公开(公告)号：US20160191128A1

公开(公告)日：2016-06-30

申请号：US14911753

申请日：2013-08-13

申请人： NEC (CHINA) CO., LTD.

发明人： Chuangxin JIANG ,  Chaofeng LI ,  Ming LEI

IPC分类号： H04B7/04 ,  H04L1/00 ,  H04L1/06

CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04L1/0026 ,  H04L1/06 ,  H04L25/0226

摘要： Embodiments of the present disclosure relate to methods and apparatuses for channel estimation and feedback in a three dimensional multiple input multiple output (3D-MIMO) system. A method may comprise: transmitting a plurality of reference signals for a plurality of columns in an antenna array; receiving indication information on configuration adjustment of a precoding information feedback, wherein the indication information is based on measurement on the plurality of reference signals; and adjusting a configuration of the precoding information feedback based on the indication information so that a multiple vertical precoding information feedback is enabled when it can obtain a performance gain. Especially, the multiple vertical precoding information feedback may represent feeding back a plurality of vertical precoding matrix indicators for the plurality of columns in the antenna array. In embodiments of the present disclosure, there is provided a new solution for channel estimation and feedback in a 3D-MIMO system, and it may achieve a more accurate beamforming and/or a higher order spatial multiplexing, thereby improving the performance of the 3D-MIMO system.

摘要翻译： 本公开的实施例涉及用于三维多输入多输出（3D-MIMO）系统中的信道估计和反馈的方法和装置。 一种方法可以包括：在天线阵列中发送多个参考信号用于多个列; 接收关于预编码信息反馈的配置调整的指示信息，其中所述指示信息基于对所述多个参考信号的测量; 以及基于所述指示信息来调整所述预编码信息反馈的配置，使得当能够获得性能增益时，多个垂直预编码信息反馈被启用。 特别地，多垂直预编码信息反馈可以表示反馈天线阵列中的多个列的多个垂直预编码矩阵指示符。 在本公开的实施例中，提供了一种用于3D-MIMO系统中的信道估计和反馈的新解决方案，并且其可以实现更准确的波束成形和/或更高阶空间复用，从而提高3D- MIMO系统。