Fair intelligent admission control over resource-feedback DiffServ network

Authors:
Ming Li;Doan B. Hoang;Andrew J. Simmonds
Affiliations:
Faculty of Information Technology, University of Technology, Sydney, NSW, Australia;Faculty of Information Technology, University of Technology, Sydney, NSW, Australia;Faculty of Information Technology, University of Technology, Sydney, NSW, Australia
Venue:
Computer Communications
Year:
2005

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Abstract

The basic DiffServ model lacks mechanisms to prevent itself from being overloaded and to inform its internal capability to the external world. This paper addresses the problem by presenting a Fair Intelligent Admission Control (FIAC) over an enhanced-DiffServ architecture. The central idea is to make admission decision based on both informed internal network QoS states and the external traffic QoS requirements at the edge node. This model has several advantages: (1) it is backward compatible with DiffServ, (2) it adapts to traffic load and network QoS state changes, and (3) it provides interactive communication between the external QoS requirements and the internal DiffServ network capability. In this paper, we use simulation to evaluate the performance of DiffServ with or without FIAC. The performance demonstrates that the new scheme is able to admit traffic fairly and achieve edge-to-edge QoS under heavy traffic conditions and network state changes.