Challenges of Mobile Social Device Caching

• Published in: IEEE access Vol. 4; pp. 8938 - 8947
• Main Authors: Yecheng Wu, Sha Yao, Yang Yang, Ting Zhou, Hua Qian, Honglin Hu, Hamalainen, Matti
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cache storage; Caching; Content management; Device caching; Device-to-device communication; Electronic devices; Mobile handsets; mobile social network; physical network; Radio equipment; Resource management; Routing protocols; social aware content placement; social aware radio resource management; social aware routing; Social factors; Social network services; Social networks; Wireless networks
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2016.2633485

Wireless caching at network edges (in user devices or in base stations) is considered to be a promising solution to alleviate backhaul overload in future wireless networks. Device-to-Device (D2D)-assisted caching emerges as an attractive option. Due to the nature of D2D communications, social networks and the characteristics within are intertwined with the challenges in mobile device caching, and it has become an active area of research. In this paper, we first introduce the structure and key concepts of mobile social device caching (MSDC), elaborating the connections and differences of it to traditional caching. Furthermore, we advocate several major areas of research challenges for MSDC, such as content placement, radio resource management and routing. Moreover, a demonstration is present to illustrate the modeling of the MSDC, and performance analysis is carried out to manifest its great potentials.