Method for reporting aperiodic channel state information in wireless communication system and apparatus therefor

    公开(公告)号:US11382111B2

    公开(公告)日:2022-07-05

    申请号:US16763548

    申请日:2018-11-13

    Abstract: The present specification provides a method for reporting aperiodic channel state information (ACSI) in a wireless communication system. More specifically, the method, which is performed by a terminal, comprises the steps of: receiving, from a base station, downlink control information (DCI) including a reporting trigger for each of first ACSI and second ACSI and a reporting timing for each of the first ACSI and the second ACSI; and transmitting low-priority ACSI, which is determined among the first ACSI and the second ACSI on the basis of a predetermined rule, to the base station at a reporting time point determined on the basis of a delayed reporting timing.

    Method for measuring and reporting channel state information in wireless communication system and device for same

    公开(公告)号:US11121754B2

    公开(公告)日:2021-09-14

    申请号:US16613408

    申请日:2018-05-14

    Abstract: The present specification provides a method for measuring and reporting channel state information (CSI) in a wireless communication system and a device for same. More particularly, in a method for reporting channel state information in a wireless communication system, the method which is carried out by means of a base station can comprise the steps of: transmitting CSI report configuration information associated with a CSI report to a terminal, wherein the CSI report configuration information comprises information indicating a time offset for the CSI report; transmitting a channel state information reference signal (CSI-RS) to the terminal; transmitting control information, which is for triggering the CSI report, to the terminal; and receiving from the terminal the CSI report which is generated on the basis of the measurement with respect to the CSI-RS. Here, if the information indicating the time offset for the CSI report is configured in “0” value, the CSI-RS can be transmitted periodically or semi-continuously.

    Method for reporting channel state by using aperiodic channel state information-reference signal, and device therefor

    公开(公告)号:US11075678B2

    公开(公告)日:2021-07-27

    申请号:US16089884

    申请日:2017-03-23

    Abstract: The present invention relates to a method for receiving a downlink signal in a wireless communication system. The method, according to one embodiment of the present invention, is performed by a terminal and may comprise the steps of: receiving control information indicating an aperiodic channel state information-reference signal (CSI-RS) resource masked with an identifier associated with an aperiodic CSI-RS; if the control information does not indicate an aperiodic CSI-RS resource for each terminal in a cell, determining that the aperiodic CSI-RS resource indicated by the control information is a resource element (RE) puncturing pattern for a downlink data channel or an improved downlink control channel; and decoding the downlink data channel or the improved downlink control channel by using the RE puncturing pattern.

    Method for channel and interference measurement in wireless communication system and apparatus therefor

    公开(公告)号:US11051198B2

    公开(公告)日:2021-06-29

    申请号:US16608623

    申请日:2018-04-27

    Abstract: A method for channel and interference measurement in a wireless communication system according to an embodiment of the present disclosure is performed by a terminal, and may comprise the steps of: receiving a resource configuration for channel and interference measurement from a base station, wherein a resource for the channel and interference measurement is shared with a plurality of terminals served by the base station; and performing channel and interference measurement on the basis of the received resource configuration for the channel and interference measurement, wherein the resource for the channel and interference measurement includes a resource in which a resource for channel measurement and a resource for interference measurement are configured in a fully or partially overlapping manner, and the fully or partially overlapping resource may be configured in units of antenna ports or antenna port groups, which correspond to the resource for channel measurement.

    Method for transmitting and receiving sounding reference signal in wireless communication system and device therefor

    公开(公告)号:US11018822B2

    公开(公告)日:2021-05-25

    申请号:US16756260

    申请日:2019-02-21

    Abstract: The present disclosure provides a method for transmitting and receiving a sounding reference signal (SRS) in a wireless communication system and a device therefor. Specifically, a method for transmitting, by a terminal, an SRS in a wireless communication system may comprise the steps of: receiving configuration information for transmission of the SRS from a base station; and transmitting the SRS to the base station by using one or more SRS resources for transmission of the SRS, the configuration information including the one or more SRS resources and information relating to the usage of the one or more SRS resources, wherein a guard period relating to the one or more SRS resources is configured, and when the transmissions of the guard period and a particular uplink channel configured for the terminal overlap each other, the priority between the guard period and the particular uplink channel is configured to be the same as that between the SRS and the particular uplink channel.

    Method for assigning PTRS for phase noise removal in wireless communication system, and device therefor

    公开(公告)号:US10965415B2

    公开(公告)日:2021-03-30

    申请号:US16497776

    申请日:2018-03-23

    Abstract: A method for a base station to transmit a signal allowing a terminal to remove phase noise in an mmWave communication system, according to an embodiment of the present specification, may be provided. Here, the method for transmitting a signal for removing phase noise comprises: a step of generating a phase tracking reference signal (PTRS) and a first RS; a step of assigning the PTRS and the first RS to a resource block; and a step of transmitting the assigned PTRS and first RS, wherein the step of assigning the PTRS and the first RS includes a step of changing a frequency location of the PTRS if the PTRS and the first RS collide in the resource block, wherein the changed PTRS frequency location may be changed to a frequency location, across frequencies on which a predetermined demodulation reference signal (DMRS) port, associated with the PTRS, in a DMRS port group is located, which is closest to the existing PTRS frequency location and avoids collision with the first RS.

    METHOD FOR TRANSMITTING RANDOM ACCESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR METHOD

    公开(公告)号:US20200236712A1

    公开(公告)日:2020-07-23

    申请号:US15760034

    申请日:2016-09-26

    Abstract: Disclosed is a method for transmitting a random access signal in a wireless communication system, the method performed by an user equipment (UE) according to the present specification comprising: transmitting a random access signal to a base station by means of a physical random access channel (PRACH) resource area of a narrow band (NB) having a system bandwidth of 180 kHz, wherein the PRACH resource area comprises a first PRACH resource area and a second PRACH resource area, each of which comprising at least one subcarrier having a particular subcarrier spacing, and any one from among the first PRACH resource area and second PRACH resource area is utilized for data transmission.

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