Ntt, Inc.

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1.

WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, AND TRANSMISSION DEVICE

      
Application Number 18729177
Status Pending
Filing Date 2022-01-25
First Publication Date 2026-03-05
Owner NTT, Inc. (Japan)
Inventor
  • Kuriyama, Keita
  • Fukuzono, Hayato
  • Miyagi, Toshifumi
  • Onizawa, Takeshi

Abstract

A wireless communication method includes phase shift amount determination processing for determining a phase shift amount for each subcarrier of transmission data, modulation processing for modulating the transmission data and further shifting a phase according to the phase shift amount for each subcarrier, and precoding processing for performing precoding on the transmission data after the modulation processing. The transmission data after the precoding processing is transmitted from the transmission device to the reception device. A plurality of types of phase shift patterns prepared in advance define different phase shift amounts. The phase shift amount determination processing includes: selecting, from among the plurality of types of phase shift patterns, one that minimizes a PAPR of the transmission data after the precoding processing or one that maximizes a data reception quality in the reception device; and determining the phase shift amount for each subcarrier according to the selected phase shift pattern.

IPC Classes  ?

  • H04L 27/26 - Systems using multi-frequency codes
  • H04B 7/0456 - Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting

2.

Optical Waveguide

      
Application Number 19105282
Status Pending
Filing Date 2022-08-22
First Publication Date 2026-03-05
Owner NTT, Inc. (Japan)
Inventor
  • Suzuki, Kenya
  • Kurata, Yu
  • Yamaguchi, Keita

Abstract

Provided is an optical waveguide capable of suppressing optical loss in a groove portion into which a wavelength plate is inserted while eliminating polarization dependence. An optical waveguide according to the present disclosure is an embedded optical waveguide formed on a substrate, including a lower cladding; a core; an upper cladding; and a groove formed on one side of a side surface of the core with respect to a light propagation direction and extending in a direction parallel to the core, wherein a refractive index distribution in a plane perpendicular to the light propagation direction is a distribution in which a principal axis of a refractive index ellipse has a rotation amount with respect to a horizontal direction of the substrate.

IPC Classes  ?

  • G02B 6/122 - Basic optical elements, e.g. light-guiding paths

3.

MUTANT CREATION APPARATUS, METHOD, AND PROGRAM

      
Application Number 19105909
Status Pending
Filing Date 2022-08-25
First Publication Date 2026-03-05
Owner NTT, Inc. (Japan)
Inventor
  • Imamura, Sosuke
  • Takaya, Kazuhiro
  • Iwashita, Hidenori
  • Kiuchi, Ryu

Abstract

A mutant creation apparatus according to an embodiment includes: a mutation induction unit that irradiates an organism, or a target for creating a mutant, with a radiation or electromagnetic energy for inducing a mutation in a nucleotide sequence that causes a trait variation in the organism or introduces a chemical substance into the organism for inducing the mutation; a selection unit that selects a mutant having a desired trait from mutants of the organism obtained by the mutation induction unit; a nucleotide sequence analysis unit that analyzes a nucleotide sequence of the selected mutant; an identification unit that identifies a nucleotide sequence that provides the desired trait of the mutant in the analyzed nucleotide sequence; and a condition analysis unit that analyzes a condition under which a desired mutant of the organism is created by the mutation induction unit based on a result of identification.

IPC Classes  ?

  • C12N 15/01 - Preparation of mutants without inserting foreign genetic material thereinScreening processes therefor
  • C12M 1/42 - Apparatus for the treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic wave

4.

ITEM ANALYSIS DEVICE AND ITEM ANALYSIS METHOD

      
Application Number JP2024031518
Publication Number 2026/048071
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Taniguchi, Yuki
  • Tomita, Junji
  • Kurasawa, Hisashi
  • Shioda, Tetsuya
  • Kan, Rin

Abstract

This item analysis device comprises: an input unit that receives an action sequence composed of records including at least three elements, namely, a user attribute, a time, and an action label representing an action content; an action model unit that receives at least one action sequence as an input, converts said at least one action sequence into a sequence of vectors of an embedding representation in consideration of a time order by using a prescribed function, and outputs a score for each action label in consideration of a pattern of the sequence of the vectors; and a training unit that uses the action sequence converted into the vectors as training data to estimate a parameter of the action model unit by self-supervised training using the difference between each action label score and correct answer data as an error function, and outputs an estimated model parameter.

IPC Classes  ?

  • G06Q 30/0201 - Market modellingMarket analysisCollecting market data

5.

ADAPTOR

      
Application Number JP2024030424
Publication Number 2026/047836
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Sato, Rieko
  • Ishihara, Takako
  • Kuwabara, Kei
  • Kondo, Toshihiko

Abstract

An adaptor according to the present invention comprises: first and second electrode parts that come into contact with a living body; first and second connector parts for attaching a terminal for transmitting a measured biological signal; a flexible base material having elasticity, on which the first and second connector parts are disposed; an adhesive base material for putting the first and second electrode parts into close contact with the living body; and a reinforcing base material disposed between the flexible base material and the adhesive base material. The reinforcing base material is disposed in a first region in which the first connector part is disposed and that has a predetermined width in the direction in which the first and second connector parts are arranged, and in a second region in which the second connector part is disposed and that has a predetermined width in the direction in which the first and second connector parts are arranged. In a region between the first region and the second region, the reinforcing base material is not disposed, or the reinforcing base material has a porous structure.

IPC Classes  ?

  • A61B 5/274 - Connection of cords, cables or leads to electrodes using snap or button fasteners
  • A61B 5/257 - Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes

6.

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM

      
Application Number JP2024030438
Publication Number 2026/047842
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakamura, Mitsuki
  • Kawamura, Kenichi
  • Sasaki, Motoharu
  • Shibuya, Naoki
  • Ogawa, Tomoaki

Abstract

A communication device having directivity, the communication device comprising: a reception unit that receives radio waves from a base station, and stores an incoming wave direction and position information of the communication device in a database; and a processing unit that predicts the incoming wave direction from a handover destination base station for the communication device on the basis of past information acquired from the database, and controls the directivity of the communication device on the basis of a prediction result.

IPC Classes  ?

  • H04B 7/08 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
  • H04W 36/00 - Handoff or reselecting arrangements

7.

SECURE KEY EXTRACTION METHOD AND DEVICE FOR QUANTUM KEY DISTRIBUTION USING TIME BIN

      
Application Number JP2024031311
Publication Number 2026/048009
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kawakami Shun
  • Azuma Koji
  • Ikuta Takuya
  • Taniguchi Atsushi
  • Takesue Hiroki
  • Honjo Toshimori
  • Lo Hsinpin
  • Yonezu Yuya
  • Takasugi Koichi
  • Takahashi Hirokazu
  • Sanari Yasuyuki
  • Miura Momoko
  • Watanabe Mori

Abstract

Provided is a quantum key distribution device for performing secure key extraction in quantum key distribution using a time bin and a delay interferometer. Specifically, the present invention provides a quantum key distribution device that uses time and a phase difference as quantum information, and transmits the quantum information from a transmitting unit to a first receiving unit, the quantum key distribution device comprising the transmitting unit, which includes a light source, and the first receiving unit, wherein: the first receiving unit comprises an optical element that branches an optical pulse of a time bin from the transmitting unit, a delay interferometer that interferes with the optical pulse of the time bin, a plurality of photon detectors that detect the optical pulse, and a plurality of photon time measuring instruments that are respectively connected to the plurality of photon detectors and are configured to measure the detection time of the optical pulse of the time bin; and the quantum key distribution device decodes the quantum information using the detection time of the optical pulse of the time bin detected by the first receiving unit and the optical pulse output from the delay interferometer.

IPC Classes  ?

  • H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

8.

TRANSMISSION SYSTEM

      
Application Number JP2024030496
Publication Number 2026/047853
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Taguchi, Katsuhisa
  • Fukui, Tatsuya
  • Sakaue, Yuki
  • Tamaki, Shinya

Abstract

A transmission system 100 and a transmission method by the transmission system 100 according to the present disclosure simultaneously transmit pixel data corresponding to each of a plurality of pixels of an imaging unit 31 in parallel to a network 900, receive the pixel data from the network 900, and generate image data composed of at least some of the plurality of pixels from the received pixel data.

IPC Classes  ?

  • H04N 21/238 - Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidthProcessing of multiplex streams
  • H04L 13/00 - Details of the apparatus or circuits covered by groups or

9.

TRANSMISSION SYSTEM

      
Application Number JP2024030494
Publication Number 2026/047852
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Taguchi, Katsuhisa
  • Fukui, Tatsuya
  • Sakaue, Yuki
  • Tamaki, Shinya

Abstract

In a transmission system 100 and a transmission method used by the transmission system 100 according to the present disclosure, a camera control signal for controlling an imaging unit 31 is transmitted to a network 900, the imaging unit 31 images an imaging subject according to the camera control signal received from the network 900, and pixel data corresponding to each among a plurality of pixels of the imaging unit 31 is transmitted to the network 900.

IPC Classes  ?

  • H04N 21/239 - Interfacing the upstream path of the transmission network, e.g. prioritizing client requests
  • H04N 21/234 - Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
  • H04N 21/4223 - Cameras
  • H04N 23/60 - Control of cameras or camera modules

10.

RELAY SYSTEM AND RELAY METHOD

      
Application Number JP2024030269
Publication Number 2026/047806
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Demizu Tatsuya
  • Funatsu Gentaro
  • Kanazawa Toshiyuki
  • Namiki Masatoshi
  • Inoue Hiroki
  • Watanabe Masanari
  • Takeda Kenta

Abstract

A relay system 2 comprises: a conversion unit 122 that deletes the data of an item specified in advance from packet data PD received from a transmission terminal ET and converts the packet data PD into converted packet data PDE; a determination unit 222 that uses the characteristics of the converted packet data PDE as a basis to determine a path for transmitting the packet data PD from among a plurality of paths for transmitting the packet data PD to a reception terminal ER; and a transmission/reception unit 121 that receives the packet data PD from the transmission terminal ET and transmits the received packet data PD to the determined path.

IPC Classes  ?

11.

OPTICAL TRANSMISSION DESIGN DEVICE AND OPTICAL TRANSMISSION DESIGN SYSTEM

      
Application Number JP2024031357
Publication Number 2026/048020
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kotanigawa, Takashi
  • Suda, Sachio
  • Kuribara, Shusuke
  • Aoki, Yuna

Abstract

An optical transmission design device (100) disclosed herein comprises: a noise characteristic information acquisition unit (110) that acquires noise characteristic information of an optical transmission device; an OSNR deterioration amount calculation unit (120) that uses the noise characteristic information, acquired by the noise characteristic information acquisition unit (110), to calculate the amount of optical signal-to-noise ratio deterioration that occurs when an optical signal passes through the optical transmission device; a nonlinear waveform distortion calculation unit (130) that calculates the nonlinear waveform distortion of an optical transmission path; and a transmission reachability evaluation unit (140) that compares a value obtained by subtracting the nonlinear waveform distortion from the amount of optical signal-to-noise ratio deterioration calculated by the OSNR deterioration amount calculation unit (120) with the performance of a single optical transmission/reception device (30) to evaluate the transmission reachability of a wavelength multiplex transmission system (1000).

IPC Classes  ?

  • H04B 10/07 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems
  • H04J 14/02 - Wavelength-division multiplex systems

12.

CONTROLLER DEVICE, CONTROL METHOD, AND CONTROL PROGRAM

      
Application Number JP2024030276
Publication Number 2026/047809
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Watanabe, Masanari
  • Namiki, Masatoshi
  • Funatsu, Gentaro
  • Demizu, Tatsuya

Abstract

A calculation unit (12) calculates the total delay amount of each of a plurality of optical paths on the basis of an optical path delay amount, which is a delay amount corresponding to each of the plurality of optical paths, and a processing delay amount, which is a communication delay amount corresponding to each of the plurality of optical paths caused by processing in a communication termination device (30) that terminates the plurality of optical paths. In addition, the calculation unit (12) determines, from among the plurality of optical paths, an optical path to be assigned to communication of each of a plurality of communication services on the basis of communication requirements of the plurality of communication services and the total delay amount.

