Satellite backward compensation system based on P2P technology

A satellite technology technology, applied in the field of satellite file transmission system, can solve the problem of high system cost

Inactive Publication Date: 2008-06-04
SHANGHAI KEJI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Backward compensation is to obtain the lost data from the ground server and its node servers, but the traditional backward compensation is based on the C-S mode, and a large number of data node servers need to be established to meet the needs of ground data transmission, which will cause the entire system to high cost

Method used

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  • Satellite backward compensation system based on P2P technology
  • Satellite backward compensation system based on P2P technology
  • Satellite backward compensation system based on P2P technology

Examples

Experimental program
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Embodiment Construction

[0022] 5.1 Satellite file transfer with sequential identification (satellite file transfer subsystem)

[0023] It is composed of central server + client, and is a one-to-many one-way transmission mode. The background is supported by a database, which records the file information to be sent by the center.

[0024] 5.1.1 System work flow chart

[0025] See attached drawing 3: the workflow diagram of satellite file transmission with sequential identification.

[0026] 5.1.2 Workflow

[0027] server side process

[0028] 1) The software of the satellite file sending center starts, reads the file sending status record, and automatically detects the sending status of the file.

[0029] If the file queue sent last time has not been completed, the last file queue information will be displayed, and the file information to be resumed will be indicated. If the last file queue has been completed, it will be displayed that the queue has been sent, and the administrator will add a new ...

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PUM

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Abstract

The invention relates to a satellite post-compensation system based on the P2P technology, which is a satellite file transfer system for which such technologies as the network communication (satellite network, Internet) technology, the Dot Net frame, the P2P technology, the file compensation algorithm, the data identification perfection, the addressing technology, etc. are utilized. The satellite network is utilized as a trunk transmission network to transmit the large-scale mass file data. By combining the advanced Dot Net frame and the P2P technology over the Internet, the defect calculation analysis and the compensation are applied to the file received through the satellite transmission so as to ensure that the unreliable satellite unidirectional file transfer is changed into the reliable integral file transfer. The traditional compensation solution is divided into the pre-compensation and the post-compensation. The pre-compensation means that a certain proportion of data is repeatedly transmitted through the satellite network, however, the pre-compensation reduces the efficiency of the satellite communication. In the post-compensation, the requirement for ground data transmission can be met only by establishing a large amount of data node servers, which cause the cost of the entire system to be excessively high. The invention breaks through the Internet transmission restriction applied to the traditional post-compensation and reduces the number of the ground data node servers so as to greatly lower the system cost and enhance the compensation speed of the ground network and the utilization ratio of the network resources, and constructs an effective post-compensation system for satellite file transfer with a lower cost.

Description

1. Technical field [0001] This patent relates to a satellite file transmission system that uses satellite communication technology and Internet communication technology to transmit resources (especially massive large-scale file resources), and implements error-free file resource transmission through the supplement of the Internet to the satellite network. 2. Background technology [0002] Due to the characteristics of satellite communication, data transmission by satellite may cause data loss. The traditional solution is to compensate and transmit satellite data, which is divided into forward compensation and backward compensation. Forward compensation is to repeatedly send a certain proportion of data through the satellite network, but it will reduce the efficiency of satellite communication. Backward compensation is to obtain the lost data from the ground server and its node servers, but the traditional backward compensation is based on the C-S mode, and it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/06H04B7/185
Inventor 龙浩陈杰邬晓东诸慧廉刘近哲
Owner SHANGHAI KEJI INFORMATION TECH
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