Scalable deterministic scheduling for WDM slot switching Xhaul with zero-jitter

A low-cost WDM slot switching “N-GREEN” network is studied for the Xhaul application. We assess the impact of inter-slot intervals on the jitter in N-GREEN and propose a deterministic scheduler ensuring a zero-jitter performance as needed by CPRI traffic. The scheduling is then implemented in the form of an Integer Linear Program and as a scalable heuristic, and these tools are used for the evaluation of the scheduler performances. The results show important savings and improvements in cost, energy consumption, latency and jitter using N-GREEN w.r.t. state-of-the-art Ethernet Xhaul.