Table 5.

Energy consumption of Frame Slotted ALOHA (FSA) and Distributed Queuing (DQ). The FSA/DQ quotient represents the energy savings of using FSA with respect to DQ. In this case, using the optimal FSA leads to a reduction in energy consumption between 5% to 45% compared to DQ.

	Number of Nodes
Protocol	5	10	15	20	25
FSA	0.658 mJ	0.726 mJ	0.795 mJ	0.863 mJ	0.932 mJ
DQ	0.689 mJ	0.992 mJ	1.245 mJ	1.481 mJ	1.686 mJ
FSA/DQ	95.5%	73.2%	63.8%	58.3%	55.3%