公开(公告)号：US20140038637A1

公开(公告)日：2014-02-06

申请号：US14049049

申请日：2013-10-08

Applicant: QUALCOMM Incorporated

Inventor： Leonid Sheynblat ,  Wyatt T. Riley

IPC: H04W4/02

CPC classification number: H04W4/025 ,  G01S5/0263 ,  G01S19/46 ,  G01S19/48 ,  H04W64/00

Abstract: A method and apparatus to utilize a set of measurements (either partial or compete) to improve the accuracy of an initial position estimate for a wireless terminal. The initial position estimate for the terminal is first obtained (e.g., based on a cell-ID or an enhanced cell-ID solution). Measurements are obtained for the terminal. The initial position estimate is then updated with the measurements to obtain a revised position estimate for the terminal. The updating may be performed by (1) deriving a measurement vector based on the initial position estimate and the measurements, (2) forming an observation matrix for the measurements, (3) determining a matrix of weights, (4) deriving a correction vector based on the measurement vector, the observation matrix, and the weight matrix, and (5) updating the initial position estimate with the correction vector.

Abstract translation: 一种利用一组测量（部分或竞争）来提高无线终端的初始位置估计的精度的方法和装置。 首先获得终端的初始位置估计（例如，基于小区ID或增强小区ID解决方案）。 对终端进行测量。 然后用测量值更新初始位置估计，以获得终端的修改的位置估计。 可以通过（1）基于初始位置估计和测量导出测量向量来执行更新，（2）形成用于测量的观察矩阵，（3）确定权重矩阵，（4）导出校正向量 基于测量矢量，观测矩阵和权重矩阵，以及（5）用校正矢量更新初始位置估计。