Patents by Inventor Masato Fujishiro

Masato Fujishiro 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).

  • Cell reselection method and user equipment
    Patent number: 12028761
    Abstract: A cell reselection method is a method that allows a user equipment to perform cell reselection of reselecting a cell to be used as a serving cell. The cell reselection method includes: transitioning from an RRC connected state to an RRC inactive state when a message is received from a network, the message including a configuration of a RAN notification area in which paging for the user equipment is performed; and after the transitioning to the RRC inactive state, selecting, among cells included in the RAN notification area, a redistribution target configured with a highest priority in the cell reselection, based on the RAN notification area configured according to the message and a redistribution parameter broadcast from the network.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: July 2, 2024
    Assignee: KYOCERA Corporation
    Inventor: Masato Fujishiro
  • RELAY COMMUNICATION MANAGEMENT IN RESPONSE TO CELLULAR CONNECTION RADIO LINK FAILURE (RLF)
    Publication number: 20240214900
    Abstract: An initial relay user equipment (UE) device transmits a llu radio link failure (RLE) notification to a remote UE device when the Uu communication link from the initial relay UE device to the serving base station fails. The remote UE device refrains from sending signals to the serving base station through the initial relay UE device at least until receiving a Uu link reestablished notification indicating that the Uu communication link has been reestablished. In some situations, the remote UE device identifies a preferred candidate relay UE device after receiving the Uu RLF notification and selects the preferred candidate relay UE device for relay communication in response to receiving a Uu link reestablished notification indicating the Uu communication link could not be reestablished.
    Type: Application
    Filed: May 6, 2022
    Publication date: June 27, 2024
    Inventors: Henry CHANG, Masato FUJISHIRO
  • DISCOVERY RESOURCE SELECTION BASED ON RSRP VALUE OF A UU LINK
    Publication number: 20240205801
    Abstract: The devices, systems, and methods discussed herein include a first user equipment (UE) device receiving, from a base station, discovery resource pool configuration information indicating a first Uu link Reference Signal Received Power (RSRP) threshold, a second Uu link RSRP threshold, and a third Uu link RSRP threshold. The first UE device measures an RSRP value of a Uu link between the base station and the first UE device. The first UE device selects a discovery resource pool for discovery transmissions based on a comparison of the measured RSRP value relative to the first, second, and third llu link RSRP thresholds.
    Type: Application
    Filed: May 6, 2022
    Publication date: June 20, 2024
    Inventors: Henry CHANG, Masato FUJISHIRO
  • RELAY USER EQUIPMENT (UE) RADIO RESOURCE CONTROL (RRC) CONNECTION STATUS INDICATOR
    Publication number: 20240205993
    Abstract: A relay user equipment (UE) device transmits a Radio Resource Control (RRC) connection status indicator indicating the RRC connection status of the relay UE device to a serving base station. The RRC connection status indicator may be used by a remote UE device to manage relay communication to the base station. In one example, a remote UE device in direct communication with the base station transmits a measurement report to the base station where the measurement report includes measurements only for relay UE devices reporting a RRC connected (RRC CONN) status. The base station manages direct to indirect communication switching at least partially based on the measurement report. In another example, a remote UE device manages relay reselection using a relay candidate prioritization at least partially based on the connection status of candidate relay UE devices.
    Type: Application
    Filed: May 6, 2022
    Publication date: June 20, 2024
    Inventors: Henry CHANG, Masato FUJISHIRO
  • RANDOMIZATION OF MULTIPLE DISCOVERY RESOURCE TYPES
    Publication number: 20240205883
    Abstract: The devices, systems, and methods discussed herein include a first user equipment (UE) device receiving, from a base station, configuration information instructing the first UE device to randomize selection of a discovery resource pool for discovery transmissions. The first UE device randomly selects the discovery resource pool from a plurality of discovery resource pools. At least one of the plurality of discovery resource pools is a discovery resource pool that is separate from a data resource pool, and at least one of the plurality of discovery resource pools is a shared discovery and data resource pool.
