| 摘要 |
<p>A mobile communication system includes a first base station which defines a first cell and a second base station which defines a second cell that covers an area at least a portion of which overlaps an area that the first cell covers. In this mobile communication system, when it is determined by the first or second base station that communication conditions of a first mobile station currently radio-linked to the first or second base station have degraded, then the first base station stores identification information of a second mobile station currently radio-linked to the first base station and causes the second mobile station to hand over to the second cell, and thereafter changes a first radio frequency currently used in the first cell to a second radio frequency and sends the second base station a message that carries identification information of the second mobile station and information indicating the second radio frequency. When the message is received, the second base station causes the second mobile station to hand over to the first cell.</p> |
