Communications of the ACM
Wi-Fi 'napping' Doubles Phone Battery Life
With SleepWell, graduate student Justin Manweiler would like to teach cell phones to take turns when sharing bandwidth.
Photo courtesy of Duke University
Duke University researchers have developed SleepWell, software that can double the battery life of mobile devices by making changes to Wi-Fi technology.
SleepWell enables mobile devices to go into sleep mode to save power while neighboring devices download information, which saves energy for the sleeping device as well as competing devices. "The SleepWell-enabled Wi-Fi access points can stagger their activity cycles to minimally overlap with others, ultimately resulting in promising energy gains with negligible loss of performance," says Duke graduate student Justin Manweiler, who developed the software with Duke professor Romit Roy Choudhury.
"The SleepWell system can certainly be an important upgrade to Wi-Fi technology, especially in the light of increasing Wi-Fi density," Choudhury says. Manweiler says "the testing we conducted across a number of device types and situations gives us confidence that SleepWell is a viable approach for the near future."
From Duke Today
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