Method and apparatus for uplink signal transmission based on codebook in a wireless communication system

    公开(公告)号:US11632155B2

    公开(公告)日:2023-04-18

    申请号:US16995283

    申请日:2020-08-17

    Abstract: A method of a UE transmitting a codebook based uplink signal in a wireless communication system, the method comprising: transmitting capability information about UE capability that maintains differences between phase values applied to antenna ports for uplink signal transmission; receiving configuration information for determining a codebook subset related to the uplink signal transmission based on the capability information; receiving DCI for determining a precoding matrix applied to the uplink signal transmission; determining a precoding matrix to be applied for the uplink signal transmission, based on the DCI, from the codebook subset determined based on the configuration information; and transmitting the uplink signal, based on the determined precoding matrix, wherein, based on that the differences between phase values are maintained at some antenna ports, the codebook subset includes at least one specific precoding matrix applying different phase values to the antenna ports included in some or all of some antennas.

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

    公开(公告)号:US11496261B2

    公开(公告)日:2022-11-08

    申请号:US17224800

    申请日:2021-04-07

    Abstract: Systems and techniques or transmitting and receiving a sounding reference signal (SRS) in a wireless communication system. In some implementations, a method for transmitting, by a terminal, an SRS in a wireless communication system includes: 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 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 of transmitting and receiving downlink signal in wireless communication system and apparatus therefor

    公开(公告)号:US11452083B2

    公开(公告)日:2022-09-20

    申请号:US16777477

    申请日:2020-01-30

    Abstract: According to one embodiment of the present invention, a method of receiving a downlink signal, which is received by a user equipment in a wireless communication system, includes the steps of receiving a TxPowerResourceConfigList for a user equipment which is not configured with a transmission mode 10 and one or more zeroTxPowerResourceConfigLists and receiving a DCI (downlink control channel) including a PRI (PDSCH RE mapping indicator). In this case, the user equipment can recognize whether a PDSCH (physical downlink shared channel) is mapped to REs (resource elements) to which a CSI-RS is transmittable using the one or more zeroTxPowerResourceConfigLists and the PRI.

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

    公开(公告)号:US11296766B2

    公开(公告)日:2022-04-05

    申请号:US16621618

    申请日:2018-06-14

    Abstract: Systems and techniques for reporting channel state information (CSI) in a wireless communication system and a device therefor. Particularly, a method for reporting channel state information (CSI) of a terminal in a wireless communication system can include the steps of: measuring a CSI reference signal (CSI-RS) transmitted by means of multi-panels from a base station; and reporting CSI, which is generated on the basis of the CSI-RS measurement, to the base station. If the terminal receives, from the base station, configuration of a CSI report excluding a matrix index for phase calibration between panels, the CSI includes only a first matrix index, for wide-band (WB) panel compensation, and a second matrix index, for subband (SB) panel compensation, and can be calculated by means of the first matrix index, the second matrix index and a particular matrix index associated with the phase calibration between the panels.

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