Title:
協調スペクトラムセンシング方法および車載無線通信装置
Document Type and Number:
Japanese Patent JP5853995
Kind Code:
B2
Abstract:
Efficient spectrum sensing is implemented taking into account the fading caused by multipath fading and shadow fading in a mobile environment. A cooperative spectrum sensing method performed by a plurality of in-vehicle wireless communication devices, includes: a decorrelation time acquisition step for acquiring a first decorrelation time, which is a time interval in which channel fluctuations resulting from multipath fading are decorrelated, and a second decorrelation time, which is a time interval in which channel fluctuations resulting from shadow fading are decorrelated; a sensing step for repeatedly performing sensing at a time interval equal to or longer than the first decorrelation time; a notification step for wireless transmitting a plurality of most recent sensing results at a time interval equal to or longer than the second decorrelation time; and a determination step for determining a state of a channel on the basis of the plurality of sensing results transmitted from the plurality of in-vehicle wireless communication devices.
Inventors:
Cremo Harris
Artuntash Onur
Artuntash Onur
Application Number:
JP2013121963A
Publication Date:
February 09, 2016
Filing Date:
June 10, 2013
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H04W72/08; H04W4/04; H04W16/14
Domestic Patent References:
| JP2014007640A |
Foreign References:
| WO2009084463A1 | ||||
| EP2566273A1 |
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Hironobu Yazawa
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Hironobu Yazawa