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    • 2. 发明公开
    • 위치 표지 데이터베이스와 서버, 위치 표지 데이터베이스구축 방법 및 이것을 이용한 위치 기반 서비스
    • 位置信标数据库和服务器,建立位置信息数据库的方法和使用位置的服务
    • KR1020070120085A
    • 2007-12-21
    • KR1020077012128
    • 2005-10-28
    • 스카이후크 와이어리스, 인크.
    • 모간에드워드제임스알리자데-사브디츠파시드존러셀킵션마이클조지
    • H04B7/26H04L12/28G06F15/16
    • H04W64/003G01S5/02G01S5/0205G01S5/021G01S5/0226G01S5/0242G01S5/0252G01S5/0284G01S19/13G01S19/14G01S19/46G06Q10/0875G08G1/20H04W4/02H04W16/18H04W24/00H04W48/08H04W48/16H04W64/00H04W84/10H04W84/12H04W88/06H04W88/08Y10S707/99936
    • A location beacon database and server, method of building location beacon database, and location based service using same. Wi-Fi access points are located in a target geographical area to build a reference database of locations of Wi-Fi access points. At least one vehicle is deployed including at least one scanning device having a GPS device and a Wi-Fi radio device and including a Wi-Fi antenna system. The target area is traversed in a programmatic route to avoid arterial bias. The programmatic route includes substantially all drivable streets in the target geographical area and solves an Eulerian cycle problem of a graph represented by said drivable streets. While traversing the target area, periodically receive the GPS coordinates of the GPS device. While traversing the target area, detecting Wi-Fi signals from Wi-Fi access points in range of the Wi-Fi device and recording identity information of the detected Wi-Fi access point in conjunction with GPS location information of the vehicle when the detection of the Wi-Fi access point was made. The location information is used to reverse triangulate the position of the detected Wi-Fi access point; and the position of the detected access point is recorded in a reference database. A user-device having a Wi-Fi radio may be located. A reference database of calculated locations of Wi-Fi access points in a target area is provided. In response to a user application request to determine a location of a user-device having a Wi-Fi radio, the Wi-Fi device is triggered to transmit a request to all Wi-Fi access points within range of the Wi-Fi device. Messages are received from the Wi-Fi access points within range of the Wi-Fi device, each message identifying the Wi-Fi access point sending the message. The signal strength of the messages received by the Wi-Fi access points is calculated. The reference database is accessed to obtain the calculated locations for the identified Wi-Fi access points. Based on the number of Wi-Fi access points identified via received messages, choosing a corresponding location-determination algorithm from a plurality of location-determination algorithms, said chosen algorithm being suited for the number of identified Wi-Fi access points. The calculated locations for the identified Wi-Fi access points and the signal strengths of said received messages and the chosen location-determination algorithm are used to determine the location of the user-device. The database may be modified with newly added position information to improve quality of previously determined positions, and error prone information is avoided.
    • 位置信标数据库和服务器,建立位置信标数据库的方法和使用其的基于位置的服务。 Wi-Fi接入点位于目标地理区域,以构建Wi-Fi接入点位置的参考数据库。 部署至少一个车辆,包括具有GPS装置和Wi-Fi无线电装置的至少一个扫描装置并且包括Wi-Fi天线系统。 目标区域以编程路线运行,以避免动脉偏倚。 该程序路线基本上包括目标地理区域中的所有可驱动的街道,并且解决了由所述可驱动的街道表示的图形的欧拉循环问题。 在穿过目标区域时,周期性地接收GPS设备的GPS坐标。 当穿过目标区域时,从Wi-Fi设备的范围内的Wi-Fi接入点检测Wi-Fi信号,并且当检测到Wi-Fi设备的GPS位置信息时,结合GPS位置信息来记录检测到的Wi-Fi接入点的身份信息 Wi-Fi接入点已经建成。 位置信息用于反转三角测量检测到的Wi-Fi接入点的位置; 并且检测到的接入点的位置被记录在参考数据库中。 可以定位具有Wi-Fi无线电的用户设备。 提供了目标区域中Wi-Fi接入点的计算位置的参考数据库。 响应于确定具有Wi-Fi无线电的用户设备的位置的用户应用请求,Wi-Fi设备被触发以向Wi-Fi设备的范围内的所有Wi-Fi接入点发送请求。 从Wi-Fi设备范围内的Wi-Fi接入点接收消息,每个消息标识发送消息的Wi-Fi接入点。 计算由Wi-Fi接入点接收的消息的信号强度。 访问参考数据库以获得所识别的Wi-Fi接入点的计算位置。 基于通过接收到的消息识别的Wi-Fi接入点的数量,从多个位置确定算法中选择相应的位置确定算法,所选择的算法适用于识别的Wi-Fi接入点的数量。 用于所识别的Wi-Fi接入点的计算的位置和所述接收到的消息的信号强度以及所选择的位置确定算法用于确定用户设备的位置。 可以用新添加的位置信息来修改数据库,以改善先前确定的位置的质量,并且避免出错的信息。