Patent ID: 8830928

Claim:
A mobile communication method, comprising the steps of: (A) notifying, from a first radio base station to a second radio base station, scheduling information including information specifying a radio resource for a control channel through which a first mobile station that is in communication in a first cell under the control of the first radio base station transmits downlink control information or uplink control information, when the first radio base station assigns the radio resource; and (B) assigning, at the second radio base station, a radio resource for a control channel through which a second mobile station that is in communication in a second cell under the control of the second radio base station transmits downlink control information or uplink control information based on the scheduling information, the second cell being a closed subscriber group cell, wherein in the step (B), the second radio base station assigns the radio resource so that a region in which the first mobile station searches for receiving the downlink control information and a region in which the second mobile station searches for receiving the downlink control information do not overlap.