公开(公告)号：US20050113127A1

公开(公告)日：2005-05-26

申请号：US11008894

申请日：2004-12-10

申请人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Vayanos ,  Subramanya Rao

发明人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Vayanos ,  Subramanya Rao

IPC分类号： H04B7/005 ,  H04L12/56 ,  H04W28/18 ,  H04W52/22 ,  H04W52/26 ,  H04W52/36 ,  H04W52/50 ,  H04W52/58 ,  H04Q7/20

CPC分类号： H04W52/58 ,  H04L1/0001 ,  H04L1/0019 ,  H04L47/14 ,  H04W28/18 ,  H04W52/221 ,  H04W52/26 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

摘要： Various embodiments are provided for determining a set of acceptable transport format combinations for transmission on a current time frame. A set of acceptable modified rate power adjustment values is determined based on a maximum power level, an accumulated power commands and an initial power control command. A set of acceptable channel gain factors is determined based on the set of acceptable modified rate power adjustments values, and the set of acceptable transport format combinations is determined based on the set of acceptable channel gain factors. A possible set of modified rate power adjustment values is associated to a set of channel gain factors for determining the set of acceptable channel gain factors based on various design of a transmitter chain used for transmission of data from the mobile station.

摘要翻译： 提供了各种实施例，用于确定用于在当前时间帧上传输的一组可接受传输格式组合。 基于最大功率电平，累积功率命令和初始功率控制命令来确定一组可接受的修改率功率调整值。 基于可接受的修改率功率调整值的集合来确定一组可接受的信道增益因子，并且基于可接受的信道增益因子的集合来确定可接受传输格式组合的集合。 基于用于从移动台传输数据的发射机链的各种设计，可能的一组修改速率功率调整值与一组信道增益因子相关联，用于确定可接受的信道增益因子的集合。

公开(公告)号：US07599706B2

公开(公告)日：2009-10-06

申请号：US11008894

申请日：2004-12-10

申请人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Hector Vayanos ,  Subramanya P. N. Rao

发明人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Hector Vayanos ,  Subramanya P. N. Rao

IPC分类号： H04B1/38 ,  H04B7/00 ,  H04M1/00

CPC分类号： H04W52/58 ,  H04L1/0001 ,  H04L1/0019 ,  H04L47/14 ,  H04W28/18 ,  H04W52/221 ,  H04W52/26 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

摘要： Various embodiments are provided for determining a set of acceptable transport format combinations for transmission on a current time frame. A set of acceptable modified rate power adjustment values is determined based on a maximum power level, an accumulated power commands and an initial power control command. A set of acceptable channel gain factors is determined based on the set of acceptable modified rate power adjustments values, and the set of acceptable transport format combinations is determined based on the set of acceptable channel gain factors. A possible set of modified rate power adjustment values is associated to a set of channel gain factors for determining the set of acceptable channel gain factors based on various design of a transmitter chain used for transmission of data from the mobile station.

摘要翻译： 提供了各种实施例，用于确定用于在当前时间帧上传输的一组可接受传输格式组合。 基于最大功率电平，累积功率命令和初始功率控制命令来确定一组可接受的修改率功率调整值。 基于可接受的修改率功率调整值的集合来确定一组可接受的信道增益因子，并且基于可接受的信道增益因子的集合来确定可接受传输格式组合的集合。 基于用于从移动台传输数据的发射机链的各种设计，可能的一组修改速率功率调整值与一组信道增益因子相关联，用于确定可接受的信道增益因子的集合。

公开(公告)号：US06882857B2

公开(公告)日：2005-04-19

申请号：US10305656

申请日：2002-11-26

申请人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Hector Vayanos ,  Subramanya P. N. Rao

发明人： Yi Zhang ,  Nitin Kasturi ,  Alkinoos Hector Vayanos ,  Subramanya P. N. Rao

IPC分类号： H04B7/005 ,  H04L12/56 ,  H04W28/18 ,  H04W52/22 ,  H04W52/26 ,  H04W52/36 ,  H04W52/50 ,  H04W52/58 ,  H04B1/38 ,  H04B7/00 ,  H04M1/00

CPC分类号： H04W52/58 ,  H04L1/0001 ,  H04L1/0019 ,  H04L47/14 ,  H04W28/18 ,  H04W52/221 ,  H04W52/26 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

摘要： Various embodiments are provided for determining a set of acceptable transport format combinations for transmission on a current time frame. A set of acceptable modified rate power adjustment values is determined based on a maximum power level, an accumulated power commands and an initial power control command. A set of acceptable channel gain factors is determined based on the set of acceptable modified rate power adjustments values, and the set of acceptable transport format combinations is determined based on the set of acceptable channel gain factors. A possible set of modified rate power adjustment values is associated to a set of channel gain factors for determining the set of acceptable channel gain factors based on various design of a transmitter chain used for transmission of data from the mobile station.

