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    PBCH content for NR unlicensed
    33.
    发明授权
    PBCH content for NR unlicensed 有权

    公开(公告)号：US11696224B2

    公开(公告)日：2023-07-04

    申请号：US17583929

    申请日：2022-01-25

    Applicant: Apple Inc.

    Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

    IPC: H04W48/16 ,  H04L5/00 ,  H04W56/00 ,  H04W72/30

    CPC classification number: H04W48/16 ,  H04L5/0048 ,  H04W56/001 ,  H04W72/30

    Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an sl-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

    Devices and methods for ELAA multi-carrier LBT
    34.
    发明授权
    Devices and methods for ELAA multi-carrier LBT 有权

    公开(公告)号：US11606817B2

    公开(公告)日：2023-03-14

    申请号：US16321812

    申请日：2017-05-10

    Applicant: Apple Inc.

    Inventor： Jeongho Jeon ,  Abhijeet Bhorkar ,  Seunghee Han ,  Hwan-Joon Kwon

    IPC: H04W74/08 ,  H04W74/00 ,  H04L1/1812

    Abstract: Devices, methods, user equipment (UE), evolved node B (eNB), and storage media are described suitable for coexistence operations for uplink communications on multiple unlicensed carriers. Various embodiments are implemented in LTE systems with license-assisted access (LAA) associated communications. In one embodiment, a UE processes one or more uplink grants from an eNB scheduling transmissions on multiple unlicensed carriers at a first time, and indicating a first channel access procedure. The UE then selects a first unlicensed carrier and performs the first channel access procedure, and performs a second channel access procedure on a second unlicensed carrier of the multiple unlicensed carriers.

    Collision Handling of Reference Signals
    37.
    发明申请
    Collision Handling of Reference Signals 有权

    公开(公告)号：US20220190987A1

    公开(公告)日：2022-06-16

    申请号：US17689229

    申请日：2022-03-08

    Applicant: Apple Inc.

    Inventor： Debdeep Chatterjee ,  Alexei Vladimirovich Davydov ,  Seung Hee Han ,  Jeongho Jeon ,  Sameer Pawar ,  Avik Sengupta ,  Guotong Wang ,  Yushu Zhang

    IPC: H04L5/00 ,  H04L1/18

    Abstract: A user equipment (UE) can include processing circuitry configured to decode control information of a physical down-in link control channel (PDCCH) received via a resource within a control resource set (CORESET) occupying a subset of a plurality of e OFDM symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a PDSCH. The DM-RS can be detected within the slot, the DM-RS starting at a symbol 01 location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data scheduled by the
    PDCCH and received via the PDSCH can be decoded, where the decoding is based on the detected DM-RS.

    Contention window size adaptation
    39.
    发明授权
    Contention window size adaptation 有权

    公开(公告)号：US11251907B2

    公开(公告)日：2022-02-15

    申请号：US16921357

    申请日：2020-07-06

    Applicant: Apple Inc.

    Inventor： Hong He ,  Hwan-Joon Kwon ,  Seunghee Han ,  Abhijeet Bhorkar ,  Jeongho Jeon

    IPC: H04L1/16 ,  H04L1/18 ,  H04W74/08 ,  H04L1/00 ,  H04W76/28 ,  H04W16/14 ,  H04W88/08

    Abstract: Techniques for contention window size (CWS) adaptation (CWSA) are discussed. One example apparatus can comprise a processor that can receive HARQ messages UEs in response to PDSCH transmissions in one or more reference subframes. The HARQ messages can comprise HARQ-ACK values that denote a HARQ-ACK state for a transport block associated with License Assisted Access (LAA) operation, wherein each of the HARQ-ACK states is one of a DTX state, an ACK state, a NACK state, or an “any” state. The processor can also; determine a metric value for each of the HARQ-ACK states; calculate a CWS adjustment metric based on the determined metric values; increase a CWS to a next higher allowed value when the CWS adjustment metric is greater than or equal to a threshold; and reset the CWS to a minimum allowed value when the CWS adjustment metric is less than the threshold.

    Timing advance for grantless uplink transmission
    40.
    发明授权
    Timing advance for grantless uplink transmission 有权

    公开(公告)号：US11224023B2

    公开(公告)日：2022-01-11

    申请号：US16648653

    申请日：2018-07-13

    Applicant: Apple Inc.

    Inventor： Huaning Niu ,  Jeongho Jeon ,  Wenting Chang ,  Jinyu Zhang ,  Salvatore Talarico

    IPC: H04W56/00 ,  H04W74/08 ,  H04W80/08

    Abstract: Described is an apparatus of an Evolved Node-B (eNB) operable to communicate with a User Equipment (UE) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to determine a first Timing Advance (TA) for Scheduled Uplink (SUL) transmission. The circuitry may also be operable to determine a second TA for Grantless Uplink (GUL) transmission. The second circuitry may be operable to generate an SUL transmission for transmission at a timing based upon the first TA. The second circuitry may also be operable to generate a GUL transmission for transmission at a timing based upon the second TA.

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