基于信誉的延迟容忍网络激励方案  

A Reputation-Based Incentive Scheme for Delay Tolerant Networks

作　　者：张磊[1] 张希[1] 安成锦[1] 唐朝京[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《电子学报》2014年第9期1738-1743,共6页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61101073)

摘　　要：由于长延迟、频繁中断等特性,延迟容忍网络采用"存储-携带-转发"的路由方式实现报文的传递.这种传输方式建立在网络节点互相信任,诚实合作的假设之上.然而,由于受到自身资源的限制,网络中存在自私节点拒绝参与网络合作的行为,导致网络传输性能下降,甚至无法正常运行.针对此类问题,本文提出一种基于信誉的延迟容忍网络激励方案,鼓励节点共享资源,并约束自私行为.设计了一种观测协议,以解决延迟容忍网络环境下对网络节点行为的观测问题;提出了一种信誉模型,通过信任值评价节点的可信程度,从而优化路由决策,惩罚自私节点.仿真结果表明了本文提出的激励方案的有效性和可行性.Due to the long delay and frequent disconnection ,“store-carry-forward” manner was designed and adopted for bundle propagation in delay tolerant networks （DTN ） .The transmission process is on the basis of the hypothesis that DTN nodes depend on each other and participate in cooperation honestly .However ,as constrained with the limited communication and band-width resources ,selfish nodes will usually deny cooperating ,which degrades the performance of DTNs .To address the selfishness is-sue ,a reputation-based incentive scheme is proposed for DTN to stimulate nodes to share resources and restrain misbehaving in this paper .An observation protocol is presented to observe other’s behavior .A novel reputation model is proposed to determine the de-gree of trust ,influence routing decision ,and punish selfish nodes .The simulation results demonstrate the effectiveness of the pro-posed scheme .

关 键 词：延迟容忍网络 信誉 激励 信任 自私行为 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]