Fujitsu Corporation

Suntory Holdings Limited

Fujitsu Semiconductor Limited

Hiromasa Yamauchi

Koichiro Yamashita

Takahisa Suzuki

Koji Kurihara

Toshiya Otomo

Naoki Odate

Yuta Teranishi

Fumihiko Hayakawa

Tetsuo Hiraki

Teruhisa Ninomiya

Kiyoshi Miyazaki

Makoto Hamaminato

Akihiro Wada

Susumu Furukubo

Hitoshi Ikeda

Hideo Miyake

Miyoshi Saito

Tatsuya Kikuzuki

Kaoru Yokoo

Makiko Ito

Kensuke Sawada

Shiho Nakahara

Kensuke Watanabe

Akihito Kataoka

Tetsuya Saka

An installation location determination device for a radio device, includes a memory and a processor. The memory stores device information on a transmitter and a receiver, and environment information. The processor executes a process including, performing first simulation using a ray tracing method based on the device information and the environment information to calculate first received signal strengths at a plurality of installation candidate points, located respectively at centers of a plurality of installation candidate locations where the receiver is to be installed, and a plurality of neighboring points set for each of the installation candidate points within a first distance from the installation candidate point, calculating second received signal strengths in the respective installation candidate locations based on a calculation result of the first received signal strengths, determining an installation location of the receiver based on the second received signal strengths, and outputting the installation location.

Installation location determination device and method for installation location determination of radio device

An information processing apparatus includes a memory, and a processor coupled to the memory and configured to obtain location information indicating locations of a wireless transmitter and a wireless receiver, simulate a first power of a first reception signal at the wireless receiver in a condition that a radio signal is transmitted from the wireless transmitter, identify a first probability distribution model in accordance with the first reception signal, identify a first parameter of the first probability distribution model in accordance with the first power and a propagation environment defined by the locations of the wireless transmitter and the wireless receiver indicated by the location information, and based on the first probability distribution model using the first parameter, simulate a second power of a second reception signal at around the wireless receiver.

Information processing apparatus, method and non-transitory computer-readable storage medium

An information processing apparatus includes, a memory that stores location information of a plurality of objects to be arranged within a three-dimensional space, and a processor. The processor performs a process. The process includes, generating first image data of the plurality of objects based on the location information, outputting the first image data to a display, determining a display plane including a location corresponding to one point of the first image, generating second image data which includes a display plane image and installation candidate marks, outputting the second image data to the display, determining whether a surface corresponding to any one of the installation candidate marks has been selected according to an inputted selection instruction, and determining the installation location of the wireless device based on the location corresponding to one point of the first image, and a location of the selected surface.

Information processing apparatus, and installation location determination method

There is provided a radio wave interference analysis apparatus configured to analyze a state of interference due to a plurality of interference signals of a plurality of interference sources on a target signal of a wireless device as an evaluation target at a reception point, the radio wave interference analysis apparatus including a memory, and a processor coupled to the memory and the processor configured to calculate a first probability of failure of reception of the target signal at the reception point due to collision of the target signal with an interference signal of the plurality of interference signals, calculate a second probability of failure of reception of the target signal at the reception point due to the interference signal of the plurality of interference sources, and output the first probability and the second probability.

Radio wave interference analysis apparatus, method, and medium

The present invention relates to a method for identifying the variety of a hop by using an identification marker comprising at least one single nucleotide polymorphism that differs among varieties, and a method for preparing said identification marker. The present invention also provides a primer or a probe to be used in the method for identifying the variety of a hop, and a nucleic acid of a region including said identification marker. The present invention further provides a method for detecting the intrusion of different varieties in a hop sample.

Method for identifying variety of hop

A communications node includes a first transmitting circuit configured to transmit to plural communications nodes, a confirmation signal for confirming whether response is possible; a receiving circuit configured to receive from first communications nodes capable of responding among the plural communications nodes, a response signal for the transmitted confirmation signal; a selecting circuit configured to select from among the first communications nodes and based on reception strength of the received response signal, a second communications node to which execution of data processing is requested by the communications node; a strength calculating circuit configured to calculate based on the reception strength of the response signal from the selected second communications node, a transmission strength to the second communications node; and a second transmitting circuit configured to transmit to the second communications node and based on the calculated transmission strength, a request signal requesting execution of the data processing.

Communications node, system, communications method, and computer product

A first node included in a first layer determines whether there has occurred a failure in a sink node included in a second layer subordinate to the first layer. The first node requests a second node included in the second layer to collect information of a third node included in a third layer subordinate to the second layer when the first node determines that there has occurred a failure in the sink node. The first node determines a fourth node serving as a substitute for the failed sink node included in the second layer on a basis of the information of the third node collected by the second node.

