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
CN102739569BInactive Publication Date: 2015-04-15NAT SPACE SCI CENT CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT SPACE SCI CENT CAS
Publication Date
2015-04-15
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Claims

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