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: 10582523
    Abstract: The apparatus for wireless communication includes a processing system. The processing system is configured to establish a first radio link with a master base station, establish a second radio link with a first cell associated with a secondary base station, wherein the second radio link comprises a SRB, receive a RRC connection reconfiguration signal from the second radio link SRB to enable measurement reports associated with the second radio link, and provide a measurement report to the secondary base station associated with the second radio link using the second radio link SRB.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: March 3, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Aziz Gholmieh, Soo Bum Lee, Ozcan Ozturk, Ajay Gupta
  • Patent number: 10575226
    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: December 17, 2018
    Date of Patent: February 25, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Tingfang Ji, Naga Bhushan, Gavin Bernard Horn, John Edward Smee, Joseph Binamira Soriaga, Wei Zeng
  • Patent number: 10568161
    Abstract: Aspects of the present disclosure provide methods and apparatus for improving UL-based mobility. As described herein, a UE may determine it has failed to decode a first keep alive (KA) signal during a wake period of a discontinuous receive (DRx) cycle and may extend the wake period to monitor for a second KA signal, in response to the determination. An access network controller may select, while a (UE) is currently served by a first transmit/receive point (TRP), a second TRP to serve the UE, configure the first TRP to transmit a first keep alive (KA) signal, in response to a chirp signal received from the UE, and configure the second TRP to transmit a second KA signal after the first KA signal transmitted by the first TRP.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: February 18, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kambiz Azarian Yazdi, Tingfang Ji, Haitong Sun, Gavin Bernard Horn, Keiichi Kubota
  • Publication number: 20200053811
    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: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    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
  • Publication number: 20200045726
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may identify a scheduling window associated with acquiring a system information message, wherein the scheduling window is based at least in part on control channel monitoring occasions associated with a control channel, wherein the control channel is to schedule a data channel that includes the system information message; and receive the control channel based at least in part on the scheduling window, wherein the control channel is received within the scheduling window. Numerous other aspects are provided.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Inventors: Hung Dinh LY, Tao LUO, Keiichi KUBOTA, Heechoon LEE, Peter Pui Lok ANG
  • Publication number: 20200029358
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a request message to a base station while operating in an idle mode. The base station may generate, in response to the request message, a response message including a random access preamble index corresponding to the received request message. In some cases, the base station may determine a radio network temporary identifier (RNTI) based on the random access preamble index and scramble a cyclic redundancy check (CRC) of the response message with the RNTI. In some examples, the random access preamble index may be included in a payload of the response message. The UE may monitor a physical downlink control channel for the response message to the request message and receive the response message on the physical downlink control channel.
    Type: Application
    Filed: July 18, 2019
    Publication date: January 23, 2020
    Inventors: Sony Akkarakaran, Tao Luo, Keiichi Kubota
  • Patent number: 10542416
    Abstract: Various aspects described herein relate to techniques for mobility mode selection in uplink-based and downlink-based mobility in wireless communications systems. In an aspect, a method for wireless communications may include determining that a user equipment (UE) is operating in a first mobility mode, determining whether the UE satisfies at least one condition associated with mobility of the UE for mobility mode selection, and selecting a second mobility mode based on a determination that the UE satisfies the at least one condition, wherein each of the first mobility mode and the second mobility mode is an uplink mobility mode or a downlink mobility mode. The techniques described herein may apply to different communications technologies, including the 5th Generation (5G) New Radio (NR) communications technology.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 21, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Hung Dinh Ly, Heechoon Lee, Haitong Sun, Tingfang Ji, Wanshi Chen, Keiichi Kubota
  • Patent number: 10542547
    Abstract: Systems and techniques are disclosed for selecting service-specific cells that considers additional information about service availability at the cells. A base station stores service availability information in system information. A UE searching for a service-specific cell on which to camp receives the system information with service availability. The UE analyzes its service requirements against the service availability as well as measured radio conditions and selects a cell that enables service-specific support on which to camp. When a change occurs to availability of the service support at the base station, it notifies the camped UE of the change and the UE obtains the changed system information to determine whether to reselect a different cell on which to camp. When a service-specific cell is not available, the UE may select a suitable cell for normal service and periodically perform cell reselection in an attempt to again camp on a service-specific cell.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: January 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Chih Ping Li
  • Patent number: 10542507
    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 2, 2015
    Date of Patent: January 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph Binamira Soriaga, Tingfang Ji, Yichao Huang, Naga Bhushan, Keiichi Kubota, Gavin Bernard Horn
  • Patent number: 10536955
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for coordinating UE capabilities across RATs. In some cases, a UE may provide an indication of one or more first sets of capabilities of the UE to operate in a first RAT network that are compatible with one or more second sets of capabilities of the UE to operate in a second RAT network. Indicating the sets of capabilities may require less signaling overhead than explicitly signaling all possible combinations of capabililites.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: January 14, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Aziz Gholmieh, Gavin Bernard Horn, Keiichi Kubota, Masato Kitazoe, Srinivasan Balasubramanian
  • Publication number: 20200015292
    Abstract: Aspects of the present disclosure provide various techniques for requesting a system information block (SIB) and providing a SIB response for a user equipment (UE) in a UE-centric wireless communication network. In some aspects of the disclosure, the network may transmit the SIB to the UEs in a broadcast mode or in an on-demand mode.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Inventors: Saurabha TAVILDAR, Tingfang JI, Gavin Bernard HORN, Ravi AGARWAL, Keiichi KUBOTA
  • Publication number: 20200015136
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may autonomously initiate a handover procedure and select a target base station for the handover procedure. The UE may measure a signal from the source base station or the target base station, or both, and the UE may determine whether specific criteria at both base stations are within a pre-configured range. If the criteria at both base stations are within the pre-configured range, the UE may identify the target base station as a potential candidate for a handover. Accordingly, when the UE determines that radio conditions with the source base station are deteriorating (or fall below a threshold), the UE may initiate a handover to the target base station autonomously and without specific direction from the source base station.
