We present a new fast polling algorithm (FPA) in a wireless mesh network (WMN) for Narrowband Internet of Things systems using multi-hop WMNs. We focus on wireless networks with stationary IoT remote telemetry units (IoT RTU), such as wireless network monitoring. The goal of the new FPA is to minimize the time required for supervisory control and data acquisition center to poll all RTUs one by one and to receive their responses using random network coding. We study the performance of the proposed FPA by applying it in a WMN composing of 3 and 50 RTUs with a sub-carrier spacing of 6.25 kHz, 12.5 kHz, 25 kHz, and 50 kHz. This paper also provides a comparative study of existing polling cycle mechanisms; we find that our FPA significantly outperforms previously proposed polling-cycle mechanisms with improvements typically exceeding 70%.

我们为使用多跳WMN的窄带物联网系统在无线网状网络（WMN）中提出了一种新的快速轮询算法（FPA）。我们专注于具有固定IoT远程遥测单元（IoT RTU）的无线网络，例如无线网络监控。新的FPA的目标是最大程度地减少监督控制和数据采集中心一次轮询所有RTU并使用随机网络编码接收其响应所需的时间。我们通过将FPA应用于由3个和50个RTU组成的WMN（子载波间隔为6.25 kHz，12.5 kHz，25 kHz和50 kHz）来研究所提出的FPA的性能。本文还提供了对现有轮询周期机制的比较研究；我们发现，我们的FPA明显优于先前提出的轮询周期机制，其改进通常超过70％。