Application of test calls for quality of service evaluation in mobile radio communications systems

Summary form only given. Data collection and analysis for quality evaluation of mobile communication services may be performed by the corresponding service provider, representatives of consumer rights, defense and the experts of the certification commission as well. With this examination a number of test calls are performed making use of automatic answer-back units. As a result of these calls the following quantities may be evaluated for various kinds of connections and for the network on an average: the probability of connection inaccessibility (probability of call loss); the average setup time of the connection; and the transmission quality parameters. Test calls for defining the service quality characteristics of cellular and trunking mobile radio communications networks are carried out from a moving car. Preliminarily the route should be selected to cover as much as possible the number of the network service areas. Based on Wald theory of successive analysis the test procedure is presented. In combination with the principle of priority distribution this procedure gives a speedy answer to the question of whether to recognize the service quality satisfactory or not. Special tables are prepared for practical realization of the procedure under consideration