Patents by Inventor Takashi Koshimizu

Takashi Koshimizu 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: 20190239271
    Abstract: According to one embodiment, a method for establishing a communication is described comprising performing, over a first mobile radio communication network, a call control protocol message exchange indicating that a communication session establishment between a first communication device and a second communication device is intended; initiating a fallback by the first communication device from the first mobile radio communication network to a second mobile radio communication network, in reaction to a specific call control message of the call control protocol message exchange; performing the fallback and establishing the communication session between the first communication device and the second communication device via the second mobile radio communication network.
    Type: Application
    Filed: September 13, 2017
    Publication date: August 1, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Riccardo GUERZONI, Jari ALI, Takashi KOSHIMIZU, Irfan ALI
  • Patent number: 10312144
    Abstract: A wafer processing method for divides a wafer into individual device chips along a plurality of division lines. The method includes forming a dividing groove along each division line formed on the front side of the wafer, the dividing groove having a depth corresponding to the finished thickness of each device chip, thinning the wafer to expose the dividing groove to the back side of the wafer, thereby dividing the wafer into the individual device chips, applying a liquid resin for die bonding to the back side of the wafer and next solidifying the liquid resin applied to the back side of the wafer, thereby forming a die bonding resin film having a predetermined thickness on the back side of each device chip, and isolating each device chip from the wafer.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: June 4, 2019
    Assignee: Disco Corporation
    Inventors: Hideki Koshimizu, Yurika Araya, Tetsukazu Sugiya, Takashi Haimoto
  • Publication number: 20190166633
    Abstract: A radio communication system includes user equipment; a call control device; a subscriber management device; and a connection device that connects an application server, wherein the subscriber management device includes a subscriber information storage unit that stores subscriber information that associates a first identifier for identifying the user equipment in the radio communication system with a second identifier for identifying the user equipment in the application server, wherein the call control device includes a first context storage unit and a first communication processing unit that transmits the first identifier, the second identifier, and a call control device identifier to the connection device, and wherein the connection device includes a second context storage unit and a second communication processing unit that reports, to the application server, that the second identifier is activated.
    Type: Application
    Filed: May 10, 2017
    Publication date: May 30, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Syed Husain, Malla Reddy Sama
  • Publication number: 20190150226
    Abstract: An MS 300 controls a mobility level (IMM) of user device in an idle mode depending on a movement; state of the user device. The ME 300 includes a movement state acquisition section 320 that acquires the movement state of the user device, a mobility level selector 330 chat selects a mobility level out of the multiple mobility levels based on the movement state of the user device acquired by the movement state acquisition section 320, and a mobility level notification section 340 that notifies the user device of the mobility level selected by the mobility level selector 330.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 16, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Irfan Ali, Syed Husain
  • Publication number: 20190141599
    Abstract: Provided are an anchor point control device and an anchor point control method that make it possible to select a more suitable anchor point when dynamically changing an anchor point (route switching point). An ME (300) acquires user information indicating at least either an attribute or a state of UE (100), and selects an anchor point out of an anchor point AL and an anchor point AC based on the acquired user information. In addition, the ME (300) notifies the UE 100 of the selected anchor point.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 9, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Irfan Ali, Syed Husain
  • Patent number: 10231106
    Abstract: In a communication system 10, an IN-CSE 200 maps and retains a public IP address acquired from an MTC-UE 100 and an UE-ID, and receives an incoming message addressed to the MTC-UE 100 from an AS 40A. The IN-CSE 200, upon receiving the incoming message, sets the public IP address mapped with the retained UE-ID in a destination address, and delivers to a GGSN/PGW 310 an IP packet containing the corresponding UE-ID. The GGSN/PGW 310 identifies a private IP address assigned to the MTC-UE 100, based on the UE-ID included in the IP packet received from the IN-CSE 200.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 12, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Itsuma Tanaka, Irfan Ali
  • Publication number: 20190039343
    Abstract: A servo press machine includes an eccentric shaft, a connecting rod, a slide, an eccentric shaft-side sliding surface, a connecting rod-side sliding surface, an oil supply port, and a supply mechanism. The oil supply port opens on the eccentric shaft-side sliding surface or the connecting rod-side sliding surface, and supplies a lubricant between the eccentric shaft-side sliding surface and the connecting rod-side sliding surface. The supply mechanism supplies the lubricant to the oil supply port. The eccentric shaft-side sliding surface is formed on the eccentric shaft that is rotationally driven by a servomotor. The oil supply port is formed on the connecting rod-side sliding surface of the connecting rod that moves upward and downward due to the rotational driving of the eccentric shaft.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 7, 2019
