Guaranteed QoS Synthesis for Admission Control with Shared Capacity

Guaranteed QoS Synthesis (GQS) is a distributed mea sur ment-based admission control scheme. It is designed as a simple and scalable app roach to providing strong service guarantees using bulk packet congestion marking across a core network region. We describe the operation and performance of GQS, with particular reference t o its use for fair resource-sharing between guaranteed traffic and a rate-responsive non-guaran teed class. This analysis includes a detailed simulation study which fully represents the interac tions between events at packet and session timescales. Results confirm that GQS provides stron g guarantees under normal conditions, is robust to different traffic configurations, and rea dily recovers from network failure events.

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