IPC Classes  ?

  • H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

13.

COMMUNICATION CONTROL DEVICE AND COMMUNICATION CONTROL METHOD

      
Application Number JP2024030275
Publication Number 2026/047808
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakano, Kanji
  • Irino, Hitoshi
  • Tsuchiya, Hideo
  • Kurita, Kaori
  • Sugisono, Koji

Abstract

A flow information table (106) stores information about a flow flowing to a first node in a network. If congestion is predicted at a second node through which the flow flows from the first node, a route control unit (105) distributes the flow flowing from the first node to the second node and one or more third nodes on the basis of the information in the flow information table (106).

IPC Classes  ?

  • H04L 47/127 - Avoiding congestionRecovering from congestion by using congestion prediction
  • H04L 47/125 - Avoiding congestionRecovering from congestion by balancing the load, e.g. traffic engineering

14.

COMMUNICATION QUALITY ESTIMATION SYSTEM, COMMUNICATION QUALITY ESTIMATION DEVICE, COMMUNICATION QUALITY ESTIMATION METHOD, AND COMMUNICATION QUALITY ESTIMATION PROGRAM

      
Application Number JP2024030271
Publication Number 2026/047807
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nagano, Kotaro
  • Kishida, Akira
  • Abeysekera, Hirantha
  • Asai, Yusuke
  • Ogawa, Tomoaki

Abstract

A communication quality estimation system according to one embodiment of the present invention estimates the communication quality at a terminal newly connecting to a base station, and is characterized by comprising: a storage unit in which relationship information, including the relationship between a total value of required data rates for the base station and an expected throughput that can be expected by a terminal newly connecting to the base station, is stored in advance; a collection unit for collecting required data rates of respective terminals; and an estimation unit for estimating the expected throughput that can be expected by a terminal newly connecting to the base station on the basis of a total value of the required data rates collected by the collection unit and the relationship information.

IPC Classes  ?

15.

COLLECTION DEVICE AND COLLECTION METHOD

      
Application Number JP2024030285
Publication Number 2026/047813
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Hirano Tatsuya
  • Ishimura Shohei
  • Fukuda Aki

Abstract

A collection device 1 comprises: a collection unit 10 that collects network information from devices constituting a network 8; an analysis unit 30 that analyzes the network information and generates control information necessary for load balancing of the network; a detection unit 41 that detects a sign of congestion of the network on the basis of the network information; and a control unit 50 that transmits the control information to a controller 7 that controls the devices to perform the load balancing. The collection unit 10 collects the network information from only spine switches among the devices constituting the network 8.

IPC Classes  ?

  • H04L 43/022 - Capturing of monitoring data by sampling

16.

INFORMATION PROCESSING DEVICE AND METHOD

      
Application Number JP2024030296
Publication Number 2026/047817
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Ogawa, Manami
  • Akashi, Kazuaki
  • Matsubayashi, Hiroaki
  • Kobayashi, Masashi
  • Yamazoe, Mayu

Abstract

An information processing device according to one embodiment of the present invention comprises: an acquisition unit that acquires, from among a plurality of entities stored in a first database and classified into a group to be subjected to entity resolution from among a plurality of groups obtained by classifying a plurality of entities in the first database and a second database, a first adjacent entity representing an item having an adjacent relationship with an item represented by an entity to be subjected to entity resolution, and acquires, for each of the plurality of entities classified into the group to be subjected to entity resolution and stored in the second database, a second adjacent entity representing an item having an adjacent relationship with the item representing said entity; and a determination unit that determines the degree of similarity between the second adjacent entity and the first adjacent entity to thereby determine the second adjacent entity from among the second adjacent entities that is most similar to the first adjacent entity, and determines that the entity to be subjected to entity resolution and an entity that represents an item having an adjacent relationship with the item represented by the second adjacent entity, and that is classified into a group to be subjected to the entity resolution and is stored in the second database, are entities representing the same item.

IPC Classes  ?

  • G06F 16/215 - Improving data qualityData cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors

17.

NETWORK MANAGEMENT DEVICE AND METHOD

      
Application Number JP2024030293
Publication Number 2026/047815
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Matsubayashi, Hiroaki
  • Kobayashi, Masashi
  • Akashi, Kazuaki
  • Yamazoe, Mayu
  • Ogawa, Manami

Abstract

A network management device according to one embodiment comprises: an extraction unit that, when a failure has occurred in a predetermined section of a route in a network configuration, extracts a failure influence range in the network configuration due to the occurrence of the failure in the route, and extracts candidates for a detour of a route related to provision of a service using the network configuration in a range limited to the extracted failure influence range; and an output unit that, on the basis of a rule in which an appropriate route is determined as the detour when the predetermined section is included in the route in which the failure has occurred, specifies and outputs an appropriate route as the detour among the candidates extracted by the extraction unit.

IPC Classes  ?

  • H04L 41/0654 - Management of faults, events, alarms or notifications using network fault recovery

18.

NETWORK DESIGN DEVICE, NETWORK DESIGN METHOD, AND PROGRAM

      
Application Number JP2024030821
Publication Number 2026/047924
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Matsubayashi, Hiroaki
  • Akashi, Kazuaki
  • Kobayashi, Masashi
  • Yamazoe, Mayu
  • Ogawa, Manami

Abstract

A network design device according to one aspect of the present invention designs a network that can be abstracted to a hierarchical structure from a physical layer to a service layer via an intermediate layer. The network design device comprises a resource management unit, an order processing unit, a calculation unit, and a human resource operation management unit. The resource management unit manages construction characteristics including at least a resource adjustment overhead, a design period, a construction period, a lead time, and a life cycle cost in each layer of the hierarchical structure. The order processing unit extracts, from an order given by designating end-to-end resources and routes of a service layer, insufficient resources at locations exceeding capacity due to the addition of routes. The calculation unit combines the extracted insufficient resources and sequentially calculates processes required for network construction on the basis of construction characteristics for each layer. The human resource operation management unit allocates human resources corresponding to the calculated processes and calculates a construction period required for network construction.

IPC Classes  ?

  • H04L 41/04 - Network management architectures or arrangements

19.

COMMUNICATION TERMINAL, WIRELESS COMMUNICATION SYSTEM, WIRELESS QUALITY PREDICTION METHOD, AND PROGRAM

      
Application Number JP2024030789
Publication Number 2026/047917
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakamura, Mitsuki
  • Kawamura, Kenichi
  • Sasaki, Motoharu
  • Shibuya, Naoki
  • Ogawa, Tomoaki

Abstract

This communication terminal performs wireless communication with one or more base stations, and includes: a performance value management unit that registers, in a database, performance values including the wireless quality of the wireless communication and the state of carrier aggregation (CA); a CA prediction unit that predicts a handover destination base station and the state of CA in the handover destination base station on the basis of the performance values registered in the database by a plurality of the communication terminals; and a wireless quality prediction unit that predicts the wireless quality at the time of handover to the handover destination base station on the basis of the performance values registered in the database and a result of the prediction by the CA prediction unit, and outputs the predicted wireless quality to a predetermined output destination.

IPC Classes  ?

  • H04W 36/30 - Reselection being triggered by specific parameters by measured or perceived connection quality data
  • H04W 24/02 - Arrangements for optimising operational condition
  • H04W 72/0457 - Variable allocation of band or rate

20.

INFORMATION PROCESSING METHOD AND INFORMATION PROCESSING PROGRAM

      
Application Number JP2024031407
Publication Number 2026/048039
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kodama, Daiki
  • Shimizu, Shinya
  • Takayama, Chihiro

Abstract

This information processing device receives an input of a gain table indicating the extent to which a cooperation task consisting of a combination of actions is performed, such input received for each of the combination patterns of the actions that can be taken by each performer in the cooperation task. Thereafter, the information processing device excludes, from the input gain table, an action that has no possibility of improving the performance of the cooperation task (first exclusion step). Next, the information processing device excludes, from the gain table resulting from the execution of the first exclusion step, patterns in which there is only one combination of the actions that improves the performance of the cooperation task (second exclusion step). Subsequently, if there are patterns with similar combinations of the actions in the gain table resulting from the execution of the second exclusion step, the information processing device excludes one of the patterns among the patterns with similar combinations of the actions (third exclusion step). Consequently, the information processing device outputs the combinations of actions remaining in the gain table after the execution of the third exclusion step.

IPC Classes  ?

  • G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
  • G06N 99/00 - Subject matter not provided for in other groups of this subclass

21.

WIRELESS COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, WIRELESS COMMUNICATION METHOD, AND PROGRAM

      
Application Number JP2024030795
Publication Number 2026/047919
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakamura, Mitsuki
  • Kawamura, Kenichi
  • Sasaki, Motoharu
  • Shibuya, Naoki
  • Ogawa, Tomoaki

Abstract

This wireless communication system including a communication terminal for performing wireless communication with one or more base stations comprises: an actual-values management unit that registers, in a database, actual values including the wireless quality at the time of a handover at the communication terminal; an HO prediction unit that predicts the occurrence of a handover at the communication terminal; a wireless quality prediction unit that predicts, on the basis of the actual values registered in the database from one or more terminals, the wireless quality of the communication terminal after the handover has occurred; and a traffic control unit that, on the basis of the prediction result from the HO prediction unit and the prediction result from the wireless quality prediction unit, controls the traffic of the wireless communication before the handover occurs.

IPC Classes  ?

22.

COATING FILM LAMINATE, INSPECTION METHOD, AND INSPECTION DEVICE

      
Application Number JP2024030552
Publication Number 2026/047867
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Makino Ryo
  • Tamamatsu Junichiro
  • Kobayashi Daiki
  • Ishii Azusa

Abstract

A coating film laminate (10) comprises: a scattering coating material (15) (first coating material) for scattering electromagnetic waves in a specific band; and an absorbing coating material (16) (second coating material) for absorbing electromagnetic waves in the specific band, and is disposed on the surface of an outdoor structure (11). The coating film laminate (10) is capable of inspecting coating deterioration on the basis of a predetermined pattern included in an image obtained by capturing reflected microwaves from microwaves emitted from a satellite (20).

IPC Classes  ?

  • G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

23.

OPTICAL CROSS-CONNECT DEVICE

      
Application Number JP2024030329
Publication Number 2026/047821
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Date, Hiroki
  • Nobe, Makoto
  • Suzuki, Shota
  • Shimazaki, Daisaku

Abstract

An optical cross-connect device (100) comprises: a plurality of routing units (20) connected to an optical transmission line; and a plurality of multiplexing/demultiplexing units (30) connected to the plurality of routing units (20) and accommodating transponders, wherein each of the multiplexing/demultiplexing units (30) accommodates only a user transponder (40) having the same predetermined use when resetting a path, and is connected only to the routing unit (20) required for the use. The optical cross-connect device (100) comprises: a multiplexing/demultiplexing management information DB (120) for storing the assignment between each of the multiplexing/demultiplexing units (30) and routing units (20) and the accommodated wavelength status as a multiplexing/demultiplexing management table (200); and a multiplexing/demultiplexing unit management unit (110) for selecting a multiplexing/demultiplexing unit (30), in which a transponder is to be accommodated on the basis of requirements of a service provided to a user when accommodating the transponder, on the basis of the multiplexing/demultiplexing management table (200), and assigning and connecting the selected multiplexing/demultiplexing unit (30) only to the routing unit (20) that requires the multiplexing/demultiplexing unit (30).

IPC Classes  ?

24.

