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公开(公告)号：US20060174179A1
公开(公告)日：2006-08-03
申请号：US11049991
申请日：2005-02-02
IPC分类号： H03M13/00
CPC分类号： H04W52/12 , H04B1/7172 , H04L1/20 , H04L1/201 , H04L1/208 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
摘要： To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block.
摘要翻译： 为了对具有未知格式的间歇活动传输信道执行擦除检测，接收机确定具有CRC故障的接收块的能量度量和符号错误率（SER）。 接收机基于能量度量和SER，能量度量和SER的估计平均值和标准偏差以及表示能量度量与SER之间的相关性的相关系数，计算接收块的不相关随机变量u和v。 然后，接收机基于至少一个决策标准来评估不相关的随机变量u和v，并且基于评估结果将接收到的块声明为擦除块或DTX块。 可以基于目标误报率概率来定义判定标准，并且基于接收块的另一个度量（例如零状态位）进行调整。
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公开(公告)号：US08074158B2
公开(公告)日：2011-12-06
申请号：US11049991
申请日：2005-02-02
IPC分类号： G06F11/00
CPC分类号： H04W52/12 , H04B1/7172 , H04L1/20 , H04L1/201 , H04L1/208 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
摘要： To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block.
摘要翻译： 为了对具有未知格式的间歇活动传输信道执行擦除检测，接收机确定具有CRC故障的接收块的能量度量和符号错误率（SER）。 接收机基于能量度量和SER，能量度量和SER的估计平均值和标准偏差以及表示能量度量与SER之间的相关性的相关系数，计算接收块的不相关随机变量u和v。 然后，接收机基于至少一个决策标准来评估不相关的随机变量u和v，并且基于评估结果将接收到的块声明为擦除块或DTX块。 可以基于目标误报率概率来定义判定标准，并且基于接收块的另一个度量（例如零状态位）进行调整。
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3.发明申请Erasure detection and power control for a transport channel with unknown format in a wireless communication system 有权在无线通信系统中对具有未知格式的传输信道的擦除检测和功率控制公开(公告)号：US20050276248A1
公开(公告)日：2005-12-15
申请号：US10875107
申请日：2004-06-09
CPC分类号： H04W52/04 , H04L1/20 , H04L1/201 , H04W52/12 , H04W52/16 , H04W52/20 , H04W52/287 , H04W52/362 , H04W52/44
摘要： Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver performs erasure detection by computing a symbol error rate (SER) and energy of the received block, comparing the computed SER against an SER threshold, comparing the computed energy against an energy threshold, and declaring an erasure if the computed SER is less than the SER threshold and the computed energy exceeds the energy threshold. The SER and energy thresholds may be adjusted based on the average SER and the average energy for prior received blocks with CRC failures. For power control, an SIR target is increased by an UP step whenever an erased block is detected for the transport channel.
摘要翻译： 对具有未知格式的间歇活动的传输信道执行擦除检测和功率控制。 接收器处理每个接收的块并确定其是否通过或失败CRC。 对于每个具有CRC故障的接收块，接收机通过计算接收块的符号错误率（SER）和能量来执行擦除检测，将计算的SER与SER阈值进行比较，将计算出的能量与能量阈值进行比较，并且声明 如果计算的SER小于SER阈值并且计算的能量超过能量阈值，则擦除。 可以基于具有CRC故障的先前接收的块的平均SER和平均能量来调整SER和能量阈值。 对于功率控制，每当检测到用于传输信道的擦除块时，SIR目标通过UP步增加。
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4.发明授权Erasure detection and power control for a transport channel with unknown format in a wireless communication system 有权在无线通信系统中对具有未知格式的传输信道的擦除检测和功率控制公开(公告)号：US07730381B2
公开(公告)日：2010-06-01
申请号：US10875107
申请日：2004-06-09
IPC分类号： H03M13/00
CPC分类号： H04W52/04 , H04L1/20 , H04L1/201 , H04W52/12 , H04W52/16 , H04W52/20 , H04W52/287 , H04W52/362 , H04W52/44
摘要： Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver performs erasure detection by computing a symbol error rate (SER) and energy of the received block, comparing the computed SER against an SER threshold, comparing the computed energy against an energy threshold, and declaring an erasure if the computed SER is less than the SER threshold and the computed energy exceeds the energy threshold. The SER and energy thresholds may be adjusted based on the average SER and the average energy for prior received blocks with CRC failures. For power control, an SIR target is increased by an UP step whenever an erased block is detected for the transport channel.
