Multi-Band Transmission Method and Apparatus

A receive end, comprising:

• a transceiver is configured to:
• receive data packets in parallel from a transmit end using M frequency bands, wherein the data packets belong to a same traffic stream, and wherein M is an integer greater than 1;
• and
• receive a block acknowledgment request (BAR) frame from the transmit end, wherein the BAR carries a start sequence number (SSN) wherein the BAR requests a receiving state of a sent data packet that is from the transmit end on an mth frequency band, and wherein the mth frequency band is any frequency band in the M frequency bands;
• and
• a processor coupled to the transceiver and configured to:
• mark an mth state for an unreceived data packet whose sequence number (SN) is before the SSN;
• mark one or more unreceived data packets with a discarded state when determining that the one or more unreceived data packets are marked with a first state, a second state, . . . , and an Mth state;
• determine whether there is a first group of data packets with consecutive SNs, wherein any data packet in the first group of data packets is in a received state or the discarded state, and wherein a data packet that is with a minimum SN and that is in the first group of data packets is to be processed by the apparatus;
• and
• submit at least one data packet in the received state when determining that there is the first group of data packets,
• wherein the at least one data packet is in the first group of data packets with the consecutive SNs.

A computer program product comprising instructions stored on a non-transitory computer-readable medium that, when executed by a processor of a receive end, cause the receive end to implement a method comprising:

• receiving data packets in parallel from a transmit end using M frequency bands, wherein the data packets carried belong to a same traffic stream, and wherein M is an integer greater than 1;
• receiving a block acknowledgment request (BAR) frame from the transmit end, wherein the BAR carries a start sequence number (SSN), wherein the BAR requests a receiving state of a sent data packet that is from the transmit end on an mth frequency band, and wherein the mth frequency band is any frequency band in the M frequency bands;
• marking an mth state for an unreceived data packet whose sequence number (SN) is before the SSN;
• marking one or more unreceived data packets with a discarded state when determining that the one or more unreceived data packets are marked with a first state, a second state, . . . , and an Mth state;
• determining whether there is a first group of data packets with consecutive SNs, wherein any data packet in the first group of data packets is in a received state or the discarded state, and wherein a data packet that is with a minimum SN and that is in the first group of data packets to be processed by the receive end;
• and
• submitting, at least one data packet in the received state when determining that there is the first group of data packets,
• wherein the at least one data packet is in the first group of data packets with the consecutive SNs.