Transmission-Aware Bandwidth Variable Transceiver Allocation in DWDM Optical Networks

TL;DR

This paper proposes a transmission-aware transceiver allocation method for flexible optical networks that optimizes bandwidth variable transceivers considering noise and interference, improving throughput and spectrum efficiency.

Contribution

It introduces a novel heuristic approach for BVTRX allocation considering amplifier noise and nonlinear interference, with improved network throughput and spectrum utilization.

Findings

Enhanced network throughput and spectrum utilization in early planning periods.

Reduced number of BV-TRXs in later periods compared to recent algorithms.

Up to 25% transceiver savings and 50% spectrum savings with regenerator placement.

Abstract

This paper addresses the transmission-aware transceiver allocation problem of flexible optical networks for a multi-period planning. The proposed approach aims at assigning the best configuration of bandwidth variable transceivers (BVTRX) considering the amplifier noise and nonlinear channel interferences using the incoherent Extended Gaussian Noise (EGN) model. The proposed solution improves the network throughput and spectrum utilization in the early planning periods and allocates lower number of BV-TRXs in later periods in comparison to algorithms presented recently. A heuristic approach to regenerator placement has also been applied achieving up to 25% transceiver and 50% spectrum utilization savings in comparison to configurations without regenerators.