HEAT-RESISTANT STRUCTURE

      
Application Number JP2024030334
Publication Number 2026/047823
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tashiro Yoshihiko
  • Izumi Toshimitsu
  • Watanabe Hidetaka

Abstract

A heat-resistant structure (1) that is to be provided in a conduit (P) that accommodates a power cable (C) comprises: a heat insulation part (11) that is provided along an inner wall of the conduit (P) and suppresses transmission of heat from the power cable (C) to the inner wall; and a heat dissipation part (12) that is provided to an outer surface of the power cable (C) and transmits heat into the air.

IPC Classes  ?

  • H02G 9/06 - Installations of electric cables or lines in or on the ground or water in underground tubes or conduitsTubes or conduits therefor
  • H02G 9/10 - Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole

25.

PROCESSING DEVICE AND PROCESSING METHOD

      
Application Number JP2024031441
Publication Number 2026/048046
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Aoyagi Kenichi
  • Aoki Yuna
  • Takamoto Wataru
  • Suda Sachio

Abstract

In an optical communication network APN provided with a plurality of nodes N and a plurality of fibers F connecting pairs of the nodes N, a processing device 1 is provided with: a storage device that stores configuration data 11 specifying the order of the plurality of nodes N connected by the fibers F, and a specific node from among the plurality of nodes N that is a conversion node for converting wavelengths, and wavelength data 12 specifying wavelengths available in fibers F connecting pairs of adjacent nodes; an acquisition unit 21 that acquires an identifier of a start node NS and an identifier of an end node NT of a newly established optical path; and a selection unit 22 that, by referencing to the configuration data 11 and the wavelength data 12, selects a wavelength available in a section from the start node NS to the conversion node and unavailable in an adjacent section on the opposite side of the conversion node with respect to the start node NS.

IPC Classes  ?

26.

CALCULATION DEVICE

      
Application Number JP2024031451
Publication Number 2026/048049
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Shimazu Satoshi
  • Sekiguchi Masayoshi
  • Yamaoka Suguru
  • Sakai Yoshihito
  • Yoshida Tomoaki

Abstract

Provided is a calculation device that calculates a buffer amount for each queue in a communication device that performs priority control using a plurality of queues, the calculation device comprising: a first buffer calculation unit that calculates a buffer amount for each queue using a first buffer calculation method on the basis of the number of users who use a service and usage information of the service used by the users; a second buffer calculation unit that calculates a buffer amount for each queue using a second buffer calculation method, which is a calculation method different from the first buffer calculation method, on the basis of the number of users who use the service and the usage information of the service used by the users; and a buffer amount determination unit that determines a buffer amount to be set for a buffer of each queue of the communication device on the basis of the buffer amount for each queue calculated by the first buffer calculation unit and the buffer amount for each queue calculated by the second buffer calculation unit.

IPC Classes  ?

  • H04L 47/6275 - Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority

27.

OPTICAL RECEIVER, TRANSMISSION SYSTEM, AND COMPENSATION METHOD

      
Application Number JP2024031229
Publication Number 2026/047986
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kawai Akira
  • Shibahara Koki
  • Nakamura Masanori
  • Kobayashi Takayuki
  • Hoshi Megumi
  • Miyamoto Yutaka

Abstract

This optical receiver comprises a signal equalization unit that compensates for signal waveform distortion using a filter in which a filter coefficient is set so as to compensate for crosstalk in which the amount of crosstalk between IQ lanes is equal to or greater than a threshold value, with respect to a multiplexed signal transmitted from an optical transmitter. 

IPC Classes  ?

28.

BASE STATION, TERMINAL DEVICE, AND COMMUNICATION METHOD

      
Application Number JP2024031460
Publication Number 2026/048051
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamamoto Hiroto
  • Uchida Daisei
  • Miyagi Toshifumi

Abstract

This base station comprises: a scheduling adjustment unit that adjusts the schedule of a combination of antenna devices that perform transmission and reception at the same time among a plurality of antenna devices arranged dispersedly such that the combination suppresses interference which occurs between an uplink and a downlink and includes self-interference; and a control unit that controls the operation of each antenna device on the basis of the result of the adjustment by the scheduling adjustment unit. 

IPC Classes  ?

29.

OPTICAL SWITCH, OPTICAL CROSS-CONNECT, AND SWITCHING SYSTEM

      
Application Number JP2024031006
Publication Number 2026/047947
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Watanabe Hiroshi
  • Fukai Chisato
  • Ogushi Ikutaro
  • Katayama Kazunori

Abstract

The present invention increases the number of simultaneously usable optical paths among optical paths formed between a plurality of optical switches, and improves the utilization efficiency of the entire facility. This optical switch (SW) comprises a plurality of input ports (Q1 to Q3) and a plurality of output ports (P1 to P3). The plurality of input ports are disposed at equal intervals around a rotation axis (AS) and the plurality of output ports are disposed at equal intervals around the rotation axis. Combinations of connections between the input ports and the output ports are switched by rotation around the rotation axis. The plurality of input ports and the plurality of output ports are simultaneously connected and an optical signal propagates between the connected input ports and output ports.

IPC Classes  ?

  • G02B 6/35 - Optical coupling means having switching means
  • H04Q 3/52 - Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements

30.

NETWORK TERMINATION DEVICE

      
Application Number JP2024030153
Publication Number 2026/047788
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Takahashi, Kotomi
  • Irino, Hitoshi
  • Kawano, Shinya
  • Homma, Shunsuke
  • Sakabe, Takumi
  • Aoki, Yoshiki

Abstract

A VxLAN termination device (200) comprises: a detection unit (231) that detects a trigger such as a link-up of a network terminal (300); a CPU (230) in which a cache container (232) operates, the cache container having cached therein installation materials for network terminals stored in a ZTP server (110); and a monitoring unit (221) that, when the trigger is detected, starts monitoring a DHCP Offer (510) that notifies the network terminal of the address of the ZTP server. The CPU changes the routing setting on the basis of the DHCP Offer so that traffic requesting an installation material from the network terminal is directed to the cache container.

IPC Classes  ?

  • H04L 67/10 - Protocols in which an application is distributed across nodes in the network

31.

FILTERING DEVICE AND FILTERING METHOD

      
Application Number JP2024030151
Publication Number 2026/047787
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kuribara, Shusuke
  • Suda, Sachio
  • Aoki, Yuna
  • Takamoto, Wataru

Abstract

An L2 switch (30) has: a recording unit (322) that records first collation data included in a main signal transmitted from a random number remote TP (20R); and a comparison unit (321) that discards an OSC signal received from the random number remote TP (20R) when the first collation data recorded in the recording unit (322) does not coincide with second collation data included in the received OSC signal. When the first collation data coincide with the second collation data, the comparison unit (321) allows the received OSC signal to pass and successfully authenticates the random number remote TP (20R) which has transmitted the OSC signal.

IPC Classes  ?

  • H04L 12/22 - Arrangements for preventing the taking of data from a data transmission channel without authorisation

32.

COMMUNICATION DEVICE, COMMUNICATION METHOD, AND PROGRAM

      
Application Number JP2024031016
Publication Number 2026/047949
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakamura, Mitsuki
  • Kawamura, Kenichi
  • Sasaki, Motoharu
  • Shibuya, Naoki
  • Ogawa, Tomoaki

Abstract

The present disclosure relates to a communication device that performs radio communication with a base station, the communication device comprising: a communication unit that transmits, to a specific server, actual measured values including identification information of a base station with which the communication device is communicating and radio quality information indicating the radio quality during communication; a handover destination predicting unit that predicts a specific base station as a handover destination on the basis of the actual measured values for the radio communication with the base station with which the communication device is communicating and the actual measured values for a handover destination candidate acquired from the specific server; a radio quality predicting unit that, on the basis of the measured values for a given communication device in the specific base station of the handover destination, acquired from the specific server, and the actual measured values for the communication device in the base station with which the communication device is communicating, predicts a change in radio quality due to the handover, and thereby outputs a predicted value relating to radio quality; and a predicted value correcting unit that corrects the predicted value by using specific actual measured values based on the actual measured values for the given communication device in the specific base station.

IPC Classes  ?

  • H04W 36/30 - Reselection being triggered by specific parameters by measured or perceived connection quality data
  • H04W 36/36 - Reselection control by user or terminal equipment

33.

INFORMATION PROCESSING DEVICE AND METHOD

      
Application Number JP2024031493
Publication Number 2026/048064
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Akashi, Kazuaki
  • Ogawa, Manami
  • Yamazoe, Mayu
  • Kobayashi, Masashi
  • Matsubayashi, Hiroaki

Abstract

An information processing device according to one embodiment has an extraction unit that extracts candidate information that is a single item of data that is stored at a first database and a plurality of candidates for data that is stored at a second database that represents the same matters as the single item of data that is stored at the first database and a determination unit that generates a query that asks which of the plurality of candidates is data that represents the same matters as the single item of data that is stored at the first database on the basis of the information extracted by the extraction unit, inputs the query into a model, and determines which of the plurality of candidates is data that represents the same matters as the single item of data that is stored at the first database on the basis of a response to the query that is outputted from the model.

IPC Classes  ?

  • G06F 16/21 - Design, administration or maintenance of databases
  • G06F 16/215 - Improving data qualityData cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors
  • G06F 16/2455 - Query execution

34.

SOFTWARE TEST DEVICE AND SOFTWARE TEST METHOD

      
Application Number JP2024031250
Publication Number 2026/047993
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamada, Kyohei
  • Shiraga, Akinori
  • Kitano, Takehiro
  • Nakashima, Tomoki

Abstract

A software test device (100) comprises a CPU (101), an auxiliary storage device (103) that stores the original of software to be tested, and a main storage device (102) that stores an implementation binary (220) copied from the original. When testing the copied implementation binary, for some or all of the functions called by some or all of the functions or features implemented as features to be tested in the copied implementation binary, the CPU dynamically changes a function return value, or a value passed via an argument, to a specified value, regardless of the processing content, without modifying the original implementation binary (210).

IPC Classes  ?

  • G06F 11/36 - Prevention of errors by analysis, debugging or testing of software

35.

WORK PLACEMENT ASSISTANCE DEVICE AND PROGRAM

      
Application Number JP2024031022
Publication Number 2026/047951
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor Takahashi, Gengo

Abstract

An embodiment of the present invention comprises: a first processing unit that generates, on the basis of task history information of a plurality of employees, work flow information in which a plurality of task items are arranged according to a task procedure; a second processing unit that estimates, for each of the plurality of employees, a representative work procedure of the employee in the work flow on the basis of a task execution frequency of the employee; a third processing unit that presents, for a general employee from among the plurality of employees whose assigned work scope is within a prescribed scope, first work scope confirmation information which clearly indicates a representative work procedure of the general employee on the work flow, and that acquires information indicating a first acknowledged work scope designated by the employee with respect to the presented first work scope confirmation information; and a fourth processing unit that presents, to the general employee, survey information corresponding to the first acknowledged work scope, and that acquires the response results of the general employee to the task items included in the first acknowledged work scope.

IPC Classes  ?

36.

SPATIAL POWER TRANSMISSION SYSTEM

      
Application Number JP2024031270
Publication Number 2026/047998
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

According to the present invention, a controller is connected to a power transmission device that spatially transmits power to a power reception device. The power reception device is a device that accumulates power and transmits data when the accumulated power reaches a threshold power. The controller sequentially switches an area supplied with power from the power transmission device, and determines the position of the power reception device on the basis of a change in data transmission from the power reception device accompanying the switching.

IPC Classes  ?

  • H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

37.

SPATIAL POWER TRANSFER SYSTEM

      
Application Number JP2024031299
Publication Number 2026/048006
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

The present disclosure is a controller connected to a wireless communication device that communicates with a power reception device and supplies power to the power reception device, and connected to a power transmission device that spatially transfers power to the power reception device. When radio waves from the wireless communication device are used for communication, the controller uses a frequency having little interference with the radio waves used for communication as a frequency used for the supply of power by the wireless communication device and the power transmission device.

IPC Classes  ?

  • H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves

38.

