A control apparatus in a communication system including a base station and terminals, the control apparatus including: a memory, and a processor coupled the memory and configured to receive data addressed to M terminals of the terminals, and to transmit the received data to the base station, such that N terminals of the M terminals are scheduled in the same timing by the base station. An initial range is then selected and a series of data packets specific to the selected range are transmitted from a first endpoint to a second endpoint, with the second endpoint determining one or more channel metrics based on the transmitted packets. Castered wheels affixed to the base further enable freight to be moved multi-directionally, including laterally leftward or rightward. The price data can be pushed from the master ECR, local or master computers to and ECR emulation hub to an ECR emulation hub. Each of the hoops and bridges define a cell. Each of the dispensers may include an applicator brush formed or defined at an edge portion of the dispenser.