ETSI TS 129 388 V15.1.0 (2019-10)

LTE; V2X Control Function to Home Subscriber Server (HSS) aspects (V4); Stage 3 (3GPP TS 29.388 version 15.1.0 Release 15)

RTS/TSGC-0429388vf10

General Information

• Status: Published
• Publication Date: 02-Oct-2019
• Technical Committee: 3GPP CT 4 - MAP/CAMEL/GTP/BCH/SS/TrFO/IMS/GUP/WLAN (formely CN4)
• Current Stage: 12 - Completion
• Completion Date: 03-Oct-2019

Standards Content (Sample)

ETSI TS 129 388 V15.1.0 (2019-10)






TECHNICAL SPECIFICATION
LTE;
V2X Control Function to Home Subscriber Server (HSS)
aspects (V4);
Stage 3
(3GPP TS 29.388 version 15.1.0 Release 15)

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3GPP TS 29.388 version 15.1.0 Release 15 1 ETSI TS 129 388 V15.1.0 (2019-10)



Reference
RTS/TSGC-0429388vf10
Keywords
LTE
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3GPP TS 29.388 version 15.1.0 Release 15 2 ETSI TS 129 388 V15.1.0 (2019-10)
Intellectual Property Rights
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
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"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 29.388 version 15.1.0 Release 15 3 ETSI TS 129 388 V15.1.0 (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
3.2 Abbreviations . 7
4 General Description . 7
4.1 Introduction . 7
5 Procedure Description . 7
5.1 Introduction . 7
5.2 V2X Subscriber Information Retrieval . 7
5.2.1 General . 7
5.2.2 Detailed Behaviour of the V2X Control Function . 8
5.2.3 Detailed Behaviour of the HSS . 8
5.3 Update V2X Subscriber Data . 9
5.3.1 General . 9
5.3.2 Detailed behaviour of the V2X Control Function . 10
5.3.3 Detailed behaviour of the HSS . 11
5.4 Notification Procedure . 11
5.4.1 General . 11
5.4.2 Detailed Behaviour of the V2X Control Function . 12
5.4.3 Detailed Behaviour of the HSS . 12
5.5 Reset . 13
5.5.1 General . 13
5.5.2 Detailed behaviour of the V2X Control Function . 13
5.5.3 Detailed behaviour of the HSS . 14
6 Protocol Specification and Implementations . 14
6.1 Introduction . 14
6.1.1 Use of Diameter base protocol . 14
6.1.2 Securing Diameter Messages . 14
6.1.3 Accounting Functionality . 14
6.1.4 Use of Sessions . 14
6.1.5 Transport Protocol . 14
6.1.6 Routing Considerations . 15
6.1.7 Advertising Application Support . 15
6.1.8 Diameter Application Identifier . 15
6.1.9 Use of the Supported-Features AVP . 15
6.2 Commands . 16
6.2.1 Introduction. 16
6.2.2 Command-Code Values . 16
6.2.3 ProSe-Subscriber-Information-Request (PIR) Command . 16
6.2.4 ProSe-Subscriber-Information-Answer (PIA) Command . 17
6.2.5 Update-ProSe-Subscriber-Data-Request (UPR) Command . 17
6.2.6 Update-ProSe-Subscriber-Data-Answer (UPA) Command . 18
6.2.7 ProSe-Notify-Request (PNR) Command . 18
6.2.8 ProSe-Notify-Answer (PNA) Command . 18
6.2.9 Reset-Request (RSR) Command . 19
6.2.10 Reset-Answer (RSA) Command . 19
6.3 AVPs . 20
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3GPP TS 29.388 version 15.1.0 Release 15 4 ETSI TS 129 388 V15.1.0 (2019-10)
6.3.1 General . 20
6.3.2 V2X-Subscription-Data . 21
6.3.3 V2X-PC5-Allowed-PLMN . 21
6.3.4 V2X-Update-Flags . 21
6.3.5 V2X-Notify-Flags . 21
6.3.6 OC-Supported-Features . 22
6.3.7 OC-OLR . 22
6.3.8 DRMP . 22
6.3.9 Load . 22
6.4 Result-Code AVP and Experimental-Result AVP Values . 22
6.4.1 General . 22
6.4.2 Success . 22
6.4.3 Permanent Failures . 22
6.4.3.1 General . 22
6.4.3.2 DIAMETER_ERROR_USER_UNKNOWN (5001) . 23
6.4.3.3 DIAMETER_ERROR_UNKNOWN_V2X_SUBSCRIPTION (5690) . 23
6.4.3.4 DIAMETER_ERROR_V2X_NOT_ALLOWED (5691) . 23
Annex A (normative): Diameter overload control mechanism . 24
A.1 General . 24
A.2 HSS behaviour . 24
A.3 V2X Control Function behaviour . 24
Annex B (Informative): Diameter overload node behaviour . 25
B.1 Message prioritization . 25
Annex C (normative): Diameter message priority mechanism . 26
C.1 General . 26
C.2 V4 interface . 26
C.2.1 General . 26
C.2.2 HSS and V2X Control Function behaviour . 26
D.1 General . 26
D.2 HSS behaviour . 26
D.3 V2X Control Function behaviour . 27
Annex E (informative): Change history . 28
History . 29

