Proactive content caching for mobile video utilizing transportation systems and evaluation through field experiments

Kenji Kanai*, Takeshi Muto, Jiro Katto, Shinya Yamamura, Tomoyuki Furutono, Takafumi Saito, Hirohide Mikami, Kaoru Kusachi, Toshitaka Tsuda, Wataru Kameyama, Yong Jin Park, Takuro Sato

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


In order to provide high-quality and highly reliable video delivery services for mobile users, especially train passengers, we propose a proactive content caching scheme that uses transportation systems. In our system, we place content servers with cache capability [e.g., content centric networking/named data networking (CCN/NDN)] in every train and station. Video segments encapsulated by MPEG-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) are distributed and pre-cached by the station servers before the trains arrive at the stations. The trains receive content via high-speed wireless transport, such as wireless LANs or millimeter waves, when they stop at the stations. We developed prototype systems based on hypertext transfer protocol and CCN/NDN protocol, evaluate their performance through two field experiments that uses actual trains, and compare with traditional video streaming over cellular networks. Such evaluations indicate that our system can achieve high-quality video delivery without interruption for up to 50 users simultaneously.

Original languageEnglish
Article number7485824
Pages (from-to)2102-2114
Number of pages13
JournalIEEE Journal on Selected Areas in Communications
Issue number8
Publication statusPublished - 2016 Aug


  • Proactive content caching
  • mobile video
  • transportation systems

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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