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1.发明公开公开(公告)号：US20240146270A1
公开(公告)日：2024-05-02
申请号：US18405607
申请日：2024-01-05
Applicant: Huawei Technologies Co., Ltd.
IPC: H03F3/45
CPC classification number: H03F3/45968 , H03F3/45475 , H03F2200/261 , H03F2203/45212
Abstract: Embodiments of this application disclose a direct current offset current cancellation circuit and method, and a related device. An optical detection module included in the cancellation circuit in this application is configured to output a current signal. A first amplification module is configured to convert and amplify the current signal into a voltage signal. A first filtering module is configured to filter the voltage signal to obtain a direct current offset voltage. An acceleration module is configured to provide a target voltage for a charging module. The charging module is configured to output a cancellation voltage based on the target voltage and the direct current offset voltage. A direct current cancellation module is configured to cancel a direct current offset current in the current signal based on the cancellation voltage.
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公开(公告)号：US12107666B2
公开(公告)日：2024-10-01
申请号：US17727492
申请日：2022-04-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Enyu Zhou , Lei Jing , Xiaofei Zeng , Huafeng Lin
CPC classification number: H04J14/0204 , H04J14/0245 , H04J14/0258 , H04J14/0267
Abstract: This application provides a port detection method, an optical network device, and a passive optical network system, to quickly and accurately detect a port connected to an ONU, and improve efficiency of determining the port connected to the ONU. The method includes: an optical line terminal sends optical signals corresponding to all of N wavelengths to at least one optical network unit, where the N wavelengths are different from each other, and N is a positive integer; the OLT receives optical power values that are of the optical signals corresponding to all of the N wavelengths and that are sent by a first ONU, where the first ONU is any one of the at least one ONU; and the OLT determines, bases on the optical power values of the optical signals corresponding to all of the N wavelengths, information about an optical splitter port corresponding to the first ONU.
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公开(公告)号：US11855756B2
公开(公告)日：2023-12-26
申请号：US17707534
申请日：2022-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shengping Li , Lei Jing , Jun Zhou , Xuming Wu
CPC classification number: H04J3/0638 , H04J14/02
Abstract: A status control method, applied to an optical network unit (ONU) or an optical network terminal (ONT) of a passive optical network (PON) includes: receiving a first downlink data frame, where the first downlink data frame includes data of N different rates and indication information, the indication information includes length information of data of each rate in the first downlink data frame, and N≥2; determining length information of first data in the data of the N different rates, where a rate of the first data is higher than a working rate of a clock and data recovery (CDR) module; and generating control information based on the length information of the first data, to control the CDR module to be in a specified state within a period of time corresponding to the length information of the first data.
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公开(公告)号：US11711152B2
公开(公告)日：2023-07-25
申请号：US17722907
申请日：2022-04-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lei Jing , Junye Jin , Tianhai Chang , Shengping Li , Yuanbing Cheng , Huafeng Lin
CPC classification number: H04B10/672
Abstract: Example optical devices are described. One example optical device includes a receiver. The receiver includes a photodetector, a first amplifier, a second amplifier, and a controller, where the photodetector is coupled to the first amplifier, the first amplifier is coupled to the second amplifier, and the first amplifier and the second amplifier are separately coupled to the controller. The controller is configured to control a gain of the first amplifier and a gain of the second amplifier based on a preset arrival time of an optical signal and a gain intensity corresponding to the optical signal. The photodetector is configured to receive the optical signal and convert the optical signal into a current signal. The first amplifier is configured to convert the current signal into a first voltage signal. The second amplifier is configured to convert the first voltage signal into a second voltage signal.
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公开(公告)号：US11764809B2
公开(公告)日：2023-09-19
申请号：US17930523
申请日：2022-09-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaofei Zeng , Lei Jing , Lun Zhang
CPC classification number: H03M13/21 , H03M13/613 , H04L1/0045
Abstract: An information processing apparatus includes: a decoding module, configured to receive M first codewords from at least one peer device, where each first codeword includes first service data with a K-unit length and an error correction code with an R-unit length, where the decoding module is further configured to decode the M first codewords to obtain M second codewords, where a length of each second codeword is a sum of the K-unit length and the R-unit length, each second codeword includes second service data with the K-unit length and error correction information, the second service data is error-corrected first service data; and a classification and statistics collection module, configured to determine a bit error rate of the first service data based on the error correction information.
