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The existing energy saving algorithms are implemented only with one kind of Passive Optical Network (PON). However, as far as Ethernet PON (EPON), good performances can not be reached simultaneously in both 10G-EPON and 1G-EPON. 10G-EPON can provide higher throughput and lower delay than 1G-EPON, but it consumes more energy. Therefore, to obtain trade-off performances, the authors propose a new Energy Saving Mechanism based on Sleep mode and Dynamic double-threshold link selection (ESM-SD) with the combination of 1G-EPON and 10G-EPON techniques. In ESM-SD, the downstream link can be switched between 1Gbps and 10Gbps according to dynamic double-threshold link selection.
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