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

    公开(公告)号:US11751222B2

    公开(公告)日:2023-09-05

    申请号:US18068251

    申请日:2022-12-19

    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 (HARD) 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 apparatus for performing wireless communication related to SL DRX in NR V2X

    公开(公告)号:US11743968B2

    公开(公告)日:2023-08-29

    申请号:US18056090

    申请日:2022-11-16

    CPC classification number: H04W76/28 H04W72/12 H04W80/02

    Abstract: Proposed are a method by which a first device performs wireless communication, and an apparatus supporting same. For example, the first device may obtain a sidelink discontinuous reception configuration including information related to an SL DRX timer. For example, the first device may obtain information related to a scheduling request configuration for a SL channel state information reporting medium access control control element (CE). For example, the first device may determine the SR configuration for the SL CSI reporting MAC CE as an SR configuration for an SL DRX command MAC CE. For example, the first device may transmit, to the base station, an SR for requesting a resource for the SL DRX command MAC CE, based on the SR configuration for the SL CSI reporting MAC CE. For example, the first device may transmit, to the second device, the SL DRX command MAC CE, based on the resource.

    Method and apparatus for transmission prioritization in wireless communication system

    公开(公告)号:US11700632B2

    公开(公告)日:2023-07-11

    申请号:US17961985

    申请日:2022-10-07

    CPC classification number: H04W72/542 H04W72/02 H04W72/56 H04W80/02 H04W92/18

    Abstract: The present disclosure relates to transmission prioritization in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: configuring a threshold; creating a media access control (MAC) protocol data unit (MAC PDU) for sidelink comprising a MAC control element (CE); setting a priority value to the MAC CE; identifying a transmission of the MAC PDU for sidelink and an uplink transmission to be performed; determining that the transmission of the MAC PDU for sidelink and the uplink transmission are not able to be performed simultaneously; determining that the priority value of the MAC CE is lower than the threshold; prioritizing the transmission of the MAC PDU for sidelink over the uplink transmission; and performing the transmission of the MAC PDU for sidelink that is prioritized over the UL transmission.

    Method and device for managing control information in NR V2X

    公开(公告)号:US11696286B2

    公开(公告)日:2023-07-04

    申请号:US17556653

    申请日:2021-12-20

    CPC classification number: H04W72/20 H04L1/1812

    Abstract: A method for performing wireless communication by a first device and a device for supporting same are provided. The method may include receiving, from a second device, a physical sidelink control channel (PSCCH) including a first sidelink control information (SCI) for scheduling a physical sidelink shared channel (PSSCH); receiving, from the second device, the PSSCH including a second SCI; and transmitting, to the second device, a hybrid automatic repeat request (HARQ) feedback through a physical sidelink feedback channel (PSFCH) in response to the PSSCH based on a format of the second SCI.

    Method and apparatus for performing mode 1 SL communication in NR V2X

    公开(公告)号:US11638292B2

    公开(公告)日:2023-04-25

    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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