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首页> 外文期刊>International journal of mobile computing and multimedia communications >Throughput-Delay Evaluation of a Hybrid-MAC Protocol for M2M Communications
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Throughput-Delay Evaluation of a Hybrid-MAC Protocol for M2M Communications

机译：用于M2M通信的混合MAC协议的吞吐量延迟评估

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摘要

This paper proposes a robust hybrid-MAC protocol for direct communication among M2M devices with gateway coordination. The proposed protocol combines the benefits of both contention-based and reservation-based MAC schemes. The authors assume that the contention and reservation portion of M2M devices is a frame structure, which is comprised of two sections: Contention Interval (CI) and Transmission Interval (TI). The CI is based on p-persistent CSMA mechanism, which allows M2M devices to compete for the transmission slots with equal priorities. After contention, only those devices, which have won time-slots, are allowed to transmit data packets during TI. In the authors' proposed MAC scheme, the TI is basically a TDMA frame and each M2M device is 802.11 enabled. Each M2M transmitter device and its corresponding one-hop distant receiver communicate using IEEE 802.11 DCF protocol within each TDMA slot to overcome the limitations of TDMA mechanism. The simulation results demonstrate the effectiveness of the proposed hybrid-MAC protocol.
机译：本文提出了一种健壮的混合MAC协议，用于具有网关协调功能的M2M设备之间的直接通信。所提出的协议结合了基于竞争和基于预留的MAC方案的优势。作者假设M2M设备的争用和预留部分是一个帧结构，它由两个部分组成：争用间隔（CI）和传输间隔（TI）。 CI基于p持久CSMA机制，该机制允许M2M设备以相同的优先级竞争传输时隙。争用之后，只有那些赢得了时隙的设备才被允许在TI期间传输数据包。在作者提出的MAC方案中，TI基本上是TDMA帧，每个M2M设备都支持802.11。每个M2M发送器设备及其对应的单跳远距离接收器在每个TDMA时隙内使用IEEE 802.11 DCF协议进行通信，以克服TDMA机制的局限性。仿真结果证明了所提出的混合MAC协议的有效性。

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