Low-Latency Transmission of Fronthaul Traffic over XG(S)-PON with Fixed-Elastic Bandwidth Reservations

Exploiting flexible functional split in converged software defined access networks

“…DBA schemes are based on report-grant mechanisms and, although more efficient in terms of bandwidth utilization, are not suitable for lower layer FS options requiring less than 250 µ s delay. Fixed Bandwidth Allocation (FBA) represents a feasible solution to guarantee low latency [32], [33]. Moreover, [34], [35] evaluate experimentally the effect on the fronthaul latency that lower-layer FS options can tolerate when the PONbased fronthaul is utilized with DBA enabled/disabled at OLT.…”