Patents Assigned to Fujitsu Limited
  • Publication number: 20210136833
    Abstract: A random access method and data reception method, apparatuses thereof and communication system. The random access method includes: a terminal equipment transmits a random access preamble to a network device; and determines (considers) that a random access procedure corresponding to the random access preamble is successfully completed when the terminal equipment receives a first notification or when the terminal equipment receives a first notification and a condition of a first cell related to the random access preamble is satisfied; wherein the first notification is a notification of reception of a downlink control channel transmission and is received from a lower layer of the terminal equipment on the first cell, and/or a notification of reception of a downlink control channel transmission for response to the random access preamble and is received from the lower layer.
    Type: Application
    Filed: January 13, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Zhe CHEN, Lei SONG, Meiyi JIA, Lei ZHANG, Xin WANG
  • Publication number: 20210136606
    Abstract: A radio link detection method and apparatus and a communication system, the radio link detection apparatus being provided in a terminal equipment and including a detector, when a first timer related to radio link monitoring expires, the detector configured to determine that a radio link using an unlicensed frequency band fails, or, when a higher layer of the terminal equipment receives a random access problem indication and a second timer related to reestablishment is not running, the detector determining that a radio link using an unlicensed frequency band fails. Certain embodiments herein may provide for detecting a radio link failure using an unlicensed frequency band.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Meiyi JIA, Qinyan JIANG, Guorong LI, Xin WANG
  • Publication number: 20210135834
    Abstract: A base station that switches between uplink periods and downlink periods in a time division manner and performs communication, the base station includes a memory; processor circuitry coupled to the memory, wherein the processor circuitry is configured to: notify of allocation information indicating a combination of resources for time division duplex (TDD) uplink (UL) or downlink (DL) configuration at a predetermined interval; and generate control information indicating cancelation of transmission of a downlink signal, wherein the canceled transmission is configured to be performed by using one of the resources designated by the allocation information, and wherein the processor circuitry is further configured to transmit the generated control information.
    Type: Application
    Filed: January 15, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Publication number: 20210136736
    Abstract: Methods and apparatuses for transmitting and receiving downlink control information and a communication system. The apparatus for transmitting downlink control information (DCI) includes: a first transmitter configured to transmit to a terminal equipment first DCI indicating an interrupted first time-frequency resource used for transmitting uplink data, the first DCI at least comprising a first field indicating a position of the first time-frequency resource.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Xianjun YANG, Guoyu ZHANG, Pengyu JI, Lei ZHANG, Xin WANG
  • Publication number: 20210132824
    Abstract: A process for reducing amount of transmission of data to/from an external storage is performed in a computer. The process includes: storing a plurality of data sets by deduplicating a plurality in the external storage, wherein two or more data sets selected in order generated are collected in an object; determining necessity/unnecessity of defragmentation in units of object group in which two or more objects are collected in order generated; when determining to execute defragmentation, executing first defragmentation processing of acquiring all of the objects included in the object group as first objects from the external storage, combining valid data set having a number of references of 1 or more included in the first objects based on the order generated and the number of references to regenerate one or more second object, and storing the second object in place of the first objects in the external storage.
    Type: Application
    Filed: October 12, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori Furuta, Tomohiro UNO
  • Publication number: 20210133485
    Abstract: An analysis method executed by a computer includes acquiring a refine image that maximizes a score for inferring a correct label by an inferring process using a trained model, the refine image being generated from an input image used when an incorrect label is inferred; generating a map indicating a region of pixels having the same or similar level of attention degree related to inference in the inferring process, of a plurality of pixels in the generated refine image, based on a feature amount used in the inferring process; extracting an image corresponding to a pixel region whose level in the generated map is a predetermined level, from calculated images calculated based on the input image and the refine image; and generating an output image that specifies a portion related to an inference error in the inferring process, among the calculated images, based on image processing on the extracted image.
    Type: Application
    Filed: October 6, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori KUBOTA, Takanori Nakao, Yasuyuki Murata
  • Publication number: 20210133584
    Abstract: A method includes: generating a refine image from an incorrect image from which an incorrect label is inferred by a neural network; generating a third map by superimposing a first map and a second map, the first map indicating pixels to each of which a change is made in generating the refine image, of plural pixels in the incorrect image, the second map indicating a degree of attention for each local region in the refine image, each local region being a region that has drawn attention at the time of inference by the neural network, and the third map indicating a degree of importance for each pixel for inferring a correct label; and obtaining an added value for respective divided region in the third map by summing pixel values within the respective divided region, the respective divided region being a region divided according to a predetermined index.
