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A sctp main path automatic switching method

An automatic switching, main path technology, applied in the field of communication, can solve the problem of low resource utilization, not comprehensively considering the performance of the main path and the performance of the alternate path, etc., to achieve the effect of improving data transmission efficiency and coupling reliability

Active Publication Date: 2015-09-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology

[0007] The purpose of the present invention is to propose a new SCTP main path automatic switching method for the problem that the commonly used SCTP main path automatic switching method does not comprehensively consider the main path performance and the alternative path performance, resulting in low resource utilization in the transmission process , to solve the above problems

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  • A sctp main path automatic switching method
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  • A sctp main path automatic switching method

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[0030] The preferred embodiments are described in detail below in conjunction with the drawings. It should be emphasized that the following description is only exemplary, and is not intended to limit the scope of the present invention and its application.

[0031] figure 1 It is a flowchart of the SCTP main path automatic switching method. figure 1 Among them, the method provided by the present invention includes:

[0032] Step 1: Initialize the parameters.

[0033] First set the initial delay value RTT of the main path pri,init , Bandwidth initial value B pri,init And initial value of packet loss rate L pri,init .

[0034] Secondly, for the convenience of description, this embodiment assumes that there are only two candidate paths, namely, candidate path 1 and candidate path 2, respectively. Set the initial delay value of alternative path 1 Bandwidth initial value And initial value of packet loss rate Set the initial delay value of alternative path 2 Bandwidth initial value...

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Abstract

The invention discloses an automatic switching method for an SCTP (stream control transmission protocol) main path in the technical field of communication. The method comprises the following steps of: initializing parameters; forecasting the time delay of the main path and each alternative path according to the initialized parameters; computing and forecasting the bandwidth and the packet loss of the main path and each alternative path; computing the comprehensive performance evaluation value of each alternative path; respectively comparing the comprehensive performance evaluation value of each alternative path with the comprehensive performance evaluation threshold value of the path, if the comprehensive performance evaluation value of each alternative path is less than or equal to the comprehensive performance evaluation threshold value of the path, selecting the alternative path with the minimum comprehensive performance evaluation value to replace the main path in the alternative path of which the comprehensive performance evaluation value is less than or equal to the comprehensive performance evaluation threshold value of the path, and automatically switching the main path; and finally, carrying out congestion control and / or retransmission avoidance. According to the method, the main path can be automatically switched according to the comprehensive performance evaluation threshold value of the path, so that the data transmission efficiency and the coupling reliability can be improved.

Description

Technical field [0001] The invention belongs to the field of communication technology, and in particular relates to an automatic switching method for an SCTP main path. Background technique [0002] SCTP (STREAM CONTROL TRANSMISSION PROTOCOL, Stream Control Transmission Protocol) has the characteristics of multi-homing. Multiple path connections are established in a coupling. One of them is selected as the main path for data transmission, and the other paths are used as backup redundancy. When the main path fails, SCTP selects an alternative path to replace the original main path and become the new main path. This mechanism is called SCTP main path automatic switching. When the main path fails, the automatic switching of the main path can improve the data transmission efficiency to a certain extent and improve the reliability of coupling. [0003] However, since in standard SCTP, the automatic switching of the main path is only performed when the main path fails, even if the perfo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L45/28
Inventor 李国栋刘琳魏振华李凯尹军尼加提·纳吉米周文婷王晓磊尹蕊李国粹靳鹏飞罗晗宋自立仇珏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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