Document transmission method based on unidirection link

A file transmission and one-way link technology, applied in the field of communication and broadcasting, can solve the problem that there is no good solution for file transmission, and achieve the effect of convenient and fast reception and meeting the needs of users

Inactive Publication Date: 2009-06-24
ACAD OF BROADCASTING SCI SARFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for a one-way transmission network, such as a broadcast network, where the same file is transmitted to multiple users, there is currently no good solution for file transmission

Method used

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  • Document transmission method based on unidirection link
  • Document transmission method based on unidirection link
  • Document transmission method based on unidirection link

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] First, define the data service as consisting of several files, the files can be in the same directory or in different directories, and the directory structure can be divided into multiple layers. The present invention uses a File Attribute Table (FAT for short) to describe the file composition, file attributes, and transmission segmentation parameter information of the data service. The specific implementation may use the extensible markup language (The Extensible Markup Language, abbreviated as XML) syntax to describe the file attribute table, and the file attribute table itself also forms a file. Before the file sending channel is established, the present invention first generates the FAT file. The terminal first receives and parses the FAT file, and locally restores the same file and directory structure as the source according to the...

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Abstract

The invention discloses a file transfer method based on unidirectional links, which is used to transfer a file to a plurality of users in a unidirectional transmission network. The method takes a file attribute table to describe the file composition, the file attribute and the transfer segmentation parameters of the data traffic and partitions the file to be transferred into data patches at equal length, and if the last data patch is not long enough, the last patch can be supplemented through 0x00; then the file patches are packed into data patch packets according to a data patch encapsulation grammar, and a data block is checked to form a parity block which closely follows the data block; and then the parity block is partitioned into pieces which are then packed into parity piece packets which are transferred closely following the corresponding data patch packets. A terminal first receives and analyzes the file attribute table and then completely restores a file and a catalogue structure consistent with the originating terminal at home according to the information indicated by the file attribute table. The method simply and effectively realizes the transmission and reception of the file in the unidirectional transmission network and the users can conveniently and quickly receive the file data traffic, thus greatly satisfying the requirements of the users.

Description

technical field [0001] The invention belongs to the technical field of communication and broadcasting, and in particular relates to a method for file segmentation, encapsulation and transmission based on unidirectional link transmission. Background technique [0002] With the rapid development of communication technology and digital technology, users' demands for information resource acquisition and sharing are becoming more and more urgent and diverse. As an important carrier of information, various files, how to transmit them quickly and effectively in the network is an important issue before us. [0003] At present, there are many ways to transfer files over the network, such as the more commonly used File Transfer Protocol (FTP) service, which works in the seventh layer of the Open System Interconnection model (OSI model). Layer, on the fourth layer of the Transmission Control Protocol model (Transmission Control Protocol, TCP model for short), that is, the application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04H60/82H04L47/43
Inventor 解伟陈德林张定京赵良福王颖
Owner ACAD OF BROADCASTING SCI SARFT
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