Patents by Inventor Yasuhiro Kawabe

Yasuhiro Kawabe 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: 20180167999
    Abstract: A base station includes a transceiver and a processor. The processor is configured to: in response to receiving a connection request from user equipment, causes a transceiver to transmit a message to a first management apparatus; and in response to receiving a reroute message to indicate a reroute from a first management apparatus to a second management apparatus, causes the transceiver to transmit Non Access Stratum (NAS) information in the reroute message to the second management apparatus. The message includes an identifier of the user equipment assigned by the base station. The base station is configured to perform a connection operation on the user equipment. The identifier of the user equipment assigned by the base station is configured in the reroute message without provision of an identifier of the user equipment assigned by the first management apparatus.
    Type: Application
    Filed: February 7, 2018
    Publication date: June 14, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Yasuhiro Kawabe, Masaaki Ohtake
  • Publication number: 20160270084
    Abstract: Object is to perform appropriate communication control even if a size of “UE-EUTRA-Capability” is increased. A mobile communication method according to the present invention includes a mobile station (UE) notifying a radio base station (eNB) of “UE-EUTRA-Capability”, the radio base station (eNB) deleting, when a size of the “UE-EUTRA-Capability” exceeds a size that can be stored in the radio base station (eNB) or a mobility management node (MME), a predetermined capability from the “UE-EUTRA-Capability”, and the radio base station (eNB) notifying the mobility management node (MME) of a capability deleted from the “UE-EUTRA-Capability” or a remaining capability that is not deleted from the “UE-EUTRA-Capability”.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 15, 2016
    Applicant: NTT DOCOMO, INC.
    Inventors: Yusuke Sasaki, Kenji Fukazawa, Yasuhiro Kawabe, Hideyuki Matsutani, Yuichiro Nakamura, Wuri Andarmawanti Hapsari
  • Patent number: 9144021
    Abstract: A controller in a mobile communication system includes a management unit (151) configured to manage a resource usage condition in the mobile communication system and a determination unit (152) configured to determine to which an idle state or a power saving state different from the idle state a user equipment (10) is to transition after completion of communication of a data signal depending on the resource usage condition, and the state determined by the determination unit (152) is indicated to the user equipment (10).
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: September 22, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Yuichiro Nakamura, Hideyuki Matsutani
  • Patent number: 9100905
    Abstract: In a mobile communication method according to the present invention, in a communication start procedure of a mobile station camps on a femtocell, acquiring, by an exchange 20, a frequency of the femtocell and a femtocell ID for uniquely identifying the femtocell which are held in a controller 10, storing, by the exchange 20 and a home location register 30, the acquired frequency of the femtocell and the acquired femtocell ID in association with subscriber information of the mobile station UE, performing, by the exchange 20 and the home location register 30, location registration to register the mobile station UE for a location registration area to which the femtocell geographically overlaid with the macrocell belongs, in response to the received location registration request signal, in a release procedure of the radio connection after completion of the location registration, notifying, by the controller 10, the mobile station UE of the notified frequency of the femtocell notified by the exchange 20.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: August 4, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Yasuhiro Kawabe, Masafumi Masuda
  • Patent number: 9094815
    Abstract: A base station in a mobile communication system transmits and receives wireless signals with a user apparatus in a cell; in the case where the base station is connected to a communication network through a router, obtains an address of the router; periodically receives time information from a time information server through the communication network; stores in a memory unit the router's address and a current time indicated by the time information; and (1) in the case where a current-time-storing-is-stopped period is equal to or greater than a threshold value, or (2) in the case where the current-time-storing-is-stopped period is less than the threshold value and is equal to or greater than another threshold value, and an address just received from the router is different from the address stored in the memory unit, transmits a control signal for stopping the transmission of the wireless signal.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: July 28, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Hiroyuki Hosono, Takefumi Yamada, Hidehiko Oyane, Tsutomu Sugaya, Yasuhiro Kawabe, Masayuki Matsubara
  • Patent number: 9071941
    Abstract: A mobile communication system 100 includes a specific cell configured to allow a specific user to be provided with a service and to allow a non-specific user other than the specific user to be provided with a limited service. The mobile communication system 100 includes a management unit 23 configured to manage a presence state of the non-specific user in the specific cell in addition to a presence state of the specific user in the specific cell.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: June 30, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Hideyuki Matsutani, Yuichiro Nakamura
