A METHOD AND ARRANGEMENT RELATING TO RADIO COMMUNICATIONS

摘要

The present invention relates to estimating the speech quality obtained with a radio channel (37) for speech communication between a mobile station (MS1) and a base station (BS1) in a digital radio telephony system (3) (PLMN), wherewith the speech quality estimation achieved coincides to the greatest possible extent with the user's subjective estimation of the speech quality. A bit error rate associated with the radio channel (37) is measured. A fading frequency associated with the radio channel (37) is also measured. According to the invention, the speech quality is estimated with the aid of the measured bit error content and also with the aid of the measured fading frequency.