Access and mobility of wireless PDA users
ACM SIGMOBILE Mobile Computing and Communications Review
Spray and wait: an efficient routing scheme for intermittently connected mobile networks
Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
The message delay in mobile ad hoc networks
Performance Evaluation - Performance 2005
Spatial Node Distribution of the Random Waypoint Mobility Model with Applications
IEEE Transactions on Mobile Computing
Opportunistic content distribution in an urban setting
Proceedings of the 2006 SIGCOMM workshop on Challenged networks
Performance modeling of epidemic routing
Computer Networks: The International Journal of Computer and Telecommunications Networking
Impact of Human Mobility on Opportunistic Forwarding Algorithms
IEEE Transactions on Mobile Computing
Impact of mobility on the performance of relaying in ad hoc networks - Extended version
Computer Networks: The International Journal of Computer and Telecommunications Networking
Delay and resource analysis in MANETs in presence of throwboxes
Performance Evaluation
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
Capacity of a wireless ad hoc network with infrastructure
Proceedings of the 8th ACM international symposium on Mobile ad hoc networking and computing
Delay and capacity trade-offs in mobile ad hoc networks: a global perspective
IEEE/ACM Transactions on Networking (TON)
ACM SIGMOBILE Mobile Computing and Communications Review
Coupons: A Multilevel Incentive Scheme for Information Dissemination in Mobile Networks
IEEE Transactions on Mobile Computing
Media sharing based on colocation prediction in urban transport
Proceedings of the 14th ACM international conference on Mobile computing and networking
Relays, base stations, and meshes: enhancing mobile networks with infrastructure
Proceedings of the 14th ACM international conference on Mobile computing and networking
The changing usage of a mature campus-wide wireless network
Computer Networks: The International Journal of Computer and Telecommunications Networking
The ONE simulator for DTN protocol evaluation
Proceedings of the 2nd International Conference on Simulation Tools and Techniques
The age of gossip: spatial mean field regime
Proceedings of the eleventh international joint conference on Measurement and modeling of computer systems
Delay estimation of a user-preferred content distribution scheme in disruption tolerant networks
AINTEC '09 Asian Internet Engineering Conference
Message ferries as generalized dominating sets in intermittently connected mobile networks
MobiOpp '10 Proceedings of the Second International Workshop on Mobile Opportunistic Networking
Deploying mesh nodes under non-uniform propagation
INFOCOM'10 Proceedings of the 29th conference on Information communications
Strangers help friends to communicate in opportunistic networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
DTN support for news dissemination in an urban area
NETWORKING'11 Proceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part I
Capacity of ad hoc wireless networks with infrastructure support
IEEE Journal on Selected Areas in Communications
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We are studying the practicality of news dissemination over a Delay Tolerant Network (DTN) in an urban area. The target application is the distribution of the electronic version of a newspaper in a large city. Therefore, although strict time constraints do not apply, spreading the information should be achieved within a reasonable delay. Two performance metrics, the spreading time and the message delay, are considered. The message delay is the delay required to transmit content from a mobile node to another node, while the spreading time is the delay needed for the content to spread over a part of the network. Firstly, our goal is to increase our understanding of the performance of a simple DTN environment when content is distributed solely through inter-contact of mobile nodes. We contribute both the closed-form expression and the asymptotic expression of the expected message delay to the literature when considering the probability of interest/acceptance for a given content in each contact. The asymptotic expression provides the insights on the efficient ways for improving the expected message delay in the case of an area with low or high density of mobile nodes. We also show a relationship between the expected message delay and the expected spreading time in such environment. Secondly, if the delay is found to be excessive, we suggest the deployment of some data kiosks in the environment to better support the dissemination of content. Data kiosks are simple devices that receive content directly from the source, usually using wired or cellular networks. A key issue when designing efficiently such network is to determine the number of data kiosks required to satisfy a performance target. We investigate both an upper bound and a lower bound of the number of data kiosks to distribute the content over a geographical area within an expected spreading time objective. We also show the important property that those bounds scale linearly with the contact rates between a mobile node and a data kiosk. Finally, we consider the question of the optimal location of data kiosks in a more realistic scenario where users move along a transportation system (like a subway or suburban train) that connects several regions. We provide an analysis used to decide which subway stop should host a data kiosk to optimize the spreading time. These findings support the view that the optimal location of data kiosks is influenced not only by the conditions of a region but also by the target number of mobile users that should receive the content. Analytical results are validated by simulations under a number of mobility models and real datasets.