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Super-Diffusive Behavior of Mobile Nodes from Mobility Traces
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lee, Chul-Ho Kim, Sungwon Eun, Do Young |
| Copyright Year | 2007 |
| Abstract | Mobility is the most important component in mobile ad-hoc networks (MANETs) and delay-tolerant networks (DTNs) . In this paper, we first investigate numerous GPS mobility traces for various mobile nodes and observe super-diffusive behavior in all GPS traces, which is characterized by a faster-than-linear growth rate of the mean square displacement (MSD) of a mobile node. We show that current synthetic mobility models are unable to produce various degrees of diffusive behavior, and propose to use a set of Ĺevy walk models as an alternative. We also investigate a large amount of access point (AP) based traces and then develop a theoretical framework built upon continuous time random walk (CTRW) formalism, in which one can identify the degree of diffusive behavior of mobile nodes even under possibly heavy-tailed pause time distribution, as in the case of reality. We demonstrate the utility of MSD in that it remains largely unaffected by measurement errors, under which other statistic al information could be severely altered. In addition, our simple simulation using epidemic routing protocol suggests that the diffusive behavior of mobile nodes should be correctly captured and taken into account for the design and comparison study of network protocols. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www4.ncsu.edu/~dyeun/pub/techrep07-superdiffusive.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
