The Research of Cross-Layer Architecture for Cognitive UACN

Underwater acoustic communication network (UACN) has been considered as one of the main technologies for underwater communication. But underwater environmental is complex, water is a worse communication medium than the air, and in limited bandwidth. Thus, it is necessary to explore higher communication and network intelligence such as cognitive radio (CR) in UACN. In this paper, a concept of environment-adaptive CR-based UACN is proposed. Furthermore, the design of cross-layer network architecture, cognitive system processing cycle and the obstacle of CR-based UACN realization are described and discussed.