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3GPP TS 29.388 version 15.1.0 Release 15 5 ETSI TS 129 388 V15.1.0 (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.
ETSI

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3GPP TS 29.388 version 15.1.0 Release 15 6 ETSI TS 129 388 V15.1.0 (2019-10)
1 Scope
The present document describes the Diameter-based V4 interface between the V2X Control Function and the Home
Subscriber Server (HSS) defined for V2X services.
This specification defines the Diameter application for V4 reference point between the V2X Control Function and the
HSS. The interactions between the V2X Control Function and the HSS 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] IETF RFC 7944: "Diameter Routing Message Priority".
[14] 3GPP TS 23.007: "Restoration procedures".
[15] 3GPP TS 29.344: "Proximity-services (ProSe) Function to Home Subscriber Server (HSS)
aspects".
[16] IETF RFC 8583: "Diameter Load Information Conveyance".
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3GPP TS 29.388 version 15.1.0 Release 15 7 ETSI TS 129 388 V15.1.0 (2019-10)
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.

3.2 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 V4 reference point between the V2X Control Function and the HSS is defined in the 3GPP TS 23.285 [2].
This document describes the V4 interface related procedures, message parameters and protocol specifications.
The V4 interface allows the V2X Control Function to retrieve V2X related subscription data in order to authorise access
from the UE for V2X services.
5 Procedure Description
5.1 Introduction
This clause describes the Diameter-based V4 interface related procedures and information elements exchanged between
the V2X Control Function and the HSS.
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 Subscriber Information Retrieval
5.2.1 General
This procedure shall be used between the V2X Control Function and the HSS for authorization of the UE for V2X
services. The procedure shall be invoked by the V2X Control Function and is used:
- to request V2X related subscription data.
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3GPP TS 29.388 version 15.1.0 Release 15 8 ETSI TS 129 388 V15.1.0 (2019-10)
This procedure is mapped to the commands ProSe-Subscriber-Information-Request/Answer (PIR/PIA) in the Diameter
application specified in clause 6. Table 5.2.1-1 and table 5.2.1-2 detail the involved information elements.
Table 5.2.1-1: V2X Subscriber Information Retrieval Request
Information Element Mapping to Diameter Cat. Description
Name AVP
IMSI User-Name (See M This information element shall contain the user IMSI,
IETF RFC 6733 [3]) formatted according to 3GPP TS 23.003 [8],
clause 2.2.
Supported Features Supported-Features O If present, this information element shall contain the
(See list of features supported by the origin host.
3GPP TS 29.229 [6])

