Title :
Adjustment algorithm for tunable parameters in IEEE 802.11 based on Quality of Service
Author_Institution :
Dept. of Comput. Eng., Islamic Azad Univ., Yazd, Iran
Abstract :
Optimization of Quality of Service (QoS) of IEEE 802.11 Medium Access Control (MAC) protocol is a significant issue for Wireless Ad-hoc Networks; and during recent years many researches have been done to increase its performance and QoS. In this paper we focus on how to improve the throughput of EDCF mechanism and get the best QoS in frames transmission. We first outline the disadvantages of EDCF. Then we state an adjustment algorithm to resolve these drawbacks. The proposed adaptive scheme is used in the RTS/CTS-based method and adjusts Contention Window (CW) sizes based on network environment and finally enhances the network throughput.
Keywords :
access protocols; ad hoc networks; optimisation; quality of service; wireless LAN; CW; EDCF mechanism; IEEE 802.11 medium access control; MAC protocol; QoS; RTS/CTS-based method; adjustment algorithm; contention window; frames transmission; network environment; network throughput; optimization; quality of service; tunable parameter; wireless ad-hoc network; Ad hoc networks; Delays; IEEE 802.11 Standards; Quality of service; Sensors; Throughput; Wireless networks; DCF; EDCF; RTSThreshold; ad-hoc wireless networks; multiple access protocol (MAC); quality of service;
Conference_Titel :
Telecommunications (IST), 2012 Sixth International Symposium on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-2072-6
DOI :
10.1109/ISTEL.2012.6483070
