An 802.11 MAC layer covert channel

TE Calhoun Jr, X Cao, Y Li… - … and Mobile Computing, 2012 - Wiley Online Library
For extremely sensitive applications, it may be advantageous for users to transmit certain
types of data covertly over the network. This provides an additional layer of security to that …

Collision-aware design of rate adaptation for multi-rate 802.11 WLANs

J Choi, J Na, Y Lim, K Park… - IEEE Journal on Selected …, 2008 - ieeexplore.ieee.org
One of the key challenges in designing a rate adaptation scheme for IEEE 802.11 wireless
LANs (WLANs) is to differentiate bit errors from link-layer collisions. Many recent rate …

H-RCA: 802.11 collision-aware rate control

KD Huang, KR Duffy, D Malone - IEEE/ACM Transactions on …, 2012 - ieeexplore.ieee.org
Rate control methodologies that are currently available in IEEE 802.11 network cards
seriously underutilize network resources and, in addition, per-second throughputs suffer …

Adaptive optimization of rate adaptation algorithms in multi-rate WLANs

J Choi, J Na, K Park, C Kim - 2007 IEEE International …, 2007 - ieeexplore.ieee.org
Rate adaptation is one of the basic functionalities in today's 802.11 wireless LANs (WLANs).
Although it is primarily designed to cope with the variability of wireless channels and …

Threshold optimization for rate adaptation algorithms in IEEE 802.11 WLANs

Y Song, X Zhu, Y Fang, H Zhang - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
Rate adaptation algorithms play a crucial role in IEEE 802.11 WLANs. While the network
performance depends greatly on the rate adaptation algorithms, the detailed implementation …

Error-resilient video encoding and transmission in multirate wireless LANs

A Argyriou - IEEE Transactions on Multimedia, 2008 - ieeexplore.ieee.org
In this paper, we present a cross-layer approach for video transmission in wireless LANs that
employs joint source and application-layer channel coding, together with rate adaptation at …

Analysis of cross-layer interaction in multirate 802.11 WLANs

J Choi, K Park, C Kim - IEEE Transactions on Mobile Computing, 2008 - ieeexplore.ieee.org
Recent works in empirical 802.11 wireless LAN performance evaluation have shown that
cross-layer interactions in WLANs can be subtle, sometimes leading to unexpected results …

Authentication in 802.11 LANs using a covert side channel

TE Calhoun, R Newman… - 2009 IEEE International …, 2009 - ieeexplore.ieee.org
We present a covert side channel technique that uses the 802.11 MAC rate switching
protocol as cover for covert authentication messages. Covert authentication prevents an …

An adaptive polling interval and short preamble media access control protocol for wireless sensor networks

D Chen, Z Tao - Frontiers of Computer Science in China, 2011 - Springer
Media access control (MAC) protocols control how nodes access a shared wireless channel.
It is critical to the performance of wireless sensor networks (WSN). An adaptive polling …

On Wireless Local Area Networks

K Huang - 2010 - mural.maynoothuniversity.ie
Wireless Local Area Networks (WLANs) have been widely developed during this decade,
due to their mobility and exibility. During this period, IEEE 802.11 has become the dominant …