Non-Linear Optimization of IEEE802.11e Super-frame Configuration

Abstract

-As the potential data-rates of wireless local area networks (WLANs) continue to rise, the ability of such systems to support a rich set of applications increases. The centralized control functions in the IEEE802.11 family of standards have been developed to enable both data-oriented (browsing, email, etc.) traffic and quality of service (QoS) sensitive traffic to coexist. Balancing the demands of the two types of traffic has, to date, been achieved by algorithms based on experimental, heuristic data. In this paper we present a non-linear optimization theory-based approach for deriving optimum configurations with the IEEE802.11/e centralized control functions in mind. The optimization algorithm itself (the "Barrier Method") is well-known; the challenge in problems such as this is in the formation of the utility function and its constraints, so these are explored in detail. Finally, we show the advantages of this approach over discrete look-up based approaches.

Modeling and performance analysis of an alternative to IEEE 802.11e Hybrid Control Function

“…IEEE decided to enhance them with advanced features, thus, the new version that corresponds to DCF is the EDCA protocol, while the one corresponding to PCF is the HCCA protocol. Some recent solutions that claim to further improve HCF QoS support can be found in [14][15][16][17][18].…”

Profiling Delay and Throughput Characteristics of Interactive Multimedia Traffic over WLANs Using OPNET

“…al. in [6]. In their paper a non-linear optimization theory-based approach, using the "Barrier Method", for deriving optimum configurations with centralized control functions were considered.…”