Development of software unit for research of telecommunication systems with dynamic topology in the simulation environment “Network Simulator”

This paper describes the development of a software module for the simulation of communication systems with dynamic network topology. Developed module allows you to explore the effect of moving the network nodes on the quality of the transmitted information. With the help of the developed module the work of the communication system with dynamic network topology is analyzed. Simulation time is 2 to 6 hours. Transfer rate facilities ranged from 20 to 80 kmph. The data transfer rate was from 0.5 to 32 mbps. The experimental results show that the network is suitable for the provision of real-time traffic services (as online application) and data traffic by condition end2end delay of packet. By condition, the probability of packet loss this communication system suitable for the transmission of real-time traffic and for normal data traffic requires the use of a transport layer protocol that guarantees delivery of data packets, as TCP. Investigate methods for increase the coverage area of public communication systems can be used to provide Internet access to transport facilities such as river vessel, railway train or road transport, as buses or cargo vehicular.