Ad Hoc中互询式节点信用度计算模型  

A reputation model of node computation based on exchange inquiry scheme in Ad Hoc networks

作　　者：魏妮妮 宋翌[1] 

机构地区：[1]武汉生物工程学院计算机与信息工程系,湖北武汉430415

出　　处：《实验技术与管理》2013年第3期96-98,122,共4页Experimental Technology and Management

基　　金：湖北省自然科学基金(2011CD297);新世纪优秀人才支持计划(NCET-08-0806);武汉市教育局科研项目(2009k100)

摘　　要：网络中节点的信用度在有效预防自私节点与恶意节点对Ad Hoc网络性能的破坏方面起着十分重要的作用。针对Ad Hoc网络中自私节点的存在导致拒绝转发数据、降低网络的转发性能的问题,通过一种量化指标加强对节点行为的监控,提出了一种新的基于互询式的节点信用度计算模型。研究了该模型的实现机理,并从网络丢包率和节点信用度值变化等角度阐述了此模型的优势与可行性。使用NS2进行仿真,计算模型能够较精确地反映出节点的信任度,有效地制止节点恶意行为的发生。The reputations of the network nodes play an important role in the Ad Hoc networks which could effectively prevent malicious nodes and selfish nodes to bring destruction of the network performance.Aiming at solving the problems that existing of selfish nodes caused can refuse to forward data pack,thereby reducing the forwarding performance of the networks for Ad Hoc networks,by using a quantitative indicator to strengthen the monitoring of the nodes behavior,proposed a new mechanism which was a node reputation computation model based on exchange inquiry.This paper studies the implementation mechanism of the model,and then from the dropping quota packs of the networks and the change of the node reputations,describes the advantages and feasibility of this model.Simulation with the NS2 is used.The simulation results show that the computation model proposed can reflect the reputation of the nodes more exactly,so they can stop the occurrence validly about the malicious behavior of the nodes.

关 键 词：信用度计算模型 AD HOC网络 自私节点 互询式 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]