System and method for processing power control commands in a wireless communication system
    2.
    发明授权
    System and method for processing power control commands in a wireless communication system 有权
    用于在无线通信系统中处理功率控制命令的系统和方法

    公开(公告)号:US08611941B2

    公开(公告)日:2013-12-17

    申请号:US12491770

    申请日:2009-06-25

    IPC分类号: H04B7/00

    CPC分类号: H04B7/022 H04W52/24 H04W52/40

    摘要: Systems and methodologies are described that facilitate efficient power control command management in a wireless communication environment. As described herein, techniques can be utilized by a Node B and/or other network access point to compensate for differences between uplink slot boundaries and a power control command combining period associated with the uplink slot. For example, the timing of Transmitter Power Control (TPC) bit transmission can be altered as described herein such that, if a given cell or cell sector is associated with a radio link set of size 2 or greater and a TPC timing offset of size 2 or less, TPC command information can be buffered and/or otherwise delayed to a slot following the slot in which corresponding channel measurements are obtained in order to prevent efficiency loss associated with combining TPC bits of inverse polarity corresponding to multiple disparate slots.

    摘要翻译: 描述了在无线通信环境中促进有效的功率控制命令管理的系统和方法。 如本文所描述的,节点B和/或其他网络接入点可以利用技术来补偿上行链路时隙边界与与上行链路时隙相关联的功率控制命令组合周期之间的差异。 例如,发射机功率控制(TPC)比特传输的定时可以如本文所述地改变,使得如果给定小区或小区扇区与大小2或更大的无线电链路集合以及大小为2的TPC定时偏移相关联 TPC命令信息可以被缓冲和/或以其它方式延迟到在其中获得相应的信道测量的时隙之后的时隙中,以便防止与组合对应于多个不同时隙的反极性的TPC比特相关联的效率损失。

    REPORTING OF CHANNEL QUALITY INDICATORS FOR A NON-LINEAR DETECTOR
    3.
    发明申请
    REPORTING OF CHANNEL QUALITY INDICATORS FOR A NON-LINEAR DETECTOR 失效
    报告非线性检测器的通道质量指标

    公开(公告)号:US20120099446A1

    公开(公告)日:2012-04-26

    申请号:US12910609

    申请日:2010-10-22

    IPC分类号: H04W24/00

    摘要: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.

    摘要翻译: 描述用于确定在用户设备(UE)处的非线性检测器的信道质量指示符(CQI)的技术。 在一种设计中,UE可以基于至少一个星座约束容量功能来确定至少一个参数(例如,至少一个阈值)。 当特定调制阶数用于另一个流时,每个阈值可以对应于一个流的最大信息比特数。 UE可以基于至少一个参数来确定用于非线性检测器的多个流的CQI。 UE还可以基于至少一个参数来选择预编码矩阵(例如,与CQI共同)。 UE可以针对多个流报告所选择的预编码矩阵和CQI。 然后,UE可以接收可以基于所选择的预编码矩阵和CQI发送的多个流的传输。

    Symbol scaling with automatic gain control for wireless communication
    4.
    发明授权
    Symbol scaling with automatic gain control for wireless communication 有权
    符号缩放与无线通信的自动增益控制

    公开(公告)号:US08149964B2

    公开(公告)日:2012-04-03

    申请号:US11768164

    申请日:2007-06-25

    IPC分类号: H04L27/08

    摘要: Techniques for scaling symbols to account for large abrupt changes in received power at a user equipment (UE) are described. The UE performs AGC on received samples to obtain input samples. The UE processes (e.g., CDMA demodulates) the input samples to obtain first symbols. The UE determines the power of the input samples and derives a symbol gain based on (e.g., inversely related to) the power of the input samples. The UE scales the first symbols with the symbol gain to obtain detected data symbols having approximately constant amplitude, even with large abrupt changes in the power of the input samples. The UE estimates signal amplitude and noise variance based on the detected data symbols, computes LLRs for code bits of the detected data symbols based on the signal amplitude and noise variance, and decodes the LLRs to obtain decoded data.

    摘要翻译: 描述用于缩放符号以解决用户设备(UE)的接收功率的大的突然变化的技术。 UE对接收到的样本执行AGC以获得输入样本。 UE处理(例如,CDMA解调)输入样本以获得第一符号。 UE基于(例如,与输入样本的功率相反)来确定输入样本的功率并导出符号增益。 UE随着符号增益缩放第一个符号以获得具有近似恒定幅度的检测数据符号,即使输入样本的功率有大的突然变化。 UE基于检测到的数据符号估计信号幅度和噪声方差,基于信号幅度和噪声方差计算检测数据符号的码位的LLR,并解码LLR以获得解码数据。

