Patents by Inventor Yukio Haseba
Yukio Haseba 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: 20240306161Abstract: A system is disclosed in which a base station defines a search space, in which a communication device can search for control information. The search space is characterised by at least first information which is related to a starting subframes of a plurality of portions of the search space and second information which is related to a periodicity between respective starting subframes, each portion representing a different candidate for the transmission of control information. The base station obtains a parameter indicating both the initial starting subframe and the periodicity and transmits the generated parameter to the communication device.Type: ApplicationFiled: May 15, 2024Publication date: September 12, 2024Applicant: NEC CorporationInventors: Yassin Aden AWAD, Yukio HASEBA
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Patent number: 12041632Abstract: A system is disclosed in which a base station defines a search space, in which a communication device can search for control information. The search space is characterised by at least first information which is related to a starting subframes of a plurality of portions of the search space and second information which is related to a periodicity between respective starting subframes, each portion representing a different candidate for the transmission of control information. The base station obtains a parameter indicating both the initial starting subframe and the periodicity and transmits the generated parameter to the communication device.Type: GrantFiled: April 6, 2022Date of Patent: July 16, 2024Assignee: NEC CORPORATIONInventors: Yassin Aden Awad, Yukio Haseba
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Publication number: 20220232540Abstract: A system is disclosed in which a base station defines a search space, in which a communication device can search for control information. The search space is characterised by at least first information which is related to a starting subframes of a plurality of portions of the search space and second information which is related to a periodicity between respective starting subframes, each portion representing a different candidate for the transmission of control information. The base station obtains a parameter indicating both the initial starting subframe and the periodicity and transmits the generated parameter to the communication device.Type: ApplicationFiled: April 6, 2022Publication date: July 21, 2022Applicant: NEC CorporationInventors: Yassin Aden AWAD, Yukio Haseba
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Patent number: 11330574Abstract: A system is disclosed in which a base station defines a search space, in which a communication device can search for control information. The search space is characterised by at least first information which is related to a starting subframes of a plurality of portions of the search space and second information which is related to a periodicity between respective starting subframes, each portion representing a different candidate for the transmission of control information. The base station obtains a parameter indicating both the initial starting subframe and the periodicity and transmits the generated parameter to the communication device.Type: GrantFiled: February 2, 2017Date of Patent: May 10, 2022Assignee: NEC CORPORATIONInventors: Yassin Aden Awad, Yukio Haseba
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Publication number: 20190069277Abstract: A system is disclosed in which a base station defines a search space, in which a communication device can search for control information. The search space is characterised by at least first information which is related to a starting subframes of a plurality of portions of the search space and second information which is related to a periodicity between respective starting subframes, each portion representing a different candidate for the transmission of control information. The base station obtains a parameter indicating both the initial starting subframe and the periodicity and transmits the generated parameter to the communication device.Type: ApplicationFiled: February 2, 2017Publication date: February 28, 2019Applicant: NEC CORPORATIONInventors: Yassin Aden AWAD, Yukio HASEBA
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Patent number: 7620130Abstract: A wireless communication apparatus with a plurality of antennas which receive a wireless reception signal from a secondary communication apparatus, and a combiner which combines signals from the plurality of antennas to form a combined signal or selects one of the signals from the plurality of antennas. A wireless communication apparatus with a plurality of antennas which transmits a wireless transmission signal to a secondary communication apparatus and a divider which divides a transmission signal into plurality of transmission signals to be transmitted by the plurality antennas or selects one of the plurality of antennas to transmit the transmission signal.Type: GrantFiled: March 4, 2005Date of Patent: November 17, 2009Assignee: NEC CorporationInventors: Motoya Iwasaki, Osami Nishimura, Sei Hirade, Yukio Haseba
