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21. 发明申请

US20090305726A1 Position Determination System That Uses A Cellular Communication System 有权
标题翻译：使用蜂窝通信系统的位置确定系统
公开(公告)号：US20090305726A1
公开(公告)日：2009-12-10
申请号：US12482299
申请日：2009-06-10
申请人： Roland R. Rick , Ivan Fernandez-Corbaton , Jeremy M. Stein , Messay Amerga , Borislav Ristic , Ashok Bhatia
发明人： Roland R. Rick , Ivan Fernandez-Corbaton , Jeremy M. Stein , Messay Amerga , Borislav Ristic , Ashok Bhatia
IPC分类号： H04W24/00 , G01S1/00
CPC分类号： H04W64/00 , G01S5/0257 , G01S19/48
摘要： A position determination system and apparatus for utilizing a network of cellular base stations to determine position of a mobile station includes taking a plurality of statistically independent data measurements of the pilot signals from the base stations. Each of the data measurements includes an earliest time of arrival, providing multiple independent measurements for each of the pilot signals. For each cellular base station, a representative measurement is calculated responsive to the independent measurements, which is used to determine position of the mobile station using an AFLT algorithm and/or in conjunction with a GPS algorithm. In some embodiments, the data measurements for each pilot signal further include an RMSE estimate and time of measurement for each time of arrival, and an energy measurement for all resolvable paths. If the mobile station comprises a cell phone, a cell search list and a GPS search list may be provided by a cell base station.
摘要翻译：用于利用蜂窝基站的网络来确定移动站的位置的位置确定系统和装置包括对来自基站的导频信号进行多个统计上独立的数据测量。每个数据测量包括最早的到达时间，为每个导频信号提供多个独立测量。对于每个蜂窝基站，响应于使用AFLT算法和/或结合GPS算法来确定移动站的位置的独立测量来计算代表性测量。在一些实施例中，每个导频信号的数据测量还包括对于每个到达时间的RMSE估计和测量时间以及针对所有可解析路径的能量测量。如果移动站包括蜂窝电话，小区搜索列表和GPS搜索列表可以由小区基站提供。

22. 发明授权

US07580450B2 Parameter estimator with dynamically variable integration time 有权
标题翻译：具有动态变量积分时间的参数估计器
公开(公告)号：US07580450B2
公开(公告)日：2009-08-25
申请号：US11501451
申请日：2006-08-08
申请人： Jeremy M. Stein , Ivan Fernandez-Corbaton , Roland R. Rick , Borislav Ristic , Ashok Bhatia , Messay Amerga
发明人： Jeremy M. Stein , Ivan Fernandez-Corbaton , Roland R. Rick , Borislav Ristic , Ashok Bhatia , Messay Amerga
IPC分类号： H04B1/00 , H04L27/06
CPC分类号： G01S19/24 , G01S5/0215 , G01S5/0221 , G01S19/21 , G01S19/31 , G01S19/46
摘要： A parameter estimator for estimating one or more parameter(s) from a correlation function derived from a signal using a dynamically variable integration time is described. The parameter estimator may be employed in a subscriber station to estimate the time of arrival of one or more base station or sector pilot signals in a wireless communication system. This information may be utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station.
摘要翻译：描述了用于使用动态变化的积分时间从从信号导出的相关函数中估计一个或多个参数的参数估计器。可以在用户台中使用参数估计器来估计无线通信系统中的一个或多个基站或扇区导频信号的到达时间。该信息可以用于用于估计用户台的位置的总体高级前向链路三边测量（AFLT）过程。

23. 发明申请

US20090131047A1 METHOD AND APPARATUS FOR REDUCING FREQUENCY SPACE FROM FREQUENCY SEARCH 有权
标题翻译：从频率搜索中减少频率空间的方法和装置
公开(公告)号：US20090131047A1
公开(公告)日：2009-05-21
申请号：US12212064
申请日：2008-09-17
申请人： Messay Amerga , Vivek Chawla , Deepali Garg
发明人： Messay Amerga , Vivek Chawla , Deepali Garg
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W52/0229 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/24
摘要： A method and apparatus for reducing frequency space from code space search is disclosed in a wireless network. The method and apparatus reduces the frequency space without compromising the probability of detection, so that user equipment can expedite system acquisition and reduce power consumption. To reduce the frequency space, the described aspects note that the power spectral density of the WCDMA signal is essentially flat within the channel bandwidth. By capturing in-phase quadrature samples and doing frequency domain analysis of the signal in bandwidth around the center frequency, to the described aspects can eliminate some channels from the WCDMA code space search during frequency scan.
摘要翻译：在无线网络中公开了一种用于从代码空间搜索减少频率空间的方法和装置。该方法和装置降低了频率空间，而不损害检测的概率，使得用户设备可以加快系统采集并降低功耗。为了降低频率空间，所描述的方面注意到WCDMA信号的功率谱密度在信道带宽内基本上是平坦的。通过捕获同相正交采样并对围绕中心频率的带宽中的信号进行频域分析，所描述的方面可以在频率扫描期间从WCDMA码空间搜索中消除一些信道。

