2 A SYSTEM FOR TRANSFERRING DATA RELIABLY BETWEEN AT LEAST TWO STATIONS INTERCONNECTED VIA A RADIO INFORMATION TRANSMISSION NETWORK

摘要

PURPOSE: A data transferring system is provide to transfer data between at least two stations mutually connected through a radio information transmission network. CONSTITUTION: A transmitting station(1) transfers data in the form of a frame containing suitability verification information for verifying the suitability of the frame. A receiving station(2) is provided with a means for receiving the data and confirming the frame on the basis of corresponding suitability verification information. In such a system, on the basis of the result confirming the frame transmitted to the transmitting station(1), the receiving station(2) transmits a reception confirm signal ACK showing the reception of the effective frame or reception confirm signal NACK showing the reception of ineffective frame and a start means is provided for starting sending the data frame again when transmitting station(1) receives NACK or receives no reception confirm signal showing the reception of the frame each time a predetermined period T1 ends.