End-to-end delay differentiation of IP traffic aggregates using priority queuing models

• Main Author: Sousa, Pedro
• Publication Date: 2002
• Other Authors: Carvalho, Paulo, Freitas, Vasco
• Language: eng
• Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Download full: http://hdl.handle.net/1822/2991
• topic: Priority queuing models; End-to-end QoS differentiation; Quality-of-service; Scheduling; Science & Technology

This article evaluates the use of Priority Queuing (PQ) Models to achieve delay differentiation in networks operating under the Class of Services paradigm. Three PQ variants are considered: the proportional model, the additive model and a novel hybrid schema based on the upper time limit model. Through appropriate queueing and scheduling, delay differentiation is first considered for a node, and then extended to an end-to-end perspective. For each model, the corresponding delay differentiation bounds are determined and verified resorting to simulation.