SummaryThe advances of localization-enabled technologies have led to huge volumes of large-scale human mobility data collected from Call Data Records (CDR), Global Positioning System (GPS) tracking systems, and Location Based Social networks (LBSN). These location data that encompass mobility patterns could generate an important value for building accurate and realistic mobility models and hence important value for fields of application including context-aware advertising, city-wide sensing applications, urban planning, and more. In this paper, we investigate the underlying spatio-temporal and structural properties for human mobility patterns, and propose the Community and Geography Aware Mobility (CGAM) model, which characterizes user mobility knowledge through several properties such as home location distribution, community members' distribution, and radius of gyration. We validate the CGAM synthetic traces against real-world GPS traces and against the traces generated by the baseline mobility model SMOOTH and assess that CGAM is accurate in predicting the performance of flooding-based and community-based routing protocols.
KEYWORDShuman mobility, mobility model, user patterns
| INTRODUCTIONCharacterizing human mobility for different (daily or longtime) scales has received substantial attention, with the goal of designing mobility models that can express accurately several fundamental properties revealed in real traces of dynamic networks. The analysis, validation, and prediction of the performance of these mobility models could be fundamental for many fields of application ranging from context-aware advertising to epidemics prevention.Mobility models are classified into synthetic and trace-based mobility models. 1 The synthetic traces generated by a synthetic mobility model are far to be realistic, while those generated by a trace-based mobility model are expected to reproduce the statistical features present in human mobility. Therefore, the research community is more interested in the development and the use of mobility models that are based on real traces collected from several indoor and outdoor sites. 2 Moreover, many studies reported the discovery of fundamental statistical properties of human mobility such as flight length, flight duration, pause-times, and inter-contact times, extracted from real traces collected from bank notes tracking, Global Positioning System (GPS), CDR, Bluetooth encounters, and Location Based Social networks (LBSN) traces. 2 In this paper, we present a new mobility model, called Community and Geography Aware Mobility (CGAM) that is able to reproduce statistical properties of human mobility, to express geography, individual and community behavior features and thus simulating straightforwardly real-life scenarios. The CGAM model is proposed to combine the