Patents by Inventor Yoriko Utsunomiya
Yoriko Utsunomiya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8503339Abstract: A wireless communication apparatus performs bi-directional communication with an initiator. The apparatus is allocated an allocation period for data transmission from the initiator. The apparatus includes means for generating a first physical frame including an acknowledgement frame with respect to data received from the initiator, and generating a second physical frame in which a plurality of transmission data frames addressed to the initiator are aggregated. The apparatus also includes means for transmitting the first physical frame at a first transmission rate and the second physical frame at a second transmission rate, during the allocation period.Type: GrantFiled: November 19, 2010Date of Patent: August 6, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tetsu Nakajima, Tomoko Adachi, Masahiro Takagi, Tomoya Tandai, Yoriko Utsunomiya, Toshihisa Nabetani
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Patent number: 8472468Abstract: A physical frame is constructed, the physical frame including a medium access control super-frame payload which in turn includes a plurality of medium access control frames. With respect to the constructed physical frame, virtual carrier sense information is set in the plurality of medium access control frame so that a result of carrier sense is identical to another by virtual carrier sense based on the plurality of medium access control frames in the medium access control super-frame payload. The physical frame in which the virtual carrier sense information has been set is transmitted to a destined communication apparatus.Type: GrantFiled: May 26, 2010Date of Patent: June 25, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Takagi, Yasuyuki Nishibayashi, Yoriko Utsunomiya
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Patent number: 8406214Abstract: A physical frame is constructed, the physical frame including a medium access control super-frame payload which in turn includes a plurality of medium access control frames. With respect to the constructed physical frame, virtual carrier sense information is set in the plurality of medium access control frame so that a result of carrier sense is identical to another by virtual carrier sense based on the plurality of medium access control frames in the medium access control super-frame payload. The physical frame in which the virtual carrier sense information has been set is transmitted to a destined communication apparatus.Type: GrantFiled: November 5, 2009Date of Patent: March 26, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Takagi, Yasuyuki Nishibayashi, Yoriko Utsunomiya
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Patent number: 8379545Abstract: A method for exchanging channel information between a transmitter and a receiver each including antennas. A request frame including a first preamble, second preamble, and channel information feedback request is transmitted to the receiver, wherein the first preamble is transmitted from one of the antennas of the transmitter, the second preamble is transmitted from each of the antennas, and the channel information feedback request is transmitted from the one of the antennas. The request frame is received at the receiver, and the channel information feedback request is detected by a decoding based on the first preamble. Channel information is estimated using the second preamble, and a notification frame including the estimated information is constructed and transmitted to the transmitter.Type: GrantFiled: March 21, 2008Date of Patent: February 19, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Yoriko Utsunomiya, Masahiro Takagi
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Publication number: 20120315962Abstract: A communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period.Type: ApplicationFiled: August 17, 2012Publication date: December 13, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tetsu NAKAJIMA, Tomoko Adachi, Kiyoshi Toshimitsu, Tatsuma Hirano, Yoriko Utsunomiya
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Patent number: 8289987Abstract: A wireless communication system includes first and second wireless terminals capable of performing transmission by at least one of a first transmission scheme and a second transmission scheme. The first wireless terminal performs transmission of a first frame to the second wireless terminal by using the second transmission scheme. The second wireless terminal communicates with the first wireless terminal to notify the first wireless terminal of information associated with a status of the reception of the first frame transmitted from the first wireless terminal by using the first transmission scheme.Type: GrantFiled: September 24, 2008Date of Patent: October 16, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Adachi, Masahiro Takagi, Tomoya Tandai, Tetsu Nakajima, Yoriko Utsunomiya, Yasuyuki Nishibayashi, Daisuke Takeda
