公开(公告)号：US11152994B1

公开(公告)日：2021-10-19

申请号：US16884762

申请日：2020-05-27

Applicant: Apple Inc.

Inventor： Weidong Yang ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Ismael Gutierrez Gonzalez ,  Wei Zeng ,  Wei Zhang ,  Yuchul Kim ,  Yushu Zhang

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0413

Abstract: The systems, methods, and apparatuses can receive one or more communication signals traversing through a communication channel. The systems, methods, and apparatuses can estimate one or more known parameters, characteristics, and/or attributes of the communication channel, for example, scattering, fading, and/or power decay over distance, through a process referred to as channel estimation. The systems, methods, and apparatuses can develop various channel coefficients, for example, amplitudes and/or phases, describing the channel response of the communication channel at discrete intervals of time, also referred to as taps. The systems, methods, and apparatuses can assign taps to various priorities and, thereafter, utilize these priorities to selectively include their corresponding channel coefficients in a CSI report or exclude their corresponding channel coefficients from the CSI report.

公开(公告)号：US20210321403A1

公开(公告)日：2021-10-14

申请号：US17215162

申请日：2021-03-29

Applicant: APPLE INC.

Inventor： Chunxuan Ye ,  Dawei Zhang ,  Oghenekome Oteri ,  Wei Zeng ,  Weidong Yang

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00

Abstract: Apparatuses, systems, and methods may determine a transport block size using a number of resource elements for sidelink data. The number of resource elements for the sidelink data is calculated based at least on a reference second stage Sidelink Control Information (SCI) overhead. The reference second stage SCI overhead is calculated using the reference coding rate, the reference beta offset, the reference PSFCH symbol number, the alpha value, and the second stage SCI payload size.

公开(公告)号：US20210251015A1

公开(公告)日：2021-08-12

申请号：US17174315

申请日：2021-02-11

Applicant: Apple Inc.

Inventor： Chunhai Yao ,  Haitong Sun ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Hong He ,  Jie Cui ,  Oghenekome Oteri ,  Weidong Yang ,  Wei Zeng ,  Yang Tang ,  Yuchul Kim ,  Yuqin Chen ,  Yushu Zhang

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/27

Abstract: The implementations disclosed provide apparatus, systems, and methods for channel structure construction for a two-step random access channel (RACH) using a new radio (NR) user equipment (UE) wireless device. The wireless device includes one or more computer processors configured to generate a physical RACH (PRACH) preamble mapped to a physical uplink shared channel (PUSCH) resource unit. The PRACH preamble is associated with a preamble group indicating a configuration of the PUSCH. The preamble group has a size indicated by radio resource control (RRC) signaling performed by the wireless device. A message is encoded including the PRACH preamble and a payload carried by the PUSCH. The configuration of the PUSCH includes parameters for decoding the message. The wireless device couples communicatively to a base station using the PUSCH. The message is transmitted to the base station. The base station decodes the message based on the parameters of the PUSCH configuration.

公开(公告)号：US11057790B2

公开(公告)日：2021-07-06

申请号：US16935008

申请日：2020-07-21

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Tianyan Pu ,  Yang Li ,  Haitong Sun ,  Wei Zeng ,  Jia Tang ,  Beibei Wang ,  Sami M. Almalfouh ,  Zhu Ji ,  Johnson O. Sebeni ,  Yuchul Kim ,  Dawei Zhang

IPC: H04L5/00 ,  H04W24/10 ,  H04B7/08 ,  H04B7/06 ,  H04W72/08 ,  H04W24/08 ,  H04W72/04 ,  H04W88/02

Abstract: Apparatuses, systems, and methods for a wireless device to perform a method including performing one or more of periodic beam quality measurements and/or event-based beam quality measurements, determining, based at least in part on one or more of the periodic beam quality measurements and/or the event-based beam quality measurements, a recommended beam quality measurement configuration, and transmitting, to a base station serving the UE, the recommended beam quality measurement configuration. In addition, the UE may perform receiving, from the base station, instructions regarding the beam quality measurement configuration. The instructions may include instructions to activate, deactivate, and/or modify at least one beam quality measurement configuration. In addition, the instructions may be based, at least in part, on the recommended beam quality measurement configuration.

公开(公告)号：US11013049B2

公开(公告)日：2021-05-18

申请号：US16549904

申请日：2019-08-23

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W76/15 ,  H04W28/02 ,  H04W28/08 ,  H04W36/28 ,  H04W36/14 ,  H04W84/12 ,  H04W88/06 ,  H04W76/16

Abstract: This disclosure relates to aggregation of radio resources provided according to multiple radio interfaces. According to some embodiments, a base station may establish a radio bearer with a wireless user equipment (UE) device. The radio bearer may initially utilize a first radio interface between the base station and the UE. The base station may receive an indication to aggregate radio resources of an access point that utilizes a second radio interface for the UE. Based on the indication to aggregate radio resources for the UE, the base station may redirect at least a portion of data of the radio bearer by way of the access point to be exchanged with the UE using the second radio interface.

