3 Definitions and abbreviations
23.2873GPPArchitecture enhancements for 5G System (5GS) to support Vehicle-to-Everything (V2X) servicesRelease 17TS
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].
Application Layer connection-less group: An application layer group without group formation in the V2X application layer, e.g., sensor sharing.
Application Layer ID: An identifier identifying an entity, e.g. a vehicle, a pedestrian, an RSU within the context of a specific V2X application. The format of this identifier is outside the scope of 3GPP.
NOTE 1: The Application Layer ID could be e.g. Station ID or Vehicle ID defined by other SDOs e.g. ETSI, Society of Automotive Engineers (SAE), etc.
NOTE 2: The usage of Application Layer ID, e.g. one Application Layer ID is associated with one V2X application, one Application Layer ID is associated with more than one V2X applications, or one Application Layer ID is used for all V2X applications in the UE, is up to application layer implementation.
Application Layer managed group: An application layer group with group formation and management in the V2X application layer, e.g., platooning, cooperative adaptive cruise control.
Groupcast mode communication: It refers to V2X communication over PC5 reference point within a group of UEs where any UE in the group can act as transmitting UE and the rest act as receiving UEs. See also TS 38.300 [11] for more information. The "group" here refers to Application Layer managed group or Application Layer connection-less group.
Member ID: An identifier uniquely identifying a member in the Application Layer managed group and that is managed by the V2X application layer.
Mode of communication: Mode of communication to be used by the UE over PC5 reference point i.e. broadcast mode (LTE PC5 and NR PC5), groupcast mode (NR PC5) or unicast mode (NR PC5).
NR Tx Profile: The transmission mechanism or format to be used by the UE over NR PC5 RAT (e.g. PC5 DRX support or not), see TS 38.300 [11] and TS 38.331 [15].
V2X application: An application using one or more V2X services e.g. an active safety application in a vehicle, using V2X services such as emergency warning and vehicle to vehicle safety and awareness. A V2X application may operate towards a V2X Application Server.
V2X communication: A communication to support Vehicle-to-Everything (V2X) services leveraging Uu and / or PC5 reference points. V2X services are realized by various types of V2X applications, i.e. Vehicle-to-Vehicle (V2V), Vehicle-to-Pedestrian (V2P), Vehicle-to-Infrastructure (V2I) and Vehicle-to-Network (V2N).
V2X message: A dedicated messaging type of V2X service, for example ITS messages.
V2X service: A data service, offered to V2X applications and optionally V2X Application Servers. A V2X service belongs to one V2X service type. It may include message or other data delivery, as defined in TS 22.185 [2] and TS 22.186 [3]. A V2X service can be associated with one or more V2X applications, and a V2X application can be associated with one or more V2X services.
V2X service type: A type of V2X service, which is identified by e.g. ITS-AID (ITS Application Identifier), PSID (Provider Service Identifier) or AID (Application Identifier).
For the purposes of the present document, the following terms and definitions given in ISO 17419:2018 [4] 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 [5] apply:
Provider Service Identifier
For the purposes of the present document, the following term and definition given in CCSA YD/T 3707-2020 [27] applies:
Application Identifier
For the purposes of the present document, the following term and definition given in TS 23.285 [8] apply:
Tx Profile
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].
AF Application Function
AID Application Identifier
AS layer Access Stratum layer
ITS Intelligent Transport Systems
ITS-AID ITS Application Identifier
PFI PC5 QoS Flow Identifier
PQI PC5 5QI
PSID Provider Service Identifier
RSU Road Side Unit
V2I Vehicle-to-Infrastructure
V2N Vehicle-to-Network
V2P Vehicle-to-Pedestrian
V2V Vehicle-to-Vehicle
V2X Vehicle-to-Everything