Positioning system, method, and device for obtaining information about a current position

A positioning method for obtaining information about a current position of a device, comprising the steps of:

• sending data from a radio-call base station;
• receiving data sent from said radio-call base station at a positioning device;
• obtaining position data indicating a current position of the device based on data sent from said radio-call base-station;
• correcting the position data obtained by measuring the current position of the device based on signals sent from artificial satellites by using position-correction data generated at said radio-call base-station and sent from said radio-call base-station;
• and
• causing the positioning device that receives data sent from said radio-call base-station to switch reception frequencies based on said position data.

A positioning device for obtaining information about a current position of the device comprising:

• a receiving means which receives data sent from a radio-call base-station,
• a first positioning means which obtains position data indicating the current position of the device based on data sent from said radio-call base-station;
• a secondary positioning means to obtain secondary position data on measuring the current position of the device based on signals sent from artificial satellites;
• a position-data-correction means to correct said secondary position data using said position-correction data sent from said radio-call base-station;
• and
• a reception-frequency-switching means to switch reception-frequencies based on said secondary position data.