Radio channel controller for maintaining a communication while avoiding use-prohibited cells

摘要

Radio channel controller for maintaining a communication while avoiding use-prohibited cells. Regarding a mobile station (100) that enters an area of a cell (C12) under handover restriction, the connection utilizing the use-prohibited cell is prohibited and handover of the mobile station is performed to an effectively-operating cell (C22) covering an area including the current position of the mobile station within the use-prohibited cell and having another frequency. Alternatively, the handover is performed to a base station of an effectively-operating cell (C32) belonging to another mobile communication system.