Paper Info
Title
Frame Collision Reduction Method Employing Adaptive Transmission Control For Ieee802.11 Wireless Lan System
Abstract
The IEEE 802.11 distributed coordinated function (DCF) adopts carrier sense multiple access with collision avoidance (CSMA/CA) as its medium access control (MAC) protocol. In a wireless local area network (WLAN) stations (STAs) congested situation, the performance of the WLAN system is significantly degraded due to a collision between the STAs. In this paper, we propose a simple method that decreases the number of frame collisions. After a successful transmission, the proposed method refrains from transmission during certain time which is defined as post-inter-frame space (Post-IFS). This mechanism improves the system performance including the throughput characteristics and access delay by reducing the number of competing STAs. The length of the Post-IFS is a key factor in improving the system performance for the proposed method. If the access point (AP) can estimate the optimal value of the Post-IFS, collision-free operation similar to that in centralized control is performed. Even if the optimal Post-IFS is not estimated, the number of competing STAs and the collision probability are decreased. Computer simulations verify that the proposed method achieves 40% higher system throughput compared to the conventional CSMA/CA for a network with 50 STAs.
Year
DOI
Venue
2014
10.1587/transcom.E97.B.1790
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
Field
DocType
CSMA/CA, IEEE802.11, collision reduction, dense, IFS
Transmission (mechanics),Computer science,Computer network,Collision,Wireless lan,Carrier sense multiple access with collision avoidance
Journal
Volume
Issue
ISSN
E97B
9
0916-8516
Citations 
PageRank 
References 
1
0.37
5
Authors
5
Name
Order
Citations
PageRank
Akira Kishida143.50
Masashi Iwabuchi2285.60
Toshiyuki Shintaku320.78
Takeshi Onizawa43911.20
Tetsu Sakata5153.59