Patents by Inventor Katsumi Tanoue

Katsumi Tanoue 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: 20180376533
    Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).
    Type: Application
    Filed: June 28, 2018
    Publication date: December 27, 2018
    Inventors: Genichiro SEKINE, Ichiro KANEKO, Katsumi TANOUE
  • Patent number: 10039155
    Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: July 31, 2018
    Assignee: NEC Corporation
    Inventors: Genichiro Sekine, Ichiro Kaneko, Katsumi Tanoue
  • Publication number: 20160345383
    Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).
    Type: Application
    Filed: August 8, 2016
    Publication date: November 24, 2016
    Inventors: Genichiro SEKINE, Ichiro KANEKO, Katsumi TANOUE
  • Patent number: 9439241
    Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 6, 2016
    Assignee: NEC Corporation
    Inventors: Genichiro Sekine, Ichiro Kaneko, Katsumi Tanoue
  • Publication number: 20150018044
    Abstract: A base station system includes a base station device (1), a wireless transmission device (2) and a data transfer device (3), each of which can be installed outdoors. Enclosures (12, 22 and 32) of the devices (1-3) each provide a degree of protection from water and dust ingress necessary for being installed outdoors. The enclosure (12) of the base station device (1) accommodates electronic equipment (11) functioning as a base station. The enclosure (22) of the wireless transmission device (2) accommodates electronic equipment (21) functioning as a radio station to perform wireless transmission with the other device for connecting the base station device (1) to a mobile backhaul network. The enclosure (32) of the data transfer device (3) accommodates electronic equipment (31) functioning as a router or a switch to transfer data packets or data flames between the base station device (1) and the wireless transmission device (2).
    Type: Application
    Filed: January 31, 2013
    Publication date: January 15, 2015
    Applicant: NEC Corporation
    Inventors: Genichiro Sekine, Ichiro Kaneko, Katsumi Tanoue
  • Patent number: 7486934
    Abstract: A propagation delay-propagation loss table is stored in advance in a radio base station, a first area and a second area being set in advance in the propagation delay-propagation loss table, the first area being predicted to contain the relation between the propagation delay and propagation loss when a mobile station is not within the service area of a repeater, while in the second area the effect of the control delay and power gain caused by the repeater upon this first area is taken into consideration. In the radio base station, it is then determined that a mobile station is within the service area of the radio base station when the relation between the propagation loss value that has been reported from the mobile station and the propagation delay that has been calculated is contained within the first area, and it is determined that the mobile station is within the service area of the repeater when the relation is contained within the second area.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 3, 2009
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Patent number: 7308262
    Abstract: A controller in a wireless communication system for a mobile station simultaneously communicating with a plurality of base stations comprises a receiver receiving a plurality of signals, relating to a fist communication type, from a plurality of base stations, and receiving a signal, relating to a second communication type different from the first communication type, from a specific base station; and a transmitter, coupled to the receiver, transmitting a control signal generated on the basis of the signal relating to the second communication type received by the receiver from the specific base station, to the plurality of base stations and the specific base station.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: December 11, 2007
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Publication number: 20070184777
    Abstract: An object of the present invention is to provide a system for determining whether or not a mobile unit is present in the service area of a repeater through a simple system.
    Type: Application
    Filed: April 12, 2005
    Publication date: August 9, 2007
    Inventor: Katsumi Tanoue
  • Publication number: 20070178931
    Abstract: A CDMA mobile communication system is disclosed in which a reference value, an uplink signal SIR value, which is used in a closed-loop transmission power control is updated in base transceiver stations. The uplink signal target SIR value is updated independently at base transceiver stations and not at the base station controller. At the base transceiver station, when a decoder detects a loss of synchronization of a user signal from a mobile station, a demodulator adds a step value ASIR that has been set in advance to the uplink signal target SIR value that has been reported from the base station controller to obtain an uplink signal target SIR provisional value. When this uplink signal target SIR provisional value is smaller than an uplink signal target SIR maximum value that has been set in advance, the uplink signal target SIR value is updated to the uplink signal target SIR provisional value.
