Method and apparatus for performing sidelink retransmission in NR V2X

    公开(公告)号:US11792821B2

    公开(公告)日:2023-10-17

    申请号:US17966311

    申请日:2022-10-14

    CPC classification number: H04W72/23 H04L1/1812 H04W4/40

    Abstract: A method by which a first device performs sidelink communication is provided. The method comprises the steps of: receiving, from a base station, a sidelink grant associated with a first retransmission resource and an initial transmission resource of a transport block; transmitting, to a second device, a PSCCH and a PSSCH associated with the PSCCH, on the basis of the initial transmission resource; determining a PSFCH resource for receiving a PSFCH from the second device, on the basis of the index of a slot and the index of a subchannel associated with the PSSCH; receiving, from the second device, the PSFCH on a first PSSCH, on the basis of the PSFCH resource; comparing a time interval between the PSFCH resource and the first retransmission resource with a minimum processing time required between the reception of the PSFCH and retransmission of the transport block.

    SIDELINK COMMUNICATION METHOD CONSIDERING HEIGHT INFORMATION AND APPARATUS THEREFOR

    公开(公告)号:US20230328732A1

    公开(公告)日:2023-10-12

    申请号:US17896513

    申请日:2022-08-26

    CPC classification number: H04W72/0406 H04L1/1864

    Abstract: A sidelink communication method considering height information and an apparatus therefor are provided. A method of transmitting data by a first user equipment (UE) to a second UE in a wireless communication system includes transmitting a physical sidelink control channel (PSCCH) including first sidelink control information (SCI) to the second UE, transmitting a physical sidelink shared channel (PSSCH) including second SCI related to the first SCI to the second UE, and receiving a physical sidelink feedback channel (PSFCH) for the PSSCH from the second UE. The second SCI includes control information about a hybrid automatic repeat request (HARQ) operation, and the control information about the HARQ operation includes control information about a height.

    Method and device for performing SL communication in NR V2X on basis of auxiliary information

    公开(公告)号:US11785494B2

    公开(公告)日:2023-10-10

    申请号:US18169456

    申请日:2023-02-15

    CPC classification number: H04W28/0236 H04L47/564 H04W72/25

    Abstract: Provided are a method for a first device to perform wireless communication and a device supporting same. The method comprises the steps of: receiving an auxiliary information request from a second device; generating auxiliary information on the basis of the auxiliary information request; transmitting first sidelink control information (SCI), including scheduling information about a physical sidelink shared channel (PSSCH), to the second device through a physical sidelink control channel (PSCCH), wherein the first SCI includes information related to frequency resource allocation, information related to time resource allocation, information related to a demodulation reference signal (DMRS) pattern, and information related to a modulation and coding scheme (MCS); and transmitting the auxiliary information to the second device through the PSSCH in response to the auxiliary information request, wherein the auxiliary information may include information for sidelink (SL) resource selection for the second device.

    Method and device for configuring SL HARQ RTT timer in NR V2X

    公开(公告)号:US11770840B2

    公开(公告)日:2023-09-26

    申请号:US18051265

    申请日:2022-10-31

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

    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 scheduling plurality of resources in NR V2X

    公开(公告)号:US11722280B2

    公开(公告)日:2023-08-08

    申请号:US17887902

    申请日:2022-08-15

    CPC classification number: H04L5/0053 H04W72/1263 H04W72/20

    Abstract: A method for performing wireless communication by a first device, and an apparatus supporting same. The method includes: determining a first PSSCH resource, a second PSSCH resource, and a third PSSCH resource; and transmitting, to a second device, Sidelink Control Information (SCI) including information related to frequency domains of the second PSSCH resource and the third PSSCH resource on a first PSCCH resource related to the first PSSCH resource. Here, the information related to the frequency domains is obtained on the basis of the number of subchannels included in a resource pool, an index of a starting subchannel of the second PSSCH resource, an index of a starting subchannel of the third PSSCH resource, the number of subchannels included in the second PSSCH resource, and the number of subchannels included in the third PSSCH resource, and the information related to the frequency domains may be a zero or positive integer.

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