Basic Service Set Coloring, BSS Coloring, is a procedure with which the basic services (BSS) can be assigned separately and without overlapping influences. The procedure has already been introduced in WLANs according to 802.11ah and assigns a different color
each BSS service.The aim of
thebasic service sets
isto achieve a clear distinction between the services
andto ensure that the WLAN devices access the correct BSS service. For this reason, BSS coloring gives each Basic Service Set a number, which is declared as a color. This number is added to the PHY header and the channel is assigned only when the number is recognized. After allocation, the channel is marked as busy with a special bit
. BSS Coloring is intended to speed up reuse of used services to reduce the overlapping of BSS services, Overlapping Basic Service Set (OBSS), because it reduces network performance.