公开(公告)号：US12132551B2

公开(公告)日：2024-10-29

申请号：US17442456

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Haitong Sun ,  Yakun Sun ,  Weidong Yang ,  Wei Zeng ,  Dawei Zhang ,  Rohit U. Nabar

IPC: H04B7/00 ,  H04B7/06 ,  H04W8/24

CPC classification number: H04B7/0695 ,  H04W8/24

Abstract: Methods and apparatuses are disclosed for performing fast beam tracking in a wireless communication environment. A UE signals to a gNB its capabilities for intra-symbol beam sweeping. Depending on configuration, the UE can either assume that the intra-symbol beam sweeping configuration will be implemented, or will await a response from the gNB before implementing intra-symbol beam sweeping. Although this is generally carried out during initial access between the UE and the gNB, the beam sweeping configuration can be dynamically updated by either the UE or the gNB during established communication. For example, the UE can signal a desired change via its MAC CE, and the gNB can signal its change to the UE via DCI.

公开(公告)号：US12107795B2

公开(公告)日：2024-10-01

申请号：US17760551

申请日：2019-09-29

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Haitong Sun ,  Dawei Zhang ,  Haijing Hu ,  Wei Zeng ,  Hong He ,  Chunhai Yao ,  Yuchul Kim ,  Yuqin Chen ,  Fangli Xu ,  Yakun Sun

IPC: H04L5/00

CPC classification number: H04L5/006 ,  H04L5/0094

Abstract: To reduce the beam reporting latency, a base station may include a sounding reference signal (SRS) indication to a wireless communication device (UE) as part of the transmission configuration information (TCI) transmitted to the UE, allowing the UE to receive a corresponding downlink signal using the same beam (or with the same beam) the UE used to transmit (or with which the UE transmitted) the SRS indicated in the TCI. The SRS may be one of multiple SRSs previously transmitted by the UE. The UE may transmit the multiple SRSs periodically and/or according to semi-persistent scheduling, or it may transmit them aperiodically. Therefore, the UE does not need to report the beam quality, and the base station may perform the necessary beam measurement(s) instead. Various parameters and conditions may be defined for the UE to support SRS-based TCI.

公开(公告)号：US20230142210A1

公开(公告)日：2023-05-11

申请号：US17950849

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Parvathanathan Subrahmanya ,  Sharad Sambhwani ,  Dirk Nickisch ,  Madhukar K Shanbhag ,  Rohit U Nabar ,  Sanjeevi Balasubramanian ,  Shiva Krishna Narra ,  Sriram Subramanian ,  Tarik Tabet ,  Vishwanth Kamala Govindaraju ,  Yakun Sun

IPC: H04W48/12 ,  H04L5/00

CPC classification number: H04W48/12 ,  H04L5/0048

Abstract: User equipment in close proximity may transfer data and control information. For example, the user equipment may exchange data or data sets between each other. Each user equipment can receive and transmit data using radio access technologies. A group of user equipments may include active user equipment and passive user equipment. Active user equipment connects with one or more base stations and transfers data on a wireless communication network via the base station. The active user equipment may communicate with other active user equipment and passive user equipment. Passive user equipment may not connect to any base station and/or the wireless communication network and may communicate with other passive user equipment and active user equipment (e.g., via a sidelink, peer-to-peer, or device-to-device channel).

公开(公告)号：US20230110967A1

公开(公告)日：2023-04-13

申请号：US16978559

申请日：2019-09-06

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Wei Zeng ,  Dawei Zhang ,  Yuchul Kim ,  Hong He ,  Yuqin Chen ,  Yushu Zhang ,  Sohrab Emami-Neyestanak ,  Michael Gordon ,  Mark G Forbes ,  Xiang Guan ,  Yakun Sun

IPC: H04W16/28 ,  H04W8/22

Abstract: Apparatuses, systems, and methods for a wireless device and a cellular base station to support common analog beam steering for band groups. The wireless device may provide an indication of analog beam steering capability of the wireless device to the cellular base station. For example, the wireless device may support a limited number of analog beams for each of one or more band groups. The cellular base station may select beam configuration information for the wireless device based at least in part on the indication of analog beam steering capability of the wireless device. This may include selecting a common beam for multiple component carriers for the wireless device based on the wireless device’s analog beam steering capability. The cellular base station may provide the beam configuration information to the wireless device.

公开(公告)号：US20230080785A1

公开(公告)日：2023-03-16

申请号：US17878863

申请日：2022-08-01

Applicant: Apple Inc.

