A flexible and distributed architecture for adaptive end-to-end QoS provisioning in next-generation networks

Jie Yang, Jian Ye, Symeon Papavassiliou, Nirwan Ansari

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


In this paper, a novel distributed end-to-end quality-of-service (QoS) provisioning architecture based on the concept of decoupling the end-to-end QoS provisioning from the service provisioning at routers in the differentiated service (DiffServ) network is proposed. The main objective of this architecture is to enhance the QoS granularity and flexibility offered in the DiffServ network model and improve both the network resource utilization and user benefits. The proposed architecture consists of a new endpoint admission control referred to as explicit endpoint admission control at the user side, the service vector which allows a data flow to choose different services at different routers along its data path, and a packet marking architecture and algorithm at the router side. The achievable performance of the proposed approach is studied, and the corresponding results demonstrate that the proposed mechanism can have better service differentiation capability and lower request dropping probability than the integrated service over DiffServ schemes. Furthermore, it is shown that it preserves a friendly networking environment for conventional transmission control protocol flows and maintains the simplicity feature of the DiffServ network model.

Original languageEnglish (US)
Pages (from-to)321-333
Number of pages13
JournalIEEE Journal on Selected Areas in Communications
Issue number2
StatePublished - Feb 2005

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • End-to-end performance
  • Quality-of-service (QoS)
  • Service granularity
  • Service provisioning


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