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Fast transmission method of internet larger file

A technology for fast transmission and large files, applied in the field of network communication, can solve problems such as reducing transmission speed, decreasing transmission efficiency, and aggravating network congestion, so as to achieve the effect of increasing transmission speed

Inactive Publication Date: 2009-12-30
WUHAN UNIV
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] There are many forms of data transmission in the traditional Internet file transfer service at the application layer, such as FTP, HTTP, etc., but the TCP protocol is generally used at the transport layer, and the TCP protocol is a reliable connection. The price paid to ensure zero packet loss It is the decline of transmission efficiency; due to network congestion and flow control are not optimized, the retransmission load is increased after packet loss, which not only aggravates network congestion but also reduces transmission speed; TCP-based data transmission will bring considerable traffic to the terminal. big system overhead

Method used

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment:

[0029] The fast transmission method of Internet large file provided by the present invention specifically adopts the following technical scheme, below in conjunction with figure 1 Firstly, the working mechanism of the present invention will be described in detail.

[0030] The server-side file system 11 is the file system of the server 12, and the server-side file system 15 is the file system of the client 13. The client 13 provides a user interface to facilitate interaction with the user. The server 12 and the client 13 issue specific control commands A TCP connection 16 is established, and a UDP connection is further established during data transmission.

[0031] The present invention is different from the traditional FTP working mechanism, that is, FTP uses the TCP protocol for transmission on the two ports of control commands and data transmis...

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Abstract

The invention relates to the technical field of network communication, in particular to a fast transmission method of an internet larger file. In the invention, a server is connected with a client by TCP protocol, the transmission of the larger data file is carried out by UDP protocol, during transmission, network flow and congestion control mechanism are adopted to self-adaptively adjust the magnitude of data blocks and the transmission intervals among the data blocks so as to realize the maximization of throughput during transmission, and finally lost packet re-transmission mechanism is adopted to re-transmit the data packets lost during transmission. The invention has the characteristics of reliability of flexible use of TCP protocol and fastness of UDP protocol, and obvious enhancement of transmission speed of the large file in case of limit bandwidth.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for fast transmission of large Internet files. Background technique [0002] With the rapid development of the Internet, the demand for transmission and sharing of multimedia data in current network applications is increasing. Various file data must be able to quickly realize network sharing, and multimedia data usually has a large amount of data. With the continuous improvement of requirements, the data volume of video files has increased sharply, which makes the demand for effectively realizing large file transfer services more urgent. [0003] There are many forms of data transmission in the traditional Internet file transfer service at the application layer, such as FTP, HTTP, etc., but the TCP protocol is generally used at the transport layer, and the TCP protocol is a reliable connection. The price paid to ensure zero packet loss It is the decline of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/825
Inventor 艾浩军陈文琴李晓波王恒
Owner WUHAN UNIV
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