研究在物联网低地轨道星座中整合容时网络协议,用于防洪

IF 3.1 2区 物理与天体物理 Q1 ENGINEERING, AEROSPACE
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引用次数: 0

摘要

在物联网(IoT)时代,开发直接对卫星物联网(DtS-IoT)应用变得越来越重要。这些应用的基础是使物联网设备能够直接与卫星通信。在这种情况下,低地轨道卫星可提供全球物联网服务覆盖,对连接偏远地区的设备至关重要。例如,随着非地面网络(NTN)和 DtS-IoT 概念的出现,人们正在积极研究部署窄带物联网(NB-IoT)服务。虽然一些倡议提出了无缝和无处不在的服务,但物联网应用可能并不需要这些功能。这就放宽了对卫星星座架构的要求,使其更加稀疏。在这些非密集架构中,传感器、卫星和地面段之间的连接变得断断续续、不连贯。要与这种网络特性共存,延迟/中断容忍协议是必不可少的。遗憾的是,传统的物联网协议在设计上并不具备这种延迟容忍特性。这项工作通过将延迟容忍网络协议与 NB-IoT 架构集成来应对这一挑战。具体来说,这种集成是通过一个新颖的接口将捆绑协议和 IP 流量互连起来。开发工作分为三个阶段:(1)定义架构和协议栈,以解决具有不连续性的 NTN 物联网场景;(2)根据模拟数据分析基于洪水预防的现实场景中产生的协议栈;(3)在实验室测试平台上实施和验证。建议的案例研究使用直接对卫星物联网架构来创建洪水预警检测系统。仿真结果提供了这些架构在为数百个传感节点提供服务时所实现的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study to integrate Delay-Tolerant Network protocols in IoT LEO constellations for flood prevention
In the era of the Internet of Things (IoT) the development of Direct-to-Satellite IoT (DtS-IoT) applications are becoming increasingly relevant. These applications are based on enabling IoT devices to communicate directly with satellites. In this scenario, LEO satellites can provide global IoT service coverage, becoming essential to connect devices in remote areas. As an example, the deployment of NarrowBand-IoT (NB-IoT) service is being actively investigated with the apparition of Non-Terrestrial Network (NTN) and DtS-IoT concepts. Although some initiatives propose seamless and ubiquitous service, these features may not be required for IoT applications. This relaxes the requirements in the satellite constellation architecture, enabling it to be more sparse. The connection between sensors, satellites and ground segment becomes intermittent and discontinuous in these non-dense architectures. Delay/Disruptive-tolerant protocols are essential to coexist with this network characteristics. Unfortunately, traditional IoT protocols have not been designed with this delay-tolerant feature. This work tackles this challenge by integrating Delay-Tolerant Network protocols with NB-IoT architecture. Specifically, the integration is based on interconnecting the Bundle Protocol and IP traffic through a novel interface. This development has been divided in three phases: (1) The definition of an architecture and protocol stack to tackle NTN IoT scenarios with discontinuities, (2) the analysis from simulated data of the resulting protocol stack in a realistic scenario based on flooding prevention, and (3) the implementation and validation of it in a laboratory testbed. The proposed case study uses a Direct-to-Satellite IoT architecture to create an early warning flooding detection system. The simulation results provide insights of the achieved performance with these architectures when servicing hundreds of sensing nodes.
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来源期刊
Acta Astronautica
Acta Astronautica 工程技术-工程:宇航
CiteScore
7.20
自引率
22.90%
发文量
599
审稿时长
53 days
期刊介绍: Acta Astronautica is sponsored by the International Academy of Astronautics. Content is based on original contributions in all fields of basic, engineering, life and social space sciences and of space technology related to: The peaceful scientific exploration of space, Its exploitation for human welfare and progress, Conception, design, development and operation of space-borne and Earth-based systems, In addition to regular issues, the journal publishes selected proceedings of the annual International Astronautical Congress (IAC), transactions of the IAA and special issues on topics of current interest, such as microgravity, space station technology, geostationary orbits, and space economics. Other subject areas include satellite technology, space transportation and communications, space energy, power and propulsion, astrodynamics, extraterrestrial intelligence and Earth observations.
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