    Type: Application
    Filed: March 28, 2007
    Publication date: August 2, 2007
    Inventor: Katsumi Tanoue
  • Patent number: 7203510
    Abstract: A CDMA mobile communication system is disclosed in which a reference value, an uplink signal SIR value, which is used in a closed-loop transmission power control is updated in base transceiver stations. The uplink signal target SIR value is updated independently at base transceiver stations and not at the base station controller. At the base transceiver station, when a decoder detects a loss of synchronization of a user signal from a mobile station, a demodulator adds a step value ?SIR that has been set in advance to the uplink signal SIR value that has been reported from the base station controller to obtain an uplink signal target SIR provisional value. When this uplink signal target SIR provisional value is smaller than an uplink signal target SIR maximum value that has been set in advance, the uplink signal target SIR value is updated to the uplink signal target SIR provisional value.
    Type: Grant
    Filed: April 19, 2003
    Date of Patent: April 10, 2007
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Publication number: 20060019661
    Abstract: A propagation delay-propagation loss table is stored in advance in a radio base station, a first area and a second area being set in advance in the propagation delay-propagation loss table, the first area being predicted to contain the relation between the propagation delay and propagation loss when a mobile station is not within the service area of a repeater, while in the second area the effect of the control delay and power gain caused by the repeater upon this first area is taken into consideration. In the radio base station, it is then determined that a mobile station is within the service area of the radio base station when the relation between the propagation loss value that has been reported from the mobile station and the propagation delay that has been calculated is contained within the first area, and it is determined that the mobile station is within the service area of the repeater when the relation is contained within the second area.
    Type: Application
    Filed: June 21, 2005
    Publication date: January 26, 2006
    Inventor: Katsumi Tanoue
  • Publication number: 20050215255
    Abstract: Here is provided a mobile communication system which uses a plurality of channels for communication. The plurality of channels comprise a first channel on which a mobile terminal communicates simultaneously with both a first base station and a second base station in a handover state wherein the mobile terminal is in an overlapping area of a cell of the first base station and a cell of the second base station, and a second channel on which the mobile terminal communicates with one of the first and second base stations even in the handover state. The one of the first and second base stations comprises a handover state detector 22 for detecting information notified by a radio network controller regarding whether or not the mobile terminal is in the handover state, and also comprises a transmission power calculator 20 for calculating a value of downlink transmission power on the second channel on the basis of the information detected by the handover state detector 22.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 29, 2005
    Inventor: Katsumi Tanoue
  • Publication number: 20040203993
    Abstract: A CDMA mobile communication system is disclosed in which a reference value that is used in a closed-loop transmission power control is updated in base transceiver stations. The updating of an uplink signal target SIR value that serves as the reference in closed-loop transmission power control is performed independently at base transceiver stations and is not performed at the base station controller. At the base transceiver station, when a decoder detects a loss of synchronization of a user signal from a mobile station, a demodulator adds a step value ASIR that has been set in advance to the uplink signal target SIR value that has been reported from the base station controller to obtain an uplink signal target SIR provisional value, and when this uplink signal target SIR provisional value is smaller than an uplink signal target SIR maximum value that has been set in advance, the uplink signal target SIR value is updated to the uplink signal target SIR provisional value.
