Abstract: A wireless communication device transmits data to multiple wireless terminals at the same timing. The wireless communication device includes a complement calculation part configured to calculate the amount of complement for transmission data for each wireless terminal among multiple wireless terminals on multiple subcarriers distributed and assigned thereto, a complementation part configured to complement transmission data using the amount of complement calculated for each wireless terminal, and a transmitter configured to transmit the complemented transmission data to multiple wireless terminals via multiple subcarriers. The wireless communication device further includes a frame generator configured to generate frames (e.g. OFDMA frames) used to multiplex and transmit the complemented transmission data to multiple wireless terminals. The complement calculation part calculates the amount of complement based on the number of available subcarriers, which is determined via carrier sensing.

Abstract: A system, a program and a method allow a wireless terminal to discover an objective access point with a comparatively small amount of consumption energy and in a comparatively short waiting time. The access point (AP) includes: an AP WLAN communicator communicating using a predetermined available channel of a first frequency band; a pointer signal generator generating a pointer signal including available-channel information in the first frequency band and a network identifier; and an AP pointer signal communicator using a specific channel of a second frequency band to send the pointer signal to the wireless terminal. While, the wireless terminal receives the pointer signal through the specific channel and controls, in response to the available channel information and network identifier included in the pointer signal, for waiting for receiving a beacon or a probe response transmitted in the first frequency band from the objective access point.

Abstract: In a wireless communication system, a transmitting device sequentially transmits multiple directional beams each having different directivity to a receiving device via each of multiple directional antennas, thus setting directivity for each directional beam to be transmitted to the receiving device according to a response signal to multiple directional beams. The receiving device sequentially receives multiple directional beams and thereby selects a directional beam having a high reception strength among multiple directional beams, thus notifying the transmitting device of information to identify the selected directional beam.

Abstract: A transmitting device includes a data transmitting limit configured to wirelessly transmit a frame including a payload part in which data destined for a plurality of receiving devices is frequency-division multiplexed and a header including a signal field part storing division information about frequency division of the pay load part.

Abstract: A system, a program and a method allow a wireless terminal to discover an objective access point with a comparatively small amount of consumption energy and in a comparatively short waiting time. The access point (AP) includes: an AP WLAN communicator communicating using a predetermined available channel of a first frequency band; a pointer signal generator generating a pointer signal including available-channel information in the first frequency band and a network identifier; and an AP pointer signal communicator using a specific channel of a second frequency band to send the pointer signal to the wireless terminal. While, the wireless terminal receives the pointer signal through the specific channel and controls, in response to the available channel information and network identifier included in the pointer signal, for waiting for receiving a beacon or a probe response transmitted in the first frequency band from the objective access point.

Abstract: A wireless communication device transmits data to multiple wireless terminals at the same timing. The wireless communication device includes a complement calculation part configured to calculate the amount of complement for transmission data for each wireless terminal among multiple wireless terminals on multiple subcarriers distributed and assigned thereto, a complementation part configured to complement transmission data using the amount of complement calculated for each wireless terminal, and a transmitter configured to transmit the complemented transmission data to multiple wireless terminals via multiple subcarriers. The wireless communication device further includes a frame generator configured to generate frames (e.g. OFDMA frames) used to multiplex and transmit the complemented transmission data to multiple wireless terminals. The complement calculation part calculates the amount of complement based on the number of available subcarriers, which is determined via carrier sensing.

Abstract: A system, a program and a method allow a wireless terminal to discover an objective access point with a comparatively small amount of consumption energy and in a comparatively short waiting time. The access point (AP) includes: an AP WLAN communicator communicating using a predetermined available channel of a first frequency band; a pointer signal generator generating a pointer signal including available-channel information in the first frequency band and a network identifier; and an AP pointer signal communicator using a specific channel of a second frequency band to send the pointer signal to the wireless terminal. While, the wireless terminal receives the pointer signal through the specific channel and controls, in response to the available channel information and network identifier included in the pointer signal, for waiting for receiving a beacon or a probe response transmitted in the first frequency band from the objective access point.

Abstract: A system, a program and a method allow a wireless terminal to discover an objective access point with a comparatively small amount of consumption energy and in a comparatively short waiting time. The access point (AP) includes: an AP WLAN communicator communicating using a predetermined available channel of a first frequency band; a pointer signal generator generating a pointer signal including available-channel information in the first frequency band and a network identifier; and an AP pointer signal communicator using a specific channel of a second frequency band to send the pointer signal to the wireless terminal. While, the wireless terminal receives the pointer signal through the specific channel and controls, in response to the available channel information and network identifier included in the pointer signal, for waiting for receiving a beacon or a probe response transmitted in the first frequency band from the objective access point.