An Intelligent Hybrid MAC With Traffic-Differentiation-Based QoS for Wireless Sensor Networks
An Intelligent Hybrid MAC With Traffic-Differentiation-Based QoS for Wireless Sensor Networks
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DOI：
10.1109/jsen.2013.2252163
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发表时间：
2013-03
影响因子：
4.3
通讯作者：
M. Arifuzzaman;M. Matsumoto;Takuro Sato
中科院分区：
文献类型：
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作者：
M. Arifuzzaman;M. Matsumoto;Takuro Sato
在本文中，我们提出了智能混合MAC（IH-MAC），一种新的低功耗与服务质量保证的无线传感器网络（WSNs）的介质访问控制协议。IH-MAC协议在较宽的业务负载范围内实现了较高的能量效率。它可确保缩短关键和延迟敏感数据包的延迟。IH-MAC协议在高业务负载期间实现高信道利用率，而不损害能量效率。IH-MAC利用CSMA和TDMA的优点，智能地实现了这一点。IH-MAC背后的新颖思想是它同时使用广播调度和链路调度。根据网络负载，IH-MAC协议动态地从广播调度切换到链路调度，反之亦然，以实现更好的效率。调度是在IH-MAC与一种新的分散的方法，其中节点本地使用的时钟算法来找到时隙，分配给it. Further，IH-MAC使用请求发送，清除发送握手与方法，用于适应的发射功率达到必要的最低水平，以达到预期的邻居。因此，IH-MAC通过适当地改变发射功率来减少能量消耗。IH-MAC还使用了并行传输的概念，进一步减少了延迟。分析和仿真结果证实了理论思想，并显示我们提出的协议的效率。
In this paper, we present the Intelligent Hybrid MAC (IH-MAC), a novel low power with quality of service guaranteed medium access control protocol for wireless sensor networks (WSNs). The IH-MAC achieves high energy efficiency under wide range of traffic load. It ensures shorter latency to critical and delay-sensitive packets. The IH-MAC protocol achieves high channel utilization during high traffic load without compromising energy efficiency. The IH-MAC does it by using the strength of CSMA and TDMA approach with intelligence. The novel idea behind the IH-MAC is that it uses both the broadcast scheduling and link scheduling. Depending on the network loads, the IH-MAC protocol dynamically switches from broadcast scheduling to link scheduling and vice versa in order to achieve better efficiency. The scheduling is done in the IH-MAC with a novel decentralized approach where the nodes locally use the clock arithmetic to find the time slot, allocated for it. Furthermore, the IH-MAC uses Request-To-Send, Clear-To-send handshakes with methods for adapting the transmit power to the minimum level necessary to reach the intended neighbor. Thus, the IH-MAC reduces energy consumption by suitably varying the transmit power. The IH-MAC also uses the concept of parallel transmission that further reduces delay. The analytical and simulation results corroborate the theoretical idea, and show the efficiency of our proposed protocol.