Asymmetrical PON with multiple return channels

Details Asymmetrical PON with multiple return channels Asymmetrical PON with multiple return channels

2007-02-21

2011-11-01

Li, Shi K (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S066000, C398S069000, C398S071000, C398S050000, C370S270000, C370S468000, C370S466000, C370S252000

Reexamination Certificate

active

08050561

ABSTRACT:
A passive optical network (PON) system comprising a plurality of optical network units (ONUs) having one downstream receiver and one upstream transmitter, an optical line terminal (OLT) having a downstream transmitter and a plurality of upstream receivers, wherein each upstream receiver is associated with a subset of the ONUs, and an optical distribution network (ODN) that connects the OLT to the ONUs is disclosed. An OLT for a PON, comprising a downstream transmitter, and a plurality of upstream receivers, wherein a downstream transmitter bandwidth is greater than each upstream receiver bandwidth is also disclosed. A network component comprising a processor configured to implement a method comprising determining a downstream bandwidth and an upstream bandwidth for a PON, and increasing a number of upstream channels per downstream channel for the PON when asymmetry between the downstream bandwidth and the upstream bandwidth is greater than a threshold amount is also disclosed.

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