  • Patent number: 8953558
    Abstract: The first communication system is configured to determine whether or not to provide information that instructs the UE 10 to connect to the second communication system, based on a subscriber identifier allocated to the UE 10. The subscriber identifier is configured to identify whether or not the UE 10 is allowed to utilize the second communication system.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 10, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Yuichiro Nakamura, Yasuhiro Kawabe, Hideyuki Matsutani
  • Publication number: 20150017970
    Abstract: A radio base station apparatus includes a count retrieval unit configured to retrieve a call origination/reception count and a handover count within a predetermined time interval, an idle transition timer value controller configured to adjust an idle transition timer value representing a time period from completion of communication with a mobile station until the mobile station is caused to transition to an idle mode based on the retrieved call origination/termination count and the retrieved handover count, and an idle transition controller configured to cause the mobile station to transition to the idle mode based on the adjusted idle transition timer value.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 15, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Takahiro Takiguchi, Kohei Kiyoshima, Masafumi Masuda, Yasuhiro Kawabe, Seigo Harano
  • Patent number: 8885566
    Abstract: A controller in a mobile communication system includes a management unit (151) configured to manage a resource usage condition in the mobile communication system and a determination unit (152) configured to determine a timer value for determining a frequency of transmitting a state transition request signal for causing a user equipment to transition to a power saving state after completion of communication of a data signal depending on the resource usage condition, and the timer value determined by the determination unit (152) is broadcast to the user equipment.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: November 11, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Hideyuki Matsutani, Yuichiro Nakamura
  • Patent number: 8824399
    Abstract: A mobile communication method according to the present invention includes the steps of: after a mobile station UE having RRC connection with the radio network controller RNC gets out of the coverage of the mobile communication system of WCDMA scheme, performing location registration to the mobile communication system of LTE scheme, issuing a notification to the radio network controller RNC by the exchange apparatus SGSN upon reception of predetermined signal, the notification implying that the mobile station UE performs the location registration to the mobile communication system of LTE scheme; and the radio network controller RNC releasing the resources for RRC connection without transmitting a signal to release the resources to the mobile station UE in response to the notification from the exchange apparatus SGSN.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: September 2, 2014
    Assignee: NTT Docomo, Inc.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Yuichiro Nakamura, Hideyuki Matsutani
  • Patent number: 8817654
    Abstract: A radio controller 03 of the present invention includes a threshold value holding unit 11 configured to associate a traffic channel configuration with at least one threshold value and hold these associated traffic channel configuration and threshold value, a threshold value extraction unit 13 configured to extract at least one threshold value associated with a traffic channel configuration of a mobile station and a threshold value determination unit 14 configured to determine whether or not to change the traffic channel configuration of the mobile station by comparing the extracted threshold value with a communication state at a predetermined timing.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: August 26, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yuichiro Nakamura, Yasuhiro Kawabe, Masafumi Masuda
  • Patent number: 8750881
    Abstract: A mobile communication method comprises a step of setting a restriction type by the femtocell radio base station #A in response to input of predetermined information to the femtocell radio base station #A, the restriction type indicating restricted processes to be applied to a mobile station UE belonging to the CSG #1 in the femtocell #1; a step B of notifying a mobile station UE in the femtocell #1 of the set restriction type by the femtocell radio base station #1; and a step of detecting processes restricted in the femtocell #1 on the basis of the notified restriction type, in a case where the mobile station UE belongs to the CSG #1.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: June 10, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe
  • Publication number: 20140148121
    Abstract: A base station in a mobile communication system transmits and receives wireless signals with a user apparatus in a cell; in the case where the base station is connected to a communication network through a router, obtains an address of the router; periodically receives time information from a time information server through the communication network; stores in a memory unit the router's address and a current time indicated by the time information; and (1) in the case where a current-time-storing-is-stopped period is equal to or greater than a threshold value, or (2) in the case where the current-time-storing-is-stopped period is less than the threshold value and is equal to or greater than another threshold value, and an address just received from the router is different from the address stored in the memory unit, transmits a control signal for stopping the transmission of the wireless signal.