    Type: Application
    Filed: April 19, 2003
    Publication date: October 14, 2004
    Applicant: NEC Corporation
    Inventor: Katsumi Tanoue
  • Patent number: 6804215
    Abstract: In a CDMA receiver which receives, as a reception signal (33), a signal given by subjecting a data signal comprising predetermined pattern data (PS) to spread modulation by the use of a spread code, a correlation value calculating unit (701-703) produces correlation value data obtained by multiplying the reception signal by the spread code and the predetermined pattern data. A signal-to-interference ratio calculating portion (74) calculates a signal-to-interference ratio of the reception signal. A reception timing determining portion (76) determines a reception timing of the predetermined pattern data in response to the correlation value data and the signal-to-interference ratio.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: October 12, 2004
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Publication number: 20040185905
    Abstract: A controller in a wireless communication system for a mobile station simultaneously communicating with a plurality of base stations comprises a receiver receiving a plurality of signals, relating to a fist communication type, from a plurality of base stations, and receiving a signal, relating to a second communication type different from the first communication type, from a specific base station; and a transmitter, coupled to the receiver, transmitting a control signal generated on the basis of the signal relating to the second communication type received by the receiver from the specific base station, to the plurality of base stations and the specific base station.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 23, 2004
    Applicant: NEC CORPORATION
    Inventor: Katsumi Tanoue
  • Publication number: 20030002462
    Abstract: Disclosed is a CDMA system and a method of detecting a faulty mobile device in which interference with communication of other mobile devices can be decreased by detecting the existence of a mobile device with a faulty receiver system through monitoring the transmission power of the outgoing signal transmitted from a base station to the mobile device and preventing unnecessary increase in the outgoing transmission power due to an increase request of the outgoing transmission power from the faulty mobile device. The base station reports to a base station controller the transmission power of the outgoing signal transmitted to the mobile device. The base station controller judges the mobile device as faulty when the transmission power of the outgoing signal exceeds the predetermined threshold value for a predetermined period of time, and registers the faulty mobile device to the mobile device managing database.
    Type: Application
    Filed: June 25, 2002
    Publication date: January 2, 2003
    Applicant: NEC CORPORATION
    Inventor: Katsumi Tanoue
  • Patent number: 6148281
    Abstract: A receiving device comprises a demodulating section for demodulating transmission signal into a demodulated signal having a digital speech signal and a error detecting code. The demodulating section divides the digital speech signal into first through N-th subframe speech signals and detects a received field intensities of the first through the N-th subframe speech signals to produce first through N-th field detection signals representative of the received field intensities of the first through the N-th subframe speech signals, respectively, where N represents a positive integer which is greater than one.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: November 14, 2000
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Patent number: 6041238
    Abstract: A communication channel is dynamically assigned to a mobile station in autonomous decentralized channel assignment in TDMA/TDD communications system. An interference detection criterion is determined depending on a signal strength of a call request signal. It is determined whether interference occurs in a transmitting time slot relative to the interference detection criterion in a selected channel, and further determined whether interference occurs in a receiving time slot relative to a predetermined interference detection criterion in the selected channel. When it is determined that no interference occurs in the selected transmitting and receiving time slots, the selected channel is assigned to the mobile station.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: March 21, 2000
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Patent number: 5844898
    Abstract: A handover method for a mobile radio communications system, which reduces the disconnection time when the radio channel is switched from one radio base station to another radio base station. When the electric field received from a first radio base station weakens beyond a preset level during communication, the mobile station receives TDMA frames intermittently from other radio base stations without disconnecting communication with the first radio base station, and selects a second radio base station based on the strength of the received electric fields. In a similar manner, the mobile station then intermittently prepares for connection with the second radio base station while continuing the communication with the first radio base station.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: December 1, 1998
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue
  • Patent number: 5608765
    Abstract: A radio frame synchronization system performs synchronization control of radio frames to be transmitted from a plurality of radio base stations respectively connected to wire lines to a mobile station. Each of the radio base stations includes a receiver, a sync signal detecting section, and a phase correcting section. The receiver receives a time-division radio signal to be transmitted from a distant radio base station in operation to the mobile station when a home radio base station is activated. The sync signal detecting section detects a sync signal from a reception output from the receiver. The phase correcting section generates a radio frame reference signal, indicating a timing at which a radio frame is transmitted to the mobile station, on the basis of a phase difference between the radio frame synchronization reference signal supplied from the wire line and the sync signal from the sync signal detecting section.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: March 4, 1997
    Assignee: NEC Corporation
    Inventor: Katsumi Tanoue