公开(公告)号：US09179248B2

公开(公告)日：2015-11-03

申请号：US13846917

申请日：2013-03-18

Applicant: MCUBE, INC.

Inventor： Joseph M. Kelly ,  John E. Acheson

IPC: H04W4/02 ,  H04W64/00 ,  G01S5/14

CPC classification number: H04W4/02 ,  G01S5/14 ,  H04W64/00 ,  Y02D70/1246 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164

Abstract: A computer-implemented method and device for determining a user position, implemented in a user handheld computing device programmed to perform the method. The method includes solving for the position of a user based on ranges, which are computed by estimating power loss between a user and a number of Wi-Fi Access Points. Embodiments of the present invention includes a method that is designed to accommodate the non-linear nature of solving a position solution using power estimates. This method includes solving a two-dimensional solution grid of position residuals, or magnitudes of error between true and computed ranges, using signal strength measurements from multiple Wi-Fi access points in order to determine local minima of the position residuals indicating a user position. Standard approaches in the area such as a Least Squares Solution overly simplify the non-linear components resulting in poor performance.

Abstract translation: 一种用于确定用户位置的计算机实现的方法和装置，其在被​​编程为执行所述方法的用户手持计算设备中实现。 该方法包括基于通过估计用户与多个Wi-Fi接入点之间的功率损耗来计算的范围来解决用户的位置。 本发明的实施例包括一种被设计为适应使用功率估计求解位置解的非线性特性的方法。 该方法包括使用来自多个Wi-Fi接入点的信号强度测量来求解位置残差的二维解网格或真实和计算范围之间的误差大小，以便确定指示用户位置的位置残差的局部最小值。 最小二乘解决方案中的标准方法过度简化了非线性元件，导致性能不佳。

公开(公告)号：US20130244692A1

公开(公告)日：2013-09-19

申请号：US13846917

申请日：2013-03-18

Applicant: MCUBE, INC.

Inventor： Joseph M. Kelly ,  John E. Acheson

IPC: H04W4/02

CPC classification number: H04W4/02 ,  G01S5/14 ,  H04W64/00 ,  Y02D70/1246 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164

Abstract: A computer-implemented method and device for determining a user position, implemented in a user handheld computing device programmed to perform the method. The method includes solving for the position of a user based on ranges, which are computed by estimating power loss between a user and a number of Wi-Fi Access Points. Embodiments of the present invention includes a method that is designed to accommodate the non-linear nature of solving a position solution using power estimates. This method includes solving a two-dimensional solution grid of position residuals, or magnitudes of error between true and computed ranges, using signal strength measurements from multiple Wi-Fi access points in order to determine local minima of the position residuals indicating a user position. Standard approaches in the area such as a Least Squares Solution overly simplify the non-linear components resulting in poor performance.

Abstract translation: 一种用于确定用户位置的计算机实现的方法和装置，其在被​​编程为执行所述方法的用户手持计算设备中实现。 该方法包括基于通过估计用户与多个Wi-Fi接入点之间的功率损耗来计算的范围来解决用户的位置。 本发明的实施例包括一种被设计为适应使用功率估计求解位置解的非线性特性的方法。 该方法包括使用来自多个Wi-Fi接入点的信号强度测量来求解位置残差的二维解网格或真实和计算范围之间的误差大小，以便确定指示用户位置的位置残差的局部最小值。 最小二乘解决方案中的标准方法过度简化了非线性元件，导致性能不佳。