Method and device for reporting information about SL HARQ feedback in NR V2X

    公开(公告)号:US12232120B2

    公开(公告)日:2025-02-18

    申请号:US17630060

    申请日:2020-08-12

    Abstract: Provided are a method for a first device to perform wireless communication, and a device supporting same. The method may include the steps of: receiving first downlink control information (DCI), including information related to a first physical uplink control channel (PUCCH) resource and information related to sidelink (SL) resource allocation, from a base station through a first physical downlink control channel (PDCCH); transmitting a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) to a second device on the basis of the information related to the SL resource allocation; receiving SL hybrid automatic repeat request (HARQ) feedback from the second device through a physical sidelink feedback channel (PSFCH) related to the PSSCH; receiving second DCI, including information related a second PUCCH resource and information related to downlink (DL) resource allocation, from the base station through a second PDCCH; receiving a physical downlink shared channel (PDSCH) related to the second PDCCH from the base station on the basis of information related to the DL resource allocation; and transmitting, on at least one of the first PUCCH resource or the second PUCCH resource, at least one of the SL HARQ feedback or HARQ feedback related to the PDSCH to the base station. Here, the first PUCCH resource and the second PUCCH resource may overlap in the time domain.

    Method and apparatus for selecting criteria for sidelink synchronization in NR V2X

    公开(公告)号:US12232057B2

    公开(公告)日:2025-02-18

    申请号:US17771765

    申请日:2020-10-23

    Abstract: Proposed is a method for performing wireless communication by a first device. The method may comprise the steps of: receiving a plurality of sidelink-synchronization signal blocks (S-SSBs) from a plurality of synchronization sources, wherein each of the plurality of S-SSBs includes a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), and a physical sidelink broadcast channel (PSBCH); selecting any one of the plurality of synchronization sources on the basis of a reference signal received power (RSRP) associated with each of the plurality of S-SSBs and a sidelink synchronization signal (SLSS) ID associated with each of the plurality of S-SSBs; performing synchronization on the basis of the S-SSB associated with the selected synchronization source; and transmitting a PSCCH or PSSCH to a second device on the basis of the synchronization. For example, the SLSS ID associated with each of the plurality of S-SSBs may be a criterion for selecting any one of the plurality of synchronization sources, on the basis of the fact that a RSRP value associated with each of the plurality of S-SSBs is greater than or equal to a minimum RSRP threshold value.

    Method for transmitting sidelink signal in wireless communication system

    公开(公告)号:US12160838B2

    公开(公告)日:2024-12-03

    申请号:US17593272

    申请日:2020-06-04

    Abstract: According to an aspect of the present disclosure, a method for transmitting a sidelink signal by a user equipment in a wireless communication system comprises: mapping a first complex-valued modulation symbol, which is associated with a sidelink control signal, to a control resource included in a sidelink resource, mapping at least one second complex-valued modulation symbol, which is associated with a sidelink data signal, to a data resource included in the sidelink source, and mapping a pre-configured value to a plurality of subcarriers included in the sidelink resource; generating the sidelink signal by modulating the at least one first complex-valued modulation symbol, the at least one second complex-valued modulation symbol, and the pre-configured value via orthogonal frequency division multiplexing (OFDM), wherein the sidelink signal comprises the sidelink control signal and the sidelink data signal; and transmitting the sidelink signal, wherein the plurality of subcarriers comprise a subcarrier having an intermediate frequency index in the sidelink resource, and power allocated to each of the plurality of subcarriers is one of values included within a preset range.

    Method and device for transmitting PSFCH and PRS in NR V2X

    公开(公告)号:US12101271B2

    公开(公告)日:2024-09-24

    申请号:US17763012

    申请日:2020-10-05

    CPC classification number: H04L5/0048 H04W72/20 H04B7/06954 H04W72/40

    Abstract: According to one embodiment of the present disclosure, provided is a method in which a first device performs sidelink communication. The method may comprise: a step for determining at least one PRS resource for transmitting at least one PRS for sidelink positioning; a step for transmitting, to a second device, the at least one PRS on the basis of the at least one PRS resource; a step for receiving, from the second device, a PSCCH and a PSSCH associated with the PSCCH; a step for determining at least one PSFCH resource for transmitting the PSCCH or at least one PSFCH related to the PSSCH to the second device; and a step for transmitting, to the second device, the at least one PSFCH on the basis of the at least one PSFCH resource.

    Method and apparatus for performing SL communication on basis of resources allocated by base station in NR V2X

    公开(公告)号:US11937275B2

    公开(公告)日:2024-03-19

    申请号:US18229554

    申请日:2023-08-02

    CPC classification number: H04W72/40 H04L5/0055 H04W72/1263 H04W72/232

    Abstract: Provided are a method by which a first device performs wireless communication, and an apparatus supporting same. The method may comprise the steps of: receiving, from a base station, first downlink control information (DCI) for activating a configured sidelink (SL) grant, wherein the first DCI includes information related to a physical uplink control channel (PUCCH) resource for reporting SL hybrid automatic repeat request (HARQ) feedback to the base station; transmitting a medium access control protocol data unit (MAC PDU) to a second device through a physical sidelink shared channel (PSSCH) on the basis of the configured SL grant; receiving, from the base station, second DCI for deactivating the configured SL grant; transmitting, to the base station, an SL confirmation medium access control (MAC) control element (CE) in response to the second DCI; and determining whether the PUCCH resource related to at least one SL resource allocated by the configured SL grant is valid on the basis of the time at which the SL confirmation MAC CE was transmitted.

    Method and device for reporting HARQ feedback to base station in NR V2X

    公开(公告)号:US11917649B2

    公开(公告)日:2024-02-27

    申请号:US18123089

    申请日:2023-03-17

    CPC classification number: H04W72/232 H04L1/1812 H04W72/1263

    Abstract: A method for a first device to perform wireless communication and a device supporting same. The method may include: receiving, from the base station through a second PDCCH, a second DCI including information related to a second SL resource and information related to a second PUCCH resource; transmitting a first physical sidelink shared channel (PSSCH) based on the first SL resource; and transmitting, to the base station through the second PUCCH resource, first hybrid automatic repeat request (HARQ) feedback information related to the first PSSCH and second HARQ feedback information related to the second PSSCH, based on a slot including the first PUCCH resource being same as a slot including the second PUCCH resource, wherein the second DCI is a last DCI among a plurality of DCIs including information related to the slot for PUCCH transmission.

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