SPATIAL POWER TRANSMISSION SYSTEM

      
Application Number JP2024031294
Publication Number 2026/048004
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

The present disclosure is a controller connected to a wireless communication device that communicates with a power reception device and supplies power to the power reception device, and a power transmission device that spatially transmits higher power than the wireless communication device to the power reception device. A power supply area of the power transmission device overlaps at least a part of a communication area of the wireless communication device. The controller determines a power reception device that needs to be supplied with power, uses, for the power transmission device, a resonance frequency having high power reception efficiency for the power reception device that needs to be supplied with power when the power reception device that needs to be supplied with power is located in the power supply area, and uses, for the wireless communication device, a resonance frequency having high power reception efficiency for the power reception device that needs to be supplied with power when the power reception device that needs to be supplied with power is outside the power supply area and inside the communication area.

IPC Classes  ?

  • H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
  • H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
  • H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices

39.

SEMICONDUCTOR LASER

      
Application Number JP2024030913
Publication Number 2026/047933
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Shindo, Takahiko
  • Ueda, Yuta
  • Shimokozono, Makoto

Abstract

This semiconductor laser (10) is a distributed-reflector semiconductor laser including: an active region (11) having optical gain in a direction in which light is waveguided; and a DBR region (12) having a diffraction grating. A carrier plasma DBR region includes, in the order given, an n-type semiconductor cladding layer (101), a carrier plasma diffraction grating (120), a core layer (121) in which carrier plasma light is waveguided, and a p-type semiconductor cladding layer (102). Due to this configuration, the present invention can provide a semiconductor laser that has reduced optical loss and can operate at a low threshold value and high output.

IPC Classes  ?

  • H01S 5/125 - Distributed Bragg reflector [DBR] lasers

40.

FIBER ARRAY AND METHOD FOR MANUFACTURING SAME

      
Application Number JP2024030912
Publication Number 2026/047932
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Sato, Norio
  • Saito, Yohei
  • Miura, Toru

Abstract

This fiber array (10) comprises an optical chip (110), a fiber (100), and a lid (120), the optical chip being provided with a substrate (115), a waveguide (112) disposed on one surface of the substrate, and a V-groove (111) disposed on one surface of the substrate, the tip of the fiber being disposed in the V-groove so that the core of the fiber and the waveguide are optically connected, and a portion of the lid being disposed so as to cover at least the tip of the fiber. Thus, the present invention can provide a fiber array in which a fiber and a waveguide of an optical chip can be optically connected with high accuracy.

IPC Classes  ?

  • G02B 6/30 - Optical coupling means for use between fibre and thin-film device
  • G02B 6/24 - Coupling light guides

41.

WAVELENGTH-TUNABLE LASER DIODE, CONTROL METHOD FOR WAVELENGTH-TUNABLE LASER DIODE, AND CONTROL PROGRAM FOR WAVELENGTH-TUNABLE LASER DIODE

      
Application Number JP2025030575
Publication Number 2026/049015
Status In Force
Filing Date 2025-08-29
Publication Date 2026-03-05
Owner
  • NTT INNOVATIVE DEVICES CORPORATION (Japan)
  • NTT, INC. (Japan)
Inventor
  • Mawatari Hiroyasu
  • Ueda Yuta

Abstract

Provided is a wavelength-tunable laser diode capable of stabilizing the oscillation wavelength against fluctuations in optical output without relying on temperature control. An MMI (12) having an M×N port configuration, N reflective delay line arrays (13) connected to the N port side of the MMI (12), and an optical gain region (11) that is provided on at least one port on the M port side and amplifies light are integrated on the same substrate. The wavelength-tunable laser diode comprises: a wavelength adjustment electrode group (18) that applies a voltage to the reflective delay line arrays (13) to adjust the wavelength of oscillation light that is output from the optical gain region (11); a photocurrent detection electrode group (28) that detects a photocurrent generated from the reflective delay line arrays (13) to which the voltage has been applied by the wavelength adjustment electrode group (18); and a control circuit (16) that controls the wavelength of the oscillation light on the basis of the voltage applied by the photocurrent detection electrode group (28) and the current detected by the photocurrent detection electrode group (28).

IPC Classes  ?

  • H01S 5/0687 - Stabilising the frequency of the laser
  • G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
  • G02B 6/125 - Bends, branchings or intersections
  • H01S 5/026 - Monolithically integrated components, e.g. waveguides, monitoring photo-detectors or drivers
  • H01S 5/14 - External cavity lasers

42.

SERVICE PROVISION SYSTEM, SERVICE PROVISION METHOD, ENCLAVE PROGRAM, AND USER PROGRAM

      
Application Number JP2024030721
Publication Number 2026/047891
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Higo Naoki
  • Matsumoto Arifumi

Abstract

A service provision system (10) for providing a user system (30) with a service utilizing a container (28) executed in a cloud system (20) is provided with a memory (12), hardware (13), and an interface (14). The hardware (13), by running an enclave program (17) in a reliable execution environment constructed in the memory (12): generates an authentication key for authenticating the container (28); generates a measurement value related to a program group including the enclave program (17) as a measurement value to be collated by the user system (30); verifies, by using a public certification system (60), that measurement values related to a container image and to a program group including a program for executing the container (28) have been published; and generates an electronic signature for the authentication key and the measurement value. The interface (14) provides the user system (30) with the authentication key, the measurement value, and the electronic signature.

IPC Classes  ?

  • G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules

43.

COMMUNICATION CONTROL SYSTEM

      
Application Number JP2024030975
Publication Number 2026/047938
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tsuboi Hideyuki
  • Toshinaga Hideki
  • Miyagi Toshifumi

Abstract

A communication control system according to the present invention has at least three wireless base station devices and a communication control device that controls the switching of communication connections between the wireless base station devices and terminal devices. The communication control device has: a detection unit that detects that a terminal device that is communicatively connected to a first wireless base station device and a second wireless base station device and is moving away from the first wireless base station device while approaching a third wireless base station device has entered a prescribed range that is within an area in which communication with both the first wireless base station device and the third wireless base station device is possible; and a switching control unit that, when it has been detected that the terminal device has entered the prescribed range, performs control that establishes a communication connection between the terminal device and the third wireless base station and then ends the communication connection between the terminal device and the first wireless base station device. The prescribed range is set on the basis of the communication environment between the first wireless base station device and another device in the vicinity of a movement path and the communication environment between the third wireless base station device and the other device in the vicinity of the movement path.

IPC Classes  ?

  • H04W 36/28 - Reselection being triggered by specific parameters by agreed or negotiated communication parameters involving a plurality of connections, e.g. multi-call or multi-bearer connections
  • H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
  • H04W 36/38 - Reselection control by fixed network equipment
  • H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
  • H04W 76/15 - Setup of multiple wireless link connections

44.

SWITCHING CONTROL DEVICE AND SWITCHING METHOD

      
Application Number JP2024030747
Publication Number 2026/047899
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Ujikawa Hirotaka
  • Okamoto Yuka
  • Shimada Tatsuya

Abstract

A switching control device comprising: a switching timing determination unit for acquiring period information including information pertaining to a plurality of free periods in which data transmission is not performed for at least first data and second data that are transmitted at different intervals within a specific cycle, and determining, on the basis of the acquired period information, a free period that satisfies a switching condition; and a switching instruction unit that instructs an optical switching device to perform route switching between optical signal transmission sections so that a route is switched within the free period determined by the switching timing determination unit. 

IPC Classes  ?

  • H04L 45/243 - Multipath using M+N parallel active paths

45.

NONLINEAR MICROWAVE RESONATOR, JOSEPHSON DEVICE, AND METHOD FOR MANUFACTURING NONLINEAR MICROWAVE RESONATOR

      
Application Number JP2024030988
Publication Number 2026/047941
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Toida, Hiraku
  • Kakuyanagi, Kosuke
  • Saito, Shiro

Abstract

A nonlinear microwave resonator (10) comprises an NbN/AlN/NbN structure in which an NbN thin film is used for a lower layer electrode (2) and an upper layer electrode (4), and in which an AlN thin film is used for a dielectric film (3) that is provided between the lower layer electrode and the upper layer electrode. This structure constitutes a Josephson junction that is formed by using the NbN thin film as a superconductor and the AlN thin film as the dielectric film (3), and the structure functions as a Josephson element (10b). In addition, the structure constitutes a capacitor (10a) that has NbN as an electrode and AlN as a dielectric film (insulating layer), and functions as the nonlinear microwave resonator (10).

IPC Classes  ?

  • H03H 5/02 - One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements
  • H01P 7/08 - Strip line resonators
  • H03H 3/00 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
  • H03H 7/01 - Frequency selective two-port networks

46.

OPTICAL MODULATOR

      
Application Number JP2024030753
Publication Number 2026/047901
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tei, Gensai
  • Shindo, Takahiko
  • Kobayashi, Wataru

Abstract

This optical modulator includes a light absorbing layer (102) formed on a substrate (101). The light absorbing layer (102) is formed in a core shape extending in a predetermined direction on the substrate (101). The light absorbing layer (102) has a multiple quantum well structure made of a compound semiconductor. The multiple quantum well structure of the light absorbing layer (102) gradually changes such that the photoluminescence wavelength of the light absorbing layer (102) gradually increases from the light incident side toward the light emission side. The spacing between the photoluminescence wavelength on the light incident side and that on the light emission side of the light absorbing layer (102) can be 10 nm or more.

IPC Classes  ?

  • G02F 1/017 - Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells

47.

CONNECTOR FOR OPTICAL CONNECTOR INSPECTION AND OPTICAL CONNECTOR INSPECTION METHOD

      
Application Number JP2024030510
Publication Number 2026/047859
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Koyama Ryo
  • Fukai Chisato
  • Ogushi Ikutaro

Abstract

A connector (10) for optical connector inspection is provided with: an optical fiber (1); a ferrule (11) which holds the optical fiber (1) and has an end face (15) from which an end part (3) of the optical fiber (1) is exposed; an optically transparent spacer (20) which is provided to the end face (15); and a light-shielding mask (30) which is provided on the spacer (20) and has a mask hole (31) at a position at which a portion of test light, which is emitted from the end part (3) of the optical fiber (1) and passes through the spacer (20), reaches.

IPC Classes  ?

48.

CRYSTAL GROWING METHOD

      
Application Number JP2024030768
Publication Number 2026/047906
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Inaba, Tomohiro
  • Xu, Xuejun
  • Sanada, Haruki

Abstract

A columnar Si pattern (102) is formed on a substrate (111) by patterning an Si layer (101), and a rare earth oxide layer (103) composed of a rare earth oxide is grown in crystal on the Si pattern (102). A buffer layer (104) configured from a rare earth oxide different from that of the rare earth oxide layer (103) is grown in crystal on the Si pattern (102), and a rare earth oxide layer (103) is grown in crystal on the buffer layer (104). Furthermore, before an erbium-added rare earth oxide layer (103) is grown in crystal on the buffer layer (104), a no-additive layer (105) configured from only the rare earth oxide constituting the rare earth oxide layer (103) is grown in crystal on the buffer layer (104), and then the rare earth oxide layer (103) is grown in crystal on the no-additive layer (105).

IPC Classes  ?

  • C30B 29/16 - Oxides
  • G02B 1/02 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of crystals, e.g. rock-salt, semiconductors
  • G02F 3/00 - Optical logic elementsOptical bistable devices

49.

OPTICAL CONNECTION STRUCTURE

      
Application Number JP2024030762
Publication Number 2026/047903
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Miura, Toru
  • Sato, Norio
  • Tanaka, Takuya
  • Saito, Yohei

Abstract

In the present invention, a first surface (100a) of a first chip (100) and a second surface (120a) of a second chip (120) are joined so as to face each other, and a first core (101) exposed at the first surface (100a) of the first chip (100) and a second core (121) exposed at the second surface (120a) of the second chip (120) are disposed so as to overlap in a waveguide direction. The first surface (100a) and the second surface (120a) are joined by solder (111) in a joining region other than an optical connection region.

