Title :
Enhancing IEEE802.11 WLAN Performance by Combining Adaptive Contention Window and Random Varying Timing Scheme
Author :
Ru-Yan, Wang ; Da-Peng, Wu ; Sheng, Huang ; Lan-ying, Liu
Author_Institution :
Special Res. Centre for Opt. Internet & Wireless Inf. Networks, Chongqing Univ. of Posts & Telecommun., Chongqing, China
Abstract :
A novel contention aware adjusting mechanism is proposed in this letter. Compared with the Binary Exponential Backoff algorithm defined in standard, our scheme can determine the contention window based on the collision status rapidly and the collision probability can be reduced dramatically; moreover, the dynamical varying timing method can make the node adjust the number of packets sending to MAC queue during the busy or idle period. The simulations show that our mechanism is able to optimize the parameters of packets sending out, utilize the radio resource reasonably, and decrease the average packet delay obviously.
Keywords :
IEEE standards; access protocols; telecommunication congestion control; wireless LAN; IEEE802.11 WLAN performance; MAC queue; adaptive contention window; binary exponential backoff algorithm; collision probability; collision status; contention aware adjusting mechanism; dynamical varying timing method; random varying timing scheme; Adaptive optics; Collision avoidance; IP networks; Information technology; Intelligent networks; Optical fiber networks; Optical saturation; Optical sensors; Timing; Wireless LAN; Wireless LAN; collision avoidance; contention window; dynamical varying timing;
Conference_Titel :
Intelligent Information Technology Application, 2009. IITA 2009. Third International Symposium on
Print_ISBN :
978-0-7695-3859-4
DOI :
10.1109/IITA.2009.27
