An analysis device, preferably in the form of a floating buoy, is disclosed for the analysis of fluids, such as waste water. The method includes receiving information about a first pre-existing reward program for a first product, where the first reward program provides for a first reward, and receiving information about a second pre-existing reward program for a second product, wherein the second reward program provides a second reward. The electrically conductive layers are separated from each other by a cell gap. A loss light is directly reflected by the reflection mirror, and enlarged through a curvature of a core of the optical fiber, thereby transforming into an enlarged and bright light petal on an exterior circular surface at the other side of a spun of optical fiber. The methods include receiving uplink access signals at the relay node from the user equipment unit in a first frequency range, and transmitting uplink backhaul signals from the relay node to the base station in a second frequency range that is different from the first frequency range.