IPC Classes  ?

  • G02B 6/42 - Coupling light guides with opto-electronic elements
  • G02B 6/122 - Basic optical elements, e.g. light-guiding paths

50.

WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, BASE STATION, AND CONTROL PROGRAM

      
Application Number 18718206
Status Pending
Filing Date 2021-12-16
First Publication Date 2026-03-05
Owner NTT, Inc. (Japan)
Inventor
  • Omiya, Riku
  • Iwatani, Junichi
  • Kishida, Akira
  • Otsuki, Shinya
  • Asai, Yusuke
  • Ogawa, Tomoaki
  • Takatori, Yasushi

Abstract

A wireless communication system according to an embodiment includes: a number-of-times measurement circuitry configured to measure the number of retries in which a first wireless terminal tries to perform communication in conformity with a first communication scheme; and a control circuitry configured to perform control such that the first wireless terminal performs wireless communication with a base station using a second communication scheme without using the first communication scheme until a predetermined time passes when the number of retries measured by the number-of-times measurement circuitry exceeds a preset number of retries less than a predetermined number of retries in which the second wireless terminal tries to perform communication in conformity with the first communication scheme.

IPC Classes  ?

  • H04L 5/00 - Arrangements affording multiple use of the transmission path
  • H04W 84/12 - WLAN [Wireless Local Area Networks]

51.

OPTIMIZING APPARATUS, OPTIMIZING METHOD, AND OPTIMIZING PROGRAM

      
Application Number 19105823
Status Pending
Filing Date 2022-08-26
First Publication Date 2026-03-05
Owner NTT, Inc. (Japan)
Inventor
  • Hikima, Yuya
  • Akagi, Yasunori
  • Kin, Hideaki
  • Asami, Taichi
  • Toda, Hiroyuki

Abstract

A optimizing apparatus capable of solving an online matching problem according to an embodiment includes: circuitry configured to acquire input data including information regarding the node, a remaining amount given to a fixed node among nodes, the appearance probability given to an appearance node among the nodes, and a reward given to each edge when matching is performed, perform formulation to a first optimization problem based on the input data, determine whether or not all of the appearance nodes satisfy a predetermined assumption, perform transformation into a second optimization problem capable of obtaining an approximate solution that is a variable that controls a weight of each node and the appearance probability in the first optimization problem and a matching strategy in a case where the predetermined assumption is satisfied, obtain the approximate solution by solving the second optimization problem, and output the approximate solution.

IPC Classes  ?

  • G06F 17/11 - Complex mathematical operations for solving equations

52.

INFORMATION PROCESSING DEVICE AND PROGRAM

      
Application Number JP2024031519
Publication Number 2026/048072
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Isoda, Akira
  • Tomita, Junji
  • Hikichi, Takafumi
  • Hirano, Yasuhiro
  • Toyoshima, Shiori
  • Baba, Toshihiro
  • Hanakago, Yasushi
  • Okumura, Kazuki

Abstract

This information processing device comprises: an acquisition unit that acquires transaction-desired item information relating to a transaction-desired item; and a selection unit that selects a substitute-item candidate for the transaction-desired item from among a plurality of substitute-item candidates, on the basis of, for each of the plurality of substitute-item candidates, the inventory status of the substitute-item candidate and a substitute-item function corresponding to at least one of an item-dependent coefficient corresponding to the difference between the transaction-desired item and the substitute-item candidate and an event-dependent coefficient corresponding to transaction information relating to the transaction-desired item.

IPC Classes  ?

  • G06Q 30/06 - Buying, selling or leasing transactions

53.

OPTICAL DEVICE

      
Application Number JP2024030429
Publication Number 2026/047839
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor Nishi, Hidetaka

Abstract

An optical device is provided with a first optical waveguide (100) and a second optical waveguide (120). The first optical waveguide (100) is provided with a lower cladding layer (101) and a first core (102) composed of Si. The second optical waveguide (120) is provided with a second core (121) composed of a compound semiconductor, and a cladding layer (122) composed of silicon oxide is formed on the second core (121). The second optical waveguide (120) overlaps the first optical waveguide (100) and is formed along the first optical waveguide (100). The second core (121) is supported in contact with the top of the first core (102).

IPC Classes  ?

  • G02B 6/122 - Basic optical elements, e.g. light-guiding paths
  • G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves

54.

ADAPTOR

      
Application Number JP2024030427
Publication Number 2026/047837
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Sato, Rieko
  • Ishihara, Takako
  • Kuwabara, Kei
  • Kondo, Toshihiko

Abstract

An adapter according to the present invention comprises: first and second connector parts to which a terminal for transmitting a biological signal measured by an electrode part is attached; third and fourth connector parts to which an electrode part to be brought into contact with a living body is attached; a first flexible wiring part for electrically connecting the first connector part to the third connector part; a second flexible wiring part for electrically connecting the second connector part to the fourth connector part; and a flexible substrate on which the first connector part, the second connector part, the third connector part, and the fourth connector part are arranged in alignment on a straight line and the first and second flexible wiring parts are disposed inside thereof. The connector parts are arranged in such a manner that the distance between the third connector and the fourth connector is longer than the distance between the first connector and the second connector. The first and second connector parts are arranged on a side to which the terminal is attached, and the third and fourth connector parts are arranged on a side to which the electrode part is attached.

IPC Classes  ?

  • A61B 5/274 - Connection of cords, cables or leads to electrodes using snap or button fasteners

55.

CELL-FREE MASSIVE MIMO SYSTEM AND COMMUNICATION CONTROL METHOD

      
Application Number JP2024030678
Publication Number 2026/047886
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Ramamoorthi, Yoghitha
  • Murakami, Tomoki
  • Takatori, Yasushi
  • Ogawa, Tomoaki

Abstract

A cell-free massive MIMO system according to the present disclosure comprises a plurality of APs, a plurality of RISs, and a CPU connected thereto. The CPU acquires user information relating to a plurality of UEs from the plurality of APs, and determines one or more related APs to be associated with the plurality of UEs from among the plurality of APs for each UE on the basis of the user information. The CPU determines one or more related RISs to be associated with the one or more related APs from among the plurality of RISs for each related AP on the basis of mapping information between the plurality of APs and the plurality of RISs. The CPU determines allocation of resources of each of the one or more related RISs to the plurality of UEs such that the minimum required quality of service is obtained in each of the plurality of UEs, provides RIS information regarding the allocation to the one or more related APs, and controls the one or more related RISs according to the allocation.

IPC Classes  ?

  • H04B 7/024 - Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
  • H04B 7/0413 - MIMO systems
  • H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

56.

METHOD FOR PRODUCING NANOWIRE

      
Application Number JP2024030433
Publication Number 2026/047840
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Endo, Yukihiro
  • Sekine, Yoshiaki
  • Taniyasu, Yoshitaka

Abstract

43433 on the substrate (101). After forming the nanowire (102) in this manner, the nanowire (102) can be selectively peeled from the substrate (101), and the peeled nanowire (102) can be transferred to another substrate (not depicted in the drawings).

IPC Classes  ?

  • C30B 29/46 - Sulfur-, selenium- or tellurium-containing compounds
  • B82Y 40/00 - Manufacture or treatment of nanostructures
  • C01B 19/04 - Binary compounds
  • C23C 16/18 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metallo-organic compounds
  • C30B 25/18 - Epitaxial-layer growth characterised by the substrate
  • C30B 29/60 - Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape

57.

SEARCH SYSTEM

      
Application Number JP2024031302
Publication Number 2026/048007
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Goto, Yukihiro
  • Okano, Nobuyuki
  • Homan, Sadaharu

Abstract

According to the present disclosure, an information processing device 40 and an information processing method using the information processing device 40 link position data of a plurality of arbitrary positions underground with search data obtained by searching, at the plurality of arbitrary positions underground by using transmission waves, for an object subject to searching, and calculate the position, in an underground space, of the object subject to searching.

IPC Classes  ?

  • G01V 9/00 - Prospecting or detecting by methods not provided for in groups
  • G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

58.

INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD

      
Application Number JP2024030466
Publication Number 2026/047845
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Hayami, Yusuke
  • Ogasawara, Shiro
  • Yagi, Sayaka

Abstract

An information processing device SV according to one aspect of the present invention is capable of communicating with a plurality of terminal devices UT, and includes: a terminal handling content acquisition unit 11 that comprehends screen data and text information handled by the terminal devices UT; a trouble word acquisition unit 12 that acquires a trouble word input by a person seeking advice; a suitability evaluation value calculation unit 13 that calculates a degree of recommendation; a shared region acquisition unit 141 that acquires a shared region, which is a range of users among which documents are shared by said users, and extracts shared words; a shared region confirmation unit 142 that identifies a shared region to which the person seeking advice and a given user both belong; an inclusion state confirmation unit 145 that confirms whether the trouble word is included among the shared words of the identified shared region; a recommendation degree correction unit 146 that corrects the degree of recommendation; a recommendation degree evaluation unit 15 that calculates the degree of recommendation of an advisor in accordance with the corrected degree of recommendation; and an output control unit 16 that outputs information for presenting information regarding the advising user.

IPC Classes  ?

59.

HARDWARE RESOURCE DETERMINATION DEVICE, HARDWARE RESOURCE DETERMINATION METHOD, AND PROGRAM

      
Application Number JP2024030231
Publication Number 2026/047796
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Toyoshima Yukio
  • Hatano Tomoya
  • Kou Sei

Abstract

A hardware resource determination device comprises: a source code acquisition unit that acquires the source code of an application; a component analysis unit that analyzes a component of the source code acquired by the source code acquisition unit; a category determination unit that determines the category to which the source code belongs on the basis of the result of the analysis by the component analysis unit; and a hardware resource determination unit that determines a hardware resource for executing the application on the basis of the category determined by the category determination unit.

IPC Classes  ?

  • G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]

60.

TRANSMISSION SYSTEM

      
Application Number JP2024030498
Publication Number 2026/047854
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Taguchi, Katsuhisa
  • Fukui, Tatsuya
  • Sakaue, Yuki
  • Tamaki, Shinya

Abstract

A transmission system 100 and a transmission method carried out by the transmission system 100 according to the present disclosure are such that a camera control signal for controlling an imaging unit 31 is transmitted to a network 900, and the imaging unit captures an image of an object to be imaged in accordance with the control signal received from the network 900 and transmits pixel data corresponding to each of a plurality of pixels of the imaging unit 31 simultaneously in parallel to the network 900.

IPC Classes  ?

  • H04N 21/239 - Interfacing the upstream path of the transmission network, e.g. prioritizing client requests

61.

TRANSMISSION SYSTEM

      
Application Number JP2024030493
Publication Number 2026/047851
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Taguchi, Katsuhisa
  • Fukui, Tatsuya
  • Sakaue, Yuki
  • Tamaki, Shinya

Abstract

In a transmission system 100 according to the present disclosure and a transmission method performed by the transmission system 100, pixel data corresponding to each of a plurality of pixels of an imaging unit 31 is transmitted to a network 900, the pixel data is received from the network 900, and image data composed of at least some of the plurality of pixels is generated from the received pixel data.

IPC Classes  ?

  • H04N 21/238 - Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidthProcessing of multiplex streams
  • H04N 23/57 - Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

62.

LEARNING DEVICE, INFERENCE DEVICE, LEARNING METHOD, AND PROGRAM

      
Application Number JP2024030491
Publication Number 2026/047850
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tanaka Ko
  • Kameoka Hirokazu
  • Kaneko Takuhiro
  • Kondo Yuto

Abstract

Provided is a learning device comprising a control unit that performs training of a learning target, wherein: in the training, training is performed using a training model, which is a mathematical model different from PRVAE-VC in that a HuBERT model is used instead of a mel-spectrogram extractor; and the learning target is a mathematical model that is a part of the training model and differs from that obtained as a mathematical model used in an inference stage by the PRVAE-VC in that a HuBERT model is used instead of a mel-spectrogram extractor.

