Patents by Inventor Masaki Machimoto

Masaki Machimoto 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).

  • IP multimedia subsystem, proxy session control apparatus, and communication control method
    Patent number: 9839063
    Abstract: A P-CSCF (310) includes a terminating call processing unit (311) which receives SIP INVITE from an S-CSCF. The SIP INVITE includes an identifier of UE, and is relayed in response to acceptance of a terminating call to the UE. The P-CSCF (310) further includes: a restoration execution unit (313) which executes restoration of a subscriber profile linked with the UE based on reception of the SIP INVITE; and an address holding unit (315) which holds an address of a PCRF included in a response received from a DRA along with the execution of the restoration. The restoration execution unit reestablishes a session between the UE and the PCRF based on the held address of the PCRF, and causes the UE to execute re-registration with an IP multimedia subsystem.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: December 5, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Itsuma Tanaka, Masaki Machimoto, Kenta Oonishi, Zhen Miao
  • IP MULTIMEDIA SUBSYSTEM, PROXY SESSION CONTROL APPARATUS, AND COMMUNICATION CONTROL METHOD
    Publication number: 20160249401
    Abstract: A P-CSCF (310) includes a terminating call processing unit (311) which receives SIP INVITE from an S-CSCF. The SIP INVITE includes an identifier of UE, and is relayed in response to acceptance of a terminating call to the UE. The P-CSCF (310) further includes: a restoration execution unit (313) which executes restoration of a subscriber profile linked with the UE based on reception of the SIP INVITE; and an address holding unit (315) which holds an address of a PCRF included in a response received from a DRA along with the execution of the restoration. The restoration execution unit reestablishes a session between the UE and the PCRF based on the held address of the PCRF, and causes the UE to execute re-registration with an IP multimedia subsystem.
    Type: Application
    Filed: September 22, 2014
    Publication date: August 25, 2016
    Applicant: NTT DOCOMO, INC.
    Inventors: Itsuma Tanaka, Masaki Machimoto, Kenta Oonishi, Zhen Miao