Title: Modelling and performance analysis of video and voice streams in the IEEE 802.11e-EDCA WLANs with TXOP bursting under fading channel
Authors: Mohand Yazid; Louiza Bouallouche-Medjkoune; Djamil Aïssani
Addresses: Research Unit LaMOS (Modelling and Optimisation of Systems), Faculty of Exact Sciences, University of Bejaia, 06000 Bejaia, Algeria ' Research Unit LaMOS (Modelling and Optimisation of Systems), Faculty of Exact Sciences, University of Bejaia, 06000 Bejaia, Algeria ' Research Unit LaMOS (Modelling and Optimisation of Systems), Faculty of Exact Sciences, University of Bejaia, 06000 Bejaia, Algeria
Abstract: Performance evaluation of the IEEE 802.11e network has been the subject of several research papers. Especially, the transmission opportunity limit (TXOPLimit) has been proven efficient for achieving differentiated quality of service (QoS) and improving the wireless bandwidth utilisation. However, most existing analytical models have been developed under unrealistic assumption that the wireless channel is error-free. Hence, the efficiency and the performance level of the TXOPLimit in an error-prone channel are questionable. In this paper, we aim at proposing a new Markov chain model of the IEEE 802.11e network including the TXOPLimit and the packet error rate (PER). Then, we derive the saturation throughput of the IEEE 802.11e network in cases of aggregated and non-aggregated packets. The obtained results show that, the TXOPLimit efficiency is highly degraded under the effect of bit error rate (BER) and packet length.
Keywords: IEEE 802.11e-EDCA WLANs; video and voice streams; TXOP busting; fading channel; modelling and performance analysis.
International Journal of Critical Computer-Based Systems, 2017 Vol.7 No.1, pp.59 - 77
Published online: 09 May 2017 *Full-text access for editors Access for subscribers Purchase this article Comment on this article