Patents by Inventor Daisuke Nishikawa

Daisuke Nishikawa 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).

  • Patent number: 9668262
    Abstract: The present invention aims to reduce an insertion loss or the like caused by a diplexer inserted to reduce leakage from an uplink bandwidth to a downlink bandwidth of different bands, and thereby to improve a communication quality. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE is able to transmit uplink data signal via multiple carriers in multiple bands within a same sub-frame in performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB based on the simultaneous transmission capability information; and performing communications by the mobile station UE based on the scheduling information.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 30, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Yuta Sagae, Sadayuki Abeta, Hideaki Takahashi, Anil Umesh, Daisuke Nishikawa, Kazuaki Takeda
  • Publication number: 20170127389
    Abstract: A radio communication method for a radio base station, apparatus that controls transmission of an aperiodic SRS (Sounding Reference Signal) by a mobile terminal apparatus is described. The radio communication method includes selecting a specific bit information piece to report to the mobile terminal apparatus, from a table having four bit in formation pieces including one bit information piece to indicate not to trigger the aperiodic SRS and three bit information pieces to indicate to transmit the aperiodic SRS using first to third default SRS parameters respectively, the four bit information pieces all being defined in a 2-bit bit field in downlink control information to be transmitted in one subframe, and transmitting, to the mobile terminal apparatus; the first to third default SRS parameters by higher layers and the specific bit information piece by a downlink control channel.
    Type: Application
    Filed: January 6, 2017
    Publication date: May 4, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke Nishikawa, Kazuaki Takeda, Tetsushi Abe, Yoshihisa Kishiyama
  • Patent number: 9629149
    Abstract: It is an object of the present invention to adequately report the SRS transmission timing and SRS parameters to a mobile terminal apparatus, when an aperiodic SRS is adopted, and efficiently use radio resources to be used for SRS transmission. A radio base station apparatus that reports SRS transmission control information to a mobile terminal apparatus and controls transmission of an SRS by the mobile terminal apparatus, and the radio base station apparatus has an SRS setting section that selects bit information to report to the mobile terminal apparatus, from a table having bit information to indicate not to trigger the SRS and bit information to indicate to trigger the SRS using a default SRS parameter, and a reporting section that reports the bit information for the mobile terminal apparatus using a downlink control channel.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: April 18, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Daisuke Nishikawa, Kazuaki Takeda, Tetsushi Abe, Yoshihisa Kishiyama
  • Patent number: 9596699
    Abstract: An objective is to improve communication quality by reducing an insertion loss or the like of a diplexer inserted to reduce a leakage from an uplink band to a downlink band in different bands. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE can transmit uplink data signals via multiple carriers in the same sub-frame while performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB on the basis of the simultaneous transmission capability information; and performing communication by the mobile station UE on the basis of the scheduling information.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 14, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Sadayuki Abeta, Anil Umesh, Hideaki Takahashi, Yuta Sagae, Daisuke Nishikawa, Kazuaki Takeda
  • Patent number: 9586834
    Abstract: The present invention provides positive electrode active substance particles which are improved in charge/discharge capacities, cycle characteristics and thermal stability. The positive electrode active substance particles according to the present invention comprise a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m and having a specific peak intensity ratio, in which a content of Mn in the compound is controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; a content of boron in the compound is 0.01 to 1% by weight; a content of fluorine in the compound is 0.01 to 5% by weight; and a content of an element A (at least one element selected from the group consisting of Al, Mg, Ti, Zr, Ca, Fe, Zn, Mo and Bi) in the compound is 0.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: March 7, 2017
    Assignee: TODA KOGYO CORPORATION
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Kouta Sano, Osamu Sasaki, Hideaki Sadamura
  • Patent number: 9564634
    Abstract: The present invention relates to positive electrode active substance particles comprising a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m, the positive electrode active substance particles having a specific intensity ratio; a content of Mn in the positive electrode active substance particles being controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; and the positive electrode active substance particles comprising an element A (that is at least one element selected from the group consisting of Si, Zr and Y) in an amount of 0.03 to 5% by weight and having a tap density of 0.8 to 2.4 g/cc and a compressed density of 2.0 to 3.1 g/cc. The positive electrode active substance particles can be produced by calcining a mixture of precursor particles comprising the element A, Mn, Ni and/or Co, and a lithium compound.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 7, 2017
    Assignee: TODA KOGYO CORPORATION
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Taisei Inoue, Osamu Sasaki, Hideaki Sadamura
