公开(公告)号：US11646796B2

公开(公告)日：2023-05-09

申请号：US17725373

申请日：2022-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekun Liu ,  Wei Ling ,  Zhicheng Ye

IPC: H04B10/27 ,  H04B10/25 ,  H04Q11/00

CPC classification number: H04B10/27 ,  H04B10/25 ,  H04Q11/0067 ,  H04Q2011/0088

Abstract: The present disclosure relates to information transmission methods in a passive optical network (PON) system. One example method includes sending, by an optical line terminal (OLT), a first power range and time indication to an unregistered optical network unit (ONU), where the first power range and the time indication indicate the ONU to send a serial number of the ONU to the OLT at a time indicated by the time indication in case a downlink receive power of the ONU is within the first power range, and receiving, by the OLT, the serial number of the ONU.

公开(公告)号：US20220256264A1

公开(公告)日：2022-08-11

申请号：US17730668

申请日：2022-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xuming Wu ,  Dekun Liu ,  Shiwei Nie

IPC: H04Q11/00 ,  H04J14/02

Abstract: A communication method, a device, and a system, the method including sending, by an optical line terminal (OLT) of a passive optical network that comprises the OLT and a plurality of optical network units (ONUs), a first downstream frame to the activated ONU using at least one downstream wavelength path, where the OLT and the at least one ONU of the plurality of ONUs communicate with each other using at the least one downstream wavelength path and a plurality of upstream wavelength paths, the plurality of ONUs comprises an activated ONU, wherein the first downstream frame comprises a first path identifier used to identify a first upstream wavelength path, and the first upstream wavelength path is one of the plurality of upstream wavelength paths, and receiving, by the OLT, upstream service data from the activated ONU using the first upstream wavelength path.

公开(公告)号：US20200295870A1

公开(公告)日：2020-09-17

申请号：US16889053

申请日：2020-06-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Jing ,  Bo Gao ,  Shiwei Nie ,  Dekun Liu

IPC: H04L1/00 ,  H03M13/03 ,  H04Q11/00

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.

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：US10129614B2

公开(公告)日：2018-11-13

申请号：US15431390

申请日：2017-02-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bo Gao ,  Dekun Liu ,  Xuming Wu ,  Jianhe Gao

IPC: H04J14/02 ,  H04Q11/00 ,  H04B10/073

Abstract: The present invention discloses a passive optical network communications method: reporting, by an optical network unit, ONU, a calibration record of the ONU, where the calibration record includes an ID of a calibrated wavelength channel; sending a first message to the ONU when the OLT determines, according to the calibration record, that a target wavelength channel ID corresponding to a target wavelength channel to which the ONU needs to switch is not in the calibration record, where the first message includes a forced wavelength switching flag; and instructing the ONU to switch to the calibrated target wavelength channel. In this way, the ONU can implement wavelength switching quickly after calibrating a new wavelength channel so as to perform data communication over the calibrated new wavelength channel.

公开(公告)号：US20180213307A1

公开(公告)日：2018-07-26

申请号：US15909624

申请日：2018-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huafeng Lin ,  Dekun Liu

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0067 ,  H04J14/0236 ,  H04J14/0278 ,  H04J14/0282 ,  H04Q2011/0086 ,  H04Q2011/0088

Abstract: A communication method, apparatus, and system for a passive optical network (PON). The PON includes an optical line terminal (OLT) and a first optical network unit (ONU), where the method includes communicating, by the OLT, with the first ONU using one downlink wavelength (λdx), where the λdx is any one of N downlink wavelengths λd1 to λdN, and communicating, by the OLT, with the first ONU using one uplink wavelength (λu0), where the λu0 is different from any one of M uplink wavelengths λu1 to λuM. The N downlink wavelengths λd1 to λdN and the M uplink wavelengths λu1 to λuM are wavelength values configured for a second ONU, N and M are both integers greater than or equal to 2, and x is any value from 1 to M. Therefore, complexity and costs of the PON system are reduced.