Invention Grant
US09392407B2 Method and system for selecting and providing a relevant subset of wi-fl location information to a mobile client device so the client device may estimate its position with efficient utilization of resources 有权
用于向移动客户端设备选择和提供wi-fl位置信息的相关子集的方法和系统,使得客户端设备可以有效利用资源来估计其位置

Method and system for selecting and providing a relevant subset of wi-fl location information to a mobile client device so the client device may estimate its position with efficient utilization of resources
Abstract:
In one embodiment, when it is determined that one or more Wi-Fi positioning system (WPS) tiles that are necessary to estimate a location of a mobile client device are not present in a WPS tile store on the mobile client device, or are present in the WPS tile store on the mobile client device but out of date, one or more new WPS tiles are requested from a remote server. Each WPS tile is a set of Wi-Fi access point data for Wi-Fi access points within a bounded geographical region. The one or more new WPS tiles are received from the remote server, and are cached in the WPS tile store on the mobile client device. Subsequent to the caching, one or more further locations of the mobile client device are estimated autonomously from the remote server, utilizing Wi-Fi access point data in the WPS tile store.
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