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IEEE802.11p车载自组网的HSCPN建模及分析

DOI: 10.13190/j.jbupt.2015.02.024, PP. 127-130

Keywords: 车载自组网,IEEE802.11p,层次随机着色Petri网,建模与分析

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Abstract:

针对分析模型和仿真模型研究车载自组网IEEE802.11p广播模式网络性能存在的不足,采用层次随机着色Petri网(HSCPN,hierarchicalstochasticcoloredPetrinet)对协议的媒体访问控制层进行建模,模型着重描述了消息的产生、重传、退避和虚拟碰撞的过程.在此模型的基础上,对网络性能指标进行了分析.结果表明高优先级队列的消息具有较小的时延和时延抖动.HSCPN建模方法的采用可直观地了解协议的运行机制,有利于协议的改进,并可为车载自组网的部署提供理论依据.

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