公开(公告)号：US11095481B2

公开(公告)日：2021-08-17

申请号：US16752276

申请日：2020-01-24

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: Embodiments of the present invention relate to a channel estimation method, a base station, user equipment UE, and a system. 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.

公开(公告)号：US20180302260A1

公开(公告)日：2018-10-18

申请号：US16015964

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

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

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

CPC classification number: H04L27/2655 ,  H04B7/08 ,  H04L25/02 ,  H04L25/0222 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2685 ,  H04L27/2695 ,  H04L2027/0026 ,  H04L2027/004 ,  H04W4/027 ,  H04W84/005 ,  H04W88/02

Abstract: A data demodulation method, apparatus, and system are presented. The method includes obtaining notification information indicating that user equipment (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-transmission time intervals (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.

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.

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.

公开(公告)号：US11290963B2

公开(公告)日：2022-03-29

申请号：US16663741

申请日：2019-10-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hengjin Liu ,  Qiming Li ,  Zhe Jin ,  Zhe Chen

IPC: H04W24/06 ,  H04W52/24 ,  H04B17/327 ,  H04L5/00 ,  H04W24/08 ,  H04W24/10 ,  H04W48/10 ,  H04W52/32

Abstract: An information sending method, including obtaining, by a network device, first indication information, where the first indication information indicates a magnitude relationship between a transmit power of a first signal received by a terminal device and a transmit power of a reference signal received by the terminal device, and the first signal is a synchronization signal, and sending the first indication information from the network device to the terminal device.

公开(公告)号：US10404516B2

公开(公告)日：2019-09-03

申请号：US16015964

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04L27/26 ,  H04W4/02 ,  H04B7/08 ,  H04W88/02 ,  H04L25/02 ,  H04L27/00 ,  H04W84/00

Abstract: A data demodulation method, apparatus, and system are presented. The method includes obtaining notification information indicating that user equipment (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-transmission time intervals (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.

公开(公告)号：US20180176905A1

公开(公告)日：2018-06-21

申请号：US15894875

申请日：2018-02-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiming Li ,  Jie Cui ,  Anjian Li ,  Jing Han

IPC: H04W72/04 ,  H04W72/08

CPC classification number: H04W72/0413 ,  H04W52/14 ,  H04W52/36 ,  H04W56/0015 ,  H04W56/0045 ,  H04W56/0055 ,  H04W72/044 ,  H04W72/085 ,  H04W88/06 ,  H04W88/08

Abstract: Embodiments of the present invention provide a communication method, a communications apparatus, and a base station, and relate to the communications field. The method includes: obtaining, by a terminal, a timing advance TA offset of a first cell set, and determining, by the terminal, a TA difference between the first cell set and each cell set of a second base station according to the TA offset of the first cell set after a TA of the first cell set is adjusted. The first cell set includes at least one cell, and the at least one cell is a cell of a first base station and has a TA needs to be adjusted;