Method and apparatus for locating a remote unit within a communication system
    1.
    发明授权
    Method and apparatus for locating a remote unit within a communication system 有权
    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:US06191738B1

    公开(公告)日:2001-02-20

    申请号:US09409545

    申请日:1999-09-30

    IPC分类号: G01S302

    摘要: Determining a timing offset for remote-unit (113) location is accomplished by comparing a known sequence (203) to the information (201) transmitted by the remote unit (113) and received by the remote site (101, 102). In the preferred embodiment of the present invention a correlation window length (or size of the known sequence (203)) is allowed to vary based on a fundamental geometry of the serving and non-serving base stations, and a distance that the remote unit (113) is from the serving and non-serving base stations (101, 102).

    摘要翻译: 通过将已知序列(203)与由远程单元(113)发送并由远程站点(101,102)接收的信息(201)进行比较来确定远程单元(113)位置的定时偏移。 在本发明的优选实施例中,允许相关窗口长度(或已知序列(203)的大小)基于服务和非服务基站的基本几何形状而变化,并且远程单元 113)来自服务和非服务基站(101,102)。

    Method and apparatus for estimating a channel parameter
    2.
    发明授权
    Method and apparatus for estimating a channel parameter 有权
    用于估计信道参数的方法和装置

    公开(公告)号:US06208842B1

    公开(公告)日:2001-03-27

    申请号:US09409213

    申请日:1999-09-30

    IPC分类号: H04B1700

    CPC分类号: H04B17/309 H04W52/24

    摘要: A method and apparatus for estimating mobile radio channel parameters by dynamically determining the delay offset, carrier frequency offset, and coherent averaging length that yields the optimum despreading gain for current channel conditions. Obtaining the optimal despreading gain increases the fidelity of desired channel parameter estimates, (such as delay, phase, and the complex impulse response), and also expands the range of conditions under which they can be feasibly measured. A plurality of delay offsets, carrier frequency offsets, and coherent averaging lengths are considered for each measurement of channel parameters. An energy metric assigned to each combination of delay offset and coherent averaging length, and this value measures the despreading gain for these conditions.

    摘要翻译: 一种用于通过动态地确定延迟偏移,载波频率偏移和相干平均长度来估计移动无线电信道参数的方法和装置,其产生当前信道条件的最佳解扩增益。 获得最佳解扩增益增加了期望的信道参数估计(例如延迟,相位和复杂脉冲响应)的保真度,并且还扩展了它们可以被可行地测量的条件的范围。 对于信道参数的每个测量,考虑多个延迟偏移,载波频率偏移和相干平均长度。 分配给延迟偏移和相干平均长度的每个组合的能量度量,并且该值测量这些条件的解扩增益。

    Method and apparatus for determining remote unit location using phased array antenna elements
    3.
    发明授权
    Method and apparatus for determining remote unit location using phased array antenna elements 有权
    用于使用相控阵天线元件确定远程单元位置的方法和装置

    公开(公告)号:US06252867B1

    公开(公告)日:2001-06-26

    申请号:US09409546

    申请日:1999-09-30

    IPC分类号: H04B1702

    CPC分类号: H04W64/00 G01S5/12 H04B7/086

    摘要: An apparatus (100) and method dynamically allocates radio frequency receive path resources as required by a programmable location engine (112). The programmable location engine (112) employs cascaded time of arrival and direction of arrival algorithms to determine per remote unit location data. The apparatus (100) employs a phased array antenna (104) and a programmable receiver switching apparatus (108). A plurality of radio frequency receivers (102a-102n) receive a plurality of different carriers, such as CDMA carriers, on each of a different phased array antenna element (106a-106d). An RF switching matrix (126) and mobile location shared resource controller (110) dynamically switch the plurality of radio frequency receivers (102a-102b) to not only receive the different carriers on each of the different phased antenna radio elements to determine time of arrival information, but alternately receive a same carrier signal over all or a portion of the phased array antenna element to determine direction of arrival information.

