METHOD FOR HANDLING PRE-CONFIGURED UL RESOURCES BASED ON LBT PROCEDURE IN WIRELESS COMMUNICATION SYSTEM AND A DEVICE THEREFOR

    公开(公告)号:US20210112592A1

    公开(公告)日:2021-04-15

    申请号:US16633697

    申请日:2018-08-07

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling pre-configured UL resources based on LBT procedure in wireless communication system, the method comprising: receiving information for UL resource configuration from a network, in a state that the UE is configured with at least one serving cell operating in an unlicensed spectrum; performing LBT operation for transmission of uplink data by using the UL resource, wherein the UE starts counting a number of failures of the LBT operation once the UE is not allowed to use the UL resource for transmission of uplink data during the LBT operation, and when the number of failures of the LBT operation reaches to the maximum number of LBT failure, stopping using the UL resource.

    METHOD AND APPARATUS FOR PERFORMING RETRANSMISSION OF UPLINK DATA IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200351036A1

    公开(公告)日:2020-11-05

    申请号:US16861998

    申请日:2020-04-29

    Abstract: The present invention relates to a method of transmitting uplink (UL) data by a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: upon transmitting the UL data based on a configured grant (CG) configuration related to a Hybrid-ARQ (HARQ) process, starting a first timer related to the HARQ process and a second timer related to the HARQ process; and performing retransmission of the UL data based on the HARQ process, wherein an UL resource on which the retransmission is performed is determined based on whether a UL resource of the CG configuration is configured or not between an expiration time point of the first timer and an expiration time point of the second timer.

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