Title: Performance modelling of Aloha wireless networks under the influence of varying traffic load characteristics

Authors: Ridhima Mehta

Addresses: School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, 110067, India

Abstract: Provisioning of simultaneous distributed channel access by multiple competing nodes in a wireless communication system necessitates heterogeneous features to be satisfied for efficient network operation. These unique functions incorporate augmented utilisation of scarce capacity and shared channel resources, and data delivery reliability across the network by mitigating packet collision frequency. In this work, we employ pure and slotted Aloha protocols for multiple-access resolution in wireless networks amidst the impact of diverse traffic characteristics induced by disparate inter-arrival times. Through rigorous simulation experiments, various network metrics are estimated and analysed including collision multiplicity, collision rate, throughput, number of successfully received frames, and uplink channel utilisation. The effects of miscellaneous traffic load profiles on the execution of random access-based channel coordination schemes is investigated via object-oriented discrete-event simulation modelling and genetic optimisation. Furthermore, the efficient performance of our model is significantly compared with the previous works in terms of throughput and channel utilisation.

Keywords: Aloha networks; channel utilisation; collision rate; genetic algorithm; throughput; traffic load.

DOI: 10.1504/IJAACS.2023.134113

International Journal of Autonomous and Adaptive Communications Systems, 2023 Vol.16 No.5, pp.494 - 512

Received: 12 Jul 2021
Accepted: 10 Oct 2021
Published online: 11 Oct 2023 *

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