Patents by Inventor Kanada Nakayasu

Kanada Nakayasu 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: 20190075499
    Abstract: To enable avoidance of termination of wireless connection between a base station and a terminal apparatus. A first base station (a base station 100A) comprises: an acquisition unit 141 configured to acquire mobility information on a terminal apparatus 200, the mobility information corresponding to information related to a beam formed for wireless communication with the terminal apparatus 200; and a control unit 143 configured to control processing related to handover for the terminal apparatus 200, based on the mobility information on the terminal apparatus 200.
    Type: Application
    Filed: August 6, 2018
    Publication date: March 7, 2019
    Applicant: NEC CORPORATION
    Inventors: Kohei IZUI, Kanada NAKAYASU
  • Patent number: 10212701
    Abstract: The first base station (2) includes a first call processing unit (22) and a communication path establishment unit (24). The communication path establishment unit (24) performs processing for establishing a wireless link with the second base station (4). The first call processing unit (22) performs call processing for setting the wireless communication path to the second base station (4) via the communication path establishment unit (24). The second base station (4) includes a second call processing unit (42) and a transfer unit (46). The second call processing unit (42) performs call processing for setting the wireless communication path to the first base station (2). When the transfer unit (46) receives a signal for the call processing from the first base station (2), the transfer unit (46) transfers this signal to the second call processing unit (42).
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 19, 2019
    Assignee: NEC CORPORATION
    Inventor: Kanada Nakayasu
  • Publication number: 20160057787
    Abstract: The first base station (2) includes a first call processing unit (22) and a communication path establishment unit (24). The communication path establishment unit (24) performs processing for establishing a wireless link with the second base station (4). The first call processing unit (22) performs call processing for setting the wireless communication path to the second base station (4) via the communication path establishment unit (24). The second base station (4) includes a second call processing unit (42) and a transfer unit (46). The second call processing unit (42) performs call processing for setting the wireless communication path to the first base station (2). When the transfer unit (46) receives a signal for the call processing from the first base station (2), the transfer unit (46) transfers this signal to the second call processing unit (42).
    Type: Application
    Filed: February 26, 2014
    Publication date: February 25, 2016
    Inventor: Kanada NAKAYASU
  • Patent number: 8862149
    Abstract: A radio communication system according to the present invention includes a radio base station device and a parameter determination device. The radio base station device includes: an antenna device which performs radio communication with a mobile station device; a positional information acquisition unit which acquires positional information representing a position of the antenna device; and a control unit which notifies the parameter determination device of the positional information acquired by the positional information acquisition unit, and controls the antenna device according to a parameter transmitted from the parameter determination device.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: October 14, 2014
    Assignee: Nec Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 8139513
    Abstract: A wireless base station apparatus according to the present invention has a plurality of wireless resources allocated in correspondence with communication processings on real-time data, non-real-time data and shared data, and a control section. The control section stores a table for recording states of use of the wireless resources, and upon receiving a signal for requesting setting some of the wireless resources for new real-time data, and if no released resource is found by referring to the table, allocates part of wireless resources for communication processing on the shared data to wireless resources for communication processing on the new real-time data, and upon receiving a signal for requesting setting some of the wireless resources for new shared data, and if no released resource is found by referring to the table, allocates part of wireless resources for communication processing on the non-real-time data to wireless resources for communication processing on the new shared data.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: March 20, 2012
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20120064918
    Abstract: A radio communication system according to the present invention includes a radio base station device and a parameter determination device. The radio base station device includes: an antenna device which performs radio communication with a mobile station device; a positional information acquisition unit which acquires positional information representing a position of the antenna device; and a control unit which notifies the parameter determination device of the positional information acquired by the positional information acquisition unit, and controls the antenna device according to a parameter transmitted from the parameter determination device.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 15, 2012
    Inventor: Kanada Nakayasu
  • Publication number: 20080186942
    Abstract: A wireless base station apparatus according to the present invention has a plurality of wireless resources allocated in correspondence with communication processings on real-time data, non-real-time data and shared data, and a control section. The control section stores a table for recording states of use of the wireless resources, and upon receiving a signal for requesting setting some of the wireless resources for new real-time data, and if no released resource is found by referring to the table, allocates part of wireless resources for communication processing on the shared data to wireless resources for communication processing on the new real-time data, and upon receiving a signal for requesting setting some of the wireless resources for new shared data, and if no released resource is found by referring to the table, allocates part of wireless resources for communication processing on the non-real-time data to wireless resources for communication processing on the new shared data.
