Information-centric cost-efficient optimization for multimedia content delivery in mobile vehicular networks
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- 作者：Changqiao Xu ; a ; cqxu@bupt.edu.cn ; Wei Quanb ; Athanasios V. Vasilakosc ; Hongke Zhangb ; Gabriel-Miro Munteand
- 关键词：Cost-efficient ; Multimedia content delivery ; Vehicular networks ; Information-centric networking ; Mixed integer programming
- 刊名：Computer Communications
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：99
- 期：Complete
- 页码：93-106
- 全文大小：3478 K
- 卷排序：99
文摘
EcoMD makes use of ICN’s inherent multi-path, multi-source and multi-caching features in vehicular network environments. EcoMD is based on modeling the multimedia delivery process, considering two essential factors: content mobility and provider supply-demand balance. A mixed integer programming (MIP) optimization is formulated to minimize the economic cost associated to guaranteed quality levels for the multimedia services. The proposed MIP optimal problem is proven as NP-hard. EcoMD includes three newly designed heuristic solutions for the NP-hard problem focusing on finding sub-optimal solutions by considering (i) prioritybased path selection, (ii) maintaining the least number of sources and (iii) ondemand in-path caching enhancement, respectively. EcoMD evaluation is based on extensive comparative simulation-based testing. The results demonstrate the efficiency of the proposed heuristic solutions and show how the proposed method outperforms other state-of-the-art solutions in terms of both quality-related and cost-efficiency-related metrics.