Patent ID: 7260398

Claim:
A mobile communication system including a plurality of base stations, comprising: a first base station accommodating a mobile station through a radio transmission path; a second base station communicative with the mobile station through a radio transmission path; a broadcast unit, provided in each of said first and second base station, for broadcasting the resource information to all mobile stations located within the communication area of the relevant base station periodically or when the communication resources managed by the relevant base station are changed; a first judgement unit provided in a mobile station, for judging whether a level of radio signal from said second base station exceeds a predetermined signal level threshold; and a second judgement unit provided in the mobile station, for judging according to the resource information from said first and second base station whether available communication resources of said second base station are larger than available communication resources of said first base station, wherein a hand-off from said first base station to said second base station is performed when a level of radio signal from said second base station exceeds the predetermined signal level threshold and available communication resources of said second base station are lager than available communication resources of said first base station, wherein said first judgment unit judges that the hand-off should not be performed, if level of a radio signal transmitted between said second base station and the mobile station is below a prescribed value, and wherein the usage of communication resources corresponds to a difference between the maximum transmitting power and a current transmitting power at each of said first and second base station.