The next wave of wireless technologies is proliferating in connecting things among themselves as well as to humans. In the era of the Internet of things (IoT), billions of sensors, machines, vehicles, drones, and robots will be connected, making the world around us smarter. The IoT will encompass devices that must wirelessly communicate a diverse set of data gathered from the environment for myriad new applications. The ultimate goal is to extract insights from this data and develop solutions that improve quality of life and generate new revenue. Providing large-scale, long-lasting, reliable, and near real-time connectivity is the major challenge in enabling a smart connected world. This paper provides a comprehensive survey on existing and emerging communication solutions for serving IoT applications in the context of cellular, wide-area, as well as non-terrestrial networks. Specifically, wireless technology enhancements for providing IoT access in fifth-generation (5G) and beyond cellular networks, and communication networks over the unlicensed spectrum are presented. Aligned with the main key performance indicators of 5G and beyond 5G networks, we investigate solutions and standards that enable energy efficiency, reliability, low latency, and scalability (connection density) of current and future IoT networks. The solutions include grant-free access and channel coding for short-packet communications, non-orthogonal multiple access, and on-device intelligence. Further, a vision of new paradigm shifts in communication networks in the 2030s is provided, and the integration of the associated new technologies like artificial intelligence, non-terrestrial networks, and new spectra is elaborated. Finally, future research directions toward beyond 5G IoT networks are pointed out.
HAPS-RIS-assisted IoT Networks for Disaster Recovery and Emergency Response: Architecture, Application Scenarios, and Open Challenges
Manisa Celal Bayar University（马尼萨杰拉勒巴亚尔大学）；Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)（加泰罗尼亚电信技术中心）；Zonguldak Bulent Ecevit University（宗古尔达克布伦特·埃切维特大学）；Ericsson Research（爱立信研究）；University of Antwerp–IMEC（安特卫普大学-IMEC）；Carleton University（卡尔顿大学）
Water Quality Prediction on a Sigfox-compliant IoT Device: The Road Ahead of WaterS
Politecnico di Bari（巴里理工大学）；Hamad Bin Khalifa University（哈马德·本·哈利法大学）；CNIT, Consorzio Nazionale Interuniversitario per le Telecomunicazioni（意大利国家跨大学电信联盟）；Exprivia S.p.A.（Exprivia公司）；Sitael S.p.A.（Sitael公司）；Fincons Group S.p.A.（Fincons集团）
Orchestrating the Development Lifecycle of Machine Learning-Based IoT Applications: A Taxonomy and Survey
Newcastle University（纽卡斯尔大学）；University of Leeds（利兹大学）；The University of Sydney（悉尼大学）；Cardiff University（卡迪夫大学）；China University of Geoscience (Wuhan)（中国地质大学（武汉））
Linköping University（林雪平大学）；Aristotle University of Thessaloniki（塞萨洛尼基亚里士多德大学）；Center for Interdisciplinary Research and Innovation（跨学科研究与创新中心）；Yale University（耶鲁大学）
Internet of Everything (IoE) -- From Molecules to the Universe
宇宙是一个巨大的异构网络，由相互连接的实体组成，通过各种形式的相互作用不断产生和交换信息，其中一些尚未被发现。万物互联（IoE）框架受到这个通用网络中无处不在的自适应连接性和无缝互操作性的启发，提出了一个超越传统物联网（IoT）的新路线图，旨在最大限度地提高我们与宇宙接口的分辨率，以实现前所未有的应用。该路线图的第一个支柱是揭示物联网看似不相互作用的分支之间新颖而有形的互连，我们称之为IoX，X指的是它们的应用领域，例如，能源互联网（IoEn）、车联网（IoV）。第二个支柱是开发新的IoX，以补充现有的IoX，以完成整个IoE图景，并将其网络特征与宇宙的网络特征相匹配，以实现无缝和全面的网络物理接口。本白皮书的目的是评估这种整体万物互联方法在扩展当前物联网实践的有限应用前景方面的潜力，其规模可达$\textit{from molecules to the universe}$。为此，我们确定了IoX之间的几种潜在交互途径，并介绍了对万物互联的全面性至关重要的新型和新兴IoX。我们还讨论了在万物互联框架内通过这种互连实现的潜在应用，并确定了相关的挑战。
Multi-Satellite NOMA-Irregular Repetition Slotted ALOHA for IoT Networks
Institute of Communications and Navigation, German Aerospace Center (DLR)（德国航空航天中心导航与通信研究所）；Dept. of Electrical, Electronic, and Information Engineering, University of Bologna（博洛尼亚大学电气、电子与信息工程系）
