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Someone can help me about some concept in wireless sensor network

Discussion in 'Electronics Homework Help' started by chickendary, Apr 1, 2014.

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  1. chickendary

    chickendary

    1
    0
    Apr 1, 2014
    I dont understand some word about wireless sensor netowork

    workforce selection, energy-aware protocols, coronas and wedges, single hop

    in this book:

    Can u explain for me ? - let's give me some word had same mean
    thanks
     
  2. Laplace

    Laplace

    1,252
    184
    Apr 4, 2010
    This does not appear to be a book but an article published in the IEEE Computer Society Transactions. Unless one is subscribed to the Transactions, the article can be purchased for $19.

    >>ABSTRACT<<

    IEEE Transactions on COMPUTERS
    Toward Efficient Task Management in Wireless Sensor Networks
    November 2011 (vol. 60 no. 11)
    pp. 1638-1651
    Hady S. AbdelSalam, Old Dominion University, Norfolk
    Stephan Olariu, Old Dominion University, Norfolk
    DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TC.2010.264

    In numerous applications of wireless sensor networks (WSN), the reliability of the data collected by sensors is cast as specific QoS requirements expressed in terms of the minimum number of sensors needed to perform various tasks. Designing a long-lived sensor network with reliable performance has always been challenging due to the modest nonrenewable energy budget of individual sensors. In such a context, energy-unaware task management protocols may result in uneven expenditure of sensor energy by assigning uneven workloads to sensors. This, in turn, often translates into reduced sensor density around those heavily loaded sensors and may, eventually, lead to the creation of energy holes that partition the network into disconnected islands. To avoid these problems and to promote network longevity, we propose two energy-aware task management protocols: our first protocol is centralized, while the second one is fully distributed. The proposed protocols assign tasks to sensors based on their remaining energy so that energy expenditure among neighboring sensors is almost even. We compare the reliable lifetime of the network achieved by assigning tasks to sensors using the proposed protocols against optimal task assignment and also against energy-unaware protocols. Extensive simulation results have revealed that the performance of the proposed protocols is very close to that of the optimal task assignment. Furthermore, our simulation has shown that the proposed protocols can increase the functional longevity of the network by about 16 percent.
     
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