Abstract
A model of traffic management, based on the tensor generalization of nonlinear differential equations of network state was proposed. This made it possible to obtain coordinated solution of the problems of routing and link resource allocation between the flows of different classes. The solution makes it possible to provide for the Quality of Service by the parameters of the average packet transmission rate and the packet delay, including the nonstationary operating mode of the network routers interfaces. The coordinate system of interpolar paths and internal node pairs was used in the tensor geometrization of the network structure. This made it possible to provide for the solution, in which the QoS requirements were satisfied not only along the basic paths, but also on the entire set of calculated routes. The problem of traffic management in the telecommunication network was set as the problem of optimization. In this case, it was necessary to calculate many sets of control variables of two types, responsible for flow routing and for determining the order of the link resource allocation in the network in the course of minimization of the quadratic criterion of optimality. The selection of the criterion of quadratic form was determined by the fact that its use contributes to obtaining solutions of the balanced use of available network resources. On the other hand, the consideration of the state dynamics of network interfaces over time made it possible to provide meeting the requirements on the packets transmission rate and the average delay not in a specific moment of time, but throughout the entire routing table update timer.
Highlights
Provision of the assigned level of Quality of Service (QoS) in contemporary telecommunication networks (TCN) is an important scientific and technological task, the solution of which requires the systems coordination in the operation of many network protocols, referred to all levels of the model of the Open Systems Interconnection (OSI)
In the course of solving this problem, it is necessary to take into consideration the fact that a change in packet queue utilization on the TCN router interfaces has a dynamic character, due to which the numerical values of the main Quality of Service parameters in a general case are the function of time [4,5,6]
Relevant is the development of dynamic tensor models, which are represented by the well-reputed approach, based on the use of differential equations of the state of the modeled system with the view to describing the processes of traffic management and providing the Quality of Service in TCN as a whole
Summary
Provision of the assigned level of Quality of Service (QoS) in contemporary telecommunication networks (TCN) is an important scientific and technological task, the solution of which requires the systems coordination in the operation of many network protocols, referred to all levels of the model of the Open Systems Interconnection (OSI). In the course of solving this problem, it is necessary to take into consideration the fact that a change in packet queue utilization on the TCN router interfaces has a dynamic character, due to which the numerical values of the main Quality of Service parameters in a general case are the function of time (observation period) [4,5,6] Owing to this fact, relevant is the development of dynamic tensor models, which are represented by the well-reputed approach, based on the use of differential equations of the state of the modeled system with the view to describing the processes of traffic management and providing the Quality of Service in TCN as a whole
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