The Relation between Organized Structure and Maintaining Cost in WSN

Energy efficiency is a key problem of wireless sensor networks. Though we already have many self-organization protocols which can build energy-saving structures, the energy cost of maintenance also must be concerned. We found that organized network structure has great impact on the energy cost in the maintenance stage and the overall energy efficiency. In this paper, we classify the self-organization proposals according to the organized structures and demonstrate how the different structures will affect the energy cost used to maintain the structures when both initialization and maintenance stages are counted. Finally we concluded that a non-loop-free structure is easier to maintain and then has better energy efficiency than global tree structure.