    Type: Application
    Filed: May 30, 2012
    Publication date: May 29, 2014
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroyuki Hosono, Takefumi Yamada, Hidehiko Oyane, Tsutomu Sugaya, Yasuhiro Kawabe, Masayuki Matsubara
  • Patent number: 8614957
    Abstract: When receiving an extension connection request from a first mobile terminal, a first route selection device selects a first extension connection route from among a plurality of extension connection routes and transmits the type of the first extension connection route and calling-side address information used on the first extension connection route to a second route selection device. The second route selection device selects a second extension connection route from among the plurality of extension connection routes and transmits the type of the second extension connection route and called-side address information used on the second extension connection route to the first route selection device. If the second extension connection route coincides with the first extension connection route, an extension connection is established between the first mobile terminal and the second mobile terminal via the first extension connection route.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: December 24, 2013
    Assignees: Fujitsu Limited, NTT DoCoMo, Inc.
    Inventors: Reiko Hattori, Takeshi Kunugi, Tadashi Yamada, Takeshi Masubuchi, Kenichiro Aoyagi, Yasuhiro Kawabe
  • Patent number: 8520649
    Abstract: A mobile communication method includes: a step which establishes a second radio access link between a mobile station and a radio communication data combining device for “an area limit service” via a radio base station for “a public area service” when a first radio access link is established between the mobile station and the radio communication data combining device for “the area limit service” via the radio base station for “the area limit service”; and a step in which the radio communication data combining device for “the area limit service” combines the data for “the area limit service” transferred from the radio base station for “the area limit service” and the data for “the area limit service” transferred from the radio base station for “the public area service.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: August 27, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kenichiro Aoyagi, Masafumi Masuda, Yasuhiro Kawabe, Takaaki Sato
  • Patent number: 8509784
    Abstract: A mobile communication method according to the present invention includes a step A of causing a mobile station in a standby mode in a first cell to transmit a communication start request signal, a step B of judging whether or not to measure communication quality of a second cell on the basis of judgment as to whether or not the particular service is provided in each of the cells and judgment as to whether or not communication quality of the second cell is included in the communication start request signal, the second cell overlaid by the first cell in a different frequency band and a step C of starting communication of the mobile station in either one of the first cell and the second cell on the basis of the measured communication quality of the second cell.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: August 13, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Yasuhiro Kawabe, Takaaki Sato, Ryoji Yamamoto, Katsuhiko Yamagata
  • Publication number: 20130051227
    Abstract: A controller in a mobile communication system includes a management unit (151) configured to manage a resource usage condition in the mobile communication system and a determination unit (152) configured to determine to which an idle state or a power saving state different from the idle state a user equipment (10) is to transition after completion of communication of a data signal depending on the resource usage condition, and the state determined by the determination unit (152) is indicated to the user equipment (10).
    Type: Application
    Filed: April 12, 2011
    Publication date: February 28, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Yuichiro Nakamura, Hideyuki Matsutani
  • Publication number: 20130028084
    Abstract: A controller in a mobile communication system includes a management unit (151) configured to manage a resource usage condition in the mobile communication system and a determination unit (152) configured to determine a timer value for determining a frequency of transmitting a state transition request signal for causing a user equipment to transition to a power saving state after completion of communication of a data signal depending on the resource usage condition, and the timer value determined by the determination unit (152) is broadcast to the user equipment.
    Type: Application
    Filed: April 12, 2011
    Publication date: January 31, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Hideyuki Matsutani, Yuichiro Nakamura
  • Patent number: 8355723
    Abstract: A mobile communication method according to the present invention includes step of causing a mobile station 300 standing by in a cell under a control of a radio base station 202 to send identification information of the mobile station and special identification information; step of, upon receipt of the special identification information, determining whether or not the mobile station 300 has access permission to a radio base station 200 based on the received identification information of the mobile station 300 and identification information of a second radio base station; and step of, when it is determined that the mobile station 300 has access authorization to the radio base station 200, instructing the mobile station 300 to change a radio communication parameter used by the mobile station 300.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: January 15, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Hiroyuki Hosono, Akira Ishii, Masafumi Masuda, Kenichiro Aoyagi, Yasuhiro Kawabe
  • Publication number: 20120322409
    Abstract: A mobile communication system 100 includes a specific cell configured to allow a specific user to be provided with a service and to allow a non-specific user other than the specific user to be provided with a limited service. The mobile communication system 100 includes a management unit 23 configured to manage a presence state of the non-specific user in the specific cell in addition to a presence state of the specific user in the specific cell.
    Type: Application
    Filed: December 21, 2010
    Publication date: December 20, 2012
    Applicant: NTT DOCOMO,. INC
    Inventors: Kenichiro Aoyagi, Yasuhiro Kawabe, Hideyuki Matsutani, Yuichiro Nakamura