Communication method, non-transitory computer-readable recording medium, and communication system

A data network management system includes a data network management apparatus; and plural data processing apparatuses installed in an installation area and configured to transmit data to the data network management apparatus. The plural data processing apparatuses transmit identification information thereof together with the processed data to the data network management apparatus. The data network management apparatus determines based on identification information of data processing apparatuses that have completed a given authentication test among the plural data processing apparatuses and the identification information obtained from the plural data processing apparatuses installed in the installation area, a first data processing apparatus from which the data is to be obtained among the plural data processing apparatuses.

Data network management system, data network management apparatus, data processing apparatus, and data network management method

Among plural communications nodes that transfer data to a communications apparatus by multihop communication, a communications node includes a transmitting circuit configured to transmit a synchronization request signal requesting transmission of a synchronization signal for synchronizing the multihop communication at the communications node; a receiving circuit configured to receive the synchronization signal in response to the synchronization request signal transmitted by the transmitting circuit; and a power control circuit configured to control the receiving circuit such that a state of the receiving circuit is a first state where power consumption of the receiving circuit is a first power before the transmitting circuit transmits the synchronization request signal and is a second state where the power consumption of the receiving circuit is a second power that is higher than the first power after the transmitting circuit transmits the synchronization request signal.

Communications node, system, and synchronizing method

A system has a group of nodes that perform multi-hop communication therebetween and a communications apparatus that communicates with a node included in the group of nodes. The node adds to data transmitted by the node, a hop count updated each time the data is transferred by the multi-hop communication and a reference hop count for the data to be transferred from the node to the communications apparatus, and transmits the data. The communications apparatus, when receiving the data, compares the reference hop count and the hop count added to the data, and based on a result of comparison, determines whether failure has occurred at a given node in the group of nodes.

System, node, failure determining system, failure determining method, and computer product

A distributed processing method of a system in which communications apparatuses communicate data by multi-hop communication is executed by a given communications apparatus among the communications apparatuses. According to the method, the given communications apparatus executes a given process based on a result of a first process executed by a first communications apparatus that among the communications apparatuses, communicates directly with the given communications apparatus and operates using power stored in a charging device charged by power generated from energy obtained corresponding to an environment where installed. The given communications apparatus executes the given process when receiving the result of the first process from the first communications apparatus. The given communications apparatus further determines whether a given period has elapsed since receiving the result of the first process, and transmits a result of the given process to the first communications apparatus when determining that the given period has elapsed.

Distributed processing method, system, and computer product

When a first sensor node has a large power consumption, an information processing apparatus propagates a portion of request information for a data process having the request recipient set to a second sensor node, through a path that does not pass through the first sensor node. For example, the information processing apparatus changes a division rate at a third sensor node acting as a branching point for the request information for the data process having the request recipient set to the second sensor node to thereby change the distribution of the transferred data amount and equalize the power consumption of the sensor nodes in a sensor network.

Information processing method, communications method, communications node, system, and computer product

A sensor node among sensor nodes that synchronously switch between a first state and a second state transmits an abnormality notification signal to a collecting apparatus when in the first state and an abnormality occurs at the sensor node. The sensor node, when in the second state, transmits to the communications apparatus, a data signal that differs from the abnormality notification signal. During each interval of the first state, the sensor node enters a third state during a first partial interval of the interval of the first state, and receives and transfers an abnormality notification signal transmitted by another sensor node among the sensor nodes. During each interval of the first state, the sensor node further enters a fourth state during a second partial interval of the interval of the first state and different from the first partial interval, and refrains from receiving the abnormality notification signal.

System, communications node, and switching method

A system includes communications nodes, respectively having a sensor; and a communications apparatus that simultaneously requests the communications nodes to transmit sensor data. A first communications node among the communications nodes, when determining that among a first state where the communications apparatus includes the first communications node when requesting transmission and a second state where the communications apparatus excludes the first communications node when requesting transmission, the first communications node is in the second state: determines whether a predetermined difference is present between a predetermined value and the sensor data of the first communications node, and transmits a notification signal that notifies the communications apparatus of the predetermined difference, when determining that the predetermined difference is present.

System, communications node, and determining method

A data processing apparatus includes a storage unit configured to store plural data processing programs and a corresponding error processing program for when an error occurs with a first data processing program; and a processor configured to record to memory before executing the first data processing program, information of the error processing program that corresponds to the first data processing program; update and record in the memory after the first data processing program ends, information of a second data processing program scheduled to be executed next; and switch to any one among the first data processing program that corresponds to information recorded in the memory and the error processing program, when program processing is started next.

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Kawasaki, Japan

Hiromasa Yamauchi