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).
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Publication number: 20250093949Abstract: 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: ApplicationFiled: July 20, 2022Publication date: March 20, 2025Applicant: NTT DOCOMO, INC.Inventors: Taishi YAMAMOTO, Eriko OSEKI, Kouki HAYASHI, Osamu GOTO, Mikio IWAMURA, Shinji KIMURA, Masayuki YOKOO
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Publication number: 20240428289Abstract: 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: ApplicationFiled: September 30, 2022Publication date: December 26, 2024Applicant: NTT DOCOMO, INC.Inventors: Ryousuke KURACHI, Kengo MATSUMOTO, Mikio IWAMURA, Masayuki YOKOO, Fuminori SHINSEI, Shinji KIMURA
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Publication number: 20240377641Abstract: 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: ApplicationFiled: September 15, 2022Publication date: November 14, 2024Applicant: NTT DOCOMO, INC.Inventors: Mikiko NAKANISHI, Mikio IWAMURA, Yasuo MORINAGA
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Publication number: 20240363044Abstract: 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: ApplicationFiled: June 9, 2022Publication date: October 31, 2024Applicant: NTT DOCOMO, INC.Inventors: Kei ISHIGURO, Tomohito YAMASAKI, Mikio IWAMURA, Masayuki YOKOO, Fuminori SHINSEI
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Publication number: 20230351703Abstract: 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: ApplicationFiled: March 3, 2021Publication date: November 2, 2023Applicant: NTT DOCOMO, INC.Inventors: Kouki HAYASHI, Taishi YAMAMOTO, Shinji KIMURA, Mikio IWAMURA, Osamu GOTO, Eriko OSEKI
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Patent number: 11656458Abstract: 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: GrantFiled: July 21, 2020Date of Patent: May 23, 2023Assignees: NTT DOCOMO, Inc.Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuoki Ichikawa, Mikio Iwamura
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Patent number: 11601834Abstract: 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: GrantFiled: February 15, 2011Date of Patent: March 7, 2023Assignee: NTT DOCOMO, INC.Inventors: Hiroyuki Ishii, Mikio Iwamura
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Publication number: 20210026135Abstract: 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: ApplicationFiled: July 21, 2020Publication date: January 28, 2021Inventors: Fusao Ishii, Mikiko Nakanishi, Kazuoki Ichikawa, Mikio Iwamura
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Publication number: 20200374840Abstract: 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: ApplicationFiled: January 31, 2018Publication date: November 26, 2020Applicant: NTT DOCOMO, INC.Inventors: Kazuaki Takeda, Satoshi Nagata, Mikio Iwamura
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Patent number: 10411938Abstract: 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: GrantFiled: April 1, 2016Date of Patent: September 10, 2019Assignee: NTT DOCOMO, INC.Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
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Patent number: 10182393Abstract: 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: GrantFiled: May 27, 2016Date of Patent: January 15, 2019Assignee: NTT DOCOMO, INC.Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
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Publication number: 20180375704Abstract: 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: ApplicationFiled: April 1, 2016Publication date: December 27, 2018Applicant: NTT DOCOMO, INC.Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
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Publication number: 20180367353Abstract: 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: ApplicationFiled: April 1, 2016Publication date: December 20, 2018Applicant: NTT DOCOMO, INC.Inventors: Petra Weitkemper, Katsutoshi Kusume, Jamal Bazzi, Mikio Iwamura
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Patent number: 10085186Abstract: 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: GrantFiled: May 27, 2016Date of Patent: September 25, 2018Assignee: NTT DOCOMO, INC.Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
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Patent number: 10003992Abstract: 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: GrantFiled: May 27, 2016Date of Patent: June 19, 2018Assignee: NTT DOCOMO, INC.Inventors: Patrick Agyapong, Emmanuel Ternon, Liang Hu, Katsutoshi Kusume, Mikio Iwamura
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Patent number: 9999031Abstract: 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: GrantFiled: October 22, 2015Date of Patent: June 12, 2018Assignee: NTT DOCOMO, INC.Inventors: Mikio Iwamura, Tooru Uchino
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Patent number: 9894566Abstract: 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: GrantFiled: December 10, 2009Date of Patent: February 13, 2018Assignee: NTT DOCOMO, INC.Inventors: Mikio Iwamura, Minami Ishii
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Patent number: 9706474Abstract: 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: GrantFiled: May 21, 2013Date of Patent: July 11, 2017Assignee: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Mikio Iwamura, Minami Ishii, Mutsumi Ishimoto
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Publication number: 20170078057Abstract: 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: ApplicationFiled: November 29, 2016Publication date: March 16, 2017Applicant: NTT DOCOMO, INC.Inventors: Mikio Iwamura, Anil Umesh
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Publication number: 20170048918Abstract: 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: ApplicationFiled: October 28, 2016Publication date: February 16, 2017Inventors: Mikio IWAMURA, Emmanuel TERNON, Patrick AGYAPONG