Caching at the wireless edge: design aspects, challenges, and future directions

By Dong Liu, Binqiang Chen, Chenyang Yang, Andreas F. Molisch. IEEE Communications Magazine, 2016

434 citations recorded by the source corpus.

Caching at the wireless edge is a promising way to boost spectral efficiency and reduce energy consumption of wireless systems. These improvements are rooted in the fact that popular contents are reused, asynchronously, by many users. In this article we first introduce methods to predict the popularity distributions and user preferences, and the impact of erroneous information. We then discuss the two aspects of caching systems, content placement and delivery. We expound the key differences between wired and wireless caching, and outline the differences in the system arising from where the caching takes place (e.g., at base stations or on the wireless devices themselves). Special attention is paid to the essential limitations in wireless caching, and possible trade-offs between spectral efficiency, energy efficiency, and cache size.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/a93e7aa3705a6b02306dfd113274ff2c006497d1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computer Networks and Communications

1. Rui Zhang
2. Qingqing Wu
3. Yong Zeng
4. Zhu Han
5. Jun Li
6. Meixia Tao
7. Feng Shu
8. Jie Xu

In Electrical and Electronic Engineering

1. Rui Zhang
2. Qingqing Wu
3. Yong Zeng
4. Zhu Han
5. Changsheng You
6. Robert Schober
7. Shuowen Zhang
8. Beixiong Zheng

Citations in the corpus

• On Multi-Access Edge Computing: A Survey of the Emerging 5G Network Edge Cloud Architecture and Orchestration (2017, neutral): “popularity and the characteristics of the wireless environment is elaborated in [44] and [50].”
• A Survey of Multi-Access Edge Computing in 5G and Beyond: Fundamentals, Technology Integration, and State-of-the-Art (2019, neutral): “In terms of caching places, the state-ofthe-art showed that the requested content can be cached at macro-eNBs, small-eNBs, and/or end users, where the storage resource of nearby mobile devices is exploited for content caching and D2D communication is used for content retrieving [263].”
• Accessing From the Sky: A Tutorial on UAV Communications for 5G and Beyond (2019, background): “Wireless caching is regarded as a promising solution to support the explosive growth of the mobile multimedia traffic arising from e.g., video streaming and mobile TV [225].”
• A Survey on Mobile Edge Networks: Convergence of Computing, Caching and Communications (2017, neutral): “4) Smart User Association: In cache enabled ultra dense HetNet, caching may change the way of user association other than the conventional nearest distance or SINR based method [157].”
• Design of Contract-Based Trading Mechanism for a Small-Cell Caching System (2017, background): “The redundancy of transmissions can be effectively mitigated by storing popular contents into local caches of network nodes positioned at the edge of wireless networks, known as wireless caching [13]–[15].”