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    • 66. 发明申请
    • METHOD AND APPARATUS OF USING DRIVE TEST DATA FOR PROPAGATION MODEL CALIBRATION
    • 使用驱动测试数据进行传播模型校准的方法和装置
    • US20090157342A1
    • 2009-06-18
    • US12260847
    • 2008-10-29
    • Yusheng ZhangSheng ZhouChenguang WeiLi ZhangPeng GaoWujie HuYanyun ZhuWenhua MaPei ZhaoYaxi HuHongbin JinJing YuanBin ZhangHanhui WeiHai Fu
    • Yusheng ZhangSheng ZhouChenguang WeiLi ZhangPeng GaoWujie HuYanyun ZhuWenhua MaPei ZhaoYaxi HuHongbin JinJing YuanBin ZhangHanhui WeiHai Fu
    • G06F19/00
    • G06F17/5009H04W16/18
    • A method using drive test data for propagation model calibration includes: step 1, obtaining original drive test data; step 2, selecting the data from the drive test data according to predefined conditions as effective drive test data; and step 3, extracting the effective drive test data to form a data file used for propagation model calibration. An apparatus using drive test data for propagation model calibration includes: a drive test data obtaining module, configured to obtain the drive test data in the regions to be calibrated; an effective drive test data generation module, configured to generate effective drive test data from the drive test data according to predefined conditions; and a data file generation module, configured to extract the effective drive test data to form a data file used for propagation model calibration. The present invention utilizes drive test data of existing networks to largely decrease the CW test work and reduce the network building cost. It is believed that the calibrated model can relatively accurately reflect the propagation characteristics in the field. Furthermore, base stations can be optimally allocated.
    • 使用驱动测试数据进行传播模型校准的方法包括:步骤1,获得原始驱动测试数据; 步骤2,根据预定条件从驱动测试数据中选择数据作为有效的驱动测试数据; 并且步骤3,提取有效的驱动测试数据以形成用于传播模型校准的数据文件。 使用用于传播模型校准的驱动器测试数据的装置包括:驱动测试数据获取模块,被配置为获得要校准的区域中的驱动测试数据; 有效的驱动测试数据生成模块,被配置为根据预定条件从所述驱动测试数据产生有效的驱动测试数据; 以及数据文件生成模块,被配置为提取有效的驱动测试数据以形成用于传播模型校准的数据文件。 本发明利用现有网络的驱动测试数据大大降低了CW测试工作,降低了网络建设成本。 相信校准模型可以相对准确地反映现场的传播特性。 此外,可以最佳地分配基站。
    • 68. 发明申请
    • DATA AIDED DETECTION OF SPECTRUM INVERSION
    • 数据反馈的数据检测
    • US20090103633A1
    • 2009-04-23
    • US11873923
    • 2007-10-17
    • Li Zhang
    • Li Zhang
    • H04N7/24H04L27/00
    • H04N5/455H04L27/22H04L2027/0065H04L2027/0095H04N5/4401H04N21/4382H04N21/6143
    • Methods and apparatuses to detect spectrum inversion based on estimated frequency offset in carrier signal. In one embodiment, a receiver includes an I/Q swap module to output an in-phase component and a quadrature-phase component; a frequency offset estimator to determine an offset in carry frequency of the in-phase and quadrature-phase components; and a spectrum inversion detector coupled to the frequency offset estimator and the I/Q swap module. The spectrum inversion detector is configured to signal the I/Q swap module to swap the in-phase component and the quadrature-phase component when an absolute value of the offset in carry frequency is above a predetermined threshold.
    • 基于载波信号估计频率偏移检测频谱反演的方法和装置。 在一个实施例中,接收机包括输出同相分量和正交相分量的I / Q交换模块; 频率偏移估计器,用于确定同相和正交相分量的进位频率中的偏移; 以及耦合到频率偏移估计器和I / Q交换模块的频谱反转检测器。 频谱反转检测器被配置为当进位频率中的偏移的绝对值高于预定阈值时,信号I / Q交换模块交换同相分量和正交相分量。
    • 70. 发明授权
    • Run-time characterization of on-demand analytical model accuracy
    • 按需分析模型精度的运行时间表征
    • US07512519B2
    • 2009-03-31
    • US11563048
    • 2006-11-24
    • Curtis E. HrischukEdward Emil HuthDazhi WangLi Zhang
    • Curtis E. HrischukEdward Emil HuthDazhi WangLi Zhang
    • G06F3/00
    • G05B17/02
    • A method of determining accuracy of predicted system behavior can include creating a plurality of noise adjusted analytical models, wherein each noise adjusted analytical model is associated with a set of predefined analytical model parameters. A set of inferred analytical model parameters for each noise adjusted analytical model can be derived. Each set of inferred analytical model parameters can depend upon a current noise adjusted analytical model and each prior noise adjusted analytical model. For each set of inferred analytical model parameters, a measure of error between the set of inferred analytical model parameters and the set of predefined analytical model parameters associated with the noise adjusted analytical model from which the set of inferred analytical model parameters was derived can be determined.
    • 确定预测系统行为的准确性的方法可以包括创建多个噪声调整的分析模型,其中每个噪声调整分析模型与一组预定义的分析模型参数相关联。 可以推导出一组用于每个噪声调整分析模型的推断分析模型参数。 每组推断的分析模型参数可以取决于当前噪声调整的分析模型和每个先前的噪声调整分析模型。 对于每组推断的分析模型参数,可以确定推断的分析模型参数集与与推导出的分析模型参数集合导出的噪声调整分析模型相关联的预定义分析模型参数集合之间的误差量度 。