DCF modeling and optimization of long-distance IEEE802.11n point-to-point links

Conference: Mobilkommunikation – Technologien und Anwendungen - Vorträge der 19. ITG-Fachtagung
05/21/2014 - 05/22/2014 at Osnabrück, Deutschland

Proceedings: ITG-Fb. 249: Mobilkommunikation – Technologien und Anwendungen

Pages: 6Language: englishTyp: PDF

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Rademacher, Michael; Jonas, Karl (Hochschule Bonn-Rhein-Sieg, Sankt Augustin, Germany)
Kretschmer, Mathias (Fraunhofer Fokus, Sankt Augustin, Germany)

This work describes extensions to the well-known Distributed Coordination Function (DCF) model to account for IEEE802.11n point-to-point links. The developed extensions cover adaptions to the throughput and delay estimation for this type of link as well peculiarities of hardware and implementations within the Linux Kernel. Instead of using simulations, the approach was extensively verified on real-world deployments at various link distances. Additionally, trials were conducted to optimize the CWmin values and the number of retries to maximize throughput and minimize delay. The results of this work can be used to estimate the properties of long-distance 802.11 links beforehand, allowing the network to be planned more accurately.