公开(公告)号：JP2012151865A

公开(公告)日：2012-08-09

申请号：JP2012043265

申请日：2012-02-29

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MAGEN GOKHAN ,  SUBRAHMANYA PARVATHANATHAN ,  VIJAYARAJ ALILAGHATTA-KANTHARAJ ,  NITIN KASTURI

IPC: H04B1/712 ,  H03H17/02 ,  H03H17/04 ,  H03H21/00 ,  H04B7/005

CPC classification number: H04L25/025 ,  H04B17/3913 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/03038

Abstract: PROBLEM TO BE SOLVED: To filter noisy estimates to reduce estimation errors.SOLUTION: Input samples y(k) from a receiver are sent to a channel estimator 310 and to a data finite impulse response (FIR) filter 360. Within the channel estimator 310, an initial channel estimator 320 derives a channel impulse response estimate (CIRE) for a wireless channel between a base station and a wireless device; a channel IIR filter 330 is updated; and a computation unit 350 derives equalizer coefficients. Filtering is performed by the FIR filter 360 using data of these coefficients.

Abstract translation: 要解决的问题：过滤噪声估计以减少估计误差。 解决方案：将来自接收机的输入样本y（k）发送到信道估计器310和数据有限脉冲响应（FIR）滤波器360.在信道估计器310内，初始信道估计器320导出信道脉冲响应 对基站和无线设备之间的无线信道进行估计（CIRE）; 通道IIR滤波器330被更新; 并且计算单元350导出均衡器系数。 使用这些系数的数据由FIR滤波器360进行滤波。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012105282A

公开(公告)日：2012-05-31

申请号：JP2011258923

申请日：2011-11-28

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SHESHADRI THEJASWI BHARADWAJ MADAPUSHI ,  BRIAN DONG ,  MESSAY AMERGA ,  HSU CHIH-PING ,  SUBRAHMANYA PARVATHANATHAN ,  ZHU XIAOMING

IPC: H04B1/7115 ,  H04B1/7117

CPC classification number: H04B1/7117 ,  B60L2200/26

Abstract: PROBLEM TO BE SOLVED: To provide a rake receiver finger assignor configured to assign a rake receiver finger to one time offset of identified signal path time offsets in accordance with the concentration of identified signal paths from a transmitter to a rake receiver.SOLUTION: The 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 the identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake receiver is assigned to one time offset between the two identified signal paths.

Abstract translation: 要解决的问题：提供一种耙式接收器手指分配器，其配置为根据从发射机到耙式接收机的识别的信号路径的集中度，将耙式接收机手指分配给所识别的信号路径时间偏移的一个时间偏移。

解决方案：观察到在时间窗内具有时间偏移的识别的信号路径的数量，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诸如在脂肪路径条件期间的信号路径的集中分布，则至少一个耙式接收机被分配给两个识别的信号路径之间的一个时间偏移。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2013048418A

公开(公告)日：2013-03-07

申请号：JP2012187900

申请日：2012-08-28

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： YAN LI ,  SUBRAHMANYA PARVATHANATHAN ,  NAVEED ZAMAN

IPC: H04B1/7083 ,  H04B1/709 ,  H04W56/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/709

Abstract: PROBLEM TO BE SOLVED: To provide efficient searchers to reduce the integrated circuit area and the power consumption in a step2 search of the W-CDMA(R) three-step search method.SOLUTION: In a mobile terminal of a CDMA system, I and Q signals received by an RF downconverter are correlated by a first correlator with a primary synchronization code on a primary synchronization channel, and correlated by a second correlator 412 with a secondary synchronization code on a secondary synchronization channel. An energy calculator 405 and a maximum energy detector 406 use the I and Q signals correlated with both the primary and secondary synchronization channels, to detect the most probable scrambling code group of secondary synchronization codes.

