| 发明名称 | Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna | ||
| 摘要 | A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. | ||
| 申请公布号 | US9048904(B2) | 申请公布日期 | 2015.06.02 |
| 申请号 | US201314094504 | 申请日期 | 2013.12.02 |
| 申请人 | LG ELECTRONICS INC. | 发明人 | Ko Hyunsoo;Kim Sunam;Lim Dongguk;Lee Moonil;Chung Jaehoon |
| 分类号 | H04B7/02;H04B7/04;H04B7/06;H04L1/00;H04L25/03 | 主分类号 | H04B7/02 |
| 代理机构 | Lee, Hong, Degerman, Kang & Waimey | 代理人 | Lee, Hong, Degerman, Kang & Waimey |
| 主权项 | 1. A method for transmitting channel status information (CSI) via uplink in a wireless communication system, the method comprising: calculating a first precoding matrix indicator (PMI) and a second PMI; and transmitting the first PMI and the second PMI at a subframe, wherein: a subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI, and in case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. | ||
| 地址 | Seoul KR | ||