An information processing system according to the present invention includes a plurality of information processing apparatuses connected by a multihop network, and each of the information processing apparatuses includes a first communication unit configured to transmit and receive a first packet including information about a destination address and a second communication unit configured to communicate at a frequency higher than that of the first communication unit and transmit and receive a second packet including a payload, and in each of the information processing apparatuses, when the first communication unit receives the first packet, the second communication unit is woken up, so that efficient data transfer can be achieved while the power consumption is saved.