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1. 发明授权

US06973320B2 Method and apparatus for locating a remote unit within a communication system 失效
标题翻译：用于定位通信系统内的远程单元的方法和装置
公开(公告)号：US06973320B2
公开(公告)日：2005-12-06
申请号：US10134282
申请日：2002-04-29
申请人： Larry Michael Brown , Norman Joseph Zerfas , Marty Frank Miller
发明人： Larry Michael Brown , Norman Joseph Zerfas , Marty Frank Miller
IPC分类号： H04W64/00 , H04Q7/20
CPC分类号： H04W64/00
摘要： Timing Advance information is obtained from base stations (103–105), and is utilized by a remote unit (113) to approximate the Time of Arrival (TOA) of the signals from each base station. The remote unit (113) accesses a single base station to determine its timing advance. In order to increase accuracy, the remote unit (113) then repeats the process, but during the next iteration, the transmission timing is advanced or delayed by a fraction of a bit (e.g. ¼ bit). The base station responds with a new timing advance value. This process is repeated until it is determined how many fractions of bit increments the remote unit (113) is away from a known timing advance boundary of the base station. Once known, this information is utilized to determine the location of the remote unit (113).
摘要翻译：定时提前信息从基站（103-105）获得，并被远程单元（113）用来近似来自每个基站的信号的到达时间（TOA）。远程单元（113）访问单个基站以确定其定时提前。为了提高精度，远程单元（113）然后重复该过程，但是在下一次迭代期间，将传输定时提前或延迟一小段位（例如，1/4比特）。基站用新的定时提前值进行响应。该过程被重复，直到确定远程单元（113）远离基站的已知定时提前边界的比特增量的多少分数。一旦知道，该信息被用于确定远程单元（113）的位置。

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