公开(公告)号：US20220174739A1

公开(公告)日：2022-06-02

申请号：US17441532

申请日：2020-05-01

Applicant: Apple Inc.

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

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04L1/00

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：US20220158766A1

公开(公告)日：2022-05-19

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 ,  H04L5/00 ,  H04L1/00

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：US20210014891A1

公开(公告)日：2021-01-14

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

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：US12261671B2

公开(公告)日：2025-03-25

申请号：US18486249

申请日：2023-10-13

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32 ,  H04L27/26

Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signals with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.

公开(公告)号：US12199730B2

公开(公告)日：2025-01-14

申请号：US18479957

申请日：2023-10-03

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32 ,  H04L27/26

Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with BFR multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signal with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.

公开(公告)号：US12114325B2

公开(公告)日：2024-10-08

申请号：US17606570

申请日：2020-05-04

Applicant: APPLE INC.

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

IPC: H04W72/23 ,  H04W16/14 ,  H04W74/0808

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

Abstract: Techniques discussed herein can facilitate determine of Uplink (UL) resources for New Radio (NR) operation in unlicensed spectrum (NR-U). One example embodiment is an apparatus employable by a UE comprising one or more processors configured to: process at least one bitmap via Radio Resource Control (RRC) signaling, wherein each bitmap of the at least one bitmap comprises X bits, wherein X is an integer greater than one; and determine, based at least on the at least one bitmap, for each time resource of at least one Configured Grant (CG) period, whether that time resource is configured for Uplink (UL) transmission via an unlicensed carrier, wherein each CG period of the at least one CG period comprises P time resources, wherein P is an integer greater than one.

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：US11991003B2

公开(公告)日：2024-05-21

申请号：US17415845

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Gang Xiong ,  Yingyang Li ,  Carlos H. Aldana

IPC: H04L1/1829 ,  H04L1/1812 ,  H04W74/0816

CPC classification number: H04L1/1854 ,  H04L1/1812 ,  H04L1/1832 ,  H04W74/0816

Abstract: Apparatuses, systems, and methods for performing contention window size updates for code block group based retransmission configurations in a wireless communication system. A code block group based wireless communication may be performed in unlicensed spectrum. A reference burst of the code block group based wireless communication may be identified. One or more of a number of acknowledgements or a number of negative acknowledgements associated with the reference burst may be identified. A contention window size adjustment may be determined based at least in part on one or more of the number of acknowledgements or the number of negative acknowledgements associated with the reference burst.

公开(公告)号：US20240113762A1

公开(公告)日：2024-04-04

申请号：US18486249

申请日：2023-10-13

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32

CPC classification number: H04B7/0695 ,  H04L5/0051 ,  H04L5/0055 ,  H04W52/281 ,  H04W52/325 ,  H04L27/2602

Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signals with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.

公开(公告)号：US20240030995A1

公开(公告)日：2024-01-25

申请号：US18479957

申请日：2023-10-03

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32

CPC classification number: H04B7/0695 ,  H04L5/0051 ,  H04L5/0055 ,  H04W52/281 ,  H04W52/325 ,  H04L27/2602

Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with BFR multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signal with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.