METHOD FOR DETECTING TIME SYNCHRONIZATION ERROR IN MOBILE SYSTEM

PURPOSE: A method for detecting a time synchronization error in a mobile system is provided to solve an abnormal operation through a physical work or initialization in a software way by detecting a TOD(Time Of Date) error automatically in operation and reporting it to an operator or a relevant system. CONSTITUTION: If it is judged that system time is TG(310), a BSC(Base Station Controller) receives a message for TOD information from a BTS(Base station Transceiver System)(311). The BSC judges whether the received message is an ORM(ORigination Message)/PRM(Page Response Message)(312). In case that the received message is the ORM/PRM, the BSC obtains Di, the difference between the TOD of the BSC and the TOD of the BTS using TOD information contained in the received message(313). If Di is larger than ΔT, the BSC stores the obtained Di value and sets Fi to 1(314). However, in case that system time is TC_BSC(320), the BSC judges the number of BTSs of which the TOD differences with the BSC are larger than a preset threshold(321).