Multipath simultaneous transmission method in wide area backup protection

A wide-area backup protection and simultaneous transmission technology, which is applied in the field of multi-path simultaneous transmission in wide-area backup protection, can solve problems such as untimely switching of faulty paths, redundant alternative paths, and inability to make full use of coupling resources.

Inactive Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0005] The present invention provides a method for simultaneous multi-path transmission in wide-area backup protection, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of redundancy of alternative paths and SCTP standard existing in the information transmission process of the existing power communication network. Using single-path transmission, the coupling resources cannot be fully utilized, and the failure path switching is not timely.

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  • Multipath simultaneous transmission method in wide area backup protection
  • Multipath simultaneous transmission method in wide area backup protection
  • Multipath simultaneous transmission method in wide area backup protection

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Embodiment Construction

[0043] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0044] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0045] as attached figure 1 Shown, the method for multi-path simultaneous transmission in this wide-area backup protection is carried out according to the following steps:

[0046] Step 101, establishing no less than two paths between two communication sites;

[0047] Step 103: Predict the time delay and bandwidth of each path, compare the time delay and bandwidth of the alternative path with the time delay and bandwidth of the main path respectively, and obtain the path evaluation value. The evaluation formula is shown in formula 1,

[0048] (1)

[0049] in, for the path The path evaluation value of ,in P...

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Abstract

The invention relates to the electric power communication technical field and provides a multipath simultaneous transmission method in wide area backup protection. The multipath simultaneous transmission method comprises selecting an optimal path performance evaluation value of path from all paths and setting a path performance evaluation value as the formula; performing comparison on path performance evaluation values and the formula; performing path selection according to a path selection evaluation result and enabling data to be transmitted and switched to an optimal path set. According to the multipath simultaneous transmission method in the wide area backup protection, the path selection is performed according to SCTP (Stream Control Transmission Protocol) protocol characteristics to obtain the optimal path set, the paths are transmitted and switched to the optimal path set for multipath simultaneous transmission, and accordingly the coupling throughput can be improved, the average data transmission delay can be reduced, the data transmission delay fluctuation is small, and accordingly a foundation is laid for the implementation of seamless switching, the reliability of the wide area backup protection is ensured, and the utilization rate and the data transmission efficiency of coupling resources are improved.

Description

technical field [0001] The invention relates to the technical field of electric power communication, and relates to a multi-path simultaneous transmission method in wide-area backup protection. Background technique [0002] At present, the information transmission of wide-area backup protection is still based on the traditional transport layer protocol TCP (Transmission Control Protocol, Transmission Control Protocol) or UDP (User Datagram Protocol, User Datagram Protocol). Using TCP or UDP for data transmission can only establish a single path and cannot be switched. In this way, in the case of downed towers and disconnection accidents caused by extreme natural disasters, traditional transport layer protocols cannot perform automatic path switching, which affects the reliability of communication information transmission. [0003] SCTP (Stream Control Transmission Protocol, Stream Control Transmission Protocol) protocol is an emerging transport layer protocol, with many ne...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/709H04L12/725H04L45/243
Inventor 李凯马天福王涛运凯常春雷
Owner STATE GRID CORP OF CHINA
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