Research on cooperation communication based-on cross-layer for underwater wireless sensor networks

With the increase of requirements for the ocean information in the world, people begin to put focus on the research on underwater wireless sensor networks. The research on underwater wireless sensor networks is studied by the layer methods in the wireless sensor networks. Although this simplifies the research, the respective layer optimization is not able to guarantee the overall networks optimization. Cross layer can make up for the limitation brought by layer. Its object is to realize the balance between the performance and the design interaction in protocol layer which is not adjacent in logicalness. The cross layer among the physical, data link and networks balances the performance and decreases the transition about the control signal. It realized the maximization of saving energy and the extension of lifetime. This is very important to the underwater wireless sensor networks. The paper combines underwater communications among underwater devices, takes use of the cross layer design, considers the physical layer, modulation and forward error correct interaction, media access control and routing interaction. Based on the research on wireless sensor networks, combined with the characteristics of physical layer, the functionalities and characteristics are considered in a comprehensive way, the cross layer design is studied thoroughly, and the cross layer link transmission algorithm and cross layer link optimization are proposed which makes the scare resource effective utilization. Simulation experiments show that cooperation communication based-on cross layer is fit for underwater wireless sensor network. The algorithm increase the efficiency and throughout. They also have good stability.