Mobile caching policies for device-to-device (D2D) content delivery networking

Author

Kang, Hye J. ; Park, Kyoung Y. ; Kumin Cho ; Kang, Chung G.

Author_Institution

Sch. of Electr. Eng., Korea Univ., Seoul, South Korea

fYear

2014

fDate

April 27 2014-May 2 2014

Firstpage

299

Lastpage

304

Abstract

We consider a mobile content delivery network (mCDN) in which a special form of mobile devices designated as caching servers (caching-server device: CSD) can provide the near-by devices with some popular contents on demand via device-to-device (D2D) communication links. On the assumption that mobile CSDs are randomly distributed by a Poisson point process (PPP), an optimization problem is formulated to determine the probability of storing the individual content in each server in a manner that minimizes the average caching failure rate. Further, we present a low-complexity search algorithm, optimum dual-solution searching algorithm (ODSA), for solving this optimization problem. We identify the important characteristics of the optimal caching policies in the mobile environment that would serve as a useful aid in designing an mCDN.

Keywords

cache storage; internetworking; optimisation; probability; random processes; search problems; stochastic processes; telecommunication links; D2D communication links; D2D content delivery networking; ODSA; PPP; Poisson point process; average caching failure rate minimization; caching-server device; content storing probability; device-to-device communication links; device-to-device content delivery networking; low-complexity search algorithm; mCDN; mobile content delivery network; mobile devices; near-by devices; optimal mobile caching policies; optimization problem; optimum dual-solution searching algorithm; randomly distributed mobile CSD; Conferences; Social network services; Caching Probability; Caching Server Device; Device-to-device Communication; Mobile Contents Distribution Network (CDN); Poisson Point Process;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications Workshops (INFOCOM WKSHPS), 2014 IEEE Conference on

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/INFCOMW.2014.6849248

Filename

6849248