ETSI TS 123 285 V14.9.0 (2020-01)

Universal Mobile Telecommunications System (UMTS); LTE; Architecture enhancements for V2X services (3GPP TS 23.285 version 14.9.0 Release 14)

RTS/TSGS-0223285ve90

General Information

• Status: Published
• Publication Date: 12-Jan-2020
• Technical Committee: 3GPP SA 2 - Architecture
• Current Stage: 12 - Completion
• Completion Date: 13-Jan-2020

Standards Content (Sample)

ETSI TS 123 285 V14.9.0 (2020-01)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Architecture enhancements for V2X services
(3GPP TS 23.285 version 14.9.0 Release 14)

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3GPP TS 23.285 version 14.9.0 Release 14 1 ETSI TS 123 285 V14.9.0 (2020-01)



Reference
RTS/TSGS-0223285ve90
Keywords
LTE,UMTS
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3GPP TS 23.285 version 14.9.0 Release 14 2 ETSI TS 123 285 V14.9.0 (2020-01)
Intellectual Property Rights
Essential patents
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pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
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Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
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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 23.285 version 14.9.0 Release 14 3 ETSI TS 123 285 V14.9.0 (2020-01)
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 . 8
4 Architecture model and concepts . 8
4.1 General concept . 8
4.2 Architectural reference model . 8
4.2.1 PC5 and LTE-Uu based V2X architecture reference model . 8
4.2.1.1 Non-roaming architecture for PC5 and LTE-Uu based V2X communication . 8
4.2.1.2 Roaming architecture for PC5 and LTE-Uu based V2X communication . 9
4.2.1.3 Inter-PLMN architecture for PC5 and LTE-Uu based V2X communication . 10
4.2.2 MBMS for LTE-Uu based V2X architecture reference model . 11
4.2.3 Reference points . 12
4.3 Functional entities . 13
4.3.1 V2X Control Function . 13
4.3.1.1 General . 13
4.3.1.2 V2X Control Function discovery . 13
4.3.2 UE . 13
4.3.3 V2X Application Server . 14
4.3.4 MME . 14
4.3.5 BM-SC . 14
4.3.6 MBMS-GW . 14
4.4 High level function . 15
4.4.1 Authorization and Provisioning for V2X communications . 15
4.4.1.1 Authorization and provisioning for V2X communications over PC5 reference point . 15
4.4.1.1.1 General . 15
4.4.1.1.2 Policy/Parameter provisioning . 15
4.4.1.1.3 Principles for applying parameters for V2X communications over PC5 reference point . 16
4.4.1.2 Authorization and provisioning for V2X communications over LTE-Uu reference point . 17
4.4.1.2.1 General . 17
4.4.1.2.2 Policy/Parameter provisioning . 17
4.4.2 V2X message transmission/reception over PC5 reference point . 18
4.4.3 V2X message transmission/reception over LTE-Uu reference point . 18
4.4.3.1 General . 18
4.4.3.2 V2X message transmission/reception via unicast . 18
4.4.3.3 V2X message reception via MBMS . 19
4.4.4 V2X Application Server discovery . 19
4.4.4.1 General . 19
4.4.4.2 Multiple V2X Application Server and Localized V2X Application Server discovery and routing . 20
4.4.5 QoS handling for V2X communication . 20
4.4.5.1 QoS handling for V2X communication over PC5 reference point . 20
4.4.5.2 QoS handling for V2X communication over LTE-Uu reference point . 21
4.4.6 Subscription to V2X services. 21
4.4.7 MBMS bearer announcement for V2X use . 21
4.4.7.1 General . 21
4.4.7.2 User Service Description for V2X Communication (V2X USD) . 21
4.4.7.3 User Service Description for V2X Application Server Discovery (V2X Server USD) . 22
4.4.8 Support for V2X communication for UEs in limited service state . 22
4.4.9 Charging support for V2X communication . 23
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3GPP TS 23.285 version 14.9.0 Release 14 4 ETSI TS 123 285 V14.9.0 (2020-01)
4.4.9.1 Charging support for V2X communication over PC5 reference point . 23
4.4.9.2 Charging support for V2X communication over LTE-Uu reference point . 23
4.4.10 Security and privacy protection support for V2X communication . 23
4.5 Identifiers . 23
4.5.1 Identifiers for V2X communication over PC5 reference point . 23
5 Functional description and information flows . 24
5.1 Control and user plane stacks . 24
5.1.1 User plane for PC5 reference point supporting V2X services . 24
5.2 Service authorization and update for V2X communications . 24
5.2.1 Service authorization procedures . 24
5.2.2 Service authorization update procedures . 24
5.3 Procedure for V2X communication over PC5 reference point . 24
5.4 Procedure for V2X communication over LTE-Uu reference point . 25
5.4.1 V2X Application Server discovery using MBMS . 25
5.4.1.1 General . 25
5.4.1.2 Procedures for receiving V2X Application Server information via MBMS . 25
5.4.2 Procedure for V2X communication with MBMS . 26
5.4.2.1 MBMS service area mapping . 26
5.4.2.1.1 General . 26
5.4.2.1.2 Functional Description . 26
5.4.2.2 Local MBMS based MBMS data delivery . 26
5.5 V2X impacts to EPC procedures . 28
5.5.1 E-UTRAN attach procedure for UE. 28
5.5.2 Service Request procedures for UE . 28
5.5.3 S1 Handover procedures for UE . 28
5.5.4 X2 Handover procedures for UE . 29
5.5.5 Tracking Area Update procedure for UE . 29
5.5.6 Insert Subscriber Data procedure for UE . 29
5.5.7 Delete Subscriber Data procedure for UE . 29
Annex A (informative): Road Side Unit (RSU) implementation options . 30
Annex B (informative): Localized MBMS deployment options . 31
B.1 General Description . 31
B.2 Option of localized MBMS CN functions . 31
B.3 Option of localized user plane of MBMS CN functions . 32
Annex C (informative): Example hybrid operation modes for V2X communication over PC5
and LTE-Uu . 33
C.1 General . 33
C.2 PC5 based V2X communication with MBMS reception . 33
C.3 Simultaneous LTE-Uu based and PC5 based V2X communication without MBMS . 33
Annex D (informative): V2X Message Distribution Server deployment option . 35
D.1 General Description . 35
Annex E (informative): Change history . 36
History . 37