IPC Classes  ?

  • G06N 3/0455 - Auto-encoder networksEncoder-decoder networks
  • G10L 21/007 - Changing voice quality, e.g. pitch or formants characterised by the process used

63.

SEMICONDUCTOR LENS, PRODUCTION METHOD FOR SAME, AND LIGHT-RECEIVING ELEMENT

      
Application Number JP2024031117
Publication Number 2026/047966
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamada, Yuki
  • Hiraoka, Ikue
  • Nakajima, Fumito

Abstract

A substrate (101) that has a principal surface in the (100) plane is etched using a first mask pattern (201) that has an opening (201a) that is an ellipse for which the major axis direction is the [0-11] direction of InP to form a plano-convex lens (103) that has a convex surface that is a spherical surface for which the major axis direction is the [0-11] direction. The plano-convex lens (103) is formed at a bottom surface of a recess (102).

IPC Classes  ?

  • H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
  • G02B 3/00 - Simple or compound lenses
  • H10F 30/20 - Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors

64.

OPTICAL FIBER HOLDING JIG AND OPTICAL FIBER HOLDING METHOD

      
Application Number JP2024030279
Publication Number 2026/047810
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Hirota Hidenobu
  • Uematsu Takui
  • Noto Kazutaka
  • Nishikawa Daichi
  • Ogushi Ikutaro

Abstract

An optical fiber holding jig (30) comprises a holding part (31) for holding an optical fiber. The holding part (31) includes a body (32) including a flat surface (32a) in which a groove part (34) for accommodating a part of the optical fiber is formed, and a pair of flange parts (33, 33) provided on both sides of the body (32) and positioned at a position lower than the flat surface (32a) in the height direction of the body (32) and orthogonal to the flat surface (32a).

IPC Classes  ?

  • G02B 6/25 - Preparing the ends of light guides for coupling, e.g. cutting
  • B24B 19/00 - Single purpose machines or devices for particular grinding operations not covered by any other main group

65.

OPTICAL FIBER PROCESSING DEVICE

      
Application Number JP2024031138
Publication Number 2026/047968
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kikuchi Masashi
  • Yamada Yusuke
  • Mori Takayoshi

Abstract

An optical fiber processing device (10) is provided with: a roller (11) that has, on the outer periphery thereof, a recess (15) on which an optical fiber (1) is hung; and an irradiation part (12) that irradiates the optical fiber (1), while hanging on the recess (15), with an optical pulse (16). The optical axis (16a) of the optical pulse (16) intersects the deepest section (19) of the recess (15).

IPC Classes  ?

66.

ENVIRONMENT CONSTRUCTION DEVICE AND PROGRAM

      
Application Number JP2024030286
Publication Number 2026/047814
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Fukai, Misa
  • Koya, Hidetaka
  • Yokose, Fumihiro
  • Uchida, Ryo
  • Kasamatsu, Miho
  • Ogawa, Shinji
  • Nakanishi, Koki

Abstract

An environment construction device (130) according to an embodiment comprises: a screen extraction unit (131) that extracts a common region from captured images for each operation using an operation log acquired from an external device, and deletes the extracted regions from all of the captured images to generate a system screen for each operation; a screen generation unit (132) that combines two system screens using, as a reference, a common region of consecutive system screens among the system screens for each operation including the initial system screen in the initial state before operation, to thereby generate an overall system screen; an element extraction unit (133) that uses the operation location coordinates on the system screen for one operation to compare at least two system screens for which operations are consecutively performed, among the system screens for each operation including the initial system screen, to thereby determine if there is an input element or a temporary display element depending on whether information remains at the operation location coordinates; an element setting unit (134) that sets a reference by calculating the position coordinates of the system screen for one operation in an overall system screen, and calculates the operation location coordinates on the overall system screen; and an environment construction unit (135) that combines an input element displayed at the operation location with the overall system screen on the basis of the operation location coordinates on the overall system screen.

IPC Classes  ?

  • G06T 3/00 - Geometric image transformations in the plane of the image
  • G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation

67.

WAVELENGTH BAND EXPANSION DEVICE, OPTICAL TRANSMISSION SYSTEM, AND WAVELENGTH BAND EXPANSION METHOD

      
Application Number JP2024030281
Publication Number 2026/047811
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kotanigawa Takashi
  • Tajima Takaaki

Abstract

A wavelength band expansion device, an optical transmission system, and a wavelength band expansion method of the present invention use a unit provided with a wavelength division multiplexing coupler connected to an optical fiber, and a first wavelength selection switch for inputting/outputting, to/from the wavelength division multiplexing coupler, a plurality of first optical signals that are in a first wavelength band and transmitted over the optical fiber. An additional coupler connected between the optical fiber and the wavelength division multiplexing coupler is disposed, and a second wavelength selection switch for inputting/outputting, to/from the additional coupler, a plurality of second optical signals that are in a second wavelength band and transmitted over the optical fiber is disposed. A second wavelength band that does not overlap with the first wavelength band is set.

IPC Classes  ?

  • H04J 14/02 - Wavelength-division multiplex systems

68.

SIGNAL CONVERSION DEVICE AND SIGNAL CONVERSION METHOD

      
Application Number JP2024030298
Publication Number 2026/047818
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Omichi Shion
  • Shintaku Kengo
  • Ohara Takuya

Abstract

This signal conversion device comprises: a first signal reception unit that receives a first signal used in a first network; a data deletion unit that generates a second signal by deleting a portion of data from the first signal received by the first signal reception unit; a first signal generation unit that generates a third signal used in a second network by packetizing the second signal generated by the data deletion unit; and a first signal transmission unit that transmits the third signal generated by the first signal generation unit to the second network.

IPC Classes  ?

  • H04L 12/66 - Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

69.

OPTICAL COMMUNICATION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND FREQUENCY OFFSET REDUCTION METHOD

      
Application Number JP2024030294
Publication Number 2026/047816
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Nakajima Yukinobu
  • Yamazaki Etsushi
  • Sone Yoshiaki
  • Yamamoto Shuto
  • Okamoto Seiji
  • Masuda Akira
  • Sasai Takeo
  • Taniguchi Hiroki

Abstract

A power derivation unit derives the power difference or power ratio between a positive-side frequency component and a negative-side frequency component of a signal spectrum of a coherently detected reception signal by using light output from a light source unit. A digital signal processing unit estimates the frequency offset amount of the coherently detected reception signal, and compensates the reception signal for the estimated frequency offset amount. A control amount derivation unit derives a control amount on the basis of the power difference or the power ratio when the power difference or the power ratio is larger than a predetermined condition, and derives a control amount on the basis of the estimated frequency offset amount when the power difference or the power ratio is smaller than the predetermined condition. A frequency control unit changes, by the derived control amount, the frequency of the light output by the light source unit.

IPC Classes  ?

70.

REFLECTOR ANTENNA

      
Application Number JP2024031140
Publication Number 2026/047969
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Sasaki Hirofumi
  • Yagi Yasunori
  • Lee Doohwan
  • Kudo Riichi

Abstract

One aspect of the present invention is a reflector antenna provided with: a rotationally symmetric secondary reflecting mirror that is a secondary reflecting mirror having a shape (360/n)-degree rotationally symmetric with respect to a prescribed axis serving as an axis of rotational symmetry, the prescribed axis being an axis that is prescribed; and a rotationally symmetric primary reflecting mirror that is a primary reflecting mirror having a shape (360/m)-degree rotationally symmetric with respect to the prescribed axis serving as an axis of rotational symmetry. As compared with a reference reflector antenna, which is a reflector antenna provided with: a reference secondary reflecting mirror that is a secondary reflecting mirror having a cross-sectional shape coinciding with or substantially coinciding with a quadratic curve; and a reference primary reflecting mirror that is a primary reflecting mirror having a cross-sectional shape coinciding with or substantially coinciding with a quadratic curve, the rotationally symmetric secondary reflecting mirror has a shape obtained by rotating a part of the cross-sectional shape of the reference secondary reflecting mirror n times by (360/n) degrees each time with respect to the prescribed axis serving as an axis of rotational symmetry, and the rotationally symmetric primary reflecting mirror has a shape obtained by rotating a part of the cross-sectional shape of the reference primary reflecting mirror m times by (360/m) degrees each time with respect to the prescribed axis serving as an axis of rotational symmetry.

IPC Classes  ?

  • H01Q 19/19 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface

71.

OBSERVATION DATA PREDICTING DEVICE AND OBSERVATION DATA PREDICTING PROGRAM

      
Application Number JP2024031081
Publication Number 2026/047963
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kurasawa, Hisashi
  • Tomita, Junji
  • Maki, Toshitaka
  • Naya, Maiko
  • Matsui, Kazuma

Abstract

This observation data predicting device: accepts designated time and designated position information; from a dataset that includes records in which time information, position information, and observation values are associated with each other, samples each record satisfying a predetermined condition as subset data; inputs the subset data to an encoder model that, upon accepting input of a record before a specified time t, included in learning data, outputs an observation value at a time after the time t; and inputs an output of an encoder layer of the encoder model and the designated time and designated position information into a decoder model that, upon accepting input of the output of the encoder layer and the time information and position information of a record after the time t, selected from the learning data, outputs an observation value of the selected record, and uses the observation value output from the decoder model as a predicted observation value.

IPC Classes  ?

72.

LEARNING DEVICE, CONVERSION DEVICE, LEARNING METHOD, AND PROGRAM

      
Application Number JP2025028783
Publication Number 2026/048559
Status In Force
Filing Date 2025-08-15
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kaneko, Takuhiro
  • Kameoka, Hirokazu
  • Tanaka, Kou
  • Kondou, Yuuto

Abstract

This learning device comprises a control unit that performs knowledge distillation using, as a teacher model, a mathematical model that performs signal conversion using a diffusion model and has been trained by non-parallel conversion. A student model in the knowledge distillation is a mathematical model that performs signal conversion using a diffusion model and has fewer steps in a despreading process than the teacher model. In the knowledge distillation, the student model is updated so as to reduce the difference between the result of signal conversion by the student model and the result of signal conversion by the teacher model.

IPC Classes  ?

73.

MONITORING DEVICE

      
Application Number JP2024030819
Publication Number 2026/047923
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Ishikawa Takuya
  • Tamamatsu Junichiro
  • Kobayashi Daiki
  • Makino Ryo
  • Ishii Azusa

Abstract

A monitoring device (10) comprises a control unit (12) that: sets a reference point for an underground structure that is a continuous body; calculates, on the basis of interferometric SAR measurement data (24), the difference in the amount of displacement of the ground in the up-down direction between the set reference point and a plurality of locations within an area in which the underground structure is buried; and determines the amount of relative displacement of the underground structure in the up-down direction at the plurality of locations.

IPC Classes  ?

  • G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
  • G01C 7/02 - Tracing profiles of land surfaces

74.

DIALOG DEVICE, DIALOG METHOD, AND DIALOG PROGRAM

      
Application Number JP2024030628
Publication Number 2026/047876
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Hama, Kenta
  • Otsuka, Atsushi
  • Ishii, Ryo

Abstract

This dialog device comprises an input unit, an action selection unit, an utterance generation unit, and an output unit. The input unit receives an input of an utterance of a user. On the basis of the input utterance of the user, profile information about the user, and the context of a dialog with the user, the action selection unit selects an action for the user by calling functions by means of a natural language processing model and using a result of calling, from among predefined functions, a function necessary for an action for maintaining the context of the dialog with the user. Thereafter, the utterance generation unit uses the natural language processing model to generate and output an utterance necessary for the action on the basis of the action selected by the action selection unit. The output unit outputs a log of the dialog with the user, which includes an utterance serving as a response from the user.

IPC Classes  ?

  • G06F 40/56 - Natural language generation
  • G10L 15/22 - Procedures used during a speech recognition process, e.g. man-machine dialog

75.

