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Reliable data transmission system based on satellite network

A data transmission system and satellite network technology, applied in the field of real-time communication, can solve the problems of high data transmission cost, low quality and time extension, and achieve the effect of improving data transmission rate, reducing cost and improving efficiency

Active Publication Date: 2022-06-07
BEIJING FORTIS ASIA NEWS NETWORK TECH
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Problems solved by technology

[0012] For this reason, the present invention provides a reliable data transmission system based on the satellite network, in order to overcome the technical problems of high cost, low quality and time extension of data transmission under the satellite network in the prior art

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  • Reliable data transmission system based on satellite network

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specific Embodiment approach

[0096] Specifically, in the first data transmission process, the specific implementation manner of the data sending terminal performing timeout retransmission is as follows:

[0097] The first clock module set in the data sending terminal records the time t1 when the data sending module sends the first data information, and a second clock module is also set in the data receiving terminal, and the second clock module records that the data receiving module receives the second data information and the time t2 when the first ACK message is generated, the first transmission time of the first data information is Δt1=t2-t1;

[0098] The second clock module records the time t3 of the second ACK message, then the second transmission time of the first data information is Δt2=t3-t2;

[0099] The nth transmission time of the first data information is Δtn=tn+1-tn;

[0100] In the first clock module, set the standard timeout retransmission time as Tr0, set the actual data transmission inte...

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Abstract

The invention relates to a reliable data transmission system based on a satellite network, and mainly relates to the technical field of real-time communication, the reliable data transmission system comprises a data sending terminal and a data receiving terminal, the data sending terminal adopts a UDP protocol to send first data information outwards, the data receiving terminal receives second data information of the data sending terminal, and the second data information is sent to the data receiving terminal. In the process of receiving the data information, the packet loss management module determines packet loss information, and sends the ACK message generated by the data receiving module carrying the packet loss information to the data sending terminal; the data sending terminal sends a retransmission request to data information corresponding to the packet loss information; and when the congestion control module monitors that congestion occurs, a congestion control mechanism is started to reduce the data transmission time delay. The method has the beneficial effects that the data transmission cost is reduced, the data transmission completeness and the data transmission quality are improved, the situation that the concurrent bandwidth occupation is too high in the data transmission process is avoided, the data transmission rate is improved, and the time delay is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of real-time communication, in particular to a reliable data transmission system based on a satellite network. Background technique [0002] In the field of real-time communication, there is a triangular balance relationship: the constraints of cost, quality, and delay. That is to say, there is a triangular constraint (LEQ) relationship between the cost of input, the quality obtained and the delay of communication, so the designer of the real-time communication system will find a balance point under these three constraints. TCP (Transmission Control Protocol) is a communication method that guarantees quality by increasing delay and transmission cost, and UDP (User Datagram Protocol, datagram protocol) is a communication method that guarantees delay and cost by sacrificing quality. [0003] Since the satellite network is a low-bandwidth network and is prone to packet loss and delay, researchers have proposed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L5/00H04L69/164H04L1/18H04L47/12
CPCH04B7/18519H04L5/0055H04L69/164H04L1/1806H04L47/12Y02D30/70
Inventor 李东生杨培帧向仍湘张晓冰苑红晓彭博
Owner BEIJING FORTIS ASIA NEWS NETWORK TECH
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