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PD-MAC: Design and Implementation of Polling Distribution-MAC for Improving Energy Efficiency of Wireless Sensor Networks

机译:PD-MAC:提高无线传感器网络能效的轮询分布-MAC的设计与实现

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Reducing the energy consumed by MAC layer in Wireless Sensor Networks (WSNs) can lead to major performance improvements. A number of previous scholars have focused on optimizing the energy usage in WSN through adjusting the wake-up intervals, duty cycles and polling intervals. Some of the protocols focusing on dynamically adjusting the duty-cycle or channel polling intervals based on the traffic arrival patterns include SCP-MAC, RIMAP, AS-MAC, MCAS-MAC, LAD and self-adaptive wakeup scheduling scheme. This paper aims at improving the energy efficiency of MAC protocols by studying the influence of using ‘polling interval distributions’ rather than ‘polling intervals’ for different traffic types. The influence of using deterministic and exponential polling interval distributions is illustrated by developing an asynchronous MAC protocol PD-MAC (Polling Distribution-MAC). Two types of traffic: deterministic and exponential has been used for evaluating the performance of PD-MAC. TinyOS platform for mica2 motes has been used for implementation. The impact of varying message generation intervals and polling intervals, over the delay and energy performance of PD-MAC has been studied. Results have revealed that PD-MAC with exponentially distributed polling intervals results in improved energy performance in contrast to PD-MAC with deterministic polling intervals. Similarly, PD-MAC with exponentially distributed polling intervals is shown to outperform established MAC protocol SCP-MAC. Hence, the major contribution of PD-MAC is to introduce an energy efficient MAC solution for WSN applications operating under different traffic patterns without the need of extensive memory usage or computational complexity.
机译:减少无线传感器网络(WSN)中MAC层所消耗的能量可以带来重大的性能提升。许多以前的学者都致力于通过调整唤醒间隔,占空比和轮询间隔来优化WSN中的能源使用。一些基于流量到达模式动态调整占空比或信道轮询间隔的协议包括SCP-MAC,RIMAP,AS-MAC,MCAS-MAC,LAD和自适应唤醒调度方案。本文旨在研究不同流量类型使用“轮询间隔分布”而不是“轮询间隔”的影响,从而提高MAC协议的能效。通过开发异步MAC协议PD-MAC(轮询分布-MAC)来说明使用确定性和指数轮询间隔分布的影响。两种流量:确定性流量和指数流量已用于评估PD-MAC的性能。用于云母的TinyOS平台已用于实施。研究了消息生成间隔和轮询间隔的变化对PD-MAC的延迟和能量性能的影响。结果表明,与具有确定性轮询间隔的PD-MAC相比,具有成指数分布的轮询间隔的PD-MAC可提高能源性能。类似地,显示轮询间隔呈指数分布的PD-MAC优于已建立的MAC协议SCP-MAC。因此,PD-MAC的主要贡献在于为在不同流量模式下运行的WSN应用引入了一种节能的MAC解决方案,而无需大量的内存使用或计算复杂性。

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