A practical approach for providing QoS in multichannel ad-hoc networks using spectrum width adaptation

Vijay Raman, Matthew C. Caesar

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

Abstract

Multichannel wireless networks provide the flexibility to utilize the available spectrum efficiently for achieving improved system performance in terms of throughput and spectral efficiency. However, there has been no practical means for provisioning quality of service (QoS) in multichannel wireless networks. While previous proposals providing signaling and adaptation mechanisms for QoS, they support only fixed-width channels, restricting system performance in networks supporting variable-width channels. In this paper, we propose a distributed mechanism for provisioning QoS by adapting the channel widths in a multichannel, ad-hoc network. Our algorithm builds upon the well-known ETT routing metric to incorporate bandwidth adaptability. We also propose mechanisms for performing admission control and congestion control jointly in a multihop setting. We demonstrate the performance of our algorithm using a modified AODV routing protocol through extensive simulations. Our simulations results show that our proposed approach can achieve up to twice the spectral efficiency and data rates when compared to the greedy approach. Furthermore, our results show that our proposed approach scales well as the network density increases.

Original languageEnglish (US)
Title of host publicationGLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference
DOIs
StatePublished - 2009
Event2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States
Duration: Nov 30 2009Dec 4 2009

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Other

Other2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
CountryUnited States
CityHonolulu, HI
Period11/30/0912/4/09

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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