| 摘要 |
The present invention relates to a method of determining a synchronisation difference between said BTSs, in a wireless communications network comprising a number of Base Transceiver Stations, BTSs (12-14) and at least one Mobile Station (10) comprising at least one of the steps of: collecting a set of data on said mobile station and transmitting it back to a server for further processing, said data including at least one of a Timing Advance (TA) or Time Difference Of Arrival (TDOA), or collecting information on said communications network and transmitting it back to a server for further processing, said information including a Real Time Difference (RTDs) between said BTS's during a handover. The method further comprises recording said Real Time Differences (RTDs) between the BTSs in a table, said table comprising at least entries characterising behaviours of the RTDs over time and an expiry time attached to each table entry to invalidate it after a pre-set time, applying the RTDs as corrective factors to BTSs' time bases, and updating RTD values continuously as fresh data becomes available.
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