OSA's Digital Library

Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 6 — Jun. 1, 2012
  • pp: 449–456

Design of Energy-Saving Algorithms for Hybrid Fiber Coaxial Networks Based on the DOCSIS 3.0 Standard

Zuqing Zhu  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 4, Issue 6, pp. 449-456 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (1138 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We propose energy-saving algorithms to improve the energy efficiency of hybrid fiber coaxial (HFC) networks that support DOCSIS (Data Over Cable Service Interface Specification) 3.0 standard. The algorithms incorporate a traffic-aware approach and modify the operation statuses of the two primary network elements, the cable modem (CM) and the cable modem termination system (CMTS), dynamically. For the CM-side operation, we first propose a basic algorithm that can optimize the CMs’ energy efficiency, regardless of significant increase of the packet delay and the number of operation changes (NoOC). We then propose two modified approaches to reduce the packet delay and NoOC while saving energy. Simulations with these algorithms show 37.5%–42.2% energy saving on the CM side, compared to the traditional case where the CMs’ operation statuses are static. Next, we propose a CMTS-side energy-saving algorithm to find the actual connection mapping between the CM channels and CMTS ports. The proposed algorithm tries to support CM connections with minimal numbers of CMTS ports. To further improve the energy efficiency of the CMTS, we design a readjustment approach that can reorganize CM connections on CMTS ports based on their loads. Simulation results show that 31.08%–32.61% energy saving can be achieved on the CMTS in total. Hence, the proposed algorithms achieve effective energy saving on both the CM and CMTS sides.

© 2012 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4256) Fiber optics and optical communications : Networks, network optimization

ToC Category:
Research Papers

Original Manuscript: September 28, 2011
Revised Manuscript: January 21, 2012
Manuscript Accepted: April 24, 2012
Published: May 10, 2012

Zuqing Zhu, "Design of Energy-Saving Algorithms for Hybrid Fiber Coaxial Networks Based on the DOCSIS 3.0 Standard," J. Opt. Commun. Netw. 4, 449-456 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. L. Valcarenghi, I. Cerutti, P. Castoldi, “Energy efficient optical access and metro networks,” in Proc. of ICTON 2010, 2010.
  2. C. Lauge, A. Gladisch, “On the energy consumption of FTTH access networks,” in Proc. of OFC 2009, Mar. 2009.
  3. O. Blume, D. Zeller, U. Barth, “Approaches to energy efficient wireless access networks,” in Proc. of ISCCSP 2010, Mar. 2010, pp. 1–5.
  4. P. Tsiaflakis, “Green DSL: energy-efficient DSM,” in Proc. of ICC 2009, June 2009, pp. 1–5.
  5. S. Wong, L. Valcarenghi, S. Yen, D. Campelo, S. Yamashita, L. Kazovsky, “Sleep mode for energy saving PONs: advantages and drawbacks,” in Proc. of GLOBECOM 2009, Dec. 2009, pp. 1–5.
  6. P. Chowdhury, M. Tornatore, S. Sarkar, B. Mukherjee, “Building a green wireless-optical broadband access network (WOBAN),” J. Lightwave Technol., vol. 28, pp. 2219–2229, 2010. [CrossRef]
  7. J. R. Hsieh, T. Lee, Y. Kuo, “Energy-efficient multi-polling scheme for wireless LANs,” IEEE Trans. Wireless Commun., vol. 8, pp. 1532–1541, 2009. [CrossRef]
  8. K. Christensen, P. Reviriego, B. Nordman, M. Bennett, M. Mostowfi, J. Maestro, “IEEE 802.3az: the road to energy efficient Ethernet,” IEEE Commun. Mag., vol. 48, pp. 50–56, 2010.
  9. http://en.wikipedia.org/wiki/Hybrid_fibre-coaxial.
  10. http://www.cablelabs.com/.
  11. Z. Zhu, “A novel energy-aware design to build green broadband cable access networks,” IEEE Commun. Lett., vol. 15, pp. 887–889, 2011. [CrossRef]
  12. Z. Zhu, “Design green hybrid fiber-coaxial networks: a traffic-aware and cooperative approach,” in Proc. of ICC 2012, June 2012, pp. 1–5.
  13. P. Reviriego, K. Christensen, J. Rabanillo, J. Maestro, “An initial evaluation of energy efficient Ethernet,” IEEE Commun. Lett., vol. 15, pp. 578–580, 2011. [CrossRef]
  14. M. Garcia, D. Garcia, V. Garcia, R. Bonis, “Analysis and modeling of traffic on a hybrid fiber-coax network,” IEEE J. Sel. Areas Commun., vol. 22, pp. 1718–1730, 2004. [CrossRef]
  15. S. Kirkpatrick, C. Gelatt, M. Vecchi, “Optimization by simulated annealing,” Science, vol. 220, pp. 671–680, 1983. [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited