An end-to-end QoS framework with on-demand bandwidth reconfiguration

Mei Yang, Yan Huang, Jaime Kim, Meejeong Lee, Tatsuya Suda, Matsubara Daisuke

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


This paper proposes a new QoS framework, called the On-Demand QoS Path framework (ODP). It provides end-to-end QoS guarantees to individual flows with minimal overhead, while keeping the scalability characteristic of DiffServ. ODP exercises per-flow admission control and end-to-end bandwidth reservation at the edge of the network and only differentiates service types in the core of the network. In addition, to adapt to dynamically changing traffic load, ODP monitors the bandwidth utilization of the network and performs dynamic bandwidth reconfiguration in the network core based on the monitored bandwidth utilization. Through extensive simulations, the performance of ODP is investigated and compared with that of IntServ and DiffServ frameworks. The simulation results clearly showed that ODP provides end-to-end QoS guarantees to individual flows, which DiffServ can not provide, with much less overhead than IntServ.

Original languageEnglish
Pages (from-to)2034-2046
Number of pages13
JournalComputer Communications
Issue number18
StatePublished - 1 Nov 2005

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation through grants ANI-0083074 and ANI-9903427, by DARPA through Grant MDA972-99-1-0007, by AFOSR through Grant MURI F49620-00-1-0330, by Basic Research Program of KOSEF through grant R04-2000-000-00078-0 and by grants from the University of California MICRO and CoRe Programs, Hitachi, Hitachi America, Novell, Nippon Telegraph and Telephone Corporation (NTT), NTT Docomo, Fujitsu, and NS-Solutions.


  • Admission control
  • Bandwidth management
  • DiffServ
  • End-to-End QoS
  • IntServ over DiffServ


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