E.2 Application usage of SIP

24.3903GPPRelease 17Stage 3TSUnstructured Supplementary Service Data (USSD) using IP Multimedia (IM) Core Network (CN) subsystem IMS

E.2.1 Procedures at the UE

E.2.1.1 3GPP PS data off

E.2.1.1.1 General

The requirements in subclause C.2.1.1.1 apply.

Additionally, the following requirements apply.

In case of SNPN, if the UE supports the 3GPP PS data off:

1) the UE can be configured with:

a) up to two indications of whether the USSI is a 3GPP PS data off exempt service for each subscribed SNPN whose entry exists in the "list of subscriber data", one indication is valid for the UE camping in the subscribed SNPN, and the other indication is valid for any non-subscribed SNPN the UE is camping in using the subscribed SNPN’s credentials; and

b) an indication of whether USSI is a 3GPP PS data off exempt service for PLMN subscription, valid for any non-subscribed SNPN the UE is camping in using the PLMN subscription; and

2) for a subscribed SNPN whose entry exists in the "list of subscriber data", the UE may support being configured with the indication of whether the USSI is a 3GPP PS data off exempt service using one or more of the following methods:

a) the USSI_exempt node of 3GPP TS 24.391 [13], if the UE is in the subscribed SNPN; and

b) the USSI_exempt_non_subscribed_SNPN node of 3GPP TS 24.391 [13], if the UE is in the non-subscribed SNPN.

For PLMN subscription, the UE may support being configured with the indication of whether the USSI is a 3GPP PS data off exempt service using the following method:

1) the USSI_exempt_non_subscribed_SNPN node of 3GPP TS 24.391 [13], if the UE is in the non-subscribed SNPN.

When the UE is only configured with the indication valid for the UE camping in the subscribed SNPN, the UE shall use this indication also when the UE is in the non-subscribed SNPN.

E.2.1.1.2 Enforcement

If the 3GPP PS data off status is "active", and the UE is not configured with indication that USSI is a 3GPP PS data off exempt service:

1) the UE shall terminate according to 3GPP TS 24.229 [6] any SIP dialog established according to subclause 4.5.4 or subclause 4.5.5 with a UE’s contact address containing an IP address associated with a 5GS QoS flow using NG-RAN;

2) the UE shall not invoke the procedures in subclause 4.5.4 with a UE’s contact address containing an IP address associated with a 5GS QoS flow using NG-RAN; and

NOTE 1: If the UE doesn’t invoke the procedures in subclause 4.5.4 due to conditions as described in bullet 2, the UE can attempt a request for an equivalent service via the CS domain – if supported and available – and, otherwise, the UE can attempt the service according to 3GPP TS 24.229 [13] and as described in subclause 4.5.4 via non-3GPP access.

3) if the UE registered a binding with IM CN subsystem, such that:

a) the contact address of the binding contains an IP address associated with a 5GS QoS flow using NG-RAN; and

b) the Contact header field of the binding contains the g.3gpp.nw-init-ussi media feature tag;

then:

a) the UE shall de-register the binding of a UE’s contact address containing an IP address associated with a 5GS QoS flow using NG-RAN from IM CN subsystem according to 3GPP TS 24.229 [6]; or

b) the UE shall re-register the binding of a UE’s contact address containing an IP address associated with a 5GS QoS flow using NG-RAN with IM CN subsystem with a Contact header field not including the g.3gpp.nw-init-ussi media feature tag according to 3GPP TS 24.229 [6].

NOTE 2: Which of the bullets a), and b) the UE performs is influenced by other 3GPP PS data off exempt services.

E.2.2 Procedures at the USSI AS

E.2.2.1 3GPP PS data off

The requirements in subclause C.2.2.1 apply.

Additionally, the following requirements apply.

When serving a UE in an SNPN using an entry of "list of subscriber data", an USSI AS supporting the 3GPP PS data off can be configured with up to two values of whether USSI is a 3GPP PS data off exempt service, one value is valid for the UE camping in the subscribed SNPN, and the other value is valid for the UE camping in the non-subscribed SNPNs with whom service agreements exist.

When the USSI AS is only configured with the indication of whether USSI is a 3GP PS data off exempt service for the UE camping in the subscribed SNPN, the USSI AS shall use this indication also when the UE is in the non-subscribed SNPN.

When serving a UE in an SNPN using PLMN subscription, an USSI AS supporting the 3GPP PS data off can be configured with a value of whether USSI is a 3GPP PS data off exempt service, valid for the UE camping in the non-subscribed SNPNs with whom service agreements exist.

Annex F (informative):
Change history

Change history

Date

TSG #

TSG Doc.

CR

Rev

Subject/Comment

Old

New

2011-04

Version 0.0.0 TS Skeleton

0.0.0

2011-05

Contains agreed P-CRs from CT1#71: C1-112245, C1-112246

0.0.0

0.1.0

2011-07

Contains agreed P-CRs from CT1#72: C1-112934, C1-112935, C1-112956

0.1.0

0.2.0

2011-09

Contains agreed P-CRs from CT1#73:C1-113450, C1-113451, C1-113590,

0.2.0

0.3.0

2011-10

Contains agreed P-CRs from CT1#74: C1-114351, C1-114411

0.3.0

0.4.0

2012-01

Changes the structure of the TS in order to allow for collection of alternative proposals: existing material in main part and Annex A (signalling flows) are shifted to new Annex B.

Contains agreed P-CRs from CT1#75: C1-115144, C1-115145, C1-115146, C1-115147, C1-115148, C1-115230.

