Apparatus and method for determining a data rate of packet data in a mobile communication system

A method for determining a data rate for a packet data service in a mobile station for a mobile communication system including a plurality of base stations, the mobile station being provided with a voice service and a packet data service from the base stations, comprising the steps of:

• receiving orthogonal code allocation information indicating the number of orthogonal codes allocated for the packet data service from the respective base stations;
• measuring CIRs using pilot channels received from the respective base stations;
• determining data rates corresponding to the measured CIRs of the respective base stations;
• selecting a base station having the highest data rate among the data rates of the respective base stations;
• controlling the determined data rate of the selected base station based on the number of the allocated orthogonal codes and determining a controlled data rate;
• and
• transmitting information on the controlled data rate to the selected base station.

A method for determining a data rate for a packet data service in a mobile communication system including a base station and a mobile station being provided with a voice service and a packet data service from the base station, comprising the steps of:

• measuring a CIR using a received pilot channel by the mobile station;
• determining by the mobile station a data rate corresponding to a data rate corresponding to the measured CIR, and transmitting information on the determined data rate to the base station;
• and
• upon receiving the information on the determined data rate, controlling by the base station the determined data rate based on the number of orthogonal codes allocated for the packet data service, and determining a controlled data rate.

A mobile station for determining a data rate for a packet data service in a mobile communication system including a base station, the mobile station being provided with a voice service and a packet data service from the base station, comprising:

• a receiver for receiving orthogonal code allocation information indicating the number of orthogonal codes allocated for the packet data service;
• a measurer for measuring a CIR using a received pilot channel;
• and
• a controller for determining a data rate corresponding to the measured CIR, controlling the determined data rate based on the number of the allocated orthogonal codes, and determining a controlled data rate.