METHOD FOR SYNCHRONIZING BASE STATIONS IN A MOBILE COMMUNICATION SYSTEM

摘要

Described herein is a method of providing synchronisation between a plurality of base stations (300) in a telecommunications system which comprises providing a random access channel in each cell (320). A local base station (300) uses the random access channel in the local cell to transmit a synchronisation signal to neighbouring base stations. For each base station, the time differences between received synchronisation signals from neighbouring base stations and the local synchronisation signal are calculated. Each set of time differences is either used to autonomously synchronise the local base station or is centralised in a radio network controller and a set of corrections distributed from the RNC to the base stations.