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    • 7. 发明申请
    • METHOD OF TRANSMITTING FEEDBACK INFORMATION IN A MIMO COMMUNICATION SYSTEM AND DEVICE THEREOF
    • 在MIMO通信系统中发送反馈信息的方法及其装置
    • WO2012020310A2
    • 2012-02-16
    • PCT/IB2011/002065
    • 2011-07-27
    • Alcatel LucentLIU, Hao
    • LIU, Hao
    • H04B7/04
    • H04B7/0478H04B7/0417H04B7/0641H04B7/065
    • The present invention provides a method of providing feedback information in a user equipment of a communication system based on MIMO, comprising: determining a first latest measured long-term covariance matrix according to a downlink channel matrix model; transmitting the quantization of a first latest estimated long-term covariance matrix corresponding to the first latest measured long-term covariance matrix to the base station; determining a second latest measured long-term covariance matrix according to a downlink channel matrix model; determining the variation information of a second latest estimated long-term covariance matrix with respect to an estimated long-term covariance matrix of the last-time reset point; and transmitting the quantization of the variation information to the base station. With such a solution, overhead during the feedback of long-term covariance matrix is greatly reduced in MIMO scenario.
    • 本发明提供一种在基于MIMO的通信系统的用户设备中提供反馈信息的方法,包括:根据下行链路信道矩阵模型确定第一最新测量的长期协方差矩阵; 将与所述第一最近测量的长期协方差矩阵相对应的第一最新估计长期协方差矩阵的量化向所述基站发送; 根据下行链路信道矩阵模型确定第二最新测量的长期协方差矩阵; 确定关于最后一次复位点的估计长期协方差矩阵的第二最新估计长期协方差矩阵的变化信息; 以及向所述基站发送所述变化信息的量化。 通过这样的解决方案,在MIMO方案中大大减少了长期协方差矩阵反馈期间的开销。