0.4.0

0.5.0

2012-01

Editorial correction

0.5.0

0.5.1

2012-02

Contains agreed P-CRs from CT1#76: C1-120685, C1-120688, C1-120693, C1-120694, C1-120884

0.5.1

0.6.0

2012-05

Contains agreed P-CR from CT1#77: C1-121624

0.6.0

0.7.0

2012-06

Contains agreed P-CRs from CT1#78:C1-121884, C1-122234, C1-122236, C1-122236, C1-122237

0.7.0

0.8.0

2012-06

CT-56

CP-120281

Version 1.0.0 created by MCC for presentation to CT-56 for information

0.8.0

1.0.0

2012-08

Contains agreed P-CRs from CT1#79:C1-122529, C1-123260, C1-123261, C1-123267, C1-123353, C1-123420

1.0.0

1.1.0

2012-08

Editorial cleanup

1.1.0

1.1.1

2012-09

CT-57

CP-120608

Version 2.0.0 created by MCC for presentation to CT-57 for approval

1.1.1

2.0.0

2012-09

CT-57

Version 11.0.0 created by MCC after approval at CT-57

2.0.0

11.0.0

2012-12

CT-58

CP-120800

0002

3

USSI Cleanup of Alternatives

11.0.0

11.1.0

2012-12

CT-58

CP-120800

0003

2

USSI interaction with SIP user configuration

11.0.0

11.1.0

2012-12

CT-58

CP-120800

0013

1

Clean up of encoding USSD information as an XML document

11.0.0

11.1.0

2013-03

CT-59

CP-130105

0014

2

Clarifications and Corrections to USSI

11.1.0

11.2.0

2013-03

CT-59

CP-130105

0015

4

USSD Procedures clarifications and corrections

11.1.0

11.2.0

2013-06

CT-60

CP-130241

0016

1

IANA registration and corrections to USSI

11.2.0

11.3.0

2013-06

CT-60

CP-130241

0017

1

IANA security considerations correction

11.2.0

11.3.0

2013-09

CT-61

CP-130496

0018

2

Ambiguous reference to encoding of the language value in XML body

11.3.0

11.4.0

2014-06

CT-64

CP-140313

0021

1

Updating of reference to 3GPP2 USSD specification

11.4.0

11.5.0

2014-06

CT-64

CP-140334

0020

1

Prohibition of USSI usage and identification of missing network support

11.5.0

12.0.0

2014-09

CT-65

CP-140669

0022

1

Introduction of network-initiated USSI, revised scope and introduction

12.0.0

12.1.0

2014-09

CT-65

CP-140669

0023

2

Introduction of network-initiated USSI, procedures

12.0.0

12.1.0

2014-09

CT-65

CP-140669

0024

1

Introduction of network-initiated USSI, example flows

12.0.0

12.1.0

2014-09

CT-65

CP-140665

0025

Editorial amendments

12.0.0

12.1.0

2014-12

CT-66

CP-140856

0026

Corrections of network-initiated USSI request procedures and coding

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0027

1

Add USSN to the signalling requirements

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0028

1

Correct the introduction section for network-initiated USSD simulation services in IMS

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0029

2

UE support the network initiated USSD procedures

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0030

3

The USSI AS send the initiated USSD

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0031

2

Revision of signalling flows for network initiated USSD

12.1.0

12.2.0

2014-12

CT-66

CP-140837

0032

1

Correct labelling of annexes

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0033

1

Scope for USSD over IMS

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0034

1

Removal of editor’s note relating to multiple use of sessions

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0035

Removal of editor’s note relating to domain selection procedures

12.1.0

12.2.0

2014-12

CT-66

CP-140856

0036

Removal of editor’s note relating to network initiated USSD notification

12.1.0

12.2.0

2015-09

CT-69

CP-150583

0038

2

Addressing IANA Expert Review comments on "g.3gpp.ussd" INFO package

12.2.0

12.3.0

2015-12

CT-70

CP-150687

0039

2

Addressing IANA Expert Review comments on registration of media feature tag "g.3gpp.nw-init-ussi”

12.3.0

12.4.0

2015-12

CT-70

Upgrade to Rel-13

12.4.0

13.0.0

2016-06

CT-72

CP-160299

0042

1

IANA registration for g.3gpp.ussd info package

13.0.0

13.1.0

2016-06

CT-72

CP-160299

0045

1

IANA registration for application/vnd.3gpp.ussd+xml MIME type

13.0.0

13.1.0

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2016-09

CT#73

CP-160485

0046

2

A

Correcting the ussd.xsd file

13.2.0

2016-09

CT#73

CP-160485

0051

A

USSI phone-context parameter correction

13.2.0

2017-03

CT#75

CP-170109

0054

2

A

Removing editors note on registration of media feature tag “g.3gpp.nw-init-ussi”

13.3.0

2017-03

CT#75

CP-170130

0052

3

B

3GPP PS Data Off and USSI

14.0.0

2018-06

CT#80

CP-181060

0055

1

B

PS Data Off for 5GS

15.0.0

2018-06

CT#80

CP-181074

0056

1

B

3GPP PS Data Off2 and USSI

15.0.0

2018-12

CT#82

CP-183044

0057

1

F

Correct PS Data Off requirements for other accesses

15.1.0

2020-07

SA#88e

Update to Rel-16 version (MCC)

16.0.0

2022-03

CT#95ee

CP-220238

0058

1

B

3GPP PS data off and UE in SNPN

17.0.0