HSS-FE
x-CSCF
Mn
Mb
Mp
ENUM DNS MGCFCAP
SCP
HLR-FE
MMESGs/Sv
Mn
CAP
J
SpDNS
S6a
MGW MGW
eNb
S1-U
S/PGW
Gm
A B
P-CSCF
SMSC
3G-RAN
Gm
1 XX X
2 XX
3
C
HCAP
MSS
C
TASIP-SM-GW
E
4 XX X
5 XX
7X X
8X X
9X X
10X
MAP
XX
1 MESSAGE (RP-MO-Data)
4
2 IFC=TAS; MESSAGE (RP-MO-Data)3
5
SMS Originating Authorization
6Originating Services Execution
7
RP-MO-Data to RP-MT-Data
8
10
MESSAGE (RP-MT-Data)
202 Accepted
SRIforSM/Res(VMS Addr)
MESSAGE (RP-MT-Data)9
6
MT-ForwardSM(RP-MT-Data/RP-Ack)
![Page 27: VoLTE IMS-TAS Design Workshop - Part II Use Cases v01](https://reader033.vdocuments.us/reader033/viewer/2022061323/5695d24f1a28ab9b0299eab8/html5/thumbnails/27.jpg)
Thank You