  • Patent number: 9497676
    Abstract: A user equipment 10 according to the present invention is provided with a RSSI measuring unit 107 that, with regard to a predetermined sub-frame, is configured to measure a radio quality of a serving cell and a neighboring cell for all OFDM symbols within the predetermined sub-frame and that, with regard to sub-frames other than the predetermined sub-frame, is configured to measure the radio quality of the serving cell and the neighboring cell for OFDM symbols containing a reference signal within the sub-frames.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: November 15, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroyuki Ishii, Daisuke Nishikawa, Tetsushi Abe
  • Patent number: 9426706
    Abstract: A user equipment (10) according to the present invention includes an interference removing function capable of removing interference from a neighboring cell, a RSSI measuring unit (107) that, with regard to a predetermined sub-frame, is configured to measure a radio quality of the serving cell and the neighboring cell for all OFDM symbols within the predetermined sub-frame and that, with regard to sub-frames other than the predetermined sub-frame, is configured to measure the radio quality of the serving cell and the neighboring cell for OFDM symbols containing a reference signal within the sub-frames. The RSSI measuring unit (107) measures the radio quality using the interference removing function in consideration of a received power of a reference signal, a PSS/SSS, and a PBCH signal.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: August 23, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroyuki Ishii, Daisuke Nishikawa, Tetsushi Abe
  • Patent number: 9338786
    Abstract: It is an object of the present invention to provide a reference signal transmitting method, a mobile terminal apparatus and a base station apparatus capable of reducing influences on a PDCCH even when performing transmission control over an aperiodic reference signal for measuring channel quality.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: May 10, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Daisuke Nishikawa, Kazuaki Takeda, Yoshihisa Kishiyama, Nobuhiko Miki
  • Publication number: 20160111725
    Abstract: The present invention relates to positive electrode active substance particles comprising a compound having a spinel type structure comprising at least Li, Ni and Mn, and having an Li content which is controlled such that a molar ratio of Li(Ni+Mn) therein is 0.3 to 0.65, an Ni content of 5 to 25% by weight, an Na content of 0.05 to 1.9% by weight and an S content of 0.0005 to 0.16% by weight, a sum of the Na content and the S content being 0.09 to 1.9005% by weight. The positive electrode active substance particles according to the present invention can be suitably used as positive electrode active substance particles for non-aqueous electrolyte secondary batteries which can exhibit a high discharge voltage and an excellent discharge capacity.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Kazutoshi Ishizaki, Osamu Sasaki, Hideaki Sadamura
  • Patent number: 9249034
    Abstract: Positive electrode active substance particles including a compound having at least a crystal system belonging to a space group of R?3m and a crystal system belonging to a space group of C2/m, and boron. The compound is a composite oxide comprising at least Li, Mn, and Co and/or Ni; a relative intensity ratio [(a)/(b)] of a maximum diffraction peak intensity (a) observed at 2?=20.8±1° in a powder X-ray diffraction pattern of the positive electrode active substance as measured using a Cu-Ku ray to a maximum diffraction peak intensity (b) observed at 2?=18.6±1° in the powder X-ray diffraction pattern, is 0.02 to 0.5; a content of Mn in the positive electrode active substance particles such that a molar ratio of Mn/(Ni+Co+Mn) is not less than 0.55; and the positive electrode active substance particles include boron in an amount of 0.001 to 3% by weight.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: February 2, 2016
    Assignee: TODA KOGYO CORPORATION
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Kazutoshi Ishizaki, Kazuhiko Kikuya, Teruaki Santoki, Osamu Sasaki, Hideaki Sadamura
  • Patent number: 9137789
    Abstract: To suppress and minimize changes from the method of transmitting an uplink control information in the LTE system, while supporting increases in the system band and increases in the transmission layer when there is a PUSCH signal transmitted in the same subframe, provided is a configuration for generating a UCI signal for a base station apparatus (20) in a mobile communication system having a system band comprised of a plurality of component carriers, multiplexing the UCI signal into a PUSCH signal transmitted in the same subframe as the UCI signal in a user specific component carrier used in transmission of a PUCCH signal, and transmitting the PUSCH signal into which the UCI signal is multiplexed to the base station apparatus (20).
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: September 15, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Yoshihisa Kishiyama, Teruo Kawamura, Daisuke Nishikawa
  • Publication number: 20150181591
    Abstract: To suppress and minimize changes from the method of transmitting an uplink control information in the LTE system, while supporting increases in the system band and increases in the transmission layer when there is a PUSCH signal transmitted in the same subframe, provided is a configuration for generating a UCI signal for a base station apparatus (20) in a mobile communication system having a system band comprised of a plurality of component carriers, multiplexing the UCI signal into a PUSCH signal transmitted in the same subframe as the UCI signal in a user specific component carrier used in transmission of a PUCCH signal, and transmitting the PUSCH signal into which the UCI signal is multiplexed to the base station apparatus (20).
