Media downlink transmission control method and related device

1. A method, comprising:

determining, by a media server, a first media stream to be sent to a destination terminal;

in response to a quantity of media streams currently received by the destination terminal reaching a media stream quantity threshold corresponding to the destination terminal when the first media stream is determined to be sent to the destination terminal, sending, by the media server, a media reception invitation message to the destination terminal, wherein the media reception invitation message carries a media stream identifier of the first media stream;

receiving, by the media server, a media reception end request message from the destination terminal based on the media reception invitation message, wherein the media reception end request message carries a media stream identifier of a second media stream; and

stopping sending, by the media server, the second media stream to the destination terminal.

2. The method according to claim 1 , further comprising:

before stopping sending the second media stream to the destination terminal, sending a media reception preemption message to the destination terminal, wherein the media reception preemption message carries identification information of the first media stream and identification information of the second media stream, and the media reception preemption message notifies the destination terminal that a transmission resource of the second media stream will be used to transmit the first media stream.

3. The method according to claim 1 , further comprising:

determining, based on the media reception end request message, the second media stream from the media streams.

4. The method according to claim 1 , further comprising:

after stopping sending the second media stream to the destination terminal, when it is detected that the quantity of the media streams currently received by the destination terminal is less than the threshold of the quantity of the media streams corresponding to the destination terminal, starting re-sending the second media stream to the destination terminal.

5. The method according to claim 4 , further comprising:

before starting re-sending the second media stream to the destination terminal, receiving a media transmission restart message from the destination terminal.

6. The method according to claim 5 , wherein the media transmission restart message carries a media stream identifier of the second media stream, and the media transmission restart message requests to start transmitting the second media stream.

7. A media server, comprising:

a processor; and

a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:

determine a first media stream to be sent to a destination terminal

in response to a quantity of media streams currently received by the destination terminal reaching a media stream quantity threshold corresponding to the destination terminal when the first media stream is determined to be sent to the destination terminal, send a media reception invitation message to the destination terminal, wherein the media reception invitation message carries a media stream identifier of the first media stream;

receive a media reception end request message from the destination terminal based on the media reception invitation message, wherein the media reception end request message carries a media stream identifier of a second media stream; and

stop sending the second media stream to the destination terminal.

8. The media server according to claim 7 , wherein the program further includes instructions to:

send a media reception preemption message to the destination terminal, wherein the media reception preemption message carries identification information of the first media stream and identification information of the second media stream, and the media reception preemption message notifies the destination terminal that a transmission resource of the second media stream will be used to transmit the first media stream.

9. The media server according to claim 7 , wherein the program further includes instructions to:

determine, based on the media reception end request message, the second media stream from the media streams.

10. The media server according to claim 7 , wherein the program further includes instructions to:

after stopping sending the second media stream to the destination terminal, when it is detected that the quantity of the media streams currently received by the destination terminal is less than the media stream quantity threshold corresponding to the destination terminal, start re-sending the second media stream to the destination terminal.

11. The media server according to claim 10 , wherein the program further includes instructions to:

receive a media transmission restart message from the destination terminal; and

trigger, based on the media transmission restart message, start re-sending the second media stream to the destination terminal.

12. The media server according to claim 11 , wherein the media transmission restart message carries a media stream identifier of the second media stream, and the media transmission restart message requests to start transmitting the second media stream.

13. A method, comprising:

receiving, by a terminal, a media reception invitation message from a media server, wherein the media reception invitation message carries a media stream identifier of a first media stream to be sent to the terminal from the media server;

determining, by the terminal, a second media stream to be preempted in response to a quantity of media streams received by a destination terminal reaching a media stream quantity threshold; and

sending, by the terminal, a media reception end request message to the media server, wherein the media reception end request message carries a media stream identifier of the second media stream.

14. The method according to claim 13 , further comprising:

sending, by the terminal, a media transmission restart message to the media server.

15. The method according to claim 14 , wherein the media transmission restart message carries a media stream identifier of the second media stream, and the media transmission restart message requests to start transmitting the second media stream.

16. A terminal, comprising:

a processor; and

a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:

receive a media reception invitation message from a media server, wherein the media reception invitation message carries a media stream identifier of a first media stream to be sent to the terminal from the media server;

determine a second media stream to be preempted in response to a quantity of media streams received by a destination terminal reaching a media stream quantity threshold; and

send a media reception end request message to the media server, wherein the media reception end request message carries a media stream identifier of the second media stream.

17. The terminal according to claim 16 , wherein the program further includes instructions to:

send a media transmission restart message to the media server.

18. The terminal according to claim 17 , wherein the media transmission restart message carries a media stream identifier of the second media stream, and the media transmission restart message requests to start transmitting the second media stream.