Title :
Performance enhancement of EDCA access mechanism of IEEE 802.11e wireless LAN
Author :
Rawat, Danda B. ; Popescu, Dimitrie C. ; Song, Min
Author_Institution :
Old Dominion Univ., Norfolk
Abstract :
IEEE 802. lie has a new coordination function, which has both contention-based and contention-free medium access methods, in order to support applications with Quality of Service (QoS) requirements. The contention-based MAC protocol, Enhanced Distributed Channel Access (EDCA) supports QoS; however, it cannot guarantee strict QoS required by real-time applications without proper tuning of QoS parameters and network control mechanisms. In this paper we adjust QoS parameters trading off between call admission control and rate control to enhance the EDCA access mechanism of IEEE 802.11e wireless LAN. Performance of the proposed scheme is analyzed using an OPNET modeler 12.0.
Keywords :
access protocols; channel allocation; performance evaluation; quality of service; telecommunication congestion control; wireless LAN; wireless channels; IEEE 802.11e wireless LAN; OPNET modeler 12.0; call admission control; channel utilization; contention-based MAC protocol; contention-free medium access method; enhanced distributed channel access; network control mechanism; performance enhancement; quality of service requirements; rate control; Access protocols; Call admission control; Delay; Media Access Protocol; Performance analysis; Quality of service; Radio control; Road accidents; USA Councils; Wireless LAN; EDCA; IEEE 802.11e; QoS;
Conference_Titel :
Radio and Wireless Symposium, 2008 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1462-8
Electronic_ISBN :
978-1-4244-1463-5
DOI :
10.1109/RWS.2008.4463540
