Block verification and acknowledgement-based satellite network TCP (Transmission Control Protocol) performance enhancement method

A satellite network and block technology, which is applied in the field of satellite communication systems, can solve the problems of reduced channel bandwidth utilization, waste of satellite channel bandwidth resources, and reduced available bandwidth, and achieve improved anti-error performance, low verification information overhead, The effect of improving transmission performance

Active Publication Date: 2014-10-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

Due to the high bit error characteristics of the satellite link, the error packet and packet loss in the satellite communication network are mainly caused by the channel error bit. When the error packet or packet loss is detected and the corresponding data packet is retransmitted, the link does not happen. Congestion does not reduce the available bandwidth. If the sending end reduces the sending rate, it will directly lead to a decrease in channel bandwidth utilization, resulting in a waste of precious satellite channel bandwidth resources.

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  • Block verification and acknowledgement-based satellite network TCP (Transmission Control Protocol) performance enhancement method
  • Block verification and acknowledgement-based satellite network TCP (Transmission Control Protocol) performance enhancement method
  • Block verification and acknowledgement-based satellite network TCP (Transmission Control Protocol) performance enhancement method

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Embodiment Construction

[0047] The following is attached figure 1 , 2 , 3, 4, 5, 6, 7 describe the preferred embodiments of the present invention, it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0048] figure 1 The application environment of the present invention is shown: based on the TCP performance enhancement agent, the satellite communication station adopts the method of converting the standard TCP protocol of the ground segment into the optimized TCP protocol based on the block verification and confirmation mechanism of the present invention in the space segment, Implement TCP protocol performance enhancement transparent to users.

[0049] figure 2 It is a block check option format diagram of the present invention. Among them, the first byte is the option number 66; the second byte is the option length, and the value range is 5 to 7; the third byte is ...

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Abstract

The invention discloses a block verification and acknowledgement-based satellite network TCP (Transmission Control Protocol) performance enhancement method, and relates to a TCP performance enhancement technology in a satellite communication field. According to the block verification and acknowledgement-based satellite network TCP performance enhancement method, the transmission performance of a TCP in a high error code environment is improved on the premise of not obviously increasing the cost of a TCP by utilizing expansion options of the TCP and introducing a new mechanism of data block verification and block acknowledgement based on ideas of combined transmission and block retransmission on the basis of the compatibility of basic mechanisms, such as TCP flow control, error control and congestion control. The method disclosed by the invention has the advantages of standard TCP compatibility, high error code resistance and low information verification cost, and is particularly suitable for a satellite communication system which performs data transmission by utilizing the TCP.

Description

technical field [0001] The invention discloses a satellite network TCP protocol performance enhancement method based on block verification and confirmation, relates to the TCP protocol performance enhancement technology in the satellite communication field, and is particularly suitable for satellite communication systems using the TCP protocol for data transmission. Background technique [0002] With the vigorous development of the terrestrial Internet based on the TCP / IP protocol family, the satellite communication network, which is the extension and backup of the terrestrial network, is rapidly evolving towards full IP. It has become the main protocol for satellite communication network to carry data services. [0003] However, the satellite channel is a relatively special wireless channel, which has inherent defects such as extended propagation time and high channel bit error. When the TCP protocol designed for the superior transmission environment of the ground wired net...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00
Inventor 彭华张亚生
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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