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Patent number: 7599319Abstract: A radio base station which receives a first and a second communication channel from a radio communications device comprises a control circuit for detecting the reception quality of the first communication channel, conducting an inner-loop power control for controlling transmission power of the first communication channel from the radio communications device based on the reception quality and an inner-loop power control target value, and adding a power control offset to the inner-loop power control target value before starting a communication through the second communication channel.Type: GrantFiled: November 3, 2005Date of Patent: October 6, 2009Assignee: NEC CorporationInventors: Daisuke Kondou, Motoya Iwasaki, Hisashi Kawabata, Osami Nishimura, Yukio Haseba, Emiko Sakuma
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Patent number: 7583966Abstract: An active set control method for handover operation in a CDMA communications system in which propagation conditions of an uplink channel and a downlink channel for an access link of cell are different, provides that when a cell is deleted from the active set based on a request of a base station which has detected a degraded signal of the uplink channel, a predetermined period of time is to be counted for inhibiting addition of the same cell in the active set based on a request of a mobile terminal which has detected a satisfied signal of the downlink channel, thereby preventing the deletion and addition of the cell in the active set from successive operations in a short time.Type: GrantFiled: March 20, 2006Date of Patent: September 1, 2009Assignee: NEC CorporationInventors: Yukio Haseba, Daisuke Kondo, Emiko Sakuma, Osami Nishimura, Hisashi Kawabata, Motoya Iwasaki
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Publication number: 20090042512Abstract: Base stations (100-1 to 100-3) communicate with terminals (102-1 to 102-2), divides a used frequency into a plurality of frequency blocks, and assigns the divided frequency block to terminal (102-1 to 102-2), in which a position at which terminal (102-1 to 102-2) exists is determined, and if it is determined that terminal (102-1 to 102-2) exists at the edge of cell (101-1 to 101-3), the assigned frequency block is set as a cell edge frequency block that is to be dynamically assigned at the edge of cell (101-1 to 101-3). In addition, if the cell edge frequency block has already been assigned to another terminal, this cell edge frequency block is assigned to terminal (102-1 to 102-2).Type: ApplicationFiled: November 14, 2006Publication date: February 12, 2009Inventors: Yukio Haseba, Motoya Iwasaki, Hisashi Kawabata, Osami Nishimura, Kengo Oketani, Daisuke Kondou
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Publication number: 20070298803Abstract: The present invention provides a radio network system including a mobile station that leads in determining whether handover can be executed or not, wherein the handover is for switching a handover origin radio base station to a handover destination radio base station, wherein the handover destination radio base station reserves resources required for the handover based on a handover request from the mobile station and information on the mobile station required for the handover, and establishes a user plane path for transferring user information between itself and the handover origin node B.Type: ApplicationFiled: June 19, 2007Publication date: December 27, 2007Applicant: NEC CORPORATIONInventors: HISASHI KAWABATA, Kengo Oketani, Yukio Haseba, Daisuke Kondo, Osami Nishimura
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Publication number: 20070004416Abstract: Disclosed is a mobile terminal transmission scheduling method for a mobile communication system. In each cell of this system, adjustment regions are provided externally adjacent to a soft-hand-over region. A mobile terminal (MT), upon entering this adjustment region, transmits an adjustment region scheduling request to a radio network controller (RNC) via a base station (BS) to which the MT currently belongs. The RNC transmits a scheduling adjustment start request to this BS. Upon receiving this request, this BS moves to an adjustment scheduling operating state and adjusts a scheduling control signal internally generated in the BS. The MT, upon exiting this adjustment region, transmits an adjustment region scheduling release request to the RNC via a BS to which the MT currently belongs. The RNC transmits a scheduling adjustment end request to this BS. Upon receiving this end request, this BS returns to a normal scheduling operating state.Type: ApplicationFiled: June 13, 2006Publication date: January 4, 2007Applicant: NEC CORPORATIONInventors: Osami Nishimura, Hisashi Kawabata, Emiko Sakuma, Yukio Haseba, Daisuke Kondo