ETSI

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3GPP TS 23.285 version 14.9.0 Release 14 5 ETSI TS 123 285 V14.9.0 (2020-01)
Foreword
rd
This Technical Report 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 23.285 version 14.9.0 Release 14 6 ETSI TS 123 285 V14.9.0 (2020-01)
1 Scope
The present document specifies architecture enhancements to facilitate vehicular communications for Vehicle-to-
Everything (V2X) services, which includes Vehicle-to-Vehicle (V2V), Vehicle-to-Pedestrian (V2P), Vehicle-to-
Infrastructure (V2I), and Vehicle-to-Network (V2N), according to the use cases and service requirements defined in
TS 22.185 [2].
The following vehicular communications for V2X services are specified:
- V2X communication over PC5 reference point.
- V2X communication over LTE-Uu reference point.
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 22.185: "Service requirements for V2X services".
[3] ISO 17419:2018: "Intelligent transport systems - Cooperative systems - Globally unique
identification".
[4] IEEE Std 1609.12-2016: "IEEE Standard for Wireless Access in Vehicular Environments
(WAVE) - Identifier Allocations".
[5] 3GPP TS 23.303: "Proximity-based Services (ProSe); Stage 2".
[6] 3GPP TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal
Terrestrial Radio Access Network (E-UTRAN) access".
[7] 3GPP TS 23.468: "Group Communication System Enablers for LTE (GCSE_LTE)".
[8] 3GPP TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional
description".
[9] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource
Control (RRC); Protocol specification".
[10] 3GPP TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal
Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".
[11] 3GPP TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".
[12] 3GPP TS 23.203: "Policy and charging control architecture".
[13] IEEE Std 1609.3-2010: "IEEE Standard for Wireless Access in Vehicular Environments (WAVE)
- Networking Services".
[14] ISO 29281-1:2013: "Intelligent Transport Systems - Communications access for land mobiles
(CALM) - Non-IP networking - Part 1: Fast networking & transport layer protocol (FNTP)".
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3GPP TS 23.285 version 14.9.0 Release 14 7 ETSI TS 123 285 V14.9.0 (2020-01)
[15] 3GPP TS 29.272: "Evolved Packet System (EPS); Mobility Management Entity (MME) and
Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol".
[16] ETSI TS 102 637-2 V1.2.1: "Intelligent Transport Systems (ITS); Vehicular Communications;
Basic Set of Applications; Part 2: Specification of Cooperative Awareness Basic Service".
[17] ETSI TS 102 637-3 V1.1.1: "Intelligent Transport Systems (ITS); Vehicular Communications;
Basic Set of Applications; Part 3: Specifications of Decentralized Environmental Notification
Basic Service".
[18] 3GPP TS 32.277: "Proximity-based Services (ProSe) charging".
[19] Void.
[20] 3GPP TS 32.251: "Telecommunication management; Charging management; Packet Switched
(PS) domain charging".
[21] 3GPP TS 32.273: "Telecommunication management; Charging management; Multimedia
Broadcast and Multicast Service (MBMS) charging".
[22] 3GPP TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE)
procedures in idle mode".
[23] 3GPP TS 23.122: "Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle
mode".
[24] Void.
[25] 3GPP TS 33.185: "Security aspect for LTE support of V2X services".
[26] 3GPP TS 36.321: "Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access
Control (MAC) protocol specification".
[27] 3GPP TS 24.386: "User Equipment (UE) to V2X control function; protocol aspects; Stage 3".
[28] 3GPP TS 23.167: "IP Multimedia Subsystem (IMS) emergency sessions".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 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 TR 21.905 [1].
For the purposes of the present document, the following terms and definitions given in ISO 17419 [3] apply:
Intelligent Transport Systems
ITS Application Identifier
For the purposes of the present document, the following term and definition given in IEEE Std 1609.12-2016 [4] apply:
Provider Service Identifier
For the purposes of the present document, the following term and definition given in TS 22.185 [2] apply:
Road Side Unit
For the purposes of the present document, the following term and definition given in TS 23.303 [5] apply:
Geographical Area
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3GPP TS 23.285 version 14.9.0 Release 14 8 ETSI TS 123 285 V14.9.0 (2020-01)
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in 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 TR 21.905 [1].
C-TEID Common-Tunnel Endpoint IDentifier
ITS Intelligent Transport Systems
ITS-AID ITS Application Identifier
PSID Provider Service Identifier
RSU Road Side Unit
SIPTO@LN SIPTO at the Local Network
USD User Service Description
V2X Vehicle-to-Everything

