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公开(公告)号：US20090143018A1
公开(公告)日：2009-06-04
申请号：US11948244
申请日：2007-11-30
IPC分类号： H04B17/00
CPC分类号： G01S5/0289 , G01S5/021 , G01S5/0221 , G01S5/0236 , H04W48/08 , H04W48/16 , H04W64/00 , H04W88/08
摘要： In an overlay, network-based Wireless Location System, Location Measurement Units (LMUs) are used to collect radio signaling both in the forward and reverse channels for use in TDOA and/or AoA positioning methods. Information broadcast from the radio network and by global satellite navigation system constellations can be received by the LMUs and used to reduce the difficulty of initial system configuration and reconfiguration due to radio network changes.
摘要翻译： 在覆盖层中，基于网络的无线定位系统，位置测量单元（LMU）用于在前向和反向信道中收集用于TDOA和/或AoA定位方法的无线电信令。 无线电网络和全球卫星导航系统星座的广播可以由LMU接收，用于降低由于无线电网络变化引起的初始系统配置和重新配置的难度。
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公开(公告)号：US08548488B2
公开(公告)日：2013-10-01
申请号：US11948244
申请日：2007-11-30
IPC分类号： H04W24/00
CPC分类号： G01S5/0289 , G01S5/021 , G01S5/0221 , G01S5/0236 , H04W48/08 , H04W48/16 , H04W64/00 , H04W88/08
摘要： In an overlay, network-based Wireless Location System, Location Measurement Units (LMUs) are used to collect radio signaling both in the forward and reverse channels for use in TDOA and/or AoA positioning methods. Information broadcast from the radio network and by global satellite navigation system constellations can be received by the LMUs and used to reduce the difficulty of initial system configuration and reconfiguration due to radio network changes.
摘要翻译： 在覆盖层中，基于网络的无线定位系统，位置测量单元（LMU）用于在前向和反向信道中收集用于TDOA和/或AoA定位方法的无线电信令。 无线电网络和全球卫星导航系统星座的广播可以由LMU接收，用于降低由于无线电网络变化引起的初始系统配置和重新配置的难度。
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公开(公告)号：US08200239B2
公开(公告)日：2012-06-12
申请号：US12269000
申请日：2008-11-11
CPC分类号： H04W64/003 , H04W84/045
摘要： Location of small, consumer deployed femto-cells cannot be determined by the usual site survey methods. Location of attached mobiles allows for a proxy location of the femto-cell that can then be used for wireless network planning including the provisioning of a calculated default emergency services location for the femto-cell.
摘要翻译： 小型消费者部署的毫微微小区的位置不能由通常的现场调查方法来确定。 连接移动台的位置允许毫微微小区的代理位置，然后可以将其用于无线网络规划，包括为毫微微小区提供计算的默认紧急服务位置。
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公开(公告)号：US08199050B2
公开(公告)日：2012-06-12
申请号：US13240964
申请日：2011-09-22
IPC分类号： G01S19/45
CPC分类号： G01S19/46
摘要： A method and apparatus for position determination is provided using measurements from both Global Positioning System (GPS) receivers and terrestrial-based Uplink Time Difference of Arrival (UTDOA) receivers. The method involves the transformation of downlink satellite measurements into equivalent UTDOA measurements by computing comparable cross-correlation coefficients and time differences of arrival with respect to a UTDOA reference station. The method includes a weighting operation whereby the relative weights of the UTDOA measurements and the relative weights of the GPS measurements are adjusted based on a theoretical scaling followed by empirical adjustments. The method further involves the efficient computation and combining of metrics that are used to minimize the weighted error between candidate location solutions and the UTDOA and GPS measurements.
摘要翻译： 使用来自全球定位系统（GPS）接收机和基于地面的上行链路到达时差（UTDOA）接收机的测量来提供用于位置确定的方法和装置。 该方法涉及通过计算相对于UTDOA参考站的可比互相关系数和到达时间差来将下行链路卫星测量转换成等效的UTDOA测量。 该方法包括一个加权操作，其中UTDOA测量的相对权重和GPS测量的相对权重基于经验调整后的理论缩放来调整。 该方法还涉及用于最小化候选位置解决方案与UTDOA和GPS测量之间的加权误差的度量的有效计算和组合。
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公开(公告)号：US07924224B2
公开(公告)日：2011-04-12
申请号：US12192842
申请日：2008-08-15
CPC分类号： G01S5/0221 , G01S5/04 , G01S5/06 , H04W64/00
摘要： In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference signals subdivided into discrete segments prior to correlation, the effects of mobile clock drift and Doppler shifts can be mitigated allowing for increased processing gain.
摘要翻译： 在基于网络的无线定位系统（WLS）中，地理分布的位置测量单元（LMU）必须能够跨多个BTS覆盖区域检测和使用反向信道（移动到网络）信号。 通过使用匹配副本相关处理与在相关之前被分成离散段的本地参考信号和参考信号，可以减轻移动时钟漂移和多普勒频移的影响，从而允许增加的处理增益。
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公开(公告)号：US20100039326A1
公开(公告)日：2010-02-18
申请号：US12192842
申请日：2008-08-15
IPC分类号： G01S3/02
CPC分类号： G01S5/0221 , G01S5/04 , G01S5/06 , H04W64/00
摘要： In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference signals subdivided into discrete segments prior to correlation, the effects of mobile clock drift and Doppler shifts can be mitigated allowing for increased processing gain.
