Abstract:
A method for receiving a signal from a base station by a user equipment using beamforming based on a massive antenna array in a wireless communication system is disclosed. The method includes configuring a preferred antenna port set among a plurality of antenna ports included in the massive antenna array, measuring channel state information by receiving a reference signal corresponding to the preferred antenna port set and reporting the channel state information to the base station, and receiving a beam-formed signal from the base station using the preferred antenna port set based on the channel state information.
Abstract:
The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for reporting channel state information (CSI). Particularly, the method comprises the steps of: receiving a reference signal (RS) from a base station; and reporting, to the base station, the CSI generated by using the RS, wherein the CSI is measured on the basis of a specific CSI-RS set among a plurality of CSI-RS sets, beamforming weight vectors in a vertical domain which are set differently for each of horizontal domain antenna ports to which the same beamforming weight vectors in a vertical domain is applied.
Abstract:
The present invention relates to a wireless communication system and, more specifically, to a method and device for reporting channel state information (CSI). The method by which a terminal in a wireless communication system reports CSI, according to one embodiment of the present invention, can comprise the steps of: receiving a reference signal from a base station; and reporting, to the base station, the CSI generated by using the reference signal. The CSI can include at least one first domain precoding matrix indicator (PMI) indicating a first precoding matrix for a first domain of a two-dimensional antenna structure and at least one second domain PMI indicating a second precoding matrix for a second domain of the two-dimensional antenna structure. A reporting period of the at least one first domain PMI can be shorter than a reporting period of the at least one second domain PMI.
Abstract:
A method for estimating a location of a mobile station includes transmitting a position request signal, including at least departure time information or an identifier of the mobile station, to an AP by synchronizing with the AP, receiving first position information, including at least a calculated first location of the mobile station or a calculated first distance between the mobile station and the AP and departure time information of a position response signal, from the AP, calculating a ToA of a signal between the mobile station and the AP based on the departure time information of the position response signal, calculating at least a second distance between the mobile station and the AP or a second location of the mobile station using the ToA, and determining a final location of the mobile station based on the first position information and at least the second distance or the second location.
Abstract:
Disclosed are a method and device for assessing radio link quality in a wireless communication system. A method for assessing radio link quality according to one embodiment of the present disclosure may comprise the steps of: receiving configuration information related to a control resource set (CORESET) from a base station; and assessing radio link quality on the basis of one or more reference signals (RS) for the CORESET related to a physical downlink control channel (PDCCH) monitored by a terminal. The radio link quality may be assessed on the basis of the one or more reference signals among a plurality of reference signals for which a quasi co-location (QCL) related to a spatial reception parameter for the CORESET has been set.
Abstract:
A method and a device for transmitting/receiving channel state information (CSI) in a wireless communication system are disclosed. A method by which a terminal transmits CSI in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of: receiving configuration information related to CSI reporting; receiving a CSI-reference signal (RS) from at least one CSI-RS resource corresponding to the configuration information; and transmitting the CSI on the basis of at least one CSI-RS and the configuration information.
Abstract:
Disclosed are a method and device for transmitting and receiving a physical channel in a wireless communication system. A method for receiving a physical downlink shared channel (PDSCH) according to one embodiment of the present disclosure may comprise the steps of: receiving configuration information relating to a training reference signals for training an artificial intelligence/machine learning (AI/ML) model from a base station; receiving the plurality of training reference signals from the base station; receiving control information for scheduling the PDSCH from the base station; and receiving the PDSCH from the base station on the basis of an inference derived with respect to a demodulation reference signal (DMRS) of the PDSCH from the AI/ML model which has been trained by means of one or more training reference signals from among the plurality of training reference signals.
Abstract:
Disclosed are a method and device for bandwidth part (BWP) switching-based uplink transmission or reception in a wireless communication system. A method performed in a wireless communication system by a terminal according to an embodiment disclosed herein may comprise the steps of: receiving configuration information about a first BWP and a second BWP; and performing uplink transmission on the activated second BWP on the basis of a configuration related to a specific index for the terminal and on the basis of a BWP inactivity timer not being applied.
Abstract:
A method and a device for transmitting/receiving a wireless signal in a wireless communication system are disclosed. A method by which a terminal reports channel state information (CSI), according to one embodiment of the present disclosure, may comprise the steps of: receiving, from a base station, configuration information related to a CSI report; receiving, from the base station, at least one CSI-reference signal (CSI-RS) on the basis of the configuration information; and transmitting, to the base station, a CSI calculated on the basis of the at least one CSI-RS. Here, the CSI can include a plurality of parameters according to the configuration information, and at least one of the plurality of parameters can be determined on the basis of a specific learning algorithm.
Abstract:
Disclosed are a method and apparatus for transmitting and receiving channel state information in a wireless communication system. The method for transmitting channel state information (CSI) according to an embodiment of the present disclosure, may comprise the steps of: receiving, from a base station, configuration information related to the CSI, wherein the configuration information includes information about a CSI-RS resource set; receiving a CSI-reference signal (CSI-RS) from the base station; and transmitting the CSI, to the base station, on the basis of the configuration information and the CSI-RS. The CSI-RS resource set may include M CSI-RS resource groups (M is a natural number), and the CSI may include N first CSI sets generated on the basis of a single CSI-RS resource in N mutually different CSI-RS resource groups (N≤M, N is a natural number) from among the M CSI-RS resource groups.