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Overlay Virtualized Wireless Sensor Networks for Application in Industrial Internet of Things: A Review

1
Department of Electrical and Electronic Engineering Science, University of Johannesburg, Auckland Park, Johannesburg 2006, South Africa
2
Department of Computer Science, City University of Hong Kong, Kowloon Tong, Hong Kong, China
3
Department of Electrical, Electronic and Computer Engineering, University of Pretoria, Pretoria 0002, South Africa
4
Modelling and Digital Science, Council for Scientific and Industrial Research, Pretoria 0001, South Africa
5
Office of the Deputy Vice-Chancellor: Research and Internationalisation, University of Johannesburg, Johannesburg 2006, South Africa
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(10), 3215; https://doi.org/10.3390/s18103215
Received: 13 July 2018 / Revised: 8 August 2018 / Accepted: 8 August 2018 / Published: 23 September 2018
(This article belongs to the Special Issue Smart Industrial Wireless Sensor Networks)
In recent times, Wireless Sensor Networks (WSNs) are broadly applied in the Industrial Internet of Things (IIoT) in order to enhance the productivity and efficiency of existing and prospective manufacturing industries. In particular, an area of interest that concerns the use of WSNs in IIoT is the concept of sensor network virtualization and overlay networks. Both network virtualization and overlay networks are considered contemporary because they provide the capacity to create services and applications at the edge of existing virtual networks without changing the underlying infrastructure. This capability makes both network virtualization and overlay network services highly beneficial, particularly for the dynamic needs of IIoT based applications such as in smart industry applications, smart city, and smart home applications. Consequently, the study of both WSN virtualization and overlay networks has become highly patronized in the literature, leading to the growth and maturity of the research area. In line with this growth, this paper provides a review of the development made thus far concerning virtualized sensor networks, with emphasis on the application of overlay networks in IIoT. Principally, the process of virtualization in WSN is discussed along with its importance in IIoT applications. Different challenges in WSN are also presented along with possible solutions given by the use of virtualized WSNs. Further details are also presented concerning the use of overlay networks as the next step to supporting virtualization in shared sensor networks. Our discussion closes with an exposition of the existing challenges in the use of virtualized WSN for IIoT applications. In general, because overlay networks will be contributory to the future development and advancement of smart industrial and smart city applications, this review may be considered by researchers as a reference point for those particularly interested in the study of this growing field. View Full-Text
Keywords: Internet of Things; WSN virtualization; overlay WSN; Industrial Internet-of-Things (IIoT) Internet of Things; WSN virtualization; overlay WSN; Industrial Internet-of-Things (IIoT)
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Nkomo, M.; Hancke, G.P.; Abu-Mahfouz, A.M.; Sinha, S.; Onumanyi, A.J. Overlay Virtualized Wireless Sensor Networks for Application in Industrial Internet of Things: A Review. Sensors 2018, 18, 3215.

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