    Type: Application
    Filed: May 6, 2022
    Publication date: June 20, 2024
    Inventors: Henry CHANG, Masato FUJISHIRO
  • INTER-UE COORDINATION REQUEST SIGNAL IN VEHICLE-TO-VEHICLE COMMUNICATIONS
    Publication number: 20240205920
    Abstract: The devices, systems, and methods discussed herein involve a first UE device transmitting a request for inter-UE coordination (ICC) information to a second UE device. The request for IUC information is transmitted within a set of physical resources containing control information indicating a Destination Layer 2 identifier (Destination L2 ID) associated with the second UE device. The second CE device transmits the IUC information to the first UE device. The first UE device selects, based at least partially on the IUC information, communication resources to be used for communication with the second UE device.
    Type: Application
    Filed: April 22, 2022
    Publication date: June 20, 2024
    Inventors: Amit KALHAN, Henry CHANG, Masato FUJISHIRO
  • PRIORITIZATION OF MULTIPLE DISCOVERY RESOURCE TYPES
    Publication number: 20240205800
    Abstract: The devices, systems, and methods discussed herein include a first user equipment (UE) device receiving, from a base station, discovery resource pool selection criteria prioritizing a first discovery resource pool over a second discovery resource pool. The first UE device senses whether a congestion level of the first discovery resource pool is above a threshold. When the congestion level of the first discovery resource pool is equal to or less than the threshold, the first UE device selects the first discovery resource pool for discovery transmissions. When the congestion level of the first discovery resource pool is above the threshold, the first UE device selects the second discovery resource pool for discovery transmissions.
    Type: Application
    Filed: May 6, 2022
    Publication date: June 20, 2024
    Inventors: Henry CHANG, Masato FUJISHIRO
  • COMMUNICATION CONTROL METHOD
    Publication number: 20240196186
    Abstract: A communication control method includes acquiring, by a first user equipment, second identification information to identify a second user equipment, and acquiring, by the second user equipment, first identification information to identify the first user equipment, the first user equipment and the second user equipment being in a state of discovery with each other. The communication control method further includes transmitting, by the first user equipment, the second identification information to a communication apparatus, and transmitting, by the second user equipment, the first identification information to the communication apparatus.
    Type: Application
    Filed: January 16, 2024
    Publication date: June 13, 2024
    Applicant: KYOCERA Corporation
    Inventor: Masato FUJISHIRO
  • COMMUNICATION CONTROL METHOD
    Publication number: 20240196285
    Abstract: In a first aspect, a communication control method is used in a mobile communication system including a user equipment and a base station, and being capable of performing wireless communication between the user equipment and the base station. The communication control method includes receiving, by a first layer of a user equipment in a Radio Resource Control (RRC) idle state or an RRC inactive state, system information from the base station. The communication control method includes notifying, by the first layer of the user equipment, a second layer higher than the first layer of at least one of first information indicating whether slice-specific cell reselection is available and second information indicating whether a slice-specific random access channel is available, based on the system information.
    Type: Application
    Filed: February 1, 2024
    Publication date: June 13, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Mitsutaka HATA
  • Communication control method and user equipment
    Patent number: 12010753
    Abstract: A communication control method according to one embodiment is a method in a mobile communication system. The communication control method includes receiving, by a user equipment in a Radio Resource Control (RRC) connected mode, an RRC release message from a base station, the RRC release message including a condition for releasing or suspending an RRC connection, performing, by the user equipment, data communication with the base station until the condition is met even in a case of receiving the RRC release message, and transitioning the user equipment to an RRC idle mode or an RRC inactive mode when the condition is met.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: June 11, 2024
    Assignee: KYOCERA Corporation
    Inventors: Masato Fujishiro, Henry Chang
  • Mobile communication system, user terminal, and base station
    Patent number: 12004252
    Abstract: A user equipment, method, and chipset receive from a base station resource information indicating usable radio resources for data transmitted in the direct communication, detect a power when receiving a radio signal directly transmitted from another user terminal, and determine, based on the result of the process, a radio resource used to transmit the data from among the usable radio resources indicated by the resource information.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: June 4, 2024
    Assignee: KYOCERA Corporation
    Inventors: Noriyoshi Fukuta, Kugo Morita, Masato Fujishiro
  • COMMUNICATION METHOD, USER EQUIPMENT, AND BASE STATION
    Publication number: 20240179799
    Abstract: In a first aspect, a communication method is a communication method used in a mobile communication system for supporting a multicast and broadcast service (MBS). The communication method includes: managing, by a user equipment having started reception of an MBS session from a base station, a first Packet Data Convergence Protocol (PDCP) variable updated in response to reception of a PDCP packet in the MBS session, the first PDCP variable being managed in a PDCP layer; and performing, by the user equipment, control of synchronizing the first PDCP variable with a second PDCP variable managed by the base station, in response to determining that the reception of the MBS session has been interrupted for a predetermined time.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventor: Masato FUJISHIRO
