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针对近年来无线传感器网络所设计的MAC协议从不同角度对S-MAC进行了改进,但均没有考虑周期性数据传输的特性这一问题,提出了基于时钟的媒介访问控制算法TB-MAC.TB-MAC根据对流量的预测和节点的历史活跃信息来计算休眠/活动周期.仿真结果表明TB-MAC比S-MAC节省了至少75%的能耗,同时获得了优于S-MAC的延迟性能.
In view of the MAC protocol designed by wireless sensor networks in recent years, the S-MAC is improved from different perspectives. However, no consideration is given to the characteristics of periodic data transmission, and a clock-based media access control algorithm TB-MAC.TB -MAC calculates dormancy / activity cycle based on traffic prediction and node historical activity Simulation results show that TB-MAC saves at least 75% energy consumption compared to S-MAC and achieves better latency than S-MAC .