MCVideo server can determine to use 5G MBS for the transmission of DL link media for different types of MCVideo group calls.
The application layer signalling such as the transmit media request and transmit media granted messages, may be transmitted along with the MC media over the same MBS session however with different QoS requirements, or over other means such as unicast downlink or a different MBS session.
When using the procedures for pre-configured or dynamic MBS session establishment for MCVideo, the MCVideo server perform the procedure of call connect and disconnect over MBS session.
The MCVideo service shall support the procedure for using MBS sessions as specified
clause 7.3.3.1 with the following clarifications:
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The MC service client is the MCVideo client;
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The MC service server is the MCVideo server; and
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The MC service ID is the MCVideo ID.
The MCVideo service shall use the MCVideo-1, MCVideo-8 and MCVideo-9 reference points for this procedure.
The MCVideo service shall support the procedure for switching between 5G MBS session, 5G unicast PDU session, LTE eMBMS bearer and LTE unicast bearer as specified in
clause 7.3.3.8 and
clause 7.3.3.9 with the following clarifications:
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The MC service client is the MCVideo client;
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The MC service server is the MCVideo server; and
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The MC service ID is the MCVideo ID.
The MCVideo service shall use the MCVideo-1, MCVideo-4, MCVideo-7, MCVideo-8 and MCVideo-9 reference points for this procedure.
The MCViedo service shall support the procedure for using pre-created MBS session, or dynamic MBS session as specified
clause 7.3.3.1.
MCVideo may use pre-created MBS session for the different types of MCVideo group calls. Both pre-arranged group calls and chat group calls can use the pre-created MBS session for distributing the media. The MBS session can be used by any group.
When using the pre-created MBS session for MCVideo, the MCVideo server may perform the procedure of call connect and disconnect over MBS as defined in
clause 7.3.3.11.2 for the group communication session establishment step, or send map group communication to MBS session as defined in
clause 7.3.2.4 after group communication session establishment.
MCVideo may also use dynamic MBS session for the different types of MCVideo group calls. Both pre-arranged group calls and chat group calls can use the dynamic MBS session for distributing the media.
When using the procedures for dynamic MBS session establishment for MCVideo, the MCVideo server perform the procedure of triggering MBS session configuration as defined in
clause 7.3.3.1 and mapping group communication to MBS session as defined in defined in
clause 7.3.2.4 at the group communication session establishment step.
Both the media packets as well as the transmission control messages to the receiving MCVideo clients are sent on the MBS session. Optionally a separate MBS session could be used for the transmission control messages.