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21. 发明申请

US20090213910A1 Code Power Estimation for MIMO Signals 审中-公开
标题翻译： MIMO信号的码功率估计
公开(公告)号：US20090213910A1
公开(公告)日：2009-08-27
申请号：US12036425
申请日：2008-02-25
申请人： Stephen J. Grant
发明人： Stephen J. Grant
IPC分类号： H04B1/707 , H04B17/00
CPC分类号： H04B1/712 , H04B7/0413 , H04B17/327 , H04B2201/709727 , Y02D70/1242 , Y02D70/1244 , Y02D70/40 , Y02D70/444
摘要： Methods and apparatus for estimating code-reuse interference associated with a received multi-stream multiple-input multiple-output (MIMO) signal are disclosed. In an exemplary method, impairment covariance associated with the received multi-stream MIMO signal is measured, and first and second sets of samples for received traffic data symbols are collected, using first and second sets of RAKE combining weights corresponding to effective net channel responses for first and second streams of the multi-stream MIMO signal, respectively. A per-code energy value for at least one stream of the received multi-stream MIMO signal is computed, as a function of the measured impairment covariance, the effective net channel responses for the first and second streams, and the first and second sets of samples. Finally, code-reuse interference associated with the first stream is calculated, as a function of the per-code energy value and the effective net channel response corresponding to the first stream.
摘要翻译：公开了用于估计与接收的多流多输入多输出（MIMO）信号相关联的码重用干扰的方法和装置。在示例性方法中，测量与所接收的多流MIMO信号相关联的损害协方差，并且使用与有效网络信道响应对应的第一和第二组RAKE组合权重来收集用于接收的业务数据符号的第一和第二组采样，分别是多流MIMO信号的第一和第二流。计算接收的多流MIMO信号的至少一个流的每码能量值，作为测量的损害协方差的函数，第一和第二流的有效净通道响应以及第一和第二组的样品。最后，根据对应于第一流的每码能量值和有效净通道响应，计算与第一流相关联的代码重用干扰。

22. 发明授权

US07957485B2 Reduced complexity parametric covariance estimation for precoded MIMO transmissions 有权
标题翻译：用于预编码MIMO传输的减少的复杂度参数协方差估计
公开(公告)号：US07957485B2
公开(公告)日：2011-06-07
申请号：US12036337
申请日：2008-02-25
申请人： Douglas A. Cairns , Stephen J. Grant
发明人： Douglas A. Cairns , Stephen J. Grant
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L25/03898 , H04B1/712 , H04B7/0413 , H04B7/0619 , H04B17/21 , H04B17/336 , H04B2201/70707 , H04B2201/709727
摘要： A model-based technique for estimating impairment covariance associated with a MIMO signal is disclosed. In an exemplary method, an impairment model is constructed for a received composite information signal comprising at least a first data stream transmitted from first and second antennas according to a first antenna weighting vector. The impairment model includes first and second model terms corresponding to the first and second antennas, respectively, but in several embodiments does not include a cross-antenna interference term. In another embodiment, an impairment model for a received MIMO signal is constructed by computing an impairment model term for each antenna and an additional term to account for preceding interference in a single-stream MIMO transmission scenario. The impairment terms are grouped so that only two associated scaling terms are unknown; values for the scaling terms are estimated by fitting the model to measured impairment covariance values.
摘要翻译：公开了一种用于估计与MIMO信号相关的损害协方差的基于模型的技术。在一个示例性方法中，针对接收的复合信息信号构建损伤模型，所述复合信息信号包括根据第一天线加权向量从第一和第二天线发送的至少第一数据流。损伤模型分别包括对应于第一和第二天线的第一和第二模型项，但是在几个实施例中不包括横向天线干扰项。在另一个实施例中，通过计算每个天线的损伤模型项和用于考虑单流MIMO传输场景中的预编码干扰的附加项来构造用于所接收的MIMO信号的损伤模型。损害条款被分组，使得只有两个相关联的缩放术语是未知的; 通过将模型拟合到测量的损害协方差值来估计缩放术语的值。

