Patents by Inventor Nobuyuki Tamaki

Nobuyuki Tamaki 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).

  • Patent number: 9635579
    Abstract: A personal wireless device is utilized to carry out measurements of one or more network-performance related metrics in response to a triggering event. The triggering event can be a message that is transmitted by a network element to the personal wireless device. The personal wireless device may be exemplified by a variety of personal devices such as, for example, a cellular phone, or a personal digital assistant (PDA). The measurements may be used to derive network-performance related information such as cellular signal coverage areas, signal hole areas, and signal interference areas.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: April 25, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Peter S. Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki
  • Publication number: 20170111884
    Abstract: Methods, systems and apparatuses for operation in long-term evolution (LTE) systems are provided, including a method implemented in a base station that may include receiving, from a wireless transmit/receive unit (WTRU) via a first interface, a first message including radio capability information associated with the WTRU; transmitting, to a mobility management entity (MME) via a second interface, a second message including the radio capability information; receiving, from the MME via the second interface, a paging message including the radio capability information; and determining whether to page the WTRU in idle mode based on the radio capability information. Also provided is another method implemented by a WTRU in a vicinity of a dormant cell. This method may include any of: receiving, from a dormant cell, a signal; receiving, from a serving cell, a trigger to initiate measurement of one or more dormant cells; and measuring the signal.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Inventors: Pouriya Sadeghi, J. Patrick Tooher, Janet A. Stern-Berkowitz, Moon-il Lee, Ghyslain Pelletier, Nobuyuki Tamaki, Shahrokh Nayeb Nazar, Li-Hsiang Sun
  • Patent number: 9553701
    Abstract: Methods, systems and apparatuses for operation in long-term evolution (LTE) systems are provided, including a method implemented in a base station. The method may include receiving, from a wireless transmit/receive unit (WTRU) via a first interface, a first message including radio capability information associated with the WTRU, transmitting, to a mobility management entity (MME) via a second interface, a second message including the radio capability information; receiving, from the MME via the second interface, a paging message requesting the WTRU be paged in idle mode, wherein the paging message includes the radio capability information associated with the WTRU; selecting, based on the radio capability information, a set of subframes to use for paging the WTRU in idle mode; and paging the WTRU in idle mode using the selected set of subframes.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 24, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Pouriya Sadeghi, J. Patrick Tooher, Janet A. Stern-Berkowitz, Moon-il Lee, Ghyslain Pelletier, Nobuyuki Tamaki, Shahrokh Nayeb Nazar, Li-Hsiang Sun
  • Publication number: 20160353440
    Abstract: Coverage enhancement of channels in a wireless communication system such as Long Term Evolution (LTE) and LTE-Advanced (LTE-A). Coverage enhancement may include repetition of a channel in the time and/or frequency domain, power boosting of the channel, and reference signal improvement for better channel estimation accuracy. Link adaptation techniques are described, where the link adaptation is dependent on a coverage enhancement (CE) or repetition level. An example method for link adaptation in a Wireless Transmit/Receive Unit (WTRU) in coverage enhancement (CE) mode includes determining the number of repetitions for an uplink channel, deriving the transmission power for the uplink channel based on the number of repetitions, and transmitting the channel with the determined number of repetitions at the transmission power level. Link adaptation based on CE level or repetition level is described for uplink and downlink channels including data, control, access, and broadcast channels.