    摘要翻译: 一种装置(100)和方法根据可编程定位引擎(112)的要求动态地分配射频接收路径资源。 可编程位置引擎(112)采用级联的到达时间和到达方法算法来确定每个远程单元位置数据。 装置(100)采用相控阵天线(104)和可编程接收机切换装置(108)。 多个射频接收机(102a-102n)在不同的相控阵天线元件(106a-106d)中的每一个上接收诸如CDMA载波的多个不同的载波。 RF切换矩阵(126)和移动位置共享资源控制器(110)动态地切换多个射频接收机(102a-102b),以便不仅在每个不同的相控天线无线电单元上接收不同的载波,以确定到达时间 信息,但是交替地在相控阵天线元件的全部或一部分上接收相同的载波信号以确定到达信息的方向。

    Method and apparatus for determining an angle of arrival of a transmitted signal in a communication system
    4.
    发明授权
    Method and apparatus for determining an angle of arrival of a transmitted signal in a communication system 有权
    用于确定通信系统中发射信号的到达角的方法和装置

    公开(公告)号:US06177907B1

    公开(公告)日:2001-01-23

    申请号:US09409548

    申请日:1999-09-30

    IPC分类号: G01S302

    摘要: A method and apparatus for determining an angle-of-arrival (AOA) of the prompt ray at an adjacent sector of a base station is provided. High precision parameter estimates from a main sector location searcher (501) are provided to an adjacent sector location searcher (502) in order to enhance the accuracy of the parameter estimates generated by the adjacent sector location searcher (502). Main sector time-delay and phase estimates may be used as estimates for the adjacent sector time-delay, and phase estimates to increase the coherent averaging window within the adjacent sector location searcher, and hence to increase the accuracy of the amplitude estimation from the adjacent sector location searcher.

    摘要翻译: 提供一种用于确定基站相邻扇区处的提示光线的到达角(AOA)的方法和装置。 为了提高由相邻的扇区位置搜索器(502)生成的参数估计的精度,来自主扇区位置搜索器(501)的高精度参数估计被提供给相邻扇区位置搜索器(502)。 可以将主扇区时间延迟和相位估计用作相邻扇区时间延迟的估计,以及用于增加相邻扇区位置搜索器内的相干平均窗口的相位估计,并因此增加来自相邻扇区时间延迟的幅度估计的精度 扇区位置搜索器。

    Method and apparatus for locating a remote unit within a communication
system
    5.
    发明授权
    Method and apparatus for locating a remote unit within a communication system 有权
    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:US6160511A

    公开(公告)日:2000-12-12

    申请号:US409552

    申请日:1999-09-30

    摘要: A base station (101) calculates a location of a remote unit (113) using a first location technique. The first location technique is a single-site estimation of a PN offset for the remote unit (PN.sub.primary.sbsb.--.sub.site). PN.sub.primary.sbsb.--.sub.site is then forwarded by the base station (101), along with its base station identification, to locating equipment (107). Equipment (107) then passes a second location request to the serving base station (101) and those base stations neighboring the serving base station (neighbor base stations). PN.sub.primary.sbsb.--.sub.site is sent with the second location request, along with an identity of the base station that made the first location estimate. The neighboring base stations then calculate a "search window" for each base station to search when locating the remote unit (113). The search range is based on the first location, and the identity of the base station that made the first location estimate.

    摘要翻译: 基站(101)使用第一定位技术计算远程单元(113)的位置。 第一定位技术是远程单元(PN主站)的PN偏移的单站点估计。 然后,基站(101)将PN主站与其基站识别一起转发到定位设备(107)。 然后,设备(107)将第二位置请求传递到服务基站(101)和与服务基站(邻近基站)相邻的那些基站。 PN主站与第二位置请求一起发送,以及作出第一位置估计的基站的身份。 然后,相邻的基站在定位远程单元(113)时,计算每个基站搜索的“搜索窗口”。 搜索范围基于第一位置和进行第一位置估计的基站的身份。