Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Suh Wuk Kim

Hiroki Kudo

Sakie Nagakubo

Yasuyuki Tanaka

Ren Sakata

Masaki Nishio

Yuma Nogami

Yuji Tohzaka

Fumiaki Kanayama

Yu Yu

A communication device according to one embodiment includes one or more hardware processors. The processors serve to acquire, from at least one electronic device, output data output from the electronic device. The processors serve to communicate with a server device by a communication technique in which numbers indicating communication timings are synchronized. The processors also serve to transmit, to the server device as a destination, the output data in association with a first number out of the numbers. The first number indicates a timing at which the output data is acquired.

Communication device, computer program product, and communication system

A communication system according to an embodiment includes a server system and one or more communication apparatuses. The server system includes a first hardware processor. The first hardware processor determines frequency information indicating processing frequency of predetermined processing executed by the communication apparatuses. The frequency information is determined on the basis of determination information affecting the predetermined processing. The first hardware processor transmits processing frequency of the predetermined processing to the communication apparatuses. The processing frequency is determined on the basis of the frequency information. The communication apparatuses each include a second hardware processor. The second hardware processor receives the processing frequency of the processing from the server system. The second hardware processor executes the predetermined processing on the basis of the received processing frequency.

Communication system, communication method, communication apparatus, and computer program product

A communication device includes one or more processors. The processors acquire, from at least one electronic device, output data output from the electronic device and current time information managed by the electronic device. The processors communicate with a server device using a communication technique in which numbers indicating communication timings are synchronized, and transmits the output data to the server device. The processors calculate corrected time information by correcting the current time information on the basis of a reference number indicating a number serving as a reference. The processors set the calculated corrected time information in the electronic device.

A radio communication system according to an embodiment includes a plurality of radio devices constituting a multi-hop network. The radio devices each include a hardware processor and perform management by synchronizing a timing of an uplink period including X frames and a timing of a downlink period including Y frames. X and Y are different values. The radio devices each allocate the hop count of each radio device of the plurality of radio devices to at least one frame in the uplink period and at least one frame in the downlink period. The radio devices each transmit uplink data in the frame to which the hop count of the own radio device is allocated in the uplink period. The radio devices each transmit downlink data in the frame to which the hop count of the own radio device included in the downlink period is allocated.

Radio communication system, radio device, and computer program product

A communication device according to an embodiment includes one or more hardware processors. The one or more hardware processors: receives, from a server device performing communication by a communication method of synchronizing a number indicating a communication timing, a reference number indicating the number serving as a reference; and determines a processing timing of predetermined processing, based on the reference number.

Communication device, communication method, computer program product, and communication system

A wireless communication device includes a memory and a wireless interface and processing circuitry. The memory configured to store data to be transmitted and received. The wireless interface configured to transmit and receive a wireless signal. The processing circuitry coupled to the memory and configured to receive a message from another wireless device, including destination information and acknowledgement information, via the wireless interface, set, in a first period being a period in which the message from a child node which transmits the message upward while setting the child node itself as a destination is received, the acknowledgement information with respect to data received from the child node, process the message including the destination information and the acknowledgement information, and transmit a message including the set acknowledgement information via the wireless interface to another wireless device.

Wireless communication device, wireless communication method and non-transitory computer readable medium

According to one embodiment, a data transmission device, includes: a wireless transmitting circuitry transmitting a wireless signal; measurement circuitry measuring a state of a measurement target at a first sampling rate and acquiring a first measurement value of the state of the measurement target; and controlling circuitry determining whether the first measurement value satisfies a first condition based on a first threshold value. The wireless transmitting circuitry transmits the plurality of first measurement values acquired before the first condition is satisfied when the first condition is satisfied. The measurement circuitry switches the first sampling rate to a second sampling rate higher than the first sampling rate when the first condition is satisfied, measures a state of the measurement target at the second sampling rate, and acquires a second measurement value of the state of the measurement target. The wireless transmitting circuitry transmits the second measurement value.

Data transmission device, non-transitory computer readable medium, and data reception device

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.

Data management device, wireless communication device and wireless multihop network

A wireless communication device for wireless relay communication includes a network interface, a data storage, and a processor. The processor determines whether or not to continue communication with a current parent node based on a communication status with the current parent node. Upon determining not to continue communication with the current parent node, the processor determines part of the nodes in the network to be one or more candidates for a new parent node, based on hop numbers of the nodes stored in the data storage, each of which is associated with one of the nodes in the network, wherein a hop number of a node indicates a node distance between the node and a reference node, causes the network interface to be in a receivable state during time slots associated with the one or more candidates, and selects one of the candidates as the new parent node.

Growing community of inventors

Kawasaki, Japan

Suh Wuk Kim