[summ]Energy saving-Switching 3G_Wi-Fi_GPS

yzhsuper

于 2012-08-14 18:22:27 发布

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分类专栏： network comms

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本文提出了一种针对移动设备的节能框架，通过高效利用GPS、3G及Wi-Fi等不同接口来实现。该方案主要原理是在不需要高精度定位的情况下放弃使用能耗较高的GPS，转而采用预测方式以降低能耗。

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J. Ryoo, H. Kim, and S. R. Das, “Geo-fencing: Geographical-fencing based energy-aware proactive framework for mobile devices,” in 2012 IEEE 20th International Workshop on Quality of Service (IWQoS), 2012, pp. 1 –9.

This paper proposes an energy-aware framework for mobile devices by efficiently use different interfaces, i.e. GPS, 3G, Wi-Fi.

Principle/Inspiration: using prediction instead of demanding the highest accuracy can save significant energy. Give up using GPS when it is not necessary. [e.g. GPS gives high accuracy with high energy cost]

Steps:

1. when user's current location is obtained by GPS, then turn off GPS and switch on 3G or Wi-Fi

2. predict human activity (walking, driving, stationary, etc) using Accelerometer.

Additional works: shows an example of how to build an energy profile, which is better than using fluctuate real values