Method and device for transmitting downlink signal in wireless communication system

    公开(公告)号:US10555309B2

    公开(公告)日:2020-02-04

    申请号:US15326221

    申请日:2015-07-17

    Abstract: An embodiment of the present invention relates to a method by which a base station transmits a downlink signal in wireless communication system, the method including the steps of: transmitting a demodulation-reference signal (DMRS) approval; determining a long-term channel property from the DMRS of a first slot of an uplink sub-frame received by responding to the DMRS approval; receiving a first reference signal from a second slot of the sub-frame on the basis of the determined long-term channel property; determining a short-term channel property from the first reference signal; determining a pre-coding matrix from the long-term channel property and the short-term channel property; and transmitting a downlink signal through the determined pre-coding matrix.

    Method and apparatus for transmitting signal in a wireless communication system

    公开(公告)号:US10523267B2

    公开(公告)日:2019-12-31

    申请号:US15326323

    申请日:2015-07-28

    Abstract: A method for transmitting a signal by a Device-to-Device (D2D) User Equipment (UE) is disclosed. The method includes mapping a block of complex-valued symbols to Physical Resource Blocks (PRBs), and generating and transmitting a Single Carrier Frequency Division Multiple Access (SC-FDMA) signal after the mapping. If frequency hopping is used during the mapping, a lowest PRB index of the PRBs is changed between a first PRB index and a second PRB index according to a change in a transmission number for a transport block. If the block of complex-valued symbols is a D2D communication signal, the transmission number for the transport block is replaced with a subframe index of a D2D resource pool.

    Method for executing RSTD measurement-related operation in wireless communication system

    公开(公告)号:US10470147B2

    公开(公告)日:2019-11-05

    申请号:US15562272

    申请日:2016-04-01

    Abstract: An embodiment of the present invention relates to a method for executing a reference signal time difference measurement (RSTD) measurement-related operation by a terminal in a wireless communication system, which is a measurement-related operation executing method comprising the steps of: receiving RSTD measurement information from two or more helper UEs (H-UEs); using the received RSTD measurement information to correct the RSTD measurement information measured by the terminal; and transmitting the corrected RSTD measurement information to a base station.

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