A Process Group Membership Service for Active Safety Systems Using TT/ET Communication Scheduling
Paper in proceeding, 2007

This paper describes a process group membership protocol for distributed real-time systems, that use a communication network which supports both timetriggered (TT) and event-triggered (ET) communication. The protocol allows a group of cooperating real-time processes to establish a consistent view of each other's operational status, i.e. working correctly or not. The aim is to provide an application independent membership service in systems where several distributed real-time tasks share processing nodes. We assume that each such task consists of several processes executing on different nodes and that each node can execute processes belonging to different tasks. The protocol is applicable to any application domain, but has been developed for automotive active safety systems. Here, typical distributed real-time tasks include anti-lock braking, stability control and collision mitigation. In such systems, a membership service provides invaluable support for implementing fault-tolerance and graceful degradation.

safety critical systems

fault tolerance

time-triggered systems

group mebership protocols


Carl Bergenhem

Johan Karlsson

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Proceedings of PRDC 2007 IEEE 13th Pacific Rim International Symposium on Dependable Computing, Dec 17-19, 2007, Melbourne, Australia

0-7695-3054-0 (ISBN)

Subject Categories

Computer Engineering

Software Engineering

Information Science



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