24. 发明申请

US20080280610A1 METHODS AND APPARATUS FOR OUT OF SERVICE PROCESSING WITH VARIED BEHAVIORS 有权
标题翻译：用于不同行为的服务处理的方法和装置
公开(公告)号：US20080280610A1
公开(公告)日：2008-11-13
申请号：US12054135
申请日：2008-03-24
申请人： James A. Hutchison , Parag Mohan Kanade , Bhupesh Manoharlal Umatt , Alex Kuang-Hsuan Tu , Messay Amerga , Vineet Mittal , Michael Kevin Spartz
发明人： James A. Hutchison , Parag Mohan Kanade , Bhupesh Manoharlal Umatt , Alex Kuang-Hsuan Tu , Messay Amerga , Vineet Mittal , Michael Kevin Spartz
IPC分类号： H04Q7/20
CPC分类号： H04W48/18 , H04W52/0229 , H04W52/0264 , H04W52/0274 , Y02D70/00
摘要： Methods and apparatus for out of service processing with varied behaviors. In an aspect, a method is provided for service acquisition. The method includes determining one or more conditions, wherein each condition is associated with at least one weight, detecting whether an out-of-service event has occurred, and if an out-of-service event is detected: identifying selected conditions and associated weights, and processing the associated weights to determine service acquisition “on” and “off” times. In an aspect, an apparatus includes condition logic configured to determine one or more conditions, wherein each condition is associated with at least one weight, and processing logic configured to detect whether an out-of-service event has occurred, and if an out-of-service event is detected, to identify selected conditions and associated weights, and process the associated weights to determine service acquisition “on” and “off” times.
摘要翻译：不同行为的停止服务处理方法和设备。在一方面，提供了用于服务获取的方法。该方法包括确定一个或多个条件，其中每个条件与至少一个权重相关联，检测是否已经发生服务外事件，以及是否检测到服务外事件：识别所选择的条件和相关权重，并处理相关权重以确定服务获取“开”和“关”次。一方面，一种装置包括条件逻辑，其被配置为确定一个或多个条件，其中每个条件与至少一个权重相关联，以及处理逻辑，被配置为检测是否已经发生了服务外事件，检测服务事件，识别所选条件和相关权重，并处理相关权重以确定服务获取“开”和“关”次。

25. 发明授权

US07190750B2 Rake receiver for tracking closely spaced multipath 有权
标题翻译：用于跟踪紧密间隔的多路径的耙式接收器
公开(公告)号：US07190750B2
公开(公告)日：2007-03-13
申请号：US10086574
申请日：2002-02-28
申请人： Edward Harrison Teague , Messay Amerga , Jeremy Lin , Da-shan Shiu
发明人： Edward Harrison Teague , Messay Amerga , Jeremy Lin , Da-shan Shiu
IPC分类号： H04B7/10
CPC分类号： H04B1/7117
摘要： Techniques for tracking closely spaced multipath and preventing finger merge without monitoring relative positions between each of a plurality of fingers are disclosed. In one aspect, motion limits are determined for each finger. Time-tracking commands that would move the position of a finger outside its respective motion limits are suppressed. In another aspect, motion limits are updated dynamically, the motion limits of each finger determined in accordance with the motion limits of fingers adjacent to it. Various other aspects are also presented. These aspects have the benefit of preventing finger merge, which allows the allocation of multiple fingers to closely spaced multipath, thus increasing performance and system capacity, and mitigating misallocation of system resources.
摘要翻译：公开了用于跟踪紧密间隔的多路径并防止手指合并而不监视多个手指之间的相对位置的技术。在一个方面，为每个手指确定运动限制。可以抑制将手指位置移动超过其各自运动极限的时间跟踪命令。在另一方面，运动限制被动态地更新，每个手指的运动限制根据与其相邻的手指的运动限制确定。还提出了各种其他方面。这些方面具有防止手指合并的优点，这允许将多个指状物分配到紧密间隔的多路径，从而提高性能和系统容量，并减轻系统资源的未分配。

