Method distribution of package delivery time

Abstract

When analyzing the problems of organizing the effective functioning of distributed data transmission networks with packet switching, it becomes clear that it is necessary to improve existing models of individual network structures, develop new models for studying effects, factors and mechanisms that have not been considered previously, and create, on their basis, non-laborious methods for selecting network parameters according to various criteria of optimality. An analytical review of the results achieved in the study of various structural formations made it possible to reveal the degree of elaboration of the issues of organizing the effective operation of the network, to formulate unsolved problems and to outline the main directions of research. In this case, the peculiarity of end-to-end data transportation over a multi-link virtual connection is clearly not taken into account, and the question of the adequacy of the assigned distributions to the real information transfer process is not considered and remains open. An approach to the construction of the distribution of the transmission time of an information packet in a virtual channel with distortions is proposed, on the basis of which the analysis of the influence of the duration of the end-to-end time-out of non-receipt of a receipt on the operational characteristics of the data transport process is carried out. A model of a data transmission path with distortions in individual sections of the transfer in the form of a stochastic conveyor is proposed, and auxiliary relations necessary for the analysis of stochastic information transfer are obtained. The parameters of the line protocols largely determine the potential of inter-node connections, the requirements for the buffer memory of the switching nodes and the end-to-end delay of subscriber messages. The known methods for the formal selection of these parameters are focused mainly on the unconditional preference of the criterion for the throughput of inter-node connections and require time-consuming numerical calculations. Since the problem of redefining network parameters often arises in real networks due to changes in operating conditions, then there is a need to develop non-laborious engineering methods for their selection according to various criteria of optimality.