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DROiD: Adapting to Individual Mobility Pays Off in Mobile Data Offloading
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BibTeX
@MISC{Amorim_droid:adapting,
author = {Marcelo Dias De Amorim and Vania Conan},
title = {DROiD: Adapting to Individual Mobility Pays Off in Mobile Data Offloading},
year = {}
}
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Abstract
IFIP, (2014). This is the author’s version of the work. It is posted here by permission of IFIP for your personal use. Not for redistribution. The definitive version was published in IFIP Networking 2014. Abstract—Cellular operators count on the potentials of offload-ing techniques to relieve their overloaded data channels. Beyond standard access point-based offloading strategies, a promising alternative is to exploit opportunistic direct communication links between mobile devices. Nevertheless, achieving efficient device-to-device offloading is challenging, as communication opportuni-ties are, by nature, dependent on individual mobility patterns. We propose, design, and evaluate DROiD (Derivative Re-injection to Offload Data), an original method to finely control the distribu-tion of popular contents throughout a mobile network. The idea is to use the infrastructure resources as seldom as possible. To this end, DROiD injects copies through the infrastructure only when needed: (i) at the beginning, in order to trigger the dissemination, (ii) if the evolution of the opportunistic dissemination is below some expected pace, and (iii) when the delivery delay is about to expire, in order to guarantee 100 % diffusion. Our strategy is particularly effective in highly dynamic scenarios, where sudden creation and dissolution of clusters of mobile nodes prevent contents to diffuse properly. We assess the performance of DROiD by simulating a traffic information service on a realistic large-scale vehicular dataset composed of more than 10,000 nodes. DROiD substantially outperforms other offloading strategies, saving more than 50 % of the infrastructure traffic even in the case of tight delivery delay constraints. DROiD allows terminal-to-terminal offloading of data with very short maximum reception delay, in the order of minutes, which is a realistic bound for cellular user acceptance. Index Terms—Mobile data offloading; hybrid networks; delay-tolerant networks. I.
Keyphrases
individual mobility pay mobile data offloading ifip networking promising alternative author version realistic large-scale vehicular dataset opportunistic direct communication link short maximum reception delay tight delivery delay constraint communication opportuni-ties personal use abstract cellular operator infrastructure resource definitive version infrastructure traffic individual mobility pattern opportunistic dissemination hybrid network data channel popular content dynamic scenario index term mobile data offloading sudden creation mobile node delivery delay cellular user acceptance offload data original method delay-tolerant network mobile network offload-ing technique efficient device-to-device offloading mobile device traffic information service terminal-to-terminal offloading expected pace realistic bound derivative re-injection
