A student from Duke University claims to have come up with a way to double a smartphone's battery life by intelligently using Wi-Fi networks more efficiently.
According to Justin Manweiler, the battery life of a smartphone can be dramatically increased by using a more efficient method of connecting to Wi-Fi networks. When there are more devices connected to a Wi-Fi network, each device has to use more energy and battery power to transmit data and access the internet. The system devised by Manweiler will detect when there are other Wi-Fi devices in the area and will put the connection to sleep on dormant devices, while the active smartphone uses the Wi-Fi network. This is said to save battery life on both the smartphone that is sleeping, and the one that is using the Wi-Fi network.
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Manweiler claims that this "napping" system, which he calls SleepWell, has negligible effects on performance, since each device has a more efficient connection when it is being used. "The SleepWell-enabled WiFi access points can stagger their activity cycles to minimally overlap with others, ultimately resulting in promising energy gains with negligible loss of performance," said the university student.
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Since battery technology has lagged behind the other advances made in wireless communications and devices in recent years, we are happy to see any sort of advancement on this front that would allow us to get more battery life out of our constantly-used smartphones and devices. Maybe one day we won't have to carry around a bag full of batteries to make it through the day, but that just might be too hopeful.
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