QoS Ensuring over Probability of Timely Delivery in Multipath Routing

Abstract

This article proposes a solution aimed at improving such an important Quality of Service indicator as the probability of timely delivery of packets based on optimization of multipath routing processes in infocommunication networks. The novelty of the proposed solution consists in using a dynamic model of the operation of the network routers interfaces, which allowed to take into account the nonstationary nature of the change in their state and to track the nonlinear dynamics of the average delay both on individual network interfaces and along the used set of routes in the network. This allowed formulating in an analytical form an expression for calculating the probability of timely delivery of packets, the maximum of which was the criterion of optimality in solving the problem of multipath routing in the infocommunication network. The results of the research have shown that the application of the proposed routing solution significantly improves the probability of timely delivery of packets in comparison with the results obtained during the implementation of the Traffic Engineering technology.