We introduce a methodology for establishing a connection between two arbitrary nodes of a ulticlass broadband network that secures sufficient resources at every intermediate node along the selected route, and thereby guarantees quality of service (QOS). We describe how a Virtual Path (VP)mechanism may be implemented within our framework, and compare the performance achieved by such a scheme with that of a Virtual Circuit (VC) approach. The notion of contract region is introduced as a mean of achieving coordination among distributed Virtual Path controllers to ensure that the state of each network link remains within its schedulable region and the cell level QOS is guaranteed.
展开▼
