METHOD FOR TRANSMITTING RANDOM ACCESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR METHOD

    公开(公告)号:US20200236712A1

    公开(公告)日:2020-07-23

    申请号:US15760034

    申请日:2016-09-26

    Abstract: Disclosed is a method for transmitting a random access signal in a wireless communication system, the method performed by an user equipment (UE) according to the present specification comprising: transmitting a random access signal to a base station by means of a physical random access channel (PRACH) resource area of a narrow band (NB) having a system bandwidth of 180 kHz, wherein the PRACH resource area comprises a first PRACH resource area and a second PRACH resource area, each of which comprising at least one subcarrier having a particular subcarrier spacing, and any one from among the first PRACH resource area and second PRACH resource area is utilized for data transmission.

    Feedback method of hybrid CSI in multi-antenna communication system and device therefor

    公开(公告)号:US10700745B2

    公开(公告)日:2020-06-30

    申请号:US16726134

    申请日:2019-12-23

    Abstract: Disclosed in the present invention is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, through an upper layer, information on one CSI process having a first enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; receiving a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type; periodically reporting, to the base station, first CSI measured on the basis of the first CSI-RS; receiving a second CSI-RS, which corresponds to the second eMIMO type, beamformed on the basis of the first CSI; and periodically reporting, to the base station, second CSI measured on the basis of the second CSI-RS, wherein a priority of the first CSI is set to be equal to a priority of a CSI-RS resource indicator (CRI).

    METHOD AND DEVICE FOR TRANSMITTING GRANT-FREE-BASED UPLINK DATA IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200154400A1

    公开(公告)日:2020-05-14

    申请号:US16478584

    申请日:2018-01-30

    Abstract: A method and a device for transmitting an uplink transmission block in a wireless communication system are provided. Particularly, a terminal receives, from a base station, allocation information on a first grant-free uplink resource, which is scheduled semi-persistently. The terminal repeatedly transmits a first transmission block through the first grant-free uplink resource by using a first reference signal. The terminal transmits a second transmission block by using a second reference signal before completion of the transmission of the first transmission block. The second transmission block is distinguished from the first transmission block through a change of the first reference signal to the second reference signal.

    Feedback method of hybrid CSI in multi-antenna communication system and device therefor

    公开(公告)号:US10554267B2

    公开(公告)日:2020-02-04

    申请号:US16309433

    申请日:2017-07-05

    Abstract: Disclosed in the present invention is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, through an upper layer, information on one CSI process having a first enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; receiving a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type; periodically reporting, to the base station, first CSI measured on the basis of the first CSI-RS; receiving a second CSI-RS, which corresponds to the second eMIMO type, beamformed on the basis of the first CSI; and periodically reporting, to the base station, second CSI measured on the basis of the second CSI-RS, wherein a priority of the first CSI is set to be equal to a priority of a CSI-RS resource indicator (CRI).

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

    公开(公告)号:US10547430B2

    公开(公告)日:2020-01-28

    申请号:US16251837

    申请日:2019-01-18

    Abstract: According to one embodiment of the present invention, a method by which a terminal reports a channel state on the basis of a channel state information-reference signal (CSI-RS) in a wireless communication system can comprise the steps of: transmitting, to a base station, terminal capability information related to the maximum number of CSI processes which can be simultaneously updated or calculated by the terminal in which a shortened processing time has been set; receiving an aperiodic CSI request from the base station; and, according to the aperiodic CSI request, updating or calculating CSI in a CSI reference resource at the point of time set for the shortened processing time, on the basis of the terminal capability information and transmitting the updated or calculated CSI to the base station.

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