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    • 8. 发明申请
    • MOBILE RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
    • 移动无线电通信系统和无线电通信方法
    • US20100323694A1
    • 2010-12-23
    • US12866551
    • 2009-02-19
    • Onur Altintas
    • Onur Altintas
    • H04W72/04H04W24/00
    • H04W16/14H04B1/005H04W72/02
    • In a mobile radio communication system of the cognitive radio method, a database device has a use state table indicating a probability that each frequency band is used for each period of time and for each location. An on-vehicle terminal acquires a frequency band having the highest probability that the band is empty at the current time and the current location according to the use state table and performs a radio communication by using the frequency band. The use state table is preferably created by a statistical process using the database device which acquires the use states of frequency bands of various locations and times by using respective vehicles as probe cars. Thus, it is possible to detect the frequency of the empty state in a short time.
    • 在认知无线电方法的移动无线电通信系统中,数据库设备具有指示每个频带在每个时间段和每个位置使用的概率的使用状态表。 车载终端根据使用状态表取得当前时刻的频带为空的概率和当前位置的频带,并通过使用该频带进行无线通信。 使用状态表优选地通过使用数据库装置的统计处理来创建,数据库装置通过使用相应的车辆作为探测车来获取各种位置和时间的频带的使用状态。 因此,可以在短时间内检测空状态的频率。