Power Management for Universal Plug and Play

1
Power Management for Universal Plug and Play
Jakob Klamra and Martin Olsson Department of
Communication Systems Lund Institute of
Technology Lund, Sweden

• Introduction
• Problem increased energy use by IT equipment
• More devices in households
• IT equipment use is 280 kWh/year per US household
• Adds up to about 2.24 billion per year
• Problem IT equipment is always on, even when
  idle
• Always on is required by some protocols
• Universal Plug and Play (UPnP) requires this
• Problem of induced energy use is addressed
• A power management proxy for UPnP in investigated
• Overview of UPnP
• UPnP is for automatic device configuration
• Network analogy of Microsoft plug-and-play

• Implementation of proxy
• Microsoft Windows XP application written in C
• Device cache contains all devices in the network
• Proxy cache contains all sleeping devices in the
  network
• Threads for listening to traffic and updating the
  caches
• See Figure 4
• Implementation tested with a variety of UPnP
  devices
• Intel UPnP tools used for developing proxies and
  services
• Expected energy savings
• Use of UPnP and stocks of devices predicted for
  2008
• Predictions for notebooks, desktops, and laser
  printers
• Energy consumption in sleep and on state
  predicted
• See Table 1 (data from B. Nordman and A. Meier,
• Energy Consumption of Home Information

Ken Christensen Department of Computer Science
and Engineering University of South
Florida Tampa, Florida, USA
Bruce Nordman Energy Analysis Department Lawrence
Berkeley National Laboratory Berkeley,
California, USA
SNCNW 2005 Halmstad (November 2005)