METHOD AND DEVICE FOR CONFIGURING SL HARQ RTT TIMER IN NR V2X

    公开(公告)号:US20230156746A1

    公开(公告)日:2023-05-18

    申请号:US18051265

    申请日:2022-10-31

    CPC classification number: H04W72/25 H04W72/12 H04W76/28 H04L1/1812

    Abstract: Provided are a method for performing wireless communication by a first device, and a device for supporting same. The method may comprise: obtaining a sidelink (SL) discontinuous reception (DRX) configuration including a value of a SL DRX retransmission timer; receiving, from a second device through a physical sidelink control channel (PSCCH), first sidelink control information (SCI) for scheduling of second SCI and a physical sidelink shared channel (PSSCH); receiving, from the second device through the PSSCH, the second SCI and data; determining a value of a SL DRX hybrid automatic repeat request (HARD) round trip time (RTT) timer as zero, based on that information related to a next retransmission resource is not included in the first SCI; and starting the SL DRX retransmission timer.

    METHOD AND APPARATUS FOR PERFORMING DCI BASED SIDELINK COMMUNICATION IN NR V2X

    公开(公告)号:US20230124233A1

    公开(公告)日:2023-04-20

    申请号:US17778763

    申请日:2020-11-20

    Abstract: According to one embodiment of the present disclosure, provided is a method by which a first device performs sidelink communication. The method comprises the steps of: receiving a first DCI including information on a resource for LTE sidelink communication of the first device through a PDCCH from an NR base station; transmitting an SCI to a second device through a PSCCH on the basis of the resource; and transmitting data to the second device through a PSSCH related to the PSCCH, wherein the size of the first DCI can be adjusted from the size of a second DCI to the size of the first DCI, on the basis of the size of the first DCI that is obtained by the NR base station through at least one second DCI different from the first DCI.

    METHOD AND DEVICE FOR DETERMINING FEEDBACK RESOURCE IN NR V2X

    公开(公告)号:US20230069396A1

    公开(公告)日:2023-03-02

    申请号:US17981909

    申请日:2022-11-07

    Abstract: A method for performing wireless communication by a first device and a device for supporting same are provided. The method may comprise the steps of receiving a physical sidelink shared channel (PSSCH) from a second device; determining a physical sidelink feedback channel (PSFCH) resource associated with the PSSCH; and transmitting hybrid automatic repeat request (HARQ) feedback to the second device on the PSFCH resource. Here, the PSFCH resource can be determined on the basis of a sub channel associated with the PSSCH, a slot associated with the PSSCH, a cast type of communication between the first device and the second device, an ID of the first device, and a source ID of the second device.

    METHOD AND APPARATUS FOR PERFORMING SL DRX OPERATION IN NR V2X

    公开(公告)号:US20230053192A1

    公开(公告)日:2023-02-16

    申请号:US17882196

    申请日:2022-08-05

    Inventor: Seungmin LEE

    Abstract: A method for performing wireless communication by a first device and a device for supporting same are provided. The method may comprise: obtaining a default sidelink (SL) discontinuous reception (DRX) configuration; obtaining a profile representing whether SL DRX is compatible; performing first SL transmission based on the default SL DRX configuration, based on the profile representing that the SL DRX is compatible; establishing a PC5 radio resource control (RRC) connection with a second device; obtaining an SL DRX configuration; transmitting, to the second device, information related to the SL DRX configuration; and performing, to the second device, second SL transmission based on the SL DRX configuration, regardless of the profile.

    METHOD AND DEVICE FOR ALLOCATING SL HARQ FEEDBACK REPORT RESOURCE IN NR V2X

    公开(公告)号:US20230045750A1

    公开(公告)日:2023-02-09

    申请号:US17958836

    申请日:2022-10-03

    Abstract: A method for performing wireless communication by a first device includes: receiving, from a base station, downlink control information (DCI) for scheduling a sidelink (SL) resource, the DCI including information related to time between a physical sidelink feedback channel (PSFCH) resource and a physical uplink control channel (PUCCH) resource and information related to the PUCCH resource; transmitting, to a second device, a plurality of physical sidelink control channels (PSCCHs) and a plurality of physical sidelink shared channels (PSSCHs) based on the DCI; determining a plurality of PSFCH resources based on an index of a slot and a sub channel related to the plurality of PSSCHs and a source ID of the first device; receiving a plurality of pieces of SL HARQ feedback related to the plurality of PSSCHs; and transmitting, to the base station, one piece of SL hybrid automatic repeat request (HARQ) feedback on one PUCCH resource.

    METHOD AND APPARATUS FOR PERFORMING MODE 1 SL COMMUNICATION IN NR V2X

    公开(公告)号:US20230037912A1

    公开(公告)日:2023-02-09

    申请号:US17963593

    申请日:2022-10-11

    Abstract: Provided are a method by which a first device performs wireless communication an apparatus for supporting same. The method may comprise: receiving, from the base station through a physical downlink control channel (PDCCH), a downlink control information (DCI) related to the SL HARQ process ID, wherein the DCI includes information related to a second SL grant for retransmission of the MAC PDU and information related to a second PUCCH resource, wherein, based on the buffer related to the SL HARQ process ID being flushed, the first device does not transmit the MAC PDU to the second device based on the second SL grant, and the first device does not transmit SL HARQ feedback information related to the MAC PDU to the base station based on the second PUCCH resource.

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