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AuthorBian, Chaoyi
AuthorZhao, Tong
AuthorLi, Xiaoming
AuthorDu, Xiaojiang
AuthorGuizani, Mohsen
AuthorYan, Wei
Available date2021-07-05T10:58:33Z
Publication Date2016
Publication NameIEEE Wireless Communications and Networking Conference, WCNC
ResourceScopus
URIhttp://dx.doi.org/10.1109/WCNC.2016.7564926
URIhttp://hdl.handle.net/10576/21111
AbstractMost applications in urban Vehicular Ad hoc NETworks (VANETs) rely on information sharing, such as real-Time traffic information queries, advertisements, etc. However, existing data dissemination techniques cannot guarantee satisfactory performance when a lot of information requests come from all around the network. Because these pieces of information are useful for multiple users located in various positions, it is beneficial to spread the cached copies around. Existing work proposed caching mechanisms and conducted simulations for validation, but there is a lack of theoretical analysis on the explicit caching effects. In this paper, we present the cache coverage ratio as the metric to quantify the caching effects, and theoretical analysis is given based on reasonable assumptions for urban VANETs, through which we find the affecting factors include vehicle density, transmission range, ratio of caching vehicles, etc. We deduce the quantitative relationship among them, which have similar forms as the cumulative density function of an exponential distribution. We conduct intensive simulations, which verify the theoretical analysis results match quite well with the simulated reality under different scenarios. 2016 IEEE.
Languageen
PublisherInstitute of Electrical and Electronics Engineers Inc.
Subjectanalysis
cache
simulation
VANET
TitleQuantifying caching effects in urban VANETs
TypeConference Paper
Volume Number2016-September
dc.accessType Abstract Only


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