Bird-MAC: Energy-Efficient MAC for Quasi-Periodic IoT Applications by Avoiding Early Wake-up
Bird-MAC: Energy-Efficient MAC for Quasi-Periodic IoT Applications by Avoiding Early Wake-up
复制标题
Bird-MAC：通过避免早期唤醒实现准周期性物联网应用的节能 MAC
DOI：
10.1109/tmc.2019.2899572
复制
发表时间：
2020
影响因子：
7.9
通讯作者：
Yung Yi
中科院分区：
文献类型：
--
作者：
Daewoo Kim;Jinhwan Jung;Yoonpyo Koo;Yung Yi
我们为物联网应用提出了一种新的MAC协议，称为Bird-MAC，它在物联网传感器以准周期性方式报告监测状态的应用中具有高能效，例如结构健康监测和静态环境监测。Bird-MAC的两个关键设计思想是：(a)不需要提前唤醒发射机；(b)在同步和协调成本之间取得适当的平衡。通过允许节点（无论是发送器还是接收器）按照给定的唤醒时间表唤醒，并让晚起的鸟（晚起）将其唤醒状态通知相应的早起的鸟（早起的鸟），其中早起的鸟很少等待晚起的鸟的唤醒信号(a)是可能的。通过将Bird-MAC设计为介于纯同步和异步方案之间的方案来实现思想(b)。我们提供了一个严格的数学分析，用于选择正确的Bird-MAC协议参数。我们通过大量的仿真和实际实验证明了Bird-MAC的性能。在我们的试验台上，在我们办公楼的地下停车场使用一个26节点的试验台来监测其结构健康状况，实验表明，与现有的传感器MAC协议相比，能耗减少了大约45%。我们还通过在韩国永宗大桥上进行的实验，证实了Bird-MAC在具有挑战性和现实情况下的适用性。
We propose a new MAC protocol for IoT applications, called Bird-MAC, which is highly energy efficient in the applications where IoT sensors report monitoring status in a quasi-periodic manner, as in structural health monitoring and static environmental monitoring. Two key design ideas of Bird-MAC are: (a) no need of early-wake-up of transmitters and (b) taking the right balance between synchronization and coordination costs. The idea (a) is possible by allowing a node (whether it is a transmitter or receiver) to wake up just with its given wake-up schedule, and letting a late bird (which wakes up later) notify its wake-up status to its corresponding early bird (which wakes up earlier), where the early bird just infrequently waits for the late bird's wake-up signal. The idea (b) is realized by designing Bird-MAC to be placed in a scheme between purely synchronous and asynchronous schemes. We provide a rigorous mathematical analysis that is used to choose the right protocol parameters of Bird-MAC. We demonstrate the performance of Bird-MAC through extensive simulations, and real experiments. The experiment on our testbed using a 26 node testbed at an underground parking lot of our office building to monitor its structural health shows that energy consumption is reduced by about up to 45 percent over existing sensor MAC protocols. We also confirm the applicability of Bird-MAC in a challenging and realistic scenario through the experiment on Yeongjong Grand Bridge in South Korea.