Abstract
Ensuring interoperability of railway transport is possible only due to the developed information structure. Today, Ukraine uses the information-telecommunication system (ITS) of railway transport, which is based on a data communication network. The effectiveness of its work is largely determined by the routing system. The current algorithm for choosing the shortest route, which is used in the existing routing protocol (OSPF), does not always lead to an effective result. However, there is MPLS technology, which could improve the quality of the ITS network by creating virtual channels between its nodes. The authors proposed a scheme for selecting tunnels for the flows in the MPLS network, which is based on the neural model of a multilayer perceptron of configuration 18–3–3–10 with the activation function Softmax in hidden layers and a linear activation function in the input layer. To simulate the network operation, flow data is needed: class of service (CoS), sender and recipient identifiers, average flow rate vector and tunnel data (their initial load). The final load of the tunnels is taken as the resulting output of the neural network, on the basis of which the tunnel is selected for the flow of the k-th class of service.
Highlights
The interaction of individual elements of infrastructure, analysis of the railway transport work and management to date is impossible without support of the automated information systems
We proposed a scheme for selecting tunnels for the flows in the MPLS network (Fig. 3)
Training of the neural network (NN) of configuration 18-3-16-12-8-10 was performed under the following conditions: sample size – 6 400 examples; optimizer - Adam; learning rate - 0.0001; the number of epochs - 520
Summary
The interaction of individual elements of infrastructure, analysis of the railway transport work and management to date is impossible without support of the automated information systems. Ukraine introduced the information-telecommunication system (ITS) of railway transport, which is based on a data communication network [1, 2]. The railway transport ITS network routers use the OSPF (Open Shortest Path First) protocol, because it is a common standard supported by different hardware manufacturers and it avoids closed loops in the network development process. There is a need to study the possibility of solving the routing problem (in particular, the distribution of traffic flows) in the ITS network of railway transport
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