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Network data concast transmission method based on distributed coding storage

A technology of distributed coding and network data, applied in the field of network data transmission, can solve the problems of reducing data transmission efficiency, limited user terminal capabilities, waste of network bandwidth, etc. Effect

Inactive Publication Date: 2007-01-31
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the P2P method has two main disadvantages: 1. The capacity of the user terminal is limited
Since the terminals that provide data download services do not know each other's existence and the storage of each other's data, users will receive the same data block from different peer users, thereby wasting network bandwidth and reducing data transmission. efficiency

Method used

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  • Network data concast transmission method based on distributed coding storage
  • Network data concast transmission method based on distributed coding storage
  • Network data concast transmission method based on distributed coding storage

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Embodiment Construction

[0034] The network data assembly transmission method based on distributed encoding storage proposed by the present invention firstly stores the encoded data and encoding information on multiple servers in the network respectively; the client sends a request for data transmission to the above-mentioned multiple servers through the network ; After the above-mentioned multiple servers receive the data sending request from the client, they send confirmation information and encoding information to the client respectively, and pack the above-mentioned encoded data and send it to the client according to the specified route; after the client receives the above confirmation information , obtain the number N of data packets that need to be received from the above-mentioned encoding information; the client receives a total of the above-mentioned N data packets from the above-mentioned multiple servers, and decodes them. If the decoding is successful, it sends a termination request to the s...

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Abstract

The invention relates to a distributed code storage-based network data centralized-broadcasting transmitting method, belonging to data transmission technical field, comprising: firstly storing coded data and coding information in plural servers; a user end sends request through network to plural servers; the servers receive data transmission request from the user end and sends confirm and coding information to the user end and packets the coded data and sends data packets to the user end; the user end receives the confirm information and obtains the number of data packets to be received from the coding information and receives the data packets from the servers and decodes them. And its advantages: providing downloading service by powerful servers, assuring relative stability of data service; making distributed data storage and implementing data centralized-broadcasting downloading, raising downloading rate; randomly coding data, saving network bandwidth and improving network survivability.

Description

technical field [0001] The invention relates to a network data assembling and broadcasting transmission method based on distributed encoding and storage, and belongs to the technical field of network data transmission. Background technique [0002] Existing network transmission methods include network unicast, multicast and broadcast. Unicast refers to a method in which a server in the network transmits data to a user terminal by establishing a network link, and is the most basic data transmission method in the network. When multiple users need to obtain the same data, it is very inefficient to establish multiple independent unicast transmission links between the server and users for data transmission, because it will repeatedly send the same data many times, reducing the network bandwidth utilization rate. Multicast is a transmission method in which a server transmits the same data to multiple user terminals at the same time. This method improves the utilization rate of n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18G06F17/30H03M7/26H04L29/06
Inventor 张超朱宏杰陶晓明陆建华
Owner TSINGHUA UNIV
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