知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

21 records (took 0.015 seconds)

    Device obfuscation of position tracking
    1.
    发明授权
    Device obfuscation of position tracking 有权

    公开(公告)号：US10447414B2

    公开(公告)日：2019-10-15

    申请号：US15715058

    申请日：2017-09-25

    Applicant: Apple Inc.

    Inventor： Elliot S. Briggs ,  Zhu Ji ,  Johnson O. Sebeni

    IPC: H04B17/10 ,  G01S5/02 ,  H04W4/02 ,  H04B17/18 ,  H04W4/90

    Abstract: A user of a device desires that geographic position information of the device be kept private. A network may track a geographic position of a device using timing advance (TA) data and also a passive attacker may attempt to track the geographic position of the device by observing base station TA commands. In embodiments provided herein, a device diminishes or obfuscates geographic position information by using a timing change value while not disturbing synchronization of uplink signals from multiple devices arriving at a base station. To resist an averaging solution by an observer, the device in some embodiments adjusts the timing change value based on an internal timer. In an emergency call situation, the method permits the base station to obtain geographic position information based on TA procedures.

    Message Attestation for Sealed Sender
    2.
    发明申请
    Message Attestation for Sealed Sender 有权

    公开(公告)号：US20250119411A1

    公开(公告)日：2025-04-10

    申请号：US18909442

    申请日：2024-10-08

    Applicant: Apple Inc.

    Inventor： Catherine Yun ,  Elliot S. Briggs ,  Simon J. Gornall ,  Michael J. Hashe ,  Steven A. Myers ,  Andrew M. Pace ,  Yannick L. Sierra ,  Phillip T. Tao

    IPC: H04L9/40 ,  H04L9/14 ,  H04L9/32

    Abstract: Techniques are disclosed relating to improving secure message communication. In various embodiments, a message delivery server receives a request to deliver an encrypted message from a sender to a recipient. The encrypted message obfuscates the identity of the sender such that the message delivery server is unable to determine the identity of the sender. The message delivery server determines whether to deliver the encrypted message based on a signed attestation received with the request and, based on the determining, delivers the encrypted message to the recipient. In some embodiments, the determining includes verifying the signed attestation using a verification key provide by the sender. In some embodiments, the encrypted message is an email, a text message, a push notification, or a video or audio call request.

    Methods and apparatus for efficient transfer of multiple cellular service credentials
    3.
    发明授权
    Methods and apparatus for efficient transfer of multiple cellular service credentials 有权

    公开(公告)号：US11516650B2

    公开(公告)日：2022-11-29

    申请号：US16997898

    申请日：2020-08-19

    Applicant: Apple Inc.

    Inventor： Raj S. Chaugule ,  Anish Kumar Goyal ,  Elliot S. Briggs ,  Li Li ,  Zexing Shi

    IPC: H04W8/20 ,  H04W12/06

    Abstract: This Application describes mechanisms to transfer cellular service plans and associated credentials efficiently between wireless devices. Information regarding transferability of cellular services for SIMs/eSIMs to a wireless device are obtained from locally stored or remotely accessible cellular service information and/or associated mobile network operator (MNO) information. Access to network-based servers to determine transferability and/or to effect transfer can use non-cellular connections when available. Transferability information can be presented to a user to narrow selection of cellular service plans to transfer.

    Enhanced Security for Access Stratum Transmission
    4.
    发明申请
    Enhanced Security for Access Stratum Transmission 有权

    公开(公告)号：US20210204129A1

    公开(公告)日：2021-07-01

    申请号：US17057622

    申请日：2018-06-22

    Applicant: Apple Inc.

    Inventor： Xiangying Yang ,  Elliot S. Briggs ,  Samuel D. Post ,  Yannick L. Sierra ,  Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Huarui Liang ,  Li Li ,  Lijia Zhang ,  Shu Guo ,  Yuqin Chen

    IPC: H04W12/069 ,  H04W12/73 ,  H04W12/108 ,  H04W76/27 ,  H04W74/08

    Abstract: This disclosure relates to techniques, base stations, and user equipment devices (UEs) for performing base station authentication through access stratum signaling transmissions. The UE may operate in idle mode and may receive an authentication message from a base station through the wireless interface while operating in idle mode. The UE may determine whether a signature comprised within the authentication message is valid, and the UE may continue a connection procedure with the base station based on a determination that the signature is valid. If it is determined that the signature is invalid, the UE may designate the base station as a barred base station and may perform cell re-selection. The authentication message may be one of a radio resource control (RRC) connection setup message, a special RRC message, a media access control (MAC) message, or a random access channel (RACH) message comprising a random access response (RAR) message.

    Device Managed Cryptographic Keys
    6.
    发明申请
    Device Managed Cryptographic Keys 有权

    公开(公告)号：US20250119273A1

    公开(公告)日：2025-04-10

    申请号：US18907189

    申请日：2024-10-04

    Applicant: Apple Inc.

    Inventor： Jonathan L. Choukroun ,  Elliot S. Briggs ,  Marcos Caceres ,  Simon J. Gornall ,  Michael J. Hashe ,  Graham S. Orndorff ,  Andrew M. Pace ,  Yannick L. Sierra ,  Catherine Yun

    IPC: H04L9/08 ,  G06F9/54 ,  H04L9/30

    Abstract: Techniques are disclosed relating to improving key management on devices. In various embodiments, a device receives, from a browser via a key-management API supported by the device, a request for a browser session to receive access to a cryptographic key managed by the device. The key-management API of the device determines whether to grant the browser session access to the cryptographic key based on verification of a signed attestation from a server corresponding to the browser session and using metadata stored about the cryptographic key. Based on the determination, the device provides access to the cryptographic key via the key-management API. In some embodiments, providing access to the cryptographic key includes performing a requested cryptographic operation using the cryptographic key and without providing the cryptographic key to the browser. In some embodiments, the cryptographic key is managed by an operating system, a secure element, or another application of the device.

    Device, system, and method for adaptive transmission power allocation in uplink carrier aggregation
    9.
    发明授权
    Device, system, and method for adaptive transmission power allocation in uplink carrier aggregation 有权

    公开(公告)号：US11076359B2

    公开(公告)日：2021-07-27

    申请号：US16607169

    申请日：2017-06-02

    Applicant: Apple Inc.

    Inventor： Zhu Ji ,  Ruirui Zong ,  Wenshan Pan ,  Lei Li ,  Yaoqi Yan ,  Elliot S. Briggs

    IPC: H04W52/20 ,  H04W52/14 ,  H04L1/20 ,  H04W52/36 ,  H04W72/04 ,  H04W52/34

    Abstract: A device, system, and method adaptively adjusts uplink power transmission to component carriers in carrier aggregation. The method is performed at a user equipment configured with a carrier aggregation functionality including a primary component carrier (PCC) and a secondary component carrier (SCC), the UE using a first transmit power for an uplink transmission on the PCC and using a second transmit power for the uplink transmission on the SCC. The method includes determining whether a total transmit power including the first and second transmit powers for the uplink transmission exceeds a predetermined threshold. The method includes, when the total transmit power exceeds the predetermined threshold, adjusting the first transmit power based on a connectivity parameter for the PCC. The method includes adjusting the second transmit power based on the adjusting of the first transmit power.

Patent Agency Ranking