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Heuristic polling sequence to enhance sleep count of EPON

  • Bhargav Ram RayapatiEmail author
  • Nakkeeran Rangaswamy
Research Article

Abstract

Next-generation passive optical networks (PONs) demand power conservation to create a green environment. A reduction in power consumption of the traditional Ethernet passive optical network (EPON) can be achieved by increasing the sleep count in optical network units (ONUs). In this paper, this is accomplished by introducing a first-in-last-out (FILO) polling sequence in the place of a fixed polling sequence to increase the number of ONUs entering sleep mode (sleep count). In a fixed polling sequence, the optical line terminal (OLT) allocates idle time to the ONUs based on the overall load of the ONUs. This leads to a situation that whenever the idle time does not meet the wakeup time threshold of sleep mode, the ONUs are put into doze/active mode, which consumes more power. In the FILO polling sequence, the first polled ONU in the current cycle is made to be polled last in the following cycle. Polling continues in this way, and by this rearrangement, the idle time of delayed poll ONUs increases; hence, it helps to reduce the power consumption. Additionally, a modified load adaptive sequence arrangement (MLASA) method is suggested, where the ONUs are categorized into doze ONUs and sleep ONUs. A numerical simulation of the FILO polling sequence with a vertical cavity surface emitting laser (VCSEL) ONU shows a maximum reduction in power consumption of 15.5 Wand a 20% improvement in energy savings compared with the traditional fixed polling sequence. The MLASA method results in better power consumption with minimum delay than that of the proposed FILO and existing LASA methods.

Keywords

Ethernet passive optical network (EPON) optical network unit (ONU) polling sequence power conservation 