    Type: Application
    Filed: January 9, 2008
    Publication date: August 7, 2008
    Inventor: KANADA NAKAYASU
  • Patent number: 7392063
    Abstract: A control method for a mobile communication system. The method includes receiving data destined for a mobile terminal from a host apparatus; storing the data in a buffer; keeping the stored data destined for the mobile terminal available even when the mobile terminal changes a cell association; retrieving the data from the buffer; and transmitting the data to the mobile terminal via wireless signals.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: June 24, 2008
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 7379755
    Abstract: The present invention provides a mobile communication system that can efficiently control the conflicting abilities of making the high quality communication and keeping the number of accommodating the mobile terminals. A radio quality measuring part of a mobile terminal requests a radio base station to increase or decrease the transmitting power to attain a needed receiving quality. A radio quality control part controls the receiving quality so that the bearer quality may attain the required quality on the basis of the bearer quality measured by a bearer quality control part. The radio base station always monitors the quality for a radio section. When this radio quality exceeds a threshold specified by a radio base station controller, the radio base station reports to the radio base station controller the worsening or improvement of the radio quality via a radio base station protocol terminator with a radio quality report.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 27, 2008
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 7301916
    Abstract: A network access control is performed by using a status management table having a maximum permissible number of entries, which is determined depending on a time-out period predetermined by user terminals and a hardware-setting time required for setting communication resource. When receiving an access start request received from a user terminal, it is determined whether the hardware setting corresponding to the access start request is estimated to be completed within the time-out period. If it is estimated to be completed, the received access start request is registered into the status management table to issue a hardware setting command. If it is estimated not to be completed, an access rejection message is sent back to the user terminal.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 27, 2007
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20070253372
    Abstract: Information on each wireless environment of an adjacent cell is exchanged between adjacent wireless base station in a mobile communication system, where the system enables a plurality of wireless base stations to communicate with each other by using a link between the base stations. Then, the latest information of the information on the wireless environments is stored in a memory at each wireless base station. Each wireless base station performs handover control, transmission power control, traffic control by referencing the memory storage information. That enables usage efficiency of wireless resources to be improved and a communication quality at end users to be improved as a whole of the system.
    Type: Application
    Filed: April 25, 2007
    Publication date: November 1, 2007
    Applicant: NEC CORPORATION
    Inventor: Kanada Nakayasu
  • Publication number: 20060126507
    Abstract: A wireless base station device, connected to a higher-level station device via a wired line, comprises baseband processors 11, one for each virtual link 21 to which user data flows belong. In the baseband processor 11, a congestion monitor 51 monitors the reception bandwidth usage rate of a virtual link allocated to each cell for detecting congestion and, upon detecting congestion, sends a notification to a flow controller 57. A user traffic distributor 52 distributes a received user traffic into the traffic flow of each user and, at the same time, extracts, for each user data flow, the buffer holding amount in the higher-level station device where user data flows are multiplexed and sends a notification to the flow controller 57.
