Transmission control protocol method for satellite network

A transmission control protocol and satellite network technology, applied in the field of computer network and satellite channel transmission, can solve problems such as inability to adapt to satellite networks, and achieve the effect of reducing the possibility of multiple packets being discarded

Inactive Publication Date: 2010-10-06
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] Technical problem: the purpose of the present invention is to provide a kind of TCP transmission control method for satellite network, thereby improve the throughput of satellite network for the

Method used

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  • Transmission control protocol method for satellite network
  • Transmission control protocol method for satellite network
  • Transmission control protocol method for satellite network

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0046] (1) Developers create a satellite network for data transmission according to requirements, and generate each node for data transmission;

[0047] (2) Developers decompose data transmission into each functional layer of the network to complete separately;

[0048] (3) The developers design the algorithm of the transmission control protocol of the transport layer according to the characteristics of the satellite network;

[0049] (4) The developer implements the specific algorithm of the transmission control protocol in each node of the transmission system.

[0050] The feature of the present invention is that it can be realized in the Linux operating system of open source code, and emulates and verifies in the NS2 network emulation software of open source code, and concrete method flow process is as follows:

[0051] Step (1) establish a connection

[0052] Enter the listening state and wait for the connection request from the sender. The sending end of the terrestria...

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Abstract

The invention discloses a transmission control protocol method for a satellite network, which is a control method for data transmission in a transport layer of the satellite network and is used for flow control and error control of transmission in the network so as to realize high-efficiency data transmission. The method is mainly used for improving congestion avoidance in congestion control through the following steps of: probing an optimal transmission window by dichotomous increase; and then differentiating a congestion error code by a prediction method for calculating the number of data packets being transmitted in the current network so as to effectively solve the problem of high error rate. Meanwhile, a selective acknowledgement (SACK) mechanism is adopted to only retransmit the discarded packets as much as possible when the packets are discarded so as to reduce the possibility of discarding a plurality of packets in primary window data transmitted at a high error rate and improve the utilization ratio of the network. The method can realize high-efficiency data transmission when used in the satellite network with high error rate and large time delay.

Description

technical field [0001] The invention belongs to the technical field of computer network and satellite channel transmission, and relates to a TCP (Transmission Control Protocol) transmission control method suitable for satellite network, which is mainly used to solve satellite communication data transmission, so as to improve the efficiency of data transmission, reduce system overhead and network Delay. Background technique [0002] With the rapid development of the Internet and the acceleration of information globalization, multimedia technology and communication technology have achieved tremendous development. At the same time, various new business requirements such as long-distance education, video conferencing, and telemedicine have put forward new requirements for the network, and the existing terrestrial network can no longer fully meet the needs of users. The interactive, high-speed, new generation satellite communication network combined with the Internet can solve t...

Claims

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Application Information

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IPC IPC(8): H04W80/06H04W84/06
Inventor 孙力娟谢锐肖甫郭剑叶晓国王汝传黄海平
Owner NANJING UNIV OF POSTS & TELECOMM
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