METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220330276A1

    公开(公告)日:2022-10-13

    申请号:US17841294

    申请日:2022-06-15

    Abstract: A method of transmitting channel state information (CSI) in a wireless communication system includes: receiving, from a base station, configuration information related to CSI; receiving, from the base station, a CSI-reference signal (CSI-RS) on a plurality of CSI-RS resources; and transmitting, to the base station, first CSI based on the configuration information. The plurality of CSI-RS resources corresponding to the configuration information are configured with (i) one or more channel measurement resources (CMRs) configured to be used to derive CSI based on a single CMR and (ii) one or more CMR pairs configured to be used to derive CSI based on a single CMR pair, unless there is a specific configuration by the configuration information, based on the first CSI being CSI derived based on a single CMR, any CMR included in the one or more CMR pairs may be not used to derive the first CSI.

    METHOD FOR TRANSMITTING OR RECEIVING PHYSICAL DOWNLINK SHARED CHANNEL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20220224472A1

    公开(公告)日:2022-07-14

    申请号:US17608331

    申请日:2020-05-04

    Abstract: A method for receiving a physical downlink shared channel (PDSCH) by a user equipment (UE) in a wireless communication system and device therefor is disclosed in the present disclosure.
    Particularly, a method for receiving a physical downlink shared channel (PDSCH) by a user equipment (UE) in a wireless communication system, the method according to an embodiment of the present disclosure comprising: receiving downlink control information (DCI); wherein the DCI includes i) a transmission configuration indication (TCI) field and ii) an antenna port field; and receiving the PDSCH scheduled based on the DCI, wherein a plurality of TCI states are indicated based on the TCI field, and demodulation reference signal (DM-RS) ports of a plurality of code division multiplexing (CDM) groups are indicated based on the antenna port field, and wherein a first TCI state among the plurality of TCI states corresponds to a CDM group including a first DM-RS port based on an instruction order of the DM-RS ports.

    METHOD FOR TRANSMITTING AND RECEIVING SRS AND COMMUNICATION DEVICE THEREFOR

    公开(公告)号:US20220085934A1

    公开(公告)日:2022-03-17

    申请号:US16652978

    申请日:2018-10-10

    Abstract: A method for transmitting an SRS by a user equipment may comprise the steps of: transmitting, to a base station, user equipment capability information including information on a frequency bandwidth where SRS frequency hopping for the user equipment is possible; receiving, from the base station, first information on an SRS bandwidth configuration and second information on the start point of an SRS frequency for transmission of an SRS; and transmitting the SRS to the base station on the basis of the first information and the second information, wherein the frequency bandwidth where SRS frequency hopping for the user equipment is possible corresponds to a partial frequency bandwidth within a bandwidth part (BWP) configured for transmission of the SRS. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.

    METHOD FOR ASSIGNING PTRS FOR PHASE NOISE REMOVAL IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

    公开(公告)号:US20210184811A1

    公开(公告)日:2021-06-17

    申请号:US17179261

    申请日:2021-02-18

    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 AND RECEIVING HARQ INFORMATION IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

    公开(公告)号:US20210160013A1

    公开(公告)日:2021-05-27

    申请号:US17108565

    申请日:2020-12-01

    Abstract: The present specification relates to a method for a terminal to transmit hybrid automatic repeat and request (HARQ) feedback information in a wireless communication system supporting coordinated multiple point (CoMP) transmission, the method comprising: a step for receiving a first PDCCH and a second PDCCH from a first transmission node and a second transmission node, respectively; a step for receiving, from the first transmission node and the second transmission node, a first PDSCH and a second PDSCH scheduled by the first PDCCH and the second PDCCH, respectively; a step for determining the type of HARQ-ACK codebook for the first PDSCH and the second PDSCH; and a step for transmitting HARQ feedback information for the determined HARQ-ACK codebook, wherein the first PDCCH and the second PDCCH include specific HARQ feedback timing information used for the CoMP, and when a reception occasion for the first PDSCH and a reception occasion for the second PDSCH overlap, the HARQ feedback information is transmitted on a slot corresponding to the value indicated by the specific HARQ feedback timing information.

    METHOD FOR TRANSMITTING SRS AND TERMINAL THEREFOR

    公开(公告)号:US20210083825A1

    公开(公告)日:2021-03-18

    申请号:US16629909

    申请日:2018-01-30

    Abstract: A method by which a terminal transmits an SRS can comprise the steps of: receiving, from a base station, first information indicating symbols to which the SRS is transmitted among a plurality of symbols, when the terminal is configured to perform antenna switching for an SRS transmission on the plurality of symbols; and transmitting the SRS on the indicated symbols, wherein the SRS is transmitted through antenna ports respectively corresponding to the indicated symbols, and the antenna ports respectively corresponding to the indicated symbols can be different from each other.

    Method and apparatus for transmitting and receiving reference signals in a wireless communication system

    公开(公告)号:US20200178287A1

    公开(公告)日:2020-06-04

    申请号:US16099954

    申请日:2018-07-10

    Abstract: Disclosed is a method and apparatus for transmitting and receiving a Reference Signal (RS) performed by a User Equipment (UE) in a wireless communication system. According to the present invention, a method and apparatus includes receiving a first Dedicated Demodulation Reference Signal and a first Physical Downlink Shared Channel (PDSCH); receiving a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI) in relation to a configuration of the second Dedicated Demodulation Reference Signal based on the first PDSCH; and receiving the second Dedicated Demodulation Reference Signal and a second PDSCH based on the PDCCH, and the first Dedicated Demodulation Reference Signal is transmitted only on a single antenna port, and a configuration of the DCI is determined based on the maximum number of symbols to which the second Dedicated Demodulation Reference Signal is mapped.

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