    Inventor: Takashi KOSHIMIZU
  • Patent number: 10033652
    Abstract: When congestion is detected in an S-GW, communications are allowed to continue as many as possible. A mobile communication method according to the present invention includes: notifying, by the S-GW, a PDF in a PCRF of detection of congestion when the congest is detected; acquiring, by the PDF in the PCRF, charging system information regarding UEs using an S1 bearer and an S5 bearer set in the S-GW from an HSS; acquiring, by the PDF in the PCRF, communication service class information in a flow unit in the S1 bearer and the S5 bearer from the P-GW according to the notification; and performing, by the PDF in the PCRF, bandwidth adjustment on specific flows of the S1 bearer and the S5 bearer based on the charging system information and the communication service class information in the flow unit.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: July 24, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Tomoki Shibahara, Ryohei Ohgushi, Takashi Morita, Shin-ichi Isobe
  • Publication number: 20180206107
    Abstract: Provided is a radio communication system, a radio base station, a mobility management entity, a user device, and a communication control method in which an idle user device can be quickly and reliably returned to a connected state in a configuration in which a huge number of user devices (UE) are connected to a radio network such as in CIoT. The communication control method includes forwarding, when UE has transitioned from a connected state to an idle state, in which eNB forwards to MME AS Context that is a context of an access layer between the UE and the eNB; transmitting in which the MME transmits the AS Context to the eNB in response to an acquisition request of the AS Context from the eNB; and causing the eNB to return the UE to the connected state by using the AS Context transmitted from the MME.
    Type: Application
    Filed: July 12, 2016
    Publication date: July 19, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Irfan Ali, Syed Husain
  • Patent number: 10003965
    Abstract: An eUICC 100 embedded in an UE 200 authenticates an AUTN transmitted from an HSS 300, and calculates a transfer key TK by using a secret key K. The eUICC 100 acquires a transfer Token by decoding an enc Token by using the transfer key TK, and acquires a new Customer ID by decoding an enc New ID by using the transfer key TK. The eUICC 100 transmits a user auth resp in response to a User auth+transfer Setup Req including the AUTN, the enc Token, and the enc New ID to the HSS 300. The eUICC 100 generates a shared-Secret Key shared between the eUICC 100 and an HSS 400 by using the transfer Token, and executes an attach procedure for the HSS 400 by using the generated shared-Secret Key and the new Customer ID.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 19, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Hiroshi Aono, Alf Zugenmaier
  • Publication number: 20180139744
    Abstract: A user device with a radio resource control unit configured to perform a process in a control plane according to radio resource control and a mobility management unit configured to perform mobility management of the user device and enable a process in a user plane is provided.
    Type: Application
    Filed: January 16, 2018
    Publication date: May 17, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Irfan Ali
  • Publication number: 20180048983
    Abstract: In a gateway device that is provided between a radio base station and a terminal device of a mobile communication network, the gateway device includes a storage control unit that temporarily stores data sequentially received from the terminal device in a data storage unit, and then transmits the data stored in the data storage unit to an external device connected to the mobile communication network; and a determination unit that determines a real time property of a service in the external device, and selects a method of setting a bearer to the radio base station based on the real time property.
    Type: Application
    Filed: March 30, 2016
    Publication date: February 15, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Gerald Kunzmann, Srisakul Thakolsri
  • Patent number: 9860832
    Abstract: An M2M platform apparatus 100 includes: data repositories 230, 240 configured to store data transmitted from M2M devices 20A, 20B; a data format processing unit 210 configured to determine in which format to store the data into the data repositories; a data analysis proposal unit 220 configured to analyze the stored data and, based on the data, propose the content of a service to be executed; a service execution-start unit 360 configured to request control on the M2M devices or communication equipment based on the content of the service proposed; and a rule-policy management unit 320 configured to cause the data to be stored into the data repositories based on a rule or a policy for the handling of the data to be stored into the data repositories.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: January 2, 2018
    Assignee: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Keisuke Sasada
  • Publication number: 20170332322
    Abstract: A gateway apparatus provided between a radio base station in a mobile communication network and a terminal apparatus, including: notification means configured to notify a proxy apparatus, connected to the mobile communication network as an external apparatus, of information indicating that the gateway apparatus is activated; and storing control means configured to temporarily store data sequentially received from the terminal apparatus in data storage means, and after that, to transmit the data stored in the data storage means to the proxy apparatus.
