Towards a Fundamental Understanding of the Stability and Delay of Offline WDM EPONs

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Executive Summary

The fundamental stability limit and packet delay characteristics of offline scheduling, an elementary scheduling mechanism in recently proposed dynamic bandwidth allocation mechanisms for Ethernet Passive Optical Networks (EPONs) with Wavelength Division Multiplexing (WDM), are unknown. For Poisson packet traffic and gated grant sizing, the authors develop an analytical framework for characterizing the stability limit and packet delay of offline scheduling in WDM EPONs. They consider two reporting strategies: immediate reporting, whereby the report is immediately attached to an upstream data transmission, and synchronized reporting, where all reports are sent at the end of a polling cycle.

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