    Type: Application
    Filed: January 28, 2015
    Publication date: December 1, 2016
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, J. Patrick Tooher, Nobuyuki Tamaki, Pouriya Sadeghi, Marian Rudolf
  • Publication number: 20160330011
    Abstract: Methods, apparatus and systems for enabling interference avoidance, for example from self and neighboring interference are disclosed. In one representative method implemented in a Wireless Transmit/Receive Unit (WTRU) using time-frequency (TF) resources in first and second directions, the method includes comprising TF resource muting or symbol muting, by the WTRU, one or more TF resources for communication in the first direction based on information associated with a communication in the second direction or subframe shortening, by the WTRU, by one or more TF resources for communication in the first direction based on information associated with a communication in the second direction.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 10, 2016
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, J. Patrick Tooher, Nobuyuki Tamaki
  • Publication number: 20160255544
    Abstract: Method and apparatus efficiently signal and use resources for wireless communications supporting circuit switched (CS) and packet switched sessions (PS). Signaling and interaction between the wireless transmit/receive unit (WTRU), and various network entities, such as the Mobility Management Entity (MME), the Visitor Location Register (VLR), and Base Stations (BS), are used to implement circuit switched fall back (CSFB) in a PS system.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Mahmoud Watfa, Behrouz Aghili, Ulises Olvera-Hernandez, Nobuyuki Tamaki, Pascal M. Adjakple, J. Patrick Tooher, Peter S. Wang
  • Publication number: 20160192376
    Abstract: Systems, methods, and instrumentalities are disclosed to describe cell selection in low cost machine type communication (LC-MTC) devices. An LTC-MC device may measure a plurality of downlink signals from a plurality of cells. The LTC-MC may detect a channel condition, e.g., by determining a cell with better uplink coverage than a downlink cell. The detection of the channel condition may include measuring an uplink pathloss. The LTC-MC may report the channel condition as a decoupled channel condition, e.g., when an uplink cell is identified with uplink coverage better than the downlink cell. The channel condition may be reported, e.g., via a set of Physical Random Access Channel (PRACH) preambles. The set of PRACH preambles may be predefined. The channel condition may be reported via a higher layer signaling.
    Type: Application
    Filed: August 7, 2014
    Publication date: June 30, 2016
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, J. Patrick Tooher, Nobuyuki Tamaki, Pouriya Sadeghi, Virgil Comsa, Samian Kaur, Stephen E. Terry
  • Publication number: 20160165476
    Abstract: A personal wireless device is utilized to carry out measurements of one or more network-performance related metrics in response to a triggering event. The triggering event can be a message that is transmitted by a network element to the personal wireless device. The personal wireless device may be exemplified by a variety of personal devices such as, for example, a cellular phone, or a personal digital assistant (PDA). The measurements may be used to derive network-performance related information such as cellular signal coverage areas, signal hole areas, and signal interference areas.
    Type: Application
    Filed: February 10, 2016
    Publication date: June 9, 2016
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Peter S. Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki
  • Patent number: 9338701
    Abstract: Method and apparatus efficiently signal and use resources for wireless communications supporting circuit switched (CS) and packet switched sessions (PS). Signaling and interaction between the wireless transmit/receive unit (WTRU), and various network entities, such as the Mobility Management Entity (MME), the Visitor Location Register (VLR), and Base Stations (BS), are used to implement circuit switched fall back (CSFB) in a PS system.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 10, 2016
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Mahmoud Watfa, Behrouz Aghili, Ulises Olvera-Hernandez, Nobuyuki Tamaki, Pascal M. Adjakple, J. Patrick Tooher, Peter S. Wang
  • Patent number: 9288705
    Abstract: A personal wireless device is utilized to carry out measurements of one or more network-performance related metrics in response to a triggering event. The triggering event can be a message that is transmitted by a network element to the personal wireless device. The personal wireless device may be exemplified by a variety of personal devices such as, for example, a cellular phone, or a personal digital assistant (PDA). The measurements may be used to derive network-performance related information such as cellular signal coverage areas, signal hole areas, and signal interference areas.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 15, 2016
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Peter S. Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki
  • Publication number: 20160043849
    Abstract: Embodiments contemplate enhanced physical downlink control channel (EPDCCH). A user equipment (UE) or a wireless transmit/receive unit (WTRU) may receive a first type (e.g., type 1) EPDCCH common search space (CSS) subframe for example is a subset of subframes. The UE or WTRU may monitor first type downlink control information (DCI), for example perhaps within the first type EPDCCH CSS subframe, among other scenarios. A broadcast channel (e.g. MIB) may be received in the first type EPDCCH CSS. The UE or the WTRU may receive configuration information for a second type (e.g., type 2) EPDCCH CSS, for example from the first type EPDCCH CSS. A system information block (SIB) may be received in the second type EPDCCH CSS. The UE or the WTRU may monitor a second type DCI, for example perhaps in the second type EPDCCH CSS.
