BASE STATION APPARATUS, MOBILE STATION APPARATUS, MOBILE COMMUNICATION SYSTEM AND PROGRAM

摘要

A base station apparatus transmits, to a mobile station apparatus, a sync information message including both sync timing deviation information and sync information identifying information. The mobile station apparatus executes a sync correction when the sync information identifying information is different from the previously received one; while the mobile station apparatus executes no sync correction when the sync information identifying information is the same as the previously received one. Moreover, when having executed the sync correction, the mobile station apparatus resets the value of a sync timer. In this way, the base station apparatus and the mobile station apparatus efficiently and appropriately exchange sync information with each other. Thus, there can be provided a base station apparatus and a mobile station apparatus that are capable of achieving their goal, that is, the establishment of correct synchronization therebetween.