【摘要】 文章针对带状监测无线传感器网络节点由于干扰或能量耗尽而失效时引起网络性能大幅波动甚至链路中断问题,提出了一种适用于带状拓扑结构的健壮MAC协议,称为SBR-MAC(Strip-based RobustMAC);该协议通过增加冗余中继节点,采用DMAC协议的交错唤醒调度机制,并对其时隙结构加以改进,使其绕过失效节点。仿真结果表明,当带状监测无线传感器网络中出现节点失效时,相比于直接应用DMAC协议,SBR-MAC协议在能耗增加不大的前提下,网络的稳定性和可靠性得到加强。更多还原

【Abstract】 To decrease the fluctuations in network performance or even link interruption caused by nodes failure due to the interference or energy depletion,a robust MAC protocol called strip-based robust MAC(SBR-MAC) is proposed for the strip-based monitoring wireless sensor network(WSN).By adding redundant relay nodes,and using staggered wakeup scheduling mechanism of the DMAC protocol and improving its time slot,the failed nodes can be bypassed.The simulation results show that when the node fails in strip-based monitoring WSN,in comparison with the direct application of DMAC protocol,the stability and reliability of the network are strengthened by SBR-MAC protocol under the premise of small increase in energy consumption.更多还原