CDMA METHOD CELLULAR RADIO SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a code division multiplex access(CDMA) method cellular radio system in which synchronization of a transmission timing of an outgoing radio data frame is established among base stations without the use of a system such as GPS(grobal positioning system). SOLUTION: Each mobile source and mobile destination base station 20 generates a user data part of an outgoing radio data frame based on a cell sequence number and an outgoing radio data frame number given to transmission information of a cell form fed from an exchange control station and sends the data part to a mobile station 30. The mobile station 30 receives the outgoing radio data frame sent in a same timing from each base station 20 and sends a transmission timing adjustment request to request adjustment of transmission timings of outgoing radio data frames based on the comparison result of the cell sequence number. A destination base station 20 adjusts the transmission timing of the outgoing radio data frame based on the transmission timing adjustment request.