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首页> 外文期刊>Journal of network and computer applications >DS-MAC: An energy efficient demand sleep MAC protocol with low latency for wireless sensor networks
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DS-MAC: An energy efficient demand sleep MAC protocol with low latency for wireless sensor networks

机译：DS-MAC：针对无线传感器网络的低延迟的高能效需求睡眠MAC协议

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摘要

Duty cycling mechanism has been widely used to conserve energy that consumed by idle listening in wireless sensor networks, while fixed duty cycling introduces transmission latency in packet delivery. End to end latency is one of the most significant factors of packets loss in wireless sensor nodes, and many techniques have been proposed based on listening adaptively to reduce delay, which are mainly designed for light traffic loads. In this paper, we propose a novel asynchronous duty cycling MAC protocol, called demand sleep MAC (DS-MAC) that allows nodes to adjust their sleep time adaptively according to the amount of the received data packets in order to efficient and effective communication in the dynamic traffic load. DS-MAC protocol attempts to transmit a series of short token packets to wake up the receiver, which avoids the overhearing problem. Nodes in DS-MAC put the prediction field into ACK packets, which decreases the waiting delay of source node. Comprehensive simulation shows that when there are variable flows, such as broadcast traffic or transmissions from hidden nodes, DS-MAC significantly decreases waiting delay and energy consumption. (C) 2015 Elsevier Ltd. All rights reserved.
机译：占空比循环机制已被广泛用于节省无线传感器网络中空闲侦听所消耗的能量，而固定占空比循环则在数据包传递中引入了传输延迟。端到端延迟是无线传感器节点中数据包丢失的最重要因素之一，基于自适应侦听以减少延迟的许多技术已被提出，这些技术主要用于轻载流量。在本文中，我们提出了一种新颖的异步占空比循环MAC协议，称为需求睡眠MAC（DS-MAC），该协议允许节点根据接收到的数据包的数量自适应地调整其睡眠时间，以便在网络中进行有效的通信。动态流量负载。 DS-MAC协议尝试发送一系列短令牌包以唤醒接收器，从而避免了监听问题。 DS-MAC中的节点将预测字段放入ACK数据包中，从而减少了源节点的等待延迟。全面的仿真显示，当存在可变流量（例如广播流量或来自隐藏节点的传输）时，DS-MAC可显着减少等待延迟和能耗。 （C）2015 Elsevier Ltd.保留所有权利。

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