3 Definitions and abbreviations

22.4683GPPGroup Communication System Enablers (GCSE)Release 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].

Group Member: A user assigned to a GCSE Group.

GCSE Group: A set of Group Members.

Receiver Group Member: A Group Member of a GCSE Group that has interest expressed in receiving ongoing or future Group Communications of that GCSE Group.

Transmitter Group Member: A Group Member of a GCSE Group that is authorized to transmit an ongoing or future Group Communications for that GCSE Group.

Group Communication: Communication from Transmitter Group Members to Receiver Group Members.

Group Communication System Enabler (GCSE): A 3GPP feature enabling an application layer functionality to provide Group Communication.

Multipoint Service: A service used to distribute the same content to many UEs in a resource efficient way.

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].

CN Core Network

GCSE Group Communication System Enabler

LMR Land Mobile Radio

ProSe Proximity Services

PTT Push to Talk

RAN Radio Access Network

TETRA TErrestrial Trunked Radio

TCCA TETRA + Critical Communications Association