公开(公告)号：US07899134B2

公开(公告)日：2011-03-01

申请号：US11679285

申请日：2007-02-27

申请人： Nathaniel Lev Grossman ,  Gokhan Mergen ,  Nitin Kasturi

发明人： Nathaniel Lev Grossman ,  Gokhan Mergen ,  Nitin Kasturi

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H04L1/0036 ,  H04B2201/7071 ,  H04L25/03038

摘要： In general, this disclosure describes techniques for demodulating wireless signals. In particular, the techniques of this disclosure dynamically select between two or more demodulators based on channel quality information measured over a plurality of measurement periods. For example, a wireless communication device (WCD) may switch from a first demodulator to a second demodulator when the channel quality information associated with the demodulators indicates a better channel quality for the second demodulator than the first demodulator for a consecutive number of measurement periods. As another example, the WCD may compute, for each measurement period, the difference between the channel quality information associated with each of the demodulators, sum the differences, and switch demodulators when the total accumulation of the differences exceeds a threshold.

摘要翻译： 通常，本公开描述了用于解调无线信号的技术。 特别地，本公开的技术基于在多个测量周期中测量的信道质量信息，在两个或多个解调器之间动态地选择。 例如，当与解调器相关联的信道质量信息指示对于第二解调器的信道质量优于第一解调器时，连续数量的测量周期，无线通信设备（WCD）可以从第一解调器切换到第二解调器。 作为另一示例，WCD可以在每个测量周期中计算与每个解调器相关联的信道质量信息之间的差值，并且当差异的总累积超过阈值时对开关解调器进行求和。

公开(公告)号：US20100158175A1

公开(公告)日：2010-06-24

申请号：US12712924

申请日：2010-02-25

申请人： Gokhan Mergen ,  Paravathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

发明人： Gokhan Mergen ,  Paravathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

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。

公开(公告)号：US07702350B2

公开(公告)日：2010-04-20

申请号：US10387973

申请日：2003-03-12

申请人： Hyukjun Oh ,  Luca Blessent ,  Chih-Ping Hsu ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

发明人： Hyukjun Oh ,  Luca Blessent ,  Chih-Ping Hsu ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

IPC分类号： H04B7/00 ,  H04B1/00 ,  H01Q11/12

CPC分类号： H04W52/362 ,  H04W52/12 ,  H04W52/143 ,  H04W52/24 ,  H04W52/367

摘要： Techniques to quickly adjust an SIR target toward a final value needed to achieve a specified target BLER for a data transmission. The outer loop may be implemented with multiple modes. The SIR target may be maintained fixed in a hold mode, adjusted in large down steps to speed up convergence in an acquisition mode, and adjusted by a small down step and a large up step for good and erased blocks, respectively, in a tracking mode. Various schemes may be used to adjust the SIR target by larger down steps in the acquisition mode. These schemes may be used even if data is transmitted intermittently, the target BLER is set to a low value, and/or one or multiple transport channels are used for data transmission. The SIR target may be boosted by a particular amount upon transitioning from the acquisition mode to the tracking mode.

摘要翻译： 将SIR目标快速调整到实现数据传输的指定目标BLER所需的最终值的技术。 外部环路可以用多种模式来实现。 SIR目标可以在保持模式下保持固定，在大的下降步骤中调整以加速采集模式中的收敛，并且在跟踪模式下分别对于好的和擦除的块分别进行小的向下步长和大的上升步长的调整 。 可以使用各种方案来在采集模式中通过较大的下降步骤来调整SIR目标。 即使间歇地发送数据，目标BLER被设置为低值，和/或一个或多个传输信道用于数据传输，也可以使用这些方案。 在从采集模式转换到跟踪模式时，SIR目标可以被提升特定的量。

公开(公告)号：US07664519B2

公开(公告)日：2010-02-16

申请号：US10750302

申请日：2003-12-30

申请人： Chih-Ping Hsu ,  Parvathanathan Subrahmanya ,  Da-shan Shiu ,  Hyukjun Oh ,  Christopher C. Riddle ,  Nitin Kasturi

