Distributed Optimal Admission Controllers for Service Level Agreements in Interconnected Networks

S. Shelford, M.M. Akbar, E.G. Manning, and G.C. Shoja (Canada)


Admission Control, Distributed Multimedia, QoS.


The transmission of multimedia streams with a particular and guaranteed quality of service (QoS) is a major challenge in multimedia communications over IP networks. In this paper, we present the design and simulation results for a new distributed admission and adaptation controller for a set of interconnected networks. A new greedy admission heuristic and a hierarchical k shortest path heuristic are described which allow for online admission of multi-level Service Level Agreements (SLAs). The controllers cooperate to admit/reject new SLAs and adapt previously admitted SLAs, in order to maximize a given function (e.g., maximizing network revenue), by selecting, and guaranteeing, one of the pre defined levels of QoS for each SLA.

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