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Design and analysis of novel SDN-controlled dynamically reconfigurable TDM-DWDM-based optical network for smart cities

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Abstract

With the increasing bandwidth requirements in smart cities, high-capacity optical networks featuring ultrahigh bandwidths have become a necessity. The currently existing static and dynamic optical networks cannot efficiently optimize network resources and do not support intelligent decision making for smart cities, rendering them energy inefficient. The software-defined networking (SDN) controller in these networks also requires intelligent algorithms that can optimize network resources based on bandwidth requirements. We have designed a novel SDN-controlled dynamically reconfigurable time division multiplexing and dense wavelength-division multiplexing-based optical network for smart cities, which maximizes the utilization of network resources, making it energy efficient. To further empower the decision-making capabilities of the SDN controller, three novel algorithms are proposed: inter-application wavelength redirection with ROADM, dynamic load balancing, and bandwidth selection with resource allocation based on the different bandwidth requirements of primary and secondary applications. These algorithms sense the free bandwidth in primary applications and then assign this free bandwidth to secondary applications accordingly. The proposed SDN controller determines the best algorithm that optimally utilizes the network resources and routes the traffic through it. The performance of the designed optical network for a smart city is analyzed in terms of different performance parameters such as the bandwidth satisfaction rate, timing diagrams, eye diagrams, bit error rate, and quality factor. The proposed algorithms prove instrumental in the more efficient utilization of network resources, ensuring the maintenance of the required quality of service. This holistic proposed system addresses the unique challenges posed by smart cities, emphasizing energy efficiency and intelligent decision-making within the dynamic landscape of high-capacity optical networks.

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Acknowledgements

The authors would like to thank the “Research project grant to the faculty of DTU” under Delhi Technological University for its financial support of this work under file no. DTU/Council/BOM-AC/Notification/31/2018/5738. The authors would also like to thank the anonymous reviewers for the feedback.

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  1. Delhi Technological University, Delhi, India

    Garima Singh & Gurjit Kaur

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  1. Garima Singh
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  2. Gurjit Kaur
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Correspondence to Gurjit Kaur.

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Singh, G., Kaur, G. Design and analysis of novel SDN-controlled dynamically reconfigurable TDM-DWDM-based optical network for smart cities. Photon Netw Commun (2024). https://doi.org/10.1007/s11107-023-01012-1

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