发明人： Chih-Ping Hsu ,  Parvathanathan Subrahmanya ,  Da-shan Shiu ,  Hyukjun Oh ,  Christopher C. Riddle ,  Nitin Kasturi

IPC分类号： H04B1/00 ,  H04B1/04 ,  H04Q7/20

CPC分类号： H04W52/12 ,  H04W52/34 ,  H04W52/36

摘要： Techniques are provided to control the transmit power for data transmission on multiple transport channels having different signal quality (SIR) targets. A single SIR target is maintained for all transport channels, and this SIR target is adjusted based only on active transport channels. For each update interval, a data processor processes at least one data block received in the current update interval on at least one of the transport channels and provides the status of each received data block. A controller increases the SIR target based on an up step if any received data block is erased and decreases the SIR target based on a down step if all received data blocks are good. If any received data block is erased, the down step used to adjust the SIR target may be set to the smallest down step size required by all transport channels with erased data blocks.

摘要翻译： 提供技术来控制具有不同信号质量（SIR）目标的多个传输信道上的数据传输的发射功率。 对于所有传输信道维持单个SIR目标，并且该SIR目标仅基于主动传输信道进行调整。 对于每个更新间隔，数据处理器处理在当前更新间隔中在至少一个传输信道上接收的至少一个数据块，并提供每个接收到的数据块的状态。 如果任何接收的数据块被擦除，则控制器基于上升步骤增加SIR目标，并且如果所有接收到的数据块都良好，则基于下降步骤降低SIR目标。 如果任何接收到的数据块被擦除，则用于调整SIR目标的下降步骤可以被设置为具有被擦除的数据块的所有传输信道所需的最小的下降步长。

公开(公告)号：US20090203339A1

公开(公告)日：2009-08-13

申请号：US12109436

申请日：2008-04-25

申请人： Gokhan Mergen ,  Manini S. Shah ,  Nathaniel Lev Grossman ,  Nitin Kasturi ,  Yan Li

发明人： Gokhan Mergen ,  Manini S. Shah ,  Nathaniel Lev Grossman ,  Nitin Kasturi ,  Yan Li

IPC分类号： H04B17/00

CPC分类号： H04L1/20 ,  H04L1/0026

摘要： Disclosed are methods and apparatus for predicting a channel quality indicator in a communication system, and in particular a delayed receiver. A disclosed method for determining the predictive channel quality indicator for a delayed receiver includes determining at least one channel quality indicator from a non-delayed receiver. The method also includes determining another channel quality indicator from the delayed receiver, and then calculating the predictive channel quality indicator for the delayed receiver through a function of the channel quality indicators from the non-delayed receiver and the channel quality indicator from the delayed receiver. Corresponding apparatus are also disclosed.

摘要翻译： 公开了用于预测通信系统中的信道质量指示符的方法和装置，特别是延迟的接收机。 用于确定延迟接收机的预测信道质量指示符的公开方法包括从非延迟接收机确定至少一个信道质量指示符。 该方法还包括从延迟的接收机确定另一信道质量指示符，然后通过来自非延迟接收机的信道质量指示符和来自延迟接收机的信道质量指示符的函数来计算延迟接收机的预测信道质量指示符。 还公开了相应的装置。

公开(公告)号：US20070110201A1

公开(公告)日：2007-05-17

申请号：US11489087

申请日：2006-07-18

申请人： Gokhan Mergen ,  Parvathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

发明人： Gokhan Mergen ,  Parvathanathan Subrahmanya ,  Vijayaraj Alilaghatta-Kantharaj ,  Nitin Kasturi

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。

公开(公告)号：US20060189342A1

公开(公告)日：2006-08-24

申请号：US11264950

申请日：2005-11-01

申请人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

发明人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/228 ,  H04W52/12 ,  H04W52/20 ,  H04W52/221 ,  H04W52/24 ,  H04W52/241 ,  H04W52/248 ,  H04W52/36

摘要： Techniques for power control that avoids outer loop wind-up are disclosed. In one aspect, wind-up of a target power level is detected, and the target power level is modified in response. In another aspect, unwinding of the target power level is detected, after which the target power level is determined without considering wind-up. Various other aspects are also presented, including wind-up and unwinding detection procedures, and target power level modification procedures. These aspects have the benefit of reducing the time that transmit power exceeds that which is necessary, thus increasing system capacity and performance, and mitigating misallocation of system resources.