A study on the measurement method of the mobile station location in wide-band mobile communications

Mobile communications must be enhanced by establishing a non-GPS technology that can detect the positions of mobile stations precisely. We propose methods of measuring the direction of a mobile station. Since these technologies depend strongly on the propagation environments of radio waves, we need a propagation model that predicts actual propagation environments well. Previously (Omote, H. and Fujii, T., Proc. 2002 IEEE-APS, vol.1, p.228-31, 2002; Proc. VTC 2003-Spring, p.1659-63, 2003), we proposed a time-space path model that matches the field measurement results in an urban area in terms of both the arrival angle distribution and the delay time distribution at the same time. We now estimate the precision of the proposed methods by using this time-space path model.