    Type: Application
    Filed: April 3, 2014
    Publication date: February 11, 2016
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Moon-il Lee, Nobuyuki Tamaki
  • Publication number: 20160029289
    Abstract: A method and apparatus for supporting communication buffer status reports (BSRs) are disclosed. A wireless device may transmit data to at least one group of wireless transmit/receive units (WTRUs). The wireless device may produce a BSR, which may include an indication associated with a group of WTRUs and an indication of an amount of data that the wireless device has buffered to transmit to the group of WTRUs. The wireless device may transmit the BSR to an eNodeB (eNB). The BSR may include a plurality of indications associated with a respective plurality of groups of WTRUs and respective indications of amounts of data that the wireless device has buffered to transmit each of the plurality of groups. The indication of the amount of data that the wireless device has buffered to transmit to the group of WTRUs may identify a total across all logical channels of the group of WTRUs.
    Type: Application
    Filed: October 7, 2015
    Publication date: January 28, 2016
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Peter S. Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki, Stephen E. Terry, Mihaela C. Beluri, Kai Liu
  • Publication number: 20160029239
    Abstract: A method and apparatus are described for controlling uplink (UL) transmission power. A wireless transmit/receive unit (WTRU) may receive a configuration of UL subframe sets and maintain a plurality of transmit power control (TPC) command accumulator values that correspond to respective ones of the UL subframe sets. The WTRU may receive a TPC command in a subframe n of a downlink (DL) transmission, determine a subframe n+k of a UL transmission that the received TPC command corresponds to, determine which of the UL subframe sets the UL transmission subframe n+k belongs to, and adjust a TPC command accumulator value that corresponds to the determined UL subframe set to determine power of the UL transmission when transmitting in the UL transmission subframe, where n is an integer, and k is an integer greater than zero.
    Type: Application
    Filed: April 1, 2014
    Publication date: January 28, 2016
    Inventors: Pouriya SADEGHI, Janet A. STERN-BERKOWITZ, Shahrokh NAYEB NAZAR, J. Patrick TOOHER, Moon-il LEE, Nobuyuki TAMAKI, Ananth KINI
  • Publication number: 20160014720
    Abstract: A method and apparatus are described for providing multimedia broadcast multicast services (MBMS) service feedback. A wireless transmit/receive unit (WTRU) may receive an MBMS service query message over an MBMS control channel and transmit an MBMS service response. The MBMS service query message and MBMS service response message may be radio resource controller messages. The MBMS service query message may include MBMS service identifiers which identify MBMS services that the WTRU is receiving or intending to receive. The WTRU may generate a report with MBMS service identifier index values, where each MBMS service identifier index value indicates a position of a service identifier corresponding to an MBMS service in the original query list that the WTRU is currently receiving or intending to receive. The MBMS service status query message may be received alone or along with a MBSFNAreaConfiguration message. The WTRU may respond within a predetermined or configured time limit.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 14, 2016
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Peter S. Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki, Stephen E. Terry, Kai Liu
  • Publication number: 20150327255
    Abstract: Embodiments contemplate enabling relay node uplink control information transmission on an interface between a relay node and a donor eNodeB (DeNB) in one or more subframes. Embodiments contemplate techniques to avoid restrictions on uplink transmissions on a cell (perhaps due to subframe configuration), such as on a primary cell, where the restrictions may make relay node uplink control information transmission difficult (if not impossible) on the interface between a relay node and a donor eNodeB (DeNB). Embodiments also contemplate that resources on the interface between the relay node and the donor eNodeB may be scheduled across one or more component carriers or serving cells.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 12, 2015
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Nobuyuki Tamaki, Ghyslain Pelletier, Janet A. Stern-Berkowitz, Pouriya Sadeghi, Sung-Hyuk Shin
  • Patent number: 9125188
