Patent ID: 7016691

Claim:
A mobile telecommunications system comprising: a plurality of radio base stations; and a radio mobile station, which communicates with one of the radio base stations via a radio channel; wherein the radio mobile station comprises: a position information detector, which detects a current position on the radio mobile station; a communications quality detector, which detects qualities of downlink communications of the respective radio base stations at the current position; a distance calculator, which calculates distances from the radio mobile station to the radio base stations at the current position; a travel direction detector, which detects a travel direction of the radio mobile station at the current position; a travel velocity detector, which detects a velocity of the radio mobile station at the current position; a position predictor, which predicts a position of the radio mobile station after an arbitrary time interval is elapsed, based on the travel direction and the velocity; an information generator, which generates peripheral radio base station information, including the distances from the radio mobile station to respective radio base stations at the predicted position, and downlink communications qualities of respective radio base stations at the predicted position; handover destination determinant, which determines one radio base station among the base stations as a handover destination, based on the calculated distances to respective radio base stations and downlink communications qualities of respective radio base stations in the peripheral radio base station information; and handover controller, which performs a handover control with the radio base station determined by the handover destination determiner.