    Type: Application
    Filed: March 30, 2016
    Publication date: November 16, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Gerald Kunzmann, Srisakul Thakolsri
  • Patent number: 9681281
    Abstract: A UE (20A) includes an application control information holding unit (23) configured to hold application control information at least including identification information of an application (21) to be restricted or permitted to perform communications among the multiple applications (21); a restriction instruction reception unit (24) configured to receive, via a radio base station, a communication restriction instruction to control communications of the application (21) to be restricted or permitted to perform communications among the multiple applications (21); and a restriction instruction notification unit (25) configured to notify an upper layer, which is configured to implement communications with the application (21), of reception of the communication restriction instruction based on the communication restriction instruction received by the restriction instruction reception unit (24).
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: June 13, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Itsuma Tanaka, Shin-ichi Isobe, Takashi Koshimizu
  • Patent number: 9572073
    Abstract: In a mobile communication system capable of switching between a first communication state and a second communication state, in a case of a first communication state, a VoIP media signal is exchanged between a mobile station UE #1 and a mobile station UE #2 via an LTE radio access system and a node S-GW, a VoIP control signal is exchanged via the LTE radio access system, the node S-GW, and IMS, and in a case of a second communication state, a circuit-switched signal is exchanged between the mobile station UE #1 and an enhanced MSC/MGW via a 2G/3G radio access system, the VoIP media signal is exchanged between the enhanced MSC/MGW and the mobile station UE #2 via the node S-GW, and the VoIP control signal is exchanged between the enhanced MSC/MGW and the mobile station UE #2 via the node S-GW and the IMS.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: February 14, 2017
    Assignee: NEC Corporation
    Inventors: Katsutoshi Nishida, Takashi Koshimizu, Toshiyuki Tamura
  • Publication number: 20170026774
    Abstract: In a communication system 10, an IN-CSE 200 maps and retains a public IP address acquired from an MTC-UE 100 and an UE-ID, and receives an incoming message addressed to the MTC-UE 100 from an AS 40A. The IN-CSE 200, upon receiving the incoming message, sets the public IP address mapped with the retained UE-ID in a destination address, and delivers to a GGSN/PGW 310 an IP packet containing the corresponding UE-ID. The GGSN/PGW 310 identifies a private IP address assigned to the MTC-UE 100, based on the UE-ID included in the IP packet received from the IN-CSE 200.
    Type: Application
    Filed: November 14, 2014
    Publication date: January 26, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Itsuma Tanaka, Irfan Ali
  • Publication number: 20170019749
    Abstract: A service control system that is connected to a communication network to which a user apparatus for executing machine-to-machine communication is connectable, and that controls a service on the machine-to-machine communication, including: a reception unit configured to receive state information indicating a state of the user apparatus; and a communication control unit configured, when receiving a request for the user apparatus from an application server, to determine communication operation for the request based on the state information, and to execute determined communication operation.
    Type: Application
    Filed: January 28, 2015
    Publication date: January 19, 2017
    Applicants: NTT DOCOMO, INC., NEC Corporation
    Inventors: Takashi Koshimizu, Takanori Iwai, Tetsuo Inoue
  • Patent number: 9544821
    Abstract: A mobile communication system and method that includes a radio access system employing a first communication scheme supporting packet-switched communication and a radio access system employing a second communication scheme supporting both circuit-switched communication and the packet-switched communication. The mobile communication system is configured to switch between a first communication state and a second communication state realizing single radio voice call continuity (SRVCC). The first communication state is when a first mobile station visits the radio access system employing the first communication scheme, and performs voice communication with a second mobile station and packet communication by using packet-switched system.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: January 10, 2017
    Assignee: NEC Corporation
    Inventors: Katsutoshi Nishida, Takashi Koshimizu, Toshiyuki Tamura
  • Publication number: 20160212617
    Abstract: An eUICC 100 embedded in an UE 200 authenticates an AUTN transmitted from an HSS 300, and calculates a transfer key TK by using a secret key K. The eUICC 100 acquires a transfer Token by decoding an enc Token by using the transfer key TK, and acquires a new Customer ID by decoding an enc New ID by using the transfer key TK. The eUICC 100 transmits a user auth resp in response to a User auth+transfer Setup Req including the AUTN, the enc Token, and the enc New ID to the HSS 300. The eUICC 100 generates a shared-Secret Key shared between the eUICC 100 and an HSS 400 by using the transfer Token, and executes an attach procedure for the HSS 400 by using the generated shared-Secret Key and the new Customer ID.
    Type: Application
    Filed: August 25, 2014
    Publication date: July 21, 2016
    Applicant: NTT DOCOMO, INC.
    Inventors: Takashi Koshimizu, Hiroshi Aono, Alf Zugenmaier