23. 发明申请

US20090213945A1 Reduced Complexity Parametric Covariance Estimation for Precoded MIMO Transmissions 有权
标题翻译：降低预编码MIMO传输的复杂度参数协方差估计
公开(公告)号：US20090213945A1
公开(公告)日：2009-08-27
申请号：US12036337
申请日：2008-02-25
申请人： Douglas A. Cairns , Stephen J. Grant
发明人： Douglas A. Cairns , Stephen J. Grant
IPC分类号： H04L27/28
CPC分类号： H04L25/03898 , H04B1/712 , H04B7/0413 , H04B7/0619 , H04B17/21 , H04B17/336 , H04B2201/70707 , H04B2201/709727
摘要： A model-based technique for estimating impairment covariance associated with a MIMO signal is disclosed. In an exemplary method, an impairment model is constructed for a received composite information signal comprising at least a first data stream transmitted from first and second antennas according to a first antenna weighting vector. The impairment model includes first and second model terms corresponding to the first and second antennas, respectively, but in several embodiments does not include a cross-antenna interference term. In another embodiment, an impairment model for a received MIMO signal is constructed by computing an impairment model term for each antenna and an additional term to account for preceding interference in a single-stream MIMO transmission scenario. The impairment terms are grouped so that only two associated scaling terms are unknown; values for the scaling terms are estimated by fitting the model to measured impairment covariance values.
摘要翻译：公开了一种用于估计与MIMO信号相关的损害协方差的基于模型的技术。在一个示例性方法中，针对接收的复合信息信号构建损伤模型，所述复合信息信号包括根据第一天线加权向量从第一和第二天线发送的至少第一数据流。损伤模型分别包括对应于第一和第二天线的第一和第二模型项，但是在几个实施例中不包括横向天线干扰项。在另一个实施例中，通过计算每个天线的损伤模型项和用于考虑单流MIMO传输场景中的预编码干扰的附加项来构造用于所接收的MIMO信号的损伤模型。损害条款被分组，使得只有两个相关联的缩放术语是未知的; 通过将模型拟合到测量的损害协方差值来估计缩放术语的值。

24. 发明授权

US08804616B2 Signaling mechanism for inter-RAT carrier aggregation 有权
标题翻译： RAT间载波聚合的信令机制
公开(公告)号：US08804616B2
公开(公告)日：2014-08-12
申请号：US12948871
申请日：2010-11-18
申请人： Stephen J. Grant , Stefan Parkvall , Mats Fredrik Sågfors
发明人： Stephen J. Grant , Stefan Parkvall , Mats Fredrik Sågfors
IPC分类号： H04Q7/00
CPC分类号： H04W76/16 , H04W88/06 , H04W88/10 , H04W88/12 , H04W92/045
摘要： A signaling mechanism informs a Radio Network Controller of the radio access technology associated with data packets forwarded to the Radio Network Controller from base stations supporting multiple radio access technologies. With this information, the Radio Network Controller can associate received data with the corresponding radio access technologies, and thus manage differing physical layer procedures, such as outer-loop power control, for the radio access technologies. In an example method, first and second data units transmitted by a mobile station over first and second radio access technologies, respectively, are forwarded from one or more base stations to a network control node for further processing. A control message associated with at least some of the data units is also sent to the network control node, the control message indicating the radio access technology over which the associated data units were transmitted.
摘要翻译：信令机制向无线电网络控制器通知从支持多种无线电接入技术的基站转发到无线电网络控制器的与数据分组相关联的无线电接入技术。利用该信息，无线电网络控制器可以将接收的数据与相应的无线电接入技术相关联，并且因此管理用于无线接入技术的不同物理层过程，例如外环功率控制。在一个示例方法中，由移动台通过第一和第二无线电接入技术分别发送的第一和第二数据单元从一个或多个基站转发到网络控制节点用于进一步处理。与至少一些数据单元相关联的控制消息也被发送到网络控制节点，该控制消息指示相关联的数据单元通过其发送的无线电接入技术。

