Hard Real-Time Communication with the Timed Token Protocol: Current State and Challenging Problems

  • Authors:

  • Sijing Zhang;Alan Burns;Jing Chen;E. Stewart Lee

  • Affiliations:

  • School of Computing and Technology, University of Derby, Kedleston Road, Derby DE22 1GB, U.K. S.Zhang@derby.ac.uk;Real-Time Systems Research Group, Department of Computer Science, University of York, Heslington, York YO1 5DD, U.K. burns@cs.york.ac.uk;Department of Electrical Engineering, National Cheng-Kung University, Tainan City 701, Taiwan, R.O.C. jchen@mail.ncku.edu.tw;Centre for Communications Systems Research, University of Cambridge, 10 Downing Street, Cambridge CB2 3DS, U.K. esl1@ccsr.cam.ac.uk

  • Venue:
  • Real-Time Systems
  • Year:
  • 2004

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Abstract

With the increasing use of distributed real-time systems, the ability of communication networks to handle real-time traffic is becoming more and more important. The timed token medium access control protocol, which has been now incorporated into several network standards such as FDDI and SAFENET due to its special timing property of bounded medium access time, is one of the most suitable and attractive candidate communication protocols for supporting distributed hard real-time applications. Extensive research has been conducted on using the timed token protocol to guarantee timely transmission of messages in a communication environment with hard real-time requirements. This paper intends to present a comprehensive review on recent advances in hard real-time communication with the timed token protocol. In addition, several challenging problems are identified.