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2. 发明申请

US20080273484A1 Wireless Communication System 审中-公开
标题翻译：无线通信系统
公开(公告)号：US20080273484A1
公开(公告)日：2008-11-06
申请号：US10597281
申请日：2005-01-20
申请人： Hirotaka Fukutsuka , Hiroshi Kondo , Shinichi Ogo
发明人： Hirotaka Fukutsuka , Hiroshi Kondo , Shinichi Ogo
IPC分类号： H04Q7/00
CPC分类号： H04W74/06 , H04W36/30
摘要： It is an object of the present invention to provide a wireless communication system, which ensures that communication can be maintained in an excellent status although a mobile wireless station may be moved in a service area. A CPU (210) of a mobile wireless station (2) in process of transmission is operated to causes a receiving circuit (202) to periodically notify the CPU (210) of the electric field intensity of a received radio wave. When the electric field intensity of the received radio wave becomes lower than a predetermined value, the CPU (210) is operated to judge the distance from a base station (1), with which the mobile wireless station (2) is currently communicating, is increased, and the CPU (210) is operated to control the receiving circuit (202) to receive radio waves on transmission frequencies of base stations (1) other than the base station (1) and detect the electric field intensities of the received radio waves. Then, the CPU (210) is operated to control the receiving circuit (202) to receive the radio wave of the base station (1) which is the strongest in the electric field intensity of the radio wave among the base stations (1). When the data of a DTMF signal of the radio wave is indicative of “transmission permitted”, the CPU (210) is operated to control the receiving circuit (202) to switch to the base station (1) for communication. When, on the other hand, the data of the DTMF signal of the radio wave is indicative of “transmission inhibited”, the CPU (210) is operated to control the receiving circuit (202) to receive radio waves of the base stations in order of decreasing electric field intensity of the radio wave, and switch to the base station (1) which transmits DTMF signal having data indicative of “transmission permitted”.
摘要翻译：本发明的目的是提供一种无线通信系统，其可以确保尽管可以在服务区域中移动移动无线站，但是可以将通信维持在良好的状态。操作在传输过程中的移动无线站（2）的CPU（210）使得接收电路（202）周期性地通知CPU（210）所接收的无线电波的电场强度。当接收的无线电波的电场强度变得低于预定值时，CPU（210）被操作以判断与移动无线站（2）当前正在通信的基站（1）的距离是并且CPU（210）被操作以控制接收电路（202）在基站（1）之外的基站（1）的发送频率上接收无线电波，并且检测所接收的无线电波的电场强度。然后，CPU（210）被操作以控制接收电路（202）接收在基站（1）中无线电波的电场强度中最强的基站（1）的无线电波。当无线电波的DTMF信号的数据表示“允许传输”时，CPU（210）被操作以控制接收电路（202）切换到基站（1）进行通信。另一方面，当无线电波的DTMF信号的数据表示“禁止传输”时，CPU（210）被操作以控制接收电路（202）按顺序接收基站的无线电波降低无线电波的电场强度，并切换到发送具有指示“允许发送”的数据的DTMF信号的基站（1）。

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