MOBILE COMMUNICATION SYSTEM

PURPOSE:To propagate a radio wave along a road and to reutilize the same communication frequency at small distance intervals by utilizing a system for the zone constitution of an area where buildings are built on both sides of the road and installing the antenna of a base station along the road to height lower than the mean height of the buildings in the area. CONSTITUTION:Radio zones Z1-Z9 are arranged along the road and mutually different communication frequencies are used to make a communication. A base station is installed in each radio zone. Antennas A1-A9 of the respective base stations are lower than the mean building height of their areas and installed along the road. A radio wave transmitted by the antenna A1 of the radio zone Z1 is propagated along the road, but attenuates sufficiently nearby the end point of the radio zone Z3 which are two radio zones beyond, so the same communication frequencies are usable by every 3rd radio zone in this direction. The radio zones Z4, Z5, and Z6, on the other hand, are shielded electro magnetically from the radio zones Z1, Z2, and Z3 by the buildings along the road, the repetitive distance in this direction does not depend upon the distance from base stations, and the same communication frequency is usable by every 3rd radio zone (three roads).