Efficient recovery algorithms for wireless mesh networks with cognitive radios

Roberto Hincapie, Li Zhang, Jian Tang, Guoliang Xue, Richard S. Wolff, Roberto Bustamante

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    10 Scopus citations

    Abstract

    Cognitive radios allow unlicensed wireless users to access channels that are in the licensed spectrum bands. However, in a wireless network with cognitive radios, when a licensed user becomes active on a channel in a certain area, nodes and links that were using that channel must release it, which will cause traffic failures. Simple and effective recovery schemes are needed to re-allocate available resources for the failed traffic. In this paper, we study the failure recovery in wireless mesh networks with cognitive radios. We formally formulate the corresponding problems as integer linear programming problems. By solving them, we can obtain optimal solutions. Moreover, an efficient distributed heuristic algorithm is presented for fast recovery. Simulation results show that the performance given by our distributed algorithm is close to that of the optimal solutions.

    Original languageEnglish
    Title of host publicationProceedings - 2009 IEEE International Conference on Communications, ICC 2009
    DOIs
    StatePublished - 2009
    Event2009 IEEE International Conference on Communications, ICC 2009 - Dresden, Germany
    Duration: 14 Jun 200918 Jun 2009

    Publication series

    NameIEEE International Conference on Communications
    ISSN (Print)0536-1486

    Conference

    Conference2009 IEEE International Conference on Communications, ICC 2009
    Country/TerritoryGermany
    CityDresden
    Period14/06/0918/06/09

    Keywords

    • Cognitive radio
    • Mathematical programming
    • Recovery
    • Wireless mesh network

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