JSJXTYY计算机系统应用Computer Systems and Applications1003-3254计算机系统应用编辑部北京01-7593e2222aa1b1a6d41bfbe9970d806a0e88557635d7ec4a30f6b3da3797b10cd96d10.15888/j.cnki.csa.0075931.0专论•综述Special Issue面向异构IoT业务的LoRa网络自适应参数配置策略Adaptive Configuration Strategy on LoRa Networks for Multi-Heterogeneous IoT Applications蔡青松CAIQing-Song
So far, most researches on LoRa technology are about single-application oriented IoT, low utilization of configurable parameters leaves room for further optimization of network performance. In order to adapt to the growing transmission requirements of heterogeneous multi-type services, it is increasing essential to optimize the performance of the LoRa network. To address the above issue, a dynamic parameters adaptive configuration strategy based on simulated annealing genetic algorithm is proposed, which can improve the number of end devices and data throughput supported by single gateway LoRa network while limiting energy consumption. The simulation results based on LoRaSim reveal that the proposed method outperforms ADR by 25.6%. By simulating the single gateway LoRa network of nearly over 1000 devices, the experimental results show that when packet generation rate 1/100 s, dynamic parameters adaptive configuration strategy proposed in this study can guarantee PDR above 90%. This method can adapt to the data transmission needs of multi-heterogeneous applications and effectively improve the data throughput while ensuring the PDR of each applications.
物联网应用LoRa参数配置吞吐量网络容量IoT applicationLoRaparameter configurationthrough putnetwork capacity北京市自然科学基金-海淀原始创新联合基金(L182007); 国家自然科学基金(61702020)Joint Fund of Natural Science Foundation of Beijing Municipality and Haidian Original Innovation Fund (L182007); National Natural Science Foundation of China (61702020)
近来, 物联网 (Internet of Things, IoT)的迅速发展对通信技术提出了更高要求. 新一代IoT应用的设想是以低成本、低速率的特征连接人、机器和物体, 而实现这一目标的关键是无线通信技术. 新兴无线通信技术还需为分布在广袤区域的大量异构IoT设备提供连接, 例如分散部署在农场和仓库等地的设备就需要通过此技术来传输数据[1], 这些设备之间的通信距离可能超过10公里. 由此, 低功耗广域网(Low Power Wide Area Network, LPWAN)技术的出现弥补了传统的无线通信技术(如蓝牙、ZigBee和移动蜂窝网络)存在的通信距离短、成本高和严格地域限制等不足, 实现了广泛的IoT应用及IoT设备间的通信互连[2].
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