低功耗,低延迟:机会路由满足占空比

O. Landsiedel, E. Ghadimi, S. Duquennoy, M. Johansson
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引用次数: 237

摘要

传统上,无线传感器网络中的路由包括两个步骤:首先,路由协议选择下一跳,其次,MAC协议等待预期目的地唤醒并接收数据。这种设计使其难以适应链路动态,并且在等待下一跳唤醒时引入延迟。本文介绍了一种实用的无线传感器网络机会路由方案ORW。在占空比设置中,报文被发送给一组潜在的接收者,并由最先醒来并成功接收到报文的邻居转发。通过利用所有邻居作为潜在的转发器,这减少了延迟和能源消耗。此外,这通过利用空间多样性增加了对无线链路动态的弹性。我们的研究结果表明,与现有技术相比,ORW平均减少了50%的无线电占空比(单个节点高达90%),延迟减少了30%至90%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Low power, low delay: Opportunistic routing meets duty cycling
Traditionally, routing in wireless sensor networks consists of two steps: First, the routing protocol selects a next hop, and, second, the MAC protocol waits for the intended destination to wake up and receive the data. This design makes it difficult to adapt to link dynamics and introduces delays while waiting for the next hop to wake up. In this paper we introduce ORW, a practical opportunistic routing scheme for wireless sensor networks. In a duty-cycled setting, packets are addressed to sets of potential receivers and forwarded by the neighbor that wakes up first and successfully receives the packet. This reduces delay and energy consumption by utilizing all neighbors as potential forwarders. Furthermore, this increases resilience to wireless link dynamics by exploiting spatial diversity. Our results show that ORW reduces radio duty-cycles on average by 50% (up to 90% on individual nodes) and delays by 30% to 90% when compared to the state of the art.
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