METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190261441A1

    公开(公告)日:2019-08-22

    申请号:US16400770

    申请日:2019-05-01

    Abstract: A method for transmitting a signal by a Device-to-Device (D2D) User Equipment (UE) in a wireless communication system is disclosed. The method includes determining a resource pool for a D2D control signal, determining a resource pool for a D2D communication signal based on the resource pool for a D2D control signal, and transmitting a D2D communication signal using the resource pool for a D2D communication signal. Subframes of the resource pool for a D2D communication signal were reindexed, starting from a first subframe following a last subframe of the resource pool for a D2D control signal.

    UPLINK MULTI-ANTENNA TRANSMISSION METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20190181934A1

    公开(公告)日:2019-06-13

    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.

    METHOD FOR CHANGING SERVING CELL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20190174384A1

    公开(公告)日:2019-06-06

    申请号:US16324845

    申请日:2017-08-14

    Abstract: Disclosed are a method for changing a serving cell in a wireless communication system and an apparatus therefor. Specifically, the method performed by a UE may include: transmitting, to a serving cell, a measurement report for signals received from the serving cell and one or more cells; when a measurement value for a signal received from at least one cell among the one or more cells satisfies a predetermined specific triggering condition, receiving, from the serving cell, information representing that the at least one cell corresponds to a candidate cell for changing the serving cell; and performing synchronization for at least one of a downlink or an uplink with the at least one cell, by transmitting a specific uplink signal to the at least one cell.

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