3 Definitions, symbols and abbreviations
24.2813GPPMission Critical Video (MCVideo) signalling controlProtocol specificationRelease 18TS
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP 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 3GPP TR 21.905 [1].
An MCVideo user is affiliated to an MCVideo group: The MCVideo user is listed as a member of the MCVideo group in the MCVideo group document, the MCVideo server owning the MCVideo group has authorised the MCVideo user’s interest in the MCVideo group and the MCVideo server serving the MCVideo user has authorised the MCVideo user’s interest in the MCVideo group.
An MCVideo user is affiliated to an MCVideo group at an MCVideo client: The MCVideo user is affiliated to the MCVideo group, the MCVideo client has a registered IP address for an IMPU related to the MCVideo ID, and the MCVideo server serving the MCVideo user has authorised the MCVideo user’s interest in the MCVideo group at the MCVideo client.
Affiliation status: Applies for an MCVideo user to an MCVideo group and has one of the following states:
a) the "not-affiliated" state indicating that the MCVideo user is not interested in the MCVideo group and the MCVideo user is not affiliated to the MCVideo group;
b) the "affiliating" state indicating that the MCVideo user is interested in the MCVideo group but the MCVideo user is not affiliated to the MCVideo group yet;
c) the "affiliated" state indicating that the MCVideo user is affiliated to the MCVideo group and there was no indication that MCVideo user is no longer interested in the MCVideo group; and
d) the "deaffiliating" state indicating that the MCVideo user is no longer interested in the MCVideo group but the MCVideo user is still affiliated to the MCVideo group.
Ambient viewing call: a call type allowing an authorized MCVideo user to cause an MCVideo client to initiate a communication which results in no indication on the MCVideo UE that it is transmitting. Ambient viewing can be initiated by an authorized MCVideo user who wants to be viewed to by another authorized MCVideo user or can be initiated by an authorized MCVideo user who wants to view to another MCVideo user.
Ambient viewing client role: the role of an MCVideo client in an ambient viewing call, which can be that of:
a) the "viewing MCVideo user"; or
b) the "viewed-to MCVideo user".
Ambient viewing type: the type of an ambient viewing call from the perspective of the relationship of the initiator of the call to the user being viewed to. The two types of ambient viewing call are:
a) "remote-init", indicating that the viewing MCVideo user initiated the call; and
b) "local-init", indicating that the viewed-to MCVideo user initiated the call.
Functional alias status: Applies for the status of a functional alias for an MCVideo user and has one of the following states:
a) the "not-activated" state indicating that the MCVideo user has not activated the functional alias;
b) the "activating" state indicating that the MCVideo user is interested in using the functional alias but the functional alias is not yet activated for the MCVideo user;
c) the "activated" state indicating that the MCVideo user has activated the functional alias;
d) the "deactivating" state indicating that the MCVideo user is no longer interested in using the functional alias but the functional alias is still activated for the MCVideo user; and
e) the "take-over-possible" state indicating that the MCVideo user is interested in using the functional alias but the functional alias is already activated and used by another MCVideo user.
Group document: when the group is not a regroup based on a preconfigured regroup, the term "group document" used within the present document refers to the group document for that group within the GMS as specified in 3GPP TS 24.481 [24]; when the group is a regroup based on a preconfigured group, the term "group document" used within the present document refers to the group document for the preconfigured group as specified in 3GPP TS 24.481 [24] restricted to the users or groups included in the regroup stored by the MCVideo server at the time of the regroup creation, see clause 21.
Group identity: An MCVideo group identity or a temporary MCVideo group identity.
For the purpose of the present document, the following terms and definitions given in 3GPP TS 24.581 [5] apply:
MBMS bearer
MBMS subchannel
MCVideo client ID: is a globally unique identification of a specific MCVideo client instance. MCVideo client ID is a UUID URN as specified in IETF RFC 4122 [58].
MCVideo emergency alert state: MCVideo client internal perspective of the state of an MCVideo emergency alert.
MCVideo emergency group state: MCVideo client internal perspective of the in-progress emergency state of an MCVideo group maintained by the controlling MCVideo function.
MCVideo emergency group call state: MCVideo client internal perspective of the state of an MCVideo emergency group call.
MCVideo emergency private call: MCVideo emergency call between two MCVideo users that is initiated as a private call or a first-to-answer call with emergency indication, or without emergency indication when the MCVideo emergency state is already set,
MCVideo emergency private call state: MCVideo client internal perspective of the state of an MCVideo emergency private call.
MCVideo emergency private priority state: MCVideo client internal perspective of the in-progress emergency private call state of the two participants of an MCVideo emergency private call maintained by the controlling MCVideo function.
MCVideo imminent peril group call state: MCVideo client internal perspective of the state of an MCVideo imminent peril group call.
MCVideo imminent peril group state: MCVideo client internal perspective of the state of an MCVideo imminent peril group.
MCVideo private call: MCVideo call between two MCVideo users that is initiated as a private call or a first-to-answer call.
