fybrrLink: Efficient QoS-aware Routing in SDN enabled Next-Gen Satellite Networks

TL;DR

This paper introduces fybrrLink, a centralized QoS-aware routing algorithm for SDN-enabled satellite networks that improves path computation efficiency and adapts to satellite topology for enhanced internet service.

Contribution

The paper presents a novel QoS-aware routing algorithm for SDN satellite networks, utilizing modified algorithms and topology monitoring for improved performance.

Findings

fybrrLink outperforms existing algorithms in simulation tests.

The approach reduces computation time for path finding.

It effectively manages QoS requirements in satellite networks.

Abstract

Providing high-speed Internet service using satellite network has attracted researchers from both academia and industry mainly due to the characteristics of Low Earth Orbit (LEO) satellite networks such as global coverage, scalability, and lower transmission delay. With the recent advancements in the Software-Defined Network (SDN), implementation of SDN in Non-Terrestrial Networks (NTN) can help to achieve the set goals for 5G and beyond networks. Since satellite networks have a distinct architecture, some of the traditional protocols no longer remain useful. Therefore, to satisfy the diverse Quality of Service (QoS) requirements for a variety of applications, we propose a novel and centralized QoS-aware routing algorithm, called fybrrLink in which the global view of the network in SDN is utilized. We implement a modified Bresenham's algorithm and Dijkstra's algorithm to find the optimal path in a significantly reduced computation time. Also, taking advantage of the deterministic satellite constellation, we propose a flow rule transfer algorithm and a topology monitoring algorithm. Further, fybrrLink is evaluated with multiple NS3 simulations, and results confirm its supremacy over other state-of-the-art algorithms.