公开(公告)号：WO2013131077A3

公开(公告)日：2013-10-31

申请号：PCT/US2013028817

申请日：2013-03-04

Applicant: TELECOMM SYSTEMS INC

Inventor： HUGIE RICK ,  LAU JOSIAH ,  PHALKE SEEMA ,  FERGUSON ED

IPC: G08B21/00

CPC classification number: H04W4/021 ,  G01S5/0278 ,  G01S19/48 ,  H04W24/00

Abstract: A least squares geofence method that introduces inventive geofence steps and modifies existing geofence steps to minimize trigger misfires caused by data variability and location blunders and to minimize delayed/missed entry triggers generated under urban and/or indoor conditions. The least squares geofence method periodically retrieves sample locations for a target wireless device to determine that device's geographic location and to evaluate a corresponding side condition. Sample locations retrieved with accuracies greater than 1km are filtered. If a potential change in side condition is detected for a given device, the least squares geofence method retrieves five fast location fixes for that device and evaluates a weighted least squares (LS) location estimate based on sample locations retrieved. A LS location estimate is then filtered according to an anticipated trigger event and the least squares geofence method evaluates a final geofence side condition based on the LS location estimate previously computed.

Abstract translation: 引入创造性地理围栏步骤并修改现有地理围栏步骤以最小化由数据可变性和位置失误引起的触发失火并最小化在城市和/或室内条件下产生的延迟/遗漏进入触发的最小二乘地理围栏方法。 最小平方地理围栏方法周期性地检索目标无线设备的样本位置以确定该设备的地理位置并评估相应的边界条件。 对精度大于1km的样本位置进行过滤。 如果对于给定设备检测到副边条件的潜在变化，最小平方地理围栏方法为该设备检索五个快速定位，并基于检索到的样本位置评估加权最小二乘（LS）位置估计。 然后根据预期的触发事件过滤LS位置估计，并且最小二乘地理围栏方法基于先前计算的LS位置估计来评估最终的地理围栏侧条件。

公开(公告)号：CA2866496A1

公开(公告)日：2013-09-06

申请号：CA2866496

申请日：2013-03-04

Applicant: TELECOMM SYSTEMS INC

Inventor： HUGIE RICK ,  LAU JOSIAH ,  PHALKE SEEMA ,  FERGUSON ED

IPC: G08B21/00 ,  G08B21/18 ,  H04W4/02

Abstract: A least squares geofence method that introduces inventive geofence steps and modifies existing geofence steps to minimize trigger misfires caused by data variability and location blunders and to minimize delayed/missed entry triggers generated under urban and/or indoor conditions. The least squares geofence method periodically retrieves sample locations for a target wireless device to determine that device's geographic location and to evaluate a corresponding side condition. Sample locations retrieved with accuracies greater than 1km are filtered. If a potential change in side condition is detected for a given device, the least squares geofence method retrieves five fast location fixes for that device and evaluates a weighted least squares (LS) location estimate based on sample locations retrieved. A LS location estimate is then filtered according to an anticipated trigger event and the least squares geofence method evaluates a final geofence side condition based on the LS location estimate previously computed.

公开(公告)号：EP2820630A4

公开(公告)日：2016-03-23

申请号：EP13754388

申请日：2013-03-04

Applicant: TELECOMM SYSTEMS INC

Inventor： HUGIE RICK ,  LAU JOSIAH ,  PHALKE SEEMA ,  FERGUSON ED

IPC: H04W4/02 ,  G01S5/02 ,  G01S19/48

CPC classification number: H04W4/021 ,  G01S5/0278 ,  G01S19/48 ,  H04W24/00