| 发明名称 |
METHOD AND APPARATUS FOR RECIPROCITY CALIBRATION BETWEEN BASE STATIONS |
| 摘要 |
Embodiments of the present invention provide a method and an apparatus for reciprocity calibration between base stations, which relate to the communications field, and can improve precision of reciprocity calibration between base stations. The method includes: obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station. |
| 申请公布号 |
US2016308624(A1) |
申请公布日期 |
2016.10.20 |
| 申请号 |
US201615192596 |
申请日期 |
2016.06.24 |
| 申请人 |
Huawei Technologies Co., Ltd. |
发明人 |
Rong Lu;Chen Dageng |
| 分类号 |
H04B17/12;H04B7/02;H04B7/04 |
主分类号 |
H04B17/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for reciprocity calibration between base stations, applied to at least two base stations, the method comprising:
obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations, wherein the downlink user-dedicated reference signal is obtained by means of calculation by each base station by performing multiple-antenna weighting of the base station according to the precoding vector; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station. |
| 地址 |
Shenzhen CN |
