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公开(公告)号：US20140315583A1
公开(公告)日：2014-10-23
申请号：US14358236
申请日：2012-11-16
Inventor： Lei Yin
CPC classification number: H04W64/006 , G01C21/30 , G01S5/0294 , H04W4/027
Abstract: Provided are a positioning method and system based on a position prefetching. The method comprises: S1, receiving positioning request information about a terminal, determining the position and moving trajectory of the terminal; S2, calculating a predicted trajectory according to the moving trajectory and road network information; S3, receiving the positioning request information about the terminal at a deviation correcting point, and determining the moving direction and moving speed of the terminal in accordance with the position of the deviation correcting point and the trajectory; and S4, to prefetch the predicted trajectory of the terminal in the moving direction for positioning according to the moving direction and moving speed of the terminal. When a positioning signal cannot be obtained, the positioning method and system provided by the present invention provide a positioning service through prefetched position information, increase the success rate of positioning, correct the prefetched positioning information, and increase the positioning accuracy and positioning speed c.
Abstract translation: 提供基于位置预取的定位方法和系统。 该方法包括：S1，接收关于终端的定位请求信息，确定终端的位置和移动轨迹; S2，根据移动轨迹和道路网信息计算预测轨迹; S3，在偏差校正点处接收关于终端的定位请求信息，并且根据偏差校正点和轨迹的位置确定终端的移动方向和移动速度; 和S4，以根据终端的移动方向和移动速度来预取移动方向上的终端的预测轨迹以进行定位。 当无法获得定位信号时，本发明提供的定位方法和系统通过预取位置信息提供定位服务，提高定位成功率，校正预取定位信息，提高定位精度和定位速度。
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公开(公告)号：US09107181B2
公开(公告)日：2015-08-11
申请号：US14358236
申请日：2012-11-16
Inventor： Lei Yin
CPC classification number: H04W64/006 , G01C21/30 , G01S5/0294 , H04W4/027
Abstract: Provided are a location-based positioning method and system. The method comprises the following steps. A positioning request is received from a terminal and a location and a moving trajectory of the terminal are determined. A predicted trajectory is calculated according to the moving trajectory and road network information. A positioning request is received from the terminal at a position correction point, and a moving direction and a moving speed of the terminal is received in accordance with a location of the position correction point and the predicted trajectory. A next location of the terminal in the determined moving direction is determined based on the predicted trajectory.
Abstract translation: 提供了一种基于位置的定位方法和系统。 该方法包括以下步骤。 从终端接收定位请求，确定终端的位置和移动轨迹。 根据移动轨迹和道路网信息计算预测轨迹。 在位置校正点从终端接收定位请求，并且根据位置校正点和预测轨迹的位置接收终端的移动方向和移动速度。 基于预测的轨迹确定终端在确定的移动方向上的下一个位置。
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