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    • 3. 发明申请
    • CHANNEL COVARIANCE FEEDBACK FOR ENHANCED FD-MIMO
    • 增强型FD-MIMO的信道协方差反馈
    • WO2017166219A1
    • 2017-10-05
    • PCT/CN2016/078179
    • 2016-03-31
    • QUALCOMM INCORPORATEDCHEN, BoWEI, ChaoWU, LiangmingWANG, Neng
    • CHEN, BoWEI, ChaoWU, LiangmingWANG, Neng
    • H04B7/04
    • Channel covariance feedback is disclosed for enhanced full-dimension multiple input, multiple output (eFD-MIMO) systems. Channel state information (CSI) reference signal (CSI-RS) feedback operations are implemented using spatial covariance feedback of a covariance estimate. After obtaining a set of orthogonal basis vectors, a user equipment (UE) measures the CSI-RS from a base station and determines the spatial covariance matrix from the signal. The UE may then compress the spatial covariance matrix into a lower-dimension covariance estimate matrix using the orthogonal basis vectors. The lower-dimension matrix along with element-wise quantization allows for feedback of spatial covariance for eFD-MIMO systems without excessive feedback overhead.
    • 针对增强型全维度多输入多输出(eFD-MIMO)系统公开了信道协方差反馈。 信道状态信息(CSI)参考信号(CSI-RS)反馈操作使用协方差估计的空间协方差反馈来实现。 在获得一组正交基向量之后,用户设备(UE)测量来自基站的CSI-RS并从该信号中确定空间协方差矩阵。 UE然后可以使用正交基向量将空间协方差矩阵压缩成较低维协方差估计矩阵。 较低维矩阵和元素级量化允许eFD-MIMO系统的空间协方差反馈,而没有过多的反馈开销。
    • 4. 发明申请
    • COORDINATION BETWEEN MACRO CELL AND SMALL CELL TO HANDLE INTERFERENCE FOR FLEXIBLE DUPLEX SYSTEM
    • 宏单元与小单元之间的协调来控制柔性双工系统的干扰
    • WO2016138664A1
    • 2016-09-09
    • PCT/CN2015/073694
    • 2015-03-05
    • QUALCOMM INCORPORATEDCHENG, PengHUANG, YinWANG, NengWEI, Chao
    • CHENG, PengHUANG, YinWANG, NengWEI, Chao
    • H04W72/04
    • H04W72/1252H04W72/044H04W72/1278
    • Systems, methods, and apparatuses for managing interference between macro cell base station and small cell base station are disclosed. In accordance with the present disclosure, a macro cell base station may generate a timing pattern (e.g., "ON-OFF" period) to schedule communication with at least one or more UEs within its coverage area. In some examples, the timing pattern may comprise a first time period (e.g., "ON" time period) for scheduling uplink transmission from the one or more UEs. Additionally or alternatively, the timing pattern may include a second time period (e.g., "OFF" time period) for suspending communication with the UE and allowing a small cell base station to reconfigure a frequency division duplexing (FDD) uplink band for time division duplexing (TDD) transmission. In some aspects of the present disclosure, the macro cell base station may signal the timing pattern to a small cell base station to coordinate interference management.
    • 公开了用于管理宏小区基站与小小区基站之间的干扰的系统,方法和装置。 根据本公开,宏小区基站可以生成定时模式(例如,“开 - 关”周期),以调度与其覆盖区域内的至少一个或多个UE的通信。 在一些示例中,定时模式可以包括用于从一个或多个UE调度上行链路传输的第一时间段(例如,“开”时间段)。 另外或替代地,定时模式可以包括用于暂停与UE的通信的第二时间段(例如,“OFF”时间段),并允许小小区基站重新配置用于时分双工的频分双工(FDD)上行链路频带 (TDD)传输。 在本公开的一些方面,宏小区基站可以向小小区基站发信号通知定时模式以协调干扰管理。