ETSI TS 129 389 V14.2.0 (2019-10)

TECHNICAL SPECIFICATION
LTE;
Inter-V2X Control Function Signalling aspects (V6);
Stage 3
(3GPP TS 29.389 version 14.2.0 Release 14)

3GPP TS 29.389 version 14.2.0 Release 14 1 ETSI TS 129 389 V14.2.0 (2019-10)

Reference
RTS/TSGC-0429389ve20
Keywords
LTE
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3GPP TS 29.389 version 14.2.0 Release 14 2 ETSI TS 129 389 V14.2.0 (2019-10)
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Legal Notice
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3GPP TS 29.389 version 14.2.0 Release 14 3 ETSI TS 129 389 V14.2.0 (2019-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.3 Abbreviations . 7
4 General Description . 7
4.1 Introduction . 7
5 Procedure Description . 7
5.1 Introduction . 7
5.2 V2X Service Authorization . 7
5.2.1 General . 7
5.2.2 Detailed behaviour of the V2X Control Function in the HPLMN . 8
5.2.3 Detailed behaviour of the V2X Control Function in the VPLMN . 9
6 Protocol Specification and Implementations . 9
6.1 Introduction . 9
6.1.1 Use of Diameter base protocol . 9
6.1.2 Securing Diameter Messages . 9
6.1.3 Accounting functionality . 9
6.1.4 Use of sessions . 9
6.1.5 Transport protocol . 10
6.1.6 Routing considerations . 10
6.1.7 Advertising Application Support . 10
6.1.8 Diameter Application Identifier . 10
6.1.9 Use of the Supported-Features AVP . 10
6.2 Commands . 11
6.2.1 Introduction. 11
6.2.2 Command-Code values . 11
6.2.3 ProSe-Authorization-Request (PAR) Command . 11
6.2.4 ProSe-Authorization-Answer (PAA) Command. 12
6.3 Information Elements . 12
6.3.1 General . 12
6.3.2 V2X-Authorization-Data . 13
6.3.3 V2X-Permission-in-VPLMN . 14
6.3.4 V2X-Application-Server . 14
6.3.5 Application-Server . 14
6.3.6 Geographical-Information . 14
6.3.7 OC-Supported-Features . 14
6.3.8 OC-OLR . 14
6.3.9 DRMP . 15
6.3.10 Load . 15
6.4 Result-Code AVP and Experimental-Result AVP Values . 15
6.4.1 General . 15
6.4.2 Success . 15
6.4.3 Permanent Failures . 15
6.4.3.1 General . 15
6.4.3.2 DIAMETER_ERROR_USER_UNKNOWN (5001) . 15
6.4.3.3 DIAMETER_ERROR_UNKNOWN_V2X_SUBSCRIPTION (5690) . 15
6.4.3.4 DIAMETER_ERROR_V2X_NOT_ALLOWED (5691) . 15
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Annex A (normative): Diameter overload control mechanism . 16
A.1 General . 16
A.2 Responding V2X Control Function behaviour . 16
A.3 Requesting V2X Control Function behaviour . 16
Annex B (Informative): Diameter overload node behaviour . 17
B.1 Message prioritization . 17
Annex C (normative): Diameter message priority mechanism . 18
C.1 General . 18
C.2 V6 interfaces . 18
C.2.1 General . 18
C.2.2 V2X Control Function behaviour . 18
D.1 General . 18
D.2 Responding V2X Control Function behaviour . 18
D.3 Requesting V2X Control Function behaviour . 19
Annex E (informative): Change history . 20
History . 21

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3GPP TS 29.389 version 14.2.0 Release 14 5 ETSI TS 129 389 V14.2.0 (2019-10)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
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1 Scope
The present document describes the Diameter-based interfaces between the V2X Control Function in the HPLMN and
the V2X Control Function in the VPLMN (V6 interface).
This specification defines the Diameter application for V6 reference points between the V2X Control Functions. The
interactions between the V2X Control Functions are specified.
The stage 2 description for V2X service features in EPS is specified in 3GPP TS 23.285 [2].
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 23.285: "Architecture enhancements for V2X services; Stage 2".
[3] IETF RFC 6733: "Diameter Base Protocol".
[4] 3GPP TS 33.210: "3G Security; Network Domain Security; IP Network Layer Security".
[5] IETF RFC 4960: "Stream Control Transmission Protocol".
[6] 3GPP TS 29.229: "Cx and Dx interfaces based on the Diameter protocol".
[7] IETF RFC 5234: "Augmented BNF for Syntax Specifications: ABNF".
[8] 3GPP TS 23.003: "Numbering, addressing and identification".
[9] 3GPP TS 29.228: "IP multimedia (IM) Subsystem Cx and Dx Interfaces; Signalling flows and
Message Elements".
[10] 3GPP TS 29.272: "Evolved Packet System; MME and SGSN Related Interfaces Based on
Diameter Protocol".
[11] 3GPP TS 29.329: "Sh Interface based on the Diameter protocol".
[12] IETF RFC 7683: "Diameter Overload Indication Conveyance".
[13] 3GPP TS 29.336: "Home Subscriber Server (HSS) diameter interfaces for interworking with
packet data networks and applications".
[14] 3GPP TS 32.299: "Telecommunication management; Charging management; Diameter charging
applications".
[15] IETF RFC 7944: "Diameter Routing Message Priority".
[16] 3GPP TS 29.388: "V2X Control Function to V2X Control Function to Home Subscriber Server
(HSS) aspects (V4)".
[17] 3GPP TS 29.345: "Inter-Proximity-services (ProSe) Function signalling aspects".
[18] IETF RFC 8583: "Diameter Load Information Conveyance".
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3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following
apply. A term defined in the present document takes precedence over the definition of the same term, if any, in
3GPP TR 21.905 [1].
example: text used to clarify abstract rules by applying them literally.

