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1. 发明授权

US5508707A Method for determining position by obtaining directional information from spatial division multiple access (SDMA)-equipped and non-SDMA-equipped base stations 失效
标题翻译：通过从空分多址（SDMA）装备和非SDMA装备的基站获得方向信息来确定位置的方法
公开(公告)号：US5508707A
公开(公告)日：1996-04-16
申请号：US314486
申请日：1994-09-28
申请人： Frederick W. LeBlanc , Alparslan M. Uysal
发明人： Frederick W. LeBlanc , Alparslan M. Uysal
IPC分类号： G01S5/02 , G01S19/25 , H04W64/00 , G01S3/02 , H04B1/00 , H04M11/00 , H04Q7/00
CPC分类号： H04W64/00 , G01S5/02
摘要： A method for determining position by obtaining directional information from spatial division multiple access (SDMA)-equipped and non-SDMA-equipped base stations. The method is directed for use in a wireless communication system which includes a plurality of base stations each having a corresponding coverage area. For each of the base stations, a plurality of RF measurements are determined in cooperation with a receiver, including a link budget of the base station, for a predetermined plurality of distances and directions. Determined RF measurements for each of the base stations are modeled as a scaled contour shape having minimum and maximum boundaries. Base stations which neighbor the mobile unit are determined so as to define a first bounding polygon area by their intersecting contours. The first bounding polygon area generally describes the relative position of the mobile unit. A second bounding polygon area is determined in accordance with the lobes of neighboring base stations as described in terms of azimuth angles. The intersection of the first and second bounding polygon areas are determined so as to define a location polygon which more precisely describes the position of the mobile unit in terms of minimum and maximum error estimate.
摘要翻译：一种通过从空分多址（SDMA）和非SDMA装备的基站获得定向信息来确定位置的方法。该方法用于包括多个基站的无线通信系统，每个基站具有相应的覆盖区域。对于每个基站，对于预定的多个距离和方向，与包括基站的链路预算的接收机协作确定多个RF测量。每个基站的确定的RF测量被建模为具有最小和最大边界的缩放轮廓形状。确定与移动单元相邻的基站，以便通过它们的相交轮廓来定义第一边界多边形区域。第一边界多边形区域通常描述移动单元的相对位置。根据方位角所描述的，根据相邻基站的波瓣来确定第二边界多边形区域。确定第一和第二边界多边形区域的交点，以便根据最小和最大误差估计来定义更精确地描述移动单元的位置的位置多边形。

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