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    • 6. 发明申请
    • METHOD AND APPARATUS FOR ESTIMATING THE STEP-SIZE OF AN ADAPTIVE EQUALIZER
    • 用于估计自适应均衡器的步长的方法和装置
    • US20090129458A1
    • 2009-05-21
    • US12360171
    • 2009-01-27
    • Philip J. PietraskiMihaela C. BeluriAlpaslan Demir
    • Philip J. PietraskiMihaela C. BeluriAlpaslan Demir
    • H04L27/01
    • H04L25/03019H04B2201/70701H04L2025/03687
    • A step-size estimator for controlling the step-size of an adaptive equalizer incorporated in a transceiver (e.g., a wireless transmit/receive unit (WTRU)). The step-size estimator updates at least one adaptive equalizer tap used by the adaptive equalizer based on an apparent speed of a channel established between the transceiver and another transceiver. The step-size estimator includes a speed estimator, a signal-to-noise ratio (SNR) averager and a step-size mapping unit. The speed estimator is used to estimate the apparent speed of the channel (i.e., the observed and/or measured rate of change of the channel impulse response). The SNR averager generates a common pilot channel (CPICH) SNR estimate. The step-size mapping unit uses the speed estimate and the CPICH SNR estimate to generate a step-size parameter, μ, and a filter taps leakage factor parameter, α, used by the adaptive equalizer to update the filter tap coefficient.
    • 用于控制并入收发器(例如,无线发射/接收单元(WTRU))中的自适应均衡器的步长的步长估计器。 步长估计器基于在收发器和另一收发器之间建立的信道的视在速度来更新由自适应均衡器使用的至少一个自适应均衡器抽头。 步长估计器包括速度估计器,信噪比(SNR)平均器和步长映射单元。 速度估计器用于估计信道的视在速度(即,观测和/或测量的信道脉冲响应的变化速率)。 SNR平均器生成公共导频信道(CPICH)SNR估计。 步进大小映射单元使用速度估计和CPICH SNR估计来生成步长大小参数,以及由自适应均衡器使用的滤波器抽头泄漏因子参数α,以更新滤波器抽头系数。
    • 9. 发明申请
    • Methods, Systems and Apparatus for Defining and Using PHICH Resources for Carrier Aggregation
    • 用于定义和使用PHICH资源进行载波聚合的方法,系统和装置
    • US20140204854A1
    • 2014-07-24
    • US14125903
    • 2012-06-14
    • Martino FredaMihaela C. BeluriJean-Louis Gauvreau
    • Martino FredaMihaela C. BeluriJean-Louis Gauvreau
    • H04W72/04H04L5/00
    • H04W72/042H04L1/18H04L5/0055H04L5/0092
    • Systems, methods, and instrumentalities are disclosed to provide feedback to a user equipment (UE). A UE may transmit uplink data via a supplementary cell. A network device, such as a HeNB, eNB, etc., may receive the uplink data from the UE via the supplementary cell. The network device may send feedback associated with the uplink data to the UE via a physical downlink shared channel (PDSCH) when downlink data is available for transmission to the UE. The feedback may be physical hybrid ARQ indicator channel (PHICH) ACK/NACK information. The feedback sent via the PDSCH may be multiplexed with the downlink data. The network device may send the feedback associated with the uplink data to the UE via a physical downlink control channel (PDCCH) when downlink data is not available for transmission to the UE.
    • 公开了系统,方法和工具来向用户设备(UE)提供反馈。 UE可以经由辅助小区来发送上行链路数据。 诸如HeNB,eNB等的网络设备可以经由补充小区从UE接收上行链路数据。 当下行链路数据可用于传输到UE时,网络设备可以经由物理下行链路共享信道(PDSCH)向UE发送与上行链路数据相关联的反馈。 反馈可以是物理混合ARQ指示符信道(PHICH)ACK / NACK信息。 经由PDSCH发送的反馈可以与下行链路数据复用。 当下行链路数据不可用于传输到UE时,网络设备可以经由物理下行链路控制信道(PDCCH)向UE发送与上行链路数据相关联的反馈。