公开(公告)号：US10779218B2

公开(公告)日：2020-09-15

申请号：US16298121

申请日：2019-03-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Ren Sakata ,  Hiroki Kudo ,  Sakie Nagakubo ,  Suh Wuk Kim

IPC: H04W28/02 ,  H04W84/18 ,  H04W40/26 ,  H04L12/733 ,  H04W40/24 ,  H04W40/02 ,  H04W72/04

Abstract: According to one embodiment, a data management device collecting data from a plurality of wireless nodes in a wireless multihop network is provided. The data management device includes a transceiver configured to transmit and receive a radio signal; and controlling circuitry. The controlling circuitry determines a first range of numbers of hops from the data management device for execution of route control in the wireless multihop network, performs the route control for the first range of numbers of hops and does not perform the route control beyond the first range of numbers of hops from the data management device.

公开(公告)号：US10193661B2

公开(公告)日：2019-01-29

申请号：US15443774

申请日：2017-02-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Fumiaki Kanayama ,  Yusuke Doi ,  Hiroki Kudo ,  Yuji Tohzaka ,  Ren Sakata

IPC: H04L1/18 ,  H04L1/16 ,  H04L1/00

Abstract: According to one embodiment of the present invention, there is provided a communication device includes: processing circuitry configured to generate first bitmap data indicating a calculated value of a function based on identifiers of other first communication devices; and a communicator configured to transmit a first message including the first bitmap data.

公开(公告)号：US10103973B2

公开(公告)日：2018-10-16

申请号：US14751473

申请日：2015-06-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takaomi Murakami ,  Yoshihiro Oba ,  Ren Sakata ,  Hiroki Kudo ,  Jumpei Ogawa

IPC: H04L12/707

Abstract: A communication device according to an embodiment is included in a multi-hop network. The communication device includes a holder, a storage, a switcher, and a controller. The holder holds communication data. The storage stores path information including an identifier that identifies a communication path and destination information that indicates a destination of communication data on the communication path. The switcher switches a communication path used to transmit communication data on the basis of the path information stored in the storage. The controller transmits communication data to a destination of a communication path switched by the switcher.

公开(公告)号：US09571214B2

公开(公告)日：2017-02-14

申请号：US14309656

申请日：2014-06-19

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuji Tohzaka ,  Hiroki Kudo ,  Takafumi Sakamoto

IPC: H04J3/06

CPC classification number: H04J3/0664 ,  H04J3/0641

Abstract: According to an embodiment, a wireless communication unit includes a media access control (MAC) unit. The MAC unit includes a clock unit, an acquisition unit and a calculation unit. The clock unit includes a register which stores periodically counted-up first time information. The acquisition unit acquires a statistic for reception quality information on the received packet. The calculation unit normalizes the second time information, weights the normalized second time information using a time weight based on the statistic, and calculates a time correction value for correcting the first time information, using the weighted and normalized second time information. The time weight increases with increasing link stability indicated by the statistic.

Abstract translation: 根据实施例，无线通信单元包括媒体访问控制（MAC）单元。 MAC单元包括时钟单元，采集单元和计算单元。 时钟单元包括一个寄存器，该寄存器周期性地存储第一次累计的信息。 获取单元获取关于接收到的分组的接收质量信息的统计量。 计算单元对第二时间信息进行归一化，使用基于统计量的时间权重对归一化的第二时间信息进行加权，并且使用加权且归一化的第二时间信息来计算用于校正第一时间信息的时间校正值。 时间权重随着统计数据指示的链路稳定性的增加而增加。

公开(公告)号：US09337747B2

公开(公告)日：2016-05-10

申请号：US14025761

申请日：2013-09-12

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takafumi Sakamoto ,  Yuji Tohzaka ,  Hiroyuki Kitagawa ,  Hiroki Kudo

IPC: H02M1/08 ,  H02M7/493

CPC classification number: H02M7/493

Abstract: According to one embodiment, an inverter apparatus includes a power conversion unit, a wireless communication unit and a control unit. The power conversion unit converts input power that is one of DC power and AC power into AC output power. The wireless communication unit wirelessly receives a first synchronization signal. The control unit controls a phase of the output power based on the first synchronization signal.

Abstract translation: 根据一个实施例，逆变器装置包括功率转换单元，无线通信单元和控制单元。 电力转换单元将作为直流电力和交流电力之一的输入电力转换成交流输出电力。 无线通信单元无线地接收第一同步信号。 控制单元基于第一同步信号控制输出功率的相位。

公开(公告)号：US11240725B2

公开(公告)日：2022-02-01

申请号：US16551813

申请日：2019-08-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Sakie Nagakubo ,  Ren Sakata ,  Hiroki Kudo

IPC: H04W36/30 ,  H04W36/08

Abstract: According to an embodiment, a wireless communication device includes a memory and one or more hardware processors coupled to the memory. The one or more hardware processors are configured to function as a communication control unit and a determination unit. The communication control unit transmits and receives data to and from a first wireless communication device. The determination unit calculates transmission and reception information based on a transmission and reception result of the data, and variation of received signal intensity of the data, and determines whether to maintain connection to the first wireless device based on the transmission and reception information and the variation. The communication control unit controls communication according to a determination result of the determination unit.

