Wireless communication apparatus and method for acknowledging received data

摘要

Provided are a wireless data communication apparatus and method capable of checking whether stations receive data from an access point and the states of the stations. The wireless data communication apparatus performs wireless data communications between an access point and at least one station, using a wireless transmission frame which includes an uplink period, a contention period, a receipt confirmation period, and a receiving state period. The receipt confirmation period is a period where a subcarrier channel set is activated when the station successfully receives data from the access point, and the receiving state period is a period where the subcarrier channel set is activated when the station can successfully receive data to be transmitted again from the access point.