Method for transmitting synchronization signal using codebook in wireless communication system

    公开(公告)号:US10701649B2

    公开(公告)日:2020-06-30

    申请号:US15773423

    申请日:2016-10-06

    Abstract: Disclosed are a method for transmitting a synchronization signal and a base station therefor, the method comprising: generating a codebook including a second precoder defined by concatenation of first precoders, which corresponds to a plurality of antenna subarrays, respectively; generating a synchronization sequence by multiplying, by a weight, the same reference sequence input over a plurality of time intervals, for each antenna subarray; and repeatedly transmitting a synchronization signal generated by applying the second precoder to the generated synchronization sequence, through the plurality of antenna subarrays, wherein the reference sequence is different for each of the plurality of antenna subarrays, and a combination of the reference sequence and the weight indicates additional information transmitted to a terminal.

    Method for feeding back CSI information in wireless communication system and device therefor

    公开(公告)号:US10659126B2

    公开(公告)日:2020-05-19

    申请号:US15558150

    申请日:2015-07-27

    Abstract: A method and device for feeding back channel state information (CSI) by a user equipment (UE) in a wireless communication system applied three-dimensional (3D) beamforming. The method includes: receiving a pilot signal (reference signal) from a base station; configuring a CSI transmission mode in one of a first transmission mode and a second transmission mode based on motion information of the UE; and feeding back the CSI based on the configured CSI transmission mode. The first transmission mode transmits the CSI including precoding matrix index (PMI) information for one of vertical beamforming or horizontal beamforming. The second transmission mode transmits the CSI including PMI information for both vertical beamforming and horizontal beamforming.

    Method for transmitting and receiving signal using beam sharing between user equipments

    公开(公告)号:US10560167B2

    公开(公告)日:2020-02-11

    申请号:US15748408

    申请日:2016-06-27

    Abstract: The present invention relates to a method for receiving a signal in a wireless communication system, and an apparatus therefore. Particularly, the present invention relates to a method and an apparatus therefore, the method comprising the steps: receiving information associated with a preferred beam from another user equipment (UE), wherein the information associated with the preferred beam includes information indicating at least one preferred beam for said another UE; determining at least one shared beam on the basis of the received information associated with the preferred beam; transmitting, to a base station, information associated with the at least one determined shared beam; determining a beam dedicated for a particular UE on the basis of the at least one determined shared beam; transmitting, to the base station, information associated with the determined dedicated beam; and simultaneously receiving, from the base station, UE-common data on the basis of the information associated with the at least one shared beam, and UE-specific data on the basis of the information associated with the dedicated beam.

    Method for transmitting and receiving synchronization signal in wireless communication system

    公开(公告)号:US10524218B2

    公开(公告)日:2019-12-31

    申请号:US15567007

    申请日:2016-01-20

    Abstract: Disclosed are a method and a terminal for receiving a synchronization signal configured to: obtain information on a plurality of base station types in which a plurality of base stations are classified according to predetermined parameters; receive a synchronization signal from a base station of a cell where the terminal is positioned; estimate the number of repetitions of the synchronization signal and a band to which a sequence number of the synchronization signal belongs: select, using the estimation results, the base station type of a base station from which the synchronization signal was transmitted, from among the plurality of base station types; and perform a beam scanning process by considering the selected base station type.

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