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6.2.2.2 Common services core
The description of the common services core entities is contained in common functional architecture for MC services over LTE in 3GPP TS 23.280 [6].
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6.2.2.3 MCVideo application service
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6.2.2.3.1 MCVideo client
The MCVideo client functional entity acts as the user agent for all MCVideo application transactions. The MCVideo client is responsible for remote device control. This functional entity is located in the UE for both on-network and off-network operations.
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6.2.2.3.2 MCVideo server
The MCVideo server functional entity provides centralised support for MCVideo services. All the MCVideo clients supporting users belonging to a single group are required to use the same MCVideo server for that group. An MCVideo client supporting a user involved in multiple groups can have relationships with multiple M...
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6.2.2.3.3 Media distribution function
The media distribution function is responsible for the distribution of media to MCVideo clients. The media distribution function may use different IP addresses than the MCVideo server. By means of information provided by the MCVideo server (e.g. IP addresses, transport layer ports), it will provide the following functi...
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6.2.2.3.4 Media mixer
This functional entity exists on the UE and provides support for sending and receiving one or multiple media streams. It also provides support for combining multiple media streams into one media stream through the enforcement of media policy information. It supports the storing of a media stream as MCVideo content file...
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6.2.2.3.5 MCVideo user database
This functional entity contains information of the MCVideo user profile associated with an MCVideo ID that is held by the MCVideo service provider at the application plane. The MCVideo user profile is determined by the mission critical organization, the MCVideo service provider, and potentially the MCVideo user. The M...
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6.2.2.3.6 Transmission control server
This functional entity provides support for centralised transmission control for on-network and distributed transmission control for off-network operation. It may schedule transmission requests according to uplink criteria from different transmission control participants, send a notification to all transmission control...
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6.2.2.3.7 Transmission control participant
The transmission control participant functional entity is responsible for handling outgoing transmission requests and the incoming video stream invitations and notifications. This functional entity is located in the UE for both on-network and off-network operations.
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6.2.2.3.8 MC gateway server
The MC gateway server provides support for MCVideo interconnection services with a partner MCVideo system in a different trust domain whilst providing topology hiding. It acts as a proxy for one or more MCVideo servers in the partner MCVideo system without needing to expose the MCVideo servers in the primary MCVideo sy...
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6.3 Reference points
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6.3.1 Reference point MCVideo-1 (between the MCVideo client and the MCVideo server)
The MCVideo-1 reference point, which exists between the MCVideo client and the MCVideo server, is used for MCVideo application signalling for establishing a session in support of MCVideo service.
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6.3.2 Reference point MCVideo-2 (between the MCVideo server and the MCVideo user database)
The MCVideo-2 reference point, which exists between the MCVideo server and the MCVideo user database, is used by the MCVideo server to obtain information about a specific user.
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6.3.3 Reference point MCVideo-3 (between the MCVideo server and the MCVideo server and between the MCVideo server and the MC gateway server)
The MCVideo-3 reference point exists between the MCVideo server and another MCVideo server and between the MCVideo server and the MC gateway server, and is used for MCVideo application signalling.
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6.3.4 Reference point MCVideo-4 (between the transmission control participant and the transmission control server)
The MCVideo-4 reference point, which exists between the transmission control participant and the transmission control server, is used for MCVideo transmission control signalling over unicast. The MCVideo-4 reference point uses the SGi reference point defined in 3GPP TS 23.002 [4]. 6.3.4A Reference point MCVideo-5 (bet...
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6.3.5 Reference point MCVideo-7 (between the media distribution function and the media mixer)
The MCVideo-7 reference point, which exists between the media distribution function and the media mixer, is used to exchange unicast media between the media distribution function of the MCVideo server and the media mixer of the MCVideo client. The MCVideo-7 reference point uses the SGi reference point defined in 3GPP T...
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6.3.6 Reference point MCVideo-8 (between the media distribution function and the media mixer)
The MCVideo-8 reference point, which exists between the media distribution function and the media mixer, is used by the media distribution function of the MCVideo server to send multicast media to the media mixer of the MCVideo client. The MCVideo-8 reference point uses the MB2-U interface defined in 3GPP TS 23.468 [9]...
