Optimization-Based Fragmental Transmission Method for Video Data in Opportunistic Networks

Optimization-Based Fragmental Transmission Method for Video Data in Opportunistic Networks
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机会网络中基于优化的视频数据分片传输方法

DOI:
10.23919/tst.2017.7986942
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发表时间:
2017-09
影响因子:
6.6
通讯作者:
He Zaobo
He Zaobo
中科院分区:
计算机科学2区
文献类型:
--
作者:
Li Peng;Wang Xiaoming;Lu Junling;Zhang Lichen;He Zaobo

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多媒体数据已成为机会主义网络中普遍传输的内容。视频数据量大,容易导致传输率低。将这些大数据分成小块或碎片是一个合理的选择。片段的大小对于传输效率是关键的,并且应该适应网络的通信能力。在经典的随机方向移动模型的基础上,提出了一种新的机会网络通信容量计算模型,即开销约束FACTS模型,并给出了一种最优分片大小算法。我们还设计和评估了在模拟环境中传播视频数据片段的方法和算法。实验结果验证了fi网络能力和最优分片方法的有效性。
: Multimedia data have become popularly transmitted content in opportunistic networks. A large amount of video data easily leads to a low delivery ratio. Breaking up these big data into small pieces or fragments is a reasonable option. The size of the fragments is critical to transmission efficiency and should be adaptable to the communication capability of a network. We propose a novel communication capacity calculation model of opportunistic network based on the classical random direction mobile model, define the restrain facts model of overhead, and present an optimal fragment size algorithm. We also design and evaluate the methods and algorithms with video data fragments disseminated in a simulated environment. Experiment results verified the effectiveness of the network capability and the optimal fragment methods.
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