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    APPARATUS AND METHODS FOR LOW POWER SENSING OF COMMUNICATION ACCESS TECHNOLOGIES
    1.
    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

    Applicant: Dilip Krishnaswamy ,  Parag M. Kanade ,  Parvathanathan Subrahmanya

    Inventor： Dilip Krishnaswamy ,  Parag M. Kanade ,  Parvathanathan Subrahmanya

    IPC: G08C17/00

    CPC classification number: H04W52/028 ,  H04W48/16 ,  H04W48/18 ,  H04W52/0229 ,  H04W88/06 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

    Abstract: 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.

    Abstract translation: 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。

    Apparatus and methods for low power sensing of communication access technologies
    2.
    发明授权
    Apparatus and methods for low power sensing of communication access technologies 有权
    用于通信接入技术的低功率感测的装置和方法

    公开(公告)号：US09060336B2

    公开(公告)日：2015-06-16

    申请号：US12610296

    申请日：2009-10-31

    Applicant: Dilip Krishnaswamy ,  Parag M. Kanade ,  Parvathanathan Subrahmanya

    Inventor： Dilip Krishnaswamy ,  Parag M. Kanade ,  Parvathanathan Subrahmanya

    IPC: H04W52/02 ,  H04W48/16 ,  H04W48/18

    CPC classification number: H04W52/028 ,  H04W48/16 ,  H04W48/18 ,  H04W52/0229 ,  H04W88/06 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

    Abstract: 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.

    Abstract translation: 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。

    INFRASTRUCTURE-UNASSISTED INTER-DEVICE WIRELESS WIDE AREA NETWORK HANDOFF
    4.
    发明申请
    INFRASTRUCTURE-UNASSISTED INTER-DEVICE WIRELESS WIDE AREA NETWORK HANDOFF 有权
    基础设施 - 不具备的设备无线宽带网络切换

    公开(公告)号：US20120294275A1

    公开(公告)日：2012-11-22

    申请号：US13111114

    申请日：2011-05-19

    Applicant: Dilip Krishnaswamy ,  Parvathanathan Subrahmanya

    Inventor： Dilip Krishnaswamy ,  Parvathanathan Subrahmanya

    IPC: H04W4/00

    CPC classification number: H04W36/00 ,  H04M1/006 ,  H04W8/26 ,  H04W84/005 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06

    Abstract: Aspects describe infrastructure unassisted inter-device handoff. A method performed by a wireless communications apparatus for inter-device handoff is disclosed. A wireless communications apparatus that performs a network unassisted inter-device handoff is disclosed. A computer program product comprising a computer-readable medium that includes codes for carrying out inter-device handoff is disclosed. At least one processor configured to perform a network unassisted communication handoff is disclosed.

    Abstract translation: 方面描述了基础设施无协调的设备间切换。 公开了一种由用于设备间切换的无线通信装置执行的方法。 公开了一种执行网络非辅助设备间切换的无线通信装置。 公开了一种计算机程序产品，其包括包括用于执行设备间切换的代码的计算机可读介质。 公开了至少一个被配置为执行网络非辅助通信切换的处理器。

    Method and apparatus for filtering noisy estimates to reduce estimation errors
    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

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

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

    IPC: H04B1/10

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

    Abstract: 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.

    Abstract translation: 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。

    SENSOR USES IN COMMUNICATION SYSTEMS
    8.
    发明申请
    SENSOR USES IN COMMUNICATION SYSTEMS 有权
    传感器在通信系统中的应用

    公开(公告)号：US20100304761A1

    公开(公告)日：2010-12-02

    申请号：US12473190

    申请日：2009-05-27

    Applicant: Cristina A. Seibert ,  Douglas Neal Rowitch ,  Parvathanathan Subrahmanya ,  Leonid Sheynblat

    Inventor： Cristina A. Seibert ,  Douglas Neal Rowitch ,  Parvathanathan Subrahmanya ,  Leonid Sheynblat

    IPC: H04W52/04 ,  H04W64/00

    CPC classification number: H04W52/0254 ,  H03G3/3078 ,  H04B1/7085 ,  H04B1/7117 ,  H04L25/03019 ,  H04L2025/03566 ,  H04W48/16 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/40

    Abstract: 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.

    Abstract translation: 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。

    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
    9.
    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

    Applicant: Francesco Grilli ,  Charles E. Wheatley, III ,  Serge D. Willenegger ,  Parvathanathan Subrahmanya

    Inventor： Francesco Grilli ,  Charles E. Wheatley, III ,  Serge D. Willenegger ,  Parvathanathan Subrahmanya

    IPC: H04W4/00

    CPC classification number: H04W56/002 ,  H04B7/2668 ,  H04B2201/70702 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0045 ,  H04W92/20

    Abstract: 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).

    Abstract translation: 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）。

    Method and apparatus for filtering noisy estimates to reduce estimation errors
    10.
    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：US07746970B2

    公开(公告)日：2010-06-29

    申请号：US11489087

    申请日：2006-07-18

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

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

    IPC: H04B1/10

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

    Abstract: 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.

    Abstract translation: 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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