Patent ID: 8031742

Claim:
A terminal apparatus comprising: a communication section which carries out a communication with another terminal apparatus via a network; a terminal determination section which decides on a plurality of other terminal apparatus as subjects of measurement used for determining a communication bandwidth between the network and the communication section; a measurement bit rate determination section which decides on a measurement bit rate with the subjects of measurement; a measurement section which carries out a communication with the subjects of measurement at the measurement bit rate, and measures a bit rate of the communication with the subjects of measurement; and a determination section that tallies measurement bit rates with the subjects of measurement and determines the communication bandwidth based on the tallied measurement bit rates, wherein: the terminal determination section increases a number of the subjects of measurement in response to measuring the bit rate, and the determination section determines the communication bandwidth in response to determining a difference between a bit rate tallied before increasing the number of subjects of measurement and a bit rate tallied after increasing the number of subjects of measurement, the difference being less than or equal to a predetermined value, or the measurement bit rate determination section decides the measurement bit rate in response to measuring the bit rate, and the determination section determines the communication bandwidth in response to measuring a difference between a bit rate tallied before increasing the measurement bit rate and a bit rate tallied after increasing the number of subjects of measurement, the difference being less than or equal to a predetermined value.