NDLI: Homesick Lévy Walk: A Mobility Model Having Ichi-Go Ichi-e and Scale-Free Properties of Human Encounters

Content Provider	IEEE Xplore Digital Library
Author	Fujihara, A. Miwa, H.
Copyright Year	2014
Description	Author affiliation: Dept. of Manage. Inf. Sci., Fukui Univ. of Technol., Fukui, Japan (Fujihara, A.) \|\| Grad. Sch. of Sci. & Technol., Kwansei Gakuin Univ., Sanda, Japan (Miwa, H.)
Abstract	In recent years, mobility models have been reconsidered based on findings by analyzing some big datasets collected by GPS sensors, cell phone call records, and Geotagging. To understand the fundamental statistical properties of the frequency of serendipitous human encounters, we conducted experiments to collect long-term data on human contact using short-range wireless communication devices which many people frequently carry in daily life. By analyzing the data we showed that the majority of human encounters occur once-in-an-experimental-period: they are Ichi-go Ichi-e. We also found that the remaining more frequent encounters obey a power-law distribution: they are scale-free. To theoretically find the origin of these properties, we introduced as a minimal human mobility model, Homesick Lévy walk, where the walker stochastically selects moving long distances as well as Lévy walk or returning back home. Using numerical simulations and a simple mean-field theory, we offer a theoretical explanation for the properties to validate the mobility model. The proposed model is helpful for evaluating long-term performance of routing protocols in delay tolerant networks and mobile opportunistic networks better since some utility-based protocols select nodes with frequent encounters for message transfer.
Sponsorship	IEEE Comput. Soc.
Starting Page	576
Ending Page	583
File Size	733095
Page Count	8
File Format	PDF
ISBN	9781479935758
ISSN	07303157
DOI	10.1109/COMPSAC.2014.81
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-07-21
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Numerical models Bluetooth IEEE 802.11 Standards Numerical simulation Mobile communication Wireless communication Routing protocols Delay Tolerant Networks Mobility models Contact frequency Ichi-go Ichi-e Power law
Content Type	Text
Resource Type	Article
Subject	Computer Science Applications Software

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