公开(公告)号：WO2007053838A1

公开(公告)日：2007-05-10

申请号：PCT/US2006/060409

申请日：2006-10-31

Applicant: QUALCOMM Incorporated ,  SHESHADRI, Thejaswi, Bharadwaj, Madapushi ,  DONG, Brian ,  AMERGA, Messay ,  HSU, Chih-Ping ,  SUBRAHMANYA, Parvathanathan ,  ZHU, Xiaoming

Inventor： SHESHADRI, Thejaswi, Bharadwaj, Madapushi ,  DONG, Brian ,  AMERGA, Messay ,  HSU, Chih-Ping ,  SUBRAHMANYA, Parvathanathan ,  ZHU, Xiaoming

IPC: H04B1/707

CPC classification number: H04B1/7117 ,  B60L2200/26

Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a 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 identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.

Abstract translation: 耙式接收器手指分配器被配置为根据从发射机到耙式接收机的识别的信号路径的浓度，将耙机接收机手指分配到所识别的信号路径时间偏移之间的时间偏移。 根据示例性实施例，观察到在时间窗内具有时间偏移的多个识别的信号路径，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信号路径的集中分布，例如在脂肪路径条件期间，则在两个识别的信号路径之间的时间偏移处分配至少一个耙指。

公开(公告)号：WO2006084244A2

公开(公告)日：2006-08-10

申请号：PCT/US2006/004129

申请日：2006-01-31

Applicant: QUALCOMM INCORPORATED ,  VISVANATHAN, Arun ,  BUTALA, Amit ,  SUBRAHMANYA, Parvathanathan

Inventor： VISVANATHAN, Arun ,  BUTALA, Amit ,  SUBRAHMANYA, Parvathanathan

IPC: H04L1/00 ,  H04B7/005

CPC classification number: H04W52/12 ,  H04B1/7172 ,  H04L1/20 ,  H04L1/201 ,  H04L1/208 ,  H04W52/18 ,  H04W52/20 ,  H04W52/24 ,  H04W52/44

Abstract: 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.

Abstract translation: 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度量（例如零状态位）进行调整。

公开(公告)号：WO2006029403A1

公开(公告)日：2006-03-16

申请号：PCT/US2005/032482

申请日：2005-09-08

Applicant: QUALCOMM INCORPORATED ,  ODIGIE, Erumusele Olumuyiwa ,  KASTURI, Nitin ,  SUBRAHMANYA, Parvathanathan

Inventor： ODIGIE, Erumusele Olumuyiwa ,  KASTURI, Nitin ,  SUBRAHMANYA, Parvathanathan

IPC: H04B7/005

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

Abstract: 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.

Abstract translation: 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并且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。

公开(公告)号：WO2005107097A1

公开(公告)日：2005-11-10

申请号：PCT/US2005/009002

申请日：2005-03-18

Applicant: QUALCOMM INCORPORATED ,  OH, Hyukjun ,  SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin

Inventor： OH, Hyukjun ,  SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin

IPC: H04B7/005

CPC classification number: H04W52/12 ,  H04W52/28

Abstract: Techniques for controlling transmit power for a data transmission sent on multiple data channels, which may be intermittently active, are described. Each data channel is monitored for activity (e.g., based on an error correction code, received signaling information, received block energy, and so on) and deemed to be dormant or not dormant (e.g., based on the amount of elapsed time since activity was last detected on the data channel). A signal quality (SIR) target may be maintained for each non-dormant data channel and updated based on the status of received data blocks for the data channel. A final SIR target, used for power control of the data transmission, may be set to the highest SIR target among the SIR targets for the non-dormant data channels. The final SIR target may also be updated directly based on the status of received data blocks for the non-dormant data channels.

Abstract translation: 描述了用于控制在可能间歇地活动的多个数据信道上发送的数据传输的发送功率的技术。 监视每个数据信道的活动（例如，基于纠错码，接收的信令信息，接收的块能量等等），并被认为是休眠或不休眠（例如，基于从活动以来的经过时间量 最后在数据通道上检测到）。 可以为每个非休眠数据信道维持信号质量（SIR）目标，并且基于数据信道的接收数据块的状态来更新。 可以将用于数据传输的功率控制的最终SIR目标设置为非休眠数据信道的SIR目标中的最高SIR目标。 也可以基于非休眠数据信道的接收数据块的状态来直接更新最终SIR目标。

公开(公告)号：WO2005072001A3

公开(公告)日：2005-08-04

申请号：PCT/US2005/000822

申请日：2005-01-11

Applicant: QUALCOMM INCORPORATED ,  SUBRAHMANYA, Parvathanathan

Inventor： SUBRAHMANYA, Parvathanathan

IPC: H04Q7/38

Abstract: A wireless communications network (120) responds to each incoming call placed to a wireless communications device (134) by transmitting a call-paging message (418) within a corresponding partition of a digital radio frame of prescribed format. Responsive to each occurrence of a broadcast event (404), the network transmits (414) a repeating broadcast-paging message announcing the availability of broadcast content from the network. The broadcast-paging message is transmitted multiple times within each digital radio frame. Another sequence (500) describes WCD operation in this network. Responsive to wakeup (502) from sleep, the WCD detects (509) received signal quality. The WCD also receives (510) 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 with the detected signal quality.