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6.3.7 Reference point MCVideo-9 (between the transmission control participant and the transmission control server)
The MCVideo-9 reference point, which exists between the transmission control participant and the transmission control server, is used MCVideo transmission control signalling over multicast. The MCVideo-9 reference point uses the MB2-U interface defined in 3GPP TS 23.468 [9].
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6.3.8 Reference point MCVideo-10 (between the MC gateway server and the MC gateway server in a different MCVideo system)
The MCVideo-10 reference point, which exists between the MC gateway server and the MC gateway server in an interconnected MCVideo system for MCVideo application signalling for establishing MCVideo sessions, shall use the SIP-3 reference point for transport and routing of signalling. Floor control signalling and media a...
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7 Procedures and information flows
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7.1 Group call
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7.1.1 General
Group calls are enabled in both on-network and off-network.
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7.1.2 On-network group call
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7.1.2.1 General
This subclause contains procedures for group call across a single and multiple MCVideo servers, and associated functions such as emergency call, broadcast call and others. Two variations of group call model are described in subclause 7.1.2.3, the pre-arranged group call and the chat group call. Each of the subsequent ...
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7.1.2.2 Information flows for group call in on-network
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7.1.2.2.1 Group call request (MCVideo client – MCVideo server)
Table 7.1.2.2.1-1 describes the information flow group call request from the MCVideo client to the MCVideo server. Table 7.1.2.2.1-1: Group call request (MCVideo client – MCVideo server) Information Element Status Description MCVideo ID M The MCVideo ID of the calling party Functional alias O The functional a...
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7.1.2.2.2 Group call request
Table 7.1.2.2.2-1 describes the information flow group call request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.2-1: Group call request Information Element Status Description MCVideo ID M The MCVideo ID of the calling party Functional alias O ...
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7.1.2.2.3 Group call response
Table 7.1.2.2.3-1 describes the information flow group call response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.3-1: Group call response Information Element Status Description MCVideo ID M The MCVideo ID of the calling party MCVideo group ID M...
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7.1.2.2.4 Group call response (MCVideo client – MCVideo server)
Table 7.1.2.2.4-1 describes the information flow group call response from the MCVideo client to the MCVideo server. Table 7.1.2.2.4-1: Group call response (MCVideo client – MCVideo server) Information Element Status Description MCVideo ID M The MCVideo ID of the target MCVideo group member MCVideo group ID M ...
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7.1.2.2.5 Group call release request
Table 7.1.2.2.5-1 describes the information flow group call release request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.5-1: Group call release request Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member...
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7.1.2.2.6 Group call release request (MCVideo client – MCVideo server)
Table 7.1.2.2.6-1 describes the information flow group call release request from the MCVideo client to the MCVideo server. Table 7.1.2.2.6-1: Group call release request (MCVideo client – MCVideo server) Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member MCVideo group ...
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7.1.2.2.7 Group call release response
Table 7.1.2.2.7-1 describes the information flow group call release response from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server. Table 7.1.2.2.7-1: Group call release response Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group memb...
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7.1.2.2.8 Group call rejoin request
Table 7.1.2.2.8-1 describes the information flow group call rejoin request from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server. Table 7.1.2.2.8-1: Group call rejoin request Information Element Status Description MCVideo ID M The MCVideo ID of the re-joining MCVideo gro...
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7.1.2.2.9 Group call rejoin response
Table 7.1.2.2.9-1 describes the information flow group call rejoin response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.9-1: Group call rejoin response Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member...
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7.1.2.2.10 Group join request
Table 7.1.2.2.10-1 describes the information flow group join request from the MCVideo server to the MCVideo server and from the MCVideo client to the MCVideo server. Table 7.1.2.2.10-1: Group join request Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member joining the g...
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7.1.2.2.11 Group join response
Table 7.1.2.2.11-1 describes the information flow group join response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.11-1: Group join response Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member joining the...
