Patent ID: 7835748

Claim:
A method for analyzing the interference and coverage situation in a UMTS subnetwork having a plurality of base stations, each base station having an assigned scrambling code SC, comprising the steps: acquiring measurement data with a measuring instrument within specified area elements of a defined area, wherein, in each area element, the measurement data including the received signal power of at least one downlink pilot channel of multiple base stations that can be received in this area element, and the total background noise power in the analyzed frequency band, said step of acquiring being carried out only while the subnetwork is without traffic load, and wherein the measurement data includes a received pilot channel power Ec, a total background noise power lo present in a given frequency band of 5 MHz, and a ratio Ec/lo, which thus define the measured power of the pilot channel in relation to total interference signal power; detecting the scrambling code SC of each base station with the measuring instrument; allocating the acquired measurement data to a base station via a detected scrambling code SC assigned to which base station; identifying one of the base stations as a Best Server, based on the acquired measurement data; and preparing an interference matrix based on the acquired measurement data, wherein for the preparation of the interference matrix for each area element, base stations having a power lying in a 10 dB window below the power of the Best Server are registered as interferers, and base stations that are necessary for a Soft Handover, SHO, are not rated as interferers, wherein the interference matrix reflects a statement regarding the interference relationship of each base station with other base stations, said Ec being determined after correlation reception by considering an orthogonality factor of one rake finger.