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Registered METHOD OF TRANSMITTING UPLINK DM-RS MULTIPLEXED WITH DATA IN UPLINK MIMO TRANSMISSION
- Inventors
- Jeong Byung Jang, Bangwon Seo, Ko Young Jo, Ahn Jae Young
- 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.
- Family
| Status | Patent | Country | KIPRIS |
|---|---|---|---|
| Registered | Method of transmitting uplink demodulation reference signal multiplexed with data in uplink multi-input multi-output transmission | KOREA | KIPRIS |