公开(公告)号：WO2003107554A1

公开(公告)日：2003-12-24

申请号：PCT/US2003/018212

申请日：2003-06-10

Applicant: QUALCOMM INCORPORATED

Inventor： AMERGA, Messay ,  NAGPAL, Vikas ,  NEW, Wen Jing ,  RAO, Subramanya, P. ,  SUBRAHMANYA, Parvathanathan

IPC: H04B1/707

CPC classification number: H04W48/16 ,  H04B1/707 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/318 ,  H04B17/382 ,  H04L2027/0034 ,  H04W24/00 ,  H04W52/0245 ,  Y02D70/1222 ,  Y02D70/40

Abstract: Techniques for reducing the time required for frequency scan in acquisition are disclosed. In one aspect, received power measurements are made at one or more of the possible carrier frequencies and system search is performed on one or more of those frequencies when the power measurement exceeds a threshold. In another aspect, the power is measured at one or more frequencies in a band of frequencies surrounding a frequency at which the measured power exceeded a threshold. If the measured power at one or more of the frequencies in the band exceeds a second threshold, a system search is performed at one or more of those frequencies. In yet another aspect, frequencies meeting certain criteria are sorted in order of measured power prior to system search or further power measurement, and subsequent processing is performed in order of descending measured power. Various other aspects are also presented. These aspects have the benefit of reducing acquisition time, which results in faster system access and allows for more efficient use of system resources.

Abstract translation: 公开了减少采集​​中频率扫描所需时间的技术。 在一个方面，在一个或多个可能的载波频率进行接收功率测量，并且当功率测量超过阈值时，对这些频率中的一个或多个进行系统搜索。 在另一方面，在测量功率超过阈值的频率周围的频率带中的一个或多个频率处测量功率。 如果频带中的一个或多个频率处的测量功率超过第二阈值，则在这些频率中的一个或多个频率处执行系统搜索。 在另一方面，满足某些标准的频率在系统搜索或进一步功率测量之前按照测量的功率的顺序进行分类，并且随后的处理按照下降的测量功率的顺序执行。 还提出了各种其他方面。 这些方面具有减少采集时间的优点，这导致更快的系统访问并且允许更有效地使用系统资源。

公开(公告)号：WO2003024046A2

公开(公告)日：2003-03-20

申请号：PCT/US2002/027960

申请日：2002-08-29

Applicant: QUALCOMM, INCORPORATED

Inventor： SUBRAHMANYA, Parvathanathan ,  SENDONARIS, Andrew

IPC: H04L27/00

CPC classification number: H04L27/2332 ,  H04B2201/70701 ,  H04L2027/0055 ,  H04L2027/0065 ,  H04L2027/0081 ,  H04L2027/0087

Abstract: Techniques to acquire and track a received signal instance (or multipath) based on one or more transmitted pilots. In an aspect, a frequency tracking loop is provided to acquire and track the multipath, and supports a number of loop modes ( e.g. , acquisition and tracking modes). Each loop mode may be associated with a respective frequency detector and a set of values for a set of elements in the loop. In another aspect, several frequency detectors are provided for deriving estimates of the frequency error in the downconversion of the multipath ( e.g. , from radio frequency to baseband). In one design, maximum likelihood estimates of the frequency error are derived based on the recovered pilot symbols. In another design, the frequency error estimates for the multipath are derived based on the frequency error estimated for each transmitted signal.

Abstract translation: 基于一个或多个传输的导频获取和跟踪接收的信号的技术。 在一方面，提供频率跟踪环路并且支持多种环路模式（例如采集和跟踪模式）。 每个循环模式可以与相应的频率检测器和一组循环中的元件的值相关联。 在另一方面，提供了几个频率检测器用于导出下变频中的频率误差的估计（例如，从射频到基带）。 在一种设计中，基于恢复的导频符号导出频率误差的最大似然估计。 在另一种设计中，基于针对每个发射信号估计的频率误差导出多路径的频率误差估计。

公开(公告)号：WO2002061963A2

公开(公告)日：2002-08-08

申请号：PCT/US2002/000682

申请日：2002-01-11

Applicant: QUALCOMM INCORPORATED

Inventor： RICK, Roland ,  SUBRAHMANYA, Parvathanathan ,  BUTLER, Brian ,  PATEL, Shimman ,  EKVETCHAVAT, Thunachate

IPC: H04B1/707

CPC classification number: H04B1/7085 ,  H04B1/7115 ,  H04B7/0667 ,  H04B7/0697 ,  H04B2201/70701

Abstract: In an antenna diverstiy environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-neglible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time trackin loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different times offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.

Abstract translation: 在天线分叉环境中，接收机手指的定时偏移基于基站发射信号的接收峰值的定时偏移。 在具有不可忽略的多路径间隔的系统中，基站发射信号的接收峰值的定时偏移不一定在相同的位置。 在一个实施例中，用于来自每个基站天线的信号的解调元件使用相同的偏移量来解调和确定基于在定时偏移之前和定时偏移之后的导频信号采样的误差信号。 误差信号被平均化，并被时间跟踪环路用于跟踪输入信号。 在另一个实施例中，用于来自每个基站天线的信号的解调元件独立地对每个手指的不同时间偏移量跟踪信号。 优选实施例取决于基站用于将数据复用到多个发射天线上的方法。