Fascinating! They used Android as the test bed, but say that it's the apps, not the OS that matters.
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They have developed a tool that helps app developers figure out when their apps really need full power connections (download speeds of around 7.1 Mbits/sec) or when the app can get by on a proposed "intermediate state" which consumes half the power and transmits less data at a slower speed, typically by sharing a low-speed channel, (often 16 kbps).
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for example, the researchers found that when they ran Pandora for 12 minutes, the app conducted a series "of short bursts once every 62.5 seconds ... While the music itself was sent simply and efficiently as a single file, the periodic audience measurements—each constituting only 2KBs or so—were being transmitted at regular 62.5-second intervals. The constant cycle of ramping up to full power (2 seconds to ramp up, 1 second to download 2KB) and back to idle (17 seconds for the two tail times ... was extremely wasteful," they wrote.
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http://www.networkworld.com/communit...e-apps?hpg1=bn