Uplink multi-antenna transmission method in wireless communication system and apparatus therefor

    公开(公告)号:US10763930B2

    公开(公告)日:2020-09-01

    申请号:US16279544

    申请日:2019-02-19

    Abstract: Disclosed in the present application is a method for transmitting, by a terminal, an uplink signal to a base station through a plurality of antenna ports in a wireless communication system. Specifically, the method comprises the steps of: transmitting, to the base station, uplink reference signals corresponding to the plurality of antenna ports and antenna port grouping information: receiving, from the base station, information on an uplink precoder, which is determined on the basis of the uplink reference signals and the antenna port group information; precoding the uplink signal using the information on the uplink precoder; and transmitting the precoded uplink signal to the base station, wherein the antenna port grouping information comprises information on antenna port groups comprising the plurality of antenna ports and information of the signal distortion level between the antenna port groups.

    Error recovery method and device for same using multichannel in wireless communication system

    公开(公告)号:US10721024B2

    公开(公告)日:2020-07-21

    申请号:US16067794

    申请日:2017-01-06

    Inventor: Hanbyul Seo

    Abstract: In the present application, a method is disclosed for receiving data from a base station by means of a terminal in a wireless communication system. In particular, the method comprises the steps of: receiving the data from the base station through a multicast channel; when decoding of the data is unsuccessful, transmitting a retransmission request signal for the data to the base station; and receiving a retransmission of the data from the base station through a unicast channel, wherein the data received through the multicast channel and the data received through the unicast channel are characterized by including the same transport block having mutually different and dissimilar RVs (Redundancy Versions).

    Method and apparatus for transmitting control information in wireless communication system

    公开(公告)号:US10694513B2

    公开(公告)日:2020-06-23

    申请号:US16258093

    申请日:2019-01-25

    Abstract: A method for enabling a base station to transmit control information in a wireless communication system according to one embodiment of the present invention, comprises a step of transmitting an enhanced physical downlink channel (E-PDCCH) for a terminal using at least one physical resource block pair among a plurality of physical resource block pairs for transmitting the E-PDCCH, wherein the plurality of physical resource block pairs include one or more physical resource block pair sets, and a parameter related to a demodulation reference signal for the E-PDCCH is set with respect to each physical resource block pair set.

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