title: Mobility-Aware Caching and Computation Offloading in 5G Ultra-Dense Cellular Networks.
abstract: Recent trends show that Internet traffic is increasingly dominated by content, which is accompanied by the exponential growth of traffic. To cope with this phenomena, network caching is introduced to utilize the storage capacity of diverse network devices. In this paper, we first summarize four basic caching placement strategies, i.e., local caching, Device-to-Device (D2D) caching, Small cell Base Station (SBS) caching and Macrocell Base Station (MBS) caching. However, studies show that so far, much of the research has ignored the impact of user mobility. Therefore, taking the effect of the user mobility into consideration, we proposes a joint mobility-aware caching and SBS density placement scheme (MS caching). In addition, differences and relationships between caching and computation offloading are discussed. We present a design of a hybrid computation offloading and support it with experimental results, which demonstrate improved performance in terms of energy cost. Finally, we discuss the design of an incentive mechanism by considering network dynamics, differentiated user's quality of experience (QoE) and the heterogeneity of mobile terminals in terms of caching and computing capabilities.
authors.affiliation: School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China. minchen2012@hust.edu.cn.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.affiliation: School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China. yixuehao@hust.edu.cn.
authors.forename: Yixue
authors.initials: Y
authors.lastname: Hao
authors.affiliation: Department of Computer Science, Pace University, New York, NY 10038, USA. mqiu@pace.edu.
authors.forename: Meikang
authors.initials: M
authors.lastname: Qiu
authors.affiliation: School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China. jsong@hust.edu.cn.
authors.forename: Jeungeun
authors.initials: J
authors.lastname: Song
authors.affiliation: School of Data and Computer Science, Sun Yat-sen University, Guangzhou 510006, China. wudi27@sysu.edu.cn.
authors.forename: Di
authors.initials: D
authors.lastname: Wu
authors.affiliation: Laboratory for Telecommunications, Faculty of Electrical Engineering, University of Ljubljana, Trzaska 25, SI-1000 Ljubljan, Slovenia. iztok.humar@fe.uni-lj.si.
authors.forename: Iztok
authors.initials: I
authors.lastname: Humar
keywords: caching; computation offloading; human mobility