Multihop wireless networks with infrastructure support (MWNIs): extending the coverage of WLANs with multihop networks

  • Authors:
  • Kin Choong Yow;Huiqing Wang

  • Affiliations:
  • Nanyang Technological University, Singapore;Nanyang Technological University, Singapore

  • Venue:
  • ICAIT '08 Proceedings of the 2008 International Conference on Advanced Infocomm Technology
  • Year:
  • 2008

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Abstract

We consider a multihop wireless network with infrastructure support (MWNI) that can be constructed from an existing IEEE 802.11 based WLANs with multihop extension. Assuming that only a singe network interface card operating on a single channel MAC is equipped in each mobile host, we identify the characteristics of such a network and the challenges in designing a routing algorithm to maximally utilize all the available channels. A new load metric is first proposed that considers possible spatial reuse, and a QoS-aware routing protocol is then proposed to enhance the QoS for the admitted traffic. Through simulation evaluation, a routing algorithm with such considerations is shown to be able to achieve more stable performance comparing with existing routing algorithms in MWNIs, while fully utilizing available resources.