WSN05-6: An Energy-Efficient Low-Latency MAC Protocol for Wireless Sensor Networks
WSN05-6: An Energy-Efficient Low-Latency MAC Protocol for Wireless Sensor Networks
复制标题
WSN05-6：用于无线传感器网络的节能低延迟 MAC 协议
DOI：
10.1109/glocom.2006.493
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
A. Khokhar
中科院分区：
文献类型：
--
作者：
Heping Wang;Xiaobo Zhang;A. Khokhar
针对无线传感器网络中业务负载低、资源有限的特点，提出了一种适合无线传感器网络协同应用的低功耗、低时延、高吞吐量的介质访问控制（MAC）协议。该协议被称为混合MAC (hybrid MAC)，它结合了现有的基于争用和基于tdma的MAC协议的能效特点，并采用比S-MAC更短的帧结构来加快数据包的传输速度。它通过允许一个节点的多个邻居在一个帧中向该节点传输数据来维护每个节点的公平性，从而进一步提高了网络性能。在NS-2中实现了该协议，仿真结果表明，HMAC协议的能耗比S-MAC协议提高了8倍。同样，平均而言，每跳延迟减少了5-13倍，吞吐量提高了39%。
Considering the low traffic load and limited resources in wireless sensor network (WSN), this paper presents a power, latency and throughput efficient medium access control (MAC) protocol especially suitable for collaborative applications in wireless sensor networks. The proposed protocol, referred to as hybrid MAC (HMAC), combines energy efficiency features of the existing contention-based and TDMA-based MAC protocols and adopts a short frame structure compared to S-MAC to expedite packet delivery. It maintains per-node fairness by allowing more than one neighbors of a node to transmit data to the node in one frame, which further improves the network performance. The proposed protocol has been implemented in NS-2 and our simulation results show that HMAC improves energy consumption by factor of 8 compared to S-MAC. Similarly, on the average, per hop latency is reduced by a factor of 5-13, and throughput is improved by 39%.