METHOD AND DEVICE FOR TRANSMITTING OFDM SIGNAL, AND METHOD AND DEVICE FOR RECEIVING OFDM SIGNAL

    公开(公告)号:US20210007083A1

    公开(公告)日:2021-01-07

    申请号:US16964287

    申请日:2018-12-04

    Abstract: A method of transmitting, by a transmitting device, an orthogonal frequency division multiplexing (OFDM) signal in a wireless communication system, the method including: generating, by a digital module of the transmitting device, a frequency-shifted OFDM baseband signal by performing frequency up-shift of a first signal by a difference between a carrier frequency and a first frequency , wherein the first frequency is, among frequencies corresponding to integer multiples of 128Δ; closest to the carrier frequency , and wherein Δ is an OFDM subcarrier spacing; up-converting, by an analog oscillator of the transmitting device, the frequency-shifted OFDM baseband signal by the first frequency to generate an OFDM symbol signal at the carrier frequency fo; and transmitting the OFDM symbol signal at the carrier frequency .

    METHOD FOR TRANSMITTING AND RECEIVING SYNCHRONIZATION SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR METHOD

    公开(公告)号:US20200275393A1

    公开(公告)日:2020-08-27

    申请号:US16064244

    申请日:2017-09-28

    Abstract: Disclosed are a method for transmitting and receiving a synchronization signal in a wireless communication system and an apparatus therefor. Specifically, a method for performing synchronization signal by transmitting and receiving a synchronization signal includes: receiving, from a base station, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS); and performing synchronization by using the received PSS and the received SSS, in which a sequence for the SSS may be generated by a product between a first sequence and a second sequence and the number of first sequences may be configured to be larger than the number of second sequences.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200266870A1

    公开(公告)日:2020-08-20

    申请号:US16652022

    申请日:2018-10-01

    Abstract: Disclosed are a method and an apparatus for transmitting and receiving signals in a wireless communication system, the method comprising the steps of: measuring signal quality on the basis of a first beam set including a plurality of receiving beams; configuring a second beam set, on the basis of the first beam set, including a smaller number of receiving beams than the first beam set; measuring the signal quality on the basis of the second beam set; determining a reference value for the signal quality on the basis of the quality values measured on the basis of the second beam set; and, when the reference value is equal to or greater than the threshold value, transmitting information on the reference value to a base station, wherein the threshold value is determined on the basis of the maximum value from among the quality values measured on the basis of the first beam set, and a previously configured margin value.

    MEASUREMENT PERFORMING METHOD AND USER EQUIPMENT

    公开(公告)号:US20200022010A1

    公开(公告)日:2020-01-16

    申请号:US16484013

    申请日:2018-02-06

    Abstract: User equipment can be configured to perform a channel state information reference signal (CSI-RS)-based radio resource management (RRM) measurement. The user equipment receives CSI-RS configuration information, and receives a CSI-RS of a cell on the basis of the CSI-RS configuration information so as to perform a CSI-RS-based RRM measurement. The CSI-RS configuration information includes an SS block index for indicating an SS block associated with the CSI-RS, and the user equipment receives the CSI-RS on the basis of the SS block index.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190386797A1

    公开(公告)日:2019-12-19

    申请号:US16065429

    申请日:2017-06-15

    Abstract: The present invention relates to a wireless communication system, more specifically, to a method and an apparatus therefor, the method comprising the steps of: merging a first cell having a first TTI and a second cell having a second TTI, the length of the second TTI being N (N>1) times the length of the first TTI; receiving data scheduling information for the second cell in the first TTI of the first cell; and establishing data communication on the basis of the data scheduling information in the second TTI of the second cell corresponding to the first TTI of the first cell, wherein the first TTI for the first cell is any one TTI from among the N number of TTIs of the first cell corresponding to the second TTI of the second cell.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING RANDOM ACCESS CHANNEL

    公开(公告)号:US20190274172A1

    公开(公告)日:2019-09-05

    申请号:US16418174

    申请日:2019-05-21

    Abstract: The present invention provides a method for transmitting a random access channel (RACH). Particularly, the method includes receiving PRACH configuration information including information about a slot (RACH slot) available for transmission of the RACH and information indicating a subcarrier spacing for a PRACH, and transmitting a RACH preamble in the RACH slot on the basis of the PRACH configuration information and the subcarrier spacing, wherein the length of the RACH slot depends on the subcarrier spacing.

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