Title :
Performance analysis of IEEE 802.11 DCF and 802.11e EDCA based on queueing networks
Author :
Karamad, E. ; Ashtiani, F.
Author_Institution :
Dept. of Electr. Eng., Adv. Commun. Res. Inst. (ACRI), Sharif Univ. of Technol., Tehran
fDate :
5/1/2009 12:00:00 AM
Abstract :
The authors propose a new analytical model based on BCMP closed queueing networks in order to evaluate the performance of IEEE 802.11 DCF MAC protocol when all nodes are in the transmission range of each other, that is, a single hop wireless ad hoc network. By the proposed model, some performance metrics such as saturation and non-saturation throughput, distributions of channel access delay and the number of packets in the MAC buffer are derived. An extension of the proposed model is used for the analysis of IEEE 802.11e EDCA and the same performance metrics are evaluated for this protocol. Analytical results on IEEE 802.11e prove that differentiation in service is possible and channel share for each service type may be well assigned by tuning the MAC protocol parameters. Simulation results show consistency with our analytical results.
Keywords :
access protocols; ad hoc networks; queueing theory; wireless LAN; wireless channels; BCMP closed queueing network; IEEE 802.11 DCF MAC protocol; IEEE 802.11e EDCA; distributed coordination function; enhanced distributed channel access delay; wireless ad hoc network;
Journal_Title :
Communications, IET
DOI :
10.1049/iet-com.2008.0676