Invention Grant
- Patent Title: Wireless communication method and access point apparatus
- Patent Title (中): 无线通信方式和接入点设备
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Application No.: US14235848Application Date: 2012-09-18
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Publication No.: US09184809B2Publication Date: 2015-11-10
- Inventor: Riichi Kudo , Tomoki Murakami , Koichi Ishihara , Takeo Ichikawa , Yusuke Asai , Tomoaki Kumagai , Masato Mizoguchi
- Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Applicant Address: JP Tokyo
- Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2011-203024 20110916
- International Application: PCT/JP2012/073853 WO 20120918
- International Announcement: WO2013/039248 WO 20130321
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04B7/06 ; H04L25/02

Abstract:
The number of training signals for channel estimation is reduced. A wireless communication method includes: a step of reading, by an access point apparatus, stored training weights for a station which performs channel estimation; a step of generating, by the access point apparatus, a weight training symbol by multiplying the training weights by a training symbol and transmitting the generated weight training symbol; a step of estimating, by a station apparatus, weight channel information from the received weight training symbol; a step of transmitting, by the station apparatus, the weight channel information to the access point apparatus; a step of calculating, by the access point apparatus, transmission weights using the received weight channel information and the stored training weights; a step of transmitting, by the access point apparatus, a data signal in accordance with the transmission weights; and a step of calculating and storing, by the access point apparatus, new training weights using the weight channel information and the stored training weights.
Public/Granted literature
- US20140204890A1 WIRELESS COMMUNICATION METHOD AND ACCESS POINT APPARATUS Public/Granted day:2014-07-24
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