PREDICTION METHOD AND PREDICTION PROGRAM

      
Application Number JP2024030647
Publication Number 2026/047882
Status In Force
Filing Date 2024-08-28
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kodama, Daiki
  • Shimizu, Shinya
  • Takayama, Chihiro

Abstract

A prediction device disclosed herein acquires a series of actions that members of a group performing a collaborative task each performed in order to perform the collaborative task. Next, the prediction device uses the acquired series of actions of each member to calculate, for each member, an action adjustment probability indicating the probability that the member will change the next action in accordance with the action of another member and the probability that the member will not change the next action. Thereafter, on the basis of the calculated action adjustment probability for each member, the prediction device calculates, for each member, a value obtained by multiplying the probability that the member will not change the next action by the probability that another member will change the next action in accordance with the action of the member. Also, the prediction device outputs a value, obtained by adding up the calculated values for the members of the group, as a predicted value of the level of performance by the group.

IPC Classes  ?

  • G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations

76.

COMMUNICATION SYSTEM AND COMMUNICATION METHOD

      
Application Number JP2024030309
Publication Number 2026/047820
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tajimi, Tomoki
  • Nishiyama, Satoshi
  • Nakamura, Takayuki
  • Hayashi, Kohei

Abstract

This communication system includes a plurality of gateways that are connected to a mobile network and a plurality of edge servers, and a path selection controller that selects a communication path in the mobile network. The gateway has a notification unit that, if a path failure has been detected in a path to the edge server, notifies the path selection controller of information relating to a communication terminal that uses the path in which the path failure has been detected. The path selection controller has a session management unit that, on the basis of the information relating to the communication terminal, switches the communication path in the mobile network used by the communication terminal that uses the path to a communication path to a gateway different from the gateway in which the path failure has been detected among the plurality of gateways.

IPC Classes  ?

  • H04W 40/34 - Modification of an existing route
  • H04W 40/24 - Connectivity information management, e.g. connectivity discovery or connectivity update
  • H04W 80/10 - Upper layer protocols adapted for session management, e.g. SIP [Session Initiation Protocol]

77.

READOUT DEVICE

      
Application Number JP2024030555
Publication Number 2026/047868
Status In Force
Filing Date 2024-08-27
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tabata Mizuki
  • Ishii Azusa
  • Makino Ryo

Abstract

A readout device (10) according to the present disclosure comprises: a detection unit (11) that detects a traveling direction on a reference map during capturing of a plurality of query images sequentially over time by a moving camera; a calculation unit (12) that, on the basis of optical flows of the plurality of query images, calculates the orientation of the camera with respect to the traveling direction; and a readout unit (13) that, from a database that stores, as reference data, a plurality of reference images and the reference map in which feature points of the plurality of reference images are associated with three-dimensional points on a three-dimensional map, reads out the reference data while restricting the range of the reference data on the basis of the orientation of the camera with respect to the traveling direction.

IPC Classes  ?

  • G06T 7/70 - Determining position or orientation of objects or cameras

78.

WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD

      
Application Number JP2024031401
Publication Number 2026/048035
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamada, Tomoyuki
  • Abeysekera, Hirantha
  • Kishida, Akira
  • Nagano, Kotaro
  • Iwatani, Junichi
  • Otani, Hanae
  • Asai, Yusuke

Abstract

A wireless communication system according to one embodiment comprises: a communication destination access point; an access point for access transmission; a low-latency requesting terminal that transmits a packet which requires a prescribed low latency; and a non-low-latency requesting terminal that allows transmission of a packet with a longer latency than the low-latency requesting terminal, wherein upon receiving, from the low-latency requesting terminal, request information that indicates an access request to the communication destination access point, the access point for access transmission transmits the request information to the communication destination access point, and the communication destination access point yields an TXOP to the low-latency requesting terminal.

IPC Classes  ?

  • H04W 72/512 - Allocation or scheduling criteria for wireless resources based on terminal or device properties for low-latency requirements, e.g. URLLC
  • H04W 72/27 - Control channels or signalling for resource management between access points
  • H04W 84/12 - WLAN [Wireless Local Area Networks]

79.

PROCESSING DEVICE, PROCESSING METHOD, AND PROCESSING PROGRAM

      
Application Number JP2024031410
Publication Number 2026/048041
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamashita, Tomoya
  • Yamanaka, Yuki
  • Nagai, Tomohiro

Abstract

A server device (10) includes: an extraction unit (12) that creates slots from a past response history data set (11), the slots being a set of question items prepared by dividing information to be acquired from a user into prescribed units, and that extracts properties of the question items in the slots; and a conversation control unit (13) that selects, from the slots, a question item to be asked to the user on the basis of the properties of the question items, supplies the selected question item to a language model, thereby causing the language model to generate a question to the user, and that controls a conversation with the user via a user terminal.

IPC Classes  ?

  • H04L 51/02 - User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail using automatic reactions or user delegation, e.g. automatic replies or chatbot-generated messages

80.

REFLECTIVE STRUCTURE, WIRELESS COMMUNICATION SYSTEM, AND METHOD FOR INSTALLING REFLECTIVE STRUCTURE

      
Application Number JP2024031427
Publication Number 2026/048043
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Omiya, Riku
  • Murakami, Tomoki
  • Yoneda, Takumi
  • Takatori, Yasushi
  • Ogawa, Tomoaki

Abstract

The purpose of the present disclosure is to provide a technique that makes it possible to reflect radio waves without installing a reflective structure in an inclined manner. A reflective structure according to the present disclosure comprises radio wave reflectors. The reflectors are repeatedly arranged one-dimensionally or two-dimensionally, and the reflectors respectively have radio wave reflection surfaces that are inclined in the same direction.

IPC Classes  ?

  • H01Q 15/14 - Reflecting surfacesEquivalent structures

81.

COMMUNICATION CONTROL METHOD AND PROGRAM

      
Application Number JP2024030337
Publication Number 2026/047825
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Funami Shota
  • Yamada Ryohei
  • Kimura Hideaki

Abstract

A communication control method according to the present disclosure includes: a step for determining a temporary communication schedule, which is a communication schedule for unicast communication by a plurality of nodes for transmitting data to a plurality of destination nodes, by means of a prescribed scheme; and a step for restructuring the communication schedule of the plurality of nodes in accordance with the temporary communication schedule so that transmission of an (i+1)th (i=1, 2, ..., and n-1) data item starts earlier as compared to a case in which the (i+1)th data item is transmitted after an i-th data item has been transmitted.

IPC Classes  ?

  • H04L 67/60 - Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
  • H04L 67/10 - Protocols in which an application is distributed across nodes in the network

82.

PROTECTIVE ARTICLE

      
Application Number JP2024030335
Publication Number 2026/047824
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Watanabe Hidetaka
  • Sano Tokihiro
  • Izumi Toshimitsu

Abstract

A protective article (1) for protecting a cable includes: an inner tube for accommodating the cable; an outer wall part for accommodating the inner tube; and a protective material (13) installed in a gap between the outer wall part and the inner tube and extending along the direction in which the cable extends. The protective material (13) has an end surface facing an end surface of a protective material (13') provided on a protective article (1') adjacent to the protective article (1) in said direction. At least a part of the end surface of the protective material (13) is not perpendicular to said direction.

IPC Classes  ?

  • H02G 9/04 - Installations of electric cables or lines in or on the ground or water in surface ductsDucts or covers therefor

83.

SYSTEM

      
Application Number JP2024030333
Publication Number 2026/047822
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Tashiro Yoshihiko
  • Izumi Toshimitsu
  • Watanabe Hidetaka

Abstract

A system (1) comprises: a control device (10) that controls a current to a power cable; a detection device (20) that detects a temperature inside a pipeline accommodating the power cable; a first facility (30) that supplies power to an external supply destination via the power cable; and a second facility (40) that can supply power to the external supply destination not via the power cable. The detection device (20) outputs temperature information indicating a temperature to the control device (10). When determining that the temperature is equal to or higher than a predetermined temperature on the basis of the temperature information, the control device (10) reduces the current and switches at least a part of the power supply to the external supply destination from the supply from the first facility (30) to the supply from the second facility (40).

IPC Classes  ?

  • H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
  • H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

84.

LEARNING DEVICE, CONVERSION DEVICE, LEARNING METHOD, AND PROGRAM

      
Application Number JP2024031206
Publication Number 2026/047984
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kaneko Takuhiro
  • Kameoka Hirokazu
  • Tanaka Ko
  • Kondo Yuto

Abstract

A learning device comprises a control unit that performs knowledge distillation using, as a teacher model, a mathematical model that performs signal conversion using a diffusion model and is trained through non-parallel conversion. A student model in the knowledge distillation is a mathematical model that performs signal conversion using a diffusion model and has fewer steps in a de-spreading process than the teacher model. In the knowledge distillation, the student model is updated so as to reduce the difference between the result of signal conversion performed by the student model and the result of signal conversion performed by the teacher model.

IPC Classes  ?

85.

CABLE LAYING AUXILIARY DEVICE

      
Application Number JP2024031443
Publication Number 2026/048047
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Maehara Yasuhiro
  • Shimizu Tomoya
  • Yamada Yusuke
  • Mori Takayoshi
  • Matsuo Takashi
  • Kikuchi Masashi
  • Kobayashi Shun
  • Yanagida Akihiro

Abstract

This cable laying auxiliary device (10A) comprises: a housing (11) that has wheels (15) and is provided so as to be movable in a traveling direction (Z direction); a cable pressing part (12) that is provided in a front portion (11a) of the housing (11) in the traveling direction and presses a cable (1) laid in a groove (5) below the housing (11); and a filler emission part (14) that is positioned behind the cable pressing part (12) in the traveling direction and emits a filler (17) into the groove (5) in an amount corresponding to the number of rotations of the wheels (15) at a time when the housing (11) travels in the traveling direction.

IPC Classes  ?

  • G02B 6/54 - Underground or underwater installationInstallation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
  • H02G 9/02 - Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottomCoverings therefor, e.g. tile

86.

MECHANICAL STIMULATION RESPONSE ELEMENT

      
Application Number JP2024031224
Publication Number 2026/047985
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Takahashi Riku
  • Okamoto Hajime

Abstract

The main purpose of the present invention is to provide a mechanical stimulation response element which is capable of more precisely and efficiently stimulating a functional material in a polymer base material. A mechanical stimulation response element according to the present invention comprises a high-frequency mechanical vibration element, and a composite material part that is provided on the surface of a vibrator in the high-frequency mechanical vibration element. The composite material part comprises a composite material of a polymer base material and a functional material the physical properties of which are changed by a distortion. The high-frequency mechanical vibration element is for applying high-frequency minute vibration exceeding the upper limit of frequencies at which deformation of the polymer base material can follow a stress, and changes the physical properties of the functional material by means of the high-frequency minute vibration applied by the high-frequency mechanical vibration element.

IPC Classes  ?

  • H10N 30/20 - Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
  • H10N 30/30 - Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
  • H10N 30/853 - Ceramic compositions

87.

FAILURE HANDLING DEVICE AND FAILURE HANDLING METHOD

      
Application Number JP2024030149
Publication Number 2026/047786
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Aoki, Yoshiki
  • Irino, Hitoshi
  • Homma, Shunsuke

Abstract

A failure handling device is used in a redundancy system (100) that operates a routing protocol between IP devices via a VxLAN that connects between switches. The failure handling device records a peer relationship between the IP devices operating the routing protocol, the peer relationship being obtained by snooping control packets of the routing protocol. When a failure occurs, the failure handling device refers to the peer relationship to acquire an IP device on the failure-location side and an IP device on the counterpart side with respect to the failure location, and, by proxy, notifies the IP device on the counterpart side with respect to the detected failure location regarding a message pertaining to failure detection of the routing protocol originally transmitted from the IP device on the failure-location side.

IPC Classes  ?

  • H04L 41/06 - Management of faults, events, alarms or notifications
  • H04L 45/247 - Multipath using M:N active or standby paths

88.

