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    Apparatus and Method for Protecting Shared Objects
    1.
    发明申请
    Apparatus and Method for Protecting Shared Objects 有权

    公开(公告)号：US20230058046A1

    公开(公告)日：2023-02-23

    申请号：US17792292

    申请日：2020-01-29

    Applicant: Sampo SOVIO ,  Huawei Technologies Co., Ltd.

    Inventor： Sampo Sovio ,  Qiming Li ,  Gang Lian ,  Kui Wang ,  Santeri Salko ,  Vladimir Ushakov

    IPC: G06F21/53

    Abstract: An apparatus is configured to protect the privacy of shared objects by loading shared object into a user memory of a rich execution environment. The shared object has an encrypted segment and metadata. A request for decryption is sent to a trusted execution environment and the encrypted segment is decrypted based on the metadata and a predetermined platform key to produce a decrypted segment. The decrypted segment is written into the shared object. A request to lock the shared object is sent and a memory occupied by the shared object is locked or set to execute only. The lock of the memory region occupied by the decrypted shared object maps the memory region to be non-readable and non-writable to applications executing at a first privilege level and to the operating system kernel executing at a second privilege level.

    Apparatus and method for protecting shared objects
    2.
    发明授权
    Apparatus and method for protecting shared objects 有权

    公开(公告)号：US12197563B2

    公开(公告)日：2025-01-14

    申请号：US17792292

    申请日：2020-01-29

    Applicant: Huawei Technologies Co., Ltd. ,  Sampo Sovio

    Inventor： Sampo Sovio ,  Qiming Li ,  Gang Lian ,  Kui Wang ,  Santeri Salko ,  Vladimir Ushakov

    IPC: G06F21/53

    Abstract: An apparatus is configured to protect the privacy of shared objects by loading shared object into a user memory of a rich execution environment. The shared object has an encrypted segment and metadata. A request for decryption is sent to a trusted execution environment and the encrypted segment is decrypted based on the metadata and a predetermined platform key to produce a decrypted segment. The decrypted segment is written into the shared object. A request to lock the shared object is sent and a memory occupied by the shared object is locked or set to execute only. The lock of the memory region occupied by the decrypted shared object maps the memory region to be non-readable and non-writable to applications executing at a first privilege level and to the operating system kernel executing at a second privilege level.

    Devices and methods for key attestation with multiple device certificates
    3.
    发明授权
    Devices and methods for key attestation with multiple device certificates 有权

    公开(公告)号：US11374766B2

    公开(公告)日：2022-06-28

    申请号：US16638291

    申请日：2017-08-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Pekka Laitinen ,  Qiming Li ,  Sampo Sovio ,  Gang Lian ,  Zhihua Shan

    IPC: H04L9/32 ,  H04L9/06 ,  H04L9/08 ,  G06F9/54

    Abstract: A device with key attestation features comprises an operating system stored in its memory, the operating system comprising a secure environment including a trusted application, and two or more device certificates, each associated with a device key pair, stored in the memory of the device. The trusted application is configured to handle key pair generation requests and key pair attestation requests to read an indication of a preferred device certificate. An attestation certificate that is generated in response to the key pair attestation request is then signed using one of the two or more device certificates with its associated device key pair based on the indication of a preferred device certificate.

    Devices and Methods for Key Attestation with Multiple Device Certificates
    6.
    发明申请
    Devices and Methods for Key Attestation with Multiple Device Certificates 审中-公开

    公开(公告)号：US20200186357A1

    公开(公告)日：2020-06-11

    申请号：US16638291

    申请日：2017-08-11

    Applicant: Pekka LAITINEN ,  Huawei Technologies Co., Ltd.

    Inventor： Pekka Laitinen ,  Qiming Li ,  Sampo Sovio ,  Gang Lian ,  Zhihua Shan

    IPC: H04L9/32 ,  H04L9/06 ,  H04L9/08 ,  G06F9/54

    Abstract: A device with key attestation features comprises an operating system stored in its memory, the operating system comprising a secure environment including a trusted application, and two or more device certificates, each associated with a device key pair, stored in the memory of the device. The trusted application is configured to handle key pair generation requests and key pair attestation requests to read an indication of a preferred device certificate. An attestation certificate that is generated in response to the key pair attestation request is then signed using one of the two or more device certificates with its associated device key pair based on the indication of a preferred device certificate.

    Channel estimation method, base station, user equipment, and system
    7.
    发明授权
    Channel estimation method, base station, user equipment, and system 有权

    公开(公告)号：US10574485B2

    公开(公告)日：2020-02-25

    申请号：US15894379

    申请日：2018-02-12

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Qiming Li ,  Jing Han ,  Anjian Li ,  Xizeng Dai ,  Yue Zhao ,  Xingqing Cheng

    IPC: H04L25/02 ,  H04W76/10 ,  H04W88/02

    Abstract: A channel estimation method, a base station, user equipment (UE), and a system are provided. The method includes: setting up, by a base station, a connection to user equipment UE; and sending, to the UE, notification information indicating that the UE is in a radio remote scenario, where the notification information is used to instruct the UE to perform channel estimation by using a channel estimation algorithm applicable to the radio remote scenario, and the channel estimation algorithm is used to perform channel estimation on a signal that is obtained after downlink signals from multiple radio remote units RRUs are superposed. The UE can perform channel estimation by using the appropriate channel estimation algorithm, to effectively improve accuracy of the channel estimation, thereby effectively improving a downlink data throughput of the UE.

    Data demodulation method, user equipment, base station, and system
    10.
    发明授权
    Data demodulation method, user equipment, base station, and system 有权

    公开(公告)号：US10027525B2

    公开(公告)日：2018-07-17

    申请号：US15705830

    申请日：2017-09-15

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Qiming Li ,  Jiadi Liu ,  Jing Han ,  Anjian Li

    IPC: H04L27/26 ,  H04W4/02 ,  H04W88/02 ,  H04B7/08 ,  H04W84/00 ,  H04L27/00

    Abstract: A data demodulation method, apparatus, and system are presented. The method includes obtaining notification information indicating that UE is in a high-speed moving state; performing time-frequency synchronization processing on first downlink data according to the notification information to obtain second downlink data; and performing demodulation processing on the second downlink data to obtain third downlink data, where in the demodulation processing, inter-TTIs filtering for a channel estimation is not performed, or a filtering coefficient as a weight of a current TTI for a channel estimation is greater than a filtering coefficient as a weight of a TTI that is at the time when the UE is in the non-high-speed moving state for a channel estimation. The demodulation method is applicable to a high-speed scenario for improving a downlink data throughput of the UE.

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