摘要翻译： 在基于网络的无线定位系统（WLS）中，地理分布的位置测量单元（LMU）必须能够跨多个BTS覆盖区域检测和使用反向信道（移动到网络）信号。 通过使用匹配副本相关处理与在相关之前被分成离散段的本地参考信号和参考信号，可以减轻移动时钟漂移和多普勒频移的影响，从而允许增加的处理增益。
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公开(公告)号：US20080261614A1
公开(公告)日：2008-10-23
申请号：US11736950
申请日：2007-04-18
IPC分类号： H04Q7/20
摘要： In an overlay, U-TDOA-based, Wireless Location System, LMUs typically co-located with BTSs, are used to collect radio signaling both in the forward and reverse channels. Techniques are used to compensate for sparse LMU deployments where sections of the U-TDOA service area are uplink demodulation or downlink beacon discovery limited.
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公开(公告)号：US08242959B2
公开(公告)日：2012-08-14
申请号：US11736902
申请日：2007-04-18
摘要： In an overlay, U-TDOA-based, Wireless Location System, LMUs typically co-located with BTSs, are used to collect radio signaling both in the forward and reverse channels. Techniques are used to compensate for sparse LMU deployments where sections of the U-TDOA service area are uplink demodulation or downlink beacon discovery limited.
摘要翻译： 在覆盖层中，基于U-TDOA的无线定位系统，通常与BTS共处的LMU用于在前向和反向信道中收集无线电信令。 技术用于补偿在U-TDOA服务区域的部分是上行链路解调或下行链路信标发现受限的稀疏LMU部署。
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9.发明授权公开(公告)号：US08145238B2
公开(公告)日：2012-03-27
申请号：US12909732
申请日：2010-10-21
CPC分类号： H04W64/00 , G01S5/0036 , G01S5/0226 , G01S5/10
摘要： One illustrative embodiment takes the form of a system for locating wireless transmitters employing an Orthogonal Frequency Division Multiplexing (OFDM) digital modulation scheme. The OFDM scheme comprises transmitting signal components over narrowband frequency channels spanning a wideband channel. The system includes a first receiving system configured to receive a fraction of the signal components transmitted by a first wireless transmitter to be located in a fraction of the narrowband frequency channels, and to process the fraction of the signal components to derive location related measurements. The system further includes at least a second receiving system configured to receive the fraction of the signal components transmitted by the first wireless transmitter, and to process this fraction of the signal components to derive location related measurements. The system also includes a processing system configured to use location related measurements from the first and second receiving systems to compute the location of the wireless transmitter.
摘要翻译： 一个说明性实施例采用采用正交频分复用（OFDM）数字调制方案来定位无线发射机的系统的形式。 OFDM方案包括在跨越宽带信道的窄带频率信道上发射信号分量。 该系统包括第一接收系统，该第一接收系统被配置为接收由第一无线发射机传输的信号分量的一小部分以位于窄带频率信道的一部分中，并且处理信号分量的分数以导出位置相关测量。 该系统还包括至少第二接收系统，其被配置为接收由第一无线发射机发射的信号分量的一部分，并且处理该部分信号分量以导出位置相关测量。 该系统还包括配置成使用来自第一和第二接收系统的位置相关测量来计算无线发射机的位置的处理系统。
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10.发明申请公开(公告)号：US20110033002A1
公开(公告)日：2011-02-10
申请号：US12909732
申请日：2010-10-21
IPC分类号： H04L27/10
CPC分类号： H04W64/00 , G01S5/0036 , G01S5/0226 , G01S5/10
摘要： One illustrative embodiment takes the form of a system for locating wireless transmitters employing an Orthogonal Frequency Division Multiplexing (OFDM) digital modulation scheme. The OFDM scheme comprises transmitting signal components over narrowband frequency channels spanning a wideband channel. The system includes a first receiving system configured to receive a fraction of the signal components transmitted by a first wireless transmitter to be located in a fraction of the narrowband frequency channels, and to process the fraction of the signal components to derive location related measurements. The system further includes at least a second receiving system configured to receive the fraction of the signal components transmitted by the first wireless transmitter, and to process this fraction of the signal components to derive location related measurements. The system also includes a processing system configured to use location related measurements from the first and second receiving systems to compute the location of the wireless transmitter.
摘要翻译： 一个说明性实施例采用采用正交频分复用（OFDM）数字调制方案来定位无线发射机的系统的形式。 OFDM方案包括在跨越宽带信道的窄带频率信道上发射信号分量。 该系统包括第一接收系统，其被配置为接收由第一无线发射机发射的位于窄带频率信道的一部分中的信号分量的一部分，并且处理信号分量的分数以导出位置相关测量。 该系统还包括至少第二接收系统，其被配置为接收由第一无线发射机发射的信号分量的一部分，并且处理该部分信号分量以导出位置相关测量。 该系统还包括配置成使用来自第一和第二接收系统的位置相关测量来计算无线发射机的位置的处理系统。
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