Patents by Inventor Daisuke Tanigawa
Daisuke Tanigawa 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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Patent number: 11946147Abstract: A thermal barrier coating includes a bond coat layer deposited on a substrate, and a ceramic layer deposited on the bond coat layer. The ceramic layer includes a first layer having a porosity of 10% or more and 15% or less, and a second layer having a porosity of 0.5% or more and 9.0% or less and deposited on the first layer.Type: GrantFiled: February 6, 2019Date of Patent: April 2, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Taiji Torigoe, Yoshifumi Okajima, Daisuke Kudo, Masahiko Mega, Shuji Tanigawa
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Patent number: 8792928Abstract: A radio base station includes: a table storage unit storing a table in which an E-TFCI indicating a transport format combination indicator of the physical data channel to be transmitted by a mobile station is associated with ?ed that is used to determine a SG and is an offset value of transmission power of the physical data channel to be transmitted by the mobile station; a parameter selector selecting the ?ed associated with the E-TFCI from the table; and a communication controller determining a SG based on the ?ed thus selected and an E-TFCI associated with the selected ?ed, and controlling transmission power of the mobile station by using the SG thus determined.Type: GrantFiled: January 14, 2009Date of Patent: July 29, 2014Assignee: NTT DoCoMo, Inc.Inventors: Tatsuro Yajima, Hidehiko Oyane, Akihito Hanaki, Daisuke Tanigawa
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Patent number: 8670767Abstract: The present invention provides a radio base station apparatus that is capable of freely expanding an area, improving the degree of freedom in designing of the area significantly and reducing the equipment investment. The radio base station apparatus includes: a plurality of transmission/reception units which are remotely installed in a service area and to which necessary numbers of carriers and sectors are assigned in accordance with the respective installation areas; a modulation/demodulation unit which can set/modify the soft handover enabled range and modulates/demodulates a signal transmitted/received to/from the transmission reception units; and a selector switch which is connected to the transmission/reception units remotely installed in the service area via cables so as to select connections between the modulation/demodulation unit and the transmission/reception units.Type: GrantFiled: August 21, 2009Date of Patent: March 11, 2014Assignee: NTT DoCoMo, Inc.Inventors: Hidehiko Oyane, Daisuke Tanigawa, Akihiro Hikuma
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Patent number: 8532579Abstract: A radio equipment in a radio base station is configured to measure received signal strength of an uplink signal transmitted by a mobile station and includes a TRX function unit configured to transmit IQ data and control information to a radio equipment controller by using a frame including an IQ data region for mapping the IQ data and a control region for mapping the control information, the IQ data being obtained by subjecting the uplink signal to demodulation processing (orthogonal demodulation processing), and the TRX function unit is configured to map information indicating the received signal strength (RSSI) measured by the measurement unit to a fixed region in the control region.Type: GrantFiled: November 10, 2009Date of Patent: September 10, 2013Assignee: NTT DoCoMo, Inc.Inventors: Daisuke Tanigawa, Hidehiko Oyane
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Patent number: 8514702Abstract: A radio base station wherein, when a radio equipment control detects an uplink communication failure on a physical circuit, a downlink communication processing unit is configured to transmit a downlink IQ data for all combinations of antennae and carriers to a radio equipment with all values of the downlink IQ data set to “0,” and a downlink radio equipment is configured to stop a transmission of a downlink signal of all the carriers through all the antenna when the downlink IQ data whose values are all “0” is received.Type: GrantFiled: January 20, 2010Date of Patent: August 20, 2013Assignee: NTT DoCoMo, Inc.Inventors: Daisuke Tanigawa, Hidehiko Oyane
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Patent number: 8401486Abstract: Wireless base station equipment including a plurality of amplifiers and modulation and demodulation equipment having a monitoring control link with each of the plurality of amplifiers. The modulation and demodulation equipment terminates communications with the plurality of amplifiers and performs a monitoring control of each of the plurality of amplifiers. Each of the of amplifiers includes a plurality of cards as respective functional sections and a transmission and reception-integrated section that collects transmission and reception signals input to and output from each of the plurality of cards and terminates communication with the modulation and demodulation equipment. The modulation and demodulation equipment obtains, from a transmission and reception-integrated section of a corresponding amplifier via a monitoring control link with the corresponding amplifier, information related to the corresponding amplifier.Type: GrantFiled: August 28, 2009Date of Patent: March 19, 2013Assignee: NTT DoCoMo, Inc.Inventors: Daisuke Tanigawa, Hidehiko Oyane
