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11. 发明授权

US08576965B2 Methods and systems for interference cancellation in multi-mode coexistence modems 有权
标题翻译：多模式共存调制解调器干扰消除的方法和系统
公开(公告)号：US08576965B2
公开(公告)日：2013-11-05
申请号：US12831462
申请日：2010-07-07
申请人： Madihally J. Narasimha , Je Woo Kim , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Madihally J. Narasimha , Je Woo Kim , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B1/10
CPC分类号： H04B1/525 , G01S19/21 , 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.
摘要翻译：本公开的某些实施例支持支持不同无线电技术共存的多模式无线调制解调器中的干扰消除技术。

12. 发明申请

US20110103431A1 METHODS AND SYSTEMS FOR INTERFERENCE CANCELLATION IN MULTI-MODE COEXISTENCE MODEMS 有权
标题翻译：用于多模式共存模式干扰消除的方法和系统
公开(公告)号：US20110103431A1
公开(公告)日：2011-05-05
申请号：US12831462
申请日：2010-07-07
申请人： Madihally J. Narasimha , Je Woo Kim , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Madihally J. Narasimha , Je Woo Kim , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B1/10 , H04B1/707
CPC分类号： H04B1/525 , G01S19/21 , 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.
摘要翻译：本公开的某些实施例支持支持不同无线电技术共存的多模式无线调制解调器中的干扰消除技术。

13. 发明授权

US07899480B2 Apparatus, system, and method for managing transmission power in a wireless communication system 有权
标题翻译：用于在无线通信系统中管理传输功率的装置，系统和方法
公开(公告)号：US07899480B2
公开(公告)日：2011-03-01
申请号：US11217242
申请日：2005-08-31
申请人： Erumusele O. Odigie , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Erumusele O. Odigie , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B7/00
CPC分类号： H04W52/221 , H04W52/223 , H04W52/267 , H04W52/346 , H04W52/367 , Y02D70/124
摘要： An apparatus, system, and method efficiently manage transmission power in a user equipment (UE) device by maintaining and applying an authorized power level to determine a transmission power level after a power limited transmission and before a new power control command has been received. The UE device maintains the authorized power level by monitoring and adjusting the authorized power level based on received power control commands. After a power limited transmission where the maximum power level is less than the authorized power level, the UE device determines the transmission power level for the next transmission based on the authorized power level. Accordingly, after the power limiting situation has ceased, the UE device transmits at the optimum power level eliminating the inefficiencies of transmitting at a lower than authorized power before the next power control command is received.
摘要翻译：一种装置，系统和方法通过维持和应用授权功率电平来有效地管理用户设备（UE）设备中的发射功率，以确定在功率限制传输之后和在接收到新的功率控制命令之前的发射功率电平。 UE设备通过基于接收到的功率控制命令监视和调整授权功率电平来维持授权功率电平。在最大功率电平小于授权功率电平的功率限制传输之后，UE设备基于授权功率电平确定用于下一次传输的传输功率电平。因此，在功率限制情况已经停止之后，UE接收到下一个功率控制命令之前，以最佳功率电平发送消除低于授权功率的低效发送的低效率。

14. 发明申请

US20070110127A1 Method and apparatus for deriving a channel impulse response estimate for a wireless channel 有权
标题翻译：用于导出无线信道的信道脉冲响应估计的方法和装置
公开(公告)号：US20070110127A1
公开(公告)日：2007-05-17
申请号：US11399886
申请日：2006-04-07
申请人： Gokhan Mergen , Vignesh Sethuraman , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Gokhan Mergen , Vignesh Sethuraman , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B1/00 , H04L27/06 , H04B1/10
CPC分类号： H04L25/0216 , H04L25/0218
摘要： Techniques for deriving a channel impulse response estimate (CIRE) having improved quality are described. A first CIRE with multiple channel taps is obtained based on (1) an initial CIRE derived from a received pilot or (2) a filtered CIRE derived from the initial CIRE. In one aspect, the channel taps in the first CIRE are scaled with multiple scaling factors to obtain a second CIRE. For point-wise LMMSE scaling, the energy of each channel tap is estimated. The noise energy for the channel taps is also estimated, e.g., based on energies of channel taps on one or both edges of the first CIRE. Each channel tap is scaled based on a scaling factor determined by the energy of that channel tap and the noise energy. Each channel tap with energy below a threshold may be set to zero. In another aspect, the second CIRE is obtained by zeroing out selected ones of the channel taps in the first CIRE.
摘要翻译：描述了用于导出具有改进的质量的信道脉冲响应估计（CIRE）的技术。基于（1）从接收到的导频导出的初始CIRE或（2）从初始CIRE导出的滤波CIRE，获得具有多信道抽头的第一CIRE。在一个方面，第一CIRE中的信道抽头被多个缩放因子缩放以获得第二CIRE。对于逐点LMMSE缩放，估计每个通道抽头的能量。也可以例如基于第一CIRE的一个或两个边缘上的信道抽头的能量来估计信道抽头的噪声能量。每个通道抽头基于由该通道抽头的能量和噪声能量确定的缩放因子进行缩放。能量低于阈值的每个通道抽头可以设置为零。在另一方面，第二CIRE是通过对第一CIRE中的选通的信道抽头进行归零而获得的。

