Error estimate concerning a target device's location operable to move in a wireless environment
    1.
    发明授权
    Error estimate concerning a target device's location operable to move in a wireless environment 有权
    关于可在无线环境中移动的目标设备位置的错误估计

    公开(公告)号:US07209752B2

    公开(公告)日:2007-04-24

    申请号:US10999220

    申请日:2004-11-30

    IPC分类号: H04Q7/20

    摘要: A method for determining an error estimate concerning a target device's location. The target device moves and communicates in a wireless environment using signals having at least one measurable signal value. A probabilistic model of the wireless environment indicates a probability distribution for signal values at several sample points in the wireless environment. A set of observations of signal values is made and the target device's location is estimated based on the probabilistic model and the set of observations. The error estimate is determined as a combination of products over several sample points. Each product comprises a probability distribution for the sample point in question being the target device's location and a distance function between the sample point in question and the target device's estimated location.

    摘要翻译: 一种用于确定关于目标设备位置的误差估计的方法。 目标设备使用具有至少一个可测量信号值的信号在无线环境中移动和通信。 无线环境的概率模型表示无线环境中几个采样点的信号值的概率分布。 进行一组信号值观测,并根据概率模型和观测值来估计目标设备的位置。 误差估计被确定为几个采样点的产品组合。 每个产品包括所讨论的采样点的概率分布是目标设备的位置以及所述采样点与目标设备的估计位置之间的距离函数。

    Location estimation in wireless telecommunication networks
    3.
    发明授权
    Location estimation in wireless telecommunication networks 有权
    无线电信网络中的位置估计

    公开(公告)号:US07228136B2

    公开(公告)日:2007-06-05

    申请号:US10465785

    申请日:2003-06-20

    IPC分类号: H04Q7/20

    CPC分类号: H04W64/00 G01S5/02 G01S5/0252

    摘要: A method for estimating a receiver's location in a wireless communication environment having several channels. Each channel has at least one signal parameter that varies with location differently from the other channels. A set of calibration data is determined for each calibration point, each set including the location and at least one measured signal parameter for each of several channels. The calibration data serve as a basis for a statistical model of the signal parameters versus a receiver's location. A set of observed signal parameters is determined, the set including at least one signal parameter for each of several channels at the receiver's location. A location estimate approximating the location of the receiver is determined on the basis of the statistical model and the set of observed signal parameters.

    摘要翻译: 一种用于在具有多个信道的无线通信环境中估计接收机位置的方法。 每个通道具有与其他通​​道不同的位置变化的至少一个信号参数。 为每个校准点确定一组校准数据,每组校准数据包括几个通道中的每一个的位置和至少一个测量信号参数。 校准数据作为信号参数与接收机位置的统计模型的基础。 确定一组观察到的信号参数,该集合包括在接收机位置处的几个信道中的每一个的至少一个信号参数。 基于统计模型和观测信号参数的集合来确定近似接收机的位置的位置估计。

    Error estimate concerning a target device's location operable to move in a wireless environment
    4.
    发明申请
    Error estimate concerning a target device's location operable to move in a wireless environment 有权
    关于可在无线环境中移动的目标设备位置的错误估计

    公开(公告)号:US20050131635A1

    公开(公告)日:2005-06-16

    申请号:US10999220

    申请日:2004-11-30

    摘要: A method for determining an error estimate concerning a target device's location. The target device moves and communicates in a wireless environment using signals having at least one measurable signal value. A probabilistic model of the wireless environment indicates a probability distribution for signal values at several sample points in the wireless environment. A set of observations of signal values is made and the target device's location is estimated based on the probabilistic model and the set of observations. The error estimate (43) is determined as a combination of products over several sample points (SP). Each product comprises a probability distribution (41) for the sample point in question being the target device's location and a distance function (43) between the sample point in question and the target device's estimated location.

    摘要翻译: 一种用于确定关于目标设备位置的误差估计的方法。 目标设备使用具有至少一个可测量信号值的信号在无线环境中移动和通信。 无线环境的概率模型表示无线环境中几个采样点的信号值的概率分布。 进行一组信号值观测,并根据概率模型和观测值来估计目标设备的位置。 误差估计(43)被确定为几个采样点(SP)上的乘积的组合。 每个产品包括用于所述样本点的概率分布(41)是目标设备的位置以及所述样本点与目标设备的估计位置之间的距离函数(43)。