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Patent number: 8385892Abstract: A radio base station 200 includes a call process controller 105 and a baseband processor 109. The call process controller 105 notifies the baseband processor 109 of an offset of the baseband resource when accepting the priority call. The baseband processor 109 changes the baseband resource to be allocated to the normal call in a predetermined cycle and applies a resource use restriction based on the offset notified from the call process controller 105, the resource use restriction restricting the baseband resource to be allocated to the normal call within a range defined by subtracting the offset from a total baseband resource.Type: GrantFiled: December 10, 2008Date of Patent: February 26, 2013Assignee: NTT DoCoMo, Inc.Inventors: Hidehiko Oyane, Daisuke Tanigawa, Tatsuro Yajima
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Publication number: 20120307713Abstract: A relay device 100 includes a first connecting unit configured to be connected to a REC21 via a logical link 11h, a second connecting unit configured to be connected to a REC22 via a logical link L12h, a radio equipment device connecting unit configured to be connected to RE30 via a logical link L21h. Further, the relay device 100 includes a data migrating unit configured to migrate the data between the logical link L11h and the logical link 12h and between the logical link L12h and the logical link L21h. The logical link L21h is shared by the data which is transmitted and received by the REC 21, 22, and the data migrating unit migrates the data according to a predetermined standardized interface specification (CPRI).Type: ApplicationFiled: December 16, 2010Publication date: December 6, 2012Applicant: NTT DOCOMO, INC.Inventors: Takayuki Watanabe, Yoshitsugu Shimazu, Hidehiko Oyane, Daisuke Tanigawa
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Publication number: 20120287843Abstract: A relay device 100 transmits, when receiving the Hyper Frame (HFN) from a RE30, the predetermined information, such as control information included in the received Hyper Frame by including the predetermined information in the frame to be transmitted from a relay device 100 to a REC21. Specifically, the relay device 100 transmits the predetermined information by including the predetermined information in the Hyper Frame to be transmitted to the REC 21 within a predetermined time period after a time point at which the Hyper Frame is received from the RE30. Further, the RE30 transmits the Hyper Frame to the relay device 100 in a cycle shorter than a transmission cycle of the Hyper Frame to be set in a case where the RE30 is directly connected to the REC21.Type: ApplicationFiled: December 16, 2010Publication date: November 15, 2012Applicant: NTT DOCOMO ,INC.Inventors: Takayuki Watanabe, Daisuke Tanigawa
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Patent number: 8271041Abstract: The radio base station includes a monitoring controller for determining whether to switch between BB cards; and a baseband signal processor for transmitting a suspension request to suspend the transmission of the user data when it is determined that the BB cards are switched, and performing the handover of a processing between the BB cards based on the transmission of the suspension request. The baseband signal processor transmits a capacity allocation or a zero grant requesting to set the transmission rate of the user data to zero.Type: GrantFiled: January 7, 2009Date of Patent: September 18, 2012Assignee: NTT DoCoMo, Inc.Inventors: Daisuke Tanigawa, Hidehiko Oyane, Akihito Hanaki, Tatsuro Yajima
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Patent number: 8224386Abstract: Radio base station equipment is connected to radio transmitting/receiving equipment provided in sectors (S), into which a communication area is divided, by an optical fiber (30), and performs radio communication with mobile terminals located in the respective sectors (S) via the radio transmitting/receiving equipment wherein a delay processing section delays a signal for each sector (S) according to a delay correction value obtained by subtracting a delay amount in each sector (S) from a maximum delay amount of a delay amount measured for each sector (S) and a baseband processing section obtains the signal from each sector (S) delayed by the delay processing section by setting a reception window at a position corresponding to the maximum delay amount.Type: GrantFiled: June 2, 2009Date of Patent: July 17, 2012Assignee: NTT DoCoMo, Inc.Inventors: Hidehiko Oyane, Daisuke Tanigawa
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Publication number: 20110317550Abstract: A radio base station wherein, when a radio equipment control detects an uplink communication failure on a physical circuit, a downlink communication processing unit is configured to transmit a downlink IQ data for all combinations of antennae and carriers to a radio equipment with all values of the downlink IQ data set to “0,” and a downlink radio equipment is configured to stop a transmission of a downlink signal of all the carriers through all the antenna when the downlink IQ data whose values are all “0” is received.Type: ApplicationFiled: January 20, 2010Publication date: December 29, 2011Applicant: NTT DOCOMO, INC.Inventors: Daisuke Tanigawa, Hidehiko Oyane
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Publication number: 20110269403Abstract: A radio equipment in a radio base station is configured to measure received signal strength of an uplink signal transmitted by a mobile station and includes a TRX function unit configured to transmit IQ data and control information to a radio equipment controller by using a frame including an IQ data region for mapping the IQ data and a control region for mapping the control information, the IQ data being obtained by subjecting the uplink signal to demodulation processing (orthogonal demodulation processing), and the TRX function unit is configured to map information indicating the received signal strength (RSSI) measured by the measurement unit to a fixed region in the control region.Type: ApplicationFiled: November 10, 2009Publication date: November 3, 2011Applicant: NTT DOCOMO, INC.Inventors: Daisuke Tanigawa, Hidehiko Oyane