4 Architecture model and concepts
4.1 General concept
There are two modes of operation for V2X communication, namely over the PC5 and over LTE-Uu. LTE-Uu can be
unicast and/or MBMS. These two operation modes may be used by a UE independently for transmission and reception,
e.g. a UE can use MBMS for reception without using LTE-Uu for transmission. A UE may also receive V2X messages
via LTE-Uu unicast downlink.
For both operation modes, the following principles apply:
- V2X Application Servers e.g. in different domains can communicate with each other for the exchange of V2X
messages. The interface between V2X Application Servers and the methods of the exchange of messages
between V2X Application Servers is out of scope of 3GPP.
- ProSe discovery feature (TS 23.303 [5] clause 5.3 ProSe Direct Discovery) is not required for V2X Services.
NOTE: ProSe discovery feature can be used by a V2X supporting UE, but that is up to UE implementation.
- Subject to regional regulations, lawful interception requirements apply to V2X Services.
- An RSU is not an architectural entity, but an implementation option. This is achieved by collocating a V2X
application logic/server with some entities of the 3GPP system, as shown in examples in Annex A.
4.2 Architectural reference model
4.2.1 PC5 and LTE-Uu based V2X architecture reference model
4.2.1.1 Non-roaming architecture for PC5 and LTE-Uu based V2X communication
Figure 4.2.1.1-1 shows the high level view of the non-roaming architecture for PC5 and LTE-Uu based V2X
communication.
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3GPP TS 23.285 version 14.9.0 Release 14 9 ETSI TS 123 285 V14.9.0 (2020-01)

Figure 4.2.1.1-1: Non-roaming reference architecture for PC5 and LTE-Uu based V2X communication
4.2.1.2 Roaming architecture for PC5 and LTE-Uu based V2X communication
Figure 4.2.1.2-1 shows the high level view of the roaming architecture for PC5 and LTE-Uu based V2X
communication. In this figure, UE A uses a subscription of PLMN A and UE B uses a subscription of PLMN B; UE A
is roaming in PLMN B while UE B is not roaming.
A V2X Application Server may connect to multiple PLMNs, e.g. one V2X Application Server can connect with the
V2X Control Function in PLMN A and the V2X Control Function in PLMN B in the figure.
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3GPP TS 23.285 version 14.9.0 Release 14 10 ETSI TS 123 285 V14.9.0 (2020-01)
V2X V2X
Application Application
Server Server
V3 V1
SGi
V2 V2
HSS
V4
S/P-GW
S6a
V6
V2X Control
V2X Control
MME
Function Function
(PLMN A) (PLMN B)
V2X
V4 S1
Application
UE B
S6a E-UTRAN
HSS
LTE-Uu
LTE-Uu
PC5
V3
UE A
V5
V2X
Application
PLMN A PLMN B

Figure 4.2.1.2-1: Roaming reference architecture for PC5 and LTE-Uu based V2X communication
4.2.1.3 Inter-PLMN architecture for PC5 and LTE-Uu based V2X communication
Figure 4.2.1.3-1 shows the high level view of the inter-PLMN architecture for PC5 and LTE-Uu based V2X
communication. In this figure, UE A uses a subscription of PLMN A and UE B uses a subscription of PLMN B; UE A
is roaming in PLMN C while UE B is not roaming.
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3GPP TS 23.285 version 14.9.0 Release 14 11 ETSI TS 123 285 V14.9.0 (2020-01)

Figure 4.2.1.3-1: Inter-PLMN reference architecture for PC5 and LTE-Uu based V2X communication
4.2.2 MBMS for LTE-Uu based V2X architecture reference model
Figure 4.2.2-1a and figure 4.2.2-1b show the high level view of the reference architectures with MBMS for LTE-Uu
based V2X communication. V2X Application Server may apply either MB2 or xMB reference points when managing
MBMS service related information via BM-SC, MB2 reference point as defined in TS 23.468 [7] provides functionality
related to group communication and x
...