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    • 53. 发明授权
    • Optimizing caching period of location data for network based location services
    • 优化基于网络的位置服务的位置数据的缓存周期
    • US08131818B2
    • 2012-03-06
    • US12629539
    • 2009-12-02
    • Mark D. NielsenSri RamanathanMatthew A. TerryMatthew B. Trevathan
    • Mark D. NielsenSri RamanathanMatthew A. TerryMatthew B. Trevathan
    • G06F17/30G06N5/02
    • H04W4/025H04L67/2852
    • A system and associated method for optimizing caching period of location data for network based location services. A location caching server receives a location request from a mobile device. The location caching server calculates, pursuant to a predefined calculation rule, a caching period of a location cache entry for the mobile device based on a precision level requested by the mobile device and a service precision level assigned for a type of location service for which the location request was made. The location caching server obtains real location data of the mobile device of the calculated caching period is expired. The location caching server subsequently adjusts the caching period based on a distance traveled by the mobile device pursuant to a predefined adjustment rule, and updates the location cache entry.
    • 一种用于优化基于网络的位置服务的位置数据的缓存周期的系统和相关方法。 位置缓存服务器从移动设备接收位置请求。 位置高速缓存服务器根据预定义的计算规则,根据移动设备请求的精度等级,计算移动设备的位置高速缓存条目的缓存周期,以及为一类位置服务分配的服务精度级别, 已提出位置要求。 位置缓存服务器获取计算的缓存期间的移动设备的真实位置数据已过期。 位置缓存服务器随后根据预定义的调整规则根据移动设备行进的距离来调整缓存周期,并更新位置缓存条目。