3.3 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
3GPP TR 21.905 [1].
ProSe Proximity-based Services
V2X Vehicle-to-Everything
4 General Description
4.1 Introduction
The V6 reference point is defined between a V2X Control Function in the HPLMN and a V2X Control Function in the
VPLMN.
The definition of the V6 reference points and related functionalities are given in 3GPP TS 23.285 [2].
As defined in 3GPP TS 23.285 [2], the V6 reference point is used for:
- HPLMN control of service authorization for V2X.
5 Procedure Description
5.1 Introduction
This clause describes the Diameter-based V6 interface related procedures and Information elements exchanged between
functional entities.
In the tables that describe the Information Elements transported by each Diameter command, each Information Element
is marked as (M) Mandatory, (C) Conditional or (O) Optional in the "Cat." column. For the correct handling of the
Information Element according to the category type, see the description detailed in clause 6 of the 3GPP TS 29.228 [9].
5.2 V2X Service Authorization
5.2.1 General
The V2X Service Authorization Procedure shall be used between the V2X Control Function in the HPLMN and the
V2X Control Function in the VPLMN to obtain service authorization information for V2X services. The procedure shall
be invoked by the V2X Control Function in the HPLMN of the UE and is used:
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- to request service authorization information for V2X related to the UE from the V2X Control Function in the
VPLMN;
- to provide the V2X Control Function in the VPLMN with the UE identity (IMSI or MSISDN) in order to allow
to perform charging:
This procedure is mapped to the commands ProSe-Authorization-Request/Answer (PAR/PAA) in the Diameter
application specified in clause 6.
Table 5.2.1-1 specifies the involved information elements for the request.
Table 5.2.1-2 specifies the involved information elements for the answer.
Table 5.2.1-1: V2X Service Authorization Request
Information Mapping to Cat. Description
element name Diameter AVP
UE Identity User-Identifier M This information element shall contain either the user IMSI, formatted
(See according to 3GPP TS 23.003 [8], clause 2.2, or the user MSISDN, formatted
3GPP TS 29.3 according to 3GPP TS 29.329 [11].
36 [13])
PLMN Id Visited-PLMN- M This IE shall contain the PLMN-Id (3GPP TS 23.003 [8]) of the network in
(See Id which the V2X Control Function is located.
3GPP TS 29.2
72 [10])
Supported Supported- O If present, this information element shall contain the list of features supported
Features Features by the origin host.
(See
3GPP TS 29.2
29 [6])
Table 5.2.1-2: V2X Service Authorization Answer
Information Mapping to Cat. Description
element name Diameter AVP
Result Result-Code / M This IE shall contain the result of the operation.
(See 6.4) Experimental- The Result-Code AVP shall be used to indicate success / errors as defined
Result in the Diameter Base Protocol.
The Experimental-Result AVP shall be used for V6 errors. This is a
grouped AVP which shall contain the 3GPP Vendor ID in the Vendor-Id
AVP, and the error code in the Experimental-Result-Code AVP.
The following errors are applicable:
- User Unknown
- Unauthorized Service
- Unauthorized Service in this PLMN

Supported Supported- O If present, this information element shall contain the list of features
Features Features supported by the origin host.
(See
3GPP TS 29.2
29 [6])
V2X V2X- C This Information Element shall contain the V2X authorization information of
Authorization Authorization- the user. It shall be present if success is reported.
Data Data
(See 6.3.2)
5.2.2 Detailed behaviour of the V2X Control Function in the HPLMN
The V2X Control Function in the HPLMN shall make use of this procedure to request service authorization information
for V2X related to the UE from the V2X Control Function in the VPLMN. The V2X Control Function shall include in
the request the UE identity (IMSI or MSISDN) and the PLMN-Id identifying the PLMN of the requesting V2X Control
Function.
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When receiving a V2X Service Authorization response from the V2X Control Function in the VPLMN, the V2X
Control Function in the HPLMN shall check the result code. If it indicates SUCCESS, the V2X Control Function shall
merge with its own policy.
5.2.3 Detailed behaviour of the V2X Control Function in the VPLMN
When receiving a V2X Service Authorization request, the V2X Control Function in the VPLMN shall, in the following
order:
1. Check whether the UE Identity (IMSI or MSISDN) exists. If not, a Result Code of
DIAMETER_ERROR_USER_UNKNOWN shall be returned.
2. Check whether V2X is authorized for this UE Identity. If not, a Result Code of
DIAMETER_ERROR_UNAUTHORIZED_SERVICE shall be returned.
If there is an error in any of t
...