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    Method and apparatus for forward power control in a communication system
    1.
    发明授权
    Method and apparatus for forward power control in a communication system 失效

    公开(公告)号：US07515580B2

    公开(公告)日：2009-04-07

    申请号：US10866296

    申请日：2004-06-10

    申请人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    发明人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    IPC分类号： H04J3/24

    CPC分类号： H04W52/24 ,  H04W52/26 ,  H04W52/267 ,  H04W52/286 ,  H04W68/00 ,  H04W72/1231

    摘要： In a data communication system capable of variable rate transmission, the data rate is determined by the largest C/I measurement of the forward link signals as measured at the Access Terminal. In one embodiment, the data transmission is scheduled based on an Access Terminal initiated forward power control, which reduces forward link rate quantization loss due to excess transmit power. The Access Terminal reports to the Access Point the excess C/I estimate for the selected rate. The Access Point then reduces its transmit power by an appropriate amount when serving that Access Terminal. In another embodiment, the data transmission is scheduled based on an Access Point initiated forward power control. The Access Point varies its transmit power over time either randomly or in synchronism with neighboring Access Points in the communication system, which enables an increase in the throughput achieved by users that receive a significant amount of interference.

    Method and apparatus for transmit power modulation in a wireless communications system
    2.
    发明授权
    Method and apparatus for transmit power modulation in a wireless communications system 有权
    无线通信系统中发射功率调制的方法和装置

    公开(公告)号：US06873831B2

    公开(公告)日：2005-03-29

    申请号：US10113283

    申请日：2002-04-01

    申请人： Rashid A. Attar ,  Charles E. Wheatley, III

    发明人： Rashid A. Attar ,  Charles E. Wheatley, III

    IPC分类号： H04B1/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/10 ,  H04B7/26 ,  H04B1/04 ,  H01Q11/12

    CPC分类号： H04B7/0615 ,  H04B7/0491 ,  H04B7/0617

    摘要： An apparatus according to one embodiment of the invention includes a transmitter. The transmitter receives an RF signal and produces at least two modulated signals based on the RF signal. Each of the modulated signals is coupled to a respective antenna. The combined radiation pattern of the antennas varies in an angular direction over time. In a system according to one embodiment of the invention, a base station including such an apparatus receives channel quality indications from mobile units and schedules data transmissions to the mobile units accordingly.

    摘要翻译： 根据本发明的一个实施例的装置包括发射器。 发射机接收RF信号并且基于RF信号产生至少两个调制信号。 每个调制信号被耦合到相应的天线。 天线的组合辐射图随着时间在角度方向上变化。 在根据本发明的一个实施例的系统中，包括这种装置的基站从移动单元接收信道质量指示并相应地调度到移动单元的数据传输。

    Method and apparatus for peak-to-average power reduction
    3.
    发明授权
    Method and apparatus for peak-to-average power reduction 失效
    峰值与平均功率降低的方法和装置

    公开(公告)号：US06741661B2

    公开(公告)日：2004-05-25

    申请号：US09863244

    申请日：2001-05-22

    申请人： Charles E. Wheatley, III ,  Rashid A. Attar

    发明人： Charles E. Wheatley, III ,  Rashid A. Attar

    IPC分类号： H04L2549

    CPC分类号： H04B1/707 ,  H04B2201/70706 ,  H04L27/2624

    摘要： A method and system that reduces the peak-to-average power ratio of a reverse link signal is described. A baseband structure implements a peak reduction technique using peak windowing. A non-rectangular window is used to distort the signal. One embodiment of the window is an inverted-raised cosine with the peak reduction a function of the relative difference in the squared-magnitude of the envelope relative to that of the desired peak-to-average power ratio. Multiple passes through the peak-reduction function may be performed until a desired target peak-to-average power ratio is achieved.

    摘要翻译： 描述了降低反向链路信号的峰均功率比的方法和系统。 基带结构使用峰值窗口实现峰值缩减技术。 使用非矩形窗口来扭曲信号。 窗口的一个实施例是具有峰值减小的反升余弦，相对于期望的峰均功率比的平方幅度的相对差的函数。 可以执行多次通过峰值降低功能，直到达到期望的目标峰值与平均功率比。

    Method and apparatus for forward power control in a communication system
    4.
    发明授权
    Method and apparatus for forward power control in a communication system 有权
    通信系统中正向功率控制的方法和装置

    公开(公告)号：US06850499B2

    公开(公告)日：2005-02-01

    申请号：US09755654

    申请日：2001-01-05

    申请人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    发明人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    IPC分类号： H04B7/00 ,  H04B7/005 ,  H04B7/26 ,  H04Q7/20

    CPC分类号： H04W52/24 ,  H04W52/26 ,  H04W52/267 ,  H04W52/286 ,  H04W68/00 ,  H04W72/1231

    摘要： In a data communication system capable of variable rate transmission, the data rate is determined by the largest C/I measurement of the forward link signals as measured at the Access Terminal. In one embodiment, the data transmission is scheduled based on an Access Terminal initiated forward power control, which reduces forward link rate quantization loss due to excess transmit power. The Access Terminal reports to the Access Point the excess C/I estimate for the selected rate. The Access Point then reduces its transmit power by an appropriate amount when serving that Access Terminal. In another embodiment, the data transmission is scheduled based on an Access Point initiated forward power control. The Access Point varies its transmit power over time either randomly or in synchronism with neighboring Access Points in the communication system, which enables an increase in the throughput achieved by users that receive a significant amount of interference.

    摘要翻译： 在能够进行可变速率传输的数据通信系统中，数据速率由在接入终端测量的前向链路信号的最大C / I测量来确定。 在一个实施例中，基于接入终端发起的正向功率控制来调度数据传输，其减少由于超量发射功率引起的前向链路速率量化丢失。 接入终端向接入点报告所选择率的过量C / I估计。 接入点然后在为该接入终端服务时将其发射功率降低适当的量。 在另一个实施例中，基于接入点启动的正向功率控制来调度数据传输。 接入点随时随地或与通信系统中的相邻接入点同步地改变其发射功率，这使得能够增加接收到大量干扰的用户实现的吞吐量。

    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
    8.
    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：US07903633B2

    公开(公告)日：2011-03-08

    申请号：US12196489

    申请日：2008-08-22

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

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

    IPC分类号： H04J3/06

    CPC分类号： H04W56/002 ,  H04B7/2668 ,  H04B2201/70702 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0045 ,  H04W92/20

    摘要： 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).

    摘要翻译： 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 adjusting power control setpoint in a wireless communication system
    9.
    发明授权
    Method and apparatus for adjusting power control setpoint in a wireless communication system 失效
    用于在无线通信系统中调整功率控制设定点的方法和装置

    公开(公告)号：US07643842B2

    公开(公告)日：2010-01-05

    申请号：US10889808

    申请日：2004-07-12

    申请人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

    发明人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

    IPC分类号： H04B1/16 ,  H04W52/18

    CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

    摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

    摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。