Long-term Energy Efficiency Maximization for Heterogeneous Wireless Sensor Networks

In this paper, we study sensor-Base Station grouping management and power allocation problem for heterogeneous wireless sensor networks. We develop a stochastic optimization problem to maximize the long-term average energy efficiency. The developed optimization problem belongs to a non-convex mixed-integer program. By exploiting the fractional program, the continuity relaxation and Lagrange dual methods, the optimal solution is derived via the developed EE-based resource allocation algorithm. Simulation results validate the advantages of the proposed algorithm.