Multiple Mobile Data Offloading Through Delay Tolerant Networks

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Multiple Mobile Data Offloading Through Delay Tolerant Networks (2011)

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by Yong Li , Guolong Su , Pan Hui , Depeng Jin , Li Su , Lieguang Zeng

Venue:	6th ACM International Workshop on Challenged Networks (CHANTS 2011), Las Vegas
Citations:	21 - 2 self

BibTeX

@INPROCEEDINGS{Li11multiplemobile,
    author = {Yong Li and Guolong Su and Pan Hui and Depeng Jin and Li Su and Lieguang Zeng},
    title = {Multiple Mobile Data Offloading Through Delay Tolerant Networks},
    booktitle = {6th ACM International Workshop on Challenged Networks (CHANTS 2011), Las Vegas},
    year = {2011}
}

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Abstract

To cope with the explosive traffic demands and limited capacity provided by the current cellular networks, Delay Tolerant Networking (DTN) is used to migrate traffic from the cellular networks to the free and high capacity device-todevice networks. The current DTN-based mobile data offloading models do not address the heterogeneity of mobile traffic and are based on simple network assumptions. In this paper, we establish a mathematical framework to study the problem of multiple mobile data offloading under realistic network assumptions, where 1) mobile data is heterogeneous in terms of size and lifetime, 2) mobile users have different data subscribing interests, and 3) the storage of offloading helpers is limited. We formulate the maximum mobile data offloading as a Submodular Function Maximization problem with multiple linear constraints of limited storage and propose greedy, approximated and optimal algorithms for different offloading scenarios. We show that our algorithms can effectively offload data to DTNs by extensive simulations which employ real traces of both humans and vehicles.

Keyphrases

multiple mobile data offloading delay tolerant network mobile user submodular function maximization problem optimal algorithm real trace limited storage current dtn-based mobile data cellular network limited capacity high capacity device-todevice network multiple mobile data mobile traffic extensive simulation mobile data simple network assumption maximum mobile data delay tolerant networking propose greedy mathematical framework realistic network assumption explosive traffic demand different data subscribing interest multiple linear constraint current cellular network

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