Cell Breathing in Wireless LANs: Algorithms and Evaluation

Modeling Methodology for Wireless LANs Performance Evaluation

Performance evaluation of wireless LAN is a key point which allows to compute both quantitative parameters (e.g.throughput) and qualitative one (e.g. fairness). Classically, authors use simulation tools or Markovian process in order to model the nodes, the MAC protocol and the network topology. But, each time a new MAC protocol or a new network topology needs to be evaluated, a new model should...

Theoretical Evaluation of Offloading through Wireless LANs

Offloading of cellular traffic through a wireless local area network (WLAN) is theoretically evaluated. First, empirical data sets of the locations of WLAN internet access points are analyzed and an inhomogeneous Poisson process consisting of high, normal, and low density regions is proposed as a spatial point process model for these configurations. Second, performance metrics, such as mean ava...

Exact Analysis of Rate Adaptation Algorithms in Wireless LANs

Rate adaptation plays a key role in determining the performance of wireless LANs. In this paper, we introduce a semi-Markovian framework to analyze the performance of two of the most popular rate adaptation algorithms used in wireless LANs, namely Automatic Rate Fallback (ARF) and Adaptive Automatic Rate Fallback (AARF). Given our modeling assumptions, the analysis is exact and provides closed ...

Wireless LANs

Wireless LANs

Wireless LANs based on the IEEE 802.11 standard have achieved wide customer acceptance in the enterprise environment. They are expected to continue to expand in popularity and become ubiquitous communication systems even in private and public places. This paper discusses the basics of the wireless LAN physical layer, focusing on radio tranceiver specifications and design options.