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    METHODS, APPARATUSES, AND COMPUTER PROGRAM PRODUCTS FOR OUT-OF-BAND SENSING IN A COGNITIVE LTE SYSTEM
    2.
    发明申请
    METHODS, APPARATUSES, AND COMPUTER PROGRAM PRODUCTS FOR OUT-OF-BAND SENSING IN A COGNITIVE LTE SYSTEM 有权
    方法，设备和计算机程序产品用于认证LTE系统中的带外感测

    公开(公告)号：US20150156650A1

    公开(公告)日：2015-06-04

    申请号：US14387011

    申请日：2012-03-26

    申请人： Haitao Li ,  Haipeng Lei ,  Kodo Shu ,  Rui Wang ,  Honglin Hu ,  Huiyue Yi ,  Xiumei Yang

    发明人： Haitao Li ,  Haipeng Lei ,  Kodo Shu ,  Rui Wang ,  Honglin Hu ,  Huiyue Yi ,  Xiumei Yang

    IPC分类号： H04W24/08

    CPC分类号： H04W24/08 ,  H04W16/14 ,  H04W72/085

    摘要： Provided are methods, corresponding apparatuses, and computer program products for performing out-of-band sensing on an unlicensed frequency band. A method comprises sending a configuration message for configuring measurement on at least one channel in a frequency band of a primary system; receiving a measurement report made based upon the configuration message; and determining the usability of the at least one channel based upon the measurement report, wherein the configuration message includes information regarding a respective predetermined threshold of energy detection or primary-system-feature detection, and the measurement report is for reception when a measured energy detection value or a measured primary-system-feature detection value of a received signal on the at least one channel is less than the respective predetermined threshold. With the claimed inventions, the spectrum efficiency would be improved and interference between a secondary system and an LTE system could be alleviated.

    摘要翻译： 提供了用于在非许可频带上执行带外感测的方法，相应的装置和计算机程序产品。 一种方法包括发送用于在主系统的频带中的至少一个信道上配置测量的配置消息; 接收基于配置消息的测量报告; 以及基于所述测量报告确定所述至少一个信道的可用性，其中所述配置消息包括关于能量检测或主系统特征检测的相应预定阈值的信息，并且所述测量报告用于当测量的能量检测 在所述至少一个信道上的接收信号的值或测量的主系统特征检测值小于相应的预定阈值。 通过要求保护的发明，能够提高频谱效率，可以减轻二次系统与LTE系统之间的干扰。

    Robust downlink timing synchronization method in LTE system
    3.
    发明授权
    Robust downlink timing synchronization method in LTE system 有权
    LTE系统中稳健的下行定时同步方法

    公开(公告)号：US09107158B2

    公开(公告)日：2015-08-11

    申请号：US14006960

    申请日：2012-01-11

    申请人： Xiumei Yang ,  Yong Xiong ,  Guoqing Jia ,  Lei Zhu ,  Shupei Lei ,  Zhengkun Yi

    发明人： Xiumei Yang ,  Yong Xiong ,  Guoqing Jia ,  Lei Zhu ,  Shupei Lei ,  Zhengkun Yi

    IPC分类号： H04W56/00 ,  H04J11/00

    CPC分类号： H04W56/003 ,  H04J11/0073

    摘要： A robust downlink timing synchronization method for reducing the influence of initial frequency offset and ensuring the timing synchronization in a low signal-to-noise ratio interval in an LTE system, which includes: step 1: a receiving terminal continuously storing time domain signal sequences of M PSS transmission periods; step 2: performing narrowband filtering on the time domain signal sequences of the M PSS transmission periods; step 3: performing down-sampling on data obtained after the filtering; step 4: performing sliding differential mirror correlation on the down-sampling data of an mth PSS transmission period to obtain a correlation value of an ith instant; step 5: superposing correlation results to obtain a superposition result; and step 6: determining whether the superposition result has an obvious peak interval; if yes, completing capturing the primary synchronization signal, and obtaining timing information according to a position of a maximum correlation peak; otherwise, returning to step 1.

    摘要翻译： 一种用于在LTE系统中降低初始频率偏移的影响并确保低信噪比间隔的定时同步的鲁棒下行链路定时同步方法，其包括：步骤1：接收终端连续存储时域信号序列 M PSS传输周期; 步骤2：对M PSS传输周期的时域信号序列进行窄带滤波; 步骤3：对过滤后获得的数据进行下采样; 步骤4：对第m PSS发送周期的下采样数据执行滑差分镜相关，以获得第i个时刻的相关值; 步骤5：叠加相关结果以获得叠加结果; 步骤6：确定叠加结果是否具有明显的峰值间隔; 如果是，则完成捕获主同步信号，并根据最大相关峰的位置获得定时信息; 否则返回步骤1。

    ROBUST DOWNLINK TIMING SYNCHRONIZATION METHOD IN LTE SYSTEM
    4.
    发明申请
    ROBUST DOWNLINK TIMING SYNCHRONIZATION METHOD IN LTE SYSTEM 有权
    LTE系统中的稳健下行同步同步方法

    公开(公告)号：US20140036779A1

    公开(公告)日：2014-02-06

    申请号：US14006960

    申请日：2012-01-11

    申请人： Xiumei Yang ,  Yong Xiong ,  Guoqing Jia ,  Lei Zhu ,  Shupei Lei ,  Zhengkun Yi

    发明人： Xiumei Yang ,  Yong Xiong ,  Guoqing Jia ,  Lei Zhu ,  Shupei Lei ,  Zhengkun Yi

    IPC分类号： H04W56/00

    CPC分类号： H04W56/003 ,  H04J11/0073

    摘要： Disclosed is a robust downlink timing synchronization method in an LTE system, which includes: step 1: a receiving terminal continuously storing time domain signal sequences of M PSS transmission periods; step 2: performing narrowband filtering on the time domain signal sequences of the M PSS transmission periods; step 3: performing down-sampling on data obtained after the filtering; step 4: performing sliding differential mirror correlation on the down-sampling data of an mth PSS transmission period to obtain a correlation value of an ith instant; step 5: superposing correlation results to obtain a superposition result; and step 6: determining whether the superposition result has an obvious peak interval; if yes, completing capturing the primary synchronization signal, and obtaining timing information according to a position of a maximum correlation peak; otherwise, returning to step 1. The present invention effectively reduces the influence of initial frequency offset and ensures the timing synchronization in a low signal-to-noise ratio interval. The present invention has fine utility under the receiving conditions where the initial frequency offset is not compensated and the channel transmission environment is unknown, and has good robustness.

    摘要翻译： 公开了LTE系统中的鲁棒下行链路定时同步方法，其包括：步骤1：接收终端连续存储M PSS传输周期的时域信号序列; 步骤2：对M PSS传输周期的时域信号序列进行窄带滤波; 步骤3：对过滤后获得的数据进行下采样; 步骤4：对第m PSS发送周期的下采样数据执行滑差分镜相关，以获得第i个时刻的相关值; 步骤5：叠加相关结果以获得叠加结果; 步骤6：确定叠加结果是否具有明显的峰值间隔; 如果是，则完成捕获主同步信号，并根据最大相关峰的位置获得定时信息; 本发明有效地降低了初始频率偏移的影响，并确保了低信噪比间隔的定时同步。 本发明在不补偿初始频率偏移和信道传输环境未知的接收条件下具有良好的实用性，并且具有良好的鲁棒性。