Threshold computation apparatus and threshold computation program

A threshold computation apparatus comprising:

• an estimator configured to compute and output estimated interference power that is an estimated value of interference power for an uplink as a communication link from a terminal to a base station;
• a storage unit configured to store a predetermined communication quality value necessary for the uplink, a maximum value of transmission power of the terminal, and transmission power of the base station for a downlink as a communication link from the base station to the terminal;
• a received power computation unit that is connected to the estimator and the storage unit, configured to:
• obtain the estimated interference power from the estimator;
• the predetermined communication quality value;
• the maximum value of transmission power of the terminal;
• and the transmission power of the base station from the storage;
• subtract a logarithmic value of the maximum value of the transmission power of the terminal from a logarithmic value of the transmission power of the base station for the downlink;
• adds a logarithmic value of the communication quality value and a logarithmic value of the estimated interference power to a result of the subtraction;
• and
• determine a result of the addition to be a logarithmic value of received power at the terminal;
• and
• a threshold computation unit that is connected to the received power computation unit and configured to compute a threshold based on the logarithmic value of the received power at the terminal and a predetermined condition.