1. Method for directing communication traffic to and from a communication unit within an application control system, wherein the application control system comprises a plurality of application control components, the application control components being capable of transmitting data to the communication unit using light waves, the method comprising:determining the positions of the application control components within the application control system;
determining respective first and second position information of a first communication unit within the application control system at subsequent instants;
computing an area of interest for the first communication unit based on changes between at least the first and second position information;
identifying a first subgroup of one or more application control components from the plurality of application control components located within the area of interest of the first communication unit; and
programming data paths through the application control system to communicate data with the communication unit using the identified subgroup of application control components.