On Supporting Mision-Critical Multimedia Applications

Mission-critical multimedia applications such m advanced command and control are dynamic and criticality driven. Taking into consideration of the application criticality as well as media quality-ofsewice (QoS} ar$ timing requirements, we develop a multiresource management system that enables criticality-based resource preemption and QoS-based dynamic resource negotiation and adaptation. Our peeomuznce study indicates that our approximation solution is near optimal ana! that it outpe$orms a criticality-cognitive baseline algorithm. We also show that the dynamic QoS adjustment technique largely improves the quality of service for video streams. The criticalityand QoS-based multiresource management system is part of the Presto multimedia system environment prototyped at Honeywell for mission-critical applications.