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Publication number: 20060246905Abstract: Disclosed is a mobile terminal transmission scheduling method for use in a base station within a mobile communication network. This method is executed in the following process. A base station acquires position information and a speed of a mobile terminal. When the base station judges that the mobile terminal is within the cell and outside the specified region and also judges that the speed is large, the base station outputs a scheduling adjustment indication signal. The base station normally transmits to a mobile terminal a scheduling control signal as it is that is generated within the basestation. Further, when the scheduling adjustment indication signal is generated, the base station transmits to the mobile terminal an additional scheduling control signal for instructing the mobile terminal to change its transmission rate.Type: ApplicationFiled: April 24, 2006Publication date: November 2, 2006Inventors: Emiko Sakuma, Hisashi Kawabata, Osami Nishimura, Yukio Haseba, Daisuke Kondo
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Publication number: 20060223538Abstract: An active set control method for handover operation in a CDMA communications system in which propagation conditions of an uplink channel and a downlink channel for an access link of cell are different, provides that when a cell is deleted from the active set based on a request of a base station which has detected a degraded signal of the uplink channel, a predetermined period of time is to be counted for inhibiting addition of the same cell in the active set based on a request of a mobile terminal which has detected a satisfied signal of the downlink channel, thereby preventing the deletion and addition of the cell in the active set from successive operations in a short time.Type: ApplicationFiled: March 20, 2006Publication date: October 5, 2006Applicant: NEC CORPORATIONInventors: Yukio Haseba, Daisuke Kondo, Emiko Sakuma, Osami Nishimura, Hisashi Kawabata, Motoya Iwasaki
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Publication number: 20060116156Abstract: Each base station measures the reception states of an uplink high-speed signal from mobile terminals and periodically reports the measurement results to a radio network controller (RNC). The RNC determines cells that are to be deleted from an active set based on the reception states (for example, the reception SIR) that are reported from each base station. The RNC transmits to one base station and mobile terminal a radio line release request for releasing the radio line of the uplink high-speed signal that has been set to a cell that has been determined as a cell to be deleted from the active set. The base station and mobile terminal that have received the radio line release request from the RNC each release the radio line, whereby the cells of other base stations are eliminated from the active set.Type: ApplicationFiled: November 22, 2005Publication date: June 1, 2006Inventors: Yukio Haseba, Daisuke Kondo, Emiko Sakuma, Osami Nishimura, Hisashi Kawabata, Motoya Iwasaki
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Publication number: 20060092870Abstract: A radio base station which receives a first and a second communication channel from a radio communications device comprises a control circuit for detecting the reception quality of the first communication channel, conducting an inner-loop power control for controlling transmission power of the first communication channel from the radio communications device based on the reception quality and an inner-loop power control target value, and adding a power control offset to the inner-loop power control target value before starting a communication through the second communication channel.Type: ApplicationFiled: November 3, 2005Publication date: May 4, 2006Inventors: Daisuke Kondou, Motoya Iwasaki, Hisashi Kawabata, Osami Nishimura, Yukio Haseba, Emiko Sakuma
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Publication number: 20050255889Abstract: A control method comprises, transmitting wireless signals to an overall area assigned to said base station area; receiving wireless signals from the overall area; communicating via a first wireless channel with a terminal station located within the overall area; transmitting wireless signals to a limited area which lies within the overall area; receiving wireless signals from the limited area; and communicating via a second channel with the terminal station when the terminal station is located within the limited area.Type: ApplicationFiled: April 11, 2005Publication date: November 17, 2005Inventors: Yukio Haseba, Motoya Iwasaki, Osami Nishimura, Sei Hirade
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Publication number: 20050201482Abstract: A wireless communication apparatus comprises: a plurality of antenna means for receiving a wireless reception signal from a secondary communication apparatus; and a combining means for combining signals from the plurality of antennas to from a combined signal or for selecting one of the signals from the plurality of antennas. A wireless communication apparatus comprises: a plurality of antenna means for transmitting a wireless transmission signal to a secondary communication apparatus; and a dividing means for dividing a transmission signal into plurality of transmission signals to be transmitted by the plurality antennas means or for selecting one of the plurality of antenna means to transmit the transmission signal.Type: ApplicationFiled: March 4, 2005Publication date: September 15, 2005Inventors: Motoya Iwasaki, Osami Nishimura, Sei Hirade, Yukio Haseba