CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED
    66.
    发明申请
    CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED 有权
    LTE-ADVANCED中传输模式9的CQI定义

    公开(公告)号:US20120176965A1

    公开(公告)日:2012-07-12

    申请号:US13167941

    申请日:2011-06-24

    IPC分类号: H04W28/18

    摘要: An evolved Node B (eNB) in a 3GPP LTE-based network receives Channel State Information-Reference Signal (CSI-RS) from a User Equipment (UE) that is configured with Precoder Matrix Indictor (PMI) disabled. A channel is estimated between the eNB and the UE for link adaptation in Transmission Mode 9 (TM9) based on CSI-RS by the UE and SRS by the eNB. CQI is calculated at UE such that if a number of CSI-RS antenna ports equals one, TM9 transmission from the eNB to the UE uses a predetermined single antenna port. If the number of CSI-RS antenna ports equals two, TM9 transmission from the eNB to the UE uses transmit diversity. If the number of CSI-RS antenna ports does not equal one or two, TM9 transmission from the eNB to the UE uses spatial multiplexing based on a rank-1 precoder that is determined from a wideband channel covariance matrix R.

    摘要翻译: 基于3GPP LTE的网络中的演进节点B(eNB)从被配置为禁用预编码矩阵指示符(PMI)的用户设备(UE)接收信道状态信息参考信号(CSI-RS)。 在eNB和UE之间估计基于UE的SRS-RS的传输模式9(TM9)中的链路自适应的信道。 在UE处计算CQI,使得如果CSI-RS天线端口的数量等于1,则从eNB到UE的TM9传输使用预定的单个天线端口。 如果CSI-RS天线端口的数量等于2,则从eNB到UE的TM9传输使用发送分集。 如果CSI-RS天线端口的数量不等于1或2,则从eNB到UE的TM9传输使用基于从宽带信道协方差矩阵R确定的秩1预编码器的空间复用。