In view of energy constraint in ultraviolet communication networks

this paper designs and realizes a Medium Access Control（MAC）layer power control mechanism suitable for ultraviolet communication so as to reduce node energy consumption and inter-node interferences

extend network life cycle and increase system capacity.Simulation and experimental results indicate that this mechanism achieves power control on the platform of ultraviolet communications under the premise of ensuring the QoS of user communication and lays a solid foundation for building ultraviolet Ad hoc networks in the future.