Cross-layer static resource provisioning for dynamic traffic in flexible grid optical networks
Journal article, 2021

Flexible grid networks need rigorous resource planning to avoid network over-dimensioning and resource over-provisioning. The network must provision the hardware and spectrum resources statically, even for dynamic random bandwidth demands, due to the infrastructure of flexible grid networks, hardware limitations, and reconfiguration speed of the control plane. We propose a flexible online–offline probabilistic (FOOP) algorithm for the static spectrum assignment of random bandwidth demands. The FOOP algorithm considers the probabilistic nature of random bandwidth demands and balances hardware and control plane pressures with spectrum assignment efficiency. The FOOP algorithm uses the probabilistic spectrum Gaussian noise (PSGN) model to estimate the physical-layer impairment (PLI) for random bandwidth traffic. Compared to a benchmark spectrum assignment algorithm and a widely applied PLI estimation model, the proposed FOOP algorithm using the PSGN model saves up to 49% of network resources.

Computational modeling


Probabilistic logic


Optical fiber networks


Heuristic algorithms


Yuxin Xu

Zhejiang University of Technology

Erik Agrell

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Maite Brandt Pearce

University of Virginia

Journal of Optical Communications and Networking

1943-0620 (ISSN)

Vol. 13 3 1-13

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Other Physics Topics

Computer Science



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