Impairment-aware resource allocation scheme for elastic optical networks with different service priorities

Today, elastic optical networks (EONs) are required to accommodate traffic with different service priorities. For example, mission-critical applications such as industrial internet, smart grids, and remote surgery require an ultra-reliable low-latency communication system. The novel impairment-aware resource allocation scheme proposed here prioritises traffic. It satisfies the quality and latency requirements of mission-critical traffic while causing minimum disruptions to other forms of low-priority traffic connections. The results obtained for 6-node and 14-node networks under various traffic distribution environments indicate that the proposed algorithm achieves higher spectral efficiency, reduces spectrum fragmentation, and causes minimal disruptions over the benchmark algorithm.