发明名称 |
Method and apparatus for obtaining channel state information required for beamforming |
摘要 |
The present invention provides a method for obtaining channel state information required for beamforming, comprising: estimating current channel state information according to a received signal; predicting future channel state information which is expected to be used by a transmitter in the next beamforming based on the current channel state information and historical channel state information; reading previous channel state information used by the transmitter in the current beamforming; determining feedback information based on the future channel state information and the previous channel state information; and sending the feedback information to the transmitter. The present invention further provides a method for performing beamforming, comprising: receiving feedback information from a receiver; reading previous channel state information used in the last beamforming; reconstructing channel state information based on the feedback information and the previous channel state information; and performing beamforming according to the reconstructed channel state information. |
申请公布号 |
US8879655(B2) |
申请公布日期 |
2014.11.04 |
申请号 |
US201113216676 |
申请日期 |
2011.08.24 |
申请人 |
NEC (China) Co., Ltd. |
发明人 |
Zhang Yu;Wu Ye;Lei Ming |
分类号 |
H04B7/02;H04B7/06;H04B17/00 |
主分类号 |
H04B7/02 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. A method for obtaining channel state information required for beamforming, comprising:
estimating current channel state information according to a received signal; predicting future channel state information which is expected to be used by a transmitter in the next beamforming, based on the current channel state information and historical channel state information; reading previous channel state information used by the transmitter in the current beamforming; determining feedback information based on the future channel state information and the previous channel state information; and sending the feedback information to the transmitter. |
地址 |
Beijing CN |