| Research |
| [ CSI ] [ ETH ] |
[ Lab Manager ]
| [ Publications ] [ Research Opportunities ] [ Partners & Supporters ] [ Earlier Work ] |
|
A Mobility Model Based on WLAN Traces and its Validation |
| Cristian Tuduce, Thomas Gross, A Mobility Model Based on WLAN Traces and its Validation, Proceedings of IEEE International Conference on Computer Communications (INFOCOM'05), March 2005. [INFOCOM_2005.pdf] |
| The simulation of mobile networks calls for a mobility model to generate the trajectories of the mobile users (or nodes). It has been shown that the mobility model has a major influence on the behavior of the system. Therefore, using a realistic mobility model is important if we want to increase the confidence that simulations of mobile systems are meaningful in realistic settings. In this paper we present an executable mobility model that uses real-life mobility characteristics to generate mobility scenarios that can be used for network simulations. We present a structured framework for extracting the mobility characteristics from a WLAN trace, for processing the mobility characteristics to determine a parameter set for the mobility model, and for using a parameter set to generate mobility scenarios for simulations. To derive the parameters of the mobility model, we measure the mobility characteristics of users of a campus wireless network. Therefore, we call this model the {\em WLAN mobility model}. Mobility analysis confirms properties observed by other research groups. The validation shows that the WLAN model maps the real-world mobility characteristics to the abstract world of network simulators with a very small error. For users that do not have the possibility to capture a WLAN trace, we explore the value space of the WLAN model parameters and show how different parameters sets influence the mobility of the simulated nodes. |
| [ Publications ] [ Research Opportunities ] [ Partners & Supporters ] [ Earlier Work ] |