3 Definitions and abbreviations

22.2803GPPMission Critical Services Common Requirements (MCCoRe)Release 19Stage 1TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [4] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [4].

Affiliated MCX Service Group Member: An MCX Service Group Member who has indicated an interest in participating in communications of the group, has been accepted by the MCX Service, and is prepared to receive and/or transmit Group Communications from/to the particular MCX Group.

Air ground air Communication: A communication (point-to-point or group) between at least one MCX User located on the ground and one or more MCX Users in helicopter(s) or aircraft while not on the ground, but in flight (in the air).

Broadcast Group Communication: A group communication where the initiating MCX User expects no response from the other MCX Users, so that when the user’s transmission is complete, so is the communication.

Group Communication: A one-to-many or many-to-many communication using an MCX Service.

In-progress Emergency: An emergency condition that has been accepted by the MCX Service, but has not yet been cancelled.

Late Entry: An Affiliated MCX Service Group Member joins in an in progress MCX Service Group Communication.

Location: The current position and, if available, information about the instantaneous velocity and direction of the MCX UE, and other attributes, e.g., a label indicating a geographic area in which the MCX UE is located.

NOTE 1: The terms "Location” and “Location information” can be used interchangeably.

MCX Service Ad hoc Group Communication: The combining of a multiplicity of MCX Users into a group for the duration of a communication and when the communication is terminated the group no longer exists.

MCX Service Administrator: An individual authorized to control MCX parameters for an organization including, for example, user and group definitions, user/group aliases, user priorities, group membership/priorities/hierarchies, security and privacy controls.

MCX Service Emergency Alert: A notification from the MCX UE to the MCX Service that the MCX User has an emergency condition.

MCX Service Emergency State: A heightened condition of alarm for an MCX User indicating a need for immediate assistance due to a personal life-threatening situation.

MCX Service Emergency Group Communication: An urgent MCX Service group communication initiated by a MCX user when there is the potential of immediate death or serious injury.

MCX Service Group: A defined set of MCX Users with associated communication dispositions (e.g. media restrictions, default priority and commencement directions).

MCX Service Group Communication: A group communication for a particular MCX Service.

MCX Service Group Member: An MCX User authorized, upon successful affiliation, to participate in Group Communications of a particular MCX Group.

MCX Service Imminent Peril Group Communication: An urgent MCX Service Group Communication initiated by an MCX user when there is a potential of death or serious injury, but is less critical than an MCX Service Emergency Group Communication.

MCX Service User Profile: The set of information associated to an MCX User that allows that user to employ the MCX Service in a given role and/or from a given MCX UE.

MCX UE: A UE that can be used to participate in MCX Services.

MCX User: A user of MCX Service, who can use an MCX UE to participate in MCX Services.

Mission Critical: Quality or characteristic of a communication activity, application, service or device, that requires low setup and transfer latency, high availability and reliability, ability to handle large numbers of users and devices, strong security and priority and pre-emption handling.

Mission Critical Applications: Generic communication applications with mission critical characteristics, traditionally encompassing push-to-talk voice (MCPTT), real-time video (MCVideo) and real-time data (MCData).

NOTE 2: The short name, MCX, is used instead, with X standing for PTT, Video or Data

Mission Critical Organization: An end-user organization that includes MCX Users and/or MCX UEs, and can include MCX Service Administrators, and can be organized hierarchically with administrative control delegated within the organization or to an outside entity.

Mission Critical Service: Communication service providing enabling capabilities for Mission Critical Applications that are provided to end users from Mission Critical Organizations or other businesses and organizations (e.g., utilities, railways).

NOTE 3: The short name, MCX Service, can be used instead.

Participant: An MCX User who is currently receiving and/or transmitting in a Group Communication or a Private Communication.

Participant type: Functional category of the Participant (e.g., first responder, second responder, dispatch, dispatch supervisor), typically defined by the MCX Service Administrators.

Private Communication: A one-to-one communication between a pair of users using an MCX Service.

Selected MCX Service Group: An MCX Service Group that a particular Affiliated MCX Service Group Member uses for transmission.

Transmitting MCX Service Group Member: An Affiliated MCX Service Group Member who is currently transmitting in a Group Communication to a Selected MCX Service Group.

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [4] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [4].

MCCoRe Mission Critical Services Common Requirements

MCData Mission Critical Data

MCPTT Mission Critical Push To Talk

MCVideo Mission Critical Video

MCX Mission Critical X, with X = PTT or X= Video or X= Data

MCX Service Mission Critical Service