Gateway used in satellite communication and method for enhancing TCP performance

A satellite communication and gateway technology, applied in the direction of network connection, radio transmission system, electrical components, etc., can solve the problems of low bandwidth utilization, TCP protocol transmission performance decline, etc., to improve the transmission rate, reduce technical and cost risks, improve Effects of Data Throughput and Link Utilization

Inactive Publication Date: 2015-04-15
NAT SPACE SCI CENT CAS
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Problems solved by technology

[0013] The object of the present invention is to, for overcoming the problem that the transmission performance of TCP agreement on the satellite communication link descends, the problem of bandwidth utilization rate is low, proposes a kind of gateway and its TCP performance enhancement method for satellite communication

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  • Gateway used in satellite communication and method for enhancing TCP performance
  • Gateway used in satellite communication and method for enhancing TCP performance
  • Gateway used in satellite communication and method for enhancing TCP performance

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0059] Reference principle figure 1 , the satellite communication link refers to the communication link between the ground station and the communication satellite (or space station); assuming that the terminal on the ground and the terminal in space are the first terminal and the second terminal respectively, the gateway connected to the first terminal and the The gateways connected to the second terminal are respectively the first gateway and the second gateway. Between the first terminal and the first gateway is the first transmission path. The transmission layer of this path adopts the TCP transmission protocol, which corresponds to the connection between the terminal and the gateway on the ground station or the terminal and the gateway on the communication satellite (or space station) in the actual working environment. The transmission path between...

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Abstract

The invention discloses a gateway used in satellite communication and a method for enhancing TCP performance. The method comprises the following step: dividing an entire transmission path between a terminal located on the ground and the terminal of cosmic space into several segments according to a transmission path characteristic, wherein a satellite communication link segment between the ground gateway and the space gateway in the several segments adopts an optimized TCP protocol and the rest segments adopt a TCP protocol; the optimized TCP protocol is any protocol which is suitable for transmitting data on the path with long delay, a high error rate and asymmetric bandwidth. The transmission path characteristic comprises a time-delay characteristic, an error code characteristic and a channel symmetry characteristic. According to the invention, based on the method, a satellite communication link between the ground gateway and the space gateway adopts a SCPS-TP protocol to establish TP connection, carry out TP data transmission and break the established TP connection. On two side of the gateway, the traditional TCP transmission protocol is continuously used. By using the gateway and the method of the invention, original equipment does not need to be modified and the TCP transmission protocol is completely compatible.

Description

technical field [0001] The invention relates to a method for enhancing the transmission performance of the TCP protocol in the technical field of satellite communication, is applicable to the TCP transmission service based on the satellite communication, and specifically relates to a gateway used in the satellite communication and a method for enhancing TCP performance thereof. Background technique [0002] As satellites play an increasingly important role in modern communication infrastructure, the combination of satellite networks and IP networks is the hottest development trend in the field of satellite communications today. However, due to the long delay, high bit error rate and bandwidth asymmetry of the satellite network, which are different from the terrestrial network, the TCP protocol used in the terrestrial network cannot be well used in the satellite network. How to improve the transmission performance of TCP in satellite communication has become an important hots...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/66H04L29/06H04B7/185
Inventor 卞春江张磊胡圣波陈宇孟新
Owner NAT SPACE SCI CENT CAS
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