Title :
A note on the potential energy savings by extending the average cycle times in Passive Optical Networks
Author :
Hernández, José Alberto ; Seoane, Isaac ; Romeral, Ricardo ; Larrabeiti, David
Abstract :
This article proposes a mechanism to increase the energy efficiency of the upstream channel in TDM-base PONs. Essentially, the ONUs are encouraged to accumulate traffic and transmit data bursts just by increasing the cycle time values artificially. The guard time is enlarged to avoid the case where ONUs are queried by the OLT and have none or few packets to transmit, thus allowing more time to sleep until the next cycle time. This strategy has however the downside effect of a substantial increase in the queueing delay experienced by packets. We provide a basic analysis to maximise the power savings for a given average delay target experienced by the packets.
Keywords :
energy conservation; passive optical networks; queueing theory; telecommunication channels; telecommunication traffic; time division multiplexing; OLT; ONU; TDM-base PON; average cycle time; cycle time value; data burst transmission; energy efficiency; energy saving; optical network unit; passive optical network; power saving; queueing delay; traffic; upstream channel; Bandwidth; Delay; Optical network units; Passive optical networks; Power demand; Steady-state; Time division multiplexing;
Conference_Titel :
Networks and Optical Communications (NOC), 2012 17th European Conference on
Conference_Location :
Vilanova i la Geltru
Print_ISBN :
978-1-4673-0949-3
Electronic_ISBN :
978-1-4673-0950-9
DOI :
10.1109/NOC.2012.6249923
