A new energy-efficient transmission scheme based ant colony algorithm for wireless sensor networks

Traditional wireless sensor networks (WSNs) are supplied by energy-constrained batteries. The battery of sensor node is very difficult to be replaced, once the node is deployed in the inspection area. So we need to design energy-efficient transmission strategy to save energy consumption. In this paper, we improve the performance of cooperative LEACH transmission scheme firstly. Then based on this improvement and ant colony algorithm-MIMO(ACAMIMO), a new transmission scheme has been put forward to perform energy-efficient transmission. Specifically, the proposed algorithm improve the process of clustering and the way of cooperative node selection. Moreover, a heuristic ant colony algorithm which uses the distance and the residual energy of the adjacent nodes to build a heuristic factor is proposed. It can search for optimal multi-hop transmission path for inter-cluster transmission. Analysis and simulation results show that proposed ACAMIMO algorithm can reduce energy consumption, balance load consumption and prolong lifetime of network effectively compared to a single-hop transmission.