Fig. 6
From: A dynamic handover scheme based on bidirectional VLC channel in multi-user attocell networks
a Indoor distribution of analyzed APs and b probability distribution of handover. Figure b illustrates the probability distribution of handover where indoor distribution of access points in a. The warmer the color, the higher the handover probability in b. Different colors are just to visually distinguish well the coverage area of each access point and have no other meaning in a