An Energy Efficient Dynamic Location Server Hierarchy for Mobile Ad Hoc Networks

نویسندگان

  • Zijian Wang
  • Eyuphan Bulut
  • Boleslaw K. Szymanski
چکیده

By using position information in forwarding decisions, location based routing protocols for mobile networks are stateless and efficient. However, they are heavily dependent on location services which provide the position information of the desired destination node. Although several location service schemes have been proposed, their main goal is just to find the location of the destination node. Seldom they include energy efficiency metrics when evaluating their performance in forwarding location update and query packets. Based on the analysis of the previous related works, we propose a novel location service for mobile networks that aims at decreasing the distance traveled by the location update and query packets and, thus, at reducing the overall energy cost. The solution uses a hierarchy of mobile servers embedded into the network. As a result, the same scheme can be used for mapping logical networks with desired properties, such as hypercubes, onto to mobile ad hoc networks efficiently. A connection of this solution to the efficient query execution in the Gaian database is also discussed. Simulation results for both static and mobile wireless networks are presented to demonstrate that the new scheme achieves energy efficiency while maintaining all the other performance metrics comparable to the previously published algorithms.

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تاریخ انتشار 2010