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    • 126. 发明申请
    • METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION
    • 用于发送信道状态信息的方法和设备
    • US20160309348A1
    • 2016-10-20
    • US15192540
    • 2016-06-24
    • Huawei Technologies Co., Ltd.
    • Kunpeng LiuJianghua Liu
    • H04W24/02H04L5/00H04W28/02H04B7/04H04W72/06H04W72/12H04B7/06
    • H04W24/02H04B7/04H04B7/0456H04B7/0617H04B7/0639H04L5/005H04W28/0236H04W72/06H04W72/1226H04W88/02H04W88/08
    • The present invention discloses a method and a device for transmitting channel state information, where the method includes: determining, by a first network device according to measurement of a reference signal sent by a second network device, channel state information including a precoding matrix indication PMI and selection information that is used to instruct to select a matrix element in a precoding matrix indicated by the PMI; and sending the channel state information to the second network device. Because the channel state information includes the precoding matrix indication PMI and the selection information, the second network device can determine a precoding matrix for performing precoding, and synthesize a channel precoding matrix applicable to a two-dimensional antenna. Therefore, dimensions of the synthesized precoding matrix are closer to a spatial feature of a real channel, which effectively improves precision of a precoding matrix.
    • 本发明公开了一种用于发送信道状态信息的方法和装置,其中该方法包括:根据由第二网络设备发送的参考信号的测量,由第一网络设备确定信道状态信息,该信道状态信息包括预编码矩阵指示PMI 以及用于指示在PMI指示的预编码矩阵中选择矩阵元素的选择信息; 并向第二网络设备发送信道状态信息。 由于信道状态信息包括预编码矩阵指示PMI和选择信息,所以第二网络设备可以确定用于执行预编码的预编码矩阵,并且合成可应用于二维天线的信道预编码矩阵。 因此,合成预编码矩阵的维数更接近真实信道的空间特征,有效提高了预编码矩阵的精度。