Revealing contact interval patterns in large scale urban vehicular ad hoc networks

Authors:
Yong Li;Depeng Jin;Pan Hui;Li Su;Lieguang Zeng
Affiliations:
Tsinghua University, Beijing, WV, China;Tsinghua University, Beijing, WV, China;TU-Berlin, Berlin, Germany;Tsinghua University, Beijing, WV, China;Tsinghua University, Beijing, WV, China
Venue:
ACM SIGCOMM Computer Communication Review - Special october issue SIGCOMM '12
Year:
2012

Citing 2
Cited 1

Impact of Traffic Influxes: Revealing Exponential Intercontact Time in Urban VANETs

IEEE Transactions on Parallel and Distributed Systems
Performance Modeling of Message Dissemination In Vehicular Ad Hoc Networks with Priority

IEEE Journal on Selected Areas in Communications

Greedy forwarding for mobile social networks embedded in hyperbolic spaces

Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM

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Abstract

Contact interval between moving vehicles is one of the key metrics in vehicular ad hoc networks (VANETs), which is important to routing schemes and network capacity. In this work, by carrying out an extensive experiment involving tens of thousands of operational taxis in Beijing city, we find an invariant character that the contact interval can be modeled by a three-segmented distribution, and there exists a characteristic time point, up to which the contact interval obeys a power law distribution, while beyond which it decays as an exponential one. This property is in sharp contrast to the recent empirical data studies based on Shanghai vehicular mobility, where the contact interval exhibits only exponential distribution.