METHOD AND APPARATUS FOR TRANSMITTING CONTENTION-BASED DATA IN WIRELESS COMMUNICATION SYSTEM TO WHICH NON-ORTHOGONAL MULTIPLE ACCESS SCHEME IS APPLIED

    公开(公告)号:US20210289546A1

    公开(公告)日:2021-09-16

    申请号:US16334619

    申请日:2017-07-27

    Abstract: Provided are a method and a device for performing communication using a non-orthogonal code multiple access scheme in a wireless communication system. Specifically, a terminal divides a terminal identifier into a first field, a second field, a third field and a fourth field and selects a first reference signal, a second reference signal, a third reference signal and a fourth reference signal. On the basis of the first reference signal, the second reference signal, the third reference signal or the fourth reference signal, the terminal transmits contention-based data to a base station. The first reference signal is selected on the basis of the first field and the maximum number of reference signals. The second reference signal is selected on the basis of the second field and the maximum number of reference signals. The third reference signal is selected on the basis of the third field and the maximum number of reference signals. The fourth reference signal is selected on the basis of the second field and the maximum number of reference signals.

    METHOD FOR TRANSMITTING/RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

    公开(公告)号:US20200351815A1

    公开(公告)日:2020-11-05

    申请号:US16642821

    申请日:2018-08-29

    Abstract: A method whereby a user equipment transmits/receives a reference signal for distance measurement in a wireless communication system according to an embodiment of the present invention comprises: a step of receiving, from a base station, a downlink (DL) positioning reference signal (PRS) including sinusoidal components of different angular frequencies; a step of acquiring a phase difference between the sinusoidal components of the DL PRS; a step of transmitting a first uplink (UL) PRS indicating the phase difference, so as to measure a first distance between the user equipment and the base station at a first point of time; and a step of transmitting a second UL PRS so as to measure a second distance between the user equipment, the position of which has changed after the first point of time, and the base station, wherein the user equipment may configure the same phase difference, acquired via the DL PRS before the first point of time, for the second UL PRS, without receiving an additional DL PRS for measuring the second distance. The user equipment is capable of communicating with at least one of another user equipment, a user equipment related to an autonomous driving vehicle, the base station or a network.

    METHOD AND DEVICE FOR PERFORMING LOCATION MEASUREMENT ON BASIS OF PDOA

    公开(公告)号:US20200128357A1

    公开(公告)日:2020-04-23

    申请号:US16627221

    申请日:2018-01-19

    Abstract: Provided is a method by which a terminal performs location measurement on the basis of a PDOA in a wireless communication system, according to one embodiment of the present description, wherein the method, by which a terminal performs location measurement on the basis of PDOA, comprises: a step for receiving, from a base station, a signal through a plurality of paths; a step for acquiring phase difference information on each of the plurality of paths; and a step for reporting, to the base station, the phase difference information on the basis of the reference signal. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, the base station, or a network.

    METHOD FOR TRANSMITTING OR RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

    公开(公告)号:US20200053789A1

    公开(公告)日:2020-02-13

    申请号:US16342793

    申请日:2017-08-08

    Abstract: A method for performing, by a terminal, a contention-based uplink transmission in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: selecting any one of a plurality of codewords and any one of a plurality of demodulation reference signals (DMRS), the plurality of codewords and the plurality of DMRSs being set in a contention resource area for a contention-based uplink transmission; and transmitting, through the contention resource area, uplink data that corresponds to the selected codeword, and the selected DMRS, wherein the DMRS is transmitted in an orthogonal multiple access (OMA) scheme, the uplink data is transmitted in a non-orthogonal multiple access (NOMA) scheme, and the selected DMRS is one of the K DMRSs mapped to the selected codeword, wherein K may be an integer greater than or equal to 1, which is changed according to a DMRS collision occurring in the contention resource area.

    METHOD AND APPARATUS FOR TRANSMITTING INFORMATION FOR POSITION MEASUREMENT

    公开(公告)号:US20200041604A1

    公开(公告)日:2020-02-06

    申请号:US16489445

    申请日:2017-10-10

    Abstract: A method for transmitting information for position measurement by a terminal in a wireless communication system. The method for transmitting information for position measurement by a terminal may include the steps of: receiving a reference signal from a base station; and transmitting information for position measurement to the base station on the basis of the reference signal. The information for the position measurement may be information related to a phase difference of arrival (PDOA). The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, the base station or a network.

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