For network tuning, we need to relay on field measurements which require extensive drive tests
Finding the best possible configuration for antenna heights, tilts, azimuths and parameter setting for all the present cells/sectors in the network and also for any new sites that might be needed to improve coverage
Power adjustment can also be used for network tuning but can become complicated and result in poor network performance
Use of Remote Electrical Tilt (RET) Antenna is preferred over mechanical tilt antenna
Neighbour definition is of prime importance in UMTS network (Soft handover gain and interference reduction). Keep neighbour list upto 20.
Automated tools are needed that could suggest the best possible neighbour relations, antenna heights and tilts by using both the field measurements and the propagation models & simulations
Skilled people, right methods and advanced tools are needed to perform 3G tuning and optimisation