Mobile communication terminal which selects one of a plurality of base stations corresponding to respective different communication standards to communicate with, based on estimated data throughputs of the base stations, and method therefor

A mobile communication terminal capable of selectively communicating with one of a plurality of base stations corresponding to respective different communication standards, the mobile communication terminal comprising:

• a receiving unit which receives radio signals from the plurality of base stations corresponding to the respective different communication standards;
• a measuring unit which measures error rates of the received radio signals, respectively;
• a storage unit which stores a relationship between the error rate and data throughput for each of the different communication standards;
• an estimating unit which estimates respective data throughputs of the plurality of base stations corresponding to the respective different communication standards, based on the error rates measured by the measuring unit and the relationships stored in the storage unit;
• and
• a hand-over judging unit which determines which one of the plurality of base stations corresponding to the respective different communication standards that the mobile communication terminal should connect to, based on the data throughputs estimated by the estimating unit.

A method for selecting a base station for a mobile communication terminal to communicate with from a plurality of base stations corresponding to respective different communication standards, the method comprising:

• receiving radio signals from the plurality of base stations corresponding to the respective different communication standards;
• measuring signal qualities of the received radio signals, respectively;
• storing a relationship between the signal quality and data throughput for each of the different communication standards;
• estimating respective data throughputs of the plurality of base stations corresponding to the respective different communication standards, based on the measured signal qualities and the stored relationships;
• and
• determining which one of the plurality of base stations corresponding to the respective different communication standards that the mobile communication terminal should connect to, based on the estimated data throughputs.