26. 发明申请

US20050272425A1 Maintaining and searching sets of cells in a wireless communication system 有权
标题翻译：在无线通信系统中维护和搜索小区集合
公开(公告)号：US20050272425A1
公开(公告)日：2005-12-08
申请号：US10946853
申请日：2004-09-21
申请人： Messay Amerga , Chalapathi Emani
发明人： Messay Amerga , Chalapathi Emani
IPC分类号： H04W24/00 , H04W36/30 , H04W48/16 , H04W52/02 , H04W88/08 , H04Q7/20
CPC分类号： H04B1/7083 , H04B1/70735 , H04B2201/70702 , H04W24/00 , H04W36/30 , H04W48/16 , H04W52/0206 , H04W52/0245 , H04W88/08 , Y02D70/40
摘要： For cell measurement, a wireless device categorizes cells whose identities are known to the device into multiple sets. The wireless device may obtain these cells from the system via signaling and/or detect these cells via searches. Different sets of cells may be associated with different levels of importance (e.g., for handoff), require different amounts of processing for measurements, and so on. Each set is associated with a particular measurement rate. Cells deemed to be more important (e.g., for handoff) are measured more frequently. Cells deemed to be less important and/or require more processing for measurements (e.g., cells with unknown timing) are measured less frequently. The wireless device performs searches and makes measurements for the cells in each set at the measurement rate selected for that set.
摘要翻译：对于小区测量，无线设备将其设备已知的身份的小区分为多组。无线设备可以经由信令从系统获得这些小区，和/或通过搜索来检测这些小区。不同的单元组可以与不同的重要程度相关联（例如，用于切换），需要不同量的用于测量的处理等等。每组与特定的测量速率相关联。更频繁地测量被认为更重要的小区（例如，用于切换）。被认为不那么重要和/或需要更多的测量处理的细胞（例如，具有未知定时的细胞）被更少地测量。无线设备以为该组选择的测量速率进行搜索并对每组中的小区进行测量。

27. 发明授权

US08527014B2 Sleep mode for wireless communication device during out of service operation 失效
标题翻译：无线通信设备在停止运行时的休眠模式
公开(公告)号：US08527014B2
公开(公告)日：2013-09-03
申请号：US11283100
申请日：2006-03-06
申请人： Messay Amerga , Bhupesh Umatt , Vineet Mittal
发明人： Messay Amerga , Bhupesh Umatt , Vineet Mittal
IPC分类号： H04M1/00
CPC分类号： H04W52/287 , H04W52/0229 , Y02D70/1222 , Y02D70/1242
摘要： The disclosure is directed to techniques for performing service signal searches with reduced power consumption when a wireless communication device is operating out of service. The techniques include placing the wireless communication device in a “deep sleep” mode when the wireless communication device is not in service. When operating in the deep sleep mode, the wireless communication device reduces power consumption by not looking for paging signals or searching for service signals. The wireless communication device then may periodically enter a wake-up period during which power consumption is increased to perform signal searches in one or more frequency bands. The wireless communication device returns to the deep sleep mode when the signal searches are unsuccessful.
摘要翻译：本公开涉及当无线通信设备运行停止服务时，以降低的功率消耗执行服务信号搜索的技术。这些技术包括当无线通信设备不在服务时将无线通信设备置于“深度睡眠”模式。当在深度睡眠模式下操作时，无线通信设备通过不寻找寻呼信号或搜索服务信号来降低功耗。然后，无线通信设备可以周期性地进入唤醒周期，在该唤醒周期期间增加功耗以在一个或多个频带中执行信号搜索。当信号搜索不成功时，无线通信设备返回深度睡眠模式。

