Method for performing channel estimation in wireless communication system and apparatus therefor

    公开(公告)号:US11799692B2

    公开(公告)日:2023-10-24

    申请号:US17264422

    申请日:2019-08-12

    CPC classification number: H04L25/0204 H04W56/001 H04W72/23 H04W74/0833

    Abstract: A method of performing channel estimation of a physical downlink control channel (PDCCH) in a wireless communication system is disclosed. Specifically, the method performed by a user equipment (UE) includes receiving a synchronization signal block (SSB) from a base station, receiving system information (SI) from the base station based on the SSB, transmitting a physical random access channel (PRACH) preamble to the base station, receiving a response to the PRACH preamble from the base station, transmitting UE capability information related to the channel estimation to the base station, receiving information for a PDCCH monitoring duration from the base station, and performing the channel estimation based on the information for the PDCCH monitoring duration. The UE capability information includes information for a maximum number of control channel elements (CCEs) that are capable of the channel estimation per PDCCH monitoring duration.

    Method for transmitting transport block by using downlink control information in wireless communication system and apparatus therefor

    公开(公告)号:US11432279B2

    公开(公告)日:2022-08-30

    申请号:US17047050

    申请日:2019-04-11

    Abstract: The present specification provides a method for transmitting a transport block (TB) by using downlink control information (DCI) in a wireless communication system. In particular, the method, performed by a terminal, comprises: receiving first DCI from a base station; selecting a modulation and coding scheme (MCS) table, on the basis of the first DCI; calculating a first transport block size (TBS), on the basis of at least one of a format of the first DCI and the selected MCS table; and transmitting, to the base station, a first TB according to the calculated first TBS, wherein the first TBS is the same as a second TBS of a second TB transmitted before the transmission of the first TB.

    Method and device for transmitting grant-free-based uplink data in wireless communication system

    公开(公告)号:US11265848B2

    公开(公告)日:2022-03-01

    申请号:US16478584

    申请日:2018-01-30

    Abstract: A method and a device for transmitting an uplink transmission block in a wireless communication system are provided. Particularly, a terminal receives, from a base station, allocation information on a first grant-free uplink resource, which is scheduled semi-persistently. The terminal repeatedly transmits a first transmission block through the first grant-free uplink resource by using a first reference signal. The terminal transmits a second transmission block by using a second reference signal before completion of the transmission of the first transmission block. The second transmission block is distinguished from the first transmission block through a change of the first reference signal to the second reference signal.

    Method and apparatus for handling soft buffer size with dual connectivity in wireless communication system

    公开(公告)号:US11122640B2

    公开(公告)日:2021-09-14

    申请号:US16631130

    申请日:2018-07-30

    Abstract: A method and apparatus for handling a soft buffer size in a wireless communication system is provided. It is assumed that a user equipment (UE) is connected to both a long-term evolution (LTE) system and a new radio access technology (NR) system in dual connectivity. The UE determines a first UE capability for the LTE system and a second UE capability for the NR system, determines a total soft buffer size based on the first UE capability and the second UE capability, and shares the total soft buffer size between the LTE system and the NR system based on at least one of a maximum transport block size (TBS) per transmission time interval (TTI) and a number of carriers used in the NR system.

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