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:
Dec. 20, 2016
Filed:
Feb. 09, 2010
Kazuyuki Sakoda, Tokyo, JP;
Yuichi Morioka, Tokyo, JP;
Ryo Sawai, Tokyo, JP;
Hiroaki Takano, Saitama, JP;
Ryota Kimura, Tokyo, JP;
Takushi Kunihiro, Tokyo, JP;
Kazuyuki Sakoda, Tokyo, JP;
Yuichi Morioka, Tokyo, JP;
Ryo Sawai, Tokyo, JP;
Hiroaki Takano, Saitama, JP;
Ryota Kimura, Tokyo, JP;
Takushi Kunihiro, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Suitable beam pattern control is performed while performing access control based on physical carrier sense. A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern being formed transmits frames having a shorter preamble, thereby suppressing transmission overhead. Also, a beam pattern and preamble type are decided based on transmission/reception history of access control following CSMA/CA procedures.