中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

143 records (took 0.049 seconds)

    Synchronizing wireless communications between electronic devices
    1.
    发明授权
    Synchronizing wireless communications between electronic devices 有权

    公开(公告)号：US12075372B2

    公开(公告)日：2024-08-27

    申请号：US17384617

    申请日：2021-07-23

    Applicant: Apple Inc.

    Inventor： Zhu Ji ,  Jianxiong Shi ,  Miao Yao

    IPC: H04W56/00 ,  H04J13/00 ,  H04L27/26

    CPC classification number: H04W56/001 ,  H04J13/0062 ,  H04L27/2607 ,  H04L27/2634

    Abstract: In an example method, a first device determines a first Zadoff-Chu sequence having a first root value, and a second Zadoff-Chu sequence having a second root value, where the second root value is an inverse modulus of the first root value. Further, the first device generates a wireless signal including (i) a first preamble generated based, at least in part, on the first Zadoff-Chu sequence, (ii) a second preamble generated based, at least in part, on the second Zadoff-Chu sequence, and (iii) a payload. Further, the first device transmits the wireless signal from the first device to a second device.

    Cellular system selection frequency scan scope
    2.
    发明授权
    Cellular system selection frequency scan scope 有权

    公开(公告)号：US11284318B2

    公开(公告)日：2022-03-22

    申请号：US16806217

    申请日：2020-03-02

    Applicant: Apple Inc.

    Inventor： Jianxiong Shi ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Thanigaivelu Elangovan ,  Viswanath Nagarajan ,  Yifan Zhu

    IPC: H04W36/00 ,  H04J11/00 ,  H04W36/32 ,  H04W36/36 ,  H04W48/16 ,  H04W48/18

    Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.

    Adaptive quality of service for latency-sensitive applications
    3.
    发明授权
    Adaptive quality of service for latency-sensitive applications 有权

    公开(公告)号：US11212697B2

    公开(公告)日：2021-12-28

    申请号：US16707696

    申请日：2019-12-09

    Applicant: Apple Inc.

    Inventor： Faraz Faheem ,  Jianxiong Shi ,  Li Su ,  Sreevalsan Vallath ,  Yingjie Zhao ,  Yaoqi Yan ,  Jishan Gao

    IPC: H04W28/02 ,  H04M15/00 ,  H04W24/08 ,  H04W76/10

    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment (UE) device to adaptively enhance the quality of service (QoS) configuration of a bearer of communications conducted over a cellular network between a UE application and a server. The UE may use various information, including a QoS profile associated with the application, to determine requested QoS parameters and/or whether the UE is permitted to request or access enhanced QoS functionality. The UE may then send a request to the cellular network indicating the requested QoS parameters, and the network may adjust the QoS configuration of the bearer in response. The UE and the network may perform routine QoS measurements and exchange information in order to adaptively maintain and optimize the QoS configuration. These techniques may tend to provide more appropriate QoS to the application, which may improve user experience.

    Cellular system selection frequency scan scope
    4.
    发明授权
    Cellular system selection frequency scan scope 有权

    公开(公告)号：US10609600B2

    公开(公告)日：2020-03-31

    申请号：US16372263

    申请日：2019-04-01

    Applicant: Apple Inc.

    Inventor： Jianxiong Shi ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Thanigaivelu Elangovan ,  Viswanath Nagarajan ,  Yifan Zhu

    IPC: H04W36/00 ,  H04J11/00 ,  H04W36/32 ,  H04W36/36 ,  H04W48/16 ,  H04W48/18

    Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.

    Apparatus and methods for signal reception based on network load estimations
    6.
    发明授权
    Apparatus and methods for signal reception based on network load estimations 有权

    公开(公告)号：US10194403B2

    公开(公告)日：2019-01-29

    申请号：US15130648

    申请日：2016-04-15

    Applicant: APPLE INC.

    Inventor： Johnson Sebeni ,  Yu-Lin Wang ,  Jianxiong Shi

    IPC: H04W52/34 ,  H04L1/00 ,  H04W52/32 ,  H04W24/02 ,  H04W24/08 ,  H04W52/24

    Abstract: Methods and apparatus for correcting quantization errors in signal reception based on estimated network loading including solutions for preserving cellular network performance in low noise, high interference environments. In one embodiment, a data channel is amplified with respect to other signals based on network load during periods of relatively low network utilization. Dynamic modification of the data channel's power level is configured to overcome quantization errors, rather than the true noise floor (which is insignificant in low noise environments). Such solutions provide both the fidelity necessary to enable high degrees of unwanted signaling rejection, while still preserving data channel quality.

    Broadcast information block assistance for a wireless device
    7.
    发明授权
    Broadcast information block assistance for a wireless device 有权

    公开(公告)号：US10182392B2

    公开(公告)日：2019-01-15

    申请号：US16007004

    申请日：2018-06-13

    Applicant: Apple Inc.

    Inventor： Jianxiong Shi ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Venkateswara Rao Manepalli

    IPC: H04W48/10 ,  H04W76/14

    Abstract: This disclosure relates to broadcast information block assistance for a wireless device. The wireless device may obtain a first plurality of broadcast information blocks from a first base station. The wireless device may receive a second plurality of broadcast information blocks associated with the first base station from a source other than the first base station. The wireless device may determine if the second plurality of broadcast information blocks match the first plurality of broadcast information blocks based on version information specified in the first plurality of broadcast information blocks. When the broadcast information blocks match, the wireless device may use the first and second pluralities of broadcast information blocks to perform communication with the first base station without obtaining the second plurality of information blocks from the first base station.

Patent Agency Ranking