Content-Centric Mobile Edge Caching

Tiankui Zhang,Yuanwei Liu,Arumugam Nallanathan,Xinyuan Fang

doi:10.1109/access.2019.2962856

Abstract

With the explosion of data volume, it becomes challenging to deliver high quality service to mobile users. Therefore, edge caching has received significant attentions since it can bring contents near mobile users, to boost spectral efficiency, and reduce backhaul load of mobile networks. Due to limited storage resources within mobile networks, it is important to improve efficiency of content management in edge caching. In this article, we propose an integrated content-centric mobile network framework for edge caching in 5G networks, which can leverage content-centric networking (CCN), achieve content-oriented information management, and increase content delivery efficiency. We elaborately design the cache-enabled mobile network architecture, CCN based function entities, CCN embedded protocol stack, and content retrieval process, and develop several effective approaches for tackling practical implementation constraints of CCN based edge caching. We demonstrate that our content caching strategies can significantly enhance edge caching performance. To further improve the performance of content-centric mobile edge caching, we identify promising open research directions.

Highlights

Research on the generation mobile networks (5G) is primarily driven by the combination of the expected increases in traffic capacity demands and the support for new use cases [1]
CONTENT-CENTRIC MOBILE NETWORK FRAMEWORK In order to achieve content-oriented information management and increase content delivery efficiency, we propose a framework for centric networking (CCN) based edge caching in 5G networks
OPEN ISSUES AND CONCLUSION In this article, we have proposed a content-centric mobile network framework for edge caching in 5G networks

Summary

INTRODUCTION

Research on the generation mobile networks (5G) is primarily driven by the combination of the expected increases in traffic capacity demands and the support for new use cases [1]. The essential parts of the proposed framework, namely, the cache-enabled mobile network architecture, CCN based function entities, CCN embedded protocol implementation, and content retrieval process are elaborated. The proposed framework includes cache-enabled mobile network architecture, CCN based function entities, CCN embedded protocol implementation, and content retrieval process. We design the functionalities of the CCN based BBU pool in the proposed framework since it is in charge of cache store allocation, content information management, and conversion the CCN to IP protocol. PRACTICAL IMPLEMENTATION CONSIDERATIONS CCN based edge caching in 5G networks potentially alleviates backhaul traffic load and reduces content access delay, it imposes several implementation constraints in practical scenarios, such as naming data management, mobility and incentive of UTs, radio resource management with edge caching, etc. Since most of the optimization objectives, such as energy consumption minimization, spectrum efficiency maximization, and content access latency minimization, are conflicting with each other, designing reasonable utility functions to compromise the above optimization objectives can be a promising direction

EDGE CACHING AT U

Findings

OPEN ISSUES AND CONCLUSION