Patents by Inventor Keiichi Kubota

Keiichi Kubota 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: 11153820
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes receiving, by the UE, a first transmission on a beam over a radio frequency spectrum during a first time interval. The first transmission includes an indication of a subsequent physical downlink control channel (PDCCH) transmission on the beam. The indication includes information about a PDCCH in a second time interval subsequent to the first time interval. The method also includes configuring a power saving state of the UE based at least in part on the indication. A method for wireless communication at a network access device includes transmitting the first transmission to at least one UE, and transmitting the PDCCH during the second time interval.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: October 19, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Aleksandar Damnjanovic, Karl Georg Hampel, Keiichi Kubota, Andrei Radulescu, Haitong Sun, Ozcan Ozturk, Peng Cheng, Linhai He
  • Patent number: 11153792
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for signaling to and/or from a UE in an inactive state.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: October 19, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Gavin Bernard Horn, Soo Bum Lee, Keiichi Kubota
  • Patent number: 11147093
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a system information (SI) message in an overlapped scheduling window; and identify the SI message based at least in part on at least one of: downlink control information (DCI) for the SI message, a system information radio network temporary identifier (SI-RNTI) of the SI message, a time location of the SI message in the overlapped scheduling window, a search space for the DCI, or a combination thereof. Numerous other aspects are provided.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: October 12, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Heechoon Lee, Keiichi Kubota
  • Patent number: 11140742
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for cell DTX (Discontinuous Transmission) scheduling. A Base Station (BS) determines an operational schedule for the BS including at least one ON period and at least one OFF period, wherein the BS provides a reduced level of service during the at least one OFF period relative to the at least one ON period. The BS transmits the determined operational schedule. A User Equipment (UE) receives the BS's operational schedule and determines, based on the BS's operational schedule and its own operational schedule also including ON and OFF periods, whether to perform at least one service associated with the BS.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: October 5, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Luis Lopes, Masato Kitazoe
  • Patent number: 11140600
    Abstract: Systems and techniques are disclosed to separate paging and access cell selection (and use) among available cells based on different paging cell and access cell requirements and specific service availability. A UE selects a first cell that meets paging cell requirements as a paging cell and a second cell that meets service requirements as an access cell. Once the UE selects a paging cell, the UE camps on the paging cell to wait for a paging request or a mobile originated request. The UE can select and camp on the access cell prior to a data need, where latency requirements are strict, or delay access cell selection until there is data to transmit where latency requirements are more lax. The UE may also include measurement information of surrounding cells with a paging response/service request, which a core network uses to speed up establishment of dual connectivity or carrier aggregation.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: October 5, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Keiichi Kubota, Gavin Bernard Horn
  • Publication number: 20210289457
    Abstract: An access node may provide synchronization information to a UE. The access node may further provide one or more information blocks, which may include basic network configuration information. Based on the synchronization information and/or the information block(s), the UE may transmit a message to the access node that includes a random access preamble, an identifier of the UE, and/or a buffer status report. Based on the message from the UE, the access node may determine that the UE should remain active and, therefore, may transmit a response to the first message to the UE indicating that the UE should remain active. Thereafter, the UE may receive a connection setup or connection reconfiguration message. The connection setup or reconfiguration message may be received from the same or different access node from which the UE received the synchronization information and/or the one or more information blocks.
