Patents by Inventor Marcus Dibuduo

Marcus Dibuduo 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).

  • Multipath assistance for pilot phase measurement processes
    Patent number: 6999778
    Abstract: A method for enhancing the accuracy of Advanced Forward Link Trilateration (AFLT) position location calculations is disclosed. A position determination entity (PDE) constructs a statistical database of pilot phase measurements reported by mobile stations (MSs) located in a geographic region about a reference base station (BS). When a MS's location is to be calculated, the MS reports a set of PN phase offsets to the PDE. Using only that set of PN phase offsets, the PDE determines a rough estimate of the MS's location using conventional AFLT and also determines the region within which the MS is located. If the PDE determines that the MS did not report one or more earlier arriving PN phase offsets but reported a delayed multipath component, the PDE sends a message to the MS to look for an earlier arriving PN phase offset at a certain time prior to the reported PN phase offset.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: February 14, 2006
    Assignee: Denso Corporation
    Inventor: Marcus DiBuduo
  • Dynamic second stage filtering for pilot energy strength measurements
    Patent number: 6980781
    Abstract: A wireless communication system exposes first stage filtered energy estimates to a second stage filter whose length dynamically varies with time. With the second stage filter, it is possible to further suppress noise in low SNR conditions without affecting the overall filtering response time.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: December 27, 2005
    Assignee: DENSO Corporation
    Inventor: Marcus Dibuduo
  • Multipath assistance for pilot phase measurement processes
    Publication number: 20040203864
    Abstract: A method for enhancing the accuracy of Advanced Forward Link Trilateration (AFLT) position location calculations is disclosed. A position determination entity (PDE) constructs a statistical database of pilot phase measurements reported by mobile stations (MSs) located in a geographic region about a reference base station (BS). When a MS's location is to be calculated, the MS reports a set of PN phase offsets to the PDE. Using only that set of PN phase offsets, the PDE determines a rough estimate of the MS's location using conventional AFLT and also determines the region within which the MS is located. If the PDE determines that the MS did not report one or more earlier arriving PN phase offsets but reported a delayed multipath component, the PDE sends a message to the MS to look for an earlier arriving PN phase offset at a certain time prior to the reported PN phase offset.
    Type: Application
    Filed: July 3, 2002
    Publication date: October 14, 2004
    Applicant: DENSO CORPORATION
    Inventor: Marcus DiBuduo
  • Dynamic second stage filtering for pilot energy strength measurements
    Publication number: 20020142742
    Abstract: A wireless communication system exposes first stage filtered energy estimates to a second stage filter whose length dynamically varies with time. With the second stage filter, it is possible to further suppress noise in low SNR conditions without affecting the overall filtering response time.
    Type: Application
    Filed: February 11, 2002
    Publication date: October 3, 2002
    Inventor: Marcus Dibuduo