Just-in-Time Scheduling for Multichannel EPONs

The authors investigate Optical Network Unit (ONU) grant scheduling techniques for multichannel Ethernet Passive Optical Networks (EPONs), such as Wavelength Division Multiplexed (WDM) EPONs. They take a scheduling theoretic approach to solving the grant scheduling problem. They introduce a two-layer structure of the scheduling problem and investigate techniques to be used at both layers. They present an extensive ONU grant scheduling simulation study that provides: insight into the nature of the ONU grant scheduling problem and indication of which scheduling techniques are best for certain conditions.