摘要翻译： 对具有未知格式的间歇活动的传输信道执行擦除检测和功率控制。 接收器处理每个接收的块并确定其是否通过或失败CRC。 对于每个具有CRC故障的接收块，接收机通过计算接收块的符号错误率（SER）和能量来执行擦除检测，将计算的SER与SER阈值进行比较，将计算出的能量与能量阈值进行比较，并且声明 如果计算的SER小于SER阈值并且计算的能量超过能量阈值，则擦除。 可以基于具有CRC故障的先前接收的块的平均SER和平均能量来调整SER和能量阈值。 对于功率控制，每当检测到用于传输信道的擦除块时，SIR目标通过UP步增加。
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5.发明授权Unified iterative decoding architecture using joint LLR extraction and a priori probability 有权使用联合LLR提取和先验概率的统一迭代解码架构公开(公告)号：US08976903B2
公开(公告)日：2015-03-10
申请号：US12552673
申请日：2009-09-02
申请人： Parvathanathan Subrahmanya , Andrew Sendonaris , Jia Tang , Atul A. Salvekar , Shantanu Khare , Jong Hyeon Park , Brian C. Banister , Tao Cui
发明人： Parvathanathan Subrahmanya , Andrew Sendonaris , Jia Tang , Atul A. Salvekar , Shantanu Khare , Jong Hyeon Park , Brian C. Banister , Tao Cui
CPC分类号： H04L1/06 , H04L1/005 , H04L1/0051 , H04L25/03171
摘要： Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.
摘要翻译： 本公开的某些方面涉及可以在多输入多输出（MIMO）和非MIMO无线系统中使用的用于统一迭代解调 - 解码的方法和装置。
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6.发明授权Method and apparatus for filtering noisy estimates to reduce estimation errors 有权用于过滤噪声估计以减少估计误差的方法和装置公开(公告)号：US08406359B2
公开(公告)日：2013-03-26
申请号：US12712907
申请日：2010-02-25
IPC分类号： H04B1/10
CPC分类号： H04L25/025 , H04B17/3913 , H04B2201/70701 , H04L25/0212 , H04L25/0228 , H04L25/03038
摘要： Techniques for filtering noisy estimates to reduce estimation errors are described. A sequence of input values (e.g., for an initial channel impulse response estimate (CIRE)) is filtered with an infinite impulse response (IIR) filter having at least one coefficient to obtain a sequence of output values (e.g., for a filtered CIRE). The coefficient(s) are updated based on the sequence of input values with an adaptive filter, a bank of prediction filters, or a normalized variation technique. To update the coefficient(s) with the adaptive filter, a sequence of predicted values is derived based on the sequence of input values. Prediction errors between the sequence of predicted values and the sequence of input values are determined and filtered to obtain filtered prediction errors. The coefficient(s) of the IIR filter are then updated based on the prediction errors and the filtered prediction errors.
摘要翻译： 描述了用于过滤噪声估计以减少估计误差的技术。 输入值的序列（例如，对于初始信道脉冲响应估计（CIRE））用具有至少一个系数的无限脉冲响应（IIR）滤波器进行滤波以获得输出值序列（例如，对于滤波后的CIRE） 。 基于具有自适应滤波器，预测滤波器组或归一化变化技术的输入值的序列来更新系数。 为了用自适应滤波器更新系数，基于输入值的序列导出预测值序列。 确定并过滤预测值序列与输入值序列之间的预测误差，以获得滤波预测误差。 然后基于预测误差和滤波预测误差来更新IIR滤波器的系数。
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公开(公告)号：US20110105037A1
公开(公告)日：2011-05-05
申请号：US12831474
申请日：2010-07-07
IPC分类号： H04B15/00
CPC分类号： H04B1/525 , H04B1/3805 , H04B1/406
摘要： Certain embodiments of the present disclosure support techniques for interference cancellation in a multi-mode wireless modem that supports coexistence of different radio technologies.
