Patent ID: 7099300

Claim:
A radio transmission method for transmitting a packet from a radio transmission apparatus serving as an information transmitter to a radio transmission apparatus serving as an information receiver, returning acknowledgment of receipt for a received packet from said radio transmission apparatus serving as said information receiver to said radio transmission apparatus serving as said information transmitter after transmission of information, and retransmitting an unreceived packet from said radio transmission apparatus serving as said information transmitter to said radio transmission apparatus serving as said information receiver in a wireless network, said wireless network being formed with a plurality of transmission apparatus serving as communication stations, said radio transmission method comprising the steps of: at said radio transmission apparatus serving as said information transmitter, setting a predetermined transmission frame cycle; presetting a frame cycle for retransmission; and automatically retransmitting only a packet for which no acknowledgment of receipt has been received by the time said frame cycle arrives for retransmission, and wherein said frame cycle for retransmission is preset to a predetermined frame cycle depending on size of an asynchronous transmission area available for asynchronous transmission in a radio transmission line allowing one of band-reserved transmission and band-secured transmission.