Abstract
The number of smart cities is increasing rapidly around the world with the continuous increase of governments’ interest in exploiting Information and Communication Technologies (ICT) to solve issues arising from rapid urbanization. Most smart city services rely fundamentally on ubiquitous sensing, enabled by Wireless Sensor Network (WSN) technologies. However, WSNs in smart cities are naturally vulnerable to unavoidable external challenges like storms, fires, and other natural disasters. Such challenges pose a great threat to smart city infrastructure, including WSNs, as they might affect network connectivity or result in complete blockages of network services. However, some particular smart city services are critical, to the point where they must remain available in all situations, especially during disasters; to monitor the disaster and obtain sensory information needed for controlling it, limiting its danger, or for decision-making during rescue operations. Thus, it is crucial to design a smart-city network to maintain connectivity against such challenges. In this paper, we introduce MPResiSDN, a MultiPath Resilient routing system based on Software Defined Networking (SDN). The system introduced exploits SDN’s capabilities and aided-multipath routing to reactively provide connectivity in smart city networks in the presence of challenges. We evaluated our proposed system under simulations of different natural disasters. The results demonstrate that the system improved data delivery under the challenges by as much as 100% compared to the Spanning Tree Protocol when a suitable value for k diverse paths was selected.
Highlights
Introduction and MotivationsIn the last few decades, the number of people who live in cities has increased dramatically
This paper introduces an Software Defined Networking (SDN)-based multipath routing scheme, which we refer to as MPResiSDN, that aims to improve the resilience of Wireless Sensor Network (WSN) in smart cities
The results of applying the evaluation methodology described in Section 5 to our proposed MPResiSDN scheme are presented and discussed
Summary
In the last few decades, the number of people who live in cities has increased dramatically. The nature of the distributed routing implemented in WSNs makes it difficult to update routing tables quickly and effectively This problem can be solved by utilizing Softwaredefined Networking (SDN). This paper introduces an SDN-based multipath routing scheme, which we refer to as MPResiSDN, that aims to improve the resilience of WSNs in smart cities. The proposed scheme implements a multipath-aided strategy to achieve better routing in case of natural challenges Implementing this scheme would help rescue efforts, save people’s lives, and limit property damage in case of natural disasters, because it enhances the availability of current and correct sensory information that is used by survivability applications in smart cities to make decisions.
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