Reference signal transmission method for downlink multiple input multiple output system
    68.
    发明授权
    Reference signal transmission method for downlink multiple input multiple output system 有权
    下行多输入多输出系统的参考信号传输方法

    公开(公告)号:US08340122B2

    公开(公告)日:2012-12-25

    申请号:US12921073

    申请日:2009-07-22

    IPC分类号: H04J3/00

    摘要: A reference signal transmission method in a downlink MIMO system is disclosed. The downlink MIMO system supports a first UE supporting N transmission antennas among a total of M transmission antennas (where M>N) and a second UE supporting the M transmission antennas. The method includes transmitting, by a base station (BS), subframe-associated information which designates a first subframe in which data for the first UE and the second UE is transmitted and a second subframe in which data only for the second UE can be transmitted within a radio frame having a plurality of subframes, and transmitting the first subframe and the second subframe. Reference signals corresponding to antenna ports ‘0’ to ‘N−1’ of the N antennas are mapped to the first subframe, and reference signals corresponding to antenna ports ‘0’ to ‘M−1’ of the M antennas are mapped to the second subframe.

    摘要翻译: 公开了一种下行链路MIMO系统中的参考信号传输方法。 下行链路MIMO系统支持在总共M个发送天线(其中M> N)和支持M个发送天线的第二UE之间支持N个发送天线的第一UE。 该方法包括由基站(BS)发送指定其中发送第一UE和第二UE的数据的第一子帧的子帧关联信息,以及可以发送仅第二UE的数据的第二子帧 在具有多个子帧的无线帧内,并发送第一子帧和第二子帧。 与N个天线的天线端口0〜N-1对应的参考信号被映射到第一子帧,对应于M个天线的天线端口0〜M-1的参考信号被映射到第二子帧。