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A Power-Efficient Scheme for Outdoor Localization
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DOI：10.1007/978-3-319-60033-8_46.png)
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With the extensive use of smart phones, location-based services are becoming prevalent. Global Positioning System (GPS) is a widely-adopted localization method. However, it drains the battery of smart phones quickly and it is vulnerable to weak GPS signals. GSMbased localization is more robust, but it only leads to low localization precision, which cannot meet the requirements of many location-based services. With the pervasive deployment of WiFi, WiFi-based localization has become a promising indoor localization method. Nevertheless, simply applying indoor localization methods to outdoor metropolitan environments does not work well. In this paper, we present a hybrid outdoor localization scheme, which leverages WiFi signals and the built-in sensors in smart phones to achieve high localization precision and low power consumption. Our experimental results show that the proposed hybrid scheme outperforms the widely-adopted GPS method in terms of localization precision and power consumption.
Keyword:
Outdoor localization
Power efficiency
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