Abstract:

To prolong the lifetime of wireless sensor networks (WSNs), a cross-layer algorithm in terms of physical layer and network layer is proposed. Based on power control in the physical layer, the preliminary candidate sensor nodes for potential transmission are decided. Subsequently, considering the access probability of each sensor node, the per-hop transmission success probability, and the energy efficiency of end-to-end transmission links, an equilibrium routing of network layer is accomplished. Thus the end-to-end communication can be achieved in WSNs. Simulation
result show that the crosslayer strategy can prolong the system lifetime of WSNs with energy efficiency.

Key words: wireless sensor networks, cross-layer, lifetime, energy efficiency