in a umts mobile radio network, it is essential to achieve accurate information about the receiving conditions of a mobile unit at any place and any time.
the first step (before the availability of reasonable test mobile stations tms) is to implement a mobile unit to measure and identify all node-b signals in the air.
according to umts/3gpp specification, numerous node-b share one channel. ideally, the total power of the serving cell is more than 20 db higher than all other neighbors. in reality, this is impossible for a functioning network, and optimization work requires then the knowledge of all base stations that exceed this threshold of 20 db distance.
thus, every umts network operator needs a powerful instrument for "umts interference analysis" in his network.
the r&s®umts pn-scanner can be configured to five different packages.