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Publication number: 20110183677Abstract: The present invention provides a radio base station apparatus that is capable of freely expanding an area, improving the degree of freedom in designing of the area significantly and reducing the equipment investment. The radio base station apparatus includes: a plurality of transmission/reception units which are remotely installed in a service area and to which necessary numbers of carriers and sectors are assigned in accordance with the respective installation areas; a modulation/demodulation unit which can set/modify the soft handover enabled range and modulates/demodulates a signal transmitted/received to/from the transmission reception units; and a selector switch which is connected to the transmission/reception units remotely installed in the service area via cables so as to select connections between the modulation/demodulation unit and the transmission/reception units.Type: ApplicationFiled: August 21, 2009Publication date: July 28, 2011Applicant: NTT DOCOMO, INC.Inventors: Hidehiko Oyane, Daisuke Tanigawa, Akihiro Hikuma
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Publication number: 20110135300Abstract: Radio base station equipment is connected to radio transmitting/receiving equipment provided in sectors (S), into which a communication area is divided, by an optical fiber (30), and performs radio communication with mobile terminals located in the respective sectors (S) via the radio transmitting/receiving equipment wherein a delay processing section delays a signal for each sector (S) according to a delay correction value obtained by subtracting a delay amount in each sector (S) from a maximum delay amount of a delay amount measured for each sector (S) and a baseband processing section obtains the signal from each sector (S) delayed by the delay processing section by setting a reception window at a position corresponding to the maximum delay amount.Type: ApplicationFiled: June 2, 2009Publication date: June 9, 2011Applicant: NTT DOCOMO, INC.Inventors: Hidehiko Oyane, Daisuke Tanigawa
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Publication number: 20110009100Abstract: A radio base station 200 includes a call process controller 105 and a baseband processor 109. The call process controller 105 notifies the baseband processor 109 of an offset of the baseband resource when accepting the priority call. The baseband processor 109 changes the baseband resource to be allocated to the normal call in a predetermined cycle and applies a resource use restriction based on the offset notified from the call process controller 105, the resource use restriction restricting the baseband resource to be allocated to the normal call within a range defined by subtracting the offset from a total baseband resource.Type: ApplicationFiled: December 10, 2008Publication date: January 13, 2011Applicant: NTT DoCoMo, Inc.Inventors: Hidehiko Oyane, Daisuke Tanigawa, Tatsuro Yajima
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Publication number: 20100056065Abstract: To allow an amplifier to be added or changed to perform a maintenance monitoring control smoothly without causing restriction on the card configuration of the amplifier and the functional section and without causing any influence on the operating amplifier (e.g., suspension of the service). In wireless base station equipment according to an embodiment of the present invention, the amplifiers 3 and the modulation and demodulation equipment 1 have therebetween a monitoring control link for each sector. Each sector is subjected to a monitoring control via the link. The modulation and demodulation equipment 1 and the amplifier 3 of each sector connected thereto have transmission and reception-integrated sections 1A and 3A for terminating the communication, respectively. The information collected in the respective transmission and reception-integrated sections 1A and 3A is transmitted and received among the respective transmission and reception-integrated sections 1A and 3A via the respective links.Type: ApplicationFiled: August 28, 2009Publication date: March 4, 2010Applicant: NTT DoCoMo, Inc.Inventors: Daisuke TANIGAWA, Hidehiko Oyane
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Publication number: 20090181677Abstract: The radio base station includes a monitoring controller for determining whether to switch between BB cards; and a baseband signal processor for transmitting a suspension request to suspend the transmission of the user data when it is determined that the BB cards are switched, and performing the handover of a processing between the BB cards based on the transmission of the suspension request. The baseband signal processor transmits a capacity allocation or a zero grant requesting to set the transmission rate of the user data to zero.Type: ApplicationFiled: January 7, 2009Publication date: July 16, 2009Applicant: NTT DoCoMo, Inc.Inventors: Daisuke Tanigawa, Hidehiko Oyane, Akihito Hanaki, Tatsuro Yajima
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Publication number: 20090181714Abstract: A radio base station includes: a table storage unit storing a table in which an E-TFCI indicating a transport format combination indicator of the physical data channel to be transmitted by a mobile station is associated with ?ed that is used to determine a SG and is an offset value of transmission power of the physical data channel to be transmitted by the mobile station; a parameter selector selecting the ?ed associated with the E-TFCI from the table; and a communication controller determining a SG based on the ?ed thus selected and an E-TFCI associated with the selected ?ed, and controlling transmission power of the mobile station by using the SG thus determined.Type: ApplicationFiled: January 14, 2009Publication date: July 16, 2009Applicant: NTT DoCoMo, Inc.Inventors: Tatsuro Yajima, Hidehiko Oyane, Akihito Hanaki, Daisuke Tanigawa