3GPP TS 23.287 V17.3.0 (2022-06)
Technical Specification
3rd Generation Partnership Project;
Technical Specification Group Services and System Aspects;
Architecture enhancements for 5G System (5GS) to support
Vehicle-to-Everything (V2X) services
(Release 17)
The present document has been developed within the 3rd Generation Partnership Project (3GPP
TM
) and may be further elaborated for the purposes of 3GPP.
The present document has not been subject to any approval process by the 3GPP
Organizational Partners and shall not be implemented.
This Specification is provided for future development work within 3GPP
only. The Organizational Partners accept no liability for any use of this Specification.
Specifications and Reports for implementation of the 3GPP
TM
system should be obtained via the 3GPP Organizational Partners' Publications Offices.
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3GPP
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The copyright and the foregoing restriction extend to reproduction in all media.
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Contents
Foreword .............................................................................................................................................................6
1 Scope.........................................................................................................................................................7
2 References.................................................................................................................................................7
3 Definitions and abbreviations ...................................................................................................................8
3.1 Definitions ...........................................................................................................................................................8
3.2 Abbreviations.......................................................................................................................................................9
4 Architecture model and concepts............................................................................................................10
4.1 General concept .................................................................................................................................................10
4.2 Architectural reference model ...........................................................................................................................10
4.2.1 PC5 and Uu based V2X architecture reference model ................................................................................10
4.2.1.1 Non-roaming 5G System architecture for V2X communication over PC5 and Uu reference points ....10
4.2.1.2 Roaming 5G System architecture for V2X communication over PC5 and Uu reference points ...........11
4.2.1.3 Inter-PLMN 5G System architecture for V2X communication over PC5 reference point....................12
4.2.2 AF-based service parameter provisioning for V2X communications..........................................................12
4.2.3 Reference points...........................................................................................................................................12
4.2.4 Service-based interfaces...............................................................................................................................13
4.3 Architecture reference model for interworking with EPS V2X ........................................................................13
4.4 Functional entities..............................................................................................................................................14
4.4.1 UE ................................................................................................................................................................14
4.4.2 PCF ..............................................................................................................................................................15
4.4.3 V2X Application Server ..............................................................................................................................15
4.4.4 AMF.............................................................................................................................................................15
4.4.5 UDM ............................................................................................................................................................15
4.4.6 UDR .............................................................................................................................................................16
4.4.7 NRF..............................................................................................................................................................16
4.4.8 NEF ..............................................................................................................................................................16
5 High level functionality and features......................................................................................................16
5.1 Authorization and Provisioning for V2X communications...............................................................................16
5.1.1 General.........................................................................................................................................................16
5.1.2 Authorization and Provisioning for V2X communications over PC5 reference point ................................17
5.1.2.1 Policy/Parameter provisioning ...............................................................................................................17
5.1.2.2 Principles for applying parameters for V2X communications over PC5 reference point......................18
5.1.3 Authorization and provisioning for V2X communications over Uu reference point ..................................20
5.1.3.1 Policy/Parameter provisioning ...............................................................................................................20
5.2 V2X communication..........................................................................................................................................20
5.2.1 V2X communication over PC5 reference point...........................................................................................20
5.2.1.1 General ...................................................................................................................................................20
5.2.1.2 Broadcast mode communication over PC5 reference point ...................................................................21
5.2.1.3 Groupcast mode communication over PC5 reference point...................................................................21
5.2.1.4 Unicast mode communication over PC5 reference point.......................................................................22
5.2.1.5 IP address allocation...............................................................................................................................23
5.2.2 V2X communication over Uu reference point.............................................................................................23
5.2.2.1 V2X communication via unicast ............................................................................................................23
5.2.3 V2X communication over PC5 or Uu reference point.................................................................................24
5.2.3.1 General ...................................................................................................................................................24
5.3 V2X Application Server discovery....................................................................................................................24
5.3.1 General.........................................................................................................................................................24
5.3.2 Multiple V2X Application Server and Localized V2X Application Server discovery and routing ............25
5.4 QoS handling for V2X communication.............................................................................................................25
5.4.1 QoS handling for V2X communication over PC5 reference point ..............................................................25
5.4.1.1 QoS model..............................................................................................................................................25
5.4.1.1.1 General overview..............................................................................................................................25
5.4.1.1.2 Deriving PC5 QoS parameters and assigning PFI for PC5 QoS Flow.............................................27
5.4.1.1.3 Handling of PC5 QoS Flows based on PC5 QoS Rules ...................................................................27
5.4.1.1.4 PC5 Packet Filter Set........................................................................................................................29
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5.4.1.2 QoS handling for broadcast mode V2X communication over PC5 reference point ..............................29
5.4.1.3 QoS handling for groupcast mode V2X communication over PC5 reference point..............................30
5.4.1.4 QoS handling for unicast mode V2X communication over PC5 reference point ..................................30
5.4.2 PC5 QoS parameters ....................................................................................................................................30
