Design And Implementation Of MWoT Multi-domain Architecture

The Internet of Things,as an important support for the country's strategic emerging industries,is the core and foundation of industries such as smart cities,military defense,and smart manufacturing.Multi-domain,openness,and security are the basic requirements for IoT applications.This paper proposes an architecture of the Internet of Things system in a multi-domain scenario to solve the problem of resource fragmentation caused by the closure of traditional IoT architectures,and to realize the open sharing of IoT resources.Aiming at the problems of closed,tightly coupled,and poorly scalable traditional IoT architectures,related technologies such as IoT identification and edge cloud computing are analyzed.Based on the related standards of WoT architecture,a multi-domain scenario MWoT(Multi-Domain Web of Things)is proposed.The architecture enables cross-domain sharing of IoT resources and cross-domain collaboration of services.In terms of resource sharing across domains,a resource identification method based on Web characteristics is proposed.A resource-oriented,loosely coupled RESTful WebService is used to abstract massive heterogeneous resources in the Internet of Things into a unified resource model and uniquely identify them,mask differences in resources of each domain,realize unified management of heterogeneous resources,and provide support for cross-domain sharing of resources.In terms of service cross-domain collaboration,a service discovery and management approach for multi-domain scenarios is proposed to integrate the IoT services of each domain to provide unified interface services.The upper application is interface-oriented and loosely coupled with heterogeneous resources.Open communication channels between applications to achieve interoperability between applications.Aiming at the problem of leakage of user privacy due to the openness of the MWoT architecture,an MWoT rights management framework is proposed to implement fine-grained control of access rights to various domains through platform,subdomain,and user triple authentication and authorization mechanisms to protect user privacy and data.Security;Aiming at the problems of intrusion difficult to find and difficult to locate due to the large number of MWoT architecture modules,the paper proposes a method of intrusion detection and response based on machine learning,real-time discovery of system intrusion behavior and intelligent decision-making to improve the operation and maintenance efficiency,intrusion detection accuracy averaged 97% for different IoT scenarios.Based on the above technologies and methods,a multi-domain MWoT architecture is designed and implemented,and a MicroThings open sharing platform is developed.A single domain can support mega-level device access.The platform has been applied to smart parks,smart granaries,Smart traffic and other industries have verified the practicality of the technologies and methods studied.