RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM, UPPER-LEVEL DEVICE, AND COMPUTER PROGRAM

PROBLEM TO BE SOLVED: To provide a radio communication method that makes it possible to shorten a transmission delay time in radio communication.SOLUTION: An access point acquires transmission right in a communication channel, and performs both of downlink radio communication from its own device to a terminal and uplink radio communication from the terminal to the own device at one transmission opportunity from acquisition of transmission right to release of the transmission right. Because both uplink communication and downlink communication are performed at one transmission opportunity, and there is no need to acquire transmission right again, a transmission delay time can be shortened and throughput can be improved due to increase in frequency resources available for communication.