Method and device for performing synchronization by D2D terminal in wireless communication system

    公开(公告)号:US11063679B2

    公开(公告)日:2021-07-13

    申请号:US16070145

    申请日:2017-01-13

    Abstract: Disclosed is a method for performing a synchronization by a device-to-device (D2D) terminal in a wireless communication system supporting D2D communication. More particularly, a method for performing a synchronization by a D2D terminal comprises the steps of: receiving a synchronization reference signal from a first synchronization source and performing a synchronization; and, if the quality of the synchronization reference signal does not meet a predetermined standard, changing the synchronization source into a second synchronization source.

    Method and device for measuring distance in wireless communication system

    公开(公告)号:US11061128B2

    公开(公告)日:2021-07-13

    申请号:US16495240

    申请日:2018-03-22

    Abstract: According to one embodiment, a distance technique between a transmitter and a receiver for processing a signal in symbol units is presented. According to the embodiment, the transmitter transmits a transmission signal to the receiver through preset first and second frequencies. Then, the transmitter receives, from the receiver, a reception signal corresponding to the transmission signal. The reception signal includes a first reception component corresponding to the first frequency and a second reception component corresponding to the second frequency. The phase difference set by the receiver is applied between the phase of the first reception component and the phase of the second reception component. The phase difference is set on the basis of the difference between a reception time at which the transmission signal is received by the receiver and a processing time at which the transmission signal is processed in the receiver.

    Method and device for performing relay D2D communication in wireless communication system

    公开(公告)号:US11025334B2

    公开(公告)日:2021-06-01

    申请号:US16479408

    申请日:2018-01-22

    Inventor: Hyukjin Chae

    Abstract: Disclosed according to various embodiments of the present invention are a method and a device for preforming device-to-device (D2D) relay communication. Disclosed are a method and a device for performing device-to-device (D2D) relay communication, the method comprising the steps of: receiving, from second UE, a signal including relay request information; transmitting a response signal to the second UE if destination UE corresponding to destination UE ID included in the relay request information has been found; and transmitting a relay signal to the destination UE.

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