Modeling Spatial and Temporal Dependencies of User Mobility in Wireless Mobile Networks

Abstract--Realistic mobility models are fundamental to evaluate the performance of protocols in mobile ad hoc networks. Unfortunately, there are no mobility models that capture the nonhomogeneous behaviors in both space and time commonly found in reality, while at the same time being easy to use and analyze. Motivated by this, we propose a time-variant community mobility model, referred to as the TVC model, which realistically captures spatial and temporal correlations. We devise the communities that lead to skewed location visiting preferences, and time periods that allow us to model time dependent behaviors and periodic re-appearances of nodes at specific locations. To demonstrate the power and flexibility of the TVC model, we use it to generate synthetic traces that match the characteristics of a number of qualitatively different mobility traces, including wireless LAN traces, vehicular mobility traces, and human encounter traces. More importantly, we show that, despite the high lev...

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Wei-jen Hsu, Thrasyvoulos Spyropoulos, Konstantinos Psounis, Ahmed Helmy
• Keywords: CORR 2008, Education, Mobility Model, Mobility Traces, TVC Model