Kabushiki Kaisha Toshiba

International Semiconductor Group

Canon Kabushiki Kaisha

Toshiba Electronic Devices & Storage Corporation

Other

Samsung Electronics Co., Ltd.

Tomoko Adachi

Ryoko Matsuo

Tomoya Tandai

Kiyoshi Toshimitsu

Tetsu Nakajima

Yoriko Utsunomiya

Masahiro Takagi

Toshihisa Nabetani

Yasuyuki Nishibayashi

Tatsuma Hirano

Takeshi Tomizawa

Tsuguhide Aoki

Hideo Kasami

Masahiro Sekiya

Koji Akita

Kentaro Taniguchi

Seiichiro Horikawa

Kazumi Sato

Hiroki Mori

Daisuke Takeda

Koichiro Ban

Shuichi Obayashi

Ren Sakata

Hiroki Shoki

Minoru Namekata

Mutsumu Serizawa

Kuniaki Ito

Hiroshi Tsurumi

Koji Horisaki

Syuichi Sekine

Fumio Mikami

Yasuhiro Hosoda

Yukimasa Sato

Kyohei Takeda

Daisuke Taki

Tomoya Suzuki

Hiroki Matsushima

Masaaki Ikuta

Tsuyoshi Kogawa

Katsuya Nonin

Satoshi Kaburaki

Koji Ogura

Takafumi Sakamoto

Daisuke Uchida

Kensuke Nakanishi

Narendar Madhavan

Toshiya Mitomo

Miyuki Ogura

Katsuya Nounin

According to one embodiment, when a control unit is notified of information in at least one second signal received by one of first and second wireless communication units after the control unit provides the second wireless communication unit with a command to transmit a first signal containing first address information and before a waiting time elapses and when the at least one second signal contains second address information assigned to an authentication apparatus having received the first signal, then the control unit provides the first wireless communication unit with a command to transmit a third signal for a connection request with the second address information set in a destination address.

Wireless communication apparatus, authentication apparatus, wireless communication method and authentication method

A wireless communication device notifies another wireless communication device that one of a first frequency and a second frequency is set as a primary frequency, connects to the another wireless communication device at the first frequency and the second frequency, and in a case receiving information identifying that the another wireless communication device has a restriction on transmission and reception between the second frequency and the first frequency, obtains an access right of a frame addressed to the another wireless communication device at a secondary frequency other than the primary frequency from among the first frequency and the second frequency.

Wireless communication device and wireless communication method

According to one embodiment, a wireless communication device, includes: a receiver configured to receive a first frame a transmitter address of which is an address of a first wireless communication device and a receiver address of which is an address of the wireless communication device; and a transmitter configured to transmit a second frame generated using a first address process in response to receipt of the first frame. The first address process is a process to set a first value in a first region in a receiver address field of the second frame. The first value is a value different from values settable in first regions in addresses of the first wireless communication device and another wireless communication device capable of receiving the second frame.

Wireless communication device

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.

According to one embodiment, a wireless communication device includes: controlling circuitry configured to change a value of a first parameter in accordance with a history of uplink multi-user transmission or whether capability of uplink multi-user transmission is in an enabled or disabled state, the first parameter defining an upper limit of duration during which a wireless medium is allowed to be occupied; and a transmitter configured to transmit a first frame.

Wireless communication device and wireless communication method including history of uplink multi-user transmission

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.

Wireless communication device, wireless communication terminal and wireless communication method

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.

Wireless communication device and wireless communication method for providing opportunity of fair transmission to terminals

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.

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.

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.

According to one embodiment, a wireless communication device includes: a receiver that configured to receives a first frame; and a transmitter that configured to transmits a second frame including a first identifier and acknowledgement information on the first frame, the first identifier being extracted from a predetermined field of the first frame and being different from a source address of the first frame.

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.

According to one embodiment, a wireless communication device notifies another wireless communication device that any one of a first frequency and a second frequency is set as a primary frequency, connects to the other wireless communication device at the first frequency and the second frequency, and in a case receiving information identifying that the other wireless communication device has a restriction on transmission and reception between the second frequency and the first frequency, obtains an access right of a frame addressed to the other wireless communication device at a secondary frequency other than the primary frequency out of the first frequency and the second frequency.

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.

Growing community of inventors

Kawasaki, Japan

Tomoko Adachi