Dynamic Resource Allocation in Coherent DSCM PON for Mobile Fronthaul with Different Functional Splits

Considering the expected heterogeneity of future mobile fronthauling scenarios in terms of capacity, latency, and geographical density, flexibility becomes a crucial factor in utilizing network resources. Therefore, we propose an integer linear programming model for the dynamic allocation of subcarriers in the upstream coherent passive optical networks, by leveraging digital subcarrier multiplexing to accommodate 5G/6G mobile fronthauling demands. The model specifically considers the requirements of the low-layer functional splits 7.1 and 7.2, while integrating frequency-domain hybrid-modulation to accommodate the varying conditions of optical network units. This approach enables efficient and flexible resource allocation in heterogeneous fronthauling environments.