面向传感器网络的ICN缓存机制研究
首发时间:2015-12-15
摘要:Wireless Sensor Networks(WSN)是物联网感知层的重要支持技术,它将各式各样的传感设备通过无线自组织的方式连接起来,给人们提供海量数据采集和传输服务。与此同时,Information-Centric Networking(ICN) 逐渐成为近年来受到广泛关注的未来网络体系结构,这类网络体系结构从面向主机的点对点通信转向以海量信息为中心的内容分发,其高效的全网缓存机制极大地提高了内容分发的效率,ICN缓存机制的研究也成为了ICN研究领域的热点问题。因此,本文针对无线传感器网弱网元和数据中心等特性,综合考虑缓存大小、缓存决策策略和缓存替换算法,研究并设计一种面向传感网的协作式ICN缓存机制,对比不同策略和算法组合来分析缓存网络性能,在低能耗低时延的基础上解决同质化缓存和Interest扑空等当前ICN缓存机制存在的问题。最后,通过大规模仿真实验验证该协作式缓存机制在ICN传感网中的可行性和缓存性能。
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Research on ICN cache mechanism for sensor networks
Abstract:Wireless Sensor Networks are very important support technology in perception layer of Internet of Things(IoT).A wide range of sensing devices will connect via a wireless self-organization, to provide people with massive data collection and transmission services. At the same time, Information-Centric Networking (ICN) is becoming widespread concern in recent years in the future architecture of the network, this kind of network architecture shift to massive information-centric content distribution from point to point communications for the host. Its highly efficient network-wide caching mechanism greatly improves the efficiency of content distribution, and research of ICN caching mechanism has become a hot issue in the ICN research.Therefore, for the weak network elements ,data centric and other characteristics in WSN, considering the size of the cache, the cache decision strategy and cache replacement algorithm, we research and design a sensor network for collaborative ICN caching mechanism, comparing different strategies and algorithms to analyze network performance cache, solve the homogenization buffer and Interest outsmarted and other current problems of ICN caching mechanism on the basis of the combination of low-power low-latency. Finally, large-scale simulation experiments validate the feasibility of cooperative caching mechanism and cache performance in ICN sensor network.
Keywords: Wireless Sensor Networks ICN Cache Network Cache mechanisms
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No.4667371111743814****
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