    Type: Application
    Filed: March 3, 2015
    Publication date: June 25, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Yoshihisa Kishiyama, Teruo Kawamura, Daisuke Nishikawa
  • Publication number: 20150156772
    Abstract: A radio base station apparatus that reports SRS (Sounding Reference Signal) transmission control information to a mobile terminal apparatus and controls transmission of an SRS by the mobile terminal apparatus is described. The radio base station includes an SRS setting section configured to select bit information to report to the mobile terminal apparatus, from a table having bit information to indicate not to trigger the SRS and bit information to indicate to trigger the SRS using a default SRS parameter and a reporting section configured to report the bit information for the mobile terminal apparatus using a downlink control channel.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Daisuke Nishikawa, Kazuaki Takeda, Tetsushi Abe, Yoshihisa Kishiyama
  • Publication number: 20150103762
    Abstract: The present invention aims to reduce an insertion loss or the like caused by a diplexer inserted to reduce leakage from an uplink bandwidth to a downlink bandwidth of different bands, and thereby to improve a communication quality. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE is able to transmit uplink data signal via multiple carriers in multiple bands within a same sub-frame in performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB based on the simultaneous transmission capability information; and performing communications by the mobile station UE based on the scheduling information.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 16, 2015
    Inventors: Tooru Uchino, Yuta Sagae, Sadayuki Abeta, Hideaki Takahashi, Anil Umesh, Daisuke Nishikawa, Kazuaki Takeda
  • Patent number: 9008019
    Abstract: To suppress and minimize changes from the method of transmitting an uplink control information in the LTE system, while supporting increases in the system band and increases in the transmission layer when there is a PUSCH signal transmitted in the same subframe, provided is a configuration for generating a UCI signal for a base station apparatus (20) in a mobile communication system having a system band comprised of a plurality of component carriers, multiplexing the UCI signal into a PUSCH signal transmitted in the same subframe as the UCI signal in a user specific component carrier used in transmission of a PUCCH signal, and transmitting the PUSCH signal into which the UCI signal is multiplexed to the base station apparatus (20).
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 14, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Yoshihisa Kishiyama, Teruo Kawamura, Daisuke Nishikawa
  • Patent number: 8986546
    Abstract: To promote mixture of fluids on a plurality of stages, flow channels include a plurality of merging portions which penetrate from a top surface to a back surface of a substrate. An end of each of the sub channels is disposed so as to overlap the main channel at each of positions separated along the direction in which the main channel extends, and each of the merging portions communicates the main channels and the ends of the sub channels with each other, thereby changing a flow direction of the second fluid flowing through the sub channels to the thickness direction of the substrate, and merges the second fluid with the first fluid flowing through the main channels.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: March 24, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Koji Noishiki, Makoto Nishimura, Takeshi Yamashita, Daisuke Nishikawa
  • Publication number: 20150060725
    Abstract: The present invention relates to positive electrode active substance particles comprising a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m, the positive electrode active substance particles having a specific intensity ratio; a content of Mn in the positive electrode active substance particles being controlled such that a molar ratio of Mn/(Ni+Co+Mn) therein is not less than 0.55; and the positive electrode active substance particles comprising an element A (that is at least one element selected from the group consisting of Si, Zr and Y) in an amount of 0.03 to 5% by weight and having a tap density of 0.8 to 2.4 g/cc and a compressed density of 2.0 to 3.1 g/cc. The positive electrode active substance particles can be produced by calcining a mixture of precursor particles comprising the element A, Mn, Ni and/or Co, and a lithium compound.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 5, 2015
    Inventors: Manabu Yamamoto, Daisuke Nishikawa, Taisei Inoue, Osamu Sasaki, Hideaki Sadamura
  • Patent number: 8958355
    Abstract: To provide a radio base station apparatus, mobile terminal apparatus and transmission power control method for enabling conventional inter-cell interference reduction techniques and ULCoMP to be used together, a radio base station apparatus of the invention is characterized by having a ULCoMP processing section (2085) that applies ULCoMP to a mobile terminal (1001) when a difference (PL2?PL1) between a pass loss PL1 between the mobile terminal (1001) and a base station apparatus (2001) connected to the mobile terminal (1001) and a pass loss PL2 between the mobile terminal (1001) and a base station apparatus (2002) with the lowest pass loss for the mobile terminal (1001) is within a predetermined range, and a transmission power control section (2089) that performs transmission power control for application of ULCoMP when the ULCoMP is applied, while performing transmission power control for non-application of the ULCoMP when the ULCoMP is not applied.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: February 17, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Daisuke Nishikawa, Yoshihisa Kishiyama
  • Publication number: 20150045084
    Abstract: Downlink reception power from a second base station is adjusted upward using a cell range expansion offset value. Based on the downlink reception power, a connection destination base station for a user device is selected. A parameter for calculating a target uplink reception characteristic at the second base station is set according to the cell range expansion offset value corresponding to the second base station. Based on the parameter, the target uplink reception characteristic of radio waves from the user device is calculated. Uplink transmission power of the user device is controlled so that an uplink reception characteristic of radio waves from the user device approaches the target uplink reception characteristic.
    Type: Application
    Filed: January 15, 2013
    Publication date: February 12, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Akihito Morimoto, Nobuhiko Miki, Daisuke Nishikawa, Hiroyuki Ishii