Patents by Inventor Mikio Iwamura

Mikio Iwamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250093949
    Abstract: An AR system includes an acquisition unit configured to acquire a user state, an identification unit configured to identify gazed content which is content at which a content sharing source user is gazing, a first decision unit configured to decide whether or not to share the gazed content with other users, a second decision unit configured to identify a content sharing destination candidate user having a strong relationship with the content sharing source user on the basis of user states of the content sharing source user and one or more content sharing destination candidate users when the gazed content is shared with the other users and decide on the identified content sharing destination candidate user as a content sharing destination user, and a sharing unit configured to share the gazed content with the content sharing destination user.
    Type: Application
    Filed: July 20, 2022
    Publication date: March 20, 2025
    Applicant: NTT DOCOMO, INC.
    Inventors: Taishi YAMAMOTO, Eriko OSEKI, Kouki HAYASHI, Osamu GOTO, Mikio IWAMURA, Shinji KIMURA, Masayuki YOKOO
  • Publication number: 20240428289
    Abstract: A region value evaluation system is a system evaluating the value of a region to which display information to be displayed is allocated, in a virtual space that is used for a display in an information processing device and corresponds to a reality space in a position, and includes an evaluation information acquisition unit acquiring evaluation information including position information indicating the position in the reality space of the information processing device performing a display using the virtual space, and an evaluation unit performing aggregation based on the evaluation information acquired by the evaluation information acquisition unit to evaluate the value of the region on the basis of an aggregation result.
    Type: Application
    Filed: September 30, 2022
    Publication date: December 26, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Ryousuke KURACHI, Kengo MATSUMOTO, Mikio IWAMURA, Masayuki YOKOO, Fuminori SHINSEI, Shinji KIMURA
  • Publication number: 20240377641
    Abstract: A display device includes a transparent plate, an image light emission unit configured to emit image light toward one principal surface of the transparent plate, a transmission hologram configured to duplicate the image light emitted from the image light emission unit to transmit the image light as reproduction light, a reflection hologram provided on the other principal surface side of the transparent plate, and configured to reflect, on the one principal surface, the reproduction light transmitted by the transmission hologram and passing through the transparent plate toward an eye of the user, and an absorption layer provided on the other principal surface side of the reflection hologram, the absorption layer being formed by combining an absorption member configured to absorb a part of the reproduction light not reflected on the one principal surface of the reflection hologram and a transparent member.
    Type: Application
    Filed: September 15, 2022
    Publication date: November 14, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Mikiko NAKANISHI, Mikio IWAMURA, Yasuo MORINAGA
  • Publication number: 20240363044
    Abstract: A display control device includes a mode detecting unit configured to detect a mode corresponding to a level of understanding of a spatial structure of a real space displayed on a display unit and a control unit configured to control a display mode of a virtual object on the display unit according to the mode detected by the mode detecting unit. The control unit changes the display mode of the virtual object on the display unit from a first display mode corresponding to a first mode to a second display mode corresponding to a second mode via one or more intermediate display modes between the first display mode and the second display mode when the mode detected by the mode detecting unit changes from the first mode corresponding to a first level of understanding to the second mode corresponding to a second level of understanding.
    Type: Application
    Filed: June 9, 2022
    Publication date: October 31, 2024
    Applicant: NTT DOCOMO, INC.
    Inventors: Kei ISHIGURO, Tomohito YAMASAKI, Mikio IWAMURA, Masayuki YOKOO, Fuminori SHINSEI
  • Publication number: 20230351703
    Abstract: A positioning system includes a first storage unit that stores global map data in which image data outside a vehicle is associated with global position information and local map data in which image data inside the vehicle is associated with local position information, a division unit that divides image data into an image area outside the vehicle and an image area inside the vehicle, a global position estimation unit that performs matching of the global map data with the image area outside the vehicle, and estimates global position information, and a local position estimation unit that performs matching of the local map data with the image area inside the vehicle and estimates local position information.
    Type: Application
    Filed: March 3, 2021
    Publication date: November 2, 2023
    Applicant: NTT DOCOMO, INC.
    Inventors: Kouki HAYASHI, Taishi YAMAMOTO, Shinji KIMURA, Mikio IWAMURA, Osamu GOTO, Eriko OSEKI
  • Patent number: 11656458
    Abstract: A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables a wide angle (e.g., over 90 degrees field of view), high resolution, and a large eye-box with a compact size.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: May 23, 2023
    Assignees: NTT DOCOMO, Inc.
