University of Bahrain
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IEEE 802.11 DCF Improvement: Waiting DIFS while Waiting Back-off

Show simple item record Mahi-Rekik, Latifa Souad Bourenane, Malika 2018-07-04T06:13:20Z 2018-07-04T06:13:20Z 2018-07-01
dc.identifier.issn 2210-142X
dc.description.abstract With the emergence of time-sensitive applications such as games and telephony, the introduction of the Quality of Service (QoS) in general and the improvement of transmission delays in particular have become a must in wireless networks. The distributed coordination function (DCF) being the fundamental access method and the basis of the wireless LANs IEEE 802.11 MAC protocol, a great number of works have been done to improve it. In DCF, after sensing an idle channel, stations have to wait before the transmission of each frame a length of time called DIFS (DCF Inter Frame Space) followed by another called back-off. If the medium becomes busy during the back-off process, the back-off timer is paused and resumed when the medium is sensed free for a DIFS again. This time loss becomes considerable when the number of interruptions of back-off process grows. This paper proposes a contribution to improve DCF by combining IFS and back-off time. The simulation results show that the approach benefits are proportional to the contention level of the network and to the number of hops in multi-hop network topologies. en_US
dc.description.sponsorship University of Bahrain en_US
dc.language.iso en en_US
dc.publisher University of Bahrain en_US
dc.rights Attribution-NonCommercial-ShareAlike 4.0 International *
dc.rights.uri *
dc.subject CSMA/CA
dc.subject DCF
dc.subject IFS
dc.subject DIFS
dc.subject Back-off algorithm
dc.subject contention window
dc.subject IEEE 802.11 en_US
dc.title IEEE 802.11 DCF Improvement: Waiting DIFS while Waiting Back-off en_US
dc.type Article en_US
dc.volume 07
dc.issue 04
dc.pagestart 215
dc.pageend 223
dc.source.title International Journal of Computing and Digital Systems
dc.abbreviatedsourcetitle IJCDS

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