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公开(公告)号：US20220159485A1
公开(公告)日：2022-05-19
申请号：US17666068
申请日：2022-02-07
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO , Henry CHANG
IPC: H04W24/04
Abstract: A communication control method according to a first aspect is a method used in a mobile communication system configured to form at least one communication path with a plurality of relay apparatuses between a user equipment and a donor apparatus. The communication control method includes: detecting, by a relay apparatus included in the plurality of relay apparatuses, a failure of a backhaul link between an upper apparatus higher than the relay apparatus and the relay apparatus; in response to the detecting of the failure in the backhaul link, transmitting, by the relay apparatus, a failure notification related to the failure of the backhaul link to a lower apparatus lower than the relay apparatus; and by the lower apparatus, in response to receiving the failure notification from the relay apparatus, stopping uplink transmission to the relay apparatus.
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公开(公告)号：US20220141834A1
公开(公告)日：2022-05-05
申请号：US17435673
申请日：2020-03-27
Applicant: Kyocera Corporation
Inventor： Henry CHANG , Masato FUJISHIRO
Abstract: The methods, devices, and systems discussed herein describe four different mechanisms (e.g., solutions) to assist a leader of a group of wireless communication devices in deciding when to switch between groupcast and unicast transmissions. In the first solution, the group leader may decide to initiate groupcast or unicast without considering the design of the Access Stratum (AS) layer link management. In the second solution, the group leader can determine whether to initiate unicast transmission based, at least partially, on feedback messages received from one or more other members of the group. In the third solution, the group leader has the option to simultaneously transmit groupcast and unicast transmissions towards the same user equipment devices (UEs). In the fourth solution, the group leader indicates to the groupcast-receiving UEs that the transmission is about to be switched from groupcast to unicast.
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公开(公告)号：US20220070926A1
公开(公告)日：2022-03-03
申请号：US17454436
申请日：2021-11-10
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO
Abstract: A communication control method is a method performed in a user equipment. The communication control method includes the steps of: when a random access procedure is performed for a base station operated in an unlicensed band in which LBT before transmission is required, transmitting a message to the base station and then receiving a response to the message from the base station; and controlling the number of transmission occasions that allow the message to be transmitted before the response is received. The controlling of the number of the transmission occasions includes, when a failure occurs in an n-th (n≥1) random access procedure due to a failure of the LBT, causing the number of the transmission occasions in an (n+1)-th random access procedure to be larger than the number of the transmission occasions in the n-th random access procedure.
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公开(公告)号：US20210352542A1
公开(公告)日：2021-11-11
申请号：US17277477
申请日：2019-09-10
Applicant: Kyocera Corporation
Inventor： Henry CHANG , Masato FUJISHIRO
IPC: H04W36/00
Abstract: Cell selection in a New Radio-Unlicensed Standalone (NR-U SA) communication system is managed by allowing UE devices to avoid measurements of frequencies that are occupied. A base station (gNB) may indicate to the UE device frequencies that can be skipped or may allow the UE device to skip frequencies for a temporary period after the frequencies have been determined to be occupied.
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公开(公告)号：US20210274565A1
公开(公告)日：2021-09-02
申请号：US17323333
申请日：2021-05-18
Applicant: Kyocera Corporation
Inventor： Henry CHANG , Masato FUJISHIRO
Abstract: An unmanned aerial vehicle (UAV) receives a set of Random Access preambles, determines its UAV status, and selects a Random Access preamble from the set of Random Access preambles. In some cases, the set of Random Access preambles are allocated for use by UAVs and are common to a plurality of neighboring cells. The UAV transmits the selected Random Access preamble to multiple neighboring cells. One of the neighboring cells that received the selected Random Access preamble transmits a Random Access Response to the UAV. The UAV determines which cell sent the Random Access Response, reselects to the cell that sent the Random Access Response, and transmits a Radio Resource Control (RRC) Connection Establishment Request to the reselected cell. Upon completion of a Random Access Channel (RACH) procedure, the reselected cell becomes the serving cell for the UAV.
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Patent Agency Ranking
公开(公告)号：US20210266865A1
公开(公告)日：2021-08-26
申请号：US17314914
申请日：2021-05-07
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO , Kugo MORITA , Henry CHANG
Abstract: A user equipment and apparatus receive from a base station, configuration information configuring the user equipment to provide assistance information indicating a preference of the user equipment to leave RRC connected state, and transmit to the base station, assistance information indicating that a preferred RRC state of the user equipment is an RRC state in which an RRC connection is suspended. A base station transmits to a user equipment, configuration information configuring the user equipment to provide assistance information indicating a preference of the user equipment to leave RRC connected state, and receives from the user equipment, assistance information indicating that a preferred RRC state of the user equipment is an RRC state in which an RRC connection is suspended.
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公开(公告)号：US20210160950A9
公开(公告)日：2021-05-27
申请号：US16186618
申请日：2018-11-12
Applicant: KYOCERA CORPORATION
Inventor： Masato FUJISHIRO , Noriyoshi FUKUTA , Henry CHANG
Abstract: A radio terminal according to an embodiment is used in a mobile communication system. The radio terminal includes a controller configured to, if the radio terminal is in an RRC connected state, perform a predetermined function according to configuration parameters configured from a network. The controller is configured to invalidate at least a part of the configuration parameters in response to the transition of the radio terminal from the RRC connected state to a specific state. The specific state is a state in which signaling is reduced as compared with the RRC connected state and context information of the radio terminal is maintained in the network.
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公开(公告)号：US20210092670A1
公开(公告)日：2021-03-25
申请号：US17114682
申请日：2020-12-08
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO
Abstract: A user equipment, apparatus and method receives a first system information block (SIB) that is broadcast from a first cell and includes information necessary for accessing the first cell, receives a second SIB other than the first SIB from the first cell in response to a request transmitted by the user equipment for the second SIB, receives and stores in memory area information from the first cell, the area information indicating a predetermined area comprising a plurality of cells including the first cell where the second SIB is applicable, and when the user equipment camps on a second cell, receives information from the second cell indicating an area that the second cell belongs to. A determination is made as to whether to transmit a request for the second SIB to the second cell at least based on the stored area information and the information received from the second cell.
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公开(公告)号：US20210076311A1
公开(公告)日：2021-03-11
申请号：US16952172
申请日：2020-11-19
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO , Amit KALHAN
Abstract: A mobile communication system comprises a radio base station configured to manage a cell having a first coverage and a second coverage which is a portion enhanced more than the first coverage; a radio relay node configured to receive, from the radio base station, a plurality of data having different destination radio terminals from each other, and transmit the plurality of data simultaneously to a plurality of radio terminals in the second coverage; and a radio terminal configured to be located in the second coverage, receive one or a plurality of control signals transmitted from the radio base station or the radio relay node. The radio terminal is configured to perform a process of receiving data addressed to own radio terminal from the radio relay node based on the one or the plurality of control signals.
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公开(公告)号：US20210058973A1
公开(公告)日：2021-02-25
申请号：US17091381
申请日：2020-11-06
Applicant: KYOCERA Corporation
Inventor： Masato FUJISHIRO , Henry CHANG
Abstract: A control method according to one embodiment is for controlling early data transmission configured to perform user data transmission during a random access procedure. The control method comprises: transmitting, by the user equipment to a base station during the random access procedure, a random access preamble configured for the early data transmission; and transmitting, by the user equipment to the base station during the random access procedure, a MSG 3 message including uplink user data. The MSG 3 message further includes a Medium Access Control (MAC) Control Element (CE) indicating that no downlink user data transmission is expected.
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