Abstract

This paper presents a share-driven scheduling protocol for networks with real-time properties. The protocol provides fairness and bandwidth isolation among predictable as well as unpredictable streams of messages on the network. The need for this kind of scheduled real-time communication network is high in applications that have requirements on flexibility, both during development for assigning communication bandwidth to different applications, and during run-time to facilitate dynamic addition and removal of system components.The share-driven scheduling protocol is illustrated by applying it to the popular Controller Area Network (CAN). Two versions of the protocol are presented together with their associated timing analysis.

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