Title :
An Analysis of Different Backoff Functions for an IEEE 802.11 WLAN
Author :
Xu, Dongxia ; Sakurai, Taka ; Vu, Hai L.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC
Abstract :
We compare the performance of different backoff functions for the multiple access protocol in an IEEE 802.11 wireless LAN (WLAN). We provide a unified analytical model with explicit expressions for the mean and standard deviation of the access delay for generalized exponential, polynomial and linear backoff functions. Using our model, we show that linear and polynomial backoffs with appropriate parameter settings can improve upon binary exponential backoff specified in the 802.11 WLAN standards, in terms of throughput, access delay statistics and packet drop rate.
Keywords :
access protocols; statistical analysis; wireless LAN; IEEE 802.11 WLAN; access delay statistics; binary exponential backoff; generalized exponential backoff function; linear backoff function; mean deviation; multiple access protocol; packet drop rate; polynomial backoff function; standard deviation; Access protocols; Analytical models; Australia; Delay; Internet; Polynomials; Stability; Statistics; Throughput; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.427
