651748.fig.004
Figure 4: To support short end-to-end delays, nodes with common low duty cycle (LDC) protocols wake up often, especially when the distance between sources and the sink is long; DMAC introduces the staggered schedule and lowers the duty cycle; that is, nodes wake up more rarely than in common LDC protocols to support short delays; besides, with DMAC the distance to the sink only slightly impacts the duty cycle.