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OLT can correctly predict the upper edge and down edge of the packet that reached by DBA GRANT by reshaping all packets arriving and buffed in queues in a cycle during ONU idle time. By adjusting the last GRANT to reach the nearest edge of the packet, all USRs are not only eliminated, but also the whole USR size is reduced, the average cycle length and the average GRANT are kept unchanged, the available...
It predicts the traffic for many POLLING cycles through the prediction function of interpolation polynomial constructed by the REPORTs of many key POLLING cycles, and grants many POLLING cycles at a time. Not only can it save bandwidth, but also it reduces the delay of all data packages. The simulation results verify its merits well.
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