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    • 12. 发明申请
    • HS-PDSCH BLIND DECODING
    • HS-PDSCH BLIND解码
    • US20090003301A1
    • 2009-01-01
    • US11952002
    • 2007-12-06
    • Andres ReialLennart Andersson
    • Andres ReialLennart Andersson
    • H04B7/216
    • H04L1/0038H04L1/0046H04L1/1812H04L1/1829
    • The number of blind decoding operations in a wireless communication receiver is reduced. In one embodiment, a candidate set of transport formats is formed by eliminating one or more allowed transport formats, thus reducing the number of decode operations to be performed. In another embodiment, a received data transmission is partially decoded according to each of a plurality of transport formats, and decode quality metrics associated with each transport format are inspected. Only the transport formats yielding sufficiently high quality metrics are utilized to fully decode the transmission. In other embodiments, upon failure to successfully decode a received transmission, it is assumed to be a retransmission with a missed control transmission, and one or more transport formats specifying the position of a previous transmission in a buffer are added to the candidate set of transport formats. The received retransmission and previously received transmission are then HARQ combined and decoded.
    • 减少无线通信接收机中的盲解码操作的数量。 在一个实施例中,通过消除一个或多个允许的传输格式来形成候选传输格式集合,从而减少要执行的解码操作的数量。 在另一个实施例中,根据多种传输格式中的每一种对接收到的数据传输进行部分解码,并检查与每种传输格式相关联的解码质量度量。 仅使用产生足够高的质量度量的传输格式来完全解码传输。 在其他实施例中,在成功解码所接收的传输失败之后,假定是具有错过控制传输的重传,并且将指定缓冲器中的先前传输的位置的一个或多个传输格式添加到候选传输组 格式。 接收到的重传和先前接收的传输然后进行HARQ组合和解码。
    • 15. 发明授权
    • HS-PDSCH blind decoding
    • HS-PDSCH盲解码
    • US08761144B2
    • 2014-06-24
    • US11952002
    • 2007-12-06
    • Andres ReialLennart Andersson
    • Andres ReialLennart Andersson
    • H04B7/216
    • H04L1/0038H04L1/0046H04L1/1812H04L1/1829
    • The number of blind decoding operations in a wireless communication receiver is reduced. In one embodiment, a candidate set of transport formats is formed by eliminating one or more allowed transport formats, thus reducing the number of decode operations to be performed. In another embodiment, a received data transmission is partially decoded according to each of a plurality of transport formats, and decode quality metrics associated with each transport format are inspected. Only the transport formats yielding sufficiently high quality metrics are utilized to fully decode the transmission. In other embodiments, upon failure to successfully decode a received transmission, it is assumed to be a retransmission with a missed control transmission, and one or more transport formats specifying the position of a previous transmission in a buffer are added to the candidate set of transport formats. The received retransmission and previously received transmission are then HARQ combined and decoded.
    • 减少无线通信接收机中的盲解码操作的数量。 在一个实施例中,通过消除一个或多个允许的传输格式来形成候选传输格式集合,从而减少要执行的解码操作的数量。 在另一个实施例中,根据多种传输格式中的每一种对接收到的数据传输进行部分解码,并检查与每种传输格式相关联的解码质量度量。 仅使用产生足够高的质量度量的传输格式来完全解码传输。 在其他实施例中,在成功解码所接收的传输失败之后,假定是具有错过控制传输的重传,并且将指定缓冲器中的先前传输的位置的一个或多个传输格式添加到候选传输组 格式。 接收到的重传和先前接收的传输然后进行HARQ组合和解码。
    • 16. 发明授权
    • Format based power control
    • 基于格式的电源控制
    • US08170599B2
    • 2012-05-01
    • US12420904
    • 2009-04-09
    • Lennart AnderssonTobias JunnoTorgny Palenius
    • Lennart AnderssonTobias JunnoTorgny Palenius
    • H04B7/00
    • H04W52/22H04W52/12H04W52/226H04W52/228
    • Power control methods and apparatus taught herein advantageously provide quick convergence to the signal quality target needed to achieve a given data error rate target, when changes in transport format use by a given transport channel require such convergence. Specifically, the methods and apparatus maintain a “baseline” signal quality target that stays current with changing signal propagation conditions because it is common to all transport formats used by the transport channel. The methods and apparatus then bias this baseline signal quality target with a target offset particularized for the transport format in use. This offset may be selected from memory or dynamically calculated, and, regardless, can often be applied after a single transmission time interval.
