Internet of Things (IoT) is one of the main features in 5G. Low-power wide-area networking (LPWAN) has attracted enormous research interests to enable large scale deployment of IoT, with the design objectives of low cost, wide coverage area, as well as low power consumption. In particular, long battery lifetime is essential since many of the IoT devices will be deployed in hard-to-access locations. Prediction of the battery lifetime depends on the accurate modelling of energy consumption. This paper presents a comprehensive power consumption model for battery lifetime estimation, which is based on User Equipment(UE) states and procedures, for two cellular IoT technologies: Narrowband Internet of Things (NB-IoT) and Long Term Evolution for Machines (LTE-M). A measurement testbed has been setup and the proposed model has been tested and validated via extensive measurements under various traffic patterns and network scenarios, achieving the modelling inaccuracy within5%. The measurement results show that the battery lifetime of an IoT device can reach up to 10 years as required by 3GPP, with proper configuration of the traffic profile, the coverage scenario, as well as the network configuration parameters.
翻译:低功率广域网(LPWAN)吸引了巨大的研究兴趣,以便大规模部署IOT,其设计目标是低成本、广覆盖面和低电耗。特别是,长电池寿命至关重要,因为许多IOT装置将部署在难以进入的地点。对电池寿命的预测取决于准确的能源消耗模型。本文介绍了一个电池寿命期估算的综合电力消耗模型,该模型以用户设备(UE)状态和程序为基础,用于两种移动电话IOT技术:窄带物质互联网(NB-IOT)和机器长期演变(LTE-M)。已经设置了一个测量测试台,并在各种交通模式和网络情景下通过广泛测量对拟议模型进行了测试和验证,在5%范围内实现模型不准确性。测量结果显示,IOT装置的电池寿命可以达到3GPP所要求的10年,并适当配置交通状况、覆盖范围和网络参数。