Efficient Data Diffusion and Elimination Control Method for Spatio-Temporal Data Retention System

Shumpei YAMASAKI  Daiki NOBAYASHI  Kazuya TSUKAMOTO  Takeshi IKENAGA  Myung J. LEE  

IEICE TRANSACTIONS on Communications   Vol.E104-B   No.7   pp.805-816
Publication Date: 2021/07/01
Publicized: 2021/01/08
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2020CQP0010
Type of Manuscript: Special Section PAPER (Special Section on Future Directions of Research and Development on Communication Quality)
STD,  data retention,  diffusion and elimination,  dynamic transmission interval control,  

Full Text: FreePDF

With the development and spread of Internet of Things technologies, various types of data for IoT applications can be generated anywhere and at any time. Among such data, there are data that depend heavily on generation time and location. We define these data as spatio-temporal data (STD). In previous studies, we proposed a STD retention system using vehicular networks to achieve the “Local production and consumption of STD” paradigm. The system can quickly provide STD for users within a specific location by retaining the STD within the area. However, this system does not take into account that each type of STD has different requirements for STD retention. In particular, the lifetime of STD and the diffusion time to the entire area directly influence the performance of STD retention. Therefore, we propose an efficient diffusion and elimination control method for retention based on the requirements of STD. The results of simulation evaluation demonstrated that the proposed method can satisfy the requirements of STD, while maintaining a high coverage rate in the area.