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7.1.2.2.12 Group call leave request
Table 7.1.2.2.12-1 describes the information flow group call leave request from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.12-1: Group call leave request Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member w...
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7.1.2.2.13 Group call leave response
Table 7.1.2.2.13-1 describes the information flow group call leave response from the MCVideo client to the MCVideo server and from the MCVideo server to the MCVideo server. Table 7.1.2.2.13-1: Group call leave response Information Element Status Description MCVideo ID M The MCVideo ID of the MCVideo group member...
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7.1.2.2.14 Void
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7.1.2.2.15 Void
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7.1.2.2.16 Void
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7.1.2.2.17 Void
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7.1.2.2.18 MCVideo emergency group call request
Table 7.1.2.2.18-1 describes the information flow emergency group call request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.18-1: MCVideo emergency group call request Information Element Status Descripti...
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7.1.2.2.19 MCVideo emergency group call response
Table 7.1.2.2.19-1 describes the information flow emergency group call response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.19-1: MCVideo emergency group call response Information Element Status Descrip...
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7.1.2.2.20 MCVideo in-progress emergency group state cancel request
Table 7.1.2.2.20-1 describes the information flow MCVideo in-progress emergency group state cancel request from the MCVideo client to the MCVideo server and from the MCVideo server to the MCVideo server. NOTE: In Rel-14 and Rel-13 versions of this specification the name of this information flow is "MCVideo emergency g...
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7.1.2.2.21 MCVideo in-progress emergency group state cancel response
Table 7.1.2.2.21-1 describes the information flow MCVideo in-progress emergency group state cancel response from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. NOTE: In Rel-14 and Rel-13 versions of this specification the name of this information flow is "MCVideo emergency...
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7.1.2.2.22 MCVideo imminent peril group call request
Table 7.1.2.2.22-1 describes the information flow MCVideo imminent peril group call request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.22-1: MCVideo imminent peril group call request Information Element ...
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7.1.2.2.23 MCVideo imminent peril group call response
Table 7.1.2.2.23-1 describes the information flow MCVideo imminent peril group call response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.23-1: MCVideo imminent peril group call response Information Elemen...
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7.1.2.2.24 MCVideo imminent peril group call cancel request
Table 7.1.2.2.24-1 describes the information flow MCVideo imminent peril group call cancel request from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.24-1: MCVideo imminent peril group call cancel request Inform...
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7.1.2.2.25 MCVideo imminent peril group call cancel response
Table 7.1.2.2.25-1 describes the information flow MCVideo imminent peril group call cancel response from the MCVideo client to the MCVideo server, from the MCVideo server to the MCVideo server and from the MCVideo server to the MCVideo client. Table 7.1.2.2.25-1: MCVideo imminent peril group call cancel response Info...
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7.1.2.3 Group call within one MC system
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7.1.2.3.1 Group call models
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7.1.2.3.1.1 Pre-arranged group call
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7.1.2.3.1.1.1 General
A pre-arranged group call is initiated by one of the affiliated group members. The initiation of a pre-arranged group call results in all other affiliated group members being invited. Media plane resources are reserved (on-demand) or a pre-established session is associated during the group call setup procedure and rele...
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7.1.2.3.1.1.2 Pre-arranged group call setup
The procedure enables the scenario where an MCVideo client is initiating an MCVideo group call with unicast signalling for communicating with the affiliated members of that group. Procedures in figure 7.1.2.3.1.1.2-1 are the signalling control plane procedures for the MCVideo client initiating establishment of an MCVi...
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7.1.2.3.1.1.3 Release pre-arranged group call
The procedure enables the scenario where an MCVideo server initiates the termination of an ongoing MCVideo group call for all the participants of that group call, since at least one of the termination conditions are met e.g., last participant leaving, second last participant leaving, initiator leaving, or minimum numbe...
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7.1.2.3.1.1.4 Late entry pre-arranged group call
Procedures in figure 7.1.2.3.1.1.4-1 are the signalling control plane procedures for the MCVideo server requesting a newly affiliated member or a member coming back from out of coverage to join an ongoing MCVideo group call. Pre-conditions: 1. MCVideo group is previously defined on the group management server with MC...
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7.1.2.3.1.1.5 Rejoining call
Procedures in figure 7.1.2.3.1.1.5-1 are the signalling control plane procedures for the MCVideo client to rejoin an ongoing MCVideo group call (e.g. coming back from out of coverage). Pre-condition:
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1 It is assumed that MCVideo users on MCVideo client 2 to MCVideo client n are on an ongoing call.
2. Optionally, the MCVideo client 1 may have activated functional alias to be used. 3. The MCVideo server may have subscribed to the MCVideo functional alias controlling server within the MC system for functional alias activation/de-activation updates. Figure 7.1.2.3.1.1.5-1: Rejoin call 1. MCVideo client 1 has ne...
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7.1.2.3.1.2 Chat group call
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7.1.2.3.1.2.1 General
In a chat group (restricted) call model, the MCVideo user individually joins a group call without being explicitly invited by the MCVideo server. The establishment of a chat group (restricted) call does not result in other group members being invited. Figure 7.1.2.3.1.2.2-1 describes the basic procedure for the MCVid...
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7.1.2.3.1.2.2 Chat group call setup
MCVideo client 1, client 2, and client 3 are served by the home MCVideo service provider in figure 7.1.2.3.1.2.2-1. Pre-conditions: 1. MCVideo user 2 and MCVideo user 3 have previously joined (affiliated) to the group call. MCVideo client 1, client 2, and client 3 are registered and all users (MCVideo user 1, user 2...
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7.1.2.3.1.2.3 Release chat group call
The procedure describes the case where the MCVideo server releases an ongoing MCVideo group call for all the participants of that group call, since at least one of the conditions for release are met e.g. due to chat duration expiry, last participant leaving or initiator leaving. NOTE 1: The procedure for an MCVideo us...
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7.1.2.3.1.2.5 Late entry chat group call, newly joined group member
Procedures in figure 7.1.2.3.1.2.5-1 are those for a group member entering an ongoing MCVideo group call, i.e. performing a late entry. Pre-conditions: 1. MCVideo user 2 and MCVideo user 3 have previously joined to the group. MCVideo client 1, client 2, and client 3 are registered and all users (MCVideo user 1, user...
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4 The MCVideo server may have subscribed to the MCVideo functional alias controlling server within the MC system for functional alias activation/de-activation updates.
5. The MCVideo user on MCVideo client 1 may have bound a functional alias to the MCVideo group ID (3GPP TS 23.280 [6]). Figure 7.1.2.3.1.2.5-1: Late entry of a newly joined group member 1. MCVideo client 1 sends a group join request with the MCVideo group ID of the desired group. It contains the MCVideo user's MCVi...
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7.1.2.3.1.2.6 Late entry chat group call, MCVideo client coming back from out of coverage
Procedures in figure 7.1.2.3.1.2.6-1 are those for an MCVideo client coming back from out of coverage during an ongoing MCVideo group call. Pre-conditions: 1. MCVideo users using MCVideo client 1, MCVideo client 2 and MCVideo client 3 are in an ongoing group call when MCVideo client1 goes out of radio coverage. 2....
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7.1.2.3.2 Exiting group call due to de-affiliation
Procedures in figure 7.1.2.3.2-1 are the signalling control plane procedures for the MCVideo server requesting a newly de-affiliated member to leave an ongoing MCVideo group call. Pre-conditions: 1. MCVideo group is previously defined on the group management server with MCVideo users affiliated to that group. All mem...
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7.1.2.3.3 MCVideo user leaving a group call
Procedures in figure 7.1.2.3.3-1 are the signalling control plane procedures for the MCVideo user leaving an ongoing MCVideo group call. Pre-conditions: 1. MCVideo group is previously defined on the group management server with MCVideo users affiliated to that group. All members of the group belong to the same MC sys...
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7.1.2.4 Broadcast group call
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7.1.2.4.1 General
A broadcast group call is a special group call where the initiating MCVideo user expects no response from the other MCVideo users, i.e. no response from the recipients is required to start media transmission and the call ends when the media transmission is complete.
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7.1.2.4.2 Common broadcast group call procedure
Only the call originator can transmit media during the broadcast group call and the broadcast group call is released when the transmission is complete. Figure 7.1.2.4.2-1 illustrates the common procedure both for broadcast group call on group-broadcast group, user-broadcast group, broadcast regrouped group, and pre-ar...
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7.1.2.5 Emergency and imminent peril procedures
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7.1.2.5.1 MCVideo emergency group call
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7.1.2.5.1.1 MCVideo emergency group call commencement
The procedure describes the case where an MCVideo client is initiating an MCVideo emergency group call with the affiliated MCVideo group members of that MCVideo group. An MCVideo client in the MCVideo emergency state gains elevated access privilege for all of the MCVideo user's mission critical applications. Initiating...
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4 MCVideo client 1, MCVideo client 2 and MCVideo client 3 may have an activated functional alias to be used during the emergency group communication.
5. The MCVideo server may have subscribed to the MCVideo functional alias controlling server within the MC system for functional alias activation/de-activation updates. NOTE 2: Alternatively, the client could have been provisioned for emergency behaviour on the selected group. Figure 7.1.2.5.1.1-1: MCVideo emergenc...
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7.1.2.5.1.2 MCVideo group call upgraded to an MCVideo emergency group call
The procedure describes the case where an authorized MCVideo user is upgrading an MCVideo group call to an MCVideo emergency group call while the MCVideo group call is already in progress. Procedures in figure 7.1.2.5.1.2-1 are the signalling control plane procedures for the MCVideo client upgrading an MCVideo group c...
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7.1.2.5.1.3 MCVideo in-progress emergency group state cancel
NOTE 1: In Rel-14 and Rel-13 versions of this specification the title of this subclause is "MCVideo emergency group call cancel". The procedure describes the case where an MCVideo client cancels an MCVideo group's in-progress emergency state. The emergency state of the group may alternatively be cancelled by the emerg...
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7.1.2.5.2 MCVideo imminent peril group call
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7.1.2.5.2.1 MCVideo imminent peril group call commencement
The procedure focuses on the case where an authorized MCVideo user is initiating an imminent peril group call for communicating with the affiliated MCVideo members of that MCVideo group. This procedure will gain elevated access privilege for the MCVideo client if it is not already in that state. The access privilege fo...
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7.1.2.5.2.2 Imminent peril group call upgrade
The procedure focuses on the case where an authorized MCVideo user is upgrading an MCVideo group call to an imminent peril group call while the MCVideo group call is already in progress. Procedures in figure 7.1.2.5.2.2-1 are the signalling control plane procedures for the MCVideo client upgrading an MCVideo group cal...
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7.1.2.5.2.3 MCVideo imminent peril group call cancel
The procedure focuses on the case where an authorized MCVideo user cancels an MCVideo group's in-progress imminent peril state. Procedures in figure 7.1.2.5.2.3-1 are the signalling control plane procedures for the MCVideo client cancelling an MCVideo group's in-progress imminent peril state. NOTE 1: The end of the i...
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7.1.2.6 MCVideo emergency alert (on-network and off-network)
The MCVideo server shall support the procedures and related information flows as specified in subclauses 10.10 of 3GPP TS 23.280 [6] with the following clarifications: - The MC service ID is the MCVideo ID; - The MC service server is the MCVideo server; - The MC service group ID is the MCVideo group ID and - The M...
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7.1.2.8 Group call handling with preconfigured regroup update procedures
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7.1.2.8.1 Call request to MCVideo group during an in-progress preconfigured group regroup
Figure 7.1.2.8.1-1 illustrates the procedure when a user attempts to setup an MCVideo group call on a group involved in an in-progress preconfigured MCVideo group regroup. Pre-conditions: - The MCVideo client is an affiliated member of MCVideo group A that is part of an in-progress preconfigured group regroup with M...