公开(公告)号：US10034241B2

公开(公告)日：2018-07-24

申请号：US14879271

申请日：2015-10-09

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Ren Sakata ,  Hiroki Kudo

IPC: H04W72/06 ,  H04W52/02 ,  H04B7/155 ,  H04L5/16 ,  H04W72/04

Abstract: A wireless communication device according to an embodiment includes a transceiver and a timer. The transceiver transmits and receives data and transmits the data in a first direction and a second direction. The timer determines a timing for the transceiver to transmit data such that a transmission interval in the first direction is longer than a transmission interval in the second direction.

公开(公告)号：US20170142710A1

公开(公告)日：2017-05-18

申请号：US15264943

申请日：2016-09-14

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Ren SAKATA ,  Hiroki Kudo ,  Fumiaki Kanayama ,  Yuji Tohzaka ,  Sakie Nagakubo ,  Suhwuk Kim

IPC: H04W72/04

CPC classification number: H04W72/0446 ,  H04W84/10

Abstract: A wireless communication device according to an embodiment is one of a plurality of wireless communication devices in a multihop wireless communication system to transmit and receive information with each other. The wireless communication device has: a transmitter configured to transmit information in an m-th slot (m is an integer equal to or more than 1 and equal to or less than M, M is an integer equal to or more than 2) in a first slot group in N slot groups (N is an integer equal to or more than 2) in a frame, respective one of the slot groups including M slots, and a controller configured to control the transmitter to receive a connection request in an m-th slot in a second slot group in the N slot groups from a wireless communication device not included in the plurality of wireless communication devices.

公开(公告)号：US20170078344A1

公开(公告)日：2017-03-16

申请号：US15060905

申请日：2016-03-04

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yujen Lai ,  Yosuke Bando ,  Kenichi Maeda ,  Masahiro Ishiyama ,  Ren Sakata ,  Hiroki Kudo ,  Takeshi Sakoda

IPC: H04L29/06

CPC classification number: H04W76/40 ,  H04L1/0002 ,  H04L12/18 ,  H04L12/1863 ,  H04L41/0816 ,  H04W24/02

Abstract: According to one embodiment, a communication apparatus includes a radio interface unit that sends a data message to a receiver and extracts, when a message sent by the receiver via unicast with an optimized transmission rate is received, rate information indicating the optimized transmission rate of the receiver from the received message, a message processor that generates the data message, in which a multicast identifier indicating a multicast group is a destination, and outputs the data message to the radio interface unit, and a selector that selects, according to the rate information, a data message transmission rate to send the data message.

Abstract translation: 根据一个实施例，一种通信装置包括：无线电接口单元，其向接收机发送数据消息，并且当接收到通过接收机通过单播发送的消息具有优化的传输速率时，提取表示最佳传输速率的速率信息 接收器，生成数据消息的消息处理器，其中指示多播组的组播标识符是目的地，并将数据消息输出到无线电接口单元;以及选择器，根据速率信息 ，数据报文传输速率发送数据报文。

公开(公告)号：US09456316B2

公开(公告)日：2016-09-27

申请号：US14483581

申请日：2014-09-11

Applicant: Kabushiki Kaisha Toshiba

Inventor： Masahiro Ishiyama ,  Arata Miyamoto ,  Kenichi Maeda ,  Hiroki Kudo ,  Hiroto Nakai

IPC: H04H20/71 ,  H04W4/06 ,  H04L29/08 ,  H04L12/741

CPC classification number: H04W4/06 ,  H04L45/745 ,  H04L67/104

Abstract: A mode of a publisher or a subscriber is stored. Also, a first identifier indicating affiliation to a first group is stored. In a case of the publisher, a transmission message including ToC information, which is a list of the first identifiers and data to be transmitted, is transmitted to an outside. In a case of the subscriber, when a received message includes the first identifier, data included in the message is stored into a non-volatile memory, and when it is determined that all data in the ToC information stored in the received message are already received and that the number of publishers is less than a threshold, the stored mode is changed to the publisher.

Abstract translation: 存储发行商或订户的模式。 此外，存储指示与第一组的隶属关系的第一标识符。 在出版者的情况下，将包含ToC信息的传输消息（作为要发送的第一标识符和数据的列表）发送到外部。 在用户的情况下，当接收的消息包括第一标识符时，包括在消息中的数据被存储到非易失性存储器中，并且当确定存储在接收到的消息中的ToC信息中的所有数据已经​​被接收到 并且发布者的数量小于阈值，则将存储的模式更改为发布者。