BASE STATION AND CONNECTION SWITCHING DEVICE

      
Application Number JP2024031238
Publication Number 2026/047989
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Arai Takuto
  • Uchida Daisei
  • Wai Shuki
  • Tsukada Hibiki
  • Iwakuni Tatsuhiko
  • Yamamoto Hiroto
  • Miyagi Toshifumi

Abstract

This base station comprises: one or more communication devices that include communication resources for each cell and that form a plurality of cells by means of a plurality of distributed antennas; a plurality of switching units that switch connection relationships between the communication resources included in the one or more communication devices and the plurality of antennas; and one or more combining/distributing units that combine or distribute input signals between the plurality of switching units. 

IPC Classes  ?

  • H04B 7/024 - Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

89.

OPTICAL SIGNAL PROCESSING DEVICE, OPTICAL INTEGRATED CIRCUIT CHIP, AND METHOD FOR PRODUCING OPTICAL SIGNAL PROCESSING DEVICE

      
Application Number JP2024031479
Publication Number 2026/048057
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamaguchi Keita
  • Suzuki Kenya
  • Morimoto Yoshie
  • Moriwaki Osamu

Abstract

The present invention comprises: a chip 22 including a substrate 22a and a phase shifter 222 that controls an optical switch which is formed on the substrate 22a; a chip 21 including a substrate 21a and a phase shifter 212 that controls an optical switch which is formed on the substrate 21a; and a wire bonding substrate 25 including an electrode 254 and a common electrode 255 for supplying power to the chips 21 and 22, wherein an optical signal processing device is configured by the chip 22 including an electrode 226 and wiring 223 for connecting the electrode 254 and the common electrode 255 to the phase shifter 222, and an electrode 224 and the wiring 223 for connecting the electrode 254 and the common electrode 255 to a phase shifter 211.

IPC Classes  ?

  • G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
  • G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour

90.

CONTROL DEVICE AND CONTROL METHOD

      
Application Number JP2024031235
Publication Number 2026/047988
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kou Sei
  • Hatano Tomoya

Abstract

One embodiment of the present invention is a control device for migration in which an application operating on a first server is moved to a second server corresponding to the application, the control device comprising: a first migration control unit that starts up an application, which is the same as the application operating on the first server, on the second server in advance; an analysis unit that analyzes the operating state of the application operating on the first server; and a second migration control unit that, on the basis of the analysis result of the operating state by the analysis unit, causes the application already started up on the second server to take over the operating state of the application operating on the first server.

IPC Classes  ?

  • G06F 8/76 - Adapting program code to run in a different environmentPorting

91.

MONITORING CONTROL DEVICE, MONITORING CONTROL METHOD, AND PROGRAM

      
Application Number JP2024030158
Publication Number 2026/047789
Status In Force
Filing Date 2024-08-26
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Iwasa, Kazuki
  • Harada, Ko
  • Nishiyama, Satoshi
  • Nakamura, Takayuki

Abstract

The purpose of the present disclosure is to control a monitoring device so as to perform appropriate life/death monitoring. To this end, the present disclosure relates to a monitoring control device that controls life/death monitoring for confirming the operating state of user equipment, the monitoring control device comprising: a communication unit that receives the IP address of authenticated user equipment from an authentication device that authenticates pieces of user equipment in a prescribed closed network and thereby assigns an IP address to each piece of user equipment; and a calculation unit that calculates the user equipment IP address assignment rate on the basis of the IP addresses of the authenticated user equipment and the number of pieces of user equipment in the prescribed closed network, and that, on the basis of the assignment rate, the number of pieces of user equipment, and a predetermined monitoring interval, calculates a monitoring request amount indicating the number of times per unit time that a measurement packet for life/death monitoring should be transmitted to prescribed user equipment among the pieces of user equipment.

IPC Classes  ?

  • H04L 43/10 - Active monitoring, e.g. heartbeat, ping or trace-route

92.

OPTICAL CONNECTOR AND METHOD FOR MANUFACTURING OPTICAL CONNECTOR

      
Application Number JP2024031488
Publication Number 2026/048062
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Koyama Ryo
  • Fukai Chisato
  • Ogushi Ikutaro

Abstract

This optical connector (10) is provided with: a ferrule (11) having an end surface (15) in which at least one fiber hole (12) is open; at least one optical fiber (1) in which a core end surface (2a) is exposed from the end surface (15) via the fiber hole (12); a refractive index matching part (20) that is formed so as to be elastically deformable and is in contact with the core end surface (2a); and a protective part (21) that is provided on the end surface (15) and is formed to be harder than the refractive index matching part (20). The protection part (21) includes an accommodating recess (21) that accommodates the refractive index matching part (20).

IPC Classes  ?

  • G02B 6/40 - Mechanical coupling means having fibre bundle mating means

93.

CONTROL APPARATUS AND CONTROL METHOD

      
Application Number JP2024031244
Publication Number 2026/047991
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Kou Sei
  • Hatano Tomoya

Abstract

One embodiment of the present invention is a control apparatus for migration in which an application for device control, which runs on a first server, is transferred to a second server corresponding to the application. The control apparatus comprises: a first control unit that controls a first migration in which the same application as the application running on the first server is started in advance on the second server; an analysis unit that analyzes the running state of the application running on the first server; a required time calculation unit that calculates, on the basis of the analysis result of the running state, a required time for a second migration in which the running state of the application running on the first server is carried over to the application which has been already started on the second server; a timing control unit that controls an execution timing of the second migration on the basis of the calculation result of the required time; and a second control unit that executes the second migration at the timing controlled by the timing control unit.

IPC Classes  ?

  • G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance
  • G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
  • G06F 9/455 - EmulationInterpretationSoftware simulation, e.g. virtualisation or emulation of application or operating system execution engines
  • G06F 11/20 - Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
  • G06F 11/30 - Monitoring

94.

GAIN EQUALIZER

      
Application Number JP2024031480
Publication Number 2026/048058
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Yamaguchi Keita
  • Suzuki Kenya
  • Morimoto Yoshie
  • Moriwaki Osamu

Abstract

One embodiment disclosed herein is a gain equalizer (80) having a first optical waveguide circuit (11) and a second optical waveguide circuit (21) which are formed on a substrate. Each of the first optical waveguide circuit and the second optical waveguide circuit includes: an input waveguide; N (N is an integer of 3 or more) 2-input 2-output optical multiplexing/demultiplexing circuits; N-1 arm waveguides composed of two waveguides connecting the optical multiplexing/demultiplexing circuits; an output waveguide; and phase shifters (115-1 to 115-(N-1), 215-1 to 215-(N-1)) mounted to at least one of the arm waveguides. The gain equalizer includes: an optical folding structure (31) for inputting light output from the output waveguide of the first optical waveguide circuit to the output waveguide of the second optical waveguide circuit; and electrical wiring (811-1 to 811-(N-1), 821-1 to 821-(N-1)) that electrically connects, in series, the phase shifter of the first optical waveguide circuit and the phase shifter of the second optical waveguide circuit corresponding to the phase shifter of the first optical waveguide circuit.

IPC Classes  ?

  • G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour

95.

OPTICAL SWITCH AND OPTICAL DEVICE

      
Application Number JP2024031018
Publication Number 2026/047950
Status In Force
Filing Date 2024-08-29
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Watanabe Hiroshi
  • Fukai Chisato
  • Ogushi Ikutaro
  • Katayama Kazunori

Abstract

An optical switch (SW) comprises a plurality of input ports (P1-P4) and a plurality of output ports (Q1-Q4). The plurality of input ports are arranged at equal intervals around a rotation axis, the plurality of output ports are arranged at equal intervals around the rotation axis, the plurality of input ports are configured from a first input port (P1) for external connection and second input ports (P2-P4) for internal connection other than the first input port, and the plurality of output ports are configured from a first output port (Q1) for external connection and second output ports (Q2-Q4) for internal connection other than the first output port. The second input ports and the second output ports are connected by optical fibbers(FB2-FB4), combinations of connections between the input ports and output ports are switched by rotation around the rotation axis, the plurality of input ports and the plurality of output ports are simultaneously connected, and an optical signal propagates between the connected input port and output port.

IPC Classes  ?

  • G02B 6/35 - Optical coupling means having switching means
  • H04Q 3/52 - Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements

96.

OBJECT TRACKING DEVICE, OBJECT TRACKING METHOD, AND PROGRAM

      
Application Number JP2024031494
Publication Number 2026/048065
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Shiota, Tsukasa
  • Takagi, Motohiro
  • Seshimo, Hitoshi

Abstract

This object tracking device includes a processor that executes processing of acquiring a relationship between an object bbox coordinate group at time T-1 and an object bbox coordinate group at time T by matrix calculation, and associating the object bbox coordinate group at the time T-1 with the object bbox coordinate group at the time T on the basis of the acquired relationship represented by a matrix.

IPC Classes  ?

  • G06T 7/223 - Analysis of motion using block-matching

97.

SOCIAL NETWORK MODEL GENERATION DEVICE, METHOD, AND PROGRAM

      
Application Number JP2024031492
Publication Number 2026/048063
Status In Force
Filing Date 2024-09-02
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Takagi, Ikuko
  • Nakajima, Hajime
  • Fukai, Misa
  • Oishi, Haruo

Abstract

One embodiment of the present invention, on the basis of a communication log which includes text messages conveying a plurality of conversations that took place among a plurality of users, estimates at least one conversation function for each of the messages on the basis of information representing a preset conversation instigation viewpoint, and generates a relationship structure representing the relationship between the conversation functions on the basis of information representing the sequencing of the messages. Thereafter, an action relationship between the conversation functions in the estimated relationship structure is estimated, and a functional model representing a functional structure of a conversation among the users is generated using the relationship structure and the action relationship of the conversation functions.

IPC Classes  ?

98.

SPATIAL POWER TRANSMISSION SYSTEM

      
Application Number JP2024031264
Publication Number 2026/047996
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

In this spatial power transmission system, a controller is connected to a wireless communication device that communicates with a power reception device and supplies power to the power reception device, and a power transmission device that spatially transmits power to the power reception device. The power supply area of the power transmission device overlaps at least a part of the communication area of the wireless communication device. The controller causes the power transmission device to supply power to the power reception device when the power reception device is located in the power supply area, and causes the wireless communication device to supply power to the power reception device when the power reception device is located in the communication area outside the power supply area.

IPC Classes  ?

  • H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
  • H02J 50/30 - Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
  • H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
  • H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

99.

SPATIAL POWER TRANSMISSION SYSTEM

      
Application Number JP2024031286
Publication Number 2026/048003
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

In the present disclosure, a controller is connected to a power sending device capable of spatially transmitting power to at least one of a plurality of power reception devices. The controller: estimates the power states of the plurality of power reception devices by using a power generation model; determines, on the basis of a result of the estimation, a power reception device that requires power supply among the plurality of power reception devices; and instructs, on the basis of a result of the determination, the power sending device to supply power to the power reception device that requires power supply among the plurality of power reception devices.

IPC Classes  ?

  • H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
  • H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices

100.

SPATIAL POWER TRANSMISSION SYSTEM

      
Application Number JP2024031283
Publication Number 2026/048000
Status In Force
Filing Date 2024-08-30
Publication Date 2026-03-05
Owner NTT, INC. (Japan)
Inventor
  • Imae, Akihiro
  • Tamaki, Shinya
  • Narikawa, Satoshi

Abstract

The present disclosure is a controller connected to a wireless communication device, which performs communication with a power reception device and supplies power to the power reception device, and a power transmission device, which spatially transmits power to the power reception device, wherein: a power supply area of the power transmission device overlaps at least part of a communication area of the wireless communication device; and the controller determines a movement destination for the power reception device, selects the wireless communication device or the power transmission device in accordance with the movement destination for the power reception device, and causes the selected wireless communication device or power transmission device to supply power to the power reception device.

IPC Classes  ?

  • H02J 50/90 - Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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