Title :
Performance analysis of service differentiation schemes for IEEE 802.11 Wireless LANs in non-saturated conditions
Author :
Changchun Xu ; Liu, Kezhong ; Jun Zhou
Author_Institution :
Modern Educ. Technol. Center, Naval Univ. of Eng., Wuhan
Abstract :
In order to support quality of service (QoS) in 802.11 wireless LAN, current research work as well as the enhanced DCF (EDCF) defined in 802.11e standard, tends to provide differentiated services by varying the parameters of MAC protocol. In this paper, we present an analytical model for performance evaluation of these service differentiation schemes in non-saturated traffic conditions. The analytical results show that neither significant throughput nor packet delay differentiation can be achieved by these schemes when the total load is less than the optimal value, which is quite different from that in saturated conditions. The simulation results validate the analytical model.
Keywords :
access protocols; quality of service; telecommunication traffic; wireless LAN; DCF; IEEE 802.11 Wireless LAN; MAC protocol; distributed coordination function; nonsaturated traffic conditions; packet delay differentiation; quality of service; service differentiation schemes; Analytical models; Delay; Educational technology; Media Access Protocol; Performance analysis; Quality of service; Throughput; Traffic control; Wireless LAN; Wireless application protocol; IEEE 802.11; non-saturated conditions; performance analysis; service differentiation;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4684958
