Patent ID: 8023933

Claim:
A radio control method using a mobile station, a radio base station group comprising a plurality of radio base stations to perform radio communication with the mobile station, and a radio control apparatus for controlling the radio communication of the mobile station with the radio base station group, the radio control method comprising: a mobile station communication step wherein the mobile station performs radio communication through an A-DPCH (Associated-Dedicated Physical CHannel) with at least one of the radio base stations within the radio base station group and also performs radio communication through a HS-PDSCH (High Speed-Physical Downlink Shared CHannel) with at least one of the radio base stations within the radio base station group, a mobile station notification step, wherein the mobile station sends the radio control apparatus a command to eliminate one or more radio base stations with a low radio quality from the radio base station group and to add to the radio base station group a radio base station with a radio quality higher than that of the one or more radio base station elimination targets, among radio base stations not included in the radio base station group; an acquisition step wherein the radio control apparatus receives the command sent by the mobile station; a determination step wherein when the at least one of the radio base stations in communication with the mobile station through the HS-PDSCH is included as the elimination target and the mobile station is capable of communicating through the HS-PDSCH with at least one of the other radio base stations within the radio base station group, the radio control apparatus makes a determination to eliminate the at least one of the radio base stations in communication with the mobile station through the HS-PDSCH from the radio base station group and communicate through the HS-PDSCH with the at least one of the other radio base station within the radio base station group capable of communicating with the mobile station through the HS-PDSCH, and when the at least one of the radio base stations in radio communication through the HS-PDSCH with the mobile station is included in the one or more radio base station elimination targets, the radio control apparatus makes a determination to maintain radio communication through the HS-PDSCH with the at least one radio base station, ignoring the command received from the mobile station; and a control apparatus notification step wherein the radio control apparatus notifies the mobile station of a command to maintain radio communication via said HS-PDSCH based on a result of the determination step.