Analytical Approach to Maximize Throughput in Wireless Ad Hoc Networks

Abstract

The main concerns of network performance are throughput, end-to-end packet delay and packet loss. A high-performance network is characterized by high throughput, small delay, and low packet loss. A larger transmission radius increases the probability of finding a receiver with large progress, but simultaneously increases the probability of collision with other transmissions. Transmission range and the expected progress are pair of design parameters. A short-range transmission is preferred in terms of successful transmission because its avoid collision at the receiver. Long transmission range is favourable in term of: i- it moves a packet the maximum it can in one hop in successful transmission, and ii- the high probability to find a receiver candidate in the progression direction. In this paper, a theoretical model to analyse the one hop throughput with regular structure operating under the CSMA/CA access protocol in wireless ad hoc networks is proposed. We show how we can maximize mean packet progress and mean density of information transport by optimizing the transmission probability and the transmission range. Numerical results show that we can find an optimal transmission range to achieve the highest throughput. An optimal transmission range is essential to limit the energy dissipation on the mobile devices.