公开(公告)号：US12213180B2

公开(公告)日：2025-01-28

申请号：US17607511

申请日：2020-04-30

Applicant: Apple Inc.

Inventor： Lopamudra Kundu ,  Gang Xiong ,  Yongjun Kwak

IPC: H04W74/0833 ,  H04W16/14 ,  H04W74/0808

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.

公开(公告)号：US12177847B2

公开(公告)日：2024-12-24

申请号：US17414486

申请日：2020-01-09

Applicant: Apple Inc.

Inventor： Lopamudra Kundu ,  Gang Xiong ,  Yongjun Kwak ,  Yingyang Li

IPC: H04W72/04 ,  H04B1/713 ,  H04L1/1812 ,  H04W72/21

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for use in a wireless network for resource allocation during initial access. Some embodiments are directed to an apparatus including processor circuitry and radio front circuitry. The processor circuitry can be configured to determine, in accordance with a predetermined requirement, multiple physical resource blocks (PRBs) to be used for transmitting a physical uplink control channel (PUCCH) before a dedicated PUCCH resource configuration. The radio front end circuitry coupled with the processor circuitry can be configured to transmit the PUCCH using the determined PRBs and before the dedicated PUCCH resource configuration. The dedicated PUCCH resource configuration can include initial access before Radio Resource Control (RRC) connection setup.

公开(公告)号：US20240397548A1

公开(公告)日：2024-11-28

申请号：US18789394

申请日：2024-07-30

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Lopamudra Kundu ,  Bishwarup Mondal ,  Dae Won Lee

IPC: H04W74/00 ,  H04W74/0808

Abstract: Devices and methods of providing channel occupancy time (COT) are described. After a gNB acquires an unlicensed channel for a COT, the gNB indicates the COT length to a UE using a PDCCH having a DCI formed in accordance with DCI format 2_0. The slot format of the last slot of the COT is indicated using a reserved slot format indicator that is reserved to indicate the end of the COT. The reserved slot format indicator indicates a last slot format of available slot formats of DCI format 2_0. Dummy bits fill the DCI after the reserved slot format indicator. Alternatively, to indicate the COT length, a COT field dedicated to providing the COT is used in the DCI or the CRC is masked using a slot format indication Radio Network Temporary Identifier.

公开(公告)号：US12149463B2

公开(公告)日：2024-11-19

申请号：US17279948

申请日：2019-09-27

Applicant: Apple Inc.

Inventor： Lopamudra Kundu ,  Bishwarup Mondal ,  Gang Xiong ,  Yongjun Kwak ,  Daewon Lee

IPC: H04L5/00 ,  H04W74/0808

Abstract: The present invention discloses one or more computer-readable media comprising instructions to: determine SRS resource allocation information to configure uplink resources for an SRS, the uplink resources to include a plurality of bandwidth ranges within a sounding bandwidth; perform a LET procedure in individual bandwidth ranges of the plurality of bandwidth ranges to detect at least one bandwidth range available for the SRS; and generate the SRS for transmission within the at least one bandwidth range.

公开(公告)号：US12143846B2

公开(公告)日：2024-11-12

申请号：US18467407

申请日：2023-09-14

Applicant: APPLE INC.

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

IPC: H04W24/08 ,  H04L5/00 ,  H04W72/12 ,  H04W76/28 ,  H04W84/04 ,  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：US12069719B2

公开(公告)日：2024-08-20

申请号：US17290281

申请日：2019-11-01

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Lopamudra Kundu ,  Bishwarup Mondal ,  Dae Won Lee

IPC: H04W74/00 ,  H04W74/0808

CPC classification number: H04W74/006 ,  H04W74/0808

Abstract: Devices and methods of providing channel occupancy time (COT) are described. After a gNB acquires an unlicensed channel for a COT, the gNB indicates the COT length to a UE using a PDCCH having a DCI formed in accordance with DCI format 2_0. The slot format of the last slot of the COT is indicated using a reserved slot format indicator that is reserved to indicate the end of the COT. The reserved slot format indicator indicates a last slot format of available slot formats of DCI format 2_0. Dummy bits fill the DCI after the reserved slot format indicator. Alternatively, to indicate the COT length, a COT field dedicated to providing the COT is used in the DCI or the CRC is masked using a slot format indication Radio Network Temporary Identifier.

公开(公告)号：US11991111B2

公开(公告)日：2024-05-21

申请号：US17421791

申请日：2020-01-11

Applicant: Apple Inc.

Inventor： Bishwarup Saso Mondal ,  Prerana Rane ,  Yongjun Kwak ,  Daewon Lee

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/044

CPC classification number: H04L5/005 ,  H04B7/0695 ,  H04L5/0078 ,  H04W72/044

Abstract: Disclosed herein are system, method, and computer program product embodiments for performing Synchronization Single Block (SSB) transmission using a number of SSB beams. An embodiment operates by determining a SSB index for a SSB based on a candidate position in a set of candidate positions and the number of SSB beams. The embodiment determines a shift value for the SSB index based on the candidate position and the number of SSB beams. The embodiment determines a frame timing for the SSB based the SSB index and the shift value for the SSB index. The embodiment then transmits, by radio front end circuitry, the SSB to a user equipment (UE) based on the frame timing for the SSB.

公开(公告)号：US11902996B2

公开(公告)日：2024-02-13

申请号：US17903376

申请日：2022-09-06

Applicant: Apple Inc.

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

IPC: H04W72/23 ,  H04W72/044 ,  H04W72/12 ,  H04L1/1812 ,  H04L1/1867 ,  H04L1/08

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：US20230397252A1

公开(公告)日：2023-12-07

申请号：US18365112

申请日：2023-08-03

Applicant: Apple Inc.

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

IPC: H04W74/08 ,  H04W72/12

CPC classification number: H04W74/0808 ,  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：US11765772B2

公开(公告)日：2023-09-19

申请号：US17949983

申请日：2022-09-21

Applicant: Apple Inc.

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

IPC: H04W72/12 ,  H04W74/08

CPC classification number: H04W74/0808 ,  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.