The Effect of Emerging Traffic Patterns on High Speed Wireless LANs

Summary, in English

As average packet sizes in wireless networks shrink and data

rates increase, the fundamental CSMA mechanism in the

802.11 protocol family is put under stress. With the emerg-

ing 802.11ax standard, the carrier sensing mechanism is low-

ering the efficiency of the protocol to the level of random

access (ALOHA), and as future-generation 802.11 standards

emerge, CSMA-based protocols will fall below this level. In

this paper we make two main contributions to the litera-

ture. First, we will extend previous analysis to examine

more closely the quality of the information obtained from

channel sensing, in particular the probability of this infor-

mation being incorrect and the correlation between true and

sensed channel state. Second, we examine how to use this

analysis to improve existing CSMA-based protocols, in par-

ticular the 802.11 protocol family.

• Author: Emma Fitzgerald; Björn Landfeldt
• Department/s: Department of Electrical and Information Technology; ELLIIT: the Linköping-Lund initiative on IT and mobile communication
• Publishing year: 2015
• Language: English
• Pages: 235-244
• Publication/Series: MSWiM '15: Proceedings of the 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
• Links: http://dx.doi.org/10.1145/2811587.2811600
• Document type: Conference paper
• Publisher: Association for Computing Machinery (ACM)
• Topic: Communication Systems
• Keywords: MAC; wireless LAN; 802.11ax; 802.11; CSMA
• Conference name: The 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWIM)
• Conference date: 2015-11-02
• Conference place: Cancun, Mexico
• Status: Published
• Project: ELLIIT LU P01: WP2 Networking solutions
• Research group: Networking
• ISBN/ISSN/Other: ISBN: 978-1-4503-3762-5