METHOD FOR MODIFYING THE SYSTEM TIME OF THE NETWORK SIDE

摘要

A method for modifying the system time of the network side includes: the MSC creates a GPS clock request message containing a time flag, and transmits the message in the form of A interface self-defining message to the BTS; the BTS receives the GPS clock request message, and returns a GPS clock respond message in the form of A interface self-defining message to the MSC; when the MSC receives the GPS clock respond message, the MSC obtains the single route delay based on the local system time and the time flag, and uses the GPS clock in the GPS clock respond message plus the single route delay as the new system time of the network side. The present invention provides a method for obtaining highly accurate GPS clock while the telecommunication device manufacturer does not have to add extra hardware.