25. 发明申请

US20110305193A1 Signaling Mechanism for Inter-RAT Carrier Aggregation 有权
标题翻译： RAT间载波聚合的信令机制
公开(公告)号：US20110305193A1
公开(公告)日：2011-12-15
申请号：US12948871
申请日：2010-11-18
申请人： Stephen J. Grant , Stefan Parkvall , Mats Fredrik Sagfors
发明人： Stephen J. Grant , Stefan Parkvall , Mats Fredrik Sagfors
IPC分类号： H04W4/00
CPC分类号： H04W76/16 , H04W88/06 , H04W88/10 , H04W88/12 , H04W92/045
摘要： A signaling mechanism informs a Radio Network Controller of the radio access technology associated with data packets forwarded to the Radio Network Controller from base stations supporting multiple radio access technologies. With this information, the Radio Network Controller can associate received data with the corresponding radio access technologies, and thus manage differing physical layer procedures, such as outer-loop power control, for the radio access technologies. In an example method, first and second data units transmitted by a mobile station over first and second radio access technologies, respectively, are forwarded from one or more base stations to a network control node for further processing. A control message associated with at least some of the data units is also sent to the network control node, the control message indicating the radio access technology over which the associated data units were transmitted.
摘要翻译：信令机制向无线电网络控制器通知从支持多种无线电接入技术的基站转发到无线电网络控制器的与数据分组相关联的无线电接入技术。利用该信息，无线电网络控制器可以将接收的数据与相应的无线电接入技术相关联，并且因此管理用于无线接入技术的不同物理层过程，例如外环功率控制。在一个示例方法中，由移动台通过第一和第二无线电接入技术分别发送的第一和第二数据单元从一个或多个基站转发到网络控制节点用于进一步处理。与至少一些数据单元相关联的控制消息也被发送到网络控制节点，该控制消息指示相关联的数据单元通过其发送的无线电接入技术。

26. 发明申请

US20090268787A1 Method and Apparatus for Compensating for Processing Timing Misalignment in a Communication Receiver 有权
标题翻译：用于补偿通信接收器中的处理定时不对准的方法和装置
公开(公告)号：US20090268787A1
公开(公告)日：2009-10-29
申请号：US12111526
申请日：2008-04-29
申请人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
发明人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
IPC分类号： H04L27/06
CPC分类号： H04B1/712 , H04B1/7105 , H04B1/7117 , H04B2201/709727
摘要： According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal.
摘要翻译：根据本文提出的教导，无线通信装置补偿其接收信号处理中的定时未对准。在至少一个实施例中，该装置估计接收信号的一组路径延迟并且对所估计的路径延迟设置处理延迟。该装置共同假设两个或多个路径的分数定时偏移的组合，并且计算指示联合假设的准确性的每个联合假设的决策度量。作为非限制性示例，决策度量可以是信号质量度量或距离度量（诸如在测量的净信道响应和作为包括在联合中的分数定时偏移的组合的函数之间重建的有效网络信道响应之间）假设）。设备评估决策度量以识别定时未对准的最佳估计，并相应地补偿接收信号的相干处理。

27. 发明申请

US20090213944A1 Receiver Parametric Covariance Estimation for Precoded MIMO Transmissions 有权
标题翻译：用于预编码MIMO传输的接收机参数协方差估计
公开(公告)号：US20090213944A1
公开(公告)日：2009-08-27
申请号：US12036323
申请日：2008-02-25
申请人： Stephen J. Grant
发明人： Stephen J. Grant
IPC分类号： H04L27/28
CPC分类号： H04B7/0417 , H04B1/712 , H04B2201/709727
摘要： A model-based technique for estimating signal impairments that can accommodate various transmitted signal configurations, including closed-loop transmit diversity signals and pre-coded MIMO signals, is disclosed. In an exemplary method, an impairment model is constructed for a received composite information signal comprising at least a first data stream transmitted from first and second antennas according to a first antenna weighting vector. The impairment model includes one or more model terms scaled by corresponding scaling parameters, wherein the model terms capture propagation channel effects and are independent of the first antenna weighting vector, and wherein the scaling parameters capture effects of the first antenna weighting vector. A parametric estimate of the impairment covariance is calculated using the impairment model.
摘要翻译：公开了一种用于估计可适应各种发射信号配置（包括闭环发射分集信号和预编码MIMO信号）的信号损伤的基于模型的技术。在一个示例性方法中，针对接收的复合信息信号构建损伤模型，所述复合信息信号包括根据第一天线加权向量从第一和第二天线发送的至少第一数据流。所述损伤模型包括由相应的缩放参数缩放的一个或多个模型项，其中所述模型项捕获传播信道效应，并且独立于所述第一天线加权矢量，并且其中所述缩放参数捕获所述第一天线加权矢量的效果。使用损伤模型计算损伤协方差的参数估计。

