Alternatively, in case of the information processing device 100 constituting a slave station, for example, predicted reception power of a desired packet and a sleep determination power threshold may be acquired at the time of reception of a beacon from a master station. Alternatively, for example, predicted reception power of a desired packet and a sleep determination power threshold may be acquired after an elapse of a predetermined period, or at the time of reception of a predetermined number of packets.

Alternatively, in case of the information processing device 100 constituted by a cellular phone, for example, predicted reception power of a desired packet and a sleep determination power threshold may be acquired at the time of detection of movement of the information processing device 100. Note that the movement of the information processing device 100 (movement of position of information processing device 100) is detectable on the basis of a sensor for detecting a condition of the information processing device 100 (e.g. built-in sensor of information processing device 100). For example, this sensor may be constituted by a gyro sensor, an acceleration sensor, a global positioning system (GPS) sensor, or other sensors. Alternatively, for example, predicted reception power of a desired packet and a sleep determination power threshold may be acquired at the time of detection of movement of a communication partner device of the information processing device 100. In this case, the movement of the communication partner device is detectable by the information processing device 100 with reference to notification from the communication partner device (e.g. exchange of signal including information indicating movement).