Abstract: A wireless communication device includes a receiver and a transmitter. The receiver receives a plurality of first frames each including first information for generation of a trigger frame for uplink multi-user transmission. The transmitter transmits a second frame generated on the basis of the first information included in the plurality of first frames, the second frame being the trigger frame and designating at least one target terminal for the uplink multi-user transmission. Each of the first frames is transmitted by a respective one of terminals, each of which accesses a wireless medium using an access category associated with the first frame under CSMA/CA (Carrier Sense Multiple Access with Carrier Avoidance) to transmit the first frame. The second frame instructs the at least one target terminal to transmit third frames including data in a SIFS (Short Interframe Space) after the second frame is received.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first frame including first information required for uplink multi-user transmission without receiving a transmission request for the first information; and a receiver configured to receive a second frame.

Abstract: According to one embodiment, a wireless communication device includes a receiver configured to receive a plurality of first frames which are transmitted by multiplexing; and a transmitter configured to transmit a second frame containing check results indicating whether the plurality of first frames are successfully received and first information specifying at least one wireless communication device. The receiver is configured to receive a plurality of third frames transmitted by multiplexing in response to the second frame.

Abstract: A wireless communication device includes a receiver and a transmitter. The receiver receives a plurality of first frames each including first information for generation of a trigger frame for uplink multi-user transmission. The transmitter transmits a second frame generated on the basis of the first information included in the plurality of first frames, the second frame being the trigger frame and designating at least one target terminal for the uplink multi-user transmission. Each of the first frames is transmitted by a respective one of terminals, each of which accesses a wireless medium using an access category associated with the first frame under CSMA/CA (Carrier Sense Multiple Access with Carrier Avoidance) to transmit the first frame. The second frame instructs the at least one target terminal to transmit third frames including data in a SIFS (Short Interframe Space) after the second frame is received.

Abstract: According to one embodiment, a wireless communication device includes: controlling circuitry configured to set at least one of: a first transmission prohibition period for a first network to which the wireless communication device belongs; or a second transmission prohibition period for a second network, and to determine, when a first frame addressed to another device is received in a case that the first transmission prohibition period is not set and the second transmission prohibition period is set, a state of a wireless medium based on comparing a reception level of the first frame with a threshold defined corresponding to one of the first network and the second network, to which a sender of the first frame belongs.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit first information to designate a first bandwidth narrower than a maximum available bandwidth extended based on a predetermined channel, and transmit second information to designate a plurality of channels including at least one channel different from a channel used in the first bandwidth among a plurality of channels in the maximum bandwidth: and controlling circuitry configured to control the transmitter.

Abstract: According to one embodiment, a wireless communication device includes: a receiver configured to receive a first frame notifying a start of resource unit-based OFDMA (Orthogonal Frequency Division Multiple Access) communication via a first channel; and controlling circuitry configured to control, when the first frame is received, the receiver to perform standby operation at least in a first resource unit in a second channel different from the first channel, wherein the first resource unit includes one or more subcarriers among a plurality of subcarriers disposed in the second channel.

Abstract: According to one embodiment, a wireless communication device includes a receiver configured to receive from each of a plurality of other wireless communication devices first information specifying at least one communication resource requested to be allocated; and a transmitter configured to transmit second information specifying at least one communication resource allocated to each of the other wireless communication devices based on the first information. The transmitter is configured to transmit signals via the communication resources specified in the second information and the receiver is configured to receive signals via the communication resources specified in the second information.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit first information specifying at least one communication resource requested to be allocated; and a receiver configured to receive second information specifying at least one communication resource allocated depending on the first information. The transmitter is configured to transmit a signal via the allocated communication resource and the receiver is configured to receive a signal via the allocated communication resource.

Abstract: A wireless communication device includes a receiver configured to receive first information to designate a first bandwidth narrower than a maximum available bandwidth extended based on a predetermined channel, and to receive second information to designate a plurality of channels including at least one channel different from a channel in the first bandwidth among a plurality of channels in the maximum bandwidth; and controlling circuitry configured to specify a plurality of channels for use in communication based on at least the second information.

Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit first information to designate a first bandwidth narrower than a maximum available bandwidth extended based on a predetermined channel, and transmit second information to designate a plurality of channels including at least one channel different from a channel used in the first bandwidth among a plurality of channels in the maximum bandwidth: and controlling circuitry configured to control the transmitter.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first frame including information to specify a plurality of frequency components; and controlling circuitry configured to determine whether a second frame is received via each of the plurality of frequency components. The transmitter is configured to transmit a third frame including first information concerning a first value range which is used to determine whether to respond to the first frame, the first value range being dependent on a number of frequency components via which the second frame has been received.

Abstract: According to one embodiment, a wireless communication device, includes a receiver configured to receive a first field, receive at least one of a plurality of second fields having been multiplexed and transmitted, and decode the one of the second fields to obtain a frame in a case where first information identifying the wireless communication device is not set in the first field, and a controller configured to suppress access to a wireless medium during a period indicated by a value set in the frame.

Abstract: According to one embodiment, a wireless communication device includes: a receiver configured to receive a first frame notifying a start of resource unit-based OFDMA (Orthogonal Frequency Division Multiple Access) communication via a first channel; and controlling circuitry configured to control, when the first frame is received, the receiver to perform standby operation at least in a first resource unit in a second channel different from the first channel, wherein the first resource unit includes one or more subcarriers among a plurality of subcarriers disposed in the second channel.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit first information specifying at least one communication resource requested to be allocated; and a receiver configured to receive second information specifying at least one communication resource allocated depending on the first information. The transmitter is configured to transmit a signal via the allocated communication resource and the receiver is configured to receive a signal via the allocated communication resource.

Abstract: A wireless communication device includes a receiver configured to receive first information to designate a first bandwidth narrower than a maximum available bandwidth extended based on a predetermined channel, and to receive second information to designate a plurality of channels including at least one channel different from a channel in the first bandwidth among a plurality of channels in the maximum bandwidth; and controlling circuitry configured to specify a plurality of channels for use in communication based on at least the second information.

Abstract: According to one embodiment, a wireless communication device includes a transmitter configured to transmit a first frame including first information required for uplink multi-user transmission without receiving a transmission request for the first information; and a receiver configured to receive a second frame.

Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.

Abstract: A wireless communication device includes a transmitter and a receiver. The transmitter transmits a first frame containing notification information to specify first and second wireless terminals and a second frame for channel estimation. The receiver receives a third frame transmitter from the first wireless terminal and a fourth frame transmitted from the second wireless terminal. The third frame and the fourth frame are transmitted in a multiplexing scheme by the first and the second wireless terminals. The third frame contains first channel information estimated based on the second frame. The fourth frame contains second channel information estimated based on the second frame. The first frame contains at least either information to specify a preamble of the third frame and a preamble of the fourth frame or information to specify a subcarrier used for transmission of the third frame and a subcarrier used for transmission of the fourth frame.