公开(公告)号：US20220416953A1

公开(公告)日：2022-12-29

申请号：US17441476

申请日：2020-06-19

Applicant: Apple Inc.

Inventor： Yingyang Li ,  Yongjun Kwak

IPC: H04L1/18 ,  H04W72/12

Abstract: Methods, systems, and computer programs for enhancing HARQ-ACK timing procedure. In one aspect, a method can include encoding, by a next generation NodeB (gNB), one or more sets of physical downlink shared channels (PDSCHs) with respect to a listen before talk (LBT) operation on an unlicensed spectrum, transmitting, by the gNB, the encoded one or more sets of PDSCHs to the UE, and determining, by the gNB, scheduling for receiving a HARQ-ACK from the UE corresponding to the one or more sets of PDSCHs based on the LBT operation.

公开(公告)号：US11457474B2

公开(公告)日：2022-09-27

申请号：US16865197

申请日：2020-05-01

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：US20220191864A1

公开(公告)日：2022-06-16

申请号：US17598140

申请日：2020-07-02

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04W72/14

Abstract: The present application relates to wireless devices and components including apparatus, systems, and methods for time-domain resource allocation for configured grant transmissions in New Radio (NR) systems operating on unlicensed spectrum. In some embodiments, a user equipment may be configured with periodicity, bitmap information, duration information, or slot-offset information to facilitate the time-domain resource allocation.

公开(公告)号：US20220174721A1

公开(公告)日：2022-06-02

申请号：US17441110

申请日：2020-05-01

Applicant: Apple Inc.

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

IPC: H04W72/14 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00

Abstract: The present application relates to wireless devices, and more particularly to apparatus, systems, and methods for multiplexing Configured Grant (CG) transmissions in New Radio (NR) systems operating on unlicensed spectrum. In one embodiment, a method for signaling a wireless system is disclosed, comprising: determining, by a user equipment (UE), that a physical uplink control channel (PUCCH) overlaps with a configured grant (CG) physical uplink shared channel (PUSCH) within a PUCCH group; multiplexing uplink control information (UCI) with a CG UCI based on the determination; and transmitting, by the UE to the wireless system, the multiplexed UCI with the CG UCI.

公开(公告)号：US20220095189A1

公开(公告)日：2022-03-24

申请号：US17310955

申请日：2020-05-02

Applicant: APPLE INC.

Inventor： Rui Huang ,  Yingyang Li ,  Zhibin Yu ,  Qiming Li ,  Jie Cui ,  Yang Tang

IPC: H04W36/30 ,  H04W48/16 ,  H04W36/08 ,  H04W36/00

Abstract: A method of a user equipment (UE) performing cell re-selection in New Radio (NR) unlicensed (NR-U) idle mode includes performing cell re-selection associated with a selected public land mobile network (PLMN) in New Radio (NR) unlicensed (NR-U) idle mode. Performing cell re-selection in NR-U idle mode further comprises determining a best cell associated with the selected PLMN based on one or more measurements. At least one of the one or more measurements may comprise a channel occupancy measurement. Performing cell re-selection in NR-U idle mode further comprises camping on the best cell and periodically searching for cells that are determined to be better than the best cell based on the one or more measurements.

公开(公告)号：US12166609B2

公开(公告)日：2024-12-10

申请号：US17427498

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Yingyang Li ,  Salvatore Talarico ,  Yongjun Kwak

IPC: H04L27/00 ,  H04L5/00 ,  H04L5/14 ,  H04W74/0816 ,  H04W16/14

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for generating and using slot format indicator (SFI) and channel occupancy time (COT) structure in new radio (NR) systems operating on unlicensed spectrum. For example, some embodiments are directed to a base station that includes radio front end circuitry and processor circuitry. The processor circuitry can be configured to generate a slot format indicator (SFI) associated with a channel occupancy time (COT) structure. The SFI indicates whether one or more slots associated with the COT structure are to be used for downlink (DL) symbols, uplink (UL) symbols, or flexible symbols. The flexible symbols form one or more gaps in the COT structure in response to the flexible symbols not being overridden as a DL transmission or a UL transmission. The processor circuitry can further be configured to transmit the SFI to a user equipment (UE).

