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    • 2. 发明申请
    • METHODS AND SYSTEMS FOR RETRIEVING AND CACHING GEOFENCE DATA
    • 用于检索和缓存地理数据的方法和系统
    • WO2013181441A3
    • 2014-05-22
    • PCT/US2013043434
    • 2013-05-30
    • QUALCOMM INC
    • BILANGE ERIC PPERRY-PELLETIER ADAM WDAMM GARY GHEIDT IAN RRUOTSI WENDELL
    • H04W4/02G06F17/30H04L29/08H04W4/18
    • G06F12/0866G01C21/32G01C21/3407H04L67/04H04L67/2852H04L67/289H04W4/021H04W4/026H04W4/027H04W4/18
    • Mobile device systems and methods for monitoring geofences cache a subset of geofences within a likely travel perimeter determined based on speed and direction of travel, available roads, current traffic, etc. A server (102) may download to mobile devices (124) subsets of geofences within a likely travel perimeter determined based on a threshold travel time possible from a current location given current travel speed, direction and roads. Mobile device (124) may receive a list of local geofences from a server (102), which may maintain or have access to a database (106) containing all geofences. The mobile device (124) may use the cashed geofences in the normal manner, by comparing its location to the cached list of local geofences to detect matches. In an embodiment, the mobile device (124) may calculate or receive from the server (102) an update perimeter, which when crossed may prompt the mobile device (124) to request an update to the geofences stored in cache.
    • 用于监测地理围栏的移动设备系统和方法在基于旅行的速度和方向,可用道路,当前流量等确定的可能行进周界内缓存地理围栏的子集。服务器(102)可以下载到移动设备(124)的子集 根据当前行驶速度,方向和道路,可以根据当前位置可能的阈值行驶时间确定可能行驶周界内的地质围栏。 移动设备(124)可以从服务器(102)接收本地地理围栏的列表,其可以维护或访问包含所有地理围栏的数据库(106)。 移动设备(124)可以通过将其位置与本地地理围栏的高速缓存列表进行比较来以正常方式使用兑现地理围栅以检测匹配。 在一个实施例中,移动设备(124)可以从服务器(102)计算或接收更新周界,更新周界当交叉时可以提示移动设备(124)请求对存储在高速缓存中的地理围栏的更新。