A MOBILE PACKET COMMUNICATION WITH A CHAINED ISOLATED RADIO ZONE NETWORK SYSTEM

A mobile packet communication with a chained isolated radio zone netwo rk system is proposed that provides nonrealtime media services includi ng voice messages, images, and navigation information, etc., to termin als in cars. In this system, microradio zones are located along a road to establish the communication between a radio base station and a ter minal by using packets in a common format. A terminal receives the sig nal by the paging channel covering a wide area and transmits packets s equentially when a terminal passes radio zones. Therefore, only three radio frequencies, inbound, outbound, and paging channels, are enough and location registration of all terminals is not necessary to realize the proposed system. When transmission and reception of multiple pack ets is not completed in a single radio zone, it can be done in other r adio zones. Since every terminal has a different staying time in each radio zone, the relationship between staying time and throughput, and the relationship between staying time and message transmission ratio a re examined and evaluated by the simulation.