Real-time data processing based on caching algorithm in Ubiquitous Information Middleware

Jun Hwan Lee, Byung Kook Son, Kyung Lang Park, Cheong Ghil Kim, Shin Dug Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The infrastructure of ubiquitous computing system is basically formed by WSN (Wireless Sensor Network) and RFID (Radio Frequency Identification) systems. However, applications may have some difficulties in using information obtained from many different types of systems. RFID systems can only provide tag data from readers fixed at a certain location. On the other hand, WSNs deal with seamless data from sensors of which network size is restricted. Therefore, we propose a middleware architecture to integrate WSNs and RFID systems. To integrate two systems, the middleware should support following conditions. The middleware requires common interfaces to communicate with heterogeneous networks. The lack of standard data model means that common data model is needed. In addition, the middleware should be able to provide real-time data for the applications. The proposed middleware uses sensor-agent as a common interface to communicate with different networks. The middleware translates raw data aggregated from sensor-agent into integrated data model. Finally, the middleware has a data caching algorithm based on valid time mechanism. Using the caching algorithm, the middleware can improve the performance of real-time and history data processing. Our experiment shows that the overall workload has been reduced and data can be provided in real-time.

Original languageEnglish
Title of host publication20th International Conference on Parallel and Distributed Computing Systems, PDCS 2007
PublisherInternational Society for Computers and Their Applications (ISCA)
Pages62-67
Number of pages6
ISBN (Electronic)9781604233926
Publication statusPublished - 2007
Event20th International Conference on Parallel and Distributed Computing Systems, PDCS 2007 - Las Vegas, United States
Duration: 2007 Sep 242007 Sep 26

Publication series

Name20th International Conference on Parallel and Distributed Computing Systems, PDCS 2007

Conference

Conference20th International Conference on Parallel and Distributed Computing Systems, PDCS 2007
Country/TerritoryUnited States
CityLas Vegas
Period07/9/2407/9/26

Bibliographical note

Funding Information:
This research was supported by the UPLUS project of Ministry of Commerce, Industry and Energy.

Publisher Copyright:
© 20th International Conference on Parallel and Distributed Computing Systems, PDCS 2007. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Hardware and Architecture

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