天津科技大学学报
天津科技大學學報
천진과기대학학보
JOURNAL OF TIANJIN UNIVERSITY OF SCIENCE & TECHNOLOGY
2013年
4期
70-73,78
,共5页
车载自组网%分簇%权重因子%可信路由
車載自組網%分簇%權重因子%可信路由
차재자조망%분족%권중인자%가신로유
VANET%clustering%weighted factor%trust routing
针对较适用于车载自组网的分簇式路由协议的安全问题，提出一种基于分簇的可信路由算法，即在簇头选择过程根据权重因子进行筛选。该算法将节点通信过程中在一定时间内收发数据包的好坏程度作为其信誉值，在选择簇头过程中将节点的信誉值作为重要的权重因子，由于通信过程中信誉值实时更新，可将低于信誉阀值的节点剔除，从而达到安全目的，实现了在车载自组网中的可信路由。实验结果表明，该算法较WCA(weighted clustering algorithm)算法具有较高的抵抗自私节点的能力。
針對較適用于車載自組網的分簇式路由協議的安全問題，提齣一種基于分簇的可信路由算法，即在簇頭選擇過程根據權重因子進行篩選。該算法將節點通信過程中在一定時間內收髮數據包的好壞程度作為其信譽值，在選擇簇頭過程中將節點的信譽值作為重要的權重因子，由于通信過程中信譽值實時更新，可將低于信譽閥值的節點剔除，從而達到安全目的，實現瞭在車載自組網中的可信路由。實驗結果錶明，該算法較WCA(weighted clustering algorithm)算法具有較高的牴抗自私節點的能力。
침대교괄용우차재자조망적분족식로유협의적안전문제，제출일충기우분족적가신로유산법，즉재족두선택과정근거권중인자진행사선。해산법장절점통신과정중재일정시간내수발수거포적호배정도작위기신예치，재선택족두과정중장절점적신예치작위중요적권중인자，유우통신과정중신예치실시경신，가장저우신예벌치적절점척제，종이체도안전목적，실현료재차재자조망중적가신로유。실험결과표명，해산법교WCA(weighted clustering algorithm)산법구유교고적저항자사절점적능력。
Focused on the security issues about clustering routing protocol which is more suitable for VANET(vehicular Ad Hoc network),a trust routing of the clustering algorithm which took weights into consideration was proposed. The algorithm takes the situation of the nodes’ sending and receiving data packets during a period of communications as the reputation value. When processing the cluster head,the nodes’ reputation value is an important weighting factor.The timely changes of the reputation value can help exclude the low credit nodes from the communications. The cooperation of trust weight and reputation value can lead to safer VANET and lower load. Simulations show that the improved algorithm,compared with WCA,has a better ability to counter selfish nodes.
