A Multi-Ring Transmission Strategy for Ultraviolet Communication Networks

Due to strong attenuation in the ultra-violet spectrum, multi-hop transmission is needed to extend the communication range. In this work, we propose a multi-ring transmission strategy based on time division. By minimizing the transmission delay of each node, the relationship between the number of rings and the total number of nodes is obtained, based on which the slot allocation parameters are optimized. The system throughput is evaluated numerically. In comparison with ideal carrier sense multiple access with collision avoid (CSMA/CA) protocol, the proposed protocol shows higher throughputs.