Adaptive contents dissemination method for floating contents

Ryo Yamamoto, Atsufumi Kashima, Taku Yamazaki, Yoshiaki Tanaka

研究成果: Conference contribution

6 被引用数 (Scopus)


Floating content (FC) is a decentralized on-demand information sharing method with ad hoc communication among terminals. In FC, all contents are anchored to specific locations and shared among mobile terminals inside a predefined sharing area, which is referred to as an anchor zone (AZ), as if the contents float in the geographical area. However, contents may be vanished if there is no terminal holding the contents inside an AZ because the sharing procedure depends on ad hoc communication and infrastructure-based supports are not available. Thus, terminal density in the AZ significantly affects the content lifetime since there are less communication opportunities among terminals in sparse environments and disseminating contents are difficult. To address this issue, a method that adaptivel adjusts the effective radius of an AZ, namely the area in which information is shared with FC, has been proposed. The principle of the method is to expand the area according to the terminal density in the AZ. Although expanding the effective radius easily prolongs the lifetime of contents, unregulated expansion may lead to excessive and unnecessary dissemination. This paper proposes an effective radius adjustment and transmission timing control method to realise efficient and effective information sharing with FC. The proposed method employs terminal density and terminal encounter rate to estimate further communication opportunities. The simulation results show that the proposed method could achieve longer content lifetime with less overhead.

ホスト出版物のタイトル2019 IEEE 90th Vehicular Technology Conference, VTC 2019 Fall - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
出版ステータスPublished - 2019 9月
イベント90th IEEE Vehicular Technology Conference, VTC 2019 Fall - Honolulu, United States
継続期間: 2019 9月 222019 9月 25


名前IEEE Vehicular Technology Conference


Conference90th IEEE Vehicular Technology Conference, VTC 2019 Fall
国/地域United States

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学


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