Patent ID: 8355745

Claim:
A coefficient decision apparatus comprising: an acquisition unit that acquires at least a transmission power value; and a decision unit that specifies a congestion transmission power value, at which a congestion arises, among from the transmission power value acquired by the acquisition unit, selects a filter coefficient according to the congestion transmission power value, and decides the filter coefficient as a new filter coefficient used at the time of averaging the transmission power value, wherein the transmission power value is a value measured in a predetermined duration; and wherein the decision unit compares an instantaneous value graph that reproduces the congestion transmission power value in the predetermined duration with at least one mean value graph that becomes a criterion of judgment for deciding the filter coefficient of the instantaneous value graph, specifies a mean value graph to which the comparison result corresponds within a predetermined error range, and selects the filter coefficient, used when creating the specified mean value graph, as the filter coefficient according to the congestion transmission power value.