Patent ID: 7889698

Claim:
A transmission rate control method for controlling, at a mobile station, a transmission rate of uplink user data, based on a first absolute transmission rate of uplink user data received via a first absolute transmission rate control channel which is transmitted using a first identifier for the mobile station or a second absolute transmission rate of uplink user data received via a second absolute transmission rate control channel which is transmitted using a second identifier for mobile stations which satisfy a predetermined condition, comprising: storing, at the mobile station, the first absolute transmission rate of the uplink user data received via the first absolute transmission rate control channel; storing, at the mobile station, the second absolute transmission rate of the uplink user data received via the second absolute transmission rate control channel; and deleting at the mobile station, the stored second absolute transmission rate of the uplink user data when changing a serving cell for the mobile station, based on a command from a radio network controller.