| 发明名称 |
Channel State Information (CSI) Feedback and Subsampling |
| 摘要 |
A method implemented in a base station used in a wireless communications system is disclosed. The method comprises receiving, from a user equipment, rank indication (RI), a first precoding matrix indicator (PMI), and a second PMI (codebook index i2), wherein values 0-15 are assigned to the second PMI IPMI2 for RI=1 and values 0-3 are assigned to the second PMI IPMI2 for each of RI=2, RI=3, and RI=4, and wherein codebook index i2 comprises IPMI2 for RI=1. Other methods, apparatuses, and systems also are disclosed. |
| 申请公布号 |
US2014362784(A1) |
申请公布日期 |
2014.12.11 |
| 申请号 |
US201414295422 |
申请日期 |
2014.06.04 |
| 申请人 |
NEC Laboratories America, Inc. |
发明人 |
Yue Guosen;Prasad Narayan;Rangarajan Sampath |
| 分类号 |
H04L5/00;H04W24/10;H04B7/04 |
主分类号 |
H04L5/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method implemented in a base station used in a wireless communications system, the method comprising:
receiving, from a user equipment, rank indication (RI), a first precoding matrix indicator (PMI), and a second PMI (codebook index i2), wherein values 0-15 are assigned to the second PMI IPMI2 for RI=1 and values 0-3 are assigned to the second PMI IPMI2 for each of RI=2, RI=3, and RI=4, and wherein codebook index i2 comprises IPMI2 for RI=1. |
| 地址 |
Princeton NJ US |
