A middleware for service adaptation in differentiated 802.11 wireless networks

Chui Sian Ong, Yuan Xue, Klara Nahrstedt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Currently there is a growing interest to support Quality of Service(QoS) for multimedia application delivery over bandwidth limited and varying wireless network. Existing work either only focus at network level QoS via MAC scheduling or provide application level QoS via per-application admission control. Due to the lack of application information, the former may not meet the specific QoS requirements of different applications, while the latter results in poor scalability. In light of the limitations of existing approaches, we present a novel QoS architecture, which incorporates a two-level design. At the network level, the cross-layer scheduling and queue management provide service differentiation for wireless network. At the middleware level, a monitor maintains a global view of the application performance over the whole network, and an adaptor coordinates service adaptation to achieve the required QoS for multimedia applications. In this paper, we present the whole QoS architecture, with a focus on the middleware design, which adopts a control-based adaptation model. To validate our design, applications with different QoS requirements are built on top of the middleware. Experimental results show that, the specific QoS levels for multimedia applications can be successfully achieved in IEEE 802.11-based wireless environment.

Original languageEnglish (US)
Title of host publicationProceedings - 2004 12th IEEE International Conference on Networks, ICON 2004
EditorsH.-K. Pung, F.B.-S. Lee, C.-K. Tham, S. Kuttan
Pages364-368
Number of pages5
DOIs
StatePublished - Dec 1 2004
Event2004 12th IEEE International Conference on Networks, ICON 2004 - Unity in Diversity - , Singapore
Duration: Nov 16 2004Nov 19 2004

Publication series

NameProceedings - IEEE International Conference on Networks, ICON
Volume1
ISSN (Print)1531-2216

Other

Other2004 12th IEEE International Conference on Networks, ICON 2004 - Unity in Diversity
CountrySingapore
Period11/16/0411/19/04

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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