车载Ad hoc网络中新型广告发布模型设计

A New Model for Advertisement Dissemination in Vehicular Ad hoc Networks

车载Ad hoc网络(VANETs)是Ad hoc网络新的应用领域,随着电子商务活动的发展,传播商业广告成为VANETs最为重要的应用之一。目前,国外越来越多的学者都将注意力转向车载Ad hoc网络的应用研究;而近几年,随着国内电子商务的蓬勃发展,国内学者对电子商务的应用研究也呈上升趋势,其中,怎样有效地发布广告则是研究中的热门话题。基于以上思考,本文提出一种有效的广告分发模型:使用虚拟货币的形式来激励节点转发广告信息,采用动态窗口技术有效防御以消耗系统资源,延长系统响应时间为主的拒绝服务攻击,并能够防止恶意重复转发信息骗取虚拟货币的行为。动态窗口技术具有良好的鲁棒性,在激励和防御DoS攻击方面明显优于传统的身份认证、公钥加密等其他机制。

Vehicular Ad hoc networks （VANETs）is one of new application fields in Ad hoc networks .With the development of ecommerce, one of the most promising applications in VANETs is the dissemination of commercial advertisements. This paper presents a new useful model for advertisements dissemination： Use virtual currency to stimulate nodes disseminate Ads and dynamic window technology to effectively defend a type of DoS attacks, which exhaust the energy of the nodes and increase their response time to broadcast messages. Besides, the mechanism can also prevent malicious nodes disseminate Ads repeatedly for earning virtual currency. The dynamic window scheme is robust in both incentive and security perspectives.