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Open AccessArticle

A Cloud-based Middleware for Self-Adaptive IoT-Collaboration Services

by Soojin Park 1 and Sungyong Park 2,*
1
Graduate School of Management of Technology, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 04107, Korea
2
Department of Computer Science and Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 04107, Korea
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(20), 4559; https://doi.org/10.3390/s19204559
Received: 15 September 2019 / Revised: 18 October 2019 / Accepted: 18 October 2019 / Published: 20 October 2019
(This article belongs to the Special Issue Internet of Things Middleware Platforms and Sensing Infrastructure)
The middleware framework for IoT collaboration services should provide efficient solutions to context awareness and uncertainty issues among multiple collaboration domains. However, existing middleware frameworks are mostly limited to a single system, and developing self-adaptive IoT collaboration services using existing frameworks requires developers to take considerable time and effort. Furthermore, the developed IoT collaboration services are often dependent on a particular domain, which cannot easily be referenced in other domains. This paper proposes a cloud-based middleware framework that provides a set of cloud services for self-adaptive IoT collaboration services. The proposed middleware framework is generic in the sense that it clearly separates domain-dependent components from the layers that leverage existing middleware frameworks. In addition, the proposed framework allows developers to upload domain-dependent components onto the cloud, search for registered components, and launch Virtual Machine (VM) running a new MAPE cycle via a convenient web-based interface. The feasibility of the proposed framework has been shown with a simulation of an IoT collaboration service that traces a criminal suspect. The performance evaluation shows that the proposed middleware framework runs with an overhead of only 6% compared to pure Java-based middleware and is scalable as the number of VMs increases up to 16. View Full-Text
Keywords: internet of things; self-adaptation; middleware platform; cloud service internet of things; self-adaptation; middleware platform; cloud service
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Park, S.; Park, S. A Cloud-based Middleware for Self-Adaptive IoT-Collaboration Services. Sensors 2019, 19, 4559.

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