  • COMMUNICATION CONTROL METHOD
    Publication number: 20240179571
    Abstract: In a first aspect, a communication control method is used in a cellular communication system. The communication control method includes transmitting, by a relay node to a donor node, first information collected upon transmission of flow control feedback message or second information collected upon reception of the flow control feedback message. The communication control method includes receiving, by the donor node, the first information or the second information.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventor: Masato FUJISHIRO
  • COMMUNICATION CONTROL METHOD
    Publication number: 20240179609
    Abstract: In a first aspect, a communication control method is used in a cellular communication system. The communication control method includes: transmitting, by a relay node to a donor node, information indicating a Backhaul Adaptation Protocol (BAP) header rewriting function is supported; performing, by the donor node, configuration related to inter-topology routing for the relay node; and forwarding, by the relay node, a data packet in accordance with the configuration related to the inter-topology routing.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventor: Masato FUJISHIRO
  • COMMUNICATION CONTROL METHOD
    Publication number: 20240179543
    Abstract: In a first aspect, a communication control method is used in a cellular communication system. The communication control method includes: detecting, by a relay node, an occurrence of a failure in a backhaul link between the relay node and one of parent nodes of a first parent node and a second parent node, the relay node being configured with dual connectivity for the first parent node and the second parent node; and transmitting, by the relay node, a notification relating to detection of the failure to a child node of the relay node, when the relay node is not capable of uplink rerouting.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG
  • COMMUNICATION METHOD
    Publication number: 20240179580
    Abstract: In a first aspect, a communication method is used in a mobile communication system for supporting a multicast and broadcast service (MBS). The communication method includes: configuring, by a base station managing a first cell, a multicast radio bearer (MRB) including a Point-to-Multipoint (PTM) communication path for a user equipment in a radio resource control (RRC) connected state; switching, by the base station, from the PTM communication path to a Point-to-Point (PTP) communication path in response to determining handover of the user equipment from the first cell to a second cell; and executing, by the base station, the handover after the switching to the PTP communication path.
    Type: Application
    Filed: February 5, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG
  • COMMUNICATION METHOD
    Publication number: 20240179722
    Abstract: A communication method according to a first aspect is a communication method used by a user equipment that performs reception processing of a physical downlink control channel (PDCCH) from a base station by using a radio network temporary identifier (RNTI) and includes, when N (N?2) group RNTIs (G-RNTIs) are associated with one multicast broadcast service (MBS) session, specifying M (M?N) G-RNTIs to be used for the reception processing from among the N G-RNTIs, and performing the reception processing by using the M G-RNTIs.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG
  • COMMUNICATION METHOD AND USER EQUIPMENT
    Publication number: 20240179800
    Abstract: In a first aspect, a communication method is used in a mobile communication system for supporting a multicast and broadcast service (MBS). The communication method includes: determining, by a user equipment having started reception of an MBS session from a base station, whether a predetermined condition is satisfied indicating that the reception has started midway of the MBS session; and transmitting, by the user equipment to the base station lost packet identification information indicating a lost packet group from a start of the MBS session until a start of the reception, when determining that the predetermined condition is satisfied.
    Type: Application
    Filed: February 5, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG
  • COMMUNICATION METHOD
    Publication number: 20240179798
    Abstract: A communication method according to a first aspect is a communication method used in a mobile communication system supporting a multicast broadcast service (MBS) and includes transmitting, at a user equipment performing MBS reception or being interested in the MBS reception in a radio resource control (RRC) connected state, an RRC message to a base station. The transmitting includes transmitting the RRC message including an information element indicating a mode desired by the user equipment as an MBS delivery mode or an MBS reception mode from the base station.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG
  • COMMUNICATION METHOD, NETWORK APPARATUS, AND USER EQUIPMENT
    Publication number: 20240179797
    Abstract: In a first aspect, a communication method is performed by a user equipment in a mobile communication system. The communication method includes receiving a paging message including a TMGI from a base station when the user equipment is in an RRC inactive state, and starting a procedure of transitioning from the RRC inactive state to an RRC connected state when the user equipment is participating in an MBS session indicated by the TMGI.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Henry CHANG