Robust QoT Assured Resource Allocation in Shared Backup Path Protection Based EONs
Venkatesh Chebolu, Sadananda Behera, Goutam Das

TL;DR
This paper presents a robust optimization framework for resource allocation in elastic optical networks that ensures quality-of-transmission under physical impairments and failures, improving survivability and QoT guarantees.
Contribution
It introduces a MILP-based robust optimization model and a novel impairment-aware algorithm with a new sorting technique for enhanced QoT assurance in EONs.
Findings
Achieved around 40% more QoT guaranteed requests in simulations.
First use of bitloading technique for spectrum allocation in survivable EONs.
Proposed SBPP-IA algorithm outperforms existing algorithms in QoT parameters.
Abstract
Survivability is mission-critical for elastic optical networks (EONs) as they are expected to carry an enormous amount of data. In this paper, we consider the problem of designing shared backup path protection (SBPP) based EON that facilitates the minimum quality-of-transmission (QoT) assured allocation against physical layer impairments (PLIs) under any single link/shared risk link group (SRLG) failure for static and dynamic traffic scenarios. In general, the effect of PLIs on lightpath varies based on the location of failure of a link as it introduces different active working and backup paths. To address these issues in the design of SBPP EON, we formulate a mixed integer linear programming (MILP) based robust optimization framework for static traffic with the objective of minimizing overall fragmentation. In this process, we use the efficient bitloading technique for spectrum…
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Taxonomy
TopicsOptical Network Technologies · Advanced Optical Network Technologies · Advanced Photonic Communication Systems
