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Patent Agency Ranking
公开(公告)号：US20240151857A1
公开(公告)日：2024-05-09
申请号：US18262596
申请日：2021-12-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yang Xiao , Guosheng Huang , Yongfeng Guo , Guanzhong Tan , Yongxiang Liu
IPC: G01S19/37
CPC classification number: G01S19/37
Abstract: A clock error prediction method includes: obtaining historical satellite clock error data of a preset time period which includes broadcast ephemeris clock error data and precise ephemeris clock error data; obtaining corrected precise ephemeris clock error data based on the broadcast ephemeris clock error data; obtaining a single-day clock speed of each satellite through fitting based on single-day clock error data in the corrected precise ephemeris clock error data of each satellite; obtaining a clock speed time sequence of each satellite based on the single-day clock speed of each satellite; obtaining a clock speed change rate of each satellite through fitting based on the clock speed time sequence of each satellite; and obtaining a predicted clock error of each satellite in a preset future time period based on an initial clock error value, a clock speed, and the clock speed change rate of each satellite.
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公开(公告)号：US11108548B2
公开(公告)日：2021-08-31
申请号：US16256129
申请日：2019-01-24
Applicant: Huawei Technologies Co., Ltd.
Abstract: The method provided in the embodiments of this application includes: obtaining, by a server, a first key (Ksm) shared with a gateway; receiving, by the server, an encrypted first random factor (Rand-M-Encry), a first data digest (Data-Hash), and encrypted first data (Data-Encry) that are sent by a terminal; decrypting, by the server, the Rand-M-Encry by using the Ksm, to obtain a second random factor (Rand-M′); performing, by the server, an operation on the Rand-M′ and Kpsa-xi by using a second preset algorithm, to generate a third key (K′sx); decrypting, by the server, the Data-Encry by using the K′sx, to obtain second data (Data′); performing, by the server, an operation on the K′sx and the Data′ based on a first preset algorithm to obtain a second data digest (Data-Hash′); and if the Data-Hash′ is the same as the Data-Hash, determining, by the server, that authentication of the terminal succeeds.
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公开(公告)号：US10945143B2
公开(公告)日：2021-03-09
申请号：US16188824
申请日：2018-11-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: Embodiments of the present invention provide a data transmission method, apparatus, and system. The method is applied to a data transmission system. The data transmission system includes a system platform and a terminal device. A method performed by the system platform includes: determining, based on a type of the terminal device and a type of data generated by the terminal device, a data transmission rule of the data generated by the terminal device; and sending a data transmission message to the terminal device, where the data transmission message carries the data transmission rule, so that the terminal device sends, to the system platform based on the data transmission rule, the data corresponding to the data transmission rule. Massive data can be effectively prevented from being transmitted to the system platform by configuring the data transmission rule, and data with a high priority can be preferentially processed, to improve system performance.
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公开(公告)号：US20190082341A1
公开(公告)日：2019-03-14
申请号：US16188824
申请日：2018-11-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: Embodiments of the present invention provide a data transmission method, apparatus, and system. The method is applied to a data transmission system. The data transmission system includes a system platform and a terminal device. A method performed by the system platform includes: determining, based on a type of the terminal device and a type of data generated by the terminal device, a data transmission rule of the data generated by the terminal device; and sending a data transmission message to the terminal device, where the data transmission message carries the data transmission rule, so that the terminal device sends, to the system platform based on the data transmission rule, the data corresponding to the data transmission rule. Massive data can be effectively prevented from being transmitted to the system platform by configuring the data transmission rule, and data with a high priority can be preferentially processed, to improve system performance.
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公开(公告)号：US10764243B2
公开(公告)日：2020-09-01
申请号：US16142978
申请日：2018-09-26
Applicant: Huawei Technologies Co., Ltd.
Abstract: A method and an apparatus for keeping network address translation mapping alive are provided. The method includes: receiving, by a network address translation NAT device, a probe request sent by an internal network device; sending a probe response to the internal network device, where the probe response carries indication information, and the indication information indicates that the internal network device does not actively initiate a heartbeat message to keep network address translation mapping alive; allocating at least two public network addresses to the internal network device from an address resource pool, and using in each time period of a subsequent session process between the internal network device and an external network device, one of the at least two public network addresses as a current active address in the time period, to map the private network address of the internal network device to the current active address.
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