An Energy Efficient Multi-channel MAC Protocol for wireless ad hoc networks
An Energy Efficient Multi-channel MAC Protocol for wireless ad hoc networks
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DOI：
10.1109/glocom.2012.6503151
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Duc Ngoc Minh Dang;N. Mui;C. Hong;Sungwon Lee;K. Chung
中科院分区：
文献类型：
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作者：
Duc Ngoc Minh Dang;N. Mui;C. Hong;Sungwon Lee;K. Chung
IEEE 802.11 [1]在物理层为无线通信提供了多个信道，但介质访问控制（MAC）协议仅为单个信道设计。如果多信道MAC协议可以利用多个信道，则在不同信道上可以存在多个传输。此外，功率控制算法可以提高无线信道的空间复用性。本文将联合收割机的多信道MAC协议与功率控制算法相结合，以充分利用多个信道，提高频率复用率。我们提案的主要思想是在ATIM窗口和数据窗口中使用具有不同传输功率级别的IEEE 802.11节能方案（PSM）。所有节点在ATIM窗口期间竞争数据信道的同时以最大功率发送ATIM/ATIM-ACK/ATIM-RES消息，并且在其协商的信道上使用数据窗口中的最小所需传输功率。仿真结果表明，E-MMAC协议提高了网络的总吞吐量、平均时延和能量效率。
The IEEE 802.11 [1] provides multiple channels for wireless communications at the Physical Layer, but the Medium Access Control (MAC) protocol is only designed for a single channel. If the multiple channels can be exploited by multi-channel MAC protocol, there can be multiple transmissions on different channels. Besides that, the power control algorithm can improve the spatial reuse of wireless channels. In this paper, we combine the multi-channel MAC protocol and the power control algorithm together to exploit multiple channels and improve frequency reuse. The main idea of our proposal is to use IEEE 802.11 Power Saving Scheme (PSM) with different transmission power levels in the ATIM window and the data window. All nodes transmit ATIM/ATIM-ACK/ATIM-RES messages with the maximum power while contending the data channel during the ATIM window, and use the minimum required transmission power in the data window on their negotiated channels. The simulation results show that the proposed E-MMAC improve the performance of the network: aggregate throughput, average delay and energy efficiency.