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8.发明申请APPARATUS AND METHODS FOR LOW POWER SENSING OF COMMUNICATION ACCESS TECHNOLOGIES 有权通信接入技术低功率感测装置及方法公开(公告)号：US20100322126A1
公开(公告)日：2010-12-23
申请号：US12610296
申请日：2009-10-31
IPC分类号： G08C17/00
CPC分类号： H04W52/028 , H04W48/16 , H04W48/18 , H04W52/0229 , H04W88/06 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要： Apparatus and methods for low power sensing of wireless access technologies are disclosed. In particular, a mobile wireless device, such as an access terminal, may utilize a lower power circuitry portion that operates at a lower power than active circuitry, such as a primary transceiver. The lower power circuitry portion includes a configurable searcher that is capable of sensing if signals of one or more various wireless access technologies are present. When the wireless device utilizes sleep or idle modes for power savings, use of the lower power sensing circuitry to sense the presence of wireless access technologies, rather than using an awoken higher power primary transceiver for sensing, affords increased power savings. An added ability of the lower power circuitry to be put into sleep or idles modes achieves even greater power savings.
摘要翻译： 公开了用于无线接入技术的低功率感测的装置和方法。 具体地，诸如接入终端的移动无线设备可以利用比诸如主收发器的有源电路低的功率操作的较低功率电路部分。 较低功率电路部分包括能够感测是否存在一种或多种各种无线接入技术的信号的可配置搜索器。 当无线设备利用睡眠或空闲模式进行功率节省时，使用低功率感测电路来感测无线接入技术的存在，而不是使用唤醒的较高功率的主收发器来进行感测，从而提供更大的功率节省。 低功率电路进入睡眠或空闲模式的附加功能实现了更大的功率节省。
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公开(公告)号：US20100304761A1
公开(公告)日：2010-12-02
申请号：US12473190
申请日：2009-05-27
CPC分类号： H04W52/0254 , H03G3/3078 , H04B1/7085 , H04B1/7117 , H04L25/03019 , H04L2025/03566 , H04W48/16 , Y02D70/122 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/40
摘要： Methods and apparatus are directed to mobile devices utilizing motion and/or position sensors for improving operating performance and/or power efficiency. In one example, a method for reducing power consumption in a mobile device includes receiving movement information, establishing movement data based on the movement information, determining if the mobile device is stationary using the movement data; and reducing the frequency of searching for a base station when the mobile device is stationary. In another example, a mobile device which reduces power consumption based upon movement data includes an RF front end, a receiver coupled to the RF front end, a data demodulator coupled to the receiver, a searcher, coupled to the RF front end and the receiver, which searches for base stations, and a processing unit coupled to the searcher, wherein the processing unit controls the searcher based upon the stationarity of the mobile device.
摘要翻译： 方法和装置涉及利用运动和/或位置传感器来改善操作性能和/或功率效率的移动设备。 在一个示例中，用于降低移动设备中的功耗的方法包括接收移动信息，基于移动信息建立移动数据，使用移动数据确定移动设备是否静止; 并且当移动设备静止时降低搜索基站的频率。 在另一示例中，基于移动数据降低功耗的移动设备包括RF前端，耦合到RF前端的接收器，耦合到接收器的数据解调器，耦合到RF前端和接收器的搜索器 ，其搜索基站，以及耦合到搜索器的处理单元，其中处理单元基于移动设备的平稳性来控制搜索者。
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10.发明授权Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system 有权用于在CDMA通信系统中对来自多个基站的传输进行时间调整的方法和装置公开(公告)号：US07796549B2
公开(公告)日：2010-09-14
申请号：US12019596
申请日：2008-01-24
申请人： Francesco Grilli , Charles E. Wheatley, III , Serge D. Willenegger , Parvathanathan Subrahmanya
发明人： Francesco Grilli , Charles E. Wheatley, III , Serge D. Willenegger , Parvathanathan Subrahmanya
IPC分类号： H04W4/00
CPC分类号： H04W56/002 , H04B7/2668 , H04B2201/70702 , H04W56/001 , H04W56/0015 , H04W56/0045 , H04W92/20
摘要： Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).
摘要翻译： 将来自多个基站的传输时间对齐到终端的方案。 为了实现时间对准，确定在终端观察到的来自基站的传输的到达时间之间的差异，并将其提供给系统，并用于调整基站处的定时，使得终端专用无线帧到达 终端在特定的时间窗口内。 在一个方案中，两个基站之间的时差被划分为帧级时间差和码片级时间差。 无论何时请求执行和报告时差测量，终端测量每个候选基站相对于参考基站的芯片级定时。 此外，终端还测量帧级定时，并且仅在需要时在时差测量中包括该信息。 否则，终端将帧级部分设置为预定值（例如，零）。
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