Abstract:
The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) by a user equipment in a wireless communication system includes receiving a CSI-reference signal (CSI-RS), determining overhead of a common reference signal (CRS) resource element based on the same antenna port number as an antenna port number associated with the CSI-RS, and transmitting the CSI calculated based on the CSI-RS and the overhead of the CRS resource element.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for reporting a channel state by a terminal to a serving base station in a wireless communication system, wherein extra channel state information is reported to enable the serving base station to estimate the channel state more accurately. When the base station estimates the channel state with the terminal, the channel state information received from the terminal, the extra channel state information, and traffic information of neighboring base stations are collectively considered to estimate the channel state with the terminal, thereby enabling estimation of the channel state with improved reliability and accuracy.
Abstract:
The present invention relates to a method for receiving a reference CSI configuration information and a following CSI configuration information which is configured to report a same RI (Rank Indicator) as the reference CSI configuration information, receiving a first CSI-RS (Channel State Information-Resource Signal) configuration information associated with the reference CSI configuration and a second CSI-RS configuration information associated with the following CSI configuration, number of CSI-RS antenna ports according to the second CSI-RS configuration information is same as number of CSI-RS antenna ports according to the first CSI-RS configuration information; and transmitting CSI determined based on at least one of the first CSI-RS configuration information and the second CSI-RS configuration information.
Abstract:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for a terminal to report channel state information in a wireless communication system, the method comprising: a step of transmitting first channel state information according to a first channel state information (CSI) process for reporting the first channel state information periodically for every first period; a step of transmitting second channel state information according to a second CSI process for reporting the second channel state information periodically for every second period; and a step of dropping the transmission of either the first channel state information or the second channel state information on the basis of the CSI process index of each of the first and second CSI processes in the event the first channel state information transmission timing and the second channel state information transmission timing conflict.
Abstract:
The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting channel state information in a cooperative multipoint communication system. A method for a terminal transmitting the channel state information (CSI) with respect to multiple base stations in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving information on a periodic report setting of CSI including a rank indicator (RI) with respect to a first base station and a first type of precoding matrix indicator (PMI), and information on a periodic report setting of CSI including an RI with respect to a second base station and the first type of precoding matrix; and a step of transmitting the CSI to the first base station and the second base station on the basis of CSI report setting with respect to the first base station and the second base station, wherein a report on one of the first type of PMI with respect to the first base station, the first type of PMI with respect to the second base station, and the RI with respect to the second base station is omitted, and additional CIS can be transmitted when the report is omitted.
Abstract:
The present invention relates to a wireless communication system, and more specifically to a method and an apparatus for feeding back the muting point information in a coordinated multi-point communication system. A method for enabling a terminal to transmit feedback information for the coordinated transmission in the wireless communication system according to one embodiment of the present invention comprises the steps: receiving reference signals for the feedback of the channel state information from a plurality of base stations capable of participating in the coordinated transmission; measuring each channel state value for the plurality of base stations based on the reference signals; and transmitting the muting point information to indicate the preferring base station participating in the coordinated transmission among the plurality of base stations.
Abstract:
A method for transmitting, by a user equipment (UE), a channel state information (CSI) in a wireless communication system is disclosed. The method includes receiving control information about a transmission of the CSI from a serving eNodeB, allocating a CSI combination composed of different CSIs to one subframe based on the received control information, and transmitting the CSI combination to the serving eNodeB in the allocated subframe, wherein the control information includes information on a maximum payload size of a CSI being able to be transmitted in one subframe, a transmission period and a transmission start time point of the CSI combination, and a transmission period and a transmission start time point of each of the different CSIs.
Abstract:
Disclosed are a method and device for transmitting/receiving a downlink channel from multiple transmission/reception points in a wireless communication system. A method for a terminal to receive a downlink channel in a wireless communication system according to an embodiment of the present disclosure comprises the steps of: receiving a downlink control channel on the basis of two or more transmission configuration indicator (TCI) states associated with one or more control resource sets (CORESETs); and receiving a downlink data channel on the basis of the two or more TCI states associated with one or more CORESETs, on the basis of TCI information not being included in downlink control information (DCI) received through the downlink control channel, wherein the two or more TCI states may be mapped to the downlink data channel on the basis of a prescribed mapping scheme.
Abstract:
Presented in the present specification are a method for transmitting and receiving a plurality of PDSCHs in a wireless communication system, and a device therefor. Particularly, a method performed by a user equipment (UE) comprises the steps of: transmitting UE capability information related to the number of reception beams that can be supported simultaneously; receiving a plurality of physical downlink control channels (PDCCHs) including information for scheduling a PDSCH; and receiving a plurality of PDSCHs on the basis of the plurality of PDCCHs, wherein each of the plurality of PDSCHs can be received, on the basis of the UE capability information related to supporting one receiving beam, in resources set on the basis of a requirement time for applying quasi co-location (QCL) information about a spatial parameter.
Abstract:
Disclosed are a method and an apparatus for uplink transmission and reception in a wireless communication system. A method of performing uplink transmission initiated by a terminal in a wireless communication system according to an embodiment of the present disclosure may include receiving, from a base station, configuration information including multiple uplink transmission resources related to a triggering event; and based on the triggering event for the uplink transmission, performing the uplink transmission to the base station in a transmission occasion, based on a first uplink transmission resource or a second uplink transmission resource of the multiple uplink transmission resources, wherein the first uplink transmission resource is related to a first control resource set (CORESET) group, and the second uplink transmission resource is related to a second CORESET group.