Title :
Dynamic wavelength and bandwidth allocation versus OSU-ONU cyclic sleep in TWDM-PONs: an experimental evaluation
Author :
Kondepu, Koteswararao ; Valcarenghi, Luca ; Castoldi, Piero
Author_Institution :
Scuola Superiore Sant´Anna, Pisa, Italy
Abstract :
In this paper, a dynamic wavelength and bandwidth allocation with only Tuning ONU Buffering (DWBA-TOB) scheme and an OSU-ONU Synchronous Cyclic Sleep (OOCS) sleep scheme are compared as alternative methods for improving Optical Line Termination (OLT) energy efficiency. Experimental results show that, if ONUs are slow tuning devices and reconfigurations are frequent, the OOCS scheme outperforms DWBA-TOB scheme in terms of both the average frame delay and the average energy savings.
Keywords :
bandwidth allocation; passive optical networks; time division multiplexing; wavelength division multiplexing; DWBA-TOB scheme; OLT energy efficiency; OOCS sleep scheme; OSU-ONU synchronous cyclic sleep; TWDM-PON; average energy savings; average frame delay; dynamic wavelength and bandwidth allocation with only tuning ONU buffering; optical line termination; Delays; Logic gates; Optical buffering; Optical network units; Passive optical networks; Switching circuits; Tuning; Cyclic Sleep; DWBA; Energy Savings; TWDM PONs;
Conference_Titel :
Optical Network Design and Modeling (ONDM), 2015 International Conference on
Conference_Location :
Pisa
DOI :
10.1109/ONDM.2015.7127292
