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首页> 外文期刊>ACM transactions on sensor networks >Monitoring Bats in the Wild: On Using Erasure Codes for Energy-Efficient Wireless Sensor Networks
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Monitoring Bats in the Wild: On Using Erasure Codes for Energy-Efficient Wireless Sensor Networks

机译：在野外监视蝙蝠：关于将擦除代码用于节能无线传感器网络

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摘要

We explore the advantages of using Erasure Codes (ECs) in a very challenging sensor networking scenario, namely, monitoring and tracking bats in the wild. The mobile bat nodes collect contact information that needs to be transmitted to stationary base stations whenever they are in communication range. We are particularly interested in improving the overall communication reliability of the wireless communication. The mobile nodes are capable of storing a few 100kB of data and to exchange contact information in aggregated form. Due to the continuous flight of the bats and the forest environment, the wireless channel quality varies quickly and, thus, the communication is in general assumed to be highly unreliable. Given the very strict energy constraints of the mobile node and the inherently asymmetric channels, conventional techniques such as full data replication or Automatic Repeat Request to improve the communication reliability are prohibitive. In this work, we investigate the tradeoff between reliability achieved and the cost in form of additional transmissions, that is, the additional energy costs. Our energy measurements on a real platform combined with larger-scale simulation of the wireless communication clearly indicate the advantages of using ECs in our scenario. The results are also applicable in other configurations when unreliable communication channels meet tight energy budgets.
机译：我们探索了在极富挑战性的传感器联网场景中使用擦除代码（EC）的优势，即在野外监视和追踪蝙蝠。只要它们在通信范围内，移动蝙蝠节点就会收集需要发送到固定基站的联系信息。我们对提高无线通信的整体通信可靠性特别感兴趣。移动节点能够存储几百kB的数据，并能够以聚合形式交换联系信息。由于蝙蝠的不断飞行和森林环境，无线信道质量快速变化，因此，通常认为通信非常不可靠。考虑到移动节点非常严格的能量限制和固有的不对称信道，常规技术（例如完整数据复制或自动重复请求）可提高通信可靠性，这是令人望而却步的。在这项工作中，我们研究了在实现的可靠性与额外传输形式的成本（即额外能源成本）之间的权衡。我们在真实平台上的能量测量与无线通信的大规模仿真相结合，清楚地表明了在我们的方案中使用EC的优势。当不可靠的通信信道满足严格的能源预算时，结果也适用于其他配置。

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