Transmission control method based on random linear network coding

A network coding, random linear technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as application limitations, achieve fast coding speed, high accuracy, and improve throughput

Inactive Publication Date: 2015-06-03
XIDIAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the application of TCP in high bit error rate networks such as wireless networks is limited.

Method used

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  • Transmission control method based on random linear network coding
  • Transmission control method based on random linear network coding
  • Transmission control method based on random linear network coding

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Experimental program
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Embodiment Construction

[0020] The present invention is described in detail below with reference to accompanying drawing:

[0021] refer to figure 1 , the present invention is based on the transmission control method of random linear network coding, comprises the following steps:

[0022] Step 1: adding a network coding NC layer between the Transmission Control Protocol TCP layer and the Internet Protocol IP layer at the sending end and the receiving end.

[0023] Step 2: The network coding NC layer at the sending end performs group random linear network coding on the data packets of the transmission control protocol TCP, and sends them to the Internet Protocol IP layer at the local end.

[0024] refer to figure 2 , the specific implementation of this step is as follows:

[0025] 2a) The sender caches the data packets arriving at the network coding NC layer from the transmission control protocol TCP layer. When the number of data packets in the buffer area reaches N, set the N data as a group, an...

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Abstract

The invention discloses a transmission control method based on random linear network coding and mainly solves the problems of large time delay of a transmission control protocol (TCP) under a high-bit error rate link and decrease of throughput. The transmission control method comprises the following realization steps: (1) adding network coding (NC) layers between a transmission control protocol layer and an internet protocol (IP) layer which are respectively at the transmitting end and the receiving end; (2) performing grouping random linear network coding on data packets of the transmission control protocol through the network coding layer at the transmitting end and transmitting to the internet protocol layer at the local end; (3) receiving the coded data packets from the internet protocol layer at the local end through the network coding layer at the receiving end, wherein the data packets are subjected to response and grouping decoding in sequence and are submitted to the transmission control protocol layer. According to the transmission control method, the network throughout capacity under the high-bit error rate link is effectively improved, and the effect of round-trip delay of the link on the transmission control protocol performance is reduced.

Description

technical field [0001] The invention belongs to the field of multimedia information transmission, and in particular relates to an improved transmission control protocol TCP, which can be used to improve the throughput of the network under the high error rate link. Background technique [0002] TCP is a connection-oriented transport layer communication protocol that provides reliable byte stream services. It can ensure the correct transmission of data and has high throughput when the link is reliable, so it is widely used in the transmission of network data such as file transfer protocol FTP and hypertext transfer protocol HTTP. However, because TCP has a control mechanism for network data flow, its application in high bit error rate networks is limited. TCP's network data flow control mechanism mainly includes flow control and congestion control. Flow control refers to controlling the data transmission interval of the sender through a sliding window to prevent data loss ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/06
Inventor 肖嵩翟丰泰权磊王梦丝杜建超刘学文
Owner XIDIAN UNIV
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