28. 发明授权

US08045981B2 System search to detect for a wireless communication network in a crowded frequency band 有权
标题翻译：系统搜索在拥挤的频带中检测无线通信网络
公开(公告)号：US08045981B2
公开(公告)日：2011-10-25
申请号：US11283115
申请日：2005-11-17
申请人： Bhupesh Manoharlal Umatt , Messay Amerga , Vineet Mittal
发明人： Bhupesh Manoharlal Umatt , Messay Amerga , Vineet Mittal
IPC分类号： H04W4/00
CPC分类号： H04W48/16
摘要： Techniques for efficiently performing system search to obtain service from a wireless system as quickly as possible are described. A terminal initially looks for service from a first (e.g., W-CDMA) system. The terminal identifies network(s) in the first system from which service was received in the past and performs acquisition on each network to look for service. If service is not found for the first system, then the terminal performs a search for a second (e.g., GSM) system. If service is found on the second system, then the terminal obtains service from the second system and avoids a frequency scan for the first system. Otherwise, the terminal performs a frequency scan for the first system using the search results for the second system. The terminal may obtain a list of RF channels detected for the second system and may omit these RF channels and possibly some other RF channels around these RF channels from the frequency scan.
摘要翻译：描述了用于有效地执行系统搜索以尽可能快地从无线系统获得服务的技术。终端首先从第一（例如W-CDMA）系统寻找服务。终端识别过去接收服务的第一系统中的网络，并在每个网络上执行获取以寻找服务。如果没有为第一系统找到服务，则终端执行对第二（例如，GSM）系统的搜索。如果在第二系统上找到服务，则终端从第二系统获得服务，并避免对第一系统进行频率扫描。否则，终端使用第二系统的搜索结果对第一系统执行频率扫描。终端可以获得针对第二系统检测到的RF信道的列表，并且可以从频率扫描中省略这些RF信道以及可能的这些RF信道周围的一些其它RF信道。

29. 发明授权

US07693241B2 Rake receiver finger assignment based on signal path concentration 有权
标题翻译：基于信号路径浓度的耙式接收器手指分配
公开(公告)号：US07693241B2
公开(公告)日：2010-04-06
申请号：US11392316
申请日：2006-03-28
申请人： Thejaswi Bharadwaj Madapushi Sheshadri , Brian Dong , Messay Amerga , Chih-Ping Hsu , Parvathanathan Subrahmanya , Xiaoming Zhu
发明人： Thejaswi Bharadwaj Madapushi Sheshadri , Brian Dong , Messay Amerga , Chih-Ping Hsu , Parvathanathan Subrahmanya , Xiaoming Zhu
IPC分类号： H04L1/00 , H04B1/69 , H04B7/216
CPC分类号： H04B1/7117 , B60L2200/26
摘要： A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.
摘要翻译：耙式接收器手指分配器被配置为根据从发射机到耙式接收机的识别的信号路径的浓度，将耙机接收机手指分配到所识别的信号路径时间偏移之间的时间偏移。根据示例性实施例，观察到在时间窗内具有时间偏移的多个识别的信号路径，以确定由路径搜索器识别的信号路径的浓度。如果所识别的信号路径的数量表示信号路径的集中分布，例如在脂肪路径条件期间，则在两个识别的信号路径之间的时间偏移处分配至少一个耙指。

30. 发明授权

US07308022B2 Parameter estimator configured to distinguish between peaks and sidelobes of correlation function 有权
标题翻译：参数估计器被配置为区分相关函数的峰值和旁瓣
公开(公告)号：US07308022B2
公开(公告)日：2007-12-11
申请号：US10060885
申请日：2002-01-29
申请人： Roland R. Rick , Messay Amerga , Jeremy M. Stein , Ivan Fernandez-Corbaton
发明人： Roland R. Rick , Messay Amerga , Jeremy M. Stein , Ivan Fernandez-Corbaton
IPC分类号： H04B1/00
CPC分类号： G01S5/0215 , G01S5/0221 , G01S19/22 , H04B1/70755 , H04B1/7117
摘要： A parameter estimator for estimating one or more parameter(s) from a signal is described. A correlation function is derived from the signal, and the correlation function analyzed to determine if one or more first peak(s) are present, and, if so, distinguishable from the sidelobe(s) of a second peak. If the one or more first peak(s) are present and distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the one or more first peak(s). If the one or more first peak(s) are not present, or, if present, are not distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the second peak. The parameter estimator may be employed in a subscriber station to estimate a parameter such as the time of arrival of one or more base station or sector pilot signals in a wireless communication system. This information may be utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station.
摘要翻译：描述了用于从信号估计一个或多个参数的参数估计器。从信号中导出相关函数，分析相关函数以确定是否存在一个或多个第一峰，如果是，则与第二峰的旁瓣区分开。如果一个或多个第一峰存在并且可与第二峰的旁瓣区分开，则从一个或多个第一峰估计一个或多个参数。如果一个或多个第一峰不存在，或者如果存在，则不能与第二峰的旁瓣区分开，则从第二峰估计一个或多个参数。可以在用户台中使用参数估计器来估计诸如无线通信系统中的一个或多个基站或扇区导频信号的到达时间的参数。该信息可以用于用于估计用户台的位置的总体高级前向链路三边测量（AFLT）过程。

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