Fujitsu Corporation

Hitoshi Ueno

Kenichi Abiru

Masaaki Takase

Makoto Kubota

Kenichi Fukuda

Takao Ogura

Kouichirou Amemiya

Kohei Iseda

Kazumine Matoba

Fumiyuki Iizuka

Akira Chugo

Hitoshi Yamada

Satoshi Imai

Keiji Miyazaki

Akiko Yamada

Akira Nagata

Makoto Minoura

Miho Tanaka

Takashi Onodera

Kazutaka Ogihara

Sumiyo Okada

Noriyuki Fukuyama

Koji Nakamichi

Nami Nagata

Takafumi Chujo

Masataka Sonoda

Shunsuke Kikuchi

Masanori Yamazaki

Kei Hamada

Masahiko Ohashi

Kiyoshi Sugita

Chunghan Lee

Takashi Enami

The process includes acquiring, from a relay device that relays a packet between a first communication device and a second communication device, a plurality of first delay times generated by a round trip of the packet between the first communication device and the relay device, and a plurality of second delay times generated by a round trip of the packet between the second communication device and the relay device, sorting separately the plurality of first delay times and the plurality of second delay times based on a length of a delay time, and calculating device delay times based on a first delay calculation that calculates a difference between each of the plurality of first delay times and each of the plurality of second delay times in a same rank after the sorting.

Packet analysis device and packet analysis method

A computer readable network analysis program of performing local modeling analysis of determining an estimated value of a current network quality corresponding to explanatory variable vector in current aggregated data based on a local model including local training data; determining an abnormality in the network based on whether or not a measured value of the current network quality is lower than a threshold; determining whether or not a distribution of the connections having the measured value of the network quality exceeding the threshold is present in a large size; extracting an individual-analysis-target connection group including more than predetermined proportions of connections in the distribution of the connections having the large size; and performing the local modeling analysis to the individual-analysis-target connection group and the remaining connection groups to determine the abnormality in the network.

Network analysis program, network analysis device, and network analysis method

A non-transitory computer-readable storage medium storing a packet analysis program for causing a computer to execute a process, the process includes acquiring packets communicated between nodes, adding information of communication of ongoing couplings to an ongoing coupling list in each of predetermined time ranges belonging to start times of the couplings based on the packets, and removing information of communication of a terminated coupling from the ongoing coupling list based on the packets, and analyzing the quality of the communication of the terminated coupling in a cycle corresponding to a time range among the time ranges, and analyzing the quality of communication related to a coupling present in the ongoing coupling list even when the cycle has elapsed a predetermined number of times or more after the addition of information of the coupling to the ongoing coupling list.

Storage medium and packet analyzing device

A distribution process system includes a first terminal configured to, in accordance with a change relating to a processing load, perform transmission of first information relating to the processing load of the first terminal to a second terminal having a transmission frequency of a message relating to a processing load of the second terminal to a management device higher than a transmission frequency of a message relating to the processing load of the first terminal, the second terminal configured to, in response to receiving the first information, transmit to the management device a first message relating to the processing load of the second terminal and the first information, and the management device configured to manage a load state of each of the first terminal and the second terminal, and update the load state of the first terminal in accordance with the first information in response to receiving the first information.

Distribution process system and distribution process method

A communication path management apparatus includes a memory, and a processor coupled to the memory and to decide, for each of processing-pairs, part of inter-adjacent-server communication paths that couple adjacent servers on communication paths among servers in the network as data-transfer-paths used for data transfer from a first processing to a second processing of a processing-pair, the processing-pair including first and second processings that are consecutive in the order of execution, based on an execution track record of the first processing that is earlier in the order of execution and the second processing that is later in the order of execution in the processing-pair in each of the servers, and instruct servers at both ends of the data-transfer-paths decided regarding each of the processing-pairs to carry out data transfer of an execution result of the first processing by the data-transfer-paths.

Communication path management apparatus and communication path management method

A data transfer method includes: executing a process that stores sensor information including duplicate degrees and position information, the duplicate degrees indicating an amount of computers as transmission sources of inhibit signals received by the first computer; executing a process that transmits the inhibit signal including the duplicate degree in the sensor information to a computer that is present in a position to which direct communication via the short-distance radio communication is possible; executing a process that stores the duplicate degree in the inhibit signal, associates the duplicate degree with the transmission source of the inhibit signal, and increases the duplicate degree in the sensor information; and executing a process that transmits the position information in the sensor information to the management device in a case where the duplicate degree in the sensor information is higher than the duplicate degree associated with the transmission source of the inhibit signal.