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Patent Agency Ranking
公开(公告)号：US10805007B2
公开(公告)日：2020-10-13
申请号：US16298677
申请日：2019-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhenping Wang , Bo Gao , Shiwei Nie , Lei Jing , Xuming Wu
Abstract: Embodiments of the present invention disclose an EPON communication method, an ONU, and an OLT. The method includes: generating, by an ONU, a first control frame, where the first control frame includes a first data field, and the first data field includes a bandwidth requirement of the at least one LLID; and sending, by the ONU, the first control frame to an OLT. In addition, the OLT generates a second control frame, where the second control frame includes a second data field, and the second data field includes grant information of the at least one LLID; and the OLT sends the second control frame to the ONU. In the embodiments of the present invention, the first control frame may carry bandwidth requirements of a plurality of LLIDs, so that one first control frame can be used to report bandwidth requirements of a plurality of LLIDs.
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公开(公告)号：US20240146256A1
公开(公告)日：2024-05-02
申请号：US18406864
申请日：2024-01-08
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H03F3/082 , H03F1/342 , H03F2200/144 , H03F2200/441
Abstract: Embodiments of this application disclose a trans-impedance amplifier and a trans-impedance amplifier control method that are used in the field of circuit technologies. A trans-impedance amplifier TIA includes an inverting amplification circuit and a voltage clamping circuit. The inverting amplification circuit is connected in parallel to the voltage clamping circuit. The inverting amplification circuit includes a first PMOS transistor and a first NMOS transistor that have a common gate. A source of the first PMOS transistor is connected to a drain of the first NMOS transistor. The voltage clamping circuit includes a second PMOS transistor and a second NMOS transistor that have a common gate. Gates of the two transistors are connected to an input end of the TIA. A source of the second NMOS transistor and a drain of the second PMOS transistor are connected to an output end of the TIA.
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公开(公告)号：US20230006698A1
公开(公告)日：2023-01-05
申请号：US17930523
申请日：2022-09-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaofei Zeng , Lei Jing , Lun Zhang
Abstract: An information processing apparatus includes: a decoding module, configured to receive M first codewords from at least one peer device, where each first codeword includes first service data with a K-unit length and an error correction code with an R-unit length, where the decoding module is further configured to decode the M first codewords to obtain M second codewords, where a length of each second codeword is a sum of the K-unit length and the R-unit length, each second codeword includes second service data with the K-unit length and error correction information, the second service data is error-corrected first service data; and a classification and statistics collection module, configured to determine a bit error rate of the first service data based on the error correction information.
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9.发明授权公开(公告)号：US11245490B2
公开(公告)日：2022-02-08
申请号：US16889053
申请日：2020-06-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lei Jing , Bo Gao , Shiwei Nie , Dekun Liu
Abstract: A data encoding method and apparatus and a data decoding method and apparatus in a passive optical network (PON) system include collecting N data blocks at a physical coding sublayer and generating valid data by combining the N data blocks, generating a payload, where the payload includes the valid data, performing FEC encoding on the payload to generate a check part, and generating a codeword structure. The synchronization header may be located at the head or the tail of the codeword structure.
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公开(公告)号：US20250038861A1
公开(公告)日：2025-01-30
申请号：US18916560
申请日：2024-10-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ahmer Iqbal , Lei Jing
IPC: H04B10/69
Abstract: This application relates to an optical receiver. The optical receiver includes a photodiode, a trans-impedance amplifying unit, a control unit, and one or more automatic gain controllers. The control unit includes one or more control subunits. The control subunit includes one or more inductors, and a field-effect transistor coupled in parallel to the one or more inductors. An input end of each automatic gain controller is coupled to an output end of a corresponding control subunit, and an output end of the automatic gain controller is coupled to a gate of a field-effect transistor included in the corresponding control subunit. The automatic gain controller is configured to output a voltage signal to the gate of the field-effect transistor, where the output voltage signal is used to change a current conduction capability of the field-effect transistor.
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