Abstract translation: 要解决的问题：在W-CDMA（R）三步搜索方法的步骤2搜索中，提供有效的搜索器来减少集成电路面积和功耗。 解决方案：在CDMA系统的移动终端中，由RF下变频器接收的I和Q信号由主同步信道上的主同步码的第一相关器相关，并由第二相关器412与二次相关器相关联 辅同步通道上的同步码。 能量计算器405和最大能量检测器406使用与主同步信道和次同步信道相关的I和Q信号来检测次同步码的最可能的扰码组。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012090299A

公开(公告)日：2012-05-10

申请号：JP2011257825

申请日：2011-11-25

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SUBRAHMANYA PARVATHANATHAN

IPC: H04W52/02 ,  H04W4/00 ,  H04W4/06 ,  H04W68/00

CPC classification number: H04W68/00 ,  H04W52/0216 ,  Y02D70/00

Abstract: PROBLEM TO BE SOLVED: To minimize power consumption by a wireless communications device (WCD) which receives a broadcast-paging message in addition to an existing call-paging message.SOLUTION: Quickly responsive to wakeup from sleep, the WCD detects received signal quality. The WCD also receives: scheduled network transmission of a call-paging message; and a number of instances (at least one) of a repeating network transmitted broadcast-paging message that occurs multiple times for each scheduled transmission of the call-paging message. This number varies inversely proportionally with the detected signal quality.

Abstract translation: 要解决的问题：除了现有的呼叫寻呼消息之外，还接收除广播寻呼消息之外的无线通信设备（WCD）的功耗最小化。 解决方案：快速响应睡眠唤醒，WCD检测接收到的信号质量。 WCD还接收：呼叫寻呼消息的调度网络传输; 以及针对呼叫寻呼消息的每个调度传输多次出现的多个重复网络发送广播寻呼消息的实例（至少一个）。 该数字与检测到的信号质量成反比变化。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010233244A

公开(公告)日：2010-10-14

申请号：JP2010126906

申请日：2010-06-02

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： ODIGIE ERUMUSELE OLUMUYIWA ,  KASTURI NITIN ,  SUBRAHMANYA PARVATHANATHAN

IPC: H04W52/34 ,  H04B1/04 ,  H04W52/22 ,  H04W52/26 ,  H04W52/36

CPC classification number: H04W52/221 ,  H04W52/223 ,  H04W52/267 ,  H04W52/346 ,  H04W52/367 ,  Y02D70/12 ,  Y02D70/124

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus, system, and method for managing transmission power in a wireless communication system. SOLUTION: An apparatus, system, and method efficiently manage transmission power in 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 is 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. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于管理无线通信系统中的发送功率的装置，系统和方法。 解决方案：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）设备中的传输功率，以确定功率限制传输之后的传输功率电平，并且在新的功率控制命令为 接收。 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。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2012147455A

公开(公告)日：2012-08-02

申请号：JP2012043266

申请日：2012-02-29

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MAGEN GOKHAN ,  SUBRAHMANYA PARVATHANATHAN ,  VIJAYARAJ ALILAGHATTA-KANTHARAJ ,  NITIN KASTURI

IPC: H04B1/711

CPC classification number: H04L25/025 ,  H04B17/3913 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/03038

Abstract: PROBLEM TO BE SOLVED: To filter noisy estimates to reduce estimation errors.SOLUTION: 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.

Abstract translation: 要解决的问题：过滤噪声估计以减少估计误差。 解决方案：使用具有至少一个系数的无限脉冲响应（IIR）滤波器对输入值的序列（例如，对于初始信道脉冲响应估计（CIRE））进行滤波以获得输出值的序列（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。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012050094A

公开(公告)日：2012-03-08

申请号：JP2011197244

申请日：2011-09-09

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MAGEN GOKHAN ,  SETHURAMAN VIGNESH ,  NITIN KASTURI ,  SUBRAHMANYA PARVATHANATHAN

IPC: H04B1/7097

CPC classification number: H04L25/0216 ,  H04L25/0218

Abstract: PROBLEM TO BE SOLVED: To provide a method for deriving a channel impulse response estimate (CIRE) with improved quality.SOLUTION: 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. 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.