MCVideo private emergency alert state: MCVideo client internal perspective of the state of an MCVideo private emergency alert targeted to an MCVideo user.
MCVideo video media: streaming video and audio media used in mission critical video systems as defined by 3GPP TS 22.179 [77] and 3GPP TS 23.281 [26].
Media-transmission control entity: A media control resource shared by participants in an MCVideo session, controlled by a state machine to ensure that participants can access the media resource at the same time.
N2: The maximum number of simultaneous affiliations to MCVideo groups that the MCVideo client may have. The value of N2 is specified in the <MaxAffiliationsN2> element of the <Common> element of the MCVideo user profile and corresponds to the parameter Nc2 specified in 3GPP TS 22.280 [75].
Private call: A call initiated by one user towards one other user with the intention to establish an MCVideo private call or MCVideo emergency private call.
Remote change of an MCVideo user’s selected group: A mechanism allowing an authorised user to remotely change the selected group of another MCVideo user.
Temporary MCVideo group identity: A group identity representing a temporary grouping of MCVideo group identities formed by the group regrouping operation as specified in 3GPP TS 24.481 [24].
Trusted mutual aid: A business relationship whereby the Partner MCVideo system is willing to share the details of the members of an MCVideo group that it owns with the Primary MCVideo system.
Untrusted mutual aid: A business relationship whereby the Partner MCVideo system is not willing to share the details of the members of an MCVideo group that it owns with the Primary MCVideo system.
User Requested Application Priority: The requested priority as defined in 3GPP TS 23.280 [74]. How the server determines the priority for the requested communication based on requested priority and in combination with other factors is up to MCVideo server implementation.
Viewing MCVideo user: the MCVideo user in an ambient viewing call receiving the media transmission from the viewed-to MCVideo user;
Viewed-to MCVideo user: the MCVideo user in an ambient viewing call who is being viewed to, may or may not be aware of being viewed to depending on ambient viewing type of the call.
For the purposes of the present document, the following terms and definitions given in 3GPP TS 22.179 [77] apply:
In-progress emergency
MCVideo emergency alert
MCVideo emergency group call
MCVideo emergency state
Partner MCVideo system
Primary MCVideo system
For the purpose of the present document, the following terms and definitions given in 3GPP TS 23.281 [26] apply:
Pre-selected MCVideo user profile
Selected MCVideo user profile
For the purpose of the present document, the following terms and definitions given in 3GPP TS 33.180 [8] apply:
Client Server Key (CSK)
Multicast Floor Control Key (MKFC)
Multicast Signalling Key (MuSiK)
Multicast Signalling Key Identifier (MuSiK-ID)
MBMS subchannel control key (MSCCK)
MBMS subchannel control key identifier (MSCCK-ID)
Private Call Key (PCK)
Signalling Protection Key (SPK)
XML Protection Key (XPK)
Functional alias status: Applies for the status of a functional alias for an MCVideo user and has one of the following states:
a) the "not-activated" state indicating that the MCVideo user has not activated the functional alias;
b) the "activating" state indicating that the MCVideo user is interested in using the functional alias but the functional alias is not yet activated for the MCVideo user;
c) the "activated" state indicating that the MCVideo user has activated the functional alias; and
d) the "deactivating" state indicating that the MCVideo user is no longer interested in using the functional alias but the functional alias is still activated for the MCVideo user.
For the purpose of the present document, the following terms and definitions given in 3GPP TS 22.280 [75] apply:
Functional alias
3.2 Symbols
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP 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 3GPP TR 21.905 [1].
CSK Client-Server Key
ECGI E-UTRAN Cell Global Identification
IPEG In-Progress Emergency Group
IPEPC In-Progress Emergency Private Call
IPIG In-Progress Imminent peril Group
MBMS Multimedia Broadcast and Multicast Service
MBSFN Multimedia Broadcast multicast service Single Frequency Network
MC Mission Critical
MCS Mission Critical Service
MCVideo Mission Critical Video
MCVideo group ID MCVideo group Identity
MVEA MCVideo Emergency Alert
MVEG MCVideo Emergency Group
MVEGC MCVideo Emergency Group Call
MVEPC MCVideo Emergency Private Call
MVEPP MCVideo Emergency Private Priority
MVES MCVideo Emergency State
MIME Multipurpose Internet Mail Extensions
MVIG MCVideo Imminent peril Group
MVIGC MCVideo Imminent peril Group Call
MONP MCPTT Off-Network Protocol
MVPEA MCVideo Private Emergency Alert
NAT Network Address Translation
PCC Policy and Charging Control
PCCB Private Call Call-Back
PLMN Public Land Mobile Network
QCI QoS Class Identifier
RTP Real-time Transport Protocol
SAI Service Area Identifier
SDP Session Description Protocol
SIP Session Initiation Protocol
SPK Signalling Protection Key
SSRC Synchronization SouRCe
TGI Temporary MCVideo Group Identity
TMGI Temporary Mobile Group Identity
UE User Equipment
URI Uniform Resource Identifier
XPK XML Protection Key