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

fYear

2008

fDate

21-24 Sept. 2008

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th

Conference_Location

Calgary, BC

ISSN

1090-3038

Print_ISBN

978-1-4244-1721-6

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2008.427

Filename

4657259