Augmented Reliable Multicast CORBA Event Service (ARMS): A QoS-Adaptive Middleware

Authors:
João Orvalho;Fernando Boavida
Affiliations:
-;-
Venue:
IDMS '00 Proceedings of the 7th International Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services
Year:
2000

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Abstract

The CORBA Event Service specification lacks important features in terms of quality of service (QoS) characteristics required by multimedia information. The main objective of the work described in this paper is to augment the standard CORBA Event Service specification with a set of extensions, to turn it into an adaptable QoS middleware multimedia framework. To meet this, some extensions to the CORBA Event Service already developed with the aim of providing multicasting and reliability features have been enhanced in order to allow the close interaction with multicast transport protocols and with QoS monitoring mechanisms. The result was a QoS-aware middleware platform that actively adapts the quality of service required by the applications to the one that is provided by the underlying communication channel. The main quality of service features addressed by the platform - and discussed in the paper - are the support of sessions with different reliability levels, the provision of congestion control mechanisms and the capability to suppress jitter.