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuoki Ichikawa, Mikio Iwamura
  • Patent number: 11601834
    Abstract: A mobile station UE includes a measurement unit 102 configured to measure radio quality of a cell during communication or a neighboring cell for each of the two or more carriers, a determination unit 104 configured to determine whether to notify the radio base station eNB of a measurement result regarding each of the two or more carriers in the measurement unit 102, and a transmission unit 106 configured to transmit the measurement result in the measurement unit 102 to the radio base station eNB, wherein the transmission unit 106 transmits, in addition to the measurement result regarding a carrier in which it is determined by the determination unit 104 to notify the radio base station eNB of the measurement result in the measurement unit 102, a measurement result regarding a carrier other than the carrier.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: March 7, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroyuki Ishii, Mikio Iwamura
  • Publication number: 20210026135
    Abstract: A projection display having an optical light guide for a see-though display system using holographic optical element or diffractive optical element as in-coupling optics and combined with Fresnel mirrors as out-coupling optics is disclosed. A display using this light guide enables wide angle (e.g., over 90 degrees FOV), high resolution, and large eye-box with compact size.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 28, 2021
    Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuoki Ichikawa, Mikio Iwamura
  • Publication number: 20200374840
    Abstract: A user terminal is a user terminal of a first category that supports a channel bandwidth equal to or narrower than an indispensable channel bandwidth defined per subcarrier spacing for a user terminal of a second category, and includes: a reception section that receives at least one of a synchronization signal and a broadcast channel; and a control section that controls reception of system information that is mapped in a given bandwidth equal to or narrower than the indispensable channel bandwidth.
    Type: Application
    Filed: January 31, 2018
    Publication date: November 26, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Satoshi Nagata, Mikio Iwamura
  • Patent number: 10411938
    Abstract: How to apply an Alamouti like space-time coding (or transmit diversity) to a Filter Bank Multicarrier (FBMC) transmission using Offset QAM (OQAM). In FBMC, due to the orthogonality in the real domain only, an intrinsic interference results thereof for the imaginary component. Simply adapting the Alamouti scheme to FBMC OQAM is not obvious since the intrinsic interference terms are not equivalent at each antenna since it depends on the surrounding symbols. The application proposes to use a precoding symbol chosen to cancel out (zero) the intrinsic interference individually for each antenna, ie a code rate of 1/2 (sending one data symbol requires two time units). A more elaborated embodiment proposes to choose the contiguous precoding symbols such that a virtual QAM Alamouti scheme is achieved, without rate loss.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: September 10, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
  • Patent number: 10182393
    Abstract: A method is described for controlling a small cell base station in a wireless communication system having a plurality of small cell base stations controlled by a macro base station. The method includes taking, by a small cell base station, a measurement for obtaining information describing a vicinity around the small cell base station and reporting the information from the small cell base station to the macro base station.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 15, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
  • Publication number: 20180375704
    Abstract: How to apply an Alamouti like space-time coding (or transmit diversity) to a Filter Bank Multicarrier (FBMC) transmission using Offset QAM (OQAM). In FBMC, due to the orthogonality in the real domain only, an intrinsic interference results thereof for the imaginary component. Simply adapting the Alamouti scheme to FBMC OQAM is not obvious since the intrinsic interference terms are not equivalent at each antenna since it depends on the surrounding symbols. The application proposes to use a precoding symbol chosen to cancel out (zero) the intrinsic interference individually for each antenna, ie a code rate of ½ (sending one data symbol requires two time units). A more elaborated embodiment proposes to choose the contiguous precoding symbols such that a virtual QAM Alamouti scheme is achieved, without rate loss.
    Type: Application
    Filed: April 1, 2016
    Publication date: December 27, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
  • Publication number: 20180367353
    Abstract: How to apply an Alamouti like space-time coding (or transmit diversity) to a Filter Bank Multicarrier (FBMC) transmission using Offset QAM (OQAM). In FBMC, due to the orthogonality in the real domain only, an intrinsic interference results thereof for the imaginary component. Simply adapting the Alamouti scheme to FBMC OQAM is not obvious since the intrinsic interference terms are not equivalent at each antenna since it depends on the surrounding symbols. The application proposes to choose contiguous precoding symbols such that a virtual PAM Alamouti scheme is achieved. Code rates of 1/2 or 2/3 are achieved depending on the number of precoding symbols needed per antenna.
