Title :
Case study: The effect of variable priority parameters on the QoS of WLANs IEEE 802.11e EDCF
Author :
Qashi, Riyadh ; Bogdan, Martin ; Hänssgen, Klaus
Author_Institution :
Fac. of Math. & Comput. Eng., Univ. of Leipzig, Leipzig, Germany
Abstract :
The IEEE 802.11e MAC protocol enhances the 802.11 CSMA/CA contention mechanism by allowing the adjustment of previously fixed MAC parameters. This paper studies the IEEE 802.11e Enhanced Distributed Coordination Function (EDCA) traffic priority mechanism performance based on its priority parameter values, namely AIFSN, CWmin, CWmax and TXOP-Limit on a different traffic wireless transmission. In particular, we investigate how the changes of the QoS-parameters affect the throughput and the delay at WLAN traffic. The simulations results show that the changes of the QoS parameter can successfully prioritize video and voice transmission over data in a real EDCA Network. High priority traffic (the traffic with low AIFSN: Voice and Video) can give better QoS than the traffic with low priority.
Keywords :
carrier sense multiple access; quality of service; telecommunication traffic; wireless LAN; AIFSN; CSMA/CA contention mechanism; CWmax; CWmin; IEEE 802.11e EDCF network; MAC protocol; QoS; TXOP-limit; WLAN traffic; enhanced distributed coordination function; traffic priority mechanism; traffic wireless transmission; variable priority parameter effect; video transmission; voice transmission; Protocols; Quality of service; Throughput; USA Councils; Wireless LAN; Wireless communication; 802.11e; AC; DCF; EDCA; WLAN;
Conference_Titel :
Communication Software and Networks (ICCSN), 2011 IEEE 3rd International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-485-5
DOI :
10.1109/ICCSN.2011.6014685
