The procedure is for providing a transmission control to MCVideo UE in an on-network case and applies for both private call and group call. Transmission control is performed by using transmission control information flows between the transmission control participant and the transmission control server.
When the transmission control server receives a transmit media request from the transmission control participant, it decides whether to give a grant or not. The result is informed to the requesting transmission control participant. When the transmission control participant receives a transmit media granted message, it can send video media over the uplink bearer established beforehand. The transmit media revoked message can be used as part of revoke. The transmit media queue status request can be used to know current position in the queue for media transmission.
Some transmission control information flows can also piggyback call control information flows to provide efficient call setup and clearing:
Call setup request is optionally carried in transmit media request (uplink); and
Call release request is optionally carried in media transmission release (uplink).
Table 7.7.1.2.2-1 describes the information flow transmit media request, from the transmission control participant to the transmission control server, which is used to request the transmit media request. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.3-1 describes the information flow transmit media granted, from the transmission control server to the transmission control participant, which is used to indicate that a transmit media request is granted and media transmission is possible. This information flow is sent in unicast (to the granted transmission control participant).
Table 7.7.1.2.4-1 describes the information flow transmit media rejected, from the transmission control server to the transmission control participant, which is used to indicate that a transmit media request is rejected. This information flow is sent in unicast (to the refused transmission control participant).
Table 7.7.1.2.5-1 describes the information flow media transmission notification, from the transmission control server to the transmission control participant, which is used to indicate that a media transmission is available from another user. This information flow is sent in unicast (to the receiving transmission control participant).
Table 7.7.1.2.6-1 describes the information flow receive media request, from the transmission control participant to the transmission control server, which is used to request the reception of the media from another user. This information flow is sent in unicast (to the transmission control server).
Table 7.7.1.2.7-1 describes the information flow receive media response, from the transmission control server to the transmission control participant, which is used to indicate whether the media reception is possible or not. This information flow is sent in unicast (to the receiving transmission control participant).
Table 7.7.1.2.8-1 describes the information flow media reception notification, from the transmission control server to the transmission control participant, which is used to indicate that a media reception has been initiated to a user. This information flow is sent in unicast (to the transmitting transmission control participant).
Table 7.7.1.2.9-1 describes the information flow queue position info, from the transmission control server to the transmission control participant, which is used to indicate that the transmit media request is queued and the queue position to the transmit media requesting UE. The MCVideo server and the MCVideo client support queuing of the transmit media requests shall support this information flow. This information flow is sent in unicast (to the queued transmission control participant).
Table 7.7.1.2.10-1 describes the information flow transmission revoked, from the transmission control server to the transmission control participant, which is used to indicate that the on-going video transmission is queued and the queue position is provided or the on-going video transmission is terminated. This information flow is sent in unicast (to the queued transmission control participant).
Table 7.7.1.2.11-1 describes the information flow queue position request, from the transmission control participant to the transmission control server, which is used to request the position in the video transmission queue. The MCVideo server and the MCVideo client support queuing of the transmission control requests shall support this information flow. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.12-1 describes the information flow transmit media cancel request, from the transmission control participant to the transmission control server. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.13-1 describes the information flow transmit media cancel response, from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.14-1 describes the information flow transmit media cancel request notify, from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.15-1 describes the information flow transmit media end request, from the transmission control participant to the transmission control server and from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server/transmission control participant.
Table 7.7.1.2.16-1 describes the information flow transmit media end response, from the transmission control participant and the transmission control server and from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server/transmission control participant.
Table 7.7.1.2.17-1 describes the information flow remote transmit media request, from the transmission control participant to the transmission control server. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.18-1 describes the information flow remote transmit media response, from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control participant.
Table 7.7.1.2.19-1 describes the information flow remote transmit media end request, from the transmission control participant to the transmission control server. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.20-1 describes the information flow transmit media end response, from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server.
Table 7.7.1.2.21-1 describes the information flow media reception end request, from the transmission control server to the transmission control participant and from the transmission control participant to the transmission control server.
Table 7.7.1.2.22-1 describes the information flow media reception end response, from the transmission control server to the transmission control participant and from the transmission control participant to the transmission control server.
Table 7.7.1.2.23-1 describes the information flow media reception override notification, from the transmission control server to the transmission control participant.
Table 7.7.1.2.24-1 describes the information flow transmit media end notify, from the transmission control server to the transmission control participant. This information flow is sent in unicast to the transmission control server.