Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
The changing usage of a mature campus-wide wireless network
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User Mobility for Opportunistic Ad-Hoc Networking
WMCSA '04 Proceedings of the Sixth IEEE Workshop on Mobile Computing Systems and Applications
Towards a model of user mobility and registration patterns
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Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
Spray and wait: an efficient routing scheme for intermittently connected mobile networks
Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
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Reality mining: sensing complex social systems
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Proceedings of the 7th ACM international symposium on Mobile ad hoc networking and computing
Opportunistic content distribution in an urban setting
Proceedings of the 2006 SIGCOMM workshop on Challenged networks
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
Media sharing based on colocation prediction in urban transport
Proceedings of the 14th ACM international conference on Mobile computing and networking
Opportunistic forwarding in workplaces
Proceedings of the 2nd ACM workshop on Online social networks
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Noisemap: multi-tier incentive mechanisms for participative urban sensing
Proceedings of the Third International Workshop on Sensing Applications on Mobile Phones
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This paper1 presents a novel framework called UIM2, which collects both location information and ad hoc contacts of the human movement at the University of Illinois campus using Google Android phones. Each UIM experiment phone encompasses a Bluetooth scanner and a wifi scanner capturing both Bluetooth MAC addresses and wifi access point MAC addresses in proximity of the phone. Then, Bluetooth MAC addresses are used to infer contact information and the wifi MAC addresses are used to infer physical location of the phone. Using the contact and location information, we investigate first the sensitivity analysis on contact duration and inter-contact duration. Then, we characterize the regularity of people movement, visit duration of people at locations, and the popularity of locations. Finally, we present the Hybrid Epidemic data dissemination protocol, which uses both wifi access point and ad hoc contact to expedite the data forwarding. We evaluate Hybrid Epidemic protocol with our collected ad hoc and wifi traces and find that in comparison with Epidemic data dissemination protocol, the Hybrid Epidemic protocol improves data forwarding delay considerably.