公开(公告)号：US20230300501A1

公开(公告)日：2023-09-21

申请号：US18324374

申请日：2023-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hengyun Jiang ,  Chao Jin ,  Bo Wu ,  Ning Deng

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0067 ,  H04J14/0212

Abstract: An optical distribution network, an optical network system, a splitter, and a method for identifying a port of the splitter are provided. The optical distribution network includes a splitter, a first optical filter, and a first power change assembly. The splitter includes at least two output ports, each output port corresponds to at least one first optical filter, different output ports correspond to different first optical filters, and center wavelengths of detection light that the different first optical filters allow to pass through or do not allow to pass through are different. Each output port of each splitter in an Nth-level splitter corresponds to the first power change assembly, and the first power change assembly is configured to change a power of first service light based on received first detection light.

公开(公告)号：US20230031468A1

公开(公告)日：2023-02-02

申请号：US17961004

申请日：2022-10-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chao Pan ,  Ziliang Li ,  Ning Deng

IPC: G01M11/00 ,  H04B10/071

Abstract: An optical time-domain reflectometer (OTDR), where a laser emitting apparatus of the OTDR outputs a first optical signal in a first time period. A signal modulation apparatus of the OTDR generates a pulse signal based on the first optical signal, and outputs the pulse signal to an optical fiber in a second time period, where the first time period includes the second time period. A receiver of the OTDR receives a scattered signal from the optical fiber, where a frequency of the scattered signal is the same as a frequency of the first optical signal. Then, the laser emitting apparatus outputs a second optical signal in a third time period, where a frequency of the second optical signal is different from the frequency of the first optical signal. The second optical signal is used as a local oscillator signal to implement coherent detection in the receiver.

公开(公告)号：US11082131B2

公开(公告)日：2021-08-03

申请号：US16805220

申请日：2020-02-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu Zhou ,  Ning Deng

IPC: H04B10/40 ,  H04B10/516 ,  H04B10/61 ,  H04B10/64

Abstract: Embodiments of the present invention disclose an optical signal transmission system and an optical signal transmission method. A specific solution is as follows: a first coherent transceiver is configured to: convert N channels of downlink data into N modulating signals, convert the N modulating signals into a first wavelength division multiplexing signal, and send the first wavelength division multiplexing signal to an optical transport unit; the optical transport unit is configured to: receive the first wavelength division multiplexing signal, convert the first wavelength division multiplexing signal into N second optical signals, and correspondingly send the N second optical signals to N second coherent transceivers; and one of the N second coherent transceivers is configured to: receive the N second optical signals, and process the N second optical signals to obtain information in downlink data carried in the N second optical signals.

公开(公告)号：US10530515B2

公开(公告)日：2020-01-07

申请号：US15914716

申请日：2018-03-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ning Deng ,  Shiyi Cao ,  Jun Luo

IPC: H04J14/02 ,  H04B10/2581 ,  H04B10/275 ,  H04Q11/00

Abstract: A node in a wavelength division multiplexing (WDM) system is provided, which includes: a colorless optical transmitter, a first arrayed waveguide grating, a first waveband filter configured to divide an input optical signal into M sub-signals of different wavebands and output to a first optical switch, and a first optical coupler/a first optical combiner. A transmit end of the colorless optical transmitter is coupled to an input end of the first waveband filter via the first arrayed waveguide grating. The first optical switch is configured to connect an output end of the first waveband filter to an input end of the first optical coupler/the first optical combiner according to a control signal. An output end of the first optical coupler/the first optical combiner is coupled to an optical transmission path.

公开(公告)号：US10187176B2

公开(公告)日：2019-01-22

申请号：US15375813

申请日：2016-12-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ning Deng

IPC: H04J14/02 ,  H04B10/548 ,  H04L27/26 ,  H04L5/00

Abstract: A method, an apparatus, and a device for modulating an orthogonal frequency division multiplexing optical signal are provided and relate to the field of optical communications technologies. The method includes: performing bit-to-symbol mapping and serial-to-parallel conversion on a baseband signal to obtain at least two sub symbol sequences of the baseband signal; determining, from all subcarriers of an OFDM signal, a subcarrier used for loading a pilot signal; updating, according to information of the pilot signal, content corresponding to the subcarrier used for loading the pilot signal; and performing inverse discrete Fourier transform, parallel-to-serial conversion, digital-to-analog conversion, and electrical amplification processing on content currently corresponding to all the subcarriers of the OFDM signal, and modulating a light wave by using processed data and a bias electrical signal, to form an OFDM optical signal loaded with the pilot signal.

公开(公告)号：US09749721B2

公开(公告)日：2017-08-29

申请号：US14960703

申请日：2015-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mo Li ,  Ning Deng ,  Qingsong Xue ,  Guowei Gong

IPC: H04B10/61 ,  H04B10/50 ,  H04Q11/00 ,  H04L27/00 ,  H04L27/22 ,  H04L27/38 ,  H04B10/54 ,  H04L27/20 ,  H04L27/36

CPC classification number: H04Q11/0003 ,  H04B10/541 ,  H04B10/695 ,  H04L27/0008 ,  H04L27/2067 ,  H04L27/22 ,  H04L27/361 ,  H04L27/38 ,  H04Q11/0066 ,  H04Q2011/0077

Abstract: The present invention discloses data receiving and sending methods and apparatuses and a system, and relates to the field of communications technologies. The data receiving method includes: receiving a data carrier; deciding polar radius values of multiple labeled constellation points carried at a pre-determined location in the data carrier, to determine a numerical value indicated by a polar radius value of each labeled constellation point in the multiple labeled constellation points; determining, according to a sequence including numerical values indicated by polar radius values of all the labeled constellation points in the multiple labeled constellation points, a demodulation scheme of a constellation point, other than the multiple labeled constellation points, carried in the data carrier; and demodulating, according to the determined demodulation scheme, the constellation point, other than the multiple labeled constellation points, carried in the data carrier.

公开(公告)号：US20160088373A1

公开(公告)日：2016-03-24

申请号：US14960703

申请日：2015-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mo Li ,  Ning Deng ,  Qingsong Xue ,  Guowei Gong

IPC: H04Q11/00 ,  H04B10/54

CPC classification number: H04Q11/0003 ,  H04B10/541 ,  H04B10/695 ,  H04L27/0008 ,  H04L27/2067 ,  H04L27/22 ,  H04L27/361 ,  H04L27/38 ,  H04Q11/0066 ,  H04Q2011/0077

Abstract: The present invention discloses data receiving and sending methods and apparatuses and a system, and relates to the field of communications technologies. The data receiving method includes: receiving a data carrier; deciding polar radius values of multiple labeled constellation points carried at a pre-determined location in the data carrier, to determine a numerical value indicated by a polar radius value of each labeled constellation point in the multiple labeled constellation points; determining, according to a sequence including numerical values indicated by polar radius values of all the labeled constellation points in the multiple labeled constellation points, a demodulation scheme of a constellation point, other than the multiple labeled constellation points, carried in the data carrier; and demodulating, according to the determined demodulation scheme, the constellation point, other than the multiple labeled constellation points, carried in the data carrier.

Abstract translation: 本发明公开了数据接收和发送方法和装置以及系统，涉及通信技术领域。 数据接收方法包括：接收数据载体; 确定在数据载体中的预定位置处携带的多个标记星座点的极半径值，以确定由多个标记星座点中的每个标记星座点的极坐标值指示的数值; 根据包括在所述多个标记星座点中的所有标记星座点的极半径值所指示的数值的序列，确定在所述数据载体中携带的除了所述多个标记星座点之外的星座点的解调方案; 以及根据确定的解调方案，解调在数据载体中承载的除了多个标号的星座点之外的星座点。

公开(公告)号：US20150010299A1

公开(公告)日：2015-01-08

申请号：US14493540

申请日：2014-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yijia Wei ,  Juan Ni ,  Zhiyong Feng ,  Ning Deng

IPC: H04B10/079 ,  H04J14/02 ,  H04B10/60

CPC classification number: H04B10/07953 ,  H04B10/0775 ,  H04B2210/075

Abstract: The present invention discloses a method and an apparatus for detecting an optical signal-to-noise ratio, a node device, and a network system. The method includes: receiving a detected optical signal carrying amplified spontaneous emission ASE noise; detecting a first alternating current component and a first direct current component of the detected optical signal; acquiring first modulation information of the detected optical signal; acquiring first correction information corresponding to the first modulation information according to the first modulation information; and determining an optical signal-to-noise ratio OSNR of the detected optical signal according to the first alternating current component, the first direct current component, and the first correction information.

Abstract translation: 本发明公开了一种用于检测光信噪比的方法和装置，节点装置和网络系统。 该方法包括：接收检测到的携带放大的自发发射ASE噪声的光信号; 检测检测到的光信号的第一交流分量和第一直流分量; 获取检测到的光信号的第一调制信息; 根据第一调制信息获取与第一调制信息对应的第一校正信息; 以及根据第一交流分量，第一直流分量和第一校正信息确定检测到的光信号的光信噪比OSNR。