公开(公告)号：US12101187B2

公开(公告)日：2024-09-24

申请号：US17438663

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Guotong Wang ,  Gang Xiong ,  Yingyang Li ,  Alexei Davydov

IPC: H04L1/16 ,  H04L1/00 ,  H04L1/1607 ,  H04L5/00

CPC classification number: H04L1/1671 ,  H04L1/0027 ,  H04L5/0032 ,  H04L5/0051

Abstract: Systems, devices, and techniques for beamforming in wireless communication systems are described. A described technique performed by a user equipment (UE) includes monitoring a downlink reference signal from a base station; transmitting, via a physical uplink shared channel (PUSCH) associated with a hybrid automatic repeat request (HARQ) process number, a beam failure recovery request (BFRQ) in response to a change in a quality of the downlink reference signal, wherein the BFRQ comprises new beam information; receiving, by the UE, a downlink control information (DCI) message to trigger a PUSCH transmission corresponding to the HARQ process number; and transmitting, by the UE after at least a predetermined number of symbols from a last symbol of a physical downlink control channel (PDCCH) reception containing the DCI message, information via a PUCCH in accordance with the new beam information. The UE can apply the new beam information to uplink and downlink channels.

公开(公告)号：US12028867B2

公开(公告)日：2024-07-02

申请号：US17420575

申请日：2020-01-11

Applicant: Apple Inc.

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

IPC: H04W72/23 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1867

CPC classification number: H04W72/23 ,  H04L1/1614 ,  H04L1/1812 ,  H04L1/1887

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for a wireless communication on an unlicensed spectrum. An access point (AP) of the wireless communication system includes a processor circuitry, and radio front end circuitry coupled to the processor circuitry. The processor circuitry is configured to schedule multiple transmission time intervals (multi-TTIs) in a physical uplink shared channel (PUSCH) in the unlicensed spectrum. The processor circuitry is configured to generate a downlink control information (DCI) to include the scheduled multi-TTIs and a hybrid automatic repeat and request acknowledgement (HARQACK) assessment information associated with the scheduled multi-TTIs. The radio front end circuitry is configured to transmit the DCI to a user equipment (UE) over the unlicensed spectrum.

公开(公告)号：US12022512B2

公开(公告)日：2024-06-25

申请号：US17441532

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Lopamudra Kundu ,  Salvatore Talarico ,  Yingyang Li

IPC: H04W74/0816 ,  H04L1/00 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/08

CPC classification number: H04W74/0816 ,  H04L1/0068 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/0866

Abstract: Systems, devices, and techniques for listen-before-talk (LBT) operations in unlicensed spectrum are described. A described technique includes receiving, by a user equipment (UE), a downlink control information (DCI) message, the DCI message including available bandwidth information and a channel occupancy time (COT) duration, the available bandwidth information being associated with one or more LBT bandwidths of a bandwidth part (BWP) in unlicensed spectrum; receiving, by the UE, one or more physical downlink shared channel (PDSCH) transmissions in the BWP, during the COT duration; and processing the one or more PDSCH transmissions based on the available bandwidth information.

公开(公告)号：US11864229B2

公开(公告)日：2024-01-02

申请号：US17257716

申请日：2019-08-07

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Jeongho Jeon ,  Gang Xiong ,  Yingyang Li ,  Carlos Aldana

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04L1/18 ,  H04L1/1812 ,  H04W72/23

CPC classification number: H04W74/0808 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/23

Abstract: Systems and methods of adjusting contention window size (CWS) in a LBT procedure for both UL and DL unlicensed spectrum transmissions are described. The UE makes a HARQ-ACK determination for at least one code block group (CBG) of a transport block (TB) in a reference burst from a base station, determines whether the HARQ-ACK determination for the CBG meets a predetermined number of NACKs, transmits to the base station a single bit HARQ-ACK feedback for the TB that is dependent on whether the predetermined number of NACKs has been met, and receives or determines the adjusted CWS and uses the adjusted CWS for communication with the base station.