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Deriving the Suspended Backoff Counter Value Distribution in CSMA/CA

by Raymond J Jayabal, Lau Chiew Tong
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 28 - Number 9
Year of Publication: 2011
Authors: Raymond J Jayabal, Lau Chiew Tong
10.5120/3417-4768

Raymond J Jayabal, Lau Chiew Tong . Deriving the Suspended Backoff Counter Value Distribution in CSMA/CA. International Journal of Computer Applications. 28, 9 ( August 2011), 14-20. DOI=10.5120/3417-4768

@article{ 10.5120/3417-4768,
author = { Raymond J Jayabal, Lau Chiew Tong },
title = { Deriving the Suspended Backoff Counter Value Distribution in CSMA/CA },
journal = { International Journal of Computer Applications },
issue_date = { August 2011 },
volume = { 28 },
number = { 9 },
month = { August },
year = { 2011 },
issn = { 0975-8887 },
pages = { 14-20 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume28/number9/3417-4768/ },
doi = { 10.5120/3417-4768 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:14:19.380737+05:30
%A Raymond J Jayabal
%A Lau Chiew Tong
%T Deriving the Suspended Backoff Counter Value Distribution in CSMA/CA
%J International Journal of Computer Applications
%@ 0975-8887
%V 28
%N 9
%P 14-20
%D 2011
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Most of today’s wireless LANs and PANs employ the use of the CSMA/CA protocol. In CSMA/CA, a randomly initialised counter is used to reduce the probability of nodes accessing the channel at the same time. In most implementations, this counter is suspended when the channel is idle. In this paper, we derive and verify through simulation the exact analytical expression for the distribution of this counter’s value. For further validation, we show how it can be used to obtain the protocol’s idle period distribution under saturation loads. For this latter distribution, we provide simulation results to show the accuracy of the formula compared to one derived using the de-facto first-order Markov channel state model.

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Index Terms

Computer Science
Information Sciences

Keywords

Wireless data networks LAN PAN CSMA/CA random backoff algorithm

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