基于QoS要求的QoS估计方法  

Method for QoS Estimation Based on QoS Requirement

作　　者：李勇军[1] 李建华[1] 王美云[2] 

机构地区：[1]中南大学信息科学与工程学院,长沙410075 [2]中南大学交通运输工程学院,长沙410075

出　　处：《计算机工程》2008年第16期66-68,共3页Computer Engineering

摘　　要：分析目前服务质量(QoS)及其估计的现状和问题,从灵活性和准确性的角度出发,给出QoS参考矩阵及一个服务质量模型,包括服务时间、服务代价、完整性、可用性、信誉等5个QoS特性。在该模型基础上,提出了一种QoS估计方法,从服务使用端收集质量信息,利用一种模糊的基于用户QoS要求的QoS估计方法对服务的质量进行计算。实验分析表明了该方法的正确性及可行性。This paper analyzes the state of the art and existing problem of Quality of Service（QoS） and its estimation, and a reference matrix for QoS is given out. A new QoS model which includes service time, service cost, integrity, availability, and reputation is put forward from accurate and flexible view. In this model, a new method for QoS estimation is presented. This method which collects quality information from users is used to calculate the QoS using a kind of fuzzy method for QoS estimation based on the QoS requirement of users. Its correctness and feasibility is indicated through experimental analysis.

关 键 词：服务质量 Qos估计 参考矩阵 QOS要求 模糊 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]