Inventor： Yakun Sun ,  Rohit U. Nabar ,  Mithat C. Dogan ,  Parvathanathan Subrahmanya ,  Han Yan ,  Louay Jalloul

IPC: H04B7/08 ,  H04B7/0426 ,  H04B7/06

Abstract: The present application relates to devices and components including apparatus, systems, and methods for determining a beam for communication between a user equipment and a base station. For example, angle of arrival estimates may be utilized for determining the beam for communication.

公开(公告)号：US20220386405A1

公开(公告)日：2022-12-01

申请号：US17877601

申请日：2022-07-29

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Dawei Zhang ,  Haijing Hu ,  Haitong Sun ,  Hong He ,  Wei Zeng ,  Yakun Sun ,  Yuchul Kim

IPC: H04W76/18 ,  H04W76/19 ,  H04W72/12 ,  H04W74/08 ,  H04W8/24 ,  H04W72/14

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to transmit an indication of a link failure on a secondary cell. The indication may be transmitted on resources selected based on one or more conditions. One or more priority rules may be used to resolve collisions. The UE may further make an assumption of a beam or beams to use for communications with the secondary cell following the link failure and prior to receiving an indication from the network of a selected beam.

公开(公告)号：US20220369123A1

公开(公告)日：2022-11-17

申请号：US17438873

申请日：2021-01-14

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Haitong Sun ,  Wei Zeng ,  Dawei Zhang ,  Weidong Yang ,  Yakun Sun ,  Qiming Li ,  Jie Cui ,  Hong He ,  Chunhai Yao

IPC: H04W16/28 ,  H04W24/10 ,  H04B17/336

Abstract: Apparatuses, systems, and methods for beam reporting to facilitate multiple transmission and reception points, multi-TRPs, transmission schemes. A UE may receive, from a base station a configuration to report a beam quality based on at least one of a first reporting scheme and a second reporting scheme or a configuration of measurement resources for each TRP of a plurality of TRPs. The UE may report the beam quality based on the configuration or L1 measurements for multiple beam pairs and a recommended and/or assumed transmission scheme based on the configured measurement resources. The first reporting scheme may include the UE reporting at least one L1 measurement for multiple beams and the second reporting scheme may include the UE reporting at least one L1 measurement for multiple beam pairs. The recommended and/or assumed transmission scheme may be a non-coherent-joint transmission (NC-JT) transmission scheme and/or a single frequency network (SFN) transmission scheme.

公开(公告)号：US20220302973A1

公开(公告)日：2022-09-22

申请号：US17598226

申请日：2021-06-14

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Dawei Zhang ,  Haitong Sun ,  Rohit U. Nabar ,  Wei Zeng ,  Weidong Yang ,  Yakun Sun

IPC: H04B7/06 ,  H04W8/24

Abstract: The present application relates to devices and components including apparatus, systems, and methods to provide beamforming scheme selection and signaling in wireless communication systems.

公开(公告)号：US11451361B2

公开(公告)日：2022-09-20

申请号：US17023342

申请日：2020-09-16

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yakun Sun ,  Fangli Xu ,  Yuqin Chen ,  Dawei Zhang ,  Haijing Hu ,  Chunhai Yao ,  Yuchul Kim ,  Hong He ,  Wei Zeng ,  Haitong Sun

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

Abstract: A wireless user equipment (UE) may employ any of various mechanisms for reporting signal quality measurements to a wireless network. The UE may impose a time delay between measurement and reporting, based on a delay parameter K. The UE may average measurements obtained at different measurement instances. The UE may employ any of various schemes for prioritizing transmission of one type of report over another, when temporal collisions occur between different types of report. The UE may employ a differential report that includes a state for indicating that a beam is not workable. The UE may employ a beam index that includes a state for indicating an invalid beam. A base station may receive a signal quality report and determine workability of a beam, e.g., by triggering a report of channel state information.

公开(公告)号：US11445563B2

公开(公告)日：2022-09-13

申请号：US16931254

申请日：2020-07-16

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Dawei Zhang ,  Haijing Hu ,  Haitong Sun ,  Hong He ,  Wei Zeng ,  Yakun Sun ,  Yuchul Kim

IPC: H04W72/14 ,  H04W76/18 ,  H04W76/19 ,  H04W72/12 ,  H04W74/08 ,  H04W8/24

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to transmit an indication of a link failure on a secondary cell. The indication may be transmitted on resources selected based on one or more conditions. One or more priority rules may be used to resolve collisions. The UE may further make an assumption of a beam or beams to use for communications with the secondary cell following the link failure and prior to receiving an indication from the network of a selected beam.