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Patent number: 8284753Abstract: A wireless communication apparatus including a main queue to store MAC frames, a plurality of subqueues related to the main queue and used to control retransmission of the MAC frame, each of the subqueues having different priority for transmission of the MAC frame, respectively, an extracting device configured to extract the MAC frame from the main queue on the basis of a destination and the priority, and distribute the extracted MAC frame to one of the plurality of subqueues for each priority, and an aggregating device configured to extract MAC frames from the plurality of subqueues to form a MAC super frame.Type: GrantFiled: March 14, 2008Date of Patent: October 9, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tomoya Tandai, Tetsu Nakajima, Yoriko Utsunomiya
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Patent number: 8274992Abstract: A physical frame is generated and transmitted to a destination terminal. In this physical frame, one of a data frame, an acknowledgement frame, and an acknowledgement request frame, and a transmission permission frame which is used in place of a normal Ack frame associated with a delayed Block Ack, and permits the destination terminal to perform piggyback transmission, are aggregated.Type: GrantFiled: December 23, 2009Date of Patent: September 25, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tetsu Nakajima, Tomoya Tandai, Yoriko Utsunomiya
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Patent number: 8271059Abstract: According to one embodiment, a communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period.Type: GrantFiled: December 15, 2011Date of Patent: September 18, 2012Assignee: Kabushiki Kaisha TOSHIBAInventors: Tetsu Nakajima, Tomoko Adachi, Kiyoshi Toshimitsu, Tatsuma Hirano, Yoriko Utsunomiya
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Patent number: 8228889Abstract: A communication apparatus which generates a single physical frame including a plurality of MAC frames, and which transmits the physical frame. The physical frame has variable-length bitmap information which includes bits corresponding to the plurality of MAC frames, respectively, and length information of the bitmap information. The communication apparatus can include a transmission scheme selecting device configured to select a transmission scheme of the physical frame to be transmitted as a response to the polling frame from a plurality of candidates in such a manner as to adapt to a channel estimate result estimated by the channel estimating device. The transmission scheme in this arrangement includes at least one of a modulation scheme and a coding ratio.Type: GrantFiled: September 25, 2006Date of Patent: July 24, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tetsu Nakajima, Yoriko Utsunomiya, Daisuke Takeda
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Publication number: 20120088460Abstract: According to one embodiment, a communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tetsu NAKAJIMA, Tomoko Adachi, Kiyoshi Toshimitsu, Tatsuma Hirano, Yoriko Utsunomiya
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Patent number: 8107404Abstract: By using multiple channels at the same time to realize broadbanding of the frequency channels and suppressing increase in the waiting time before starting transmission of wireless signals, improvement of the practical throughput can be realized.Type: GrantFiled: December 18, 2008Date of Patent: January 31, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yoriko Utsunomiya, Tetsu Nakajima, Tomoya Tandai, Masahiro Takagi
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Patent number: 8068455Abstract: A radio communication apparatus that performs first radio communication using a first channel among two first channels each having a first channel width, and second radio communication using a second channel having a second channel width that is wider than the first channel width and also having a channel width overlapping with the two first channels. The apparatus includes an interference detection device which detects that interference occurs in the first channel among the two first channels, and a frame generation unit which generates a notification frame that recommends the use of only the first channel width. An instruction unit instructs the frame generation unit to generate the notification frame when the occurrence of interference is detected by the interference detection device. A frame transmission unit transmits the notification frame generated from the frame generation unit in response to the instruction from the instruction unit.Type: GrantFiled: February 7, 2008Date of Patent: November 29, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yoriko Utsunomiya, Tomoko Adachi, Masahiro Takagi
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Patent number: 7990995Abstract: A wireless communication apparatus includes a main queue to store MAC frames, a plurality of subqueues related to the main queue and used to control retransmission of the MAC frame, each of the subqueues having different priority for transmission of the MAC frame, respectively, an extracting device configured to extract the MAC frame from the main queue on the basis of a destination and the priority, and distribute the extracted MAC frame to one of the plurality of subqueues for each priority, and an aggregating device configured to extract MAC frames from the plurality of subqueues to form a MAC super frame.Type: GrantFiled: May 26, 2005Date of Patent: August 2, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tomoya Tandai, Tetsu Nakajima, Yoriko Utsunomiya
