FRAME TRANSMITTER-RECEIVER AND METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a frame transmitter-receiver and a frame transmitting/ receiving method capable of maintaining communications with proper transmission delays. SOLUTION: A mobile communication system is at least composed of a switching center, a network containing a plurality of base stations, and mobile stations which communicate with the base stations at the same time. Transmission delays in communications between the switching center and the base stations are varied with the kinds of services in the communication system, and the technique concerning this mobile communication system is presented. The purpose of the technique is that communications are maintained with proper transmission delays corresponding to the kinds of services and capable of recovering from an asynchronous state even if asynchronism occurs. A storage (switching center processor 32) which stores transmission delays of each kind of services is provided to attain the above purpose. Furthermore, a setting means (diversity hand over trunk 34) which sets communication timing for the base stations on the basis of transmission delays corresponding to the kind of services is provided.