Dynamic Wavelength, Priority and Bandwidth Assignment (DWPBA) for Long-Reach Hybrid WDM/TDM-PON Based on Multi-thread Scheduling

摘要

With the advances in optical technology, the span of the Passive Optical Network (PON) has been increased from the standard 20km to 100km. Wavelength-division multiplexing (WDM) has been recognized as the key technology in the next generation flexible and scalable passive optical network. WDM/time-division multiplexing (TDM)-PON is one of the candidates, which combine the WDM and TDM technology. In this paper, we propose an efficient DWPBA for Long-Reach hybrid WDM/TDM-PON by separating the Data and REPORT messages under multi-thread scheduling. We compare our proposed algorithm with the traditional algorithm, and show its advantages on packet delay. The results demonstrate that the DWPBA algorithm achieves high channel utilization and low packet delay when fiber length increased to 100 km. Begin the abstract two lines below author names and addresses. The abstract summarizes key findings in the paper. It is a paragraph of 250 words or less. For the keywords, select up to 8 key terms for a search on your manuscript's subject.