Energy-efficient proactive caching with multipath routing

计算机科学 多路径路由 多播 计算机网络 单播 能源消耗 分布式计算 多径传播 高效能源利用 布线(电子设计自动化) 路由协议 静态路由 生态学 生物 电气工程 频道(广播) 工程类
作者
Yantong Wang,Vasilis Friderikos
出处
期刊:Computer Networks [Elsevier BV]
卷期号:216: 109272-109272 被引量:2
标识
DOI:10.1016/j.comnet.2022.109272
摘要

The ever-continuing explosive growth of on-demand content distribution has imposed great pressure on mobile/wireless network infrastructures. To ease congestion in the network and to increase perceived user experience, caching of popular content closer to the end-users can play a significant role and as such this issue has received significant attention over the last few years. Additionally, energy saving is treated as a fundamental requirement in the design of next-generation mobile networks. However, there has been little attention to the overlapping area between energy saving and network caching especially when considering multipath routing. To this end, this paper proposes an energy-efficient caching with multipath routing support. The proposed scheme provides a joint anchoring of popular content into a set of potential caching nodes with optimized multipath support whilst ensuring a balance between transmission and caching energy cost. The proposed model also considers different content delivery modes, such as multicast and unicast. Two separated Integer-Linear Programming (ILP) models are formulated for each delivery mode. To tackle the curse of dimensionality we then provide a greedy simulated annealing algorithm, which not only reduces the time complexity but also provides a competitive performance. A wide set of numerical investigations reveal that the proposed scheme reduces the energy consumption up to 75% compared with other widely used caching approaches under the premise of network resource limitation. Sensitivity analysis to different parameters is also meticulously discussed in this paper.
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