Service data flow transmission method, communication apparatus, and communication system

A service data flow transmission method, comprising:

• obtaining, by an access network device, information indicating a generation time of a first data packet group and downlink transmission time window information of the first data packet group from one or more received data packets in the first data packet group of a first service data flow;
• determining, by the access network device, a remaining transmission time of the first data packet group based on the information indicating the generation time of the first data packet group and the downlink transmission time window information of the first data packet group;
• obtaining, by the access network device from one or more received data packets in a second data packet group of a second service data flow, information indicating a generation time of the second data packet group and downlink transmission time window information of the second data packet group;
• and
• determining, by the access network device, remaining transmission time of the second data packet group based on the information indicating the generation time of the second data packet group and the downlink transmission time window information of the second data packet group;
• determining, by the access network device, a scheduling priority of the first data packet group based on the remaining transmission time of the first data packet group and the remaining transmission time of the second data packet group;
• and
• sending, by the access network device, a data packet in the first data packet group to a terminal device based on the remaining transmission time of the first data packet group and the scheduling priority of the first data packet group.

A communication apparatus, comprising at least one processor coupled to at least one memory for storing instructions and configured to execute the instructions to cause the apparatus to:

• obtain, from one or more received data packets in a first data packet group of a first service data flow, an identifier of the first data packet group, information indicating a generation time of the first data packet group, quantity information of the first data packet group, and downlink transmission time window information of the first data packet group;
• obtain, from one or more received data packets in a second data packet group of a second service data flow, an identifier of the second data packet group, information indicating a generation time of the second data packet group, quantity information of the second data packet group, and downlink transmission time window information of the second data packet group;
• determine, a scheduling priority of the first data packet group based on the quantity information of the first data packet group, the quantity information of the second data packet group, the information indicating the generation time of the first data packet group, the information indicating the generation time of the second data packet group, the downlink transmission time window information of the first data packet group, and the downlink transmission time window information of the second data packet group;
• and
• send a data packet in the first data packet group to an access network device based on the scheduling priority of the first data packet group.

A communication apparatus, comprising at least one processor coupled to at least one memory for storing instructions and configured to execute the instructions to cause the apparatus to:

• obtain information indicating a generation time of a first data packet group and downlink transmission time window information of the first data packet group from one or more first received data packets in the first data packet group of a first service data flow;
• determine a remaining transmission time of the first data packet group based on the information indicating the generation time of the first data packet group and the downlink transmission time window information of the first data packet group;
• obtain, from one or more received second data packets in a second data packet group of a second service data flow, information indicating a generation time of the second data packet group and downlink transmission time window information of the second data packet group;
• and
• determine, remaining transmission time of the second data packet group based on the information indicating the generation time of the second data packet group and the downlink transmission time window information of the second data packet group;
• determine, a scheduling priority of the first data packet group based on the remaining transmission time of the first data packet group and the remaining transmission time of the second data packet group;
• and
• send a data packet in the first data packet group to a terminal device based on the remaining transmission time of the first data packet group and the scheduling priority of the first data packet group.