    Type: Application
    Filed: June 4, 2021
    Publication date: September 16, 2021
    Inventors: Saurabha Rangrao Tavildar, Joseph Binamira Soriaga, Tingfang Ji, Keiichi Kubota
  • Patent number: 11115903
    Abstract: Various aspects of the disclosure relate to delivering a limited amount of system information. For example, the delivery of system information may be divided into broadcasting a limited amount of the system information and using unicast signaling for delivery of the remaining system information. In some aspects, the delivery of a limited amount of system information may involve broadcasting a compressed PLMN ID list (e.g., broadcasting indications of PLMNs). In some aspects, the delivery of a limited amount of system information may involve broadcasting an indication of the version of system information that is valid for a cell. In some aspects, the delivery of a limited amount of system information may involve broadcasting multiple configurations of system information along with indications of each configuration. In some aspects, the delivery of a limited amount of system information may involve broadcasting compressed non-cell-related system information.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 7, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Karl Georg Hampel, Gavin Bernard Horn, Keiichi Kubota, Ravi Agarwal, Peng Cheng
  • Patent number: 11115911
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain access to a base station by performing an initial access procedure within an initial access bandwidth that contains control channel resources. The UE may receive a configuration of a downlink bandwidth part (BWP) following the initial access procedure, and may determine that the downlink BWP fully contains the initial access bandwidth. In some cases, the UE may make the determination based on an indication sent from the base station. For instance, the indication may be provided as part of one or more control channel configurations transmitted to the UE. Based on determining that the downlink BWP fully contains the initial access bandwidth, the UE may monitor for control information in the downlink BWP using control channel resources in the downlink BWP that correspond to control channel resources used in the initial access bandwidth.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: September 7, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Huilin Xu, Prashanth Haridas Hande, Heechoon Lee, Peter Pui Lok Ang, Keiichi Kubota
  • Patent number: 11115939
    Abstract: New radio (NR) power headroom report (PHR) design for millimeter wave (mmWave) deployment is discussed. The power control process for mmWave may include beam-specific periodic PHR reporting and user equipment (UE)-specific event-trigger PHR reporting. The periodic PHR reporting may either provide a single PHR that includes power headroom information for each of the serving beams, or the UE may be configured to measure and report PHR for different beams in different slots. When reporting a single PHR with power headroom information for multiple serving beams, a beam index may be included in the reserved bits of the PHR. For the event-trigger PHR, the PHR reported based on a detected event trigger may provide power headroom information only for the current serving beam, or for all serving beams.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: September 7, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Peng Cheng, Keiichi Kubota, Gavin Bernard Horn, Aleksandar Damnjanovic, Tao Luo, Linhai He
  • Publication number: 20210274409
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes identifying, while the UE is in a connected mode with a network, a radio resource configuration of the UE, selecting a dedicated set of resources for the UE or a common set of resources for a plurality of UEs based at least in part on the identified radio resource configuration, and transmitting a pilot signal to the network using the selected set of resources. Methods for wireless communication at a network access device and a network access device controller are also described.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 2, 2021
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Tingfang Ji, Joseph Binamira Soriaga, Kambiz Azarian Yazdi, Saurabha Rangrao Tavildar
  • Patent number: 11071078
    Abstract: Discovery and synchronization channels are discussed for user-tracking zones in a cellular network. User-tracking zones reduce the mobility tracking burden on the UE and shift the tracking responsibility to the network. This shift allows for UE and network power savings from reduced searching at the UE as well as through efficient paging area tracking and less broadcast signaling. The various aspects provide channel design for initial synchronization and discovery of the user-tracking zones. A single frequency network (SFN) synchronization channel is provided with at least a reference signal for time synchronization and payload information that may include a zone identifier (ID), formatting for a system information transmission request, and resource allocation for the request. The zone ID may be included in the payload or embedded into the reference signal. Facility is also provided for handling zone nodes of different power classes that allows for maintaining the SFN operations.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: July 20, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Joseph Binamira Soriaga, Tingfang Ji, Yichao Huang, Naga Bhushan, Gavin Bernard Horn, Keiichi Kubota
  • Patent number: 11064549
    Abstract: Methods, systems, and devices for wireless communications are described that provide for configuration of channel bandwidth that may be specific to a particular user equipment (UE). A UE may be configured with a channel bandwidth that is less than or equal to a channel bandwidth of the serving base station, and may also be different than a channel bandwidth of one or more other UEs that are served by the base station. The base station may signal the UE-specific channel bandwidth in UE-specific signaling, such as UE-specific radio resource control (RRC) signaling.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: July 13, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Pui Lok Ang, Tingfang Ji, John Edward Smee, Masato Kitazoe, Keiichi Kubota, Peter Gaal, Joseph Binamira Soriaga, Hung Dinh Ly, Valentin Alexandru Gheorghiu, Renqiu Wang
  • Patent number: 11051259
