公开(公告)号：US09510319B2

公开(公告)日：2016-11-29

申请号：US14565878

申请日：2014-12-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sthanunathan Ramakrishnan ,  Sashidharan Venkatraman ,  Ravi Krishna Bhat ,  Jaiganesh Balakrishnan ,  Saket Thukral

IPC: H04W64/00

CPC classification number: H04W64/006 ,  H04W84/12

Abstract: Several methods and systems for location estimation are disclosed. In an embodiment, the method includes performing a primary wireless scan to identify a first set of access points at a user location associated with a first user location estimate. A secondary wireless scan is performed at pre-defined time intervals subsequent to the primary wireless scan. A set of access points is identified corresponding to each secondary wireless scan. The method further comprises detecting a presence or an absence of user motion based on a number of shared access points between the first set of access points and a set of access points corresponding to each secondary wireless scan. A current user location is estimated to be the first user location estimate if the user motion is detected to be absent, or a second user location estimate computed based on geolocation signals if the user motion is detected to be present.

Abstract translation: 公开了几种用于位置估计的方法和系统。 在一个实施例中，该方法包括执行主无线扫描以识别与第一用户位置估计相关联的用户位置处的第一组接入点。 在主要无线扫描之后，以预定义的时间间隔执行辅助无线扫描。 与每个次级无线扫描相对应的一组接入点。 该方法还包括基于第一组接入点与对应于每个辅助无线扫描的一组接入点之间的共享接入点的数量来检测用户运动的存在或不存在。 如果检测到用户运动不存在，估计当前用户位置是第一用户位置估计，或者如果检测到用户运动存在，则基于地理位置信号计算的第二用户位置估计。

公开(公告)号：US20160174185A1

公开(公告)日：2016-06-16

申请号：US14565878

申请日：2014-12-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sthanunathan Ramakrishnan ,  Sashidharan Venkatraman ,  Ravi Krishna Bhat ,  Jaiganesh Balakrishnan ,  Saket Thukral

IPC: H04W64/00

CPC classification number: H04W64/006 ,  H04W84/12

Abstract: Several methods and systems for location estimation are disclosed. In an embodiment, the method includes performing a primary wireless scan to identify a first set of access points at a user location associated with a first user location estimate. A secondary wireless scan is performed at pre-defined time intervals subsequent to the primary wireless scan. A set of access points is identified corresponding to each secondary wireless scan. The method further comprises detecting a presence or an absence of user motion based on a number of shared access points between the first set of access points and a set of access points corresponding to each secondary wireless scan. A current user location is estimated to be the first user location estimate if the user motion is detected to be absent, or a second user location estimate computed based on geolocation signals if the user motion is detected to be present.

Abstract translation: 公开了几种用于位置估计的方法和系统。 在一个实施例中，该方法包括执行主无线扫描以识别与第一用户位置估计相关联的用户位置处的第一组接入点。 在主要无线扫描之后，以预定义的时间间隔执行辅助无线扫描。 与每个次级无线扫描相对应的一组接入点。 该方法还包括基于第一组接入点与对应于每个辅助无线扫描的一组接入点之间的共享接入点的数量来检测用户运动的存在或不存在。 如果检测到用户运动不存在，估计当前用户位置是第一用户位置估计，或者如果检测到用户运动存在，则基于地理位置信号计算的第二用户位置估计。