发明名称 |
COOPERATIVE SPECTRUM SENSING METHOD AND IN-VEHICLE WIRELESS COMMUNICATION DEVICE |
摘要 |
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. |
申请公布号 |
WO2014199581(A1) |
申请公布日期 |
2014.12.18 |
申请号 |
WO2014JP02845 |
申请日期 |
2014.05.29 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KREMO, HARIS;ALTINTAS, ONUR |
分类号 |
H04B17/00;H04B7/02;H04L27/00;H04W16/14 |
主分类号 |
H04B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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