Data transmission method, apparatus, and device in Wi-Fi network

A communications apparatus, comprising:

• a first transceiver;
• a second transceiver;
• a processor coupled to the first transceiver and the second transceiver and configured to:
• receive a first uplink packet that carries uplink 5-tuple information, wherein the uplink 5-tuple information comprises an uplink source Internet Protocol (IP) address, an uplink destination IP address, an uplink source port, an uplink destination port, and an uplink transmission protocol type;
• receive a first downlink packet, wherein the first downlink packet carries downlink 5-tuple information, and wherein the downlink 5-tuple information comprises a downlink source IP address, a downlink destination IP address, a downlink source port, a downlink destination port, and a downlink transmission protocol type;
• determine whether a service type of the first uplink packet is a preset service type;
• preferably forward the first downlink packet based on a real-time transmission indication when the service type of the first uplink packet is the preset service type and when the downlink 5-tuple information matches the uplink 5-tuple information;
• and
• not preferably forward a second downlink packet that corresponds to the downlink 5-tuple information and is not received within a specified time period,
• wherein the service type is the preset service type when the first uplink packet meets at least one of the following conditions:
• the uplink destination IP address provides a real-time transmission service, the uplink destination port provides the real-time transmission service, the uplink transmission protocol type is used for the real-time transmission service, a bandwidth of the first uplink packet is less than an uplink bandwidth threshold, or a packet length of the first uplink packet is less than an uplink packet length threshold.

A computer program product comprising computer-executable instructions stored on a non-transitory computer-readable medium that, when executed by a processor, cause a communications apparatus to:

• receive an uplink packet that carries uplink 5-tuple information, wherein the uplink 5-tuple information comprises an uplink source Internet Protocol (IP) address, an uplink destination IP address, an uplink source port, an uplink destination port, and an uplink transmission protocol type;
• receive a downlink packet, wherein the downlink packet carries downlink 5-tuple information, and wherein the downlink 5-tuple information comprises a downlink source IP address, a downlink destination IP address, a downlink source port, a downlink destination port, and a downlink transmission protocol type;
• determine whether a service type of the uplink packet is a preset service type;
• preferably forward the downlink packet based on a real-time transmission indication when the service type of the uplink packet is the preset service type and when the downlink 5-tuple information matches the uplink 5-tuple information;
• and
• not preferably forward a second downlink packet that corresponds to the downlink 5-tuple information and is not received within a specified time period,
• wherein the service type is the preset service type when the uplink destination IP address is configured to provide a real-time transmission service, the uplink destination port provides the real-time transmission service, the uplink transmission protocol type is used for the real-time transmission service, a bandwidth of the uplink packet is less than an uplink bandwidth threshold, or a packet length of the uplink packet is less than an uplink packet length threshold.