Quality of Service in Indirect Communication Systems

F. Araújo and L. Rodrigues

Selected sections of this report were presented at the Ersads 2001, European Research Seminar on Advances in Distributed Systems, 14-18 May 2001, Bertinoro (Forlė), Italy.


This paper outlines an architecture that intends to ensure Quality of Service (QoS) to applications using the publisher-subscriber paradigm. The key idea is to subscribe information not only by subject and content but also according to QoS parameters. This must be done with cooperation of all intervenients: publishers, which should tag information they are producing with application-level QoS parameters; subscribers, that do content-based QoS addressing; and message brokers, which use a QoS based network infrastructure.

Also available extended report (gzip postscript), (pdf) .

Luís Rodrigues