COMIC: Intelligent Contention Window Control for Distributed Medium Access

Author

Pudasaini, Subodh ; Kang, Moonsoo ; Shin, Seokjoo ; Copeland, John A.

Author_Institution

Dept. of Comput. Eng., Chosun Univ., Gwangju, South Korea

Volume

14

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

656

Lastpage

658

Abstract

In this letter, a scheme for Collision Mitigation with Intelligent Contention Window Control (COMIC) is proposed for backoff based collision resolution algorithm. COMIC intelligently mitigates collisions by probabilistically maximizing the selection likelihood of relatively less collision-probable contention slots over the backoffed contention window. A unified Markovian model for the Distribution Coordination Function (DCF) that incorporates COMIC, DCF_comic, is formulated for the performance analysis. The performance results show that DCF_comic outperforms the conventional DCF in both throughput and average packet delay due to the significant reduction in packet collisions.

Keywords

Markov processes; access protocols; intelligent control; packet radio networks; probability; telecommunication congestion control; COMIC; average packet delay; backoff based collision resolution algorithm; backoffed contention window; collision mitigation; distributed medium access; distributed packet radio networks; distribution coordination function; intelligent contention window control; selection likelihood maximization probability; unified Markovian model; Broadcasting; Cascading style sheets; Collision mitigation; Delay; Distributed control; IEEE 802.11 Standards; Intelligent control; Media Access Protocol; Multiaccess communication; Performance analysis; Shape; Throughput; Tuning; Backoff; COMIC; DCF; collision mitigation;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.07.100287

Filename

5545621