Hello. I have found link to this article in ACM Technews - newsletter pointing to interesting research sent to ACM members. It looks like power saving requires support from device and access point, but IMO it is interesting piece of research. OTOH I am not network specialists - hope this will help with MeeGo power management.
Regards. How Wi-Fi Drains Your Cell Phone Technology Review (06/24/10) Simonite, Tom Researchers at the University of Texas at Austin (UTA), University of Wisconsin-Madison, and Microsoft have developed NAPman, a system that modifies the software running on Wi-Fi access points to extend cell phones' battery life. The researchers began by benchmarking how much power different cell phones need to use Wi-Fi. "We found that an HTC Tilt's total power consumption increases by threefold when using Wi-Fi," says UTA's Eric Rozner. NAPman enforces a first-come, first-served approach to all data, whether it is from a device using a power saving mode or not. It also only wakes a phone to retrieve its data when that data is at the front of the queue, preventing the phone from waiting and wasting energy. The system also tracks devices that go to sleep after a fixed time so they are not sent data while asleep. "Not only could we provide 70 percent energy savings compared to the conventional implementation, but NAPman is fair to background traffic," Rozner says. In one test, NAPman doubled the device's battery life from 4.7 to 10 hours. http://www.technologyreview.com/communications/25651/?a=f -- Tomasz Rybak <[email protected]> GPG/PGP key ID: 2AD5 9860 Fingerprint A481 824E 7DD3 9C0E C40A 488E C654 FB33 2AD5 9860 http://member.acm.org/~tomaszrybak
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