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Optimum hello interval for a connected homogeneous topology in mobile wireless sensor networks

Nayebi, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1007/s11235-011-9567-4
  3. Publisher: 2013
  4. Abstract:
  5. Topology of a mobile wireless sensor/ad hoc network is prone to link breakages due to node mobility which compels the periodic re-construction of the topology in so called "hello" intervals. The problem addressed in this paper is determining the maximum "hello" interval preserving the connectivity of a homogeneous topology with high probability. In order to study the optimum "hello" interval, statistical topology lifetime (STL) is formally defined as a value of "hello" interval that ensures statistical connectivity with a given threshold. Temporal properties of the topology are studied based on two phenomena; one concerning a connectivity phase transition with time and the other one concerning the average degree of the logical communication graph at time of starting the phase transition defined as disconnection degree. Finally, an estimation method for STL is proposed and based on the method the STL of several scenarios is estimated. The results are compared to the results of extensive simulations, which confirms the accuracy of the proposed method. In addition, the phase transition in connectivity is verified with considering shadowing effect in radio signal propagation
  6. Keywords:
  7. Extensive simulations ; Connectivity ; Mobility ; Topology ; Wireless mobile network ; Communication graphs ; Estimation methods ; Hello-interval ; Mobile wireless sensor network ; Radio signal propagation ; Wireless mobile networks ; Carrier mobility ; Telecommunication networks ; Wireless sensor networks
  8. Source: Telecommunication Systems ; Volume 52, Issue 4 , 2013 , Pages 2475-2488 ; 10184864 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs11235-011-9567-4