| 发明名称 |
Vertical Beam Design for UE-Specific Beamforming by Matching to a CB |
| 摘要 |
A method includes transmitting reference signals to user equipment from an active antenna array system including a multiple of antennas arrayed in at least a vertical direction. The active antenna array system is configured to perform the transmitting of the reference signals using multiple vertical beams having vertical patterns designed to provide desired vertical patterns after codebook feedback from a codebook is applied on transmissions from logical ports of the antenna array. The method includes receiving codebook feedback from the user equipment in response to transmitting the reference signals. The method includes transmitting information to the user equipment at least by applying selected entries of the codebook corresponding to the codebook feedback to the logical ports of the antenna array, wherein application of the selected entries causes the active antenna array system to perform transmitting information using multiple beams having the desired vertical patterns. Apparatus and program products are disclosed. |
| 申请公布号 |
US2015003548(A1) |
申请公布日期 |
2015.01.01 |
| 申请号 |
US201313929944 |
申请日期 |
2013.06.28 |
| 申请人 |
Nokia Siemens Networks Oy |
发明人 |
Thomas Timothy;Vook Frederick;Visotsky Eugene |
| 分类号 |
H04B7/04 |
主分类号 |
H04B7/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method, comprising:
transmitting reference signals to user equipment from an active antenna array system comprising a plurality of antennas arrayed in at least a vertical direction, the active antenna array system configured to perform the transmitting of the reference signals using multiple vertical beams having vertical patterns designed to provide desired vertical patterns after codebook feedback from a codebook is applied on transmissions from logical ports of the antenna array; receiving codebook feedback from the user equipment in response to transmitting the reference signals; and transmitting information to the user equipment at least by applying selected entries of the codebook corresponding to the codebook feedback to the logical ports of the antenna array, wherein application of the selected entries causes the active antenna array system to perform transmitting information using multiple beams having the desired vertical patterns. |
| 地址 |
Espoo FI |
