The Energy Efficient Internet Project

Project partners:

(for NSF CNS-0519951)

(for NSF CNS-0721858)

Project funding:

This project is focused on reducing the energy use of the Internet and the hosts that connect to it. Specifically, this project has addressed reducing both direct energy use of network links and induced energy use of network-connected hosts. To date, this project has pioneered new ideas in reducing energy use of Ethernet links, exposing power state of network equipment, and employing proxying to allow network-connected hosts to sleep when idle. Future plans include modeling of multimedia content distribution, studying how to reduce energy use of targeted services in enterprise networks, and other topics.

Significant outcomes and events:

  • A provisional patent filing was made in February 2012 for "Apparatus and Method for Automatically Selecting the Optimal Local Communications Channel from a Plurality of Channels" by Ingo McLean, Mehgran Mostowfi, and Ken Christensen.

  • "Reduing Plug Load in Office Buildings" was presented on YouTube in 2011 by Rual Viera (undergraduate research student), see here.

  • "Hybrid Web Server" was presented on YouTube in 2011 by Matt Olson (undergraduate research student), see here.

  • A special guest-edited issue of IEEE Network magazine on Energy-Efficient Networks is forthcoming in early to mid 2011. Guest editors are Juergen Quittek, Ken Christensen, and Bruce Nordman.

  • The First International Workshop on Green Communications was organized as part of ICC 2009. Ken Christensen is one of the four organizers of this workshop that is continuing as the Fourth International Workshop on Green Communications in Kyoto, Japan as part of ICC 2011.

  • The notion of a power state MIB developed as part of this project was presented to the IETF in 2009 by Juergen Quittek, see here. This helped lead to the foundation of the Energy Management Working Group.

  • The "SIP Catcher" was presented on YouTube in 2008 by Miguel Jimeno (PhD student), see here.

  • This project was awarded the 2008 State of Florida "Excellence in Sustainability through Information Technology" award by ITFlorida.

  • The EPA EPA Energy Star Program Requirements for Computers, Version 5.0 now states that "Proxying refers to a computer that maintains Full Network Connectivity as defined in Section 1 of this specification. For a system to qualify under the proxying weightings above, it must meet a non-proprietary proxying standard that has been approved by the EPA and the European Union as meeting the goals of ENERGY STAR.".

  • An Ecma task group TC38-TG4 - Proxying Support for Sleep Modes was created with the scope of "Network proxying of ICT devices to reduce energy consumption" with work to include "To develop Standards and Technical Reports for network proxying; a proxy is an entity that maintains network presence for a sleeping higher-power ICT device." The standard (1st edition) is now complete and is available here. Our work contributed to this standard.

  • An IEEE 802.3 Energy Efficient Ethernet Study Group was established in November 2006 and is now the IEEE 802.3az Task Force. IEEE 802.3az Energy Efficient Ethernet (EEE) was standardized in September 2010. EEE is based on Low Power Idle (LPI). Our early ideas in Adaptive Link Rate (ALR) were instrumental in kicking-off the EEE effort, see here.

  • The UPnP Forum released standardized service descriptions for Low Power V1.0 in August 2007. This includes a UPnP proxy to which we made contributions (see here). Jakob Klamra (visiting student from Lund University, Sweden) is specifically listed as a contributor on the UPnP Forum standard.

The contact for this project is Ken Christensen at the University of South Florida.

The development of this material is based upon work supported by the National Science Foundation under grant CNS-0520081 (Christensen, USF), CNS-0519951 (George/Gordon-Ross, UF), and CNS-0721858 (Christensen, USF). Any opinions, findings and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflects the views of the National Science Foundation (NSF).
Last update on March 4, 2012