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首页> 外文期刊>Parallel and Distributed Systems, IEEE Transactions on >Design and Performance Evaluation of Overhearing-Aided Data Caching in Wireless Ad Hoc Networks
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Design and Performance Evaluation of Overhearing-Aided Data Caching in Wireless Ad Hoc Networks

机译：无线自组织网络中助听数据缓存的设计和性能评估

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摘要

Wireless ad hoc network is a promising networking technology to provide users with Internet access anywhere anytime. To cope with resource constraints of wireless ad hoc networks, data caching is widely used to efficiently reduce data access cost. In this paper, we propose an efficient data caching algorithm which makes use of the overhearing property of wireless communication to improve caching performance. Due to the broadcast nature of wireless links, a packet can be overheard by a node within the transmission range of the transmitter, even if the node is not the intended target. Our proposed algorithm explores the overheard information, including data request and data reply, to optimize cache placement and cache discovery. To the best of our knowledge, this is the first work that considers the overhearing property of wireless communications in data caching. The simulation results show that, compared with one representative algorithm and a naive overhearing algorithm, our proposed algorithm can significantly reduce both message cost and access delay.
机译：无线自组织网络是一种有前途的联网技术，可以随时随地为用户提供Internet访问。为了应对无线自组织网络的资源限制，广泛使用数据缓存来有效降低数据访问成本。在本文中，我们提出了一种有效的数据缓存算法，该算法利用无线通信的监听性能来提高缓存性能。由于无线链路的广播性质，即使发送器不是预期的目标，数据包也可能会被发送器的传输范围内的某个节点窃听。我们提出的算法探索包括数据请求和数据回复在内的监听信息，以优化缓存放置和缓存发现。就我们所知，这是考虑数据通信中无线通信的偷听属性的第一项工作。仿真结果表明，与一种代表性算法和一种幼稚的监听算法相比，本文提出的算法可以显着降低消息开销和访问延迟。

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