Novel impairment-aware resource allocation scheme for elastic optical networks serving traffic with different service priorities

In this research paper, we propose a novel impairment-aware resource allocation scheme that increases spectrum efficiency of an elastic optical network (EON), while satisfying the quality of transmission (QoT) requirements of traffic connections with different service priorities (i.e., high and low priority traffic). To demonstrate the validity and superiority of our algorithm, we compared the results of our proposed resource allocation scheme against a benchmark algorithm. The results were simulated for a 6-node network and a 14-node network. Compared to the benchmark algorithm, on average, our proposed scheme increases spectrum efficiency by an additional 20% while ensuring a minimum latency for high priority traffic, causing minimum disruptions to existing low priority traffic, and blocking less than 1% of the total connections.