naa a22 4500 510793290 CHVBK 20180411083327.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11277-012-0695-2 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0695-2 Adaptive Priority Sliding Admission Control and Scheduling Scheme for DCF and EDCA WLANs [Elektronische Daten] [Wai Pang, David Chieng, Nurul Ahmad] In this paper an Adaptive Priority Sliding Admission Control and Scheduling (APSAS) scheme is proposed to provide QoS over the existing IEEE802.11 WLANs which operate on Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) mechanisms. The roles of this scheme are generally two folds: (1) To control the number of delay-sensitive real time flows that can be admitted into the WLAN Basic Service Set network and (2) To adjust the priority of selected real time flows in order to accommodate more real time flows without violating the QoS requirement. Extensive simulation studies show that APSAS improves the total throughput, flow throughput ratio, packets end-to-end delay, and jitter of the real time applications when compared with conventional best effort and scheduling-enhanced DCF/EDCA. APSAS also offers near to unity average throughput ratio, lower mean VoIP end-to-end packet delay (<130ms) and lower mean video packet jitter (<130ms) over DCF and EDCA. Springer Science+Business Media, LLC., 2012 WLAN nationallicence Admission control nationallicence scheduling nationallicence QoS architecture nationallicence DCF nationallicence EDCA nationallicence Pang Wai Multimedia University, Cyberjaya, Malaysia aut Chieng David Wireless Communications Cluster, MIMOS Berhad, Kuala Lumpur, Malaysia aut Ahmad Nurul Multimedia University, Cyberjaya, Malaysia aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 295-321 0929-6212 70:1<295 2013 70 11277 https://doi.org/10.1007/s11277-012-0695-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0695-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pang Wai Multimedia University, Cyberjaya, Malaysia aut NATIONALLICENCE 700 1- Chieng David Wireless Communications Cluster, MIMOS Berhad, Kuala Lumpur, Malaysia aut NATIONALLICENCE 700 1- Ahmad Nurul Multimedia University, Cyberjaya, Malaysia aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/1(2013-05-01), 295-321 0929-6212 70:1<295 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer