Study On Comprehensive Appraisement Model And Method Of Communicate Net Working Reliability

Communication is the essential factor of essential modern information social productivity and the important sign of measuring the country's comprehensive power, is the lifeline of information society. Communication network is the inevitable result of modern social needs and modern communication technical unceasing development, it is not only various information , various medium share to offer effective means, at the same time, have also raised communication quality. However ,as the other large scale complex systems in modern society, communication network scale is huge , has complex behavior, this has brought huge difficulty for communicating to net ananalysis and design.There is difference each especially scale, function and the structure of communication network, cause the maximum difficulty that described and analysed for network, Its reliability is easy , is managed by network equipment and network , networkmake rubbing rush at etc. influence, the reliability that causes communication net is hard to determine. Since people more and more care for the ability of network normal work, so, the reliability research of communication net has important meaning.This paper has first studied on the foundation of analysing and studying the property of communication net reliability and the factor that affects communication net reliability that the condition of communication net in work takes off the comprehensive index of appraisement , has given the communication index system of net working reliability comprehensive appraisement; Secondly have put forward the method that uses theory of evidence for communication net working reliability comprehensive appraisement index system in determine the nature to melt index carry out quantitative handling, establishing comprehensive appraisement model appraise , have solved the problem in the quantitative difficulty of index in the comprehensive appraisement course of communication net working reliability , and have verified validity and the feasibility of this method through example; The comprehensive assessment technique that, finally on the foundation of analysis communication net -work fault, has studied the communication net working reliability that estimated based on fault has given the index of service crack and the business working reliability of affecting two index appraisement indexes for communication net and has gone on , synthesize appraisement, and through example emulation, have shown validity and the feasibility of this method. This paper from determine the nature with by ration two aspects leave , estimate method using evidence theory and fault to make rubbing the broad communication research field and method of net working reliability comprehensive appraisement carry out is helpful for explore.