Collaborative Research: CNS Core: Small: Scalable, Flexible, and Dependable Architecture Design for Heterogeneous Internet of Things

广泛部署的物联网（IoT）的扩散改变了人们获取信息的方式，改变了他们日常生活的方方面面。鉴于不同的数据传输和业务需求，各种不同的无线协议被开发并应用于物联网。这种设备异构问题已经成为现实物联网系统（如工业物联网、智能制造和互联医疗）的可扩展性、灵活性和可靠性的主要障碍。该项目正在为当前物联网系统开发一种新的分层架构网络层设计，其中将引入中间层，以帮助从异构物联网设备收集数据。特别是，第一个研究重点将集中在大规模数据收集的网络稳定性上，通过利用移动多协议网关（m - mg）作为中间层来支持动态数据流量模式。面对现有无线协议有限的频谱资源，第二个研究重点是设计自适应和分层资源管理方案，以更好地利用可用的m - mg进行数据收集。在同一无线环境中，各种类型的不协调协议共存，不可避免地给各个通信链路的安全性带来了严重的问题。第三个研究重点将研究增强保密能力的方法，以防止无线攻击损害系统的可靠性。研究活动正在通过模拟、实验、原型设计和实际物联网系统实施的组合进行彻底评估。该项目的成功将成为未来异构物联网系统网络级设计的关键推动者。提出的新架构可以更好地处理大规模物联网系统中的共存问题，为网络性能提供了较强的稳定性。利用廉价的m - mg甚至智能手机，现有的物联网基础设施不需要进行彻底的改造，这大大降低了改造成本，扩展了其应用场景。对物联网保密能力的理论分析将增强现有知识，在现有加密方法之外提供高安全标准。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The proliferation of widely deployed Internet of Things (IoT) has changed the way people access information, transforming every aspect of their daily life. Given different data transmission and service requirements, various different wireless protocols have been developed and applied to IoT. This device heterogeneity issue has become the major stumbling block to the scalability, flexibility, and dependability of real IoT systems, such as industrial IoT, smart manufacturing, and connected healthcare. This project is developing a novel network-layer design in a hierarchical architecture for current IoT systems, where an intermediate layer will be introduced to help collect data from heterogeneous IoT devices. In particular, the first research thrust will focus on network stability for large-scale data collection by leveraging mobile multi-protocol gateways (M-MGs) as the intermediate layer to support dynamic data traffic patterns. In face of the limited spectrum resource on coexisting wireless protocols, the second research thrust will design adaptive and hierarchical resource management schemes to better utilize available M-MGs for data collection. Various types of uncoordinated protocols coexist in the same wireless environment, which inevitably raises serious concerns on the security of each communication link. The third research thrust will investigate secrecy capacity enhancement approaches to prevent wireless attacks from compromising the system dependability. The research activities are being thoroughly evaluated via a combination of simulation, experiments, prototyping, and implementation in practical IoT systems.The success of this project will serve as a key enabler to the network-level design of future heterogeneous IoT systems. The proposed novel architecture can better handle the coexistence issue in large-scale IoT systems, providing strong stability to the network performance. By leveraging the inexpensive M-MGs or even smartphones, existing IoT infrastructures do not need to have a complete retrofitting, which greatly reduces the renovation costs and extends their application scenarios. The developed theoretical analysis on the secrecy capacity of IoT will enhance the existing knowledge to provide high-security standards in addition to existing cryptographic approaches.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.