15. 发明申请

US20050249149A1 Mitigation of transmit power spikes for a power-controlled data transmission in a wireless communication system 有权
标题翻译：减轻无线通信系统中功率控制数据传输的发射功率尖峰
公开(公告)号：US20050249149A1
公开(公告)日：2005-11-10
申请号：US10841299
申请日：2004-05-07
申请人： Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B7/005 , H04W52/22 , H04W52/36 , H04Q7/00
CPC分类号： H04W52/221 , H04W52/146 , H04W52/367
摘要： Techniques to mitigate spikes in transmit power, by reducing the magnitude and/or duration of the spikes, are described. Initially, power control is performed in a normal manner and in accordance with a transmit power control (TPC) scheme. If a (e.g., upward) transmit power spike is detected, the power control is performed in a manner to mitigate the adverse effects of the spike and in accordance with another TPC scheme. An upward transmit power spike may be detected, e.g., if a predetermined number of consecutive TPC commands in the upward direction is obtained for increasing transmit power. The upward transmit power spike may be mitigated by limiting the transmit power, reducing the rate of transmit power adjustment in the upward direction, delaying and/or filtering TPC decisions used for transmit power adjustment, preventing upward adjustment of transmit power, and so on. Multiple states may be defined and used to facilitate power control with spike mitigation.
摘要翻译：描述了通过减小尖峰的幅度和/或持续时间来减轻发射功率尖峰的技术。最初，按照发送功率控制（TPC）方式，以正常的方式进行功率控制。如果检测到（例如，向上）发射功率尖峰，则以减轻尖峰的不利影响并根据另一TPC方案的方式执行功率控制。可以检测向上的发送功率尖峰，例如，如果获得了向上方向上的预定数量的连续TPC命令以增加发射功率。通过限制发射功率，降低向上方向的发射功率调整速率，延迟和/或滤波用于发射功率调整的TPC决定，防止发射功率的向上调整等，可以减轻向上发射功率尖峰。多个状态可以被定义并用于通过尖峰减轻来促进功率控制。

16. 发明申请

US20070110201A1 Method and apparatus for filtering noisy estimates to reduce estimation errors 有权
标题翻译：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：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。

17. 发明申请

US20060189342A1 Power control avoiding outer loop wind-up 有权
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.

18. 发明授权

US07010321B2 Power control avoiding outer loop wind-up 有权
公开(公告)号：US07010321B2
公开(公告)日：2006-03-07
申请号：US10067608
申请日：2002-02-04
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： 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.

19. 发明授权

US08359060B2 Apparatus, system, and method for managing transmission power in a wireless communication system 有权
标题翻译：用于在无线通信系统中管理传输功率的装置，系统和方法
公开(公告)号：US08359060B2
公开(公告)日：2013-01-22
申请号：US13036877
申请日：2011-02-28
申请人： Erumusele O. Odigie , Nitin Kasturi , Parvathanathan Subrahmanya
发明人： Erumusele O. Odigie , Nitin Kasturi , Parvathanathan Subrahmanya
IPC分类号： H04B7/00
CPC分类号： H04W52/221 , H04W52/223 , H04W52/267 , H04W52/346 , H04W52/367 , Y02D70/124
摘要： An apparatus, system, and method efficiently manage transmission power in a user equipment (UE) device by maintaining and applying an authorized power level to determine a transmission power level after a power limited transmission and before a new power control command has been received. The UE device maintains the authorized power level by monitoring and adjusting the authorized power level based on received power control commands. After a power limited transmission where the maximum power level is less than the authorized power level, the UE device determines the transmission power level for the next transmission based on the authorized power level. Accordingly, after the power limiting situation has ceased, the UE device transmits at the optimum power level eliminating the inefficiencies of transmitting at a lower than authorized power before the next power control command is received.
摘要翻译：一种装置，系统和方法通过维持和应用授权功率电平来有效地管理用户设备（UE）设备中的发射功率，以确定在功率限制传输之后和在接收到新的功率控制命令之前的发射功率电平。 UE设备通过基于接收到的功率控制命令监视和调整授权功率电平来维持授权功率电平。在最大功率电平小于授权功率电平的功率限制传输之后，UE设备基于授权功率电平确定用于下一次传输的传输功率电平。因此，在功率限制情况已经停止之后，UE接收到下一个功率控制命令之前，以最佳功率电平发送消除低于授权功率的低效发送的低效率。

20. 发明授权

US07966032B2 Power control avoiding outer loop wind-up 有权
标题翻译：电源控制避免外圈卷绕
公开(公告)号：US07966032B2
公开(公告)日：2011-06-21
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： 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.
摘要翻译：公开了避免外圈卷绕的功率控制技术。在一个方面，检测目标功率电平的上升，并且响应地改变目标功率电平。在另一方面，检测目标功率电平的展开，之后在不考虑卷绕的情况下确定目标功率电平。还提出了各种其他方面，包括卷绕和展开检测程序以及目标功率级别修改程序。这些方面具有减少发射功率超过必要时间的优点，从而增加系统容量和性能，并减轻系统资源的分配不当。

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