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TRAFFIC IN RADIO NETWORKS: ISSUES OF ACCOUNTING AND PLANNING
Vasily A. Golovskoy, North Caucasus branch of Moscow Technical University of Communications and Informatics, Rostov-on-Don, Russia, golovskoy_va@mail.ru
Abstract
Special purpose communication networks designed for the needs of public administration, national defense, state security and law enforcement are a special element of the unified telecommunication network of the Russian Federation. For special-purpose networks, the following characteristics are traditionally considered critical: speed, reliability and security. However, analysis of research results and practice show that mobile radio networks of law enforcement services related to special-purpose communication networks do not always fully possess the required characteristics. Quite often, the reasons for this are the lack or insufficient level of research prior to the organization of the purchase of radio equipment for the construction of these mobile radio networks, insufficient planning of procurement and acceptance testing. The article presents the results of the author’s research on defining the level of efficiency, as one of the critical characteristics of the mobile radio network standard APCO Project 25. Digital trunking multizone mobile radio network of APCO Project 25 standard was chosen as the object of research. The subject of research is the mechanisms of handover (roaming) in this network.
The purpose of the study is to check the adequacy of the level of performance «efficiency» in the considered network of mobile radio. To determine the characteristics of «efficiency» was applied by the classical mathematical theory of teletraffic. The results of elementary calculations allow us to describe the conditions under which the radio network will not provide the required efficiency. Proposals on the feasibility of using multipath antennas in the construction of mobile radio networks of law enforcement services in large cities with hilly terrain are formulated. The proposed article is of practical importance and can be useful in the educational process as well as professionals involved in the construction of mobile radio networks.
Keywords: radio network, APCO Project 25, handover, base station, coverage area, congestion, traffic.
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Information about author:
Vasily A. Golovskoy, North Caucasus branch of Moscow Technical University of Communications and Informatics, (NCB MTUCI), Senior researcher at the Department of research and innovation development, Rostov-on-Don, Russia