公开(公告)号：US10973008B2

公开(公告)日：2021-04-06

申请号：US16186350

申请日：2018-11-09

Applicant: Apple Inc.

Inventor： Sami M. Almalfouh ,  Yuchul Kim ,  Wei Zhang ,  Tianyan Pu ,  Zhu Ji ,  Dawei Zhang ,  Wei Zeng ,  Johnson O. Sebeni ,  Yang Li

IPC: H04W76/10 ,  H04W72/04 ,  H04W28/18 ,  H04W76/28

Abstract: This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.

公开(公告)号：US10972247B2

公开(公告)日：2021-04-06

申请号：US16892901

申请日：2020-06-04

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  S. Aon Mujtaba ,  Dawei Zhang

IPC: H04J3/06 ,  H04L7/00 ,  H04L5/00 ,  H04L12/26

Abstract: This disclosure relates to using a dedicated reference subframes in a cellular communication system. According to one embodiment, a base station may transmit reference signals in a dedicated synchronization and measurement reference subframe. Neighboring base stations may also transmit reference signals in dedicated reference subframes in a temporally coordinated (synchronized) manner. The reference signals transmitted be each base station may be orthogonal with the reference signals transmitted by each neighboring base station. The reference subframes may be transmitted periodically, and data subframes may be transmitted between reference subframes. Some or all of the data subframes may not include cell-specific reference symbols, as their function may be unnecessary given the use of the dedicated reference subframes.

公开(公告)号：US20210100022A1

公开(公告)日：2021-04-01

申请号：US17024215

申请日：2020-09-17

Applicant: Apple Inc.

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

IPC: H04W72/12 ,  H04W72/04 ,  H04L1/00

Abstract: Apparatuses, systems, and methods for providing downlink control for multi-TRP transmission. A cellular base station may provide a downlink control information transmission to a wireless device scheduling downlink transmissions to the wireless device from multiple transmission reception points. The downlink control information may include information that can be used by the wireless device to determine any or all of physical resource block bundling sizes, frequency domain resource allocations, modulation and coding schemes, redundancy versions, phase tracking reference signal configurations, and any of various other possible types of configuration information for the downlink transmissions. The wireless device may receive the downlink transmissions from the plurality of transmission reception points in accordance with the downlink control information.

公开(公告)号：US10945268B2

公开(公告)日：2021-03-09

申请号：US16749553

申请日：2020-01-22

Applicant: Apple Inc.

Inventor： Yang Li ,  Haitong Sun ,  Zhu Ji ,  Yuchul Kim ,  Beibei Wang ,  Wei Zhang ,  Wei Zeng ,  Jia Tang ,  Tianyan Pu ,  Sami M. Almalfouh ,  Johnson O. Sebeni ,  Dawei Zhang

IPC: H04B7/02 ,  H04W72/04 ,  H04B7/06 ,  H04B7/08 ,  H04W24/10

Abstract: Apparatuses, systems, and methods for a wireless device to perform user equipment (UE) initiated beam management procedures with a base station or gNB. A wireless device in communication with a 5G base station may detect degradation in the pair of transmit and receive beams between the gNB and the device. The device may select a preferred beam management procedure and indicate the preference to the gNB.

公开(公告)号：US20210051767A1

公开(公告)日：2021-02-18

申请号：US16968846

申请日：2019-08-15

Applicant: APPLE INC

Inventor： Wei Zhang ,  Fangli XU ,  Haitong Sun ,  Sriram Subramanian ,  Vishwanth Kamala Govindaraju ,  Johnson O. Sebeni ,  Dawei Zhang ,  Hong He ,  Yuchul Kim

IPC: H04W88/10 ,  H04W88/02 ,  H04W76/15 ,  H04W76/27 ,  H04W72/04 ,  H04W24/08

Abstract: A user equipment (UE) device may reside in a state of dual connectivity with a master cell group (MCG) and a secondary cell group (SCG), wherein the radio access technologies of the MCG and the SCG are different. While in the dual connectivity state, the UE device may transition to a mode of reduced activity (e.g., processing and/or RF activity) relative to the secondary cell group (SCG) in order to save power, e.g., when traffic flow via the SCG is below a threshold, or when scheduling activity on the SCG is low. Various mechanisms may be employed to reduce activity, e.g., mechanisms such as reduction of beam monitoring, deactivation of secondary cells of the SCG, reduction of number of active antenna elements, employment of longer periods for periodic measurement and reporting processes, etc.