METHOD AND DEVICE FOR PERFORMING CELL RESELECTION IN MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20210037595A1

    公开(公告)日:2021-02-04

    申请号:US16966689

    申请日:2019-02-13

    Abstract: An operating method of a user equipment in a wireless communication system according to an embodiment of the present disclosure includes receiving a packet duplication configuration and a logical channel restriction configuration (allowedServingCells) for a data radio bearer (DRB) from a base station through an RRC message; receiving an indication to deactivate packet duplication for the DRB, for which packet duplication is configured, from the base station through a media access control (MAC) control element (CE); and not applying the logical channel restriction configuration for the DRB, for which packet duplication is configured, based on the indication to deactivate the packet duplication.

    METHOD AND APPARATUS FOR RECONFIGURING A BEARER

    公开(公告)号:US20210029771A1

    公开(公告)日:2021-01-28

    申请号:US17065725

    申请日:2020-10-08

    Abstract: A data transmission method of a User Equipment, UE, in a Long Term Evolution, LTE, compliant mobile communications network, and a corresponding UE. The method comprises detecting reconfiguration of a bearer from a split bearer in which uplink Packet Data Convergence Protocol, PDCP, Protocol Data Units, PDUs, are transmitted to both a Master eNB, MeNB, and to a Secondary eNB, SeNB, to a non-split bearer in which uplink PDCP PDUs are transmitted only to the MeNB. If reconfiguration of a bearer from a split bearer to a non-split bearer in which uplink PDCP PDUs are transmitted to the MeNB is detected, the method further comprises initiating retransmission of PDCP PDUs from the first PDCP PDU for which transmission was attempted via the SeNB and for which there has been no confirmation of successful delivery by a protocol layer below the PDCP layer within the UE. The method further comprises retransmitting only PDCP PDUs for which transmission of the PDU was attempted via the SeNB.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING BEAM FAILURE RECOVERY REQUEST FOR SECONDARY CELL

    公开(公告)号:US20210013948A1

    公开(公告)日:2021-01-14

    申请号:US16925223

    申请日:2020-07-09

    Abstract: A communication method and system for converging a 5th generation (5G) communication system for supporting higher data rates beyond a 4th generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology. A method performed by a terminal for beam failure recovery (BFR) on a secondary cell (SCell) in a wireless communication system comprises receiving information for BFR on an SCell including a scheduling request configuration for the BFR on the SCell; detecting beam failure on the SCell based on whether a number of beam failure instances within a preconfigured time duration exceeds a preconfigured number; and, as a response to detecting the beam failure on the SCell, transmitting a scheduling request for the BFR on the SCell based on the scheduling request configuration.

    METHOD AND APPARATUS FOR PERFORMING RADIO LINK FAILURE REPORTING IN NEXT-GENERATION MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20200351731A1

    公开(公告)日:2020-11-05

    申请号:US16863863

    申请日:2020-04-30

    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method performed by a terminal comprises detecting a radio link failure (RLF) and starting a first timer; entering an IDLE state in case that the terminal does not find a suitable cell connectable with the terminal before the first timer expires; and transmitting, to a cell in which the terminal is able to transit from the IDLE state to a connected-mode state, an RLF report message including information associated with the suitable cell.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL BY USING MULTIPLE BEAMS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200314818A1

    公开(公告)日:2020-10-01

    申请号:US16833293

    申请日:2020-03-27

    Abstract: A method performed by a user equipment (UE) in a wireless communication system includes receiving, from a base station (BS), physical downlink shared channel (PDSCH) configuration information including a list of transmission configuration indicator (TCI) states, receiving, from the BS, a PDSCH media access control element (MAC CE) including information indicating activation of at least one TCI state in the list, identifying whether the PDSCH MAC CE is a MAC CE capable of indicating two or more TCI states for one TCI codepoint, receiving, from the BS, downlink control information (DCI) including information indicating a TCI codepoint, and receiving, from the BS, data via a PDSCH based on the information indicating activation of the at least one TCI state, a result of the identifying, and the information indicating the TCI codepoint.

    METHOD AND APPARATUS FOR HANDOVER WITHOUT INTERRUPTION OF TRANSMISSION AND RECEPTION OF DATA IN NEXT-GENERATION MOBILE COMMUNICATION SYSTEM

    公开(公告)号:US20200314717A1

    公开(公告)日:2020-10-01

    申请号:US16834922

    申请日:2020-03-30

    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a terminal in a wireless communication system according to the disclosure includes receiving, from a first base station, a message including a command of handover from a first base station to a second base station through radio resource control (RRC) signaling; identifying the message includes information indicating dual protocol stack handover; and receiving, from the first base station, data until a cell of the first base station is released in case that the message includes information indicating dual protocol stack handover.

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