    Type: Application
    Filed: September 16, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori KUBOTA, Takanori Nakao, Yasuyuki Murata
  • Publication number: 20210136676
    Abstract: A method of securing wireless backhaul for a child base station in a first network provided by a first operator, including: any parent base station with wireline backhaul capability and configured to virtualise a core network User Plane Function, UPF, advertises that it supports a wireless backhaul service; the child base station in the first network connects over an air interface to one or more parent base stations in a second network provided by a second operator; the child base station sends a backhaul service request to a connected parent base station; when the backhaul service request is accepted, the connected parent base station uses a virtualised UPF to enable a direct wireline backhaul link between the parent base station and a data network; and the child base station uses the air interface as a wireless backhaul link and the wireline backhaul link of the connected parent base station for backhaul.
    Type: Application
    Filed: January 3, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventor: Julien MULLER
  • Publication number: 20210133112
    Abstract: An information processing device includes: a cache memory; and a processor configured to: manage the number of times of reference to be used for deduplication control of a data block; store, among data blocks in the cache memory, a first management list in which the data block in which writing is requested and the number of times of reference is 1 is managed by a least recently used scheme, and, among the data blocks in the cache memory, a second management list in which the data block in which writing is requested and the number of times of reference is equal to or larger than 2 is managed by the LRU scheme; and in a case where a data block to be written is registered in the first management list when a write request is processed, maintain the data block registered in the first management list over the cache memory.
    Type: Application
    Filed: September 24, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventor: Jun KATO
  • Publication number: 20210135818
    Abstract: Downlink signal monitoring and transmitting method, and parameter configuration method and apparatus. The method includes: monitoring a downlink signal by a terminal equipment according to an antenna port quasi-co-location parameter; wherein the antenna port quasi-co-location parameter is related to a first cell and/or a second cell, or is related to a first reference signal index and a second reference signal index. Hence, even though a network device configures multiple carriers for the terminal equipment, the terminal equipment may be able to accurately determine an antenna port quasi-co-location parameter for receiving a downlink signal.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Zhe CHEN, Lei SONG, Lei ZHANG, Xin WANG
  • Publication number: 20210133481
    Abstract: A method includes: generating a refine image having a maximized correct label score of inference from an incorrect image from which an incorrect label is inferred by a neural network; generating a third map by superimposing a first map and a second map, the first map indicating pixels to each of which a change is made in generating the refine image, of a plurality of pixels of the incorrect image, the second map indicating a degree of attention for each local region in the refine image, the each local region being a region that has drawn attention by the neural network; and specifying a set of pixels that cause incorrect inference in the incorrect image by calculating a pixel value of the third map for each set of pixels, wherein the map generating processing adjusts the second map based on appearance frequency of each degree of attention.
    Type: Application
    Filed: September 25, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori KUBOTA, Yasuyuki Murata
  • Publication number: 20210133595
    Abstract: A method includes: selecting a plurality of models by using data set and a prediction result of a prediction model for the data set, each model being configured to linearly separate data included in the data set input to the prediction model; creating a decision tree such that a leaf of the decision tree corresponds to each selected model and a node of the decision tree corresponds to each of logics classifying the data from a root to each leaf of the decision tree; specifying a branch to be pruned by using variation in the data belonging to each leaf of the created decision tree; recreating the decision tree by using the data set corresponding to the decision tree in which the specified branch has been pruned; and outputting each of the logics corresponding to each node of the recreated decision tree as a description result of the prediction model.
    Type: Application
    Filed: October 26, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Shunichi WATANABE, YUSUKE OKI
  • Publication number: 20210133484
    Abstract: A method includes: generating a refine image having a maximized correct label score of inference from an incorrect image by which an incorrect label is inferred by a neural network; generating a third map by superimposing a first map and a second map, the first map indicating pixels to each of which a change is made in generating the refine image, of plural pixels of the incorrect image, the second map indicating a degree of attention for each local region in the refine image, the each local region being a region that has drawn attention at the time of inference by the neural network, and the third map indicating a degree of importance for each pixel for inferring a correct label; and specifying an image section based on a pixel value of the third map, the image section corresponding to a region causing incorrect inference in the incorrect image.