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Patent number: 7940869Abstract: Radio communication system includes terminal including unit detecting radar wave transmitted through second-frequency channel, first-and-second-frequency channels through which radar wave fails to be transmitted being simultaneously utilized or one of first-and-second-frequency channels being utilized, unit generating radar-detection information including information indicating detection time when detecting unit detects radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-detection information, and base station including unit receiving radar-detection information, unit generating radar-occurrence information based on received-radar-detection information, radar-occurrence information including information indicating occurrence time when radar wave occurs, information indicating period of occurrence of radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-occurrence inType: GrantFiled: February 2, 2006Date of Patent: May 10, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Tomoya Tandai, Tomoko Adachi, Yoriko Utsunomiya, Daisuke Takeda, Kazumi Sato, Koji Ogura
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Patent number: 7924805Abstract: A communication apparatus having a generating which generates a single physical frame for transmission and reception. The physical frame includes a first Quality of Service (QoS) data frame, a second Quality of Service (QoS) data frame, and a transmission request for requesting transmission of first acknowledgement information corresponding to the first QoS data frame and second acknowledgement information corresponding to the second QoS data frame. The communication apparatus includes a transmitting unit configured to transmit the physical frame and a receiving unit configured to receive acknowledgment information including a reception of the physical frame transmitted.Type: GrantFiled: April 21, 2005Date of Patent: April 12, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tetsu Nakajima, Yoriko Utsunomiya, Daisuke Takeda
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Publication number: 20110064065Abstract: A wireless communication apparatus performs bi-directional communication with an initiator. The apparatus is allocated an allocation period for data transmission from the initiator. The apparatus includes means for generating a first physical frame including an acknowledgement frame with respect to data received from the initiator, and generating a second physical frame in which a plurality of transmission data frames addressed to the initiator are aggregated. The apparatus also includes means for transmitting the first physical frame at a first transmission rate and the second physical frame at a second transmission rate, during the allocation period.Type: ApplicationFiled: November 19, 2010Publication date: March 17, 2011Inventors: Tetsu NAKAJIMA, Tomoko ADACHI, Masahiro TAKAGI, Tomoya TANDAI, Yoriko UTSUNOMIYA, Toshihisa NABETANI
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Patent number: 7903632Abstract: A communication apparatus includes a receiving device configured to receive one physical frame in which a plurality of MAC frames are aggregated. This physical frame includes one acknowledgement request frame for the plurality of MAC frames. The apparatus includes an acknowledgement frame forming device configured to form an acknowledgement frame representing reception statuses of the plurality of MAC frames in response to the acknowledgement request frame. The apparatus also includes a transmitting device configured to transmit the acknowledgement frame. This acknowledgement frame includes a compressed acknowledgement frame representing an acknowledgement bitmap having a size equal to a maximum number of MSDUs (MAC Service Data Units) when one MPDU (MAC Protocol Data Unit) corresponds to one MSDU.Type: GrantFiled: October 27, 2009Date of Patent: March 8, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tomoya Tandai, Tetsu Nakajima, Yoriko Utsunomiya
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Patent number: 7903607Abstract: There is disclosed a wireless communication apparatus in which a first wireless communication using one first channel of two first channels each having a first bandwidth, and a second wireless communication using a second channel having a second bandwidth wider than the first bandwidth and having a band overlapping those of the two first channels are performed. A selection unit selects a Basic Service Set (BSS) operational mode on the basis of a load amount of the other first channel of the two first channels. A generation unit generates a management frame indicating the BSS operational mode selected by the BSS mode selection unit. A transmission unit transmits the management frame.Type: GrantFiled: September 19, 2007Date of Patent: March 8, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yoriko Utsunomiya, Tomoko Adachi, Masahiro Takagi
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Publication number: 20110044257Abstract: By using multiple channels at the same time to realize broadbanding of the frequency channels and suppressing increase in the waiting time before starting transmission of wireless signals, improvement of the practical throughput can be realized.Type: ApplicationFiled: December 18, 2008Publication date: February 24, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yoriko Utsunomiya, Tetsu Nakajima, Tomoya Tandai, Masahiro Takagi