    Type: Application
    Filed: April 5, 2017
    Publication date: January 9, 2020
    Inventors: Aleksandar Damnjanovic, Keiichi Kubota, Linhai He, Gavin Bernard Horn, Peng Cheng
  • Patent number: 10531388
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for optimizing delivery of a data to and/or from a UE in a connected but inactive state.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: January 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Soo Bum Lee, Masato Kitazoe, Gavin Bernard Horn
  • Publication number: 20200008224
    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: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventors: Ozcan OZTURK, Heechoon LEE, Keiichi KUBOTA
  • Patent number: 10524277
    Abstract: The apparatus for wireless communication includes a processing system. The processing system is configured to establish a first radio link with a master base station, establish a second radio link with a first cell associated with a secondary base station, wherein the second radio link comprises a SRB, and receiving a RRC connection reconfiguration signal from the second radio link SRB to establish the second radio link with a second cell.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 31, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Aziz Gholmieh, Soo Bum Lee, Ozcan Ozturk, Ajay Gupta
  • Publication number: 20190394708
    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: Application
    Filed: October 26, 2017
    Publication date: December 26, 2019
    Inventors: Aleksandar DAMNJANOVIC, Karl Georg HAMPEL, Gavin Bernard HORN, Keiichi KUBOTA, Ravi AGARWAL, Peng CHENG
  • Patent number: 10517002
    Abstract: Certain aspects of the present disclosure provide techniques for identifying a mismatch between a user's common search space (CSS) and user-specific search space (USS). A base station (BS) may receive an indication that a user equipment (UE) decoded at least one beamformed signal transmitted by the BS in a USS and did not decode at least one beamformed signal transmitted by the BS in a CSS. The BS may take one or more actions based, at least in part, on the indication. Similarly, a UE may decode at least one beamformed signal transmitted by a BS in a USS, transmit to the BS an indication that the UE decoded the at least one beamformed signal transmitted in the USS and did not decode at least one beamformed signal transmitted by the BS in a CSS, and take one or more actions based, at least in part, on the indication.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: December 24, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Makesh Pravin John Wilson, Sony Akkarakaran, Juan Montojo, Shengbo Chen, Keiichi Kubota
  • Publication number: 20190386982
    Abstract: In the present invention, a communication system (1) includes a relay system (10) disposed in a cloud-based network (3). The relay system (10) has: a push server (15) for delivering, in response to a call from an intercom (21), a push notification (P1), including an authentication token (13x) serving as a one-time password regarding the call, to a mobile terminal (5) over the cloud-based network (3); and a web server (16) for delivering an image (16p) of a visitor of the intercom (21) to the mobile terminal (5) on the basis of terminal authentication information including the authentication token (13x) supplied from the mobile terminal (5) over the cloud-based network (3).
    Type: Application
    Filed: August 9, 2017
    Publication date: December 19, 2019
    Inventors: Junya TSUTSUMI, Keiichi KUBOTA, Satoshi MATSUMOTO, Shigeo FUJISAKI, Tsuyoshi ITO
  • Publication number: 20190387561
    Abstract: Methods, systems, and devices for wireless communications are described. A wireless communications system may support multi-connectivity for a user equipment (UE) with multiple distributed units (DUs) under one central unit (CU), the DUs and the CU belonging to a base station. The UE may establish radio resource control (RRC) connections with multiple cell groups corresponding to multiple DUs under the CU. The UE may transmit measurement reports that provide measurement information for cells in proximity to the UE. The UE may maintain a set of active cell groups and a set of inactive cell groups. In some cases, one or more cell groups may be identified as controlling cell groups used to transmit control information. In some examples, the UE may replicate an uplink packets and transmit the uplink packet and replicates on multiple cell groups. In some cases, the UE may aggregate an uplink transmission among multiple cell groups.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Inventors: Karthika Paladugu, Yu-Ting Yu, Gavin Bernard Horn, Keiichi Kubota
  • Publication number: 20190380153
    Abstract: Logical channel prioritization and mapping to different numerologies is disclosed for 5G networks having multiple network slices operable for communication via logical channels associated with different numerologies. For user equipments (UEs) configured to handle multiple numerologies, different rules for mapping logical channels associated with different numerologies may be defined for data and non-data channels. Thus, when new data arrives at a UE for communication via a logical channel associated with a different numerology, the UE checks whether the mapping rules would allow multiplexing of the new numerology data onto an existing data channel. If no data channel has already been allocated or if an allocated data channel may not include data from the new numerology, then a mapping is followed for specifically requesting resources for communication of the new numerology data. The new mapping may trigger scheduling request or random access procedures specifically associated with the new numerology.
    Type: Application
    Filed: September 18, 2017
    Publication date: December 12, 2019
    Inventors: Aleksandar Damnjanovic, Gavin Bernard Horn, Keiichi Kubota, Peng Cheng, Masato Kitazoe, Aziz Gholmieh, Srinivasan Balasubramanian