28. 发明申请

US20120188951A1 Preferential Allocation of Different Length Scrambling Codes 有权
标题翻译：优先分配不同长度的加扰码
公开(公告)号：US20120188951A1
公开(公告)日：2012-07-26
申请号：US13163270
申请日：2011-06-17
申请人： Ning He , Stephen J. Grant , Andres Reial
发明人： Ning He , Stephen J. Grant , Andres Reial
IPC分类号： H04W72/04
CPC分类号： H04L25/03866 , H04L27/2655 , H04W72/0466 , H04W72/048 , H04W88/12
摘要： A base station herein assists a radio network controller (RNC) to allocate scrambling codes in a cell. The base station's assistance advantageously permits the RNC to allocate different length scrambling codes to different mobile terminals (or downlink carriers) in the cell. Specifically, the base station determines a preference for whether the length of a scrambling code to be allocated to each terminal or carrier should be short or long, based on whether uplink communications transmitted by the terminal, or downlink communications transmitted over the carrier, are to be processed with a high-complexity receiver or a low-complexity receiver. The RNC receives these preferences from the base station and takes them into account in order to allocate either a short scrambling code or a long scrambling code to each terminal or downlink carrier in the cell. The RNC then propagates the scrambling code allocations throughout the cell.
摘要翻译：这里的基站协助无线电网络控制器（RNC）在小区中分配扰码。基站的帮助有利地允许RNC向小区中的不同移动终端（或下行链路载波）分配不同长度的扰码。具体地，基于由终端发送的上行链路通信或者通过载波发送的下行链路通信，基站是否确定要分配给每个终端或载波的扰码的长度是短还是长用高复杂度接收机或低复杂度接收机进行处理。 RNC从基站接收这些偏好，并将其考虑在内，以便为小区中的每个终端或下行链路载波分配短扰码或长加扰码。 RNC然后在整个小区中传播扰码分配。

29. 发明授权

US08045600B2 Method and apparatus for compensating for processing timing misalignment in a communication receiver 有权
标题翻译：用于补偿通信接收机中的处理定时未对准的方法和装置
公开(公告)号：US08045600B2
公开(公告)日：2011-10-25
申请号：US12111526
申请日：2008-04-29
申请人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
发明人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/7105 , H04B1/7117 , H04B2201/709727
摘要： According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal.
摘要翻译：根据本文提出的教导，无线通信装置补偿其接收信号处理中的定时未对准。在至少一个实施例中，该装置估计接收信号的一组路径延迟并且对所估计的路径延迟设置处理延迟。该装置共同假设两个或多个路径的分数定时偏移的组合，并且计算指示联合假设的准确性的每个联合假设的决策度量。作为非限制性示例，决策度量可以是信号质量度量或距离度量（诸如在测量的净信道响应和作为包括在联合中的分数定时偏移的组合的函数中重建的有效网络信道响应之间）假设）。设备评估决策度量以识别定时未对准的最佳估计，并相应地补偿接收信号的相干处理。

30. 发明授权

US07983353B2 Code power estimation for MIMO signals 有权
标题翻译： MIMO信号的码功率估计
公开(公告)号：US07983353B2
公开(公告)日：2011-07-19
申请号：US12036368
申请日：2008-02-25
申请人： Stephen J. Grant , Douglas A. Cairns
发明人： Stephen J. Grant , Douglas A. Cairns
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04B7/0426 , H04B1/712 , H04B2201/709727
摘要： Methods and apparatus for estimating code-reuse interference associated with a received multi-stream multiple-input multiple-output (MIMO) signal are disclosed. An estimate for the data-to-pilot power ratio, ΓD/P, may be obtained as a by-product of parametric estimation of impairment covariance associated with the received MIMO signal. In an exemplary method, a parametric impairment model is constructed for a received MIMO signal, the parametric model omitting code-reuse interference. Impairment covariance is measured, using, in one or more embodiments, received pilot symbol data. The parametric impairment model is fitted to the measured impairment covariance to obtain one or more scaling parameter values. A per-code energy value for a first data stream is then calculated from the one or more scaling parameter values. In some embodiments, the data-to-pilot power ratio for the received signal is first calculated from the one or more scaling parameters, and the per-code energy value calculated from the data-to-pilot power ratio.
摘要翻译：公开了用于估计与接收的多流多输入多输出（MIMO）信号相关联的代码重用干扰的方法和装置。可以获得数据导频功率比＆Ggr; D / P的估计，作为与接收的MIMO信号相关的损害协方差的参数估计的副产品。在示例性方法中，为接收的MIMO信号构建参数化损伤模型，该参数模型省略了码重用干扰。在一个或多个实施例中，使用接收的导频符号数据来测量损伤协方差。参数化损伤模型适用于测量的损害协方差，以获得一个或多个缩放参数值。然后从一个或多个缩放参数值计算第一数据流的每码能量值。在一些实施例中，首先从一个或多个缩放参数和从数据导频功率比计算出的每码能量值来计算接收信号的数据导频功率比。

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