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      OLSR-aware channel access scheduling in wireless mesh networks

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      Author
      Kas, M.
      Korpeoglu, I.
      Karasan, E.
      Date
      2011
      Source Title
      Journal of Parallel and Distributed Computing
      Print ISSN
      0743-7315
      Publisher
      Academic Press
      Volume
      71
      Issue
      9
      Pages
      1225 - 1235
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Wireless mesh networks (WMNs) have emerged as a key technology having various advantages, especially in providing cost-effective coverage and connectivity solutions in both rural and urban areas. WMNs are typically deployed as backbone networks, usually employing spatial TDMA (STDMA)-based access schemes which are suitable for the high traffic demands of WMNs. This paper aims to achieve higher utilization of the network capacity and thereby aims to increase the application layer throughput of STDMA-based WMNs. The central idea is to use optimized link state routing (OLSR)-specific routing layer information in link layer channel access schedule formation. This paper proposes two STDMA-based channel access scheduling schemes (one distributed, one centralized) that exploit OLSR-specific information to improve the application layer throughput without introducing any additional messaging overhead. To justify the contribution of using OLSR-specific information to the throughput, the proposed schemes are compared against one another and against their non-OLSR-aware versions via extensive ns-2 simulations. Our simulation results verify that utilizing OLSR-specific information significantly improves the overall network performance both in distributed and in centralized schemes. The simulation results further show that OLSR-aware scheduling algorithms attain higher end-to-end throughput although their non-OLSR-aware counterparts achieve higher concurrency in slot allocations. © 2010 Elsevier Inc. All rights reserved.
      Keywords
      Centralized channel access scheduling
      Cross - layer design
      Distributed channel access scheduling
      MAC
      OLSR
      Spatial TDMA
      Permalink
      http://hdl.handle.net/11693/21785
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.jpdc.20http://dx.doi.org/10.11.013
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      • Department of Computer Engineering 1411
      • Department of Electrical and Electronics Engineering 3601
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