Interference cancellation method and apparatus between terminals in wireless access system supporting full-duplex radio scheme

    公开(公告)号:US10390254B2

    公开(公告)日:2019-08-20

    申请号:US15028255

    申请日:2014-10-10

    Abstract: The present invention relates to methods for interference cancellation between terminals in a full-duplex radio (FDR) system and apparatuses supporting the same. A method for cancelling interference between terminals in a wireless access system supporting a full-duplex radio (FDR) system, as an aspect of the present invention, may comprise the steps of: receiving, by a first terminal, reference signal information including information for configuring an interference reference signal from a base station; receiving the interference reference signal from a second terminal; obtaining, by the first terminal, interference channel information with regard to an interference channel between the first terminal and the second terminal on the basis of the interference reference signal; and transmitting by beamforming uplink data to the base station on the basis of the interference channel information by the first terminal. In this case, the first terminal is supported by the FDR system and the second terminal supports the half-duplex radio (HDR) system, and a resource area transmitting uplink data by the first terminal can be configured to match a resource area receiving downlink data by the second terminal.

    Method and apparatus for reporting channel status information in wireless communication system

    公开(公告)号:US10341001B2

    公开(公告)日:2019-07-02

    申请号:US15661949

    申请日:2017-07-27

    Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for reporting channel status information (CSI). Particularly, the method by which a terminal in the wireless communication system reports the CSI, comprises the steps of: receiving a reference signal from a base station; and reporting, to the base station, the CSI generated by using the reference signal, wherein the CSI includes channel information for a plurality of antenna ports mapped according to a first parameter, and the first parameter is a value related to vertical domain antenna ports indicated through upper layer signaling.

    Method for transmitting signals in DCM mode in wireless LAN system, and device for same

    公开(公告)号:US10333751B2

    公开(公告)日:2019-06-25

    申请号:US15751447

    申请日:2016-08-09

    Abstract: Disclosed according to one embodiment of the present invention is a method whereby a first station (STA) transmits signals using dual carrier modulation (DCM) in a wireless LAN system, comprising: modulating HE-SIG B field information and/or data field information on a wireless frame transmitted by the first STA and transmitting same to a second STA, wherein in the case of modulating the HE-SIG B field information and/or the data field information in a BPSK mode, if a random symbol C1 among symbols modulated in the BPSK mode is mapped to a subcarrier K, a symbol formed by rotating the phase of the symbol C1 is mapped to a subcarrier K+N/2 in a repeating manner, wherein N corresponds to the number of subcarriers of a resource unit for transmitting the HE-SIG B field information and the data field information and K is a random integer equal to or less than N/2.

    METHOD AND APPARATUS FOR PROVIDING WFD SERVICE ON BASIS OF 60GHz FREQUENCY IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190075607A1

    公开(公告)日:2019-03-07

    申请号:US15898349

    申请日:2018-02-16

    Abstract: A method for performing 60 GHz WFD (Wi-Fi Display) connection by a first terminal in a wireless communication system is disclosed. The method includes transmitting, by the first terminal, a message requesting 60 GHz WFD connection to a second terminal through an access point (AP); and receiving a message accepting 60 GHz WFD connection from the second terminal through the access point (AP). The 60 GHz WFD connection request message includes capability information indicating whether the first terminal supports 60 GHz. The 60 GHz WFD connection accept message includes capability information indicating whether the second terminal supports operation at 60 GHz. The messages are exchanged with each other on the basis of at least one of 2.4 GHz and 5 GHz.

    Method for obtaining synchronization between devices in wireless access system supporting device-to-device communication, and device supporting same

    公开(公告)号:US10225811B2

    公开(公告)日:2019-03-05

    申请号:US14764111

    申请日:2014-01-28

    Abstract: The present invention, which is used in a wireless access system supporting device-to-device (D2D) communication, defines a new random access channel region and provides methods for obtaining synchronization between D2D devices in the new random access channel region, and devices supporting same. The method for obtaining synchronization between devices in a wireless access system supporting device-to-device (D2D) communication, according to one embodiment of the present invention, may comprise: a step in which a first terminal receives a D2D preamble from a second terminal via a D2D random access channel (RACH) region in an RACH region; a step in which the first terminal obtains synchronization with the second terminal by using the D2D preamble; and a step in which the first terminal performs D2D communication with the second terminal. The RACH region may comprise a legacy RACH region to which a legacy preamble for performing an RACH procedure with a base station is transmitted, and the D2D RACH region.

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