A delay-tolerant network architecture for challenged internets
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
Routing in a delay tolerant network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
The changing usage of a mature campus-wide wireless network
Proceedings of the 10th annual international conference on Mobile computing and networking
Practical routing in delay-tolerant networks
Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
Reality mining: sensing complex social systems
Personal and Ubiquitous Computing
A community based mobility model for ad hoc network research
REALMAN '06 Proceedings of the 2nd international workshop on Multi-hop ad hoc networks: from theory to reality
Building realistic mobility models from coarse-grained traces
Proceedings of the 4th international conference on Mobile systems, applications and services
Power law and exponential decay of inter contact times between mobile devices
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Delay tolerant mobile networks (DTMNs): controlled flooding in sparse mobile networks
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
SIMPS: using sociology for personal mobility
IEEE/ACM Transactions on Networking (TON)
Scaling properties of delay tolerant networks with correlated motion patterns
Proceedings of the 4th ACM workshop on Challenged networks
The sociable traveller: human travelling patterns in social-based mobility
Proceedings of the 7th ACM international symposium on Mobility management and wireless access
IEEE/ACM Transactions on Networking (TON)
CREST: an opportunistic forwarding protocol based on conditional residual time
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
Delay estimation of a user-preferred content distribution scheme in disruption tolerant networks
AINTEC '09 Asian Internet Engineering Conference
Heterogeneity in contact dynamics: helpful or harmful to forwarding algorithms in DTNs?
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
A simple model of contact patterns in delay-tolerant networks
Wireless Networks
Evaluating the spatial dimension of contacts in opportunistic networks
MobiOpp '10 Proceedings of the Second International Workshop on Mobile Opportunistic Networking
Heterogeneity of device contact process in pocket switched networks
WASA'10 Proceedings of the 5th international conference on Wireless algorithms, systems, and applications
Modeling contacts and mobility for wireless mobile networks
UIC'10 Proceedings of the 7th international conference on Ubiquitous intelligence and computing
Strangers help friends to communicate in opportunistic networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
A sociability-based routing scheme for delay-tolerant networks
EURASIP Journal on Wireless Communications and Networking - Special issue on opportunistic and delay tolerant networks
Characterising aggregate inter-contact times in heterogeneous opportunistic networks
NETWORKING'11 Proceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part II
Opportunistic wireless communication in theme parks: a study of visitors mobility
CHANTS '11 Proceedings of the 6th ACM workshop on Challenged networks
Modelling inter-contact times in social pervasive networks
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Putting contacts into context: mobility modeling beyond inter-contact times
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
Proceedings of the third ACM international workshop on Mobile Opportunistic Networks
Vicinity-based DTN characterization
Proceedings of the third ACM international workshop on Mobile Opportunistic Networks
A survey of adaptive services to cope with dynamics in wireless self-organizing networks
ACM Computing Surveys (CSUR)
Collection and analysis of multi-dimensional network data for opportunistic networking research
Computer Communications
Proceedings of the 18th annual international conference on Mobile computing and networking
Population protocols on real social networks
Proceedings of the 9th ACM symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Ego network models for Future Internet social networking environments
Computer Communications
Social-aware multicast in disruption-tolerant networks
IEEE/ACM Transactions on Networking (TON)
Mobile data offloading: how much can WiFi deliver?
IEEE/ACM Transactions on Networking (TON)
Epidemic content distribution: empirical and analytic performance
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
Examining vicinity dynamics in opportunistic networks
Proceedings of the 8th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
| Hi-index | 0.00 |
A good understanding of contact patterns in delay tolerant networks (DTNs) is elemental to the design of effective routing or content distribution schemes. Prior work has typically focused on inter-contact time patterns in the aggregate. In this paper, we argue that pairwise inter-contact patterns are a more refined and efficient tool for characterizing DTNs. First, we provide a detailed statistical analysis of pairwise contact and inter-contact times in three reference DTN data sets. We characterize heterogeneities in contact times and inter-contact times, and find that the empirical distributions of inter-contact times tend to be well fitted by log-normal curves, with exponential curves also fitting a significant portion of the distributions. Second, we investigate analytically the relationship between pairwise and aggregate inter-contact times. In particular, we consider both the exponential and log-normal cases and show analytically how the aggregation of pairwise inter-contacts may lead to aggregate inter-contacts with power laws of various degrees.