    Type: Application
    Filed: April 1, 2016
    Publication date: December 20, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
  • Patent number: 10085186
    Abstract: A method is described for controlling a user equipment to be served by a small cell base station in a wireless communication system including a plurality of small cell base stations controlled by a macro base station. The method includes signaling, by the small cell base station, the small cell base station capabilities to the macro base station; signaling, by the user equipment, the user equipment capabilities to the macro base station; and signaling, by the macro base station, a small cell base station configuration to the user equipment.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 25, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
  • Patent number: 10003992
    Abstract: A method is described for controlling a small cell base station and a user equipment to be served by the small base station in a wireless communication system having a plurality of small cell base stations controlled by a macro base station. The method has, in response to a request from the macro base station to the small cell base station, performing, by the small cell base station, a beacon transmission on one or more resources, in response to a request from the macro base station to the user equipment, performing, by the user equipment, a channel quality measurement on the one or more resources, and reporting the measured channel quality from the user equipment to the macro base station.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 19, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
  • Patent number: 9999031
    Abstract: To further notify the amount of data retained in the transmission buffer used in a communication among a plurality of MOBILE STATIONs to a RADIO BASE STATION, the mobile communication method according to the present invention includes: transmitting, with a MOBILE STATION (UE#1), a BSR (#1) indicating the amount of data retained in a transmission buffer corresponding to a logical channel in a Uu interface to a RADIO BASE STATION (eNB); transmitting, with a MOBILE STATION (UE1), a BSR (#2) indicating the amount of data retained in a transmission buffer corresponding to a logical channel in a Ud interface to the RADIO BASE STATION (eNB); and distinguishing, with the RADIO BASE STATION (eNB), the BSR (#1) from the BSR (#2) based on predetermined information included in the received BSR.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: June 12, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Mikio Iwamura, Tooru Uchino
  • Patent number: 9894566
    Abstract: A mobile communication method involving performing, at a mobile station UE which establishes a first connection in a first cell, a cell selection process at the time of detecting a failure in the first connection, transmitting, from the mobile station UE to a second cell selected in the cell selection process, a connection re-establishment request signal, determining, at a radio base station that manages the second cell, whether or not to store context information of the mobile station UE in response to the connection re-establishment request signal, acquiring, at the radio base station, the context information of the mobile station UE from a radio base station that manages the first cell, when determining that the context information of the mobile station UE is not stored, and establishing a second connection in the second cell for the mobile station UE, based on the context information of the mobile station UE.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: February 13, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Mikio Iwamura, Minami Ishii
  • Patent number: 9706474
    Abstract: When a network is requiring access barring, a mobile device determines whether a reference value broadcasted to the mobile device indicates a value determining that an access is denied regardless of a numerical value generated by the mobile device, or indicates a value having a possibility that an access of a certain mobile device is denied while an access of another mobile device is allowed. In the latter case, the mobile device determines appropriateness of an access by performing predetermined processing using the reference value as a value to be checked for a relationship with a numerical value generated by the mobile device when the mobile device does not have a special type access class, and uses a value enabling allowance of an access without performing the predetermined processing as a value for determining appropriateness of an access when the mobile device has the special type access class.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: July 11, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Mikio Iwamura, Minami Ishii, Mutsumi Ishimoto
  • Publication number: 20170078057
    Abstract: Transmission/reception timing of a data signal and a control signal through a Uu interface and transmission/reception timing of the data signal through a Ud interface are properly adjusted. A mobile communication method according to the present invention includes: a step A in which a radio base station eNB notifies a mobile station UE#1 and a mobile station UE#2 that an opportunity to transmit and receive the data signal through the Ud interface is allocated through a PDCCH in which an X-RNTI is used; and a step B in which the radio base station eNB transmit “direction information”, for notifying of a direction in which the data signal should be transmitted in the opportunity, to the mobile station UE#1 and the mobile station UE#2.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 16, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Mikio Iwamura, Anil Umesh
  • Publication number: 20170048918
    Abstract: A method for waking up one or more sleeping small cell base stations in a wireless communication system for serving a user equipment is described. The wireless communication system includes a plurality of small cell base stations and one or more macro base stations. A wake up signal configuration is received at a user equipment, and a wake up signal configured in accordance with the received wake up signal configuration is transmitted by the user equipment.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 16, 2017
    Inventors: Mikio IWAMURA, Emmanuel TERNON, Patrick AGYAPONG