caa a22 4500 605516073 CHVBK 20210128100712.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00165-014-0300-4 doi (NATIONALLICENCE)springer-10.1007/s00165-014-0300-4 Modeling and enhancement of the IEEE 802.11 RTS/CTS scheme in an error-prone channel [Elektronische Daten] [Mohand Yazid, Djamil Aïssani, Louiza Bouallouche-Medjkoune, Nassim Amrouche, Kamel Bakli] In this paper, we present a new discrete time Markov chain model to estimate the packet transmission probability τ, in order to develop mathematical models to derive the saturation throughput and the average packet delay of a 802.11 wireless LAN based on the RTS/CTS access method in the presence of noise, which distorts transmitted frames. Besides the standard backoff rule of the 802.11, Distributed Coordination Function assumes that each loss in the network is caused only by collision and acts to treat this situation by delaying the retransmission of the lost packet. We propose an enhancement of the IEEE 802.11 RTS/CTS scheme to recognize the reason of a transmission failure (collision or noise errors). Thus, the data packet is immediately retransmitted with zero-waiting time if a failure happens due to distortion by noise. This retransmission continues until the data packet is successfully transmitted or it is dropped when the number of packet transmission retries attains its limit. After that, we model the enhanced RTS/CTS scheme using a four-dimensional Markov model and we compare its performance with the actual RTS/CTS scheme. British Computer Society, 2014 IEEE 802.11 nationallicence RTS/CTS nationallicence Noisy channel nationallicence Modeling nationallicence Enhancement nationallicence Markov chains nationallicence Performance comparison nationallicence Yazid Mohand Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut Aïssani Djamil Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut Bouallouche-Medjkoune Louiza Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut Amrouche Nassim Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut Bakli Kamel Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut Formal Aspects of Computing Springer London 27/1(2015-01-01), 33-52 0934-5043 27:1<33 2015 27 165 https://doi.org/10.1007/s00165-014-0300-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00165-014-0300-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yazid Mohand Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut NATIONALLICENCE 700 1- Aïssani Djamil Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut NATIONALLICENCE 700 1- Bouallouche-Medjkoune Louiza Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut NATIONALLICENCE 700 1- Amrouche Nassim Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut NATIONALLICENCE 700 1- Bakli Kamel Research Unit LaMOS (Modeling and Optimization of Systems), University of Bejaïa, 06000, Bejaïa, Algeria aut NATIONALLICENCE 773 0- Formal Aspects of Computing Springer London 27/1(2015-01-01), 33-52 0934-5043 27:1<33 2015 27 165