Design and performance evaluation of an optimal collision avoidance mechanism over congested and noisy channels for IEEE 802.11 DCF access method

Jiunn Deng, Hsu Chun Yen

Research output: Contribution to journalArticle

Abstract

For the IEEE 802.11 protocol, the basic access method in its medium access control (MAC) layer protocol is the distributed coordination function (DCF). However, this strategy incurs a high collision probability and channel utilization is degraded in bursty arrival or congested scenarios. Besides, when a frame is collided on a wired network, the sender should slow down, but when one is lost on a wireless network, the sender should try harder. Extending the backoff time just makes matters worse because it brings bandwidth wastage. In this paper, we identify the relationship between backoff parameters and channel BER and put forth a pragmatic problem-solving solution. In addition to theoretical analysis, simulations are conducted to evaluate the performance scheme. As it turns out, our design indeed provides a remarkable improvement in a heavy load and error-prone WLANs environment.

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalLecture Notes in Computer Science
Volume3391
Publication statusPublished - 2005 Sep 9

Fingerprint

Collision Avoidance
IEEE 802.11
Collision avoidance
Performance Evaluation
Network protocols
Medium Access Control
Medium access control
Wireless LAN
Wireless local area networks (WLAN)
Wireless Networks
Wireless networks
Theoretical Analysis
Collision
Bandwidth
Scenarios
Evaluate
Simulation
Design
Relationships
Strategy

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

@article{20af2755ffe14d28888977ab9bbfc7f8,
title = "Design and performance evaluation of an optimal collision avoidance mechanism over congested and noisy channels for IEEE 802.11 DCF access method",
abstract = "For the IEEE 802.11 protocol, the basic access method in its medium access control (MAC) layer protocol is the distributed coordination function (DCF). However, this strategy incurs a high collision probability and channel utilization is degraded in bursty arrival or congested scenarios. Besides, when a frame is collided on a wired network, the sender should slow down, but when one is lost on a wireless network, the sender should try harder. Extending the backoff time just makes matters worse because it brings bandwidth wastage. In this paper, we identify the relationship between backoff parameters and channel BER and put forth a pragmatic problem-solving solution. In addition to theoretical analysis, simulations are conducted to evaluate the performance scheme. As it turns out, our design indeed provides a remarkable improvement in a heavy load and error-prone WLANs environment.",
author = "Jiunn Deng and Yen, {Hsu Chun}",
year = "2005",
month = "9",
day = "9",
language = "English",
volume = "3391",
pages = "11--20",
journal = "Lecture Notes in Computer Science",
issn = "0302-9743",
publisher = "Springer Verlag",

}

TY - JOUR

T1 - Design and performance evaluation of an optimal collision avoidance mechanism over congested and noisy channels for IEEE 802.11 DCF access method

AU - Deng, Jiunn

AU - Yen, Hsu Chun

PY - 2005/9/9

Y1 - 2005/9/9

N2 - For the IEEE 802.11 protocol, the basic access method in its medium access control (MAC) layer protocol is the distributed coordination function (DCF). However, this strategy incurs a high collision probability and channel utilization is degraded in bursty arrival or congested scenarios. Besides, when a frame is collided on a wired network, the sender should slow down, but when one is lost on a wireless network, the sender should try harder. Extending the backoff time just makes matters worse because it brings bandwidth wastage. In this paper, we identify the relationship between backoff parameters and channel BER and put forth a pragmatic problem-solving solution. In addition to theoretical analysis, simulations are conducted to evaluate the performance scheme. As it turns out, our design indeed provides a remarkable improvement in a heavy load and error-prone WLANs environment.

AB - For the IEEE 802.11 protocol, the basic access method in its medium access control (MAC) layer protocol is the distributed coordination function (DCF). However, this strategy incurs a high collision probability and channel utilization is degraded in bursty arrival or congested scenarios. Besides, when a frame is collided on a wired network, the sender should slow down, but when one is lost on a wireless network, the sender should try harder. Extending the backoff time just makes matters worse because it brings bandwidth wastage. In this paper, we identify the relationship between backoff parameters and channel BER and put forth a pragmatic problem-solving solution. In addition to theoretical analysis, simulations are conducted to evaluate the performance scheme. As it turns out, our design indeed provides a remarkable improvement in a heavy load and error-prone WLANs environment.

UR - http://www.scopus.com/inward/record.url?scp=24144457723&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24144457723&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:24144457723

VL - 3391

SP - 11

EP - 20

JO - Lecture Notes in Computer Science

JF - Lecture Notes in Computer Science

SN - 0302-9743

ER -