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    Devices and methods for ELAA multi-carrier LBT
    62.
    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.

    Hybrid Automatic Repeat Request (HARQ) Based on Codeblock Groups in New Radio Systems
    64.
    发明申请
    Hybrid Automatic Repeat Request (HARQ) Based on Codeblock Groups in New Radio Systems 有权

    公开(公告)号：US20230007636A1

    公开(公告)日：2023-01-05

    申请号：US17903457

    申请日：2022-09-06

    Applicant: Apple Inc.

    Inventor： Hong He ,  Debdeep Chatterjee ,  Gang Xiong ,  Hwan-Joon Kwon ,  Sergey Sosnin ,  Yongjun Kwak

    IPC: H04W72/04 ,  H04L1/18 ,  H04W72/12 ,  H04L1/08

    Abstract: Embodiments of a User Equipment (UE), Generation Node-B (gNB) and methods of communication are disclosed herein. The UE may receive a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a slot, and on a component carrier (CC) of a plurality of CCs, The PDCCH may include a total downlink assignment index (DAI) and a counter DAI for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH. The total DAI may indicate a total number of pairs of CCs and slots for the HARQ-ACK feedback. The UE may encode the HARQ-ACK feedback to include a bit that indicates whether the PDSCH is successfully decoded. A size of the HARQ-ACK feedback may be based on the total DAI, and a position of the bit may be based on the counter DAI.

    Hybrid automatic repeat request (HARQ) based on codeblock groups in new radio systems
    65.
    发明授权
    Hybrid automatic repeat request (HARQ) based on codeblock groups in new radio systems 有权

    公开(公告)号：US11464002B2

    公开(公告)日：2022-10-04

    申请号：US16990629

    申请日：2020-08-11

    Applicant: Apple Inc.

    Inventor： Hong He ,  Debdeep Chatterjee ,  Gang Xiong ,  Hwan-Joon Kwon ,  Sergey Sosnin ,  Yongjun Kwak

    IPC: H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04L1/08

    Abstract: Embodiments of a User Equipment (UE), Generation Node-B (gNB) and methods of communication are disclosed herein. The UE may receive a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH) in a slot, and on a component carrier (CC) of a plurality of CCs. The PDCCH may include a total downlink assignment index (DAI) and a counter DAI for hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback of the PDSCH. The total DAI may indicate a total number of pairs of CCs and slots for the HARQ-ACK feedback. The UE may encode the HARQ-ACK feedback to include a bit that indicates whether the PDSCH is successfully decoded. A size of the HARQ-ACK feedback may be based on the total DAI, and a position of the bit may be based on the counter DAI.

    Contention window size adaptation
    66.
    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.

    User equipment (UE), evolved node-b (eNB) and methods for dynamic hybrid automatic repeat request (HARQ)
    68.
    发明授权
    User equipment (UE), evolved node-b (eNB) and methods for dynamic hybrid automatic repeat request (HARQ) 有权

    公开(公告)号：US11013063B2

    公开(公告)日：2021-05-18

    申请号：US16408016

    申请日：2019-05-09

    Applicant: Apple Inc.

    Inventor： Hwan-Joon Kwon ,  Gang Xiong ,  Hong He

    IPC: H04W4/00 ,  H04W88/06 ,  H04L1/18 ,  H04L1/00 ,  H04W76/27 ,  H04W72/04 ,  H04W80/02 ,  H04L5/00

    Abstract: Embodiments of a User Equipment (UE), Evolved Node-B (eNB) and methods for communication are generally described herein. The UE may receive downlink control information (DCI) that schedules a transport block (TB) that includes multiple code blocks. The UE may determine a transport block size (TBS) based on the DCI. The UE may attempt to decode the code blocks. The UE may, if the TBS is greater than a predetermined threshold: bundle the code blocks into code block groups for hybrid automatic repeat request (HARQ) acknowledgement; and transmit a HARQ bit per code block group. The UE may, if the TBS is less than or equal to the threshold, transmit a HARQ bit that indicates whether a decode failure has occurred for at least one of the code blocks of the TB.

    CHANNEL STATE INFORMATION (CSI) MEASUREMENTS AND CSI REPORTING IN LICENSED ASSISTED ACCESS (LAA)
    69.
    发明申请
    CHANNEL STATE INFORMATION (CSI) MEASUREMENTS AND CSI REPORTING IN LICENSED ASSISTED ACCESS (LAA) 有权

    公开(公告)号：US20210067996A1

    公开(公告)日：2021-03-04

    申请号：US16994965

    申请日：2020-08-17

    Applicant: Apple Inc.

    Inventor： Abhijeet Bhorkar ,  Hwan-Joon Kwon ,  Jeongho Jeon ,  Qiaoyang Ye

    IPC: H04W24/10 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/00

    Abstract: Techniques for channel state information (CSI) reporting are discussed. One example apparatus at a user equipment can derive, for one or more subframes of a license assisted access (LAA) secondary cell (SCell), one or more channel measurements based on reference signals (e.g., cell-specific reference signals (CRS) or CSI reference signals (CSI-RS)), in those subframes; generate CSI that comprises a channel quality indicator (CQI) based on an average of the one or more channel measurements from multiple subframes comprising a first subframe and a later second subframe, wherein each orthogonal frequency division multiplexing (OFDM) symbol of a second slot of the first subframe is occupied, wherein each of a first three OFDM symbols of the second subframe are occupied, and wherein each OFDM symbol between the first subframe and the second subframe is occupied; and generate a CSI report that indicates the set of CSI parameters.

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