Trigger based null data packet transmission method and related apparatus

A trigger based null data packet transmission method, comprising:

• sending, by an access point, a null data packet feedback report poll (NFRP) trigger frame, wherein the NFRP trigger frame comprises highly efficient (HE) modulation bandwidth indication information and extremely high-throughput (EHT) modulation bandwidth indication information, the HE modulation bandwidth indication information indicates an HE modulation bandwidth, the EHT modulation bandwidth indication information indicates an EHT modulation bandwidth, the NFRP trigger frame further comprises a first user information field, the first user information field is the 1st user information field following a common information field of the NFRP trigger frame, and the first user information field is used to schedule a first-type station to send a highly efficient trigger based null data packet (HE TB NDP) in the HE modulation bandwidth, and send an extremely high-throughput trigger based null data packet (EHT TB NDP) in the EHT modulation bandwidth;
• and
• receiving, by the access point in the EHT modulation bandwidth, the EHT TB NDP from a first station in the first-type station;
• or receiving, by the access point in the HE modulation bandwidth, the HE TB NDP from a first station.

A communication apparatus, applied to a first-type station, comprising:

• a processor and a transceiver, wherein the transceiver is configured to cooperate with the processor to receive and send a null data packet feedback report poll (NFRP) trigger frame and a null data packet (NDP), and the processor is configured to run program instructions, to enable the communication apparatus to perform a method including:
• receiving, the NFRP trigger frame, wherein the NFRP trigger frame comprises highly efficient (HE) modulation bandwidth indication information and extremely high-throughput (EHT) modulation bandwidth indication information, the HE modulation bandwidth indication information indicates an HE modulation bandwidth, the EHT modulation bandwidth indication information indicates an EHT modulation bandwidth, the NFRP trigger frame further comprises a first user information field, the first user information field is the 1st user information field following a common information field of the NFRP trigger frame, and the first user information field is used to schedule the first-type station to send a highly efficient trigger based null data packet (HE TB NDP) in the HE modulation bandwidth, and send an extremely high-throughput trigger based null data packet (EHT TB NDP) in the EHT modulation bandwidth;
• and
• sending, the EHT TB NDP in response to a resource for scheduling the first station by the NFRP trigger frame being in the EHT modulation bandwidth;
• or
• sending, the HE TB NDP in response to if-a resource for scheduling the first station by the NFRP trigger frame being in the HE modulation bandwidth.