PHS POSITION INFORMATION NOTICE TERMINAL AND ITS SYSTEM

摘要

PROBLEM TO BE SOLVED: To enhance precision of position detection in the same radio base station area of a PHS terminal and to dissolve an error of the position detection due to fluctuation in electric field strength in the position information notice service of the PHS terminal. SOLUTION: A PHS terminal incorporates sensors 5-9 that detect a motion and an azimuth to enhance the precision of position detection in the same radio base station area based on data obtained from the sensors and when the PHS terminal moves in the radio base station area in spite of the fact that the PHS terminals do not move by the output of the sensors, it is regarded as being an error due to fluctuation in electric field strength and the PHS terminal is regarded as being present in a precedingly measured position.