An Adaptive Concurrency Control QOS Agent for Ubiquitous Computing Environments

  • Eung Nam Ko
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4097)


This paper presents the design of the adaptive concurrency control QOS agent, which is running on RCSM(Reconfigurable Context Sensitive Middleware) for ubiquitous networks. RCSM provides standardized commu-nication protocols to interoperate an application with others under dynamically changing situations. It describes a hybrid software architecture that is running on situation-aware middleware for a web based distance education system which has an object with a various information for each session and it also supports multicasting with this information. There are two approaches to software architecture on which distributed, collaborative applications are based. Those include CACV(Centralized-Abstraction and Centralized-View) and RARV(Replicated-Abstraction and Replicated-View). We propose an adaptive concurrency control QOS agent based on a hybrid software architecture which is adopting the advantage of CACV and RARV for situation-aware middleware.


Ubiquitous Computing Concurrency Control Local Window Centralize Architecture Floor Control 
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  1. 1.
    Holfelder, W.: Interactive remote recording and playback of multicast videoconferences. In: Proc. of IDMS 1997, Darmstadt, Germany (September 1997)Google Scholar
  2. 2.
    Fortino, G., Nigro, L.: A Cooperative Playback System for On-Demand Multimedia Sessions over Internet. In: IEEE International Conference on Multimedia and Expo ICME2000 Proceedings, NY, USA, July 30 – August 2, vol. I, pp. 41–44 (2000)Google Scholar
  3. 3.
    Boyle, T.: Design for Multimedia Learning. Prentice Hall, Europe (1997)Google Scholar
  4. 4.
    Yau, S.S., Karim, F.: Contention-Sensitive Middleware for Real-time Software in Ubiquitous Computing Environments. In: Proc. 4th IEEE Int’l Symp. on Object-Oriented Real-time Distributed Computing (ISORC 2001), May 2001, pp. 163–170 (2001)Google Scholar
  5. 5.
    Steinmetz, R., Nahrstedt, K.: Multimedia: computing, communications & Applications. Prentice Hall P T RGoogle Scholar
  6. 6.
    Yau, S.S., Wang, Y., Huang, D., In, H.: A Middleware Situation-Aware Contract Specification Language for Ubiquitous Computing. In: FTDCS 2003Google Scholar
  7. 7.
    Saha, D., Mukherjee, A.: Pervasive computing: a paradigm for the 21st century. IEEE Computer 36(3), 25–31 (2003)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Eung Nam Ko
    • 1
  1. 1.Department of Information & CommunicationBaekseok UniversityChungNamKorea

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