    Type: Application
    Filed: September 30, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori KUBOTA, Takanori NAKAO, Yasuyuki MURATA
  • Publication number: 20210135761
    Abstract: A transmission device including a multi-division optical modulator having a plurality of modulation segments, the transmission device includes a driver circuit configured to output binary data for each bit based on an input electrical signal, and an optical modulator configured to have a multilevel modulation segment driven by a first drive signal including two or more bit signal from the driver circuit, and plural binary modulation segments driven by second drive signal including only one bit signal from the driver circuit, wherein the multilevel modulation segment incudes a first phase shifter disposed on each arm of the optical modulator, the binary modulation segment includes a plurality of second phase shifters arranged along each arm of the optical modulator, and lengths of the second phase shifters are all the same and are shorter than a length of the first phase shifter.
    Type: Application
    Filed: October 20, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Shinsuke Tanaka, Yohei SOBU
  • Publication number: 20210134034
    Abstract: A region clipping method for clipping a region of a target object out of an image is performed by a computer. The method includes: referencing a memory storing three-dimensional positional information of the target object; and calculating, by using information on an imaging position for the image and orientation for the image, the region of the target object within the image from the three-dimensional positional information.
    Type: Application
    Filed: October 6, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Ippei KUSAKARI, Asako KITAURA, Takushi FUJITA
  • Publication number: 20210135851
    Abstract: An encryption processing system includes: a first device; second devices; and a third device, wherein the first device generates synthesis keys by selecting public keys of the second devices; generates an intermediate text from confidential texts generated by encrypting secret information by using public keys of the second devices having decryption authority; generates ciphertexts by further encrypting the intermediate text using the synthesis keys; and makes public the ciphertexts, each of the second devices verifies validity of the ciphertexts; generates decryption key fragments by using an own private key; and makes public the decryption key fragments, the third device verifies validity of the decryption key fragments; generates a decryption key by combining decryption key fragments; generates the Intermediate text by decrypting one of the ciphertexts; and makes public the intermediate text, and the second device decrypts the intermediate text using the own private key; and restores the secret information.
    Type: Application
    Filed: October 27, 2020
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Toshiya Shimizu, Takeshi SHIMOYAMA, Goichiro Hanaoka, Yusuke Sakai, Seonghan Shin
  • Publication number: 20210136361
    Abstract: An encoding device includes: a memory; and a processor coupled to the memory and configured to: estimate a prediction value in a reference direction that is selected when intra prediction in an angle prediction mode is performed in a block to be processed on the basis of a value indicating a reference direction selected when the intra prediction in the angle prediction mode has been performed in an adjacent block adjacent to the block to be processed; and binarize the value indicating the reference direction selected when the intra prediction in the angle prediction mode has been performed in the block to be processed and perform arithmetic encoding for a comparison result between a value of a most significant bit of a binary signal and the prediction value.
    Type: Application
    Filed: January 14, 2021
    Publication date: May 6, 2021
    Applicant: FUJITSU LIMITED
    Inventor: Guillaume Denis Christian Barroux
  • Patent number: 10996062
    Abstract: A data management system includes an information processing device and a data management device. The information processing device acquires an overall map from a storage in the data management device, estimates a location of the moving object at the time of capturing each of peripheral images that are determined to correspond to any of the key frame images which are stored in the storage among the peripheral images, and generate a local map representing each of the peripheral images which are determined as the key frame image. The management device updates a portion, corresponding to the local map, of the overall map stored in the storage based on the local map.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Atsunori Moteki, Taichi Murase
  • Patent number: 10996403
    Abstract: An optical fiber mounting method that mounts a plurality of optical fibers on a substrate includes: bundling the optical fibers together with a bundling member; adjusting a height of the bundling member from a surface of the substrate or an angle of inclination of the bundling member relative to the surface of the substrate; bringing end faces of the optical fibers bundled with the bundling member into contact with end faces of optical waveguides on the substrate, the optical waveguides respectively corresponding to the optical fibers; and bonding the optical fibers to the substrate, in a state where the end faces of the optical fibers are in contact with the end faces of the optical waveguides.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Matsumura, Naoaki Nakamura
  • Patent number: 10997006
    Abstract: A transfer apparatus for performing transmission and reception of data using a plurality of lanes includes: a transmission control unit configured to, upon receiving a transmission instruction for performing a data transfer in a redundant mode in which the same data is transferred using a plurality of lanes, output transmission data as first data and second data without renegotiation with another transfer apparatus; a first transmission unit configured to transmit the first data output by the transmission control unit via a first lane; and a second transmission unit configured to transmit the second data output by the transmission control unit via a second lane.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: May 4, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Yuichiro Ajima, Jouji Kunii, Souta Kusachi