Coff: Contact- Duration-Aware Cellular Traffic Offloading Over Delay   Tolerant Networks

doi:10.1109/TVT.2014.2381220

CORC > 北京大学 > 软件与微电子学院

	Coff: Contact- Duration-Aware Cellular Traffic Offloading Over Delay Tolerant Networks
	Li, Zhi ; Liu, Yan ; Zhu, Hongsong ; Sun, Limin
刊名	IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
	2015
关键词	Cellular traffic offloading content distribution networks delay tolerant networks (DTN) network coding URBAN VEHICULAR NETWORKS HUMAN MOBILITY DISSEMINATION
DOI	10.1109/TVT.2014.2381220
英文摘要	In recent years, the capacity of cellular networks has hardly kept pace with the dramatic explosion of cellular traffic from emerging mobile applications. To address this issue, a number of studies have been proposed to offload the cellular traffic using delay-tolerant networks (DTNs) opportunistically formed by mobile devices. These offloading schemes rely on the assumption of small-size content, which can be entirely transmitted over a single DTN contact. However, such an assumption, which was probably valid in the past, can no longer hold with the increasing popularity of large-size multimedia contents in the future. In this paper, we propose a novel contact-duration-aware offloading scheme called Coff, which consists of several designs that are specially tailored for DTNs. First, we use content fragmentation to utilize short contacts. Second, we adopt network coding to achieve a near-optimum dissemination. Finally, we design a greedy load allocation (GLA) algorithm to achieve no less than (1 - 1/e) of the optimum. Extensive simulations on both synthetic and real-world traces show that Coff is more efficient than the baselines, which extend from state-of-art DTN-based offloading schemes with content fragmentation and network coding.; National Natural Science Foundation of China through the General Program of China [61202066]; National High Technology Research and Development Program of China (863 Program) [2012AA013104]; Chinese Academy of Sciences [XDA06040100]; SCI(E); EI; ARTICLE; lizhi@iie.ac.cn; ly@ss.pku.edu.cn; zhuhongsong@iie.ac.cn; sunlimin@iie.ac.cn; 11; 5257-5268; 64
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/435864]
专题	软件与微电子学院
推荐引用方式 GB/T 7714	Li, Zhi,Liu, Yan,Zhu, Hongsong,et al. Coff: Contact- Duration-Aware Cellular Traffic Offloading Over Delay Tolerant Networks[J]. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY,2015.
APA	Li, Zhi,Liu, Yan,Zhu, Hongsong,&Sun, Limin.(2015).Coff: Contact- Duration-Aware Cellular Traffic Offloading Over Delay Tolerant Networks.IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY.
MLA	Li, Zhi,et al."Coff: Contact- Duration-Aware Cellular Traffic Offloading Over Delay Tolerant Networks".IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (2015).