Patent ID: 7668110

Claim:
A method of determining a reverse data rate in a mobile station, the method comprising: receiving data rate control information from at least one base station; obtaining, based on the received data rate control information, a maximum transmittable data rate; obtaining a plurality of data rates for transmitting traffic data to the at least one base station, each of the plurality of data rates being obtained by considering a status factor of the mobile station, the status factor of the mobile station including at least one of a transmission power additionally available to the mobile station or a volume of queued traffic data to be transmitted; and determining the data rate of the traffic data to be transmitted from the mobile station to the at least one base station by selecting a minimum data rate among the obtained maximum transmittable data rate and the plurality of data rates, wherein, if a value resulting from dividing a volume of data occupying a traffic buffer of the mobile station by a first buffer management variable is not greater than a payload size of an initial data rate, a Rate N-CH(queue) is set as a lowest rate R among data rates having payload sizes of not less than a value resulting from dividing the volume of data occupying the traffic buffer by a second buffer management variable, the Rate N-CH(queue) being a data rate of traffic data to be newly transmitted and being determined by considering the volume of traffic data to be transmitted.