OUTLINE MESSAGE RELAYING MODEL AT THE NETWORK
OF AN AUTOMOBILE SHORT-RANGE COMMUNICATIONS DEVICES
Darya G. Vasilchenkova, VlSU, Vladimor, Russia, darya.vasilchenkova@mail.ru
Andrey S. Golubev, VlSU, Vladimor, Russia, andrey.golubev@vlsu.ru
Mikhail Yu. Zvyagin, VlSU, Vladimor, Russia, muz1953@yandex.ru
Artem N. Zolotov, VlSU, Vladimor, Russia, zolotovan@inbox.ru
Abstract
We consider the process of relaying information messages between short-range radio devices (Dedicated Short Range Communications (DSRC) technology) fixed on vehicles. The main distinguishing feature of intelligent transport systems of this type is the ability to provide subscribers with help and assistance infor-mation services on an autonomous basis, i.e. without direct access to global information networks. In this case, we consider the task of retransmission a message from a vehicle that has lost mobility due to an acci-dent or technical malfunction out of range of a mobile operator to one of the nearest base stations or a sta-tionary DSRC-device to inform the emergency service. The goal is to save information traffic without losing the efficiency of message delivery. Proposed algorithm considers the topological and dynamic characteristics of the network, determined by the features of the car traffic in the flow. The principle of its operation is to implement multi-path routing of messages based on the relative position and direction of movement of transit network nodes. Moreover, the algorithm does not use any a priori information about the configuration of the road network and coverage area. For debugging and analysis of the algorithm a computer experiment was built using the capabilities of the traffic simulator Simulation of Urban Mobility (SUMO). Three types of street-road network are considered and a variation of all parameters of the algorithm is implemented. The resulting parameters are estimated that characterize the efficiency, speed of message delivery and the density of communication traffic. The obtained results allow us to state that the algorithm is stable with respect to a change in its parameters and performs the assigned task.
Keywords:short-range communications technology, intelligent transportation systems, message relaying, road traffic, SUMO.
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Information about authors:
Darya G. Vasilchenkova, Assistant, Post-Graduate Student of the Department of Functional Analysis and its Applications, VlSU, Vladimir, Russia
Andrey S. Golubev, PhD, Associate Professor of the Department of Physics and Applied Mathematics, VlSU, Vladimir, Russia
Mikhail Yu. Zvyagin, PhD, Associate Professor of the Department of Functional Analysis and its Applications, VlSU, Vladimir, Russia
Artem N. Zolotov, PhD, Associate Professor of the Department of Physics and Applied Mathematics, VlSU, Vladimir, Russia