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    • 8. 发明授权
    • Method of transmitting uplink DM-RS multiplexed with data in uplink MIMO transmission
    • 在上行MIMO传输中传输与数据多路复用的上行DM-RS的方法
    • US08718168B2
    • 2014-05-06
    • US13010426
    • 2011-01-20
    • Byung Jang JeongBangwon SeoYoung Jo Ko
    • Byung Jang JeongBangwon SeoYoung Jo Ko
    • H04B7/02
    • H04B7/0413H04L5/0023H04L5/0044H04L5/0048
    • Provided is a multi-layer transmission method of multiplexing and transmitting data and a demodulation reference signal (DM-RS) sequence in an uplink digital Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) transmission employing multiple-input multiple-output (MIMO). The method includes allocating one DM-RS sequence as a DM-RS sequence of a first transmission layer for uplink transmission; allocating a DM-RS sequence whose cyclic shift (CS) value having the same sequence as the DM-RS sequence of the first transmission layer is configured to differ from that of the DM-RS sequence as a DM-RS sequence of a second transmission layer; and multiplexing layer-specific data and the layer-specific DM-RS sequences according to each of the first and second transmission layers. Accordingly, an RS can be transmitted in more OFDM symbols of a slot or subframe without an increase in overhead. Consequently, it is possible to satisfy requirements of LTE-advanced that a high frequency spectrum and a high mobile velocity should be supported, and transmit and receive a DM-RS multiplexed with data while maintaining orthogonality.
    • 提供了一种在上行数字付里叶变换扩展正交频分复用(DFT-S-OFDM)传输中多路传输数据和解调参考信号(DM-RS)序列的多层传输方法,该传输采用多输入多重 输出(MIMO)。 该方法包括:分配一个DM-RS序列作为上行链路传输的第一传输层的DM-RS序列; 分配具有与第一传输层的DM-RS序列相同的序列的循环移位(CS)值被配置为与DM-RS序列不同的DM-RS序列作为第二传输的DM-RS序列 层; 以及根据第一和第二传输层中的每一个复用层特定数据和层特定DM-RS序列。 因此,可以在时隙或子帧的更多OFDM符号中发送RS而不增加开销。 因此,可以满足LTE的要求,即应当支持高频谱和高移动速度,并且在保持正交性的同时发送和接收与数据多路复用的DM-RS。