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The cycled receiver MAC protocols reduce idle listening by periodically putting nodes into sleep state. Conventional cycled receiver protocols, however, have problem such as overhearing and high latency. In this study, we propose Isochronous MAC with multi wakeup period which can reduce the power consumption due to overhearing without delay increased. To exploit this benefit, we combine it with multipath routing. Simulation results show a 12% longer system lifetime and a 87% lower delay of our proposal scheme than that of the conventional scheme.