Delay Modelling for a Single-hop Wireless Mesh Network under Light Aggregate Traffic

TL;DR

This paper develops a delay model for a single-hop IEEE 802.11 wireless mesh network under light traffic, deriving analytical expressions and validating them through simulations.

Contribution

It introduces a novel analytical delay model for light traffic conditions in wireless mesh networks, including extensions for non-homogeneous traffic.

Findings

Analytical delay expressions closely match simulation results.

Model effectively captures delay behavior under light, homogeneous, and non-homogeneous traffic.

Decoupling queues into M/M/1 models simplifies analysis without significant accuracy loss.

Abstract

In this paper, we consider the problem of modelling the average delay in an IEEE 802.11 DCF wireless mesh network with a single root node under light traffic. We derive expression for mean delay for a co-located wireless mesh network, when packet generation is homogeneous Poisson process with rate \lambda. We also show how our analysis can be extended for non-homogeneous Poisson packet generation. We model mean delay by decoupling queues into independent M/M/1 queues. Extensive simulations are conducted to verify the analytical results.