Doughnut Effect removing Scheme in sensor networks

In sensor networks, nodes neighboring the sink node consume power very fast and then fail, compared with other nodes. Because of this, the network cannot transmit data any more. To solve this problem called “Doughnut Effect” in, this paper proposes a scheme that, after dividing the network and allocating the optimal buffer threshold in each divided network, stores data in a buffer and transmits the data when the buffer size exceeds the optimal buffer threshold so that packet overhead is reduced and Doughnut Effect can be removed. Also, we evaluate the performance of this scheme in terms of various parameters by using simulation, and show that this proposed scheme considerably improves the power efficiency in sensor networks.