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    • 4. 发明申请
    • POWER SAVING MODE FOR RECEIVER CIRCUIT BLOCKS BASED ON TRANSMITTER ACTIVITY
    • 基于发送器活动的接收器电路块的节电模式
    • WO2005099109A1
    • 2005-10-20
    • PCT/US2005/011316
    • 2005-04-01
    • QUALCOMM INCORPORATEDPERSICO, Charles J.VLADIMIR, AparinWU, Yue
    • PERSICO, Charles J.VLADIMIR, AparinWU, Yue
    • H04B1/16
    • H04B1/1615H04B1/109H04B1/525H04B1/56H04W52/0254Y02D70/40
    • To reduce power consumption, receiver circuit blocks within a wireless device are biased with less current whenever possible while still achieving the desired performance. The receiver circuit blocks may include a voltage controlled oscillator (VCO) that generates an oscillator signal used for frequency downconversion of a received signal from the forward link, a low noise amplifier (LNA) that amplifies the received signal, and a mixer that frequency downconverts the received signal. The VCO may be biased with less current if phase noise performance is less stringent, e.g., when (1) the wireless device is not transmitting on the reverse link, (2) a large amplitude jammer is not detected, and/or (3) the received signal level is sufficiently high. The bias currents of other receiver circuit blocks may also be adjusted based on transmitter activity, detected jammer, and/or received signal level.
    • 为了降低功耗,无线设备中的接收机电路块在可能的情况下以较小的电流偏置,同时仍然实现期望的性能。 接收器电路块可以包括压控振荡器(VCO),其产生用于从前向链路对接收信号进行下变频的振荡器信号;放大接收信号的低噪声放大器(LNA);以及频率下变频的混频器 接收信号。 如果(1)无线设备不在反向链路上传输,则(2)没有检测到大幅度的干扰信号,和/或(3)如果相位噪声性能不太严格,则VCO可能以较小的电流偏置, 接收信号电平足够高。 其他接收器电路块的偏置电流也可以基于发射器活动,检测到的干扰信号和/或接收的信号电平进行调整。
    • 6. 发明申请
    • GPS POSITION TRACKING METHOD WITH VARIABLE UPDATING RATE FOR POWER CONSERVATION
    • GPS定位跟踪方法,具有用于省电的可变更新速率
    • WO2006099632A2
    • 2006-09-21
    • PCT/US2006/010082
    • 2006-03-17
    • QUALCOMM INCORPORATEDPERSICO, Charles J.
    • PERSICO, Charles J.
    • G01S5/14
    • G01S19/34G01S5/0263G01S5/0294G01S19/39
    • A system and method in which the position update rate is adaptively modified, based on previous position measurements. By adjusting the update rate based on velocity predictions from two or more position fixes, a lower update rate may be used without exceeding the maximum error. Lowering the update rate reduces power consumption in the UE, providing longer battery operation. The updating method may comprise periodically repeating the velocity prediction and periodically adjusting the update rate responsive thereto. The update rate may be adjusted using additional information such as an acceleration prediction, a minimum update rate, or a preferred error. In some embodiments a model for user movement may be used to provide more accurate predictions, for example, stationary, walking, jogging, city driving, and freeway driving. The updating method may comprise receiving user input regarding the maximum position error.
    • 基于先前的位置测量,自适应地修改位置更新率的系统和方法。 通过基于来自两个或多个位置定位的速度预测调整更新速率,可以使用更低的更新速率而不超过最大误差。 降低更新速率降低了UE中的功耗,从而提供更长的电池运行。 更新方法可以包括周期性地重复速度预测并且响应于此周期性地调整更新速率。 可以使用诸如加速度预测,最小更新速率或优选错误的附加信息来调整更新速率。 在一些实施例中,用户移动的模型可用于提供更准确的预测,例如静止,步行,慢跑,城市驾驶和高速公路驾驶。 更新方法可以包括接收关于最大位置误差的用户输入。