Non-transitory computer-readable storage medium, data transfer device, and data transfer method

A content acquisition device includes a processor that executes a procedure. The procedure includes: referencing other device holding information in which identification information of another device is associated with the oldest sequence information, making a request to a device indicated by device identification information included in a content acquisition request for acquisition target content, in cases in which an accumulation sequence indicated by sequence information associated with the identification information of the device included in the content acquisition request is older than the accumulation sequence indicated by the sequence information included in the content acquisition request, and searching for a device holding the acquisition target content and making a request to a found device for the acquisition target content, in cases in which the accumulation sequence is newer than the accumulation sequence indicated by the sequence information included in the content acquisition request.

Content acquisition device and method

A distributed control method in a distributed control system including a process executed by a by a first notification device, the process including notifying a detection of a first event to a second notification device, storing, in a storage device, acknowledgement information associating an event identifier indicating the first event with a device identifier indicating the second notification device when a negative acknowledgement is received from the second notification device, determining whether the event identifier indicating the first event is stored in the storage device or not when a request for a notification of the detection of the first event is received from a third notification device, and deleting, from the storage device, a device identifier associated with the event identifier indicating the first event when it is determined that the event identifier indicating the first event is stored in the storage device.

Distributed control method, distributed control system, and non-transitory computer-readable storage medium

A content transmission method including: searching, when a first information processing device receives a transmission request for a first content from a second information processing device, for a third information processing device within information processing devices, at least one of the information processing devices having a connection with the second information processing device and currently transmitting a second content to the second information processing device; and transmitting to the third information processing device, by the first information processing device, the first content and an instruction to transmit the transmitted first content from the third information processing device to the second information processing device in accordance with the transmission request.

Content transmission method, content transmission device, and recording medium

A content distribution method executed by a computer includes referring to a result of comparing information identifying content data stored in a storage unit with information identifying content data stored in one or more other storage units included in one or more other computers; and collecting representative image data of content data not stored in the storage unit from the one or more other storage units included in the one or more other computers storing the content data not stored in the storage unit, starting from one of the one or more other computers having a greatest number of pieces of the content data.

Content distribution method and content distribution server

A content acquisition device includes a processor that executes a procedure. The procedure includes: acquiring group data to identify a group that a user belongs to; and based on a period of time needed to acquire content from each of a first data processing device that holds content shared by the group indicated by the group data, and a second data processing device that is in the process of acquiring the content from the first data processing device, selecting a data processing device from which to acquire the content.

A proxy assignment apparatus includes a processor or wired logic hardware configured to detect a first data request issued from a terminal apparatus for requesting first data. The processor or wired logic hardware is configured to determine whether a first proxy server that satisfies a condition exists, wherein the first proxy server corresponds to a media access control address of the terminal apparatus. The processor or wired logic hardware is configured to report a first internet protocol address of the first proxy server to the terminal apparatus when it is determined that the first proxy server exists.

Proxy assignment apparatus and method for assigning proxy

A non-transitory computer-readable recording medium has stored therein a program for causing a computer to execute a process, the process includes transferring communication data, transmitted from a first apparatus, which includes data and a first attribute regarding the data, to a second apparatus, receiving a notification that includes a second attribute regarding the data and a transfer destination of the communication data inclusive of the second attribute, transferring the communication data inclusive of the second attribute to a third apparatus of the transfer destination included in the notification; and transferring the notification to other transfer apparatus.

Recording medium having stored therein a transfer program, transfer apparatus, and transfer method

A method of content delivery executed by a computer is provided. The computer specifies an identifier of a content associated with an user identifier, an identifier of a device at a delivery destination of the content, and time until data of the content is delivered to the device at the delivery destination, when event data including the user identifier read by a sensor is received. The computer calculates, from the specified time, a clock time to start content sending to the device at the delivery destination of the content or a clock time to start data sending to a device that carries out the content sending, and stores these data, and sends the stored data to the device of the delivery destination, at a clock time that is stored in the data storage unit.

Method of content delivery, information processing device, and information processing system

A disclosed system includes a first computer that stores data, a display apparatus that is capable of reading a user identifier, a second computer, and plural third computers. The second computer includes a data storage unit storing first correlation data to correlate a user identifier with at least one third computer, and a controller that refers to the first correlation data upon detecting an event data, identifies a third computer correlated with a first user identifier included in the event data, and transmits the first user identifier to the identified third computer. Each third computer includes a receiver that receives the first user identifier, a storing unit that obtains from the first computer, and stores data identified based on the received first user identifier, and a controller to transmit data corresponding to a second user identifier, which was received from the display apparatus, based on the second user identifier.

Growing community of inventors

Kawasaki, Japan

Hitoshi Ueno