naa a22 4500 510793673 CHVBK 20180411083328.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11277-012-0783-3 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0783-3 Cross-Layer Enhancement to Support TCP-Based Traffics in WLANs [Elektronische Daten] [Dorothy Rambim, Mjumo Mzyece, Karim Djouani] Widespread deployment of wireless local area networks and a gradual increase in streaming applications have brought about a demand for improved quality of service (QoS) in wireless networks. However, increasing user datagram protocol based high priority multimedia traffic and the class differentiation introduced in QoS protocols, has resulted into transmission control protocol (TCP) starvation and increased spurious timeouts. While today's Internet traffic is still dominated by TCP based applications, the negative effects of IEEE 802.11e enhanced distributed coordination function (EDCF) scheme on TCP performance in the presence of high priority traffic have not been extensively explored. In this paper, the performance of TCP in 802.11e WLAN competing with high priority traffic is examined. The prioritised adaptive enhanced scheme (PAD_EDCF) is proposed. The proposed scheme gives priority to TCP control packets in order to improve the low traffic transmission flow and acquires additional capability of adjusting the MAC parameters based on the traffic load condition. Simulation results demonstrate that the proposed scheme significantly improves TCP performances in terms of traffic efficiency, throughput and reduces delay. Springer Science+Business Media, LLC., 2012 −802.11e nationallicence EDCF nationallicence QoS nationallicence TCP nationallicence WLAN nationallicence MAC nationallicence Rambim Dorothy Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut Mzyece Mjumo Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut Djouani Karim Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1827-1840 0929-6212 70:4<1827 2013 70 11277 https://doi.org/10.1007/s11277-012-0783-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0783-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rambim Dorothy Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut NATIONALLICENCE 700 1- Mzyece Mjumo Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut NATIONALLICENCE 700 1- Djouani Karim Department of Electrical Engineering, FSATI, Tshwane University of Technology, Pretoria, South Africa aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1827-1840 0929-6212 70:4<1827 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer