公开(公告)号：US11558118B2

公开(公告)日：2023-01-17

申请号：US17244298

申请日：2021-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei Zhou ,  Shiwei Nie ,  Shengping Li ,  Bo Gao

IPC: H04B10/27 ,  H04J14/00 ,  H04L25/03

Abstract: Embodiments of this application disclose a board, an optical module, a MAC chip, a DSP, and an information processing method. The board in the embodiments of this application includes a media access control (MAC) chip, a digital signal processor (DSP), and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

公开(公告)号：US20210194588A1

公开(公告)日：2021-06-24

申请号：US17195920

申请日：2021-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuming Wu ,  Shengping Li ,  Lei Zhou ,  Xiaofei Zeng

IPC: H04B10/27 ,  H04L7/00 ,  H04L25/03

Abstract: A data transmission method includes receiving, by an optical line terminal (OLT) from an optical network unit (ONU), uplink burst data that includes a synchronization data block and a payload, where the synchronization data block includes first synchronization data, wherein the first synchronization data includes a first preamble and an ONU identifier, and a first bandwidth occupied by the first frequency distribution of the first synchronization data is narrower than a second bandwidth occupied by the second frequency distribution of the payload, and obtaining, by the OLT from the first synchronization data, the ONU identifier.

公开(公告)号：US08780340B2

公开(公告)日：2014-07-15

申请号：US13693657

申请日：2012-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zebin Li ,  Degang Zhong ,  Shengping Li ,  Changliang Yu

IPC: G01N21/00 ,  G01J1/04 ,  G01J1/42 ,  G01J5/08 ,  G01M11/00

CPC classification number: G01M11/3109 ,  G01M11/3145 ,  H04B10/071 ,  H04B10/272 ,  H04Q11/0067 ,  H04Q2011/0083

Abstract: Embodiments of the present disclosure disclose an OTDR test signal modulation circuit, including a laser diode drive, a laser diode, a current adjusting unit, and an OTDR control unit. The laser diode drive is connected to the laser diode and is configured to drive, according to an input data signal, the laser diode to transmit data light. The current adjusting unit is connected to the laser diode and the OTDR control unit and is configured to adjust a current flowing through the laser diode according to an OTDR test signal provided by the OTDR control unit, so as to modulate the OTDR test signal to the data light transmitted by the laser diode. Moreover, the embodiments of the present disclosure also disclose a passive optical network system and apparatus.

Abstract translation: 本公开的实施例公开了包括激光二极管驱动器，激光二极管，电流调节单元和OTDR控制单元的OTDR测试信号调制电路。 激光二极管驱动器连接到激光二极管，并配置为根据输入数据信号驱动激光二极管传输数据光。 电流调节单元连接到激光二极管和OTDR控制单元，并且被配置为根据由OTDR控制单元提供的OTDR测试信号来调节流过激光二极管的电流，以便将OTDR测试信号调制到 由激光二极管传输的数据光。 此外，本公开的实施例还公开了一种无源光网络系统和装置。

公开(公告)号：US20240121004A1

公开(公告)日：2024-04-11

申请号：US18390791

申请日：2023-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuming Wu ,  Shengping Li ,  Lei Zhou ,  Xiaofei Zeng

IPC: H04B10/27 ,  H04L7/00 ,  H04L25/03

CPC classification number: H04B10/27 ,  H04L7/0075 ,  H04L25/03878

Abstract: A data transmission method includes receiving, by an optical line terminal (OLT) from an optical network unit (ONU), uplink burst data that includes a synchronization data block and a payload, where the synchronization data block includes first synchronization data, wherein the first synchronization data includes a first preamble and an ONU identifier, and a first bandwidth occupied by the first frequency distribution of the first synchronization data is narrower than a second bandwidth occupied by the second frequency distribution of the payload, and obtaining, by the OLT from the first synchronization data, the ONU identifier.

公开(公告)号：US11909446B2

公开(公告)日：2024-02-20

申请号：US17962840

申请日：2022-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuming Wu ,  Shengping Li ,  Lei Zhou ,  Xiaofei Zeng

IPC: H04B10/27 ,  H04L7/00 ,  H04L25/03

CPC classification number: H04B10/27 ,  H04L7/0075 ,  H04L25/03878

Abstract: A data transmission method includes receiving, by an optical line terminal (OLT) from an optical network unit (ONU), uplink burst data that includes a synchronization data block and a payload, where the synchronization data block includes first synchronization data, wherein the first synchronization data includes a first preamble and an ONU identifier, and a first bandwidth occupied by the first frequency distribution of the first synchronization data is narrower than a second bandwidth occupied by the second frequency distribution of the payload, and obtaining, by the OLT from the first synchronization data, the ONU identifier.

公开(公告)号：US11321562B2

公开(公告)日：2022-05-03

申请号：US17078920

申请日：2020-10-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianyu Zheng ,  Shengping Li ,  Ting Yang

IPC: G06K9/00 ,  G06K9/62 ,  H04B10/532 ,  H04B10/54

Abstract: A conformance testing method including: obtaining a testing symbol pattern in an optical signal; performing equalization compensation on the testing symbol pattern; generating a testing eye pattern; calculating a value of a first parameter based on the testing eye pattern and a noise enhancement coefficient, where the first parameter is used to determine a transmitter dispersion eye pattern closure degree of the optical transmitter; and when the value of the first parameter is less than or equal to a preset threshold, determining that conformance testing on the optical signal succeeds.

公开(公告)号：US20210042521A1

公开(公告)日：2021-02-11

申请号：US17078920

申请日：2020-10-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianyu Zheng ,  Shengping Li ,  Ting Yang

IPC: G06K9/00 ,  G06K9/62 ,  H04B10/54 ,  H04B10/532

Abstract: A conformance testing method including: obtaining a testing symbol pattern in an optical signal; performing equalization compensation on the testing symbol pattern; generating a testing eye pattern; calculating a value of a first parameter based on the testing eye pattern and a noise enhancement coefficient, where the first parameter is used to determine a transmitter dispersion eye pattern closure degree of the optical transmitter; and when the value of the first parameter is less than or equal to a preset threshold, determining that conformance testing on the optical signal succeeds.

公开(公告)号：US10601515B2

公开(公告)日：2020-03-24

申请号：US16054388

申请日：2018-08-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengping Li ,  Zhicheng Ye ,  Xuming Wu

IPC: H04B10/516 ,  H04B10/27 ,  H04Q11/00

Abstract: Embodiments of the present invention disclose a method for switching a modulation format of a passive optical network, an apparatus, and a system. The method includes: separately delivering, by an OLT, a registration message to an optical network unit in all supported upstream modulation formats and/or downstream modulation formats; receiving, by the OLT, a first message reported by the optical network unit, where the first message includes an upstream modulation format capability and/or a downstream modulation format capability; and determining, by the OLT, a target upstream modulation format and/or a target downstream modulation format of the optical network unit according to the first message, and instructing the optical network unit to switch to the target upstream modulation format and/or the target downstream modulation format. Therefore, in a PON system that supports a plurality of modulation formats, a modulation format reporting capability of the ONU is improved.

公开(公告)号：US10419122B2

公开(公告)日：2019-09-17

申请号：US16120436

申请日：2018-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekun Liu ,  Shengping Li

IPC: H04J14/02 ,  H04B10/50 ,  H04B10/2513 ,  H04B10/2507 ,  H04B10/27 ,  H04J14/08

Abstract: A multiplexer/demultiplexer and a passive optical network system are provided. The multiplexer/demultiplexer includes N optical multiplexing/demultiplexing modules. The optical multiplexing/demultiplexing modules multiplex signals with different wavelengths from a plurality of ports to a same port, or demultiplex signals with different wavelengths from one port to different ports. The N optical multiplexing/demultiplexing modules correspond to the signals with different wavelengths. In the optical multiplexing/demultiplexing modules, a negative dispersion amount and an insertion loss of an Mth optical multiplexing/demultiplexing module are less than those of an (M+1)th optical multiplexing/demultiplexing module, where N is a positive integer, and M is a positive integer less than or equal to N. The multiplexer/demultiplexer and the passive optical network system increase an optical power budget between an optical transmitter and an optical transceiver.

公开(公告)号：US10123101B2

公开(公告)日：2018-11-06

申请号：US15639529

申请日：2017-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhicheng Ye ,  Shengping Li ,  Bo Gao

IPC: H04B10/00 ,  H04Q11/00 ,  H04J14/02 ,  H04J14/00 ,  H04L12/803

Abstract: Embodiments of the invention disclose a communication method which includes: receiving, by the optical network unit (ONU) by using the first port or the second port, a wavelength switching request message delivered by the optical line terminal (OLT), where the wavelength switching request message carries second wavelength channel information and port information that is of the second port; switching, by the ONU, an operating wavelength channel of an optical module connected to the second port from a first wavelength channel to a second wavelength channel corresponding to the second wavelength channel information; and sending, by the ONU, a wavelength switching complete message to the OLT by using the first port. According to the communication method provided in embodiments of the present invention, quick wavelength switching is performed based on the second port, so that a service is not interrupted in a wavelength switching process, and user experience is better.