The document discusses using unused TV spectrum, known as TV white spaces, for unlicensed wireless devices. It notes that while spectrum sensing technology has shown promise in the lab for identifying vacant TV channels, field tests so far indicate the technology is not reliable enough. Two proposals aim to break the political logjam around this issue - one separates devices into low-power ones using spectrum sensing and higher-power ones using geolocation databases, while another calls for all devices to use geolocation databases. The transition to digital TV in early 2009 adds urgency to resolving these issues.

1. UHF TV White Space --A New Challenge for Spectrum Managers Annual Meeting, National Spectrum Managers Association Arlington, VA May 20-21, 2008 Paul Henry AT&T Labs – Research Middletown, NJ [email_address]

2. Underutilized Spectrum Can ‘white space’ spectrum be successfully managed ?

4. Available Spectrum (after Digital TV transition in Feb 2009) *6 MHz/channel

14. Thank you!