Abstract: The present invention relates to a process and a device in a radio communication system for observing the quality of channels that are to used in uplink and channels that are to be used in downlink. A quality parameter, for example the interference, is measured (301) for both uplink channels and downlink channels from a measurement receiver comprised in each base station. The measured interference is an approximation to the real downlink interference. The approximation has best correspondence with the real interference situation when the base station and the mobile stations are placed at similar height, for instance in micro- and pico cells. The measurement values can be used for adaptive allocation of frequencies or channels, or for giving statistical information about the radio communication system.