Method and device for transmitting feedback information in wireless communication system

    公开(公告)号:US11159276B2

    公开(公告)日:2021-10-26

    申请号:US16606522

    申请日:2018-04-19

    Abstract: Provided according to an embodiment is a method for transmitting feedback information in a wireless network supporting a downlink and a sidelink. Specifically, the method comprises the steps of: receiving, by a remote terminal, downlink data from a base station through the downlink; and transmitting, by the remote terminal, feedback information associated with the downlink data to a relay terminal through the sidelink. The downlink data may be received by the remote terminal through at least one of downlink subframes preceding an (n-k)th subframe, where n and k each denote an arbitrary positive integer. The feedback information associated with the downlink data may be generated by the remote terminal in the (n-k)th subframe. The feedback information associated with the downlink data may be transmitted to the relay terminal by the remote terminal in an nth subframe.

    Method and apparatus for controlling SRB

    公开(公告)号:US11076442B2

    公开(公告)日:2021-07-27

    申请号:US16333418

    申请日:2017-09-25

    Abstract: Provided are a method for a terminal controlling a signaling radio bearer (SRB) in a wireless communication system and an apparatus supporting same. The method comprises the steps of: establishing a radio resource control (RRC) connection with a first base station and setting a first SRB; setting a second base station and a second SRB, wherein the second SRB is temporarily suspended; and resuming the temporarily suspended second SRB when the quality of a cell in the first base station is worse than a first critical value.

    Method and device for applying value on basis of coverage extension level

    公开(公告)号:US11051178B2

    公开(公告)日:2021-06-29

    申请号:US16717152

    申请日:2019-12-17

    Abstract: A method performed by a wireless device in a wireless communication system includes receiving multiple thresholds from a base station (BS); measuring a quality of a cell; determining a coverage enhancement (CE) level of the wireless device based on the multiple thresholds and the measured quality of the cell; receiving random access channel (RACH) information including at least one window size value and at least one timer value for contention resolution, from the BS; selecting a window size value and a timer value among the RACH information based on the determined CE level; transmitting a first message for the RACH to the BS; receiving a second message for the RACH based on the selected window size value, from the BS; and starting a timer for contention resolution based on the selected timer value regarding a third message for the RACH. Further, the CE level is determined as a CE level 0, when the measured quality is above or equal to all of the multiple thresholds.

    Method for performing V2X communication in wireless communication system and apparatus for same

    公开(公告)号:US11026070B2

    公开(公告)日:2021-06-01

    申请号:US16736697

    申请日:2020-01-07

    Abstract: Disclosed are a method for performing V2X communication in a wireless communication system and an apparatus for the same. Specifically, a method for performing vehicle-to-everything (V2X) communication by a user equipment (UE) in a wireless communication system includes: receiving a transmission request of a V2X message of a V2X service identified by a V2X service identifier from an upper layer by using V2X communication through a PC5 interface, the transmission request including the V2X message and the V2X service identifier; requesting or selecting a resource for the V2X communication through the PC5 interface to a base station based on whether the UE is serviced by an evolved universal terrestrial radio access network (E-UTRAN) for the V2X communication; and transmitting the V2X message through the PC5 interface by transferring the V2X message to a lower layer, and when mapping between the V2X service identifier and a transmission parameter is configured, the transmission parameter associated with the V2X service identifier may be transferred to the lower layer together with the V2X message.

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