Ministry of Posts and T elecommunicatio ns of Japan, Tokyo

Experimental measurements of mobile radio propagation characteristics are made in urban and rural areas at 1.5 GHz, 2.3 GHz and 2.6 GHz. Urban measurements are carried out in the Tokyo metropolitan area and rural in the Hiraiso region. Radio propagation loss is measured at 2 cm intervals along the measuring routes, and median propagation losses in the three frequency bands are compared. In the urban experiment, the influence of obstacles on median values of radio propagation loss is almost the Same in the three frequency bands except for t he c onstant p ropagation loss factor, which varies with each frequency. The average difference in the median value of propagation loss between the 1.5 GHz band and the 2.3 GHz band is about 5 dB, and between the 1.5 GHz band and the 2.6 GHz band about 8dB.