METHOD AND APPARATUS FOR TRANSMITTING SIGNALS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200044812A1

    公开(公告)日:2020-02-06

    申请号:US16597728

    申请日:2019-10-09

    Abstract: The present invention relates to a wireless communication system. Specifically, the present invention relates to a method for transmitting, by a terminal, a HARQ-ACK in a CA wireless communication system and an apparatus therefor, the method comprising: receiving at SF # n−k one or more DG DCIS containing a first DAL receiving a UG DCI which schedules a PUSCH; and transmitting at SF # n a HARQ-ACK payload over the PUSCH, wherein the size of the HARQ-ACK payload is determined on the basis of a value of the first DAI, the value of the first DAI corresponds to the total number of cells on which a first type of DL signal is scheduled at the SF # n−k with respect to the terminal, n is an integer of 0 or more and k is a positive integer.

    COMMUNICATION METHOD IN UNLICENSED BAND AND DEVICE USING SAME

    公开(公告)号:US20190342919A1

    公开(公告)日:2019-11-07

    申请号:US16512167

    申请日:2019-07-15

    Inventor: Joonkui AHN

    Abstract: Provided are a communication method in an unlicensed band and a device using same. If the device succeeds in clear channel assessment (CCA) during a reservation time in an unlicensed band, the device transmits a reservation signal and detects reservation signals received from other wireless devices during the reservation time. According to the detection results, the device determines whether to transmit data during a data time corresponding to the reservation time.

    METHOD FOR TRANSMITTING ACK/NACK IN WIRELESS COMMUNICATION SYSTEM AND DEVICE USING SAME

    公开(公告)号:US20190268123A1

    公开(公告)日:2019-08-29

    申请号:US16408233

    申请日:2019-05-09

    Abstract: A method for transmitting a positive-acknowledgement/negative-acknowledgement (ACK/NACK) in a wireless communication system, performed by a wireless device, includes receiving a plurality of downlink (DL) grants on a plurality of serving cells, each DL grant including a counter downlink assignment index (DAI) and an ACK/NACK resource indicator (ARI), the counter DAI indicating an accumulative number of PDSCHs received by the wireless device for a corresponding DL grant, receiving a plurality of physical downlink shared channels (PDSCHs) associated with the plurality of DL grants, selecting one of a plurality of sets of PUCCH resources based on a payload size of uplink control information (UCI), the UCI including ACK/NACK bits for the plurality of PDSCHs, determining a PUCCH resource within the selected set of PUCCH resources based on an ARI included in the most recently received DL grant among the plurality of DL grants and transmitting the UCI by using a PUCCH format associated with the determined PUCCH resource.

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