3 Definitions of terms and abbreviations

23.3043GPPProximity based Services (ProSe) in the 5G System (5GS)Release 17TS

3.1 Terms

For the purposes of the present document, the terms 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].

5G ProSe-enabled UE: A UE that supports 5G ProSe requirements and associated procedures.

5G ProSe Direct Discovery: A procedure employed by a 5G ProSe-enabled UE to discover other 5G ProSe-enabled UEs in its vicinity based on direct radio transmissions between the two UEs with NR technology.

5G ProSe Direct Communication: A communication between two or more UEs in proximity that are 5G ProSe-enabled, by means of user plane transmission using NR technology via a path not traversing any network node.

5G ProSe UE-to-Network Relay: A 5G ProSe-enabled UE that provides functionality to support connectivity to the network for 5G ProSe Remote UE(s).

5G ProSe Remote UE: A 5G ProSe-enabled UE that communicates with a DN via a 5G ProSe UE-to-Network Relay.

Application Layer ID: An identifier identifying a 5G ProSe-enabled UE within the context of a specific application. The format of this identifier is outside the scope of 3GPP.

Direct Network Communication: One mode of network communication, where there is no 5G ProSe UE-to-Network Relay between a UE and the 5G network.

Indirect Network Communication: One mode of network communication, where there is a 5G ProSe UE-to-Network Relay between a UE and the 5G network.

Member ID: An identifier uniquely identifying a member in the Application Layer managed group and that is managed by the ProSe application layer.

Mode of communication: Mode of communication to be used by the 5G ProSe-enabled UE over PC5 reference point, i.e. broadcast mode, groupcast mode or unicast mode.

Open ProSe Discovery: ProSe Direct Discovery without explicit permission from the 5G ProSe-enabled UE being discovered, according to TS 22.278 [7].

ProSe identifier: A globally unique identifier used to identify the ProSe Application associated with the ProSe operation in 5G ProSe Direct Discovery and 5G ProSe Direct Communication. In this Release, the "Application ID" defined in TS 23.303 [3] can be used as the ProSe identifier in 5G ProSe Direct Discovery and in a consequent 5G ProSe Direct Communication.

Restricted ProSe Discovery: ProSe Direct Discovery that only takes place with explicit permission from the 5G ProSe-enabled UE being discovered, according to TS 22.278 [7].

User Info ID: The User Info ID is configured for Model A or Model B Group Member Discovery and 5G ProSe UE-to-Network Relay Discovery either for public safety or commercial applications based on the policy of the HPLMN or via the ProSe application server that allocates it. The definition of values of User Info ID is out of scope of this specification.

For the purposes of the present document, the following term and definition given in TS 23.303 [3] apply:

Application Layer Group ID

Destination Layer-2 ID

Discovery Entry ID

Discovery Filter

Discovery Query Filter

Discovery Response Filter

Geographical Area

Local PLMN

Model A

Model B

Metadata Index Mask

ProSe Application ID

ProSe Application Code

ProSe Application Mask

ProSe Query Code

ProSe Response Code

ProSe Restricted Code

ProSe Restricted Code Prefix

ProSe Restricted Code Suffix

ProSe Discovery UE ID

ProSe Layer-2 Group ID

Restricted ProSe Application User ID

Source Layer-2 ID

For the purposes of the present document, the following term and definition given in TS 23.287 [2] apply:

NR 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].

5G DDNMF 5G Direct Discovery Name Management Function

AS layer Access Stratum layer

NCGI NR Cell Global ID

PDUID ProSe Discovery UE ID

PFI PC5 QoS Flow Identifier

PQI PC5 5QI

ProSe Proximity based Services

RPAUID Restricted ProSe Application User ID

RSC Relay Service Code

RSD Rule Selection Descriptor

TAI Tracking Area Identity