Traffic Offloading for Online Video Service in Vehicular Networks: A Cooperative Approach
Traffic Offloading for Online Video Service in Vehicular Networks: A Cooperative Approach
复制标题
车载网络中在线视频服务的流量分流:一种合作方法
DOI:
10.1109/tvt.2018.2837024
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发表时间:
2018-05
影响因子:
6.8
通讯作者:
Zhuang Weihua
中科院分区:
文献类型:
--
作者:
Sun Yanglong;Xu Le;Tang Yuliang;Zhuang Weihua
Online video service becomes prevalent nowadays, as people are accustomed to getting information in the form of videos. While home users can easily retrieve all kinds of contents onto their laptops or smartphones, vehicular users are constrained by intermittent connectivity to roadside units (RSUs). Besides, as the load of cellular infrastructure increases dramatically, it is envisioned that the cellular network can be offloaded by utilizing RSUs and vehicular relays. In this paper, we propose a cooperative downloading mechanism in heterogeneous vehicular networks that comprises vehicular ad hoc network and cellular network. In this mechanism, RSUs act as traffic managers to fetch proper data from the Internet and then distribute to vehicles in an approximately optimal manner. Specifically, based on vehicular mobility prediction and internode throughput estimation, a storage time aggregated graph is constructed for planning transmission scheme; then, an iterative greedy-driven algorithm is designed for a suboptimal solution, which has polynomial computational time complexity. Compared with max-throughput and min-delay cooperative downloading (MMCD), simulation results show that our approach outperforms MMCD by $5\%\text{$-$}25\%$ with respect to offload fraction.
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DOI:
10.1109/vtcspring.2018.8417806
发表时间:
2018-06
期刊:
2018 IEEE 87th Vehicular Technology Conference (VTC Spring)
影响因子:
--
作者:
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通讯作者:
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期刊:
IEEE/ACM Transactions on Networking
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发表时间:
2014-06-01
影响因子:
8.3
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通讯作者:
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DOI:
10.1109/tcsvt.2014.2376138
发表时间:
2015-07
影响因子:
8.4
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DOI:
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发表时间:
2002-10
期刊:
IEEE Trans. Circuits Syst. Video Technol.
影响因子:
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通讯作者:
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