Enhanced backoff scheme in CSMA/CA for IEEE 802.11

Wen-Kuang Kuo; Fang Liu; C.-C. Jay Jay Kuo

doi:10.1117/12.486778

23 July 2003 Enhanced backoff scheme in CSMA/CA for IEEE 802.11

Wen-Kuang Kuo, Fang Liu, C.-C. Jay Jay Kuo

Proceedings Volume 5100, Digital Wireless Communications V; (2003) https://doi.org/10.1117/12.486778
Event: AeroSense 2003, 2003, Orlando, Florida, United States

Abstract

An enhanced CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) protocol to be used in the Medium Access Control (MAC) layer of the IEEE 802.11 standard for wireless local area networks (wireless LANs) is proposed in this work. In wireless LANs, the CSMA/CA protocol supports asynchronous data transfer, and adopts an acknowledgement mechanism to confirm successful transmissions and a handshaking mechanism to reduce collisions. In both cases, a binary exponential backoff mechanism is used. The enhanced protocol improves the exponential backoff scheme by dynamically adjusting the contention window (CW) around the optimal value. Moreover, an analytical model based on the Markov chain is developed to analyze the system performance in terms of throughput and delay. Numerical results are presented to show the effect of the proposed backoff mechanism.

Citation Download Citation

Wen-Kuang Kuo, Fang Liu, and C.-C. Jay Jay Kuo "Enhanced backoff scheme in CSMA/CA for IEEE 802.11", Proc. SPIE 5100, Digital Wireless Communications V, (23 July 2003); https://doi.org/10.1117/12.486778

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available