초록 ▼

A mobile communication system is capable of establishing mutual synchronization of radio communication channels among a plurality of radio base stations. A synchronization timing control center is included in a wired telephone network as a terminal equipment of the wired telephone network. Each radi

A mobile communication system is capable of establishing mutual synchronization of radio communication channels among a plurality of radio base stations. A synchronization timing control center is included in a wired telephone network as a terminal equipment of the wired telephone network. Each radio base station in the mobile communication network makes a connection to the synchronization timing control center by way of a mobile switching center, for establishing frame synchronization. Each radio base station measures a value of transmission delay between the radio base station and the synchronization timing control center, and then receives a frame signal as a reference signal from the synchronization timing control center. The formal frame signal to be used by each radio base station is reproduced by compensating the received frame signal by the transmission delay value which varies for each radio base station. Once the frame signal has been established, the signal is held by the clock timing of the network synchronization circuit in each radio base station.

대표청구항 ▼

[ What is claimed is:] [1.] A digital mobile communication system for performing a communication between a radio base station and a mobile station by a time division multiple access (TDMA) system, said digital mobile communication system comprising:a synchronization timing control center installed i

[ What is claimed is:] [1.] A digital mobile communication system for performing a communication between a radio base station and a mobile station by a time division multiple access (TDMA) system, said digital mobile communication system comprising:a synchronization timing control center installed in a wired telephone network connected to a digital mobile communication network through a mobile switching center having an identification number as a terminal equipment within the wired telephone network, for sending out a frame pulse which constitutes a reference used to synchronize radio communication channels of the radio base station within said digital mobile communication network; andsaid radio base station includes:a call connection control unit for controlling an establishment of call connection with said synchronization timing control center by using said identification number allocated to said mobile switching center within said wired telephone network;a transmission delay amount measuring unit for measuring a transmission delay of a connection path established to said synchronization timing control center; anda synchronization signal producing unit for receiving a reference frame pulse sent out from said synchronization timing control center and for correcting said reference frame pulse based on the transmission delay amount measured by said transmission delay amount measuring unit to thereby produce a radio communication channel synchronization signal.