Dynamic Establishment and Termination of Real-Time Message Streams in Dual-Bus Networks

Authors:
Ching-Chih Han;Chao-Ju Hou;Kar Sun Tsoi;Sean Ho
Affiliations:
Creosys Inc., Gremont, CA;Ohio State Univ., Columbus;Ohio State Univ., Columbus;Information and Technology Directorate, Adelphi, MD
Venue:
IEEE Transactions on Computers
Year:
2000

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Abstract

Several medium access control (MAC) schemes have been developed for dual-bus networks such as DQDB [8], Fasnet [10], CRMA [12], and Simple [9]. However, how to guarantee the timely delivery of isochronous (real-time) messages with hard deadline constraints is one of the open issues yet to be solved. In [5], we laid a formal basis for allocating prearbitrated slots to isochronous message streams in dual-bus networks and devised a slot allocation scheme to statically establish a set of isochronous message streams at system initialization. In this paper, we complement our work in [5] and propose, with the necessary theoretical base established, a dynamic message stream setup and tear-down scheme for dual-bus networks. The resulting channel establishment and termination procedures are simple and can be easily implemented in dual-bus networks.