Patent ID: 8331295

Claim:
A method of controlling a base station which performs radio communication with a mobile station, the method comprising: starting radio communication with a plurality of mobile stations using a predetermined cellular channel; receiving Channel Quality Indication (CQI) information from a specific mobile station and at least one other mobile station from among the plurality of mobile stations; determining that a radio communication anomaly occurs between the specific mobile station and the base station based on the received CQI information from the specific mobile station and the received CQI information from the at least one other mobile station, the radio communication anomaly comprising the specific mobile station having a throughput rate below a first threshold and a channel occupancy of the predetermined cellular channel above a second threshold; in response to determining that the radio communication anomaly occurs with the specific mobile station, controlling to interrupt the radio communication via the predetermined cellular channel and perform radio communication with the specific mobile station using either a shared channel or an open channel; and in response to the radio communication being performed with the specific mobile station using the shared channel, the method further comprises assigning, to the specific mobile station, a Quiet Period (QP) for sensing a second available shared channel, receiving, from the specific mobile station, information with respect to at least one available shared channel, and transmitting, to the specific mobile station, a request signal for the controlling to be switched to a specific shared channel from among the at least one available shared channels.