Data transmission method

Abstract

The invention discloses a data transmission method, which comprises the following steps that a data sending end sends a data packet with a serial number; a data receiving end receives the data packetand feeds back all the received serial numbers of the data packets to the data sending end; the data sending end compares the sent serial numbers of the data packets with the serial numbers of the data packets fed back by the data receiving end so as to obtain the serial number of the data packet of packet loss; and the packet is retransmitted. According to the method, the data are divided into data packets according to a certain number of bytes through the data sending end, and the data packets are numbered; the data packets are sent to the data receiving end according to the serial number sequence of the data packets; the data receiving end feeds back the received serial numbers of the data packets to the data sending end; and the data sending end judges the packet loss condition according to the serial numbers of the data packets fed back by the data receiving end and retransmits the data of the packet loss, so that data retransmission is triggered without depending on an accumulated confirmation of a plurality of DACKs or an ACK timeout timer, and the data transmission speed, the stability, the real-time performance and the success rate are greatly improved.

Description

technical field [0001] The present invention relates to the technical field of data transmission, and in particular, to a data transmission method. Background technique [0002] The traditional TCP-IP protocol uses the transmission message sequence as both the byte count of transmission and the confirmation of reliable transmission. This method relies on the cumulative confirmation of multiple DACKs or the ACK timeout timer to trigger data retransmission. At the same time, the client The process of data transmission between the client and the server is faced with a very complex network environment. For example, data is easily affected by network congestion and packet loss during network transmission, especially during long-distance transmission, which leads to the communication between the client and the server. The data transmission speed is slow, not stable enough, the real-time performance is poor, and the success rate is not high. [0003] Therefore, the prior art has s...

AI Technical Summary

Problems solved by technology

[0002] The traditional TCP-IP protocol uses the transmission packet sequence as both the byte count of transmission and the confirmation mark of reliable transmission. This method relies on the cumulative confirmation of multiple DACKs or the ACK timeout timer to trigger data retransmission. At the same time, the client The process of data transmission between the terminal and the server is faced with a very complex network environment. For example, data is prone to network congestion and packet loss during network transmission, especially during long-distance transmission. The data transmission speed is slow, not stable enough, the real-time performance is poor, and the success rate is not high

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