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References

  1. 1.
    Baliga J, Ayre R, Hinton K, Sorin W V, Tucker R S. Energy consumption in optical IP networks. Journal of Lightwave Technology, 2009, 27(13): 2391–2403CrossRefGoogle Scholar
  2. 2.
    Kramer G. Ethernet Passive Optical Networks. Ontario: McGraw-Hill, 2005Google Scholar
  3. 3.
    Li Z, Yi L, Hu W. Key technologies and system proposals of TWDM-PON. Frontiers of Optoelectronics, 2013, 6(1): 46–56CrossRefGoogle Scholar
  4. 4.
    Kramer G, Pesavento G. Ethernet passive optical network (EPON): building a next-generation optical access network. IEEE Communications Magazine, 2002, 40(2): 66–73CrossRefGoogle Scholar
  5. 5.
    Systems DITU-T G Suppl. 45. 45: 2009Google Scholar
  6. 6.
    Wong E, Mueller M, Dias M P I, Chan C A, Amann M C. Energy-efficiency of optical network units with vertical-cavity surface-emitting lasers. Optics Express, 2012, 20(14): 14960–14970CrossRefGoogle Scholar
  7. 7.
    Zhang L, Yu C, Guo L, Liu Y. Energy-saving mechanism based on double-sleep-state algorithm and dynamic double-threshold receiver selection in EPON. Optik (Stuttgart), 2013, 124(18): 3655–3664CrossRefGoogle Scholar
  8. 8.
    Li C, Guo W, Hu W, Xia M. Energy-efficient dynamic bandwidth allocation for EPON networks with sleep mode ONUs. Optical Switching and Networking, 2015, 15: 121–133CrossRefGoogle Scholar
  9. 9.
    Liu C P, Wu H T, Ke K W. The QoS provisioning tri-mode energy saving mechanism for EPON networks. Photonic Network Communications, 2017, 33(1): 26–38CrossRefGoogle Scholar
  10. 10.
    Newaz S H S, Cuevas A, Lee G M, Crespi N, Choi J K. Evaluating energy efficiency of ONUs having multiple power levels in TDM-PONs. IEEE Communications Letters, 2013, 17(6): 1248–1251CrossRefGoogle Scholar
  11. 11.
    Nikoukar A, Hwang I S, Liem A T, Wang C J. QoS-aware energyefficient mechanism for sleeping mode ONUs in enhanced EPON. Photonic Network Communications, 2015, 30(1): 59–70CrossRefGoogle Scholar
  12. 12.
    Aslam B R, Mahdaliza I S, Naseer Q K, Shah P M A, Zulkifli N. An energy efficient cyclic sleep control framework for ITU PONs. Optical Switching and Networking, 2018, 27: 7–17CrossRefGoogle Scholar
  13. 13.
    Hwang I S, Nikoukar A, Su Y M, Liem A T. Decentralized SIEPON-based ONU-initiated Tx/TRx energy-efficiency mechanism in EPON. Journal of Optical Communications and Networking, 2016, 8(4): 238–248CrossRefGoogle Scholar
  14. 14.
    Butt R A, Waqar A M, Faheem M, Idrus S M. Processing efficient frame structure for passive optical network (PON). Optical Switching and Networking, 2018, 30: 85–92CrossRefGoogle Scholar
  15. 15.
    Van D P, Valcarenghi L, Dias MP, Kondepu K, Castoldi P, Wong E. Energy-saving framework for passive optical networks with ONU sleep/doze mode. Optics Express, 2015, 23(3): A1–A14CrossRefGoogle Scholar
  16. 16.
    Lv Y, Jiang N, Qiu K, Xue C. Energy-efficient load adaptive polling sequence arrangement scheme for passive optical access networks. Journal of Optical Communications and Networking, 2015, 7(6): 516–524CrossRefGoogle Scholar
  17. 17.
    Tan Z, Yang C, Wang Z. Energy evaluation for cloud RAN employing TDM-PON as front-haul based on a new network traffic modeling. Journal of Lightwave Technology, 2017, 35(13): 2669–2677CrossRefGoogle Scholar
  18. 18.
    Kantarci B, Mouftah H. Energy efficiency in the extended-reach fiber-wireless access networks. IEEE Network, 2012, 26(2): 28–35CrossRefGoogle Scholar
  19. 19.
    Shi L, Mukherjee B, Lee S S. Energy-efficient PON with sleepmode ONU: progress, challenges, and solutions. IEEE Network, 2012, 26(2): 36–41CrossRefGoogle Scholar
  20. 20.
    Garfias P, De Andrade M, Tornatore M, Buttaboni A, Sallent S, Gutiérrez L. Energy-saving mechanism in WDM/TDM-PON based on upstream network traffic. Photonics, 2014, 1(3): 235–250CrossRefGoogle Scholar
  21. 21.
    Dixit A, Lannoo B, Colle D, Pickavet M, Demeester P. ONU power saving modes in next generation optical access networks: progress, efficiency and challenges. Optics Express, 2012, 20(26): B52–B63CrossRefGoogle Scholar
  22. 22.
    Pham V D, Valcarenghi L, Chincoli M, Castoldi P. Experimental evaluation of a sleep-aware dynamic bandwidth allocation in a multi-ONU 10G-EPON testbed. Optical Switching and Networking, 2014, 14: 11–24CrossRefGoogle Scholar
  23. 23.
    Dourado D M, Ferreira R J L, de Lacerda R M, Duarte U R. Energy consumption and bandwidth allocation in passive optical networks. Optical Switching and Networking, 2018, 28: 1–7CrossRefGoogle Scholar
  24. 24.
    Wong S W, Valcarenghi L, Yen S H, Campelo D R, Yamashita S, Kazovsky L. Sleep mode for energy saving PONs: advantages and drawbacks. In: Proceedings of IEEE Globecom Workshop. Honolulu: IEEE, 2009, 1–6Google Scholar
  25. 25.
    Dias M P I, Wong E. Performance evaluation of VCSEL ONU using energy-efficient just-in-time dynamic bandwidth allocation algorithm. In: Proceedings of Photonics Global Conference (PGC). Singapore: IEEE, 2012Google Scholar
  26. 26.
    Dias M P I, Wong E. Sleep/doze controlled dynamic bandwidth allocation algorithms for energy-efficient passive optical networks. Optics Express, 2013, 21(8): 9931–9946CrossRefGoogle Scholar
  27. 27.
    Mcgarry M P, Reisslein M, Aurzada F, Scheutzow M. Shortest propagation delay (SPD) first scheduling for EPONs with heterogeneous propagation delays. Journal on Selected Areas in Communications, 2010, 28(6): 849–862CrossRefGoogle Scholar
  28. 28.
    Hunsperger R G. Distributed-Feedback Lasers. In: Integrated Optics. Berlin: Springer, 1995, 226–243CrossRefGoogle Scholar
  29. 29.
    Li J, Zhong Z, Hua N, Zheng X, Zhou B. Balancing energy efficiency and device lifetime in TWDM-PON under traffic fluctuations. IEEE Communications Letters, 2017, 21(9): 1981–1984CrossRefGoogle Scholar
  30. 30.
    Rayapati B R, Rangaswamy N. Adaptive scheduling mechanism with variable bit rate traffic in EPON. Journal of Optical Communications, 2019, doi:10.1515/joc-2018-0219Google Scholar
  31. 31.
    Frigui N E, Lemlouma T. Optimization of the upstream bandwidth allocation in passive optical networks using internet users’ behavior forecast. In: Proceedings of 22nd International Conference on Optical Network Design and Modeling. Dublin: HAL, 2018, 59–64Google Scholar
  32. 32.
    Buttaboni A, De Andrade M, Tornatore M A. Multi-threaded dynamic bandwidth and wavelength allocation scheme with void filling for long reach WDM/TDM PONs. Journal of Lightwave Technology, 2013, 31(8): 1149–1157CrossRefGoogle Scholar
  33. 33.
    Mercian A, McGarry M P, Reisslein M. Offline and online multithread polling in long-reach PONs: a critical evaluation. Journal of Lightwave Technology, 2013, 31(12): 2018–2028CrossRefGoogle Scholar

Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electronics EngineeringPondicherry UniversityPondicherryIndia

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