MODELING AND EVALUATION OF ROUTE STABILITY IN WIRELESS MOBILE NET-WORKS

Abstract

The development of wireless mobile networks, particularly ad hoc networks, poses new challenges related to ensuring communication stability under conditions of constant node movement. Traditional routing protocols focused on finding the shortest path often prove to be ineffective, as the shortest route can be the least stable due to dynamic changes in the network topology. In this regard, significant research attention is being paid to the development of criteria and algorithms that consider route stability as a key parameter for improving the quality of service.

The paper proposes a mathematical model for evaluating route stability based on an analysis of the link failure probability between nodes. The model accounts for the stochastic nature of node movement by describing their deviations from initial positions using a normal distribution and derives the connectivity probability through the Rice distribution for the two-dimensional case. Based on the model, the task of selecting the most stable route is reduced to the classic problem of finding the shortest path in a weighted graph, where the edge weights are determined by the logarithms of the connection probabilities. The paper also presents simulation results that demonstrate the effectiveness of the proposed approach at different levels of node mobility and confirm the theoretical conclusions.

The obtained results can be used to develop adaptive routing algorithms that increase the reliability of communication networks between mobile objects (VANET, FANET) and reduce the overhead traffic associated with route reconfiguration.