Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
A message ferrying approach for data delivery in sparse mobile ad hoc networks
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Towards a model of user mobility and registration patterns
ACM SIGMOBILE Mobile Computing and Communications Review
Characterizing mobility and network usage in a corporate wireless local-area network
Proceedings of the 1st international conference on Mobile systems, applications and services
Access and mobility of wireless PDA users
ACM SIGMOBILE Mobile Computing and Communications Review
Reality mining: sensing complex social systems
Personal and Ubiquitous Computing
Crossing over the bounded domain: from exponential to power-law inter-meeting time in MANET
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Narrowcasting: an empirical performance evaluation study
Proceedings of the third ACM workshop on Challenged networks
Phase transitions of opportunistic communication
Proceedings of the third ACM workshop on Challenged networks
Towards new methods for mobility data gathering: content, sources, incentives
Proceedings of the 1st ACM International Workshop on Hot Topics of Planet-Scale Mobility Measurements
SniffMob: inferring human contact patterns using wireless devices
Proceedings of the 1st ACM International Workshop on Hot Topics of Planet-Scale Mobility Measurements
IEEE/ACM Transactions on Networking (TON)
Spectral efficiency of mobility-assisted podcasting in cellular networks
MobiOpp '10 Proceedings of the Second International Workshop on Mobile Opportunistic Networking
A survey of adaptive services to cope with dynamics in wireless self-organizing networks
ACM Computing Surveys (CSUR)
Fair content dissemination in participatory DTNs
Ad Hoc Networks
An analysis of evaluation practices for DTN routing protocols
Proceedings of the seventh ACM international workshop on Challenged networks
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Recently, it has been established on multiple experimental data sets that human contact processes exhibit heavy-tailed inter-event distributions. This characteristic makes it difficult to transport data with a finite transfer time in a network of mobile devices, relying on opportunistic contacts only. Using various experimental data sets, we analyze how different types of communication infrastructure impact the feasibility of data transfers among mobile devices.The first striking result is that the heavy tailed nature of the contact processes persists after infrastructure is introduced. We establish experimentally that infrastructure improves significantly multiple opportunistic contact properties, relevant to opportunistic forwarding algorithms. We discuss how infrastructure can be used to design simpler and more efficient (in terms of delay and number of hops) opportunistic forwarding algorithms. In addition to this, for the first time in a study like this, the communication pattern of nodes is taken into account in the analysis. We also show that node pairs that have a real-life history of communication have contact properties that are better for opportunistic message forwarding to each other than what other node pairs have.