The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2014
Filed:
Jul. 08, 2010
Tomoki Murakami, Yokosuka, JP;
Takeo Ichikawa, Yokosuka, JP;
Riichi Kudo, Yokosuka, JP;
Yasushi Takatori, Atsugi, JP;
Masato Mizoguchi, Yokosuka, JP;
Takefumi Hiraguri, Yokosuka, JP;
Kentaro Nishimori, Yokosuka, JP;
Tomoki Murakami, Yokosuka, JP;
Takeo Ichikawa, Yokosuka, JP;
Riichi Kudo, Yokosuka, JP;
Yasushi Takatori, Atsugi, JP;
Masato Mizoguchi, Yokosuka, JP;
Takefumi Hiraguri, Yokosuka, JP;
Kentaro Nishimori, Yokosuka, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
This radio communication method is used to perform spatial multiplexing communication between cells in the overlap cell environment. In the MU-MIMO overlap cell environment, when a null is formed between a radio base station and a radio terminal station belonging to different cells, a first set of a 'call signal' and a 'response signal' is used to perform mutual detection with the radio base station and the radio terminal station belonging to different cells, and then a null is formed so as not to cause interference of radio waves between the radio base station and the radio terminal station belonging to different cells. At this time, the addresses of the radio base station and the radio terminal station are used to discriminate whether the radio base station and the radio terminal station belong to the same cell or different cells.