TY  - JOUR
A1  - Karamshuk, Dmytro
A1  - Boldrini, Chiara
A1  - Conti, Marco
A1  - Passarella, Andrea
SP  - 157
Y1  - 2011///
PB  - IEEE
VL  - 49
EP  - 165
N2  - Mobile ad hoc networks enable communications between clouds of mobile devices without the need for a preexisting infrastructure. One of their most interesting evolutions are opportunistic networks, whose goal is to also enable communication in disconnected environments, where the general absence of an end-to-end path between the sender and the receiver impairs communication when legacy MANET networking protocols are used. The key idea of OppNets is that the mobility of nodes helps the delivery of messages, because it may connect, asynchronously in time, otherwise disconnected subnetworks. This is especially true for networks whose nodes are mobile devices (e.g., smartphones and tablets) carried by human users, which is the typical OppNets scenario. In such a network where the movements of the communicating devices mirror those of their owners, finding a route between two disconnected devices implies uncovering habits in human movements and patterns in their connectivity (frequencies of meetings, average duration of a contact, etc.), and exploiting them to predict future encounters. Therefore, there is a challenge in studying human mobility, specifically in its application to OppNets research. In this article we review the state of the art in the field of human mobility analysis and present a survey of mobility models. We start by reviewing the most considerable findings regarding the nature of human movements, which we classify along the spatial, temporal, and social dimensions of mobility. We discuss the shortcomings of the existing knowledge about human movements and extend it with the notion of predictability and patterns. We then survey existing approaches to mobility modeling and fit them into a taxonomy that provides the basis for a discussion on open problems and further directions for research on modeling human mobility.
KW  - MANET networking
KW  -  OppNets research
KW  -  disconnected subnetworks
KW  -  human mobility models
KW  -  mobile ad hoc networks
KW  -  mobile devices
KW  -  opportunistic networks
KW  -  taxonomy 
JF  - IEEE Communications Magazine
IS  - 12
UR  - http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6094021&isnumber=6093994
TI  - Human mobility models for opportunistic networks
ID  - eprints1556
AV  - none
ER  -