| 摘要 |
PURPOSE:To prevent quality deterioration caused by large fluctuation of a radio line by detecting a human body interrupting the sight line between a radio port and a radio terminal or its possibility and compensating the deterioration of a radio circuit. CONSTITUTION:An interruption deciding circuit which has detects human body 1-7 interrupting the sight line between the radio port 1-1 and radio terminal 1-6 or its possibility informs a radio base station 1-5 of the detection result by a control signal transmitting and receiving circuit. The base station 1-5 compares the received signal strength of each radio port and its variation which are informed from radio ports 1-1, 1-2, and 1-3 through a control line, and selects and switches the radio port in the best reception state to compensate the deterioration of the radio line. Consequently, the quality deterioration due to large variation caused by the interruption of the sight line by the human body is prevented. |