5.4.2.1 PQI .........................................................................................................................................................30
5.4.2.2 PC5 Flow Bit Rates ................................................................................................................................30
5.4.2.3 PC5 Link Aggregated Bit Rates .............................................................................................................31
5.4.2.4 Range......................................................................................................................................................31
5.4.2.5 Default Values........................................................................................................................................31
5.4.3 PC5 QoS characteristics...............................................................................................................................31
5.4.3.1 General ...................................................................................................................................................31
5.4.3.2 Resource Type........................................................................................................................................31
5.4.3.3 Priority Level..........................................................................................................................................32
5.4.3.4 Packet Delay Budget ..............................................................................................................................32
5.4.3.5 Packet Error Rate ...................................................................................................................................32
5.4.3.6 Averaging Window ................................................................................................................................32
5.4.3.7 Maximum Data Burst Volume ...............................................................................................................32
5.4.4 Standardized PQI to QoS characteristics mapping ......................................................................................32
5.4.5 QoS handling for V2X communication over Uu reference point ................................................................34
5.4.5.1 General ...................................................................................................................................................34
5.4.5.2 Notification on QoS Sustainability Analytics to the V2X Application Server ......................................34
5.4.5.2.1 General..............................................................................................................................................34
5.4.5.2.2 Functional description ......................................................................................................................34
5.4.5.3 QoS Change based on Extended NG-RAN Notification to support Alternative Service
Requirements..........................................................................................................................................34
5.5 Subscription to V2X services ............................................................................................................................35
5.6 Identifiers...........................................................................................................................................................35
5.6.1 Identifiers for V2X communication over PC5 reference point....................................................................35
5.6.1.1 General ...................................................................................................................................................35
5.6.1.2 Identifiers for broadcast mode V2X communication over PC5 reference point....................................36
5.6.1.3 Identifiers for groupcast mode V2X communication over PC5 reference point....................................36
5.6.1.4 Identifiers for unicast mode V2X communication over PC5 reference point........................................36
5.7 Support for V2X communication for UEs in limited service state....................................................................37
5.8 Interworking between EPS V2X and 5GS V2X................................................................................................37
5.8.1 V2X Policy and parameter provisioning......................................................................................................37
5.8.2 PC5 Operation..............................................................................................................................................37
5.8.3 Mobility between EPS and 5GS over Uu ....................................................................................................37
5.9 Support of QoS aware NR PC5 power efficiency for pedestrian UEs ..............................................................38
6 Functional description and information flows ........................................................................................38
6.1 Control and user plane stacks ............................................................................................................................38
6.1.1 User plane for NR PC5 reference point supporting V2X services ..............................................................38
6.1.2 Control plane for NR PC5 reference point supporting V2X services..........................................................39
6.2 Procedures for Service Authorization and Provisioning to UE.........................................................................40
6.2.1 General.........................................................................................................................................................40
6.2.2 PCF based Service Authorization and Provisioning to UE .........................................................................40
6.2.3 PCF discovery..............................................................................................................................................40
6.2.4 Procedure for UE triggered V2X Policy provisioning.................................................................................41
6.2.5 AF-based service parameter provisioning for V2X communications over control plane............................41
6.3 Procedures for V2X communication over PC5 reference point ........................................................................41
6.3.1 Broadcast mode V2X communication over PC5 reference point................................................................41
6.3.2 Groupcast mode V2X communication over PC5 reference point................................................................43
6.3.3 Unicast mode V2X communication over PC5 reference point....................................................................44
6.3.3.1 Layer-2 link establishment over PC5 reference point............................................................................44
6.3.3.2 Link identifier update for a unicast link .................................................................................................48
6.3.3.3 Layer-2 link release over PC5 reference point.......................................................................................49
6.3.3.4 Layer-2 link modification for a unicast link...........................................................................................49
6.3.3.5 Layer-2 link maintenance over PC5 reference point..............................................................................50
6.4 Procedures for V2X communication over Uu reference point ..........................................................................51
6.4.1 Procedure for notification on QoS Sustainability Analytics to the V2X Application Server......................51
6.5 Procedures for Service Authorization to NG-RAN for V2X communications over PC5 reference point ........53
6.5.1 General.........................................................................................................................................................53
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6.5.2 Registration procedure .................................................................................................................................53
6.5.3 Service Request procedure...........................................................................................................................53
6.5.4 N2 Handover procedure...............................................................................................................................54
6.5.5 Xn Handover procedure...............................................................................................................................54
6.5.6 Subscriber Data Update Notification to AMF .............................................................................................54
6.5.7 Delivery of PC5 QoS parameters to NG-RAN ............................................................................................54
6.5.8 PC5 Capability for V2X indication and V2X related information per PC5 RAT .......................................55
Annex A (informative): Application Function influence based edge computing for V2X services.........56
Annex B (informative): Road Side Unit (RSU) implementation options ...................................................57
Annex C (informative): Change history........................................................................................................58
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