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    INITIAL ACCESS AND CHANNEL ACCESS IN NEW RADIO/NEW RADIO-UNLICENSED (NR/NR-U)
    71.
    发明公开
    INITIAL ACCESS AND CHANNEL ACCESS IN NEW RADIO/NEW RADIO-UNLICENSED (NR/NR-U) 审中-公开

    公开(公告)号：US20240057149A1

    公开(公告)日：2024-02-15

    申请号：US18494118

    申请日：2023-10-25

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Chunxuan Ye

    IPC: H04W74/00 ,  H04W56/00 ,  H04W74/08 ,  H04W72/30

    CPC classification number: H04W74/008 ,  H04W56/001 ,  H04W74/0833 ,  H04W72/30

    Abstract: Methods, systems, and devices for addressing collisions of possible random access channel (RACH) occasions. A wireless transmit receive unit (WTRU) may receive an indication of semi-static UL/DL information including configuration of RACH occasions in a remaining minimum system information (RMSI) and an indication of one or more actually transmitted synchronization signal (SS) blocks. The WTRU may then assess whether there are RACH occasions based on the configuration information and determine whether any of the RACH occasions are valid, wherein the RACH occasion may be valid based on Based on the RACH occasion is after all actually transmitted SS blocks indicated and/or whether an SS block override is disabled or enabled. The WTRU may transmit a RACH in one or more of the RACH occasions that have been determined to be valid.

    BEAM MANAGEMENT FOR MULTI-TRP
    74.
    发明公开
    BEAM MANAGEMENT FOR MULTI-TRP 审中-公开

    公开(公告)号：US20230344469A1

    公开(公告)日：2023-10-26

    申请号：US18141686

    申请日：2023-05-01

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Wei Chen ,  Fengjun Xi ,  Kyle Jung-Lin Pan

    IPC: H04B7/0408 ,  H04B7/0404 ,  H04B7/06

    CPC classification number: H04B7/0408 ,  H04B7/0404 ,  H04B7/0617 ,  H04W88/02

    Abstract: Methods and apparatus for beam management are disclosed. A WTRU may include a plurality of antenna panels, each antenna panel comprising a plurality of antennas configured to transmit on directional transmit (TX) beams. The WTRU may send, to a transmission reception point (TRP), antenna panel capability information for the plurality of antenna panels and receive a reference signal (RS) configuration for configuring RS resource sets. The WTRU may send an RS transmission trigger frame identifying triggered RS resource sets from the configured RS resource sets. The WTRU may identify a set of antenna panels to be used with the triggered RS resource sets. The WTRU may determine an UL TX beam sweeping mode and an association between the triggered RS resources sets and the set of antenna panels. The WTRU may perform UL beam sweeping using the triggered RS resource sets and associated set of antenna panels.

    Error check-based synchronization and broadcast channel
    75.
    发明授权
    Error check-based synchronization and broadcast channel 有权

    公开(公告)号：US11777648B2

    公开(公告)日：2023-10-03

    申请号：US17234271

    申请日：2021-04-19

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi

    IPC: H04L1/00 ,  H04J11/00 ,  H04L69/324 ,  H04L5/00

    CPC classification number: H04L1/0061 ,  H04J11/0073 ,  H04J11/0076 ,  H04L1/0072 ,  H04L5/0053 ,  H04L69/324

    Abstract: Systems, methods, and instrumentalities are disclosed for error check-based synchronization. Physical Broadcast Channel (PBCH) data may be determined. A scrambling (e.g., a first scrambling) of the PBCH data may be scrambled via a sequence (e.g., a first sequence). The first sequence may be based on a cell ID and/or timing information. Error check bits may be attached to the scrambled PBCH data and to the timing information. The error check bits may include one or more cyclic redundancy check (CRC) bits. The scrambled PBCH data, the timing information (e.g., the unscrambled timing information), and/or the attached error check bits may be polar encoded. The polar encoding may result in polar encoded bits. A scrambling (e.g., a second scrambling) of the polar encoded bits may be scrambled via a sequence (e.g., a second sequence). The first sequence and the second sequence may be different. The polar encoded bits may be transmitted.

    Physical random access for NR-U
    77.
    发明授权
    Physical random access for NR-U 有权

    公开(公告)号：US11706794B2

    公开(公告)日：2023-07-18

    申请号：US16535140

    申请日：2019-08-08

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  HaoHao Qin ,  Chunxuan Ye

    IPC: H04W74/00 ,  H04W48/10 ,  H04B17/327 ,  H04W74/08 ,  H04W56/00

    CPC classification number: H04W74/006 ,  H04B17/327 ,  H04W48/10 ,  H04W56/0015 ,  H04W74/0808

    Abstract: Systems, methods, and instrumentalities are disclosed herein associated with physical random access, e.g., for new radio (NR) implementations such as NR-unlicensed (NR-U). A wireless transmit/receive unit (WTRU) may switch a position of a PRACH occasion (RO) with another RO to reduce latency (e.g., so that a WTRU can transmit a preamble without performing a LBT operation). Systems, methods, and instrumentalities are disclosed for reserving a listen-before-talk (LBT) procedure gap at the beginning of a random access channel (RACH) occasion (RO) in New Radio (NR) unlicensed (NR-U) systems. The present systems, methods, and instrumentalities may (e.g., may also) be applied to consecutive ROs. This may include reserving a LBT gap for example, for a RO transmission (e.g., for each of the consecutive ROs). Low latency RACH for NR-U systems may be supported (e.g., mapping rules for the RO may be implemented).

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