    Abstract: An access node may provide synchronization information to a UE. The access node may further provide one or more information blocks, which may include basic network configuration information. Based on the synchronization information and/or the information block(s), the UE may transmit a message to the access node that includes a random access preamble, an identifier of the UE, and/or a buffer status report. Based on the message from the UE, the access node may determine that the UE should remain active and, therefore, may transmit a response to the first message to the UE indicating that the UE should remain active. Thereafter, the UE may receive a connection setup or connection reconfiguration message. The connection setup or reconfiguration message may be received from the same or different access node from which the UE received the synchronization information and/or the one or more information blocks.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: June 29, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Saurabha Rangrao Tavildar, Joseph Binamira Soriaga, Tingfang Ji, Keiichi Kubota
  • Patent number: 11051352
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to operate in dual connectivity (DC) and with split radio bearers, such that one or more split radio bearers are associated with a first cell group and one or more split radio bearers are associated with a second cell group. In some cases, a cell group failure may occur. Accordingly, the UE may autonomously update one or more radio bearer configurations of the split radio bearers to determine a processing scheme for the cell group failure. Additionally or alternatively, as a result of the cell group failure, an amount of unacknowledged data in a radio link control (RLC) buffer for the second cell group may get stuck such that the network cannot access it. Accordingly, the UE may perform a PDCP data recovery (e.g., user plane handling) to access the unacknowledged data.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 29, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Yu-Ting Yu, Keiichi Kubota, Gavin Bernard Horn
  • Patent number: 11039351
    Abstract: A wireless network may provide system information by either a fixed periodic broadcast or broad-beam transmission or in response to a request by a user equipment (UE). The wireless network may broadcast (or broad-beam transmit) a signal that indicates to the UEs within a cell or zone coverage area that system information is to be transmitted on a fixed periodic schedule or in response to a request sent by one or more UEs.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 15, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Tingfang Ji, Naga Bhushan, Gavin Bernard Horn, John Edward Smee, Joseph Binamira Soriaga, Wei Zeng
  • Patent number: 11032783
    Abstract: Methods, systems, and devices for wireless communication are described. A per-frequency indication providing deployment options for communication with a core network may be used for enhanced cell selection by a user equipment (UE). For example, system information transmitted by a base station may provide information elements that indicate, per radio frequency (or per radio frequency (RF) spectrum band)), deployment options associated with nearby cells. In such cases, the UE may determine whether to access the radio frequencies or RF bands of these cells based on the capabilities of the UE. In some cases, the UE may further determine whether the nearby cells are available based on the availability of a service through those cells. Accordingly, the UE may select one of the radio frequencies or bands corresponding to the cell having a network connectivity configuration that supports the UE's capabilities.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 8, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn
  • Patent number: 11026142
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes identifying, while the UE is in a connected mode with a network, a radio resource configuration of the UE, selecting a dedicated set of resources for the UE or a common set of resources for a plurality of UEs based at least in part on the identified radio resource configuration, and transmitting a pilot signal to the network using the selected set of resources. Methods for wireless communication at a network access device and a network access device controller are also described.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: June 1, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Tingfang Ji, Joseph Binamira Soriaga, Kambiz Azarian Yazdi, Saurabha Rangrao Tavildar
  • Patent number: 11006342
    Abstract: Methods, systems, and devices for wireless communications are described that provide a handover may be performed based on one or more conditions at a UE and in conjunction with a handover procedure from a source base station to a target base station. The one or more conditions at the UE may be associated with successful establishment or maintenance of the second connection. In some cases, the one or more conditions at the UE may correspond to one or more measurements associated with the source base station, the target base station, one or more neighboring base stations, or any combinations thereof.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: May 11, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Karthika Paladugu, Keiichi Kubota, Gavin Bernard Horn, Prashanth Haridas Hande
  • Patent number: 10993181
    Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a first base station for wireless communication, associated with a first radio access technology (RAT), may generate a message to cause a user equipment to wake up from a power saving state or to reconfigure a cycle associated with the power saving state, wherein the message includes an indication that the user equipment is to wake up from the power saving state or to reconfigure the cycle; and/or transmit the message toward the user equipment via a second base station, associated with a second RAT and the user equipment, to cause the user equipment to wake up from the power saving state or reconfigure the cycle. Numerous other aspects are provided.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: April 27, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Linhai He, Ozcan Ozturk, Gavin Bernard Horn, Keiichi Kubota
  • Patent number: 10972947
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message that indicates a change from an evolved universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) packet data convergence protocol (PDCP) to a New Radio (NR) PDCP, wherein the message includes an instruction to perform an intra-cell handover; generate one or more security keys based at least in part on receiving the message that includes the instruction to perform the intra-cell handover; and communicate using the one or more security keys after the intra-cell handover is performed. Numerous other aspects are provided.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: April 6, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Arun Prasanth Balasubramanian, Masato Kitazoe, Yu-Ting Yu, Keiichi Kubota