Abstract
Wireless network research still lacks methods to evaluate the performance that can be expected from application layer protocols. User behavior is the predominant factor affecting network performance on this layer. It has two aspects: user mobility and user network usage. These aspects are not orthogonal, but highly correlated: a user’s mobility pattern will influence her usage of the network. Existing approaches, however, reduce the modeling of user behavior to analytical mobility models and network traffic models, thereby separating these intertwined parameters. This paper demonstrates how the use of an integrated view based on the users’ real-world activity can explain network-relevant parameters both with respect to mobility and to network usage and thereby allows a more natural modeling of user behavior. The evaluation within a campus scenario shows that such an activity based model captures the motion and service usage much more realistically than existing models.
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The work done for this paper is partially sponsored by the German Research Community (DFG) in the context of the priority program (SPP) no. 1140. A short version of this article has been published in [2].
Birgitta König-Ries is the head of the endowed Heinz-Nixdorf chair for Practical Computer Science at the Department of Mathematics and Computer Science of the Friedrich-Schiller-Universität in Jena. Before joining the University of Jena, she has held a temporary professorship at the Technische Universität München (2003–2004) and has worked as an assistant professor with the University of Karlsruhe (since 2001). Before that, from 1999 until 2001 she was a postdoctoral research associate at the Center for Advanced Computer Studies at the University of Louisiana at Lafayette and the IT2 Institute of Florida International University. She received my PhD degree from the University of Karlsruhe in 1999. Her main research interest is on resource usage in dynamic environments, such as mobile (ad hoc) networks and peer to peer systems. The solutions developed are based on the service-oriented computing paradigm.
Michael Klein studied computer science at the University of Karlsruhe. Since 2001, he is working towards his PhD at the Institute for Program Structures and Data Organization at the University of Karlsruhe. His main research area are semantic descriptions for mobile services.
Tobias Breyer studied computer science at the University of Karlsruhe in Germany. In his diploma thesis, he developed many ideas for the activity based model. Since 2004, he is working at SAP in Walldorf, Germany on Business Process Management and Workflows.
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König-Ries, B., Klein, M. & Breyer, T. Activity-Based User Modeling in Wireless Networks. Mobile Netw Appl 11, 267–277 (2006). https://doi.org/10.1007/s11036-006-4478-4
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DOI: https://doi.org/10.1007/s11036-006-4478-4