TIME-SYNCHRONOUS COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve efficiency of a communication line and to reduce interference probability of a communication radio wave by setting time synchronization between a fixed station and a mobile station and the transmitting/receiving timings of the side of the fixed station, selecting one of the transmitting/ receiving timings of the side of the fixed station reported to the side of the mobile station and transmitting/receiving based on it to allow the mobile station to select the opposed station of communication. SOLUTION: The fixed station 101 communicates in two way with the mobile station 103 through the use of a receiving processing means 201 and a transmission processing means 202 based on a time reference maintained by a range and time reference synchronization maintaining means 200. The mobile station 103 communicates in two way with the fixed station 101 through the use of a receiving processing means 209 and a transmission processing means 208 based on a time reference maintained by a range and time reference synchronization maintaining means 207. A relay station 104 synchronize-maintains the time reference with a fixed main station 102 and provides a ranging radio wave 113 to the mobile station by a time reference synchronization maintaining means 205 and a ranging radio wave transmission processing means 204.