METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210242914A1

    公开(公告)日:2021-08-05

    申请号:US17263510

    申请日:2019-07-29

    Abstract: The present disclosure relates to a method, performed by a user equipment (UE), for reporting channel state information (CSI) in a wireless communication system and an apparatus therefor. According to the present disclosure, the UE receives a channel state information reference signal (CSI-RS) from a base station through a multiple antenna port; and reports the CSI to the base station, wherein the CSI includes a precoding matrix indicator for a codebook generated by linear combination, wherein the codebook is generated based on a specific parameter set, and wherein the specific parameter set is differently set/applied based on at least one of a rank value or at least one layer index of a specific rank.

    METHOD AND DEVICE FOR PERFORMING SEQUENTIAL BEAM REPORT PROCEDURE FOR MULTIPLE BEAMS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200336196A1

    公开(公告)日:2020-10-22

    申请号:US16960852

    申请日:2018-01-08

    Abstract: An embodiment of the present specification may provide a method for performing a sequential beam report procedure for multiple beams by a terminal in a wireless communication system. More particularly, the method comprises the steps of: receiving information for a sequential beam report procedure from a base station; measuring, using a signal received from the base station, downlink qualities of multiple beams serviced by the base station; encoding, in descending order, downlink quality measurement results of best M beams among the multiple beams, the downlink qualities of which have been measured; and transmitting the encoded information to the base station so as to perform the sequential beam report procedure.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FEEDBACK INFORMATION

    公开(公告)号:US20200244319A1

    公开(公告)日:2020-07-30

    申请号:US16756836

    申请日:2018-10-17

    Abstract: A method for transmitting feedback information by a terminal may comprise the steps of: receiving, from a base station, information on a feedback group allocated to the terminal in a predefined feedback table; selecting a first feedback index in the allocated feedback group; and transmitting feedback information including the selected first feedback index to the base station, wherein the feedback table includes a plurality of feedback groups, the plurality of feedback groups in the feedback table include predetermined number of feedback indices, respectively, and the plurality of feedback groups in the feedback table have differently configured quantization level resolutions for the feedback information, respectively.

    METHOD FOR TRANSMITTING AND RECEIVING REPORTS FOR RANGE ESTIMATION AND COMMUNICATION DEVICE THEREFOR

    公开(公告)号:US20200236495A1

    公开(公告)日:2020-07-23

    申请号:US16651314

    申请日:2018-09-27

    Abstract: A method for transmitting, by a user equipment, reports for range estimation may comprise the steps of: receiving a signal from each of a plurality of beams of a base station; calculating a time delay or a phase difference of a signal for each of the plurality of beams; and reporting, to the base station, beam index information indicating a corresponding beam with the smallest time delay or the smallest phase difference on the basis of the calculation. The user equipment is capable of communicating with at least one of another user equipment, a user equipment related to an auton-omous driving vehicle, a base station or a network.

    METHOD FOR PERFORMING MM-BASED NOMA COMMUNICATION AND DEVICE THEREFOR

    公开(公告)号:US20200163058A1

    公开(公告)日:2020-05-21

    申请号:US16610487

    申请日:2017-05-02

    Abstract: A method by which a terminal performs a multi-dimensional modulation (MM)-based non-orthogonal multiple access (NOMA) communication can comprise the steps of: receiving, from a base station, control information indicating a terminal specific codebook for a terminal in a predefined codebook set for an MM-based encoder; and receiving a downlink data channel from the base station on the basis of the indicated terminal specific codebook, or performing MM-based encoding on the basis of the indicated terminal specific codebook and then transmitting an uplink data channel.

    METHOD AND APPARATUS FOR PERFORMING SCHEDULING REQUEST FOR UPLINK DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200059949A1

    公开(公告)日:2020-02-20

    申请号:US16346090

    申请日:2017-10-17

    Abstract: A method and apparatus for performing a scheduling request for transmitting uplink data in a wireless communication system are provided. Specifically, a terminal receives allocation information for a first SR resource that is semi-statically allocated from a base station. The terminal receives allocation information for a second SR resource dynamically allocated from the base station. The second SR resource is additionally allocated in addition to the first SR resource for a buffer status report (BSR). At this time, the allocation information for the first SR resource comprises: mapping information between the first and second SR resources and buffer size information. The terminal transmits an SR to the base station through the first SR resource or the second SR resource.

    METHOD AND APPARATUS FOR COMMUNICATION USING MULTIPLE TTI STRUCTURES

    公开(公告)号:US20200053731A1

    公开(公告)日:2020-02-13

    申请号:US16654666

    申请日:2019-10-16

    Abstract: The document relates to a method for performing communication using multiple transmission time interval (TTI) structures in a wireless communication system. In this method, a terminal transmits and receives a signal through a resource region in which a first subframe corresponding to a TTI (short TTI) of a first length and a second subframe corresponding to a TTI (short TTI) of a second length longer than the first length are multiplexed in a frequency divisional multiplexing (FDM) manner, and when a second link direction of a signal transmitted through the second subframe in a specific time interval is different from a first link direction of a signal transmitted through the first subframe, the specific time interval of the second subframe is not used for signal transmission in the second link direction.

    METHOD FOR TRANSMITTING OR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20200008236A1

    公开(公告)日:2020-01-02

    申请号:US16488498

    申请日:2018-02-06

    Abstract: A method for a user equipment (UE) to transmit an uplink signal in a wireless communication system according to an embodiment of the present invention includes the steps of: determining a data transmission mode; and transmitting to a base station through a competition resource region, a control channel carrying control information including the data transmission mode, a data channel carrying at least one transmission block (TB), and a preamble, wherein the preamble indicates the position of a resource to which the control channel is mapped in the competition resource region, and the data transmission mode determined by the UE can correspond to one among a first transmission mode in which 1 TB is transmitted by being divided into N sub-blocks or a second transmission mode in which 1 TB is repeatedly transmitted M times. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, the base station or a network.

    OTFS BASIS ALLOCATION METHOD IN WIRELESS COMMUNICATION SYSTEM USING OTFS TRANSMISSION SYSTEM

    公开(公告)号:US20190268113A1

    公开(公告)日:2019-08-29

    申请号:US16320407

    申请日:2016-07-27

    Abstract: A method for receiving orthogonal time, frequency and space (OFTS) basis allocation information by an user equipment in a wireless communication system using an OTFS transmission scheme includes receiving control information including information on an OTFS basis size N from a base station; and receiving data on OTFS bases of a predetermined size indexed according to a pre-defined rule in an N×N OTFS transform matrix on time and frequency domains corresponding to the OTFS basis size, wherein the OTFS bases of the OTFS basis size N is represented into an N×N OTFS transform matrix, wherein in the N×N OTFS transform matrix, a row index represents a cyclic frequency shift index, and a column index represents a cyclic time shift index, wherein the indexing according to the pre-defined rule includes indexing the OTFS bases of the predetermined size in an order such that the cyclic frequency shift and the cyclic time shift in the N×N OTFS transform matrix are maximized.

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