| 摘要 |
PURPOSE: A sliding window method with an improved transmission speed is provided to efficiently decrease a time required for data transmission by successively transmitting a lost packet and a next packet by a window size in case that the lost packet exists among packets of a transmission window. CONSTITUTION: Data such as a transmitting message or file are segmented as a packet(P21-P25) type, and the segmented data are successively transmitted as a window(W31) with a uniform size according to the data process capacity of a transmission side(60) and a receipt side(61). If the successively transmitted packets(P21-P23) are transmitted to the receipt side(61), the receipt side(61) transmits transmission acknowledge codes stored in headers of the transmitted packets(P21-P23) to the transmission side(60) through a network(62) for confirming that the packets(P21-P23) are transmitted. The packets(P21-P23) successively transmitted by the window size are compared with the transmission acknowledge codes received in the transmission side(60) for judging whether a loss packet exists. If the packets(P21-P23) are identical to the transmission acknowledge codes, next packets are successively transmitted by the window size. If the packets(P21-P23) are not identical to the transmission acknowledge codes, the loss packet(P22) is confirmed through the transmission acknowledge codes and the loss packet(P22) and the next packets(P24,P25) are successively transmitted by a window(W32) size. |
