Cross-Layer Lifetime Maximization with Data Aggregation in Wireless Sensor Networks

In this paper, a joint routing, data aggregation, and power control algorithm is proposed for lifetime maximization of energy-constrained wireless sensor networks. By analyzing network data aggregation traffic, power consumption, and link capacity, the problem is formulated as a non-convex and non-separable programming problem, which is converted into an equivalent convex programming problem. The problem is solved by decomposing the model into two independent convex optimization problems. The optimal transmission power and the rate for data aggregation are obtained via the subgradient. The simulation results show that the cross-layer design algorithm proposed in the paper can reduce data traffic, balance energy consumption, and prolong the network lifetime effectively.