Periodic Intermittently Connected-Based Data Delivery in Opportunistic Networks

20145 citationsJournal Articlebronze Open Access

Authors

Lei Wu · University of Electronic Science and Technology of China

Dean Wu · University of Electronic Science and Technology of China

Ming Liu · University of Electronic Science and Technology of China

Xiaomin Wang · University of Electronic Science and Technology of China

Haigang Gong · University of Electronic Science and Technology of China

Abstract

提出一种在机会网络中基于周期性间歇连通的数据传输策略PICD(periodic intermittently connectedbaseddata delivery in opportunistic networks).通过有效利用节点间的周期间歇连通性改善数据传输性能.节点传输概率的计算则充分考虑了其与汇聚点间存在的间歇多跳路径,并将其与消息容忍的传输延迟相结合.首先,采用随机动态规划的方法建立与延迟相关的传输概率模型;然后,通过基于多跳的函数空间迭代法求出一个周期内的与延迟相关的传输概率分布矩阵;节点面向不同消息延迟的传输概率则基于分布矩阵计算获得,以此作为选择下一跳的依据.与延迟相关的概率转发机制提高了消息在容忍的延迟内被成功递交的可能.仿真实验结果表明,与现有的几种数据传输算法相比,在节点具有循环运动特征的环境下,PICD具有较高的数据传输成功率和较低的递交延迟.

Topics & Keywords

Opportunistic and Delay-Tolerant Networks Caching and Content Delivery Cooperative Communication and Network Coding

Publication Details

Published in: Journal of Software

Volume 24, Issue 3, pp. 507-525

DOI: 10.3724/sp.j.1001.2013.04227

Field-Weighted Citation Impact: 0.36

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Periodic Intermittently Connected-Based Data Delivery in Opportunistic Networks

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Abstract

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Publication Details