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7.1.2.8.2 Call request to regroup group after group regroup has been cancelled
Figure 7.1.2.8.2-1 illustrates the procedure when a user attempts to setup a MCVideo group call on a preconfigured regroup group after the preconfigured MCVideo group regroup has been cancelled. Pre-conditions: - The MCVideo client is a member of MCVideo group A that was part of an in-progress preconfigured group re...
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7.1.3 Off-network group communications
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7.1.3.1 General
This subclause contains procedures for group communications directly between multiple MCVideo clients without involving the network to provide associated functions. Off-network MCVideo communications are based on ProSe capabilities as described in clause 7.18. The group communication setup is described in subclause 7....
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7.1.3.2 Information flows for off-network group communications
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7.1.3.2.1 Group communication announcement
Table 7.1.3.2.1-1 describes the information flow for the group communication announcement sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.1-1: Group communication announcement Information Element Status Description MCVideo ID M The identity of the MCVideo user sending the announcement MCVid...
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7.1.3.2.2 Group communication answer response
Table 7.1.3.2.2-1 describes the information flow for the group communication answer response sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.2-1: Group communication answer response Information Element Status Description MCVideo ID M The identity of the MCVideo user sending the response MCV...
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7.1.3.2.3 MCVideo upgrade to emergency group communication
Table 7.1.3.2.3-1 describes the information flow for the MCVideo upgrade to emergency sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.3-1: MCVideo upgrade to emergency group communication Information Element Status Description MCVideo ID M The identity of the MCVideo user upgrading the commu...
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7.1.3.2.4 MCVideo emergency group communication cancel
Table 7.1.3.2.4-1 describes the information flow for the MCVideo emergency group communication cancel sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.4-1: MCVideo emergency group communication cancel Information Element Status Description MCVideo ID M The identity of the MCVideo user cancel...
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7.1.3.2.5 MCVideo upgrade to imminent peril group communication
Table 7.1.3.2.5-1 describes the information flow for the MCVideo upgrade to imminent peril sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.5-1: MCVideo upgrade to imminent peril group communication Information Element Status Description MCVideo ID M The identity of the MCVideo user upgradin...
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7.1.3.2.6 MCVideo imminent peril group communication cancel
Table 7.1.3.2.6-1 describes the information flow for MCVideo imminent peril group communication cancel sent from the MCVideo client to other MCVideo clients. Table 7.1.3.2.6-1: MCVideo imminent peril group communication cancel Information Element Status Description MCVideo ID M The identity of the MCVideo user c...
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7.1.3.2.7 MCVideo emergency alert announcement
Table 7.1.3.2.7-1 describes the information flow for the MCVideo emergency alert announcement sent from the MCVideo client to the other MCVideo clients, for the procedures defined in 3GPP TS 23.280 [6]. Table 7.1.3.2.7-1: MCVideo emergency alert announcement Information Element Status Description MCVideo ID M Th...
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7.1.3.2.8 MCVideo emergency alert cancel announcement
Table 7.1.3.2.8-1describes the information flow for the MCVideo emergency alert cancel sent from the MCVideo client to other MCVideo clients, for the procedures defined in 3GPP TS 23.280 [6]. Table 7.1.3.2.8-1: MCVideo emergency alert cancel announcement Information Element Status Description MCVideo ID M The id...
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7.1.3.3 Group communication setup
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7.1.3.3.1 General
A group communication setup is initiated by one member of a pre-configured MCVideo group and ends up with an established MCVideo group between multiple MCVideo clients ready for video sharing.
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7.1.3.3.2 Procedure
Figure 7.1.3.3.2-1 describes procedures to establish a MCVideo group communication with other MCVideo clients. Once the MCVideo group communication is established the MCVideo clients send Group communication announcement periodically. Pre-conditions: 1. Information for ProSe direct communications corresponding to t...
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7.1.3.4 Passive join to group communication