| 摘要 |
PURPOSE: To reduce a retransmission due to an error of only a response signal by transmitting a response signal to a transmission station by a reception station plural number of times at different time and completing the transmission of the packet when even one ACK signal is received in the response signal by the transmission station. CONSTITUTION: When a radio station B receives the packet from a radio station A without an error, the station B transmits a packet reception notifying signal(ACK) as a response signal to the station A for every packet. When the station A receives the ACK of the packet, the station A completes the transmission, but when the station A does not receive ACK within prescribed time or receives a negative acknonledgement signal (NAK), the station A performs a retransmission to the station B. In this case, the station B transmits the ACK/ NAK of the same packet plural number of times at different time, and when the station A receives even one ACK from the response signal, the station A completes the transmission operation. Thus, the useless retransmission of the whole of the packet due to the error of only ACK/NAK is reduced and transmission efficiency is improved. |
