The superiority of ultraviolet(UV) non-line-of-sight(NLOS) communications makes the corresponding research on media access control(MAC) protocol become more attractive.Firstly,expression of NLOS communication coverage azimuth angle was deduced according to the characteristics of UV NLOS communication.Secondly,the design rule of UV NLOS directional sending and omni-directional receiving node structure was improved on the basis of path loss characteristics and azimuth angle expression.Then,a new d...