公开(公告)号：US12089253B2

公开(公告)日：2024-09-10

申请号：US17430847

申请日：2020-02-16

Applicant: Apple Inc.

Inventor： Jose Armando Oviedo ,  Yingyang Li ,  Salvatore Talarico ,  Yongjun Kwak

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/0816

CPC classification number: H04W74/0816 ,  H04W72/0446 ,  H04W74/004 ,  H04W74/006 ,  H04W74/0866

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for a shared channel occupancy time (COT) procedure in a wireless channel of unlicensed spectrum. The shared COT can be utilized among one or more user equipment (UE) and a 5G Node B (gNB). A UE contends for access to the channel to acquire the COT, and transmits in the uplink (UL) according to the UEs time-domain configuration. When the UL transmission does not utilize the entire COT, the UE can signal to the gNB that the COT can be shared. In particular, the UE transmits an indication of a COT boundary that the gNB can use to determine when to transmit DL data in the shared COT. The COT can also be shared between two or more UEs in addition to the gNB.

公开(公告)号：US20240172147A1

公开(公告)日：2024-05-23

申请号：US18534181

申请日：2023-12-08

Applicant: APPLE INC.

Inventor： Yang Tang ,  Dae Won Lee ,  Prerana Rane ,  Bishwarup Mondal ,  Jiwoo Kim ,  Yongjun Kwak ,  Seunghee Han

IPC: H04W56/00 ,  H04L27/26

CPC classification number: H04W56/001 ,  H04L27/26025 ,  H04L27/2607

Abstract: Systems and methods for determining channel raster(s) and synchronization signal raster(s) for New Radio (NR) unlicensed spectrum are disclosed herein. For each of a plurality of data objects an NR channel raster position is determined using Absolute Radio Frequency Channel Number (NR-ARFCN) numbers. For each corresponding NR channel, Global Synchronization Channel Numbers (GSCNs), a number of Physical Resource Blocks (PRBs) based on channel subcarrier spacing (SCS), NR channel raster position placement, channel edges, synchronization signal and physical broadcast channel (SSB) edges, and an SSB raster position are calculated. The plurality of data objects may then be down selected based on e.g., corresponding Long Term Evolution (LTE) channel raster positions and/or entries of a second plurality of data objects calculated for NR channels that use a second SCS.

公开(公告)号：US20240163886A1

公开(公告)日：2024-05-16

申请号：US18404410

申请日：2024-01-04

Applicant: Apple Inc.

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

IPC: H04W72/23 ,  H04L1/1812 ,  H04L1/1867 ,  H04W72/044 ,  H04W72/12

CPC classification number: H04W72/23 ,  H04L1/1812 ,  H04L1/1887 ,  H04L1/1896 ,  H04W72/044 ,  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.

公开(公告)号：US11974364B2

公开(公告)日：2024-04-30

申请号：US16500772

申请日：2018-05-03

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Debdeep Chatterjee ,  Alexey Khoryaev ,  Sergey Panteleev ,  Hong He ,  Yushu Zhang ,  Yongjun Kwak

IPC: H04W88/06 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1829 ,  H04L1/1867 ,  H04L5/00 ,  H04W24/08 ,  H04W72/0446

CPC classification number: H04W88/06 ,  H04L1/0013 ,  H04L1/0061 ,  H04L1/1664 ,  H04L1/1819 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0055 ,  H04W24/08 ,  H04W72/0446

Abstract: Described is an apparatus of a User Equipment (UE). The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to process one or more configuration transmissions from the gNB carrying a rule for Uplink (UL) collisions and process a first Downlink (DL) transmission and a second DL transmission. The second circuitry may be operable to identify a first UL transmission for the first DL transmission and a second UL transmission for the second DL transmission, the first UL transmission overlapping with the second UL transmission in at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The third circuitry may be operable to generate at least one of the first UL transmission and the second UL transmission in accordance with the rule for UL collisions.

公开(公告)号：US11805432B2

公开(公告)日：2023-10-31

申请号：US17643538

申请日：2021-12-09

Applicant: APPLE INC.

Inventor： Yongjun Kwak ,  Gang Xiong ,  Hong He ,  Yujian Zhang ,  Debdeep Chatterjee ,  Honglei Miao ,  Bharat Shrestha

IPC: H04W24/08 ,  H04L5/00 ,  H04W76/28 ,  H04W72/12 ,  H04W84/04 ,  H04W88/02

CPC classification number: H04W24/08 ,  H04L5/0053 ,  H04L5/0048 ,  H04L5/0091 ,  H04W72/12 ,  H04W76/28 ,  H04W84/042 ,  H04W88/02

Abstract: Technology for a user equipment (UE), operable for monitoring a physical downlink control channel (PDCCH) is disclosed. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein the predetermined monitoring occasion has a periodicity of P slots or P symbols with an offset Os. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein Os has an offset with respect to a first slot in subframe number zero (SFN #0). The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein P is a positive integer greater than zero.