    • 当给定的传输信道使用的传输格式的变化需要这样的收敛时,这里教导的功率控制方法和装置有利地提供实现给定的数据错误率目标所需的信号质量目标的快速收敛。 具体地说,这些方法和装置维持一个“基线”的信号质量目标,由于传输信道所使用的所有传输格式是共同的,因此信号传播条件随着变化而保持最新。 然后,方法和装置将该基线信号质量目标偏移到针对正在使用的传输格式的目标偏移量。 该偏移可以从存储器中选择或动态地计算,并且,无论如何,经常可以在单个传输时间间隔之后应用。
    • 18. 发明授权
    • Method and apparatus for communication channel error rate estimation
    • 通信信道误码率估计方法和装置
    • US07916681B2
    • 2011-03-29
    • US11296560
    • 2005-12-07
    • Lennart AnderssonYi-Pin Eric WangGregory E Bottomley
    • Lennart AnderssonYi-Pin Eric WangGregory E Bottomley
    • H04B7/185
    • H04W52/56H04B17/336H04B2201/709727H04W52/12
    • A wireless communication device or system generates transmit power control feedback for a received power control channel by determining a command error rate (CER), or by identifying a target signal quality for the power control channel according to a defined signal-quality-to-CER mapping function. Generally, the power control channel does not include error-coded data to use for CER estimation. However, in one embodiment, the channel does include known reference bits that are evaluated for CER estimation, with the estimated CER used to set the signal quality target for inner loop power control. In other embodiments, a computed reception error probability is used to identify a CER estimate according to a defined probability-to-CER mapping function. By way of non-limiting example, these embodiments may be used to provide power control feedback for power control commands transmitted on a Fractional Dedicated Physical Channel in WCDMA systems.
    • 无线通信设备或系统通过确定命令错误率(CER)或者通过根据定义的信号质量到CER来识别功率控制信道的目标信号质量来为接收到的功率控制信道生成发射功率控制反馈 映射功能。 通常,功率控制信道不包括用于CER估计的错误编码数据。 然而,在一个实施例中,信道确实包括对CER估计进行评估的已知参考比特,其中估计的CER用于设置用于内环功率控制的信号质量目标。 在其他实施例中,使用计算的接收错误概率来根据所定义的概率到CER映射函数来识别CER估计。 作为非限制性示例,这些实施例可以用于为在WCDMA系统中的分数专用物理信道上发送的功率控制命令提供功率控制反馈。
    • 20. 发明授权
    • Channel estimation by adaptive interpolation
    • 通过自适应插值的信道估计
    • US07433433B2
    • 2008-10-07
    • US10920928
    • 2004-08-18
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • Leif WilhelmssonBo BernhardssonLennart Andersson
    • H04B1/10
    • H04L25/0234H04L5/0048H04L25/022H04L25/0222H04L27/2647
    • Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. Interpolation filtering is then performed on the signal using the determined filter configuration. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities.
    • 描述了不使用不必要的内插滤波器实现良好信道估计的方法和装置。 接收机中的信号的自适应插值滤波包括确定信道的至少一个相关函数参数,并且基于相关函数参数来确定滤波器配置。 然后使用确定的滤波器配置对信号执行插值滤波。 可以在时间上执行插值,其中多普勒频移可以用作相关函数参数,或频率,其中均方根或最大延迟扩展可以用作相关函数参数,或两者。 可以使用最坏情况的信噪比来确定滤波器配置,或者可选地,可以实时地确定信噪比。 滤波器配置可以实时确定或者从具有不同复杂度的多个预定配置之一中选择。