A Forward Retransmission Method Applicable to Network Coding Transmission Control Protocol

A technology of transmission control protocol and network coding, which is applied in the direction of using the return channel for error prevention/detection, etc., which can solve the problem of low retransmission efficiency and achieve the effect of improving the transmission throughput rate
CN107592185BInactive Publication Date: 2020-03-20SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2020-03-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a forward retransmission method applicable to the network coding transmission control protocol, comprising: the sending end numbers the coded message, and a number field Pid is attached to the head of the coded message; the sending end records each coded message The text is composed of several original messages. The receiving end needs to reply an ACK message for each encoded message received, and the field Pid‑reply is attached to the reply confirmation message; the sending end according to Pid‑reply, The network coding layer confirms the serial number and the original data packet information that composes the coded packet to indirectly know the message of link loss, and maintains a linked list of retransmitted messages; the network coding layer at the sending end receives the retransmitted message from the upper layer TCP When , start the forward retransmission mechanism to retransmit the messages in the retransmission linked list. The invention enables the network coding-based transmission control protocol to retransmit all lost messages within a round-trip time delay, and helps to improve the transmission throughput rate of the network-coding transmission control protocol.
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Description

technical field

[0001] The invention relates to the field of network transmission control protocols, in particular to a forward retransmission mechanism suitable for network coding transmission control protocols. Background technique

[0002] With the rapid popularization of mobile communication devices and the advent of the 4G era, various wireless network applications have gradually penetrated into all aspects of people's lives, and wireless networks are playing an increasingly important role. Therefore, how to improve the transmission quality of the wireless network has become a hot issue that has attracted much attention. Transmission Control Protocol (TCP) has become a basic transmission protocol under the Internet because of its ability to provide reliable transmission services.

[0003] In actual wireless network applications, the traditional TCP protocol is still used in the transport layer, but some unique characteristics of wireless networks have also caused serio...

Claims

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