TRAFFIC HANDLING CAPABILITY OF TRUNKED LAND MOBILE RADIO SYSTEMS.

Trunking, or Dynamic Channel Assignment, has been proposed as a means of improving the utilization of existing channels in the land mobile radio service without further reduction in the grade of service to the users. However much of the discussion to date has been based on telephony experience. This paper addresses the question: how relevant is telephony experience to mobile radio? The results show that there are significant differences between the traffic offered by telephony users and mobile radio users and a new theory has been developed to take account of them. It was found that use of the incorrect theory can lead to traffic predictions which can be wrong by as much as 100%. Perhaps even more significantly the new theory shows that some types of mobile radio users can receive almost all of the advantages of trunking in very small systems including 1 channel (concentrator) systems.