A QoS Routing Protocol based on Available Bandwidth Estimation for Wireless Ad Hoc Networks

TL;DR

This paper introduces AODVwithQoS, a routing protocol for wireless ad hoc networks that estimates available bandwidth considering interference, improving QoS support with low overhead as shown by simulation results.

Contribution

It proposes a novel bandwidth estimation method based on busy ratio and interference, integrated into AODV for enhanced QoS routing in ad hoc networks.

Findings

AODVwithQoS achieves better QoS support in simulations.

The protocol maintains low overhead during operation.

Performance improvements are confirmed through NS2 simulations.

Abstract

At the same time as the emergence of multimedia in mobile Ad hoc networks, research for the introduction of the quality of service (QoS) has received much attention. However, when designing a QoS solution, the estimation of the available resources still represents one of the main issues. This paper suggests an approach to estimate available resources on a node. This approach is based on the estimation of the busy ratio of the shared canal. We consider in our estimation the several constraints related to the Ad hoc transmission mode such as Interference phenomena. This approach is implemented on the AODV routing protocol. We call AODVwithQOS our new routing protocol. We also performed a performance evaluation by simulations using NS2 simulator. The results confirm that AODVwithQoS provides QoS support in ad hoc wireless networks with good performance and low overhead.