| 摘要 |
<P>PROBLEM TO BE SOLVED: To predict deterioration in radio communication quality in future with sufficient time and precision, and to perform warning and action assistance so that a user may not go out of a service area in a line terminal. <P>SOLUTION: This radio quality deterioration prediction system includes: the radio terminal having a positioning means for positioning a position of the radio terminal, a transfer history notification means for notifying a monitoring server of transfer history of the radio terminal via a radio network, and a user notification means for performing the warning to the user on receiving the warning of radio quality deterioration at a radio terminal position from the monitoring server; and the monitoring server having a future position prediction means for predicting a future radio terminal position from the transfer history of the radio terminal, a radiowave propagation estimation means for estimating radio quality of an area for service using a radiowave propagation simulator, and a quality deterioration prediction means for predicting deterioration in the radio quality at the future radio terminal position to transmit the warning of the radio quality deterioration to the radio terminal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
