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Abstract : |
In an interactive multimedia environment that handles multiple sessions dynamically, a mechanism for controlling the QOS among sessions is very important. It is, however, difficult to achieve such QOS control without any system support. A new resourcemanagement mechanism and QOS-control architecture for multimedia applications are needed. This paper first discusses features required for such architecture, and then proposes a new QOS-control architecture based on "QOS-Ticket. " In this QOS-Ticket model, resource management and QOS control are achieved through the cooperation of an operating system, a QOS Manager, and individual continuous-media sessions. The QOS-Ticket for each session, which represents that session's resource reservation, mediates these activities. A prototype of the QOS-Ticket model has been implemented on Real-Time Mach, using the system's processor capacity reservation mechanism. An experiment with this prototype is described, to show the effectiveness of the QOS-Ticket model., |