    Abstract: Embodiments contemplate enabling relay node uplink control information transmission on an interface between a relay node and a donor eNodeB (DeNB) in one or more subframes. Embodiments contemplate techniques to avoid restrictions on uplink transmissions on a cell (perhaps due to subframe configuration), such as on a primary cell, where the restrictions may make relay node uplink control information transmission difficult (if not impossible) on the interface between a relay node and a donor eNodeB (DeNB). Embodiments also contemplate that resources on the interface between the relay node and the donor eNodeB may be scheduled across one or more component carriers or serving cells.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 1, 2015
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Nobuyuki Tamaki, Ghyslain Pelletier, Janet A. Stern-Berkowitz, Pouriya Sadeghi, Sung-Hyuk Shin
  • Patent number: 9088926
    Abstract: A method for performing radio usage measurements to support radio link operations and/or load balancing may be performed at an evolved Node B (eNB). The method may include determining a first radio usage parameter. The first radio usage parameter may be a measurement of radio usage between an eNB and at least one wireless transmit receive unit (WTRU). The method may further include determining a second radio usage parameter. The second radio usage parameter may be a measurement of radio usage between the eNB and at least one relay node (RN) served by the eNB. The method may further include utilizing at least one of the first radio usage parameter or the second radio usage parameter to evaluate at least one of evolved universal terrestrial radio access (E-UTRA) radio link operations, radio resource management (RRM), network operations and maintenance (OAM), and self-organizing networks (SON) functions or functionalities.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 21, 2015
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Kai Liu, Peter S. Wang, Nobuyuki Tamaki, Janet A. Stern-Berkowitz, Stephen E. Terry
  • Publication number: 20150201353
    Abstract: Apparatus and methods of handing over a wireless transmit/receive unit (WTRU) that belongs to a group of WTRUs from an originating base station to a target base station are described. A method includes the WTRU obtaining information regarding a group to which the WTRU has been assigned and the WTRU receiving at least one of handover reconfiguration information that is common to the group and handover reconfiguration information that is specific to the WTRU. On a condition that the WTRU receives the handover reconfiguration information that is specific to the WTRU, the WTRU initiates a synchronization procedure with the target base station based at least on the received handover reconfiguration information.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 16, 2015
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Nobuyuki Tamaki, Pouriya Sadeghi, Janet A. Stern-Berkowitz, Christopher R. Cave, Stephen E. Terry
  • Patent number: 9084224
    Abstract: A method and apparatus are described for providing multimedia broadcast multicast services (MBMS) service feedback. A wireless transmit/receive unit (WTRU) may receive an MBMS service query message over an MBMS control channel and transmit an MBMS service response. The MBMS service query message and MBMS service response message may be radio resource controller messages. The MBMS service query message may include MBMS service identifiers which identify MBMS services that the WTRU is receiving or intending to receive. The WTRU may generate a report with MBMS service identifier index values, where each MBMS service identifier index value indicates a position of a service identifier corresponding to an MBMS service in the original query list that the WTRU is currently receiving or intending to receive. The MBMS service status query message may be received alone or along with a MBSFNAreaConfiguration message. The WTRU may respond within a predetermined or configured time limit.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: July 14, 2015
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Peter Wang, Janet A. Stern-Berkowitz, Nobuyuki Tamaki, Stephen E. Terry, Kai Liu
  • Patent number: 8989741
    Abstract: Apparatus and methods of handing over a wireless transmit/receive unit (WTRU) that belongs to a group of WTRUs from an originating base station to a target base station are described. A method includes the WTRU obtaining information regarding a group to which the WTRU has been assigned and the WTRU receiving at least one of handover reconfiguration information that is common to the group and handover reconfiguration information that is specific to the WTRU. On a condition that the WTRU receives the handover reconfiguration information that is specific to the WTRU, the WTRU initiates a synchronization procedure with the target base station based at least on the received handover reconfiguration information.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: March 24, 2015
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Nobuyuki Tamaki, Pouriya Sadeghi, Janet A. Stern-Berkowitz, Christopher R. Cave, Stephen E. Terry