METHOD FOR PERFORMING HARQ OPERATION IN NOMA-BASED SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20190356423A1

    公开(公告)日:2019-11-21

    申请号:US16475776

    申请日:2017-01-04

    Abstract: A method in which a terminal performs a HARQ operation in a NoMA-based system comprises a step of receiving a downlink control information (dci) format comprising a multiple access (MA) signature field for supporting NoMA transmission; a step of receiving downlink data based on a value of the MA signature indicated by the MA signature field; and a step of transmitting an ACK/NACK signal with respect to the downlink data based on a subframe offset value, a frequency offset value, or a sequence index value, which are tied with the indicated value of the MA signature according to a predefined rule, wherein the subframe offset value comprises the subframe offset value between a reception subframe of the downlink data and a downlink HARQ feedback transmission subframe with respect to the downlink data, and wherein the frequency offset value indicates a frequency band used for transmitting the ACK/NACK signal.

    METHOD FOR TRANSMITTING SR IN WIRELESS COMMUNICATION SYSTEM AND TERMINAL THEREFOR

    公开(公告)号:US20190281619A1

    公开(公告)日:2019-09-12

    申请号:US16345017

    申请日:2017-01-31

    Abstract: A method by which a terminal transmits a scheduling request (SR) in a wireless communication system, according to the present invention, comprises the steps of: receiving information on periodicity of SR transmission and a resource region for periodical SR transmission; receiving downlink control information (DCI) which includes a field related to an SR transmission region in a first subframe; and confirming whether the resource for the SR transmission of the terminal is allocated in the first subframe, even if the first subframe is not the subframe for the periodical SR transmission of the terminal, according to the periodicity of the SR transmission, when a SR field indicates a specific value.

    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 device for transmitting control information to be used in terminal

    公开(公告)号:US10320542B2

    公开(公告)日:2019-06-11

    申请号:US15573072

    申请日:2015-10-30

    Abstract: A method and a device for transmitting control information to be used in a terminal are provided. Specifically, an asynchronous level of a terminal supporting an asynchronous transmission mode is measured by using a signal received from the terminal. It is determined whether a measured value of the asynchronous level exceeds a threshold value, and if the asynchronous level is exceeded, a filter length and a CP length, which are to be used in the terminal, are changed. Information on the changed filter length and CP length is transmitted to the terminal. A sum of the filter length and the CP length is fixed, a characteristic of out-of-band emission improves when the filter becomes long in length, and interference occurring due to a multi-path delay can be prevented when the CP length becomes long.

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