Table 5.2.1-2: V2X Subscriber Information Retrieval Answer
Information Element Mapping to Cat. Description
Name Diameter AVP
Result Result-Code / M This IE shall contain the result of the operation.
(See 6) Experimental- The Result-Code AVP shall be used to indicate success / errors as
Result defined in the Diameter base protocol.
The Experimental-Result AVP shall be used for V4 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
- Unknown V2X Subscription
- V2X Not Allowed
V2X Subscription Data V2X-Subscription- C This information element shall contain the V2X Subscription Data
(See 6.3.2) Data that gives the user permission to use V2X.
MSISDN MSISDN C This information element shall contain the user MSISDN,
(See 3GPP TS 29.329 formatted according to 3GPP TS 29.329 [11]. It shall be present if
[11]) available.
Visited PLMN Id Visited-PLMN-Id C This IE shall contain the MCC and the MNC of the PLMN where
(See the UE is registered, see 3GPP TS 23.003 [8].
3GPP TS 29.272 [10]) It shall be present if the UE is roaming in a PLMN different from
the Home PLMN.
Supported Features Supported- O If present, this information element shall contain the list of features
(See Features supported by the origin host.
3GPP TS 29.229 [6])
Reset-IDs Reset-ID O The Reset-ID uniquely identifies a fallible resource in the HSS's
(See realm on which the user (IMSI) depends. In the event of a restart
3GPP TS 29.272 [10]) of the fallible resource a Reset message containing the Reset-ID
will exactly identify the impacted subscribers.

5.2.2 Detailed Behaviour of the V2X Control Function
The V2X Control Function shall make use of this procedure to request V2X related subscription data.
If the V2X Control Function retrieved the V2X related subscription data, the V2X Control Function shall perform the
authorisation for V2X as described in the 3GPP TS 23.285 [2].
5.2.3 Detailed Behaviour of the HSS
When receiving a V2X Subscriber Information Retrieval Request the HSS shall check if the IMSI for whom data is
requested exists in the HSS. If not, an Experimental-Result of DIAMETER_ERROR_USER_UNKNOWN shall be
returned.
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3GPP TS 29.388 version 15.1.0 Release 15 9 ETSI TS 129 388 V15.1.0 (2019-10)
If the IMSI exists but there is not any V2X subscription data for the IMSI, the HSS shall return an Experimental-Result
of DIAMETER_ERROR_UNKNOWN_V2X_SUBSCRIPTION.
If the UE is not allowed to use V2X in the visited PLMN, the HSS shall return an Experimental-Result of
DIAMETER_ERROR_V2X_NOT_ALLOWED. Otherwise, the HSS shall return a Result-Code of
DIAMETER_SUCCESS and shall store V2X Control Function identity (the V2X Control Function identity is received
within the Origin-Host AVP) and download the V2X subscription data to the V2X Control Function. The HSS shall
provide the Visited PLMN ID of where the UE is registered if the UE is roaming in a PLMN different from the Home
PLMN.
5.3 Update V2X Subscriber Data
5.3.1 General
The Update V2X Subscriber Data procedure shall be used between the V2X Control Function and the HSS to update
the subscriber related data downloaded by means of the V2X Subscriber Information Retrieval operation (see
clause 5.2) and stored in the V2X Control Function.
It shall be used to update subscriber related data in the V2X Control Function due to administrative changes of the user
data in the HSS, i.e. if the user was given a subscription and the subscription has changed. It shall be used at least to
perform the following:
- update of all of V2X subscription data of the subscriber,
- update of a subset of the V2X subscription data of the subscriber,
- deletion of the V2X subscription data of the subscriber.
The procedure will also be triggered when the VPLMN has changed.
This procedure is mapped to the commands Update-ProSe-Subscriber-Data-Request/Answer (UPR/UPA) in the
Diameter application specified in clause 6.
Table 5.3.1-1 specifies the involved information elements for the request.
Table 5.3.1-2 specifies the involved information elements for the answer.
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3GPP TS 29.388 version 15.1.0 Release 15 10 ETSI TS 129 388 V15.1.0 (2019-10)
Table 5.3.1-1: Update V2X Subscriber Data Request
Information Mapping to Cat. Description
element name Diameter AVP
IMSI User-Name M This information element shall contain the user IMSI, formatted according
(See to 3GPP TS 23.003 [8], clause 2.2.
IETF RFC 673
3 [3])
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 Subscription Data that gives
Subscription Subscription- the user permission to use V2X service.
Data (See Data
6.3.2)
Visited PLMN Visited-PLMN- C This IE shall contain the MCC and the MNC of the PLMN where the UE is
Id Id registered, see 3GPP TS 23.003 [8].
(See It shall be present if the UE is roaming in a PLMN different from the Home
3GPP TS 29.2 PLMN.
72 [10])
V2X Update V2X
...