Abstract: A transmitter generates a header frame having a frame length indicating the beginning of data to be transmitted, data frames having frame lengths representing the data to be transmitted, and an end frame having a frame length indicating the end of the data to be transmitted. Then, for all of the header frame, data frames and end frame, the transmitter executes transmitting the kth frame when the wireless communication space is available, thereby transmitting the header frame, data frames and end frame, one after another, in accordance with the CSMA/CA scheme.

Abstract: A wireless device (1) searches a database that stores positional information of the wireless device (1), a device (2-4) and control identifiers for controlling the devices (2-4) in an associated manner, acquires a device (2-4) located near the wireless device (1) and a control identifier for controlling the device (2-4) based on the positional information of the wireless device (1), and, based on the device (2-4) and the control identifier for controlling the device (2-4) that have been acquired, determines a controlled device (at least one of the devices (2-4)) and generates a control identifier for the controlled device. The wireless device (1) transmits, by wireless communication, the generated controlled identifier to a receiver mounted on the controlled device to control the controlled device.

Abstract: A receiver has an ID that includes three signal detection intervals (S1, S2, S3). The three signal detection intervals (S1, S2, S3) are detected as the receiver detects a signal consisting of a value larger than a threshold at each of the detection timings (DT1 to DT4). The transmitter transmits four radio frames (FR1 to FR4) such that each of the radio frames straddles the corresponding one of the detection timings (DT1 to DT4) in the receiver.

Abstract: A terminal device (1) frame-length-modulates an identifier of the radio apparatus (3) to generate a plurality of frames having a plurality of frame lengths, and transmits the generated plurality of frames to an access point (2) over wire or wireless communication. The access point (2) transfers the plurality of frames transmitted by the terminal device (1) to the radio apparatus (3) in the IP or MAC layer. The radio apparatus (3) detects the plurality of frame lengths of the plurality of frames received from the access point (2) and decodes the detected plurality of frame lengths to obtain an identifier. If the obtained identifier matches the identifier of the radio apparatus (3), the radio apparatus (3) transitions to active mode.

Abstract: A communication robot control system displays a selection input screen for supporting input of actions of a communication robot. The selection input screen displays in a user-selectable manner a list of a plurality of behaviors including not only spontaneous actions but also reactive motions (reflex behaviors) in response to behavior of a person as a communication partner, and a list of emotional expressions to be added to the behaviors. According to a user's operation, the behavior and the emotional expression to be performed by the communication robot are selected and decided. Then, reproductive motion information for interactive actions including reactive motions and emotional interactive actions, is generated based on input history of the behavior and the emotional expression.