Techno-Economic and Feasibility Study of Point-to-Multipoint Communications in the Metro-Core

We investigate the introduction of point-to-multipoint (P2MP) transceivers in a realistic scenario inspired by the structure of real metro-regional DWDM networks. By establishing light-trees to aggregate traffic from multiple nodes towards the metro-core and backbone, we investigate how P2MP can complement existing point-to-point (P2P) architectures in reducing the number of required transceivers while optimizing the optical signal-to-noise ratio (OSNR) budget. Our analysis of light-tree construction in relation to the available OSNR budget of the traffic aggregation nodes demonstrates that the efficient deployment of P2MP transceivers can significantly reduce reliance on P2P connections and lower overall transceiver costs, particularly when the OSNR is sufficient to support light-tree lengths of approximately 120 km.