Patent ID: 8155668

Claim:
A radio communication apparatus for performing radio communication with a terminal apparatus, the radio communication apparatus comprising: a calculation unit which calculates first and second propagation distances indicating path lengths of the first and second paths respectively, when radio signals transmitted from the terminal apparatus at least via first and second paths are received as first and second received waves respectively; a decision unit which determines whether the first and second received waves are reflected waves reflected at first and second reflection points or direct waves without via the first and second reflection points, respectively, based on the first and second propagation distances, and outputs a first or second terminal-reflection point distance indicating a distance between the terminal apparatus and the first or second reflection points which is the closest to the terminal apparatus on the first or second path, respectively, on determining the first or second received wave as the reflected wave, or outputs the first or second propagation distance on determining the first or second received wave as the direct wave; and a position measurement unit which measures the position of the terminal apparatus based on the first or second terminal-reflection point distance, or the first or second propagation distance, output from the decision unit respectively.