Abstract translation: 要解决的问题：提供一种以提高质量导出信道脉冲响应估计（CIRE）的方法。 解决方案：基于（1）从接收到的导频导出的初始CIRE或（2）从初始CIRE导出的经滤波的CIRE，获得具有多个信道抽头的第一CIRE。 在第一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。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010213341A

公开(公告)日：2010-09-24

申请号：JP2010111292

申请日：2010-05-13

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SUBRAHMANYA PARVATHANATHAN

IPC: H04W52/02 ,  H04W4/00 ,  H04W4/06 ,  H04W68/00

CPC classification number: H04W68/00 ,  H04W52/0216 ,  Y02D70/00

Abstract: PROBLEM TO BE SOLVED: To provide technologies with which a wireless communication device (WCD) can efficiently receive call/broadcast paging messages from base stations. SOLUTION: Responsive to wake-up (502) from sleep, a WCD detects (509) received signal quality. The WCD also receives (510) scheduled network transmission of a call-paging message and the number of instances of a repeating network transmitted broadcast-paging message that occurs multiple times for each scheduled transmission of the call-paging message. This number varies inversely with the signal quality. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供无线通信设备（WCD）可以有效地从基站接收呼叫/广播寻呼消息的技术。 解决方案：响应睡眠唤醒（502），WCD检测（509）接收到的信号质量。 WCD还接收呼叫寻呼消息的（510）调度的网络传输和针对呼叫 - 寻呼消息的每个调度传输多次发生的重复网络发送的广播 - 寻呼消息的实例数。 该数字与信号质量成反比。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2013243677A

公开(公告)日：2013-12-05

申请号：JP2013118677

申请日：2013-06-05

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： QIANG SHEN ,  NATHAN D YEE ,  SUBRAHMANYA PARVATHANATHAN

IPC: H04B1/7107 ,  H04J13/00

CPC classification number: H04B1/7107 ,  H04B1/70735 ,  H04B1/71072 ,  H04B2201/70701

Abstract: PROBLEM TO BE SOLVED: To properly mitigate interference from the SCH and other similar common channels in order to achieve optimal network performance.SOLUTION: A mobile station configured to perform common channel cancellation includes: a parameter estimation unit configured to estimate (702) parameters for generating a common channel error; a common channel generation unit configured to generate (704) the common channel error on the basis of the estimated parameters; and an adder configured to subtract (706) the common channel error from received data samples.

Abstract translation: 要解决的问题：适当地减轻SCH和其他类似公共信道的干扰，以实现最佳网络性能。解决方案：被配置为执行公共信道消除的移动台包括：参数估计单元，被配置为估计（702） 产生公共通道错误; 公共信道生成单元，被配置为基于所估计的参数生成（704）公共信道误差; 以及被配置为从接收的数据样本中减去（706）公共信道误差的加法器。

公开(公告)号：JP2011010324A

公开(公告)日：2011-01-13

申请号：JP2010166253

申请日：2010-07-23

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SUBRAHMANYA PARVATHANATHAN

IPC: H04B7/155 ,  H04L1/16 ,  G08C15/00 ,  G08C25/00 ,  G08C25/02 ,  H04B20060101 ,  H04B7/26 ,  H04L1/00 ,  H04L1/14 ,  H04L1/18 ,  H04L29/08 ,  H04Q7/38 ,  H04W28/04

CPC classification number: H04L1/1809 ,  H04L1/0078 ,  H04L1/1671

Abstract: PROBLEM TO BE SOLVED: To obtain a method and an apparatus for reducing latency for the recovery of a communication error.SOLUTION: One message is transmitted as two message portions of the first message portion transmitted at a first power level and the second message portion transmitted at a second lower power level. The first power level is selected to provide a prescribed probability that the first message portion may be successfully received. Alternatively, the first and second message portions are transmitted so that the first message portion has larger energy per bit than that of the second message portion. At a first time, the first message portion is received. At a second time where the second time has a known relationship with the first time, a signal is received from which the second message portion is not reliably obtained. A receiving device recognizes that the second message portion has not properly received and requests the re-transmission of at least the second message portion.

Abstract translation: 要解决的问题：获得用于减少恢复通信错误的等待时间的方法和装置。解决方案：一个消息作为以第一功率电平发送的第一消息部分的两个消息部分被发送，并且第二消息部分被发送 在第二较低功率水平。 选择第一功率电平以提供第一消息部分可以被成功接收的规定概率。 或者，发送第一和第二消息部分，使得第一消息部分具有比第二消息部分更大的每比特能量。 第一次接收第一消息部分。 在第二次与第一次具有已知关系的第二时间，接收到不可靠地获得第二消息部分的信号。 接收设备识别出第二消息部分未被正确接收，并且请求至少第二消息部分的重发。