公开(公告)号：US11778657B2

公开(公告)日：2023-10-03

申请号：US16171998

申请日：2018-10-26

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seunghee Han ,  Gang Xiong ,  Gregory V. Morozov ,  Yushu Zhang ,  Joonyoung Cho ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W74/00 ,  H04L5/00 ,  H04W74/08

CPC classification number: H04W74/006 ,  H04L5/0091 ,  H04W74/0833

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth-generation Evolved Node-B (gNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a message comprising an indicator to indicate a number of contention based physical random access channel (PRACH) preambles within a PRACH occasion per Synchronization Signal Block (SSB). The second circuitry may be operable to generate a first PRACH occasion, based on the indicator.

公开(公告)号：US20230119172A1

公开(公告)日：2023-04-20

申请号：US17897281

申请日：2022-08-29

Applicant: Apple Inc.

Inventor： Honglei Miao ,  Yushu Zhang ,  Yongjun Kwak ,  Dae Won Lee ,  Gregory V. Morozov ,  Seung Hee Han

IPC: H04W52/36 ,  H04W76/27 ,  H04L5/00 ,  H04W16/28 ,  H04W56/00 ,  H04W74/08 ,  H04W88/06 ,  H04W88/10 ,  H04B7/06 ,  H04W72/044 ,  H04W72/23

Abstract: Techniques discussed herein can facilitate power ramping of PRACH (Physical Random Access Channel), for example, in connection with change of best gNB (next generation Node B) Tx (Transmit) beam and/or dynamic beam switching for control and/or data channels. Power ramping techniques discussed herein can comprise techniques for determining at least one of a power ramping counter or power offset for PRACH in connection with a change in best DL (Downlink) Tx (Transmit) beam. Dynamic beam switching techniques discussed herein can comprise employing DCI comprising at least one beam indication field indicating a beam index of a new beam of a BPL (Beam Pair Link) for at least one of a data channel or a control SS (Search Space).

公开(公告)号：US20230023632A1

公开(公告)日：2023-01-26

申请号：US17949983

申请日：2022-09-21

Applicant: Apple Inc.

Inventor： Carlos H. Aldana ,  Yongjun Kwak ,  Yingyang Li ,  Salvatore Talarico

IPC: H04W74/08 ,  H04W72/12

Abstract: Methods and apparatus are disclosed for a UE and its serving base station in 5G NR systems to signal channel scan or channel sensing to allow channel occupancy time (COT) sharing before transmissions. The COT sharing may be initiated by the base station or by the UE by asserting a CCA indication to enable channel sensing by a UE or base station, respectively. When the UE receives and decodes the asserted CCA indication during downlink transmission, the UE may perform channel sensing during a short interframe space (SIFS) between the downlink transmission and a scheduled uplink transmission. When the UE detects that the sensed RF energy across an intended transmission band is greater than an energy detect threshold, the UE may refrain from transmitting during the scheduled uplink transmission. Otherwise, or when the CCA indication is de-asserted, the UE may transmit during the scheduled uplink transmission without performing channel sensing.

公开(公告)号：US11490417B2

公开(公告)日：2022-11-01

申请号：US16924123

申请日：2020-07-08

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Yongjun Kwak ,  Yingyang Li ,  Carlos H. Aldana

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/12 ,  H04W88/08

Abstract: Apparatuses, systems, and methods are disclosed for frame based equipment (FBE) framework for new radio (NR) systems operating on the unlicensed spectrum. A processor for a base station performs a first clear channel assessment (CCA) using Category-1 (CAT-1) or CAT-2 listen-before-talk (LBT) on an unlicensed spectrum. The processor transmits first downlink (DL) data to one or more user equipments (UEs) within a fixed frame period (FFP) in accordance with a frame based equipment (FBE) framework for new radio (NR) on the unlicensed spectrum. The base station operates as an initiating device and the one or more UEs operate as responding devices. The processor performs a second CCA responsive to a gap of X orthogonal frequency-division multiplexing (OFDM) symbols between a DL burst and an uplink (UL) burst being greater than a threshold gap. The processor transmits second DL data within the FFP responsive to performing the second CCA.

公开(公告)号：US20220225422A1

公开(公告)日：2022-07-14

申请号：US17607511

申请日：2020-04-30

Applicant: Apple Inc.

Inventor： Lopamudra Kundu ,  Gang Xiong ,  Yongjun Kwak

IPC: H04W74/08 ,  H04W16/14

Abstract: Systems, methods, and circuitries are provided for adjusting random access channel occasions support operation in unlicensed spectrum. In one example, a method includes determining a set of preconfigured random access channel (RACH) occasions (ROs) that includes a plurality of successive ROs; deriving an set of adjusted ROs by inserting a time gap between ROs in the set of preconfigured ROs; and transmitting a physical random access channel (PRACH) preamble in at least one RO in the set of adjusted ROs.