| 摘要 |
PURPOSE:To prevent a momentary break for channel switching accompanied with radio zone movement of a communicating mobile machine by eliminating the transmission delay time difference between a base station and an exchange station and the delay time difference in the exchange station. CONSTITUTION:When a mobile station 1 is moved from the radio zone of a base station 31, with which the mobile machine 1 is communicating, to that of a base station 32, a proper delay time is given to data and the radio communication pattern of the mobile machine, which are transferred from the base station, by an exchange station 4 to match a super-frame clock PHI, and they are operated in a logical operation circuit 16 and are transmitted to a terminal 2 of the other party. A proper delay time is given to data from this terminal 2 by each base station to match the super-frame phase, and it is transmitted to the radio section, and channel switching in the wired section between the base station and the exchange station is performed after the mobile machine 1 completes zone movement and switches a channel. Thus, a momentary break accompanied with radio zone movement of the mobile machine is prevented. |
