基本信息:
- 专利标题： 考虑从上行链路参考信号波束成形产生的有效下行链路信道的方法和装置
- 申请号：CN201580083624.7 申请日：2015-10-05
- 公开(公告)号：CN108141257A 公开(公告)日：2018-06-08
- 发明人： R·莫萨维 , G·福多尔 , M·赫斯勒
- 申请人： 瑞典爱立信有限公司
- 申请人地址： 瑞典斯德哥尔摩
- 专利权人： 瑞典爱立信有限公司
- 当前专利权人： 瑞典爱立信有限公司
- 当前专利权人地址： 瑞典斯德哥尔摩
- 代理机构： 北京市中咨律师事务所
- 代理人： 李峥
- 国际申请： PCT/SE2015/051047 2015.10.05
- 国际公布： WO2017/061909 EN 2017.04.13
- 进入国家日期： 2018-04-04
- 主分类号： H04B7/0413
- IPC分类号： H04B7/0413 ; H04B7/06 ; H04L5/00
According to the teachings herein, a wireless device enhances uplink channel estimation at a node in a supporting wireless communication network by beamforming its uplink reference signal transmission towards the node, and correspondingly compensates for the effect of that beamforming when receiving a downlink transmission that was adapted in dependence on the uplink channel transmission. Such processing provides significant advantages in Multiple-Input-Multiple-Output, MIMO, systems that use a potentially large number of antennas for downlink MIMO transmissions and assume reciprocity between the uplink and downlink channels. In particular, uplink beamforming increases the received signal quality of the uplink reference signal used for estimating the uplink channel, while “automatic” compensation by the wireless device of the corresponding downlink transmission obviates the need for the network to know which precoder was used for uplink beamforming, or even that uplink beamforming is in use.
公开/授权文献:
- CN108141257B 考虑从上行链路参考信号波束成形产生的有效下行链路信道的方法和装置 公开/授权日：2021-06-29
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04B | 传输 |
| ------H04B7/00 | 无线电传输系统，即使用辐射场的 |
| --------H04B7/02 | .分集系统 |
| ----------H04B7/022 | ..位置分集；宏分集 |
| ------------H04B7/0413 | ...MIMO系统 |