    Type: Application
    Filed: December 15, 2005
    Publication date: June 15, 2006
    Applicant: NEC Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 7061889
    Abstract: A system for monitoring a CDMA-type mobile terminal device, includes (a) a CDMA base station system, (b) a CDMA core network connected to the CDMA base station system through wires, (c) a server which monitors the CDMA base station system connected to the CDMA core network through wires, (d) a monitoring device connected to the server through wires, the monitoring device monitoring and controlling the CDMA base station system through both the server and the CDMA core network, and (e) a CDMA-type mobile terminal device connected to the CDMA base station system through radio signals.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: June 13, 2006
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20050221832
    Abstract: A control method for a mobile communication system. The method includes receiving data destined for a mobile terminal from a host apparatus; storing the data in a buffer; keeping the stored data destined for the mobile terminal available even when the mobile terminal changes a cell association; retrieving the data from the buffer; and transmitting the data to the mobile terminal via wireless signals.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 6, 2005
    Inventor: Kanada Nakayasu
  • Publication number: 20040166899
    Abstract: The present invention provides a mobile communication system that can efficiently control the conflicting abilities of making the high quality communication and keeping the number of accommodating the mobile terminals.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Applicant: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20030214931
    Abstract: A network access control is performed by using a status management table having a maximum permissible number of entries, which is determined depending on a time-out period predetermined by user terminals and a hardware-setting time required for setting communication resource. When receiving an access start request received from a user terminal, it is determined whether the hardware setting corresponding to the access start request is estimated to be completed within the time-out period. If it is estimated to be completed, the received access start request is registered into the status management table to issue a hardware setting command. If it is estimated not to be completed, an access rejection message is sent back to the user terminal.
    Type: Application
    Filed: May 19, 2003
    Publication date: November 20, 2003
    Applicant: NEC Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 6515979
    Abstract: A baseband signal processor is used in a base station of a CDMA communication system. The baseband signal processor comprised a plurality of processing panels which abstract specific data sequences from an input signal to produce abstracted data sequences. A RAKE section is connected to the processing panels which synthesize the abstracted data sequences to produce the synthesized data sequence. A controller is related to the processing panels and connected to the RAKE section to select at least one of the processing panels in response to a first transmission rate. Selected processing panels selected by the controller abstract the first derivative data sequences from the input signal as the specific data sequences and to produce first abstracted data sequences as the abstracted data sequences. The RAKE section synthesizes the first abstracted data sequences under the control of the controller.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: February 4, 2003
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20030016642
    Abstract: A CDMA wireless system which exchanges a signal between a plurality of mobile stations and a wireless base station by a CDMA (Code Division Multiple Access) method includes first and second hierarchical cells, and a base station control device. The first and second hierarchical cells constitute hierarchical cover areas of the wireless base station and are different in only transmission/reception frequency. The base station control device preferentially hands over a mobile station having a low spread rate among the mobile stations to either one of the first and second hierarchical cells. An interference wave suppressing method in this system is also disclosed.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 23, 2003
    Applicant: NEC Corporation
    Inventor: Kanada Nakayasu
  • Patent number: 6337979
    Abstract: A PDC communication controlling apparatus includes an audio processing section for converting a digital audio signal which has been encoded at a transmission rate of a personal digital cellular (PDC) into a digital audio signal at a transmission rate of a digital exchange network, a small radio base station controlling section accommodating a plurality of small radio base stations which are connected to PDC portable terminal units through radio circuits and which have different radio cover areas, the small radio base station controlling section managing the radio cover areas of the PDC portable terminal units, controlling calls, and controlling and managing the radio circuits, a network-side adaptor used in non-audio communications with the PDC portable terminal units, a PDC/network interface section connected to a private branch exchange through a plurality of communication paths, a time division switch for connecting the PDC/network interface, the audio processing section, the radio base station controlling
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: January 8, 2002
    Assignee: NEC Corporation
    Inventor: Kanada Nakayasu
  • Publication number: 20010048666
    Abstract: A system for monitoring a CDMA-type mobile terminal device, includes (a) a CDMA base station system, (b) a CDMA core network connected to the CDMA base station system through wires, (c) a server which monitors the CDMA base station system connected to the CDMA core network through wires, (d) a monitoring device connected to the server through wires, the monitoring device monitoring and controlling the CDMA base station system through both the server and the CDMA core network, and (e) a CDMA-type mobile terminal device connected to the CDMA base station system through radio signals.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 6, 2001
    Applicant: NEC CORPORATION
    Inventor: Kanada Nakayasu