FRT-SDN: an effective firm real time routing for SDN by early removal of late packets

Shahrzad Sedaghat () and Amir Hossein Jahangir ()
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Shahrzad Sedaghat: Sharif University of Technology
Amir Hossein Jahangir: Sharif University of Technology

Telecommunication Systems: Modelling, Analysis, Design and Management, 2022, vol. 80, issue 3, No 5, 359-382

Abstract: Abstract On-time delivery of network flows is crucial to ensure the quality of service of deadline-constrained applications. Today, real time applications have various uses in multimedia communications, the Internet of Things (IoT), and 5G (5th generation mobile network) technology. In Software Defined Network (SDN) architecture, the controller has a global view of the network. Hence, it is possible to enrich the features of the controller and/or forwarding devices to support real time communication. In this paper, we propose a firm real time software-defined approach (FRT-SDN) for real time communication and present a novel solution for the real time forwarding/routing of time-sensitive applications in SDN. To this end, FRT-SDN divides traffic into real time and non-real-time flows, prematurely drops late packets that probably miss their deadlines according to a four-stage mathematical modeling, and uses adaptive multipath routing, Earliest Deadline First (EDF) scheduling algorithm, and prioritized queues. We evaluate FRT-SDN with the Mininet tool. Emulation results show that FRT-SDN yields a 23–97% improvement in deadline hit ratio and an 88% decrease in the end-to-end delay and jitter. Hence, it effectively enhances the timeliness of the network. On the other hand, based on the correlation coefficient concept, the effect of network parameters on the average deadline hit ratio has been measured.

Keywords: Software defined network; Real time routing; Analytical modeling; EDF; Adaptive multipath routing (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11235-022-00913-2

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