Automatic damaged-function alternation among wireless sensor nodes

We propose a distributed algorithm for function alternations, which enables sensor nodes to take over the damaged functions of their neighboring sensor nodes dynamically in a wireless sensor network. In this paper, after introducing the concept of the function alternation, the algorithm is explained in detail with some evaluation results. Comparing the results obtained using the proposed algorithm with those obtained using non-function alternation methods shows that the proposed algorithm makes the initial functionality of each sensor function sustainable even if some sensor nodes are damaged.