Wireless communication method and wireless communication system requiring acknowledgement frame from receiving side

摘要

In the invention, wireless communication devices transmit beacon frames in an order in compliance with a CSMA/CA protocol. A wireless communication device as a transmitting station of a multicast frame uses one of the beacon frames to notify wireless communication devices as receiving stations of the multicast frame that an ACK frame is to be transmitted when the multicast frame is received. On receipt of the multicast frame, the wireless communication devices as the receiving stations transmit ACK frames in order of transmitting the beacon frames at SIFS intervals.

主权项

1. A wireless communication method with which a wireless communication device on a transmitting side transmits a multicast frame to a plurality of wireless communication devices on a receiving side in a wireless communication network including a plurality of wireless communication devices, the wireless communication method comprising:
(a) transmitting a beacon frame by the wireless communication device on the transmitting side, wherein the wireless communication device on the transmitting side requests, using the beacon frame, the wireless communication devices on the receiving side to transmit an acknowledgment frame; (b) receiving, from each receiving side device amongst the plurality of wireless communication devices in sequence, a beacon frame transmitted by the receiving side device; (c) transmitting the multicast frame by the wireless communication device on the transmitting side; and (d) receiving by the wireless communication device on the transmitting side acknowledgment frames transmitted by respective receiving-side devices, amongst the wireless communication devices on the receiving side, that receive the multicast frame, in an order that the beacon frame was received by the receiving side devices, the acknowledgement frames having been transmitted from the receiving-side devices a predetermined interval after an end of the multicast frame and with the predetermined interval between adjacent acknowledgement frames.