Flexible resource configuration for NR V2X unicast

    公开(公告)号:US11445477B2

    公开(公告)日:2022-09-13

    申请号:US16742400

    申请日:2020-01-14

    Abstract: A method and apparatus for flexible resource configuration for unicast vehicle-to-everything (V2X) communication in new radio access technology (NR) is provided. The wireless is configured with a monitoring channel busy ratio (CBR) threshold and an entering CBR threshold. While performing sidelink transmission in a first transmission mode by using a third resource pool among at least one first resource pool for the first transmission mode, the wireless device measures a CBR of the third resource pool, and monitors at least one second resource pool for a second transmission mode based on that the CBR of the third resource pool is higher than the monitoring CBR threshold. Upon satisfying a condition related to the entering CBR threshold, the wireless device can perform sidelink transmission in the first transmission mode by using both the third resource pool and a fourth resource pool among the at least second resource pool.

    Method and device for requesting system information

    公开(公告)号:US11412541B2

    公开(公告)日:2022-08-09

    申请号:US17584090

    申请日:2022-01-25

    Abstract: Provided are a method for a user equipment (UE) to request system information in a wireless communication system and a device supporting the same. The method may include: transmitting a random access preamble for requesting system information to a base station (BS); receiving, from the BS, a random access response including only a random access preamble identifier (RAPID) corresponding to the transmitted random access preamble; and considering that a random access procedure is completed.

    Method and apparatus for selecting carrier

    公开(公告)号:US11317401B2

    公开(公告)日:2022-04-26

    申请号:US16616855

    申请日:2018-07-24

    Abstract: Provided are a method for a user equipment (UE) to transmit a medium access control protocol data unit (MAC PDU) in a wireless communication system, and an apparatus supporting the same. The method may include: allocating resource grants on multiple carriers; selecting a first carrier among the multiple carriers, based on allocated time of the resource grants; allocating a resource of the selected first carrier to a logical channel with the highest priority; and transmitting the MAC PDU, by using the resource of the selected first carrier.

    Method and UE for triggering sidelink resource reselection

    公开(公告)号:US11140612B2

    公开(公告)日:2021-10-05

    申请号:US16331342

    申请日:2017-10-20

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for triggering resource reselection for sidelink transmission prioritized over the uplink transmission in wireless communication system, the method comprising: performing an autonomous denial procedure for uplink transmission when uplink transmission and sidelink transmission are overlapped in a subframe, wherein the subframe is one of subframes allowed for denial of the uplink transmission during a validity period; triggering sidelink resource reselection if a number of subframes for which the UE is required to deny any uplink transmission during the autonomous denial procedure is above a threshold value; and performing the sidelink resource reselection.

    Method for performing V2X communication in wireless communication system and apparatus therefor

    公开(公告)号:US11115790B2

    公开(公告)日:2021-09-07

    申请号:US16611408

    申请日:2018-05-08

    Abstract: A method for performing a V2X communication in a wireless communication system and a device therefor are disclosed. A method for performing, by a user equipment (UE), a vehicle-to-everything (V2X) communication in a wireless communication system includes receiving a transmission request of a V2X message from an upper layer, when receiving the transmission request of the V2X message, selecting a resource for the V2X communication over a PC5 interface if the UE is ‘Not served by evolved universal terrestrial radio access network (E-UTRAN) for V2X communication’, and performing a transmission for the V2X communication over the PC5 interface. If the UE is camped on a cell supporting the V2X communication, and a carrier frequency provided by the cell on which the UE is camped does not belong to a pre-configured carrier frequency the UE intends to use, the UE is considered as ‘Not served by E-UTRAN for V2X communication’.

    Method for transmitting a paging message and device supporting the same

    公开(公告)号:US11109349B2

    公开(公告)日:2021-08-31

    申请号:US16859428

    申请日:2020-04-27

    Abstract: A method for a wireless device in a wireless communication system includes receiving a paging from a distribution unit (DU) of a base station; and upon receiving the paging message, initiating a service request procedure. Further, the paging is based on paging information transmitted from a central unit (CU) of the base station to the DU of the base station. The paging information includes paging discontinuous reception (DRX) information and paging priority information. The DU of the base station has a radio link control (RLC) layer, a media access control (MAC) layer and a physical layer of the base station. In addition, the CU of the base station has a radio resource control (RRC) layer, a service data adaptation protocol (SDAP) layer, and a packet data convergence protocol (PDCP) layer of the base station.

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