Improved access point selection

14 years 3 months ago
Improved access point selection
This paper presents Virgil, an automatic access point discovery and selection system. Unlike existing systems that select access points based entirely on received signal strength, Virgil scans for all available APs at a location, quickly associates to each, and runs a battery of tests to estimate the quality of each AP's connection to the Internet. Virgil also probes for blocked or redirected ports, to guide AP selection in favor of preserving application services that are currently in use. Results of our evaluation across five neighborhoods in three cities show Virgil finds a usable connection from 22% to 100% more often than selecting based on signal strength alone. By caching AP test results, Virgil both improves performance and success rate. Our overhead is acceptable and is shown to be faster than manually selecting an AP with Windows XP. Categories and Subject Descriptors C.2.3 [Computer-Communication Networks]: Network Operations--Network management, Public networks ; C.2....
Anthony J. Nicholson, Yatin Chawathe, Mike Y. Chen
Added 24 Dec 2009
Updated 24 Dec 2009
Type Conference
Year 2006
Authors Anthony J. Nicholson, Yatin Chawathe, Mike Y. Chen, Brian D. Noble, David Wetherall
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