Registered METHOD OF TRANSMITTING UPLINK DM-RS MULTIPLEXED WITH DATA IN UPLINK MIMO TRANSMISSION

Inventors

Jeong Byung Jang, Bangwon Seo, Ahn Jae Young, Ko Young Jo

Application No.

13010426 (2011.01.20)

Publication No.

20110176632 (2011.07.21)

Registration No.

8718168 (2014.05.06)

Country

UNITED STATES

Project Code

10MI1100, Development of Adaptive Radio Access and Transmission Technologies for 4th Generation Mobile Communications, Kim Yeongjin

Abstract

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.

KSP Keywords

Cyclic shift, DFT-S-OFDM, Demodulation reference signal, Fourier Transform, Frequency division, Frequency division multiplexing, Frequency spectrum, High frequency(HF), High frequency spectrum, LTE-Advanced, MIMO transmission, Multi-layer transmission, Multiple input multiple output(MIMO), Orthogonal Frequency-Division Multiplexing(OFDM), RS sequence, division multiplexing, mobile velocity, multi-layer, multiple-input, multiple-output, reference signal, transmission layer, transmission method, uplink transmission

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Status	Patent	Country	KIPRIS
Registered	상향링크 ＭＩＭＯ 전송에서 데이터와 다중화된 상향링크 ＤＭ－ＲＳ 전송 방법	KOREA	KIPRIS