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    A QoS-based broadcast protocol under blind information for multihop cognitive radio ad hoc networks

    Date
    2014-03
    Author
    Song, Yi
    Xie, Jiang
    Metadata
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    Citation
    Song, Yi; Xie, Jiang. 2014. A QoS-based broadcast protocol under blind information for multihop cognitive radio ad hoc networks. IEEE Transactions on Vehicular Technology, vol. 63:no. 3:ppg. 1453-1466
    Abstract
    Broadcasting is an important operation in wireless networks where control information is usually propagated as broadcasts for the realization of most networking protocols. In traditional ad hoc networks, broadcasts are conducted on a common channel, which is shared by all nodes in the network. However, in cognitive radio (CR) ad hoc networks, unlicensed users may observe heterogeneous spectrum availability, which is unknown to other unlicensed users before the control information was broadcast. Thus, it is extremely challenging that broadcasts can be successfully conducted without knowing the spectrum availability information in advance. In addition, since broadcast collisions (i.e., simultaneous reception of broadcast messages at the same node) often lead to the waste of network resources, they should be efficiently mitigated in multihop scenarios. In this paper, a quality-of-service (QoS)-based broadcast protocol under Blind Information for multihop CR ad hoc networks, i.e., QB(2)IC, is proposed with the aim of having a high success rate and short broadcast delay. In our design, we do not assume that unlicensed users are aware of the network topology, the spectrum availability information, and time synchronization information. To the best of our knowledge, this is the first paper that investigates the broadcast issue in multihop CR ad hoc networks under blind information. Simulation results show that our proposed QB(2)IC protocol outperforms other broadcast schemes in terms of a higher success rate and shorter average broadcast delay.
    Description
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    URI
    http://dx.doi.org/10.1109/TVT.2013.2284782
    http://hdl.handle.net/10057/10583
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