| 摘要 |
PURPOSE:To eliminate collision fault due to crosstalk with other station by providing a timing making it possible for response in the communication between plural mobile stations and a fixed station. CONSTITUTION:An ID code identifying the permission if communication with a base station B only in a group as a call signal from a fixed station to plural mobile stations M1, M2 and M3 and a code designating a line frequency to start talking, that is, a talking channel frequency are sent at the control frequency, all the plural mobile stations M1-M3 having a deviated reply timing respectively receive the codes, after the ID code and the reply signal comprising the station number exclusive for its own station given in the order of extension of the mobile stations M1-M3 are sent to the fixed station B, the mutual communication is attained with each of the mobile stations M1-M3. Thus, the collision of reply among the plural mobile stations M1-M3 and the fixed station B is avoided without losing the economy.
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