Measurement performing method and user equipment

    公开(公告)号:US11122454B2

    公开(公告)日:2021-09-14

    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 of transmitting and receiving physical random access channel and device therefor

    公开(公告)号:US11116014B2

    公开(公告)日:2021-09-07

    申请号:US16797170

    申请日:2020-02-21

    Abstract: The present invention discloses a method of transmitting a Physical Random Access Channel (PRACH) by a terminal in a wireless communication system. Specifically, the method includes: receiving first information related to a Synchronization Signal Block (SSB) and second information related to PRACH resources; and transmitting the PRACH on a valid PRACH resource among the PRACH resources based on the first and second information. In this case, valid PRACH resource may be a PRACH resource allocated after symbols in which the SSB is received among the PRACH resources included in a PRACH slot related to the second information.

    Method and apparatus for transmitting and receiving reference signal in wireless communication system

    公开(公告)号:US11057177B2

    公开(公告)日:2021-07-06

    申请号:US16499740

    申请日:2018-03-30

    Abstract: Disclosed herein are a method and apparatus for performing, by UE, decoding in a wireless communication system. According to the present invention, there may be a method and an apparatus for decoding data in which a demodulation reference signal (DMRS) configured by a base station according to a specific pattern is received from the base station through a DMRS symbol, the demodulation reference signal is transmitted on a specific antenna port and located on the same one or two time-axis symbols as at least one other demodulation reference signal transmitted on another antenna port, the specific pattern is determined according to characteristics of a frequency band in which the demodulation reference signal is transmitted, the demodulation reference signal is mapped to the one or two time-axis symbols using at least one of a first code division multiplexing (CDM) on a frequency axis or a second CDM on a time axis, and the data are decoded using the demodulation reference signal.

    Method and device for transmitting OFDM signal, and method and device for receiving OFDM signal

    公开(公告)号:US10999821B2

    公开(公告)日:2021-05-04

    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 0 and a first frequency base, wherein the first frequency fbase is, among frequencies corresponding to integer multiples of 128Δ; closest to the carrier frequency 0, 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 base to generate an OFDM symbol signal at the carrier frequency fo; and transmitting the OFDM symbol signal at the carrier frequency 0.

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