    METHOD AND APPARATUS FOR DETECTING A CHANNEL CONDITION FOR A WIRELESS COMMUNICATION DEVICE
    6.
    发明申请
    METHOD AND APPARATUS FOR DETECTING A CHANNEL CONDITION FOR A WIRELESS COMMUNICATION DEVICE 审中-公开
    用于检测无线通信设备的通道条件的方法和装置

    公开(公告)号:US20110026430A1

    公开(公告)日:2011-02-03

    申请号:US12512224

    申请日:2009-07-30

    IPC分类号: H04B17/00 H04L12/26

    CPC分类号: H04B17/3911 H04B17/23

    摘要: A method for detecting a channel condition for a wireless communication device is provided. The method includes measuring a plurality of power levels as received by the wireless communication device; determining a metric based on the plurality of power level measurements; and generating a high-speed fading indication signal based on the metric. An apparatus for performing the method is also disclosed herein.

    摘要翻译: 提供了一种用于检测无线通信设备的信道状况的方法。 该方法包括测量由无线通信设备接收的多个功率电平; 基于所述多个功率电平测量确定度量; 以及基于所述度量产生高速衰落指示信号。 本文还公开了一种用于执行该方法的装置。

    LOG-LIKELYHOOD RATIO (LLR) COMPUTATION USING PIECEWISE LINEAR APPROXIMATION OF LLR FUNCTIONS
    7.
    发明申请
    LOG-LIKELYHOOD RATIO (LLR) COMPUTATION USING PIECEWISE LINEAR APPROXIMATION OF LLR FUNCTIONS 失效
    使用线性逼近LLR函数的LOG-LIKELYHOOD比(LLR)计算

    公开(公告)号:US20070260959A1

    公开(公告)日:2007-11-08

    申请号:US11685639

    申请日:2007-03-13

    IPC分类号: H03M13/00

    摘要: Techniques for efficiently and accurately computing log-likelihood ratio (LLRs) for code bits are described. A set of code bits may be mapped to a modulation symbol in a signal constellation. Different code bits in the set may be associated with different LLR functions. A receiver obtains received symbols for a transmission sent via a communication channel. The receiver derives LLRs for code bits based on the received symbols and piecewise linear approximation of at least one LLR function. The piecewise linear approximation of each LLR function may comprise one or more linear functions for one or more ranges of input values. The receiver may select one of the linear functions for each code bit based on a corresponding received symbol component value. The receiver may then derive an LLR for each code bit based on the linear function selected for that first code bit.

    摘要翻译: 描述了用于有效和准确地计算码位的对数似然比(LLR)的技术。 一组码位可以映射到信号星座中的调制符号。 集合中的不同码位可能与不同的LLR功能相关联。 接收机获得经由通信信道发送的传输的接收符号。 接收机基于所接收的符号和至少一个LLR功能的分段线性近似,导出用于码位的LLR。 每个LLR函数的分段线性近似可以包括用于一个或多个输入值范围的一个或多个线性函数。 接收机可以基于相应的接收到的符号分量值为每个码位选择一个线性函数。 然后,接收机可以基于为该第一码位选择的线性函数导出每个码位的LLR。

    Reporting of channel quality indicators for a non-linear detector
    8.
    发明授权
    Reporting of channel quality indicators for a non-linear detector 失效
    报告非线性检测器的通道质量指标

    公开(公告)号:US08526319B2

    公开(公告)日:2013-09-03

    申请号:US12910609

    申请日:2010-10-22

    IPC分类号: H04L12/26

    摘要: Techniques for determining channel quality indicators (CQIs) for a non-linear detector at a user equipment (UE) are described. In one design, the UE may determine at least one parameter (e.g., at least one threshold) based on at least one constellation constrained capacity function. Each threshold may correspond to a maximum number of information bits for one stream when a particular modulation order is used for another stream. The UE may determine CQIs for multiple streams for the non-linear detector based on the at least one parameter. The UE may also select a precoding matrix (e.g., jointly with the CQIs) based on the at least one parameter. The UE may report the selected precoding matrix and the CQIs for the multiple streams. The UE may thereafter receive a transmission of the multiple streams, which may be transmitted based on the selected precoding matrix and the CQIs.

    摘要翻译: 描述用于确定在用户设备(UE)处的非线性检测器的信道质量指示符(CQI)的技术。 在一种设计中,UE可以基于至少一个星座约束容量功能来确定至少一个参数(例如,至少一个阈值)。 当特定调制阶数用于另一个流时,每个阈值可以对应于一个流的最大信息比特数。 UE可以基于至少一个参数来确定用于非线性检测器的多个流的CQI。 UE还可以基于至少一个参数来选择预编码矩阵(例如,与CQI共同)。 UE可以针对多个流报告所选择的预编码矩阵和CQI。 然后,UE可以接收可以基于所选择的预编码矩阵和CQI发送的多个流的传输。