Patent ID: 7415277

Claim:
A mobile communication system comprising: a plurality of mobile communication cells including at least one first cell, at least one second neighboring cell located adjacently to the first cell and at least one third neighboring cell located adjacently to the second neighboring cell while being distanced from the first cell; a mobile station located in the first cell, the mobile station including a preset threshold of the third neighboring cell and a preset threshold of the second neighboring cell and receiving a second neighboring cell information and a third neighboring cell information, the threshold of the third neighboring cell being lower than the threshold of the second neighboring cell; and a base station located in the first cell and transmitting a first signal; wherein the mobile station monitors a reception level of the first signal while simultaneously reading the second neighboring cell information and the third neighboring cell information, wherein the mobile station monitors a signal from the second neighboring cell when the reception level of the first signal is equal to or falls below the threshold of the second neighboring cell, wherein the mobile station monitors a signal from the third neighboring cell when the reception level of the first signal is equal to or falls below the threshold of the third neighboring cell, and wherein said base station comprises a control signal operable to modify values of the threshold of the second neighboring cell and the threshold of the third neighboring cell preset on the mobile station.