公开(公告)号：US20240080095A1

公开(公告)日：2024-03-07

申请号：US18506656

申请日：2023-11-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Wang ,  Feng Xia ,  Gang Zheng

IPC: H04B10/03

CPC classification number: H04B10/03

Abstract: In accordance with an embodiment, a method includes determining, by a standby optical line terminal (OLT), that a primary OLT has stopped sending a downlink optical signal over a first management channel; sending, by the standby OLT, a ranging request to a first optical network unit (ONU), over a second management channel, where the first ONU is one of the at least one ONU, and the second management channel is a channel between the standby OLT and the at least one ONU; and obtaining, by the standby OLT, a distance parameter between the first ONU and the standby OLT based on a ranging response received from the first ONU over the second management channel.

公开(公告)号：US20240048240A1

公开(公告)日：2024-02-08

申请号：US18489235

申请日：2023-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Zheng

IPC: H04B10/278 ,  H04B10/40

CPC classification number: H04B10/278 ,  H04B10/40

Abstract: In a method, an optical head end first determines a first correspondence, where the first correspondence indicates a correspondence between a slave station device identifier and a slave station node identifier. Then the optical head end receives a first message from an optical terminal, where the first message includes device information, the device information includes a first device identifier, and the first device identifier indicates a first slave station connected to the optical terminal. Then, the optical head end determines, from the first correspondence, a first node identifier corresponding to the first device identifier. Further, the optical head end sends the first node identifier to the optical terminal.

公开(公告)号：US20240048237A1

公开(公告)日：2024-02-08

申请号：US18490966

申请日：2023-10-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yi Feng ,  Ling Li ,  Gang Zheng

IPC: H04B10/079

CPC classification number: H04B10/0795

Abstract: A link status measurement method includes: A first OLT sends first indication information to a first ONU through a first port. The first ONU is one of at least one ONU included in a PON, and the first indication information indicates a measurement window for measuring the first ONU. The first OLT obtains quality of a signal corresponding to the first ONU. The quality of the signal is quality of a signal received by a second port on a second OLT from a first PON channel in a measurement window, and the first PON channel is a channel carried on a link between the second port and the first ONU. The first OLT determines a status of a backbone link based on quality of a signal corresponding to each ONU in the PON. The backbone link is a common part of a link from the second port to each ONU.

公开(公告)号：US20210266090A1

公开(公告)日：2021-08-26

申请号：US17318334

申请日：2021-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lun Zhang ,  Xifeng Wan ,  Gang Zheng

IPC: H04J14/02 ,  H04Q11/00

Abstract: This application discloses a bandwidth allocation method, an optical line terminal (OLT), an optical network unit (ONU), and a system, where the method includes receiving a bandwidth request from each ONU, where the ONU includes an ONU1, generating a bandwidth map (BWMap) message according to bandwidth requested by the ONU and bandwidth configured for the ONU, where the BWMap message includes a first allocation identifier (Alloc-ID1), a first time corresponding to the Alloc-ID1, a second allocation identifier (Alloc-ID2), and a second time corresponding to the Alloc-ID2, and both the Alloc-ID1 and the Alloc-ID2 are allocated to the ONU1 for use, and sending the BWMap message to each ONU. Therefore, a problem that a transmission delay does not satisfy a requirement when a passive optical network (PON) system is applied to mobile backhaul is resolved, a data transmission rate and data transmission efficiency are improved, and user satisfaction is improved.

公开(公告)号：US20180083964A1

公开(公告)日：2018-03-22

申请号：US15824441

申请日：2017-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zengjiang Guo ,  Gang Zheng

IPC: H04L29/06 ,  H04B10/27

CPC classification number: H04L63/0876 ,  G06Q30/0601 ,  H04B10/27 ,  H04B10/50 ,  H04B10/66 ,  H04L41/00

Abstract: A method for authenticating an optical network unit (ONU) and devices for an optical line terminal (OLT) and an optical network unit (ONU) where an ONU is not allowed to be migrated in an authorized manner to an OLT of another vendor for use and binds the ONU and a particular vendor. The method also includes, when an ONU goes online, obtaining, by the OLT, first vendor information of the ONU, where the first vendor information is vendor information of a vendor to which the ONU belongs; comparing, by the OLT, the first vendor information with second vendor information, where the second vendor information is vendor information of a vendor to which the OLT belongs; and if a comparison result indicates that the OLT and the ONU belong to different vendors, determining, by the OLT, that authentication on the ONU fails.

公开(公告)号：US09866317B2

公开(公告)日：2018-01-09

申请号：US15196480

申请日：2016-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaofei Zeng ,  Sanzhong Li ,  Gang Zheng

IPC: H04B10/079 ,  H04J14/08 ,  H04B10/272

CPC classification number: H04B10/07955 ,  H04B10/272 ,  H04J14/08

Abstract: Embodiments disclose a method and an apparatus for detecting power of an uplink optical signal, an optical line terminal, and an optical network system. The method includes: separately generating a triggering signal that is used for detecting optical power for each uplink optical signal among multiple uplink optical signals to be detected, where the triggering signal of each uplink optical signal has same duration. The method also includes separately detecting power of each uplink optical signal in the duration of the triggering signal of each uplink optical signal.

公开(公告)号：US11722217B2

公开(公告)日：2023-08-08

申请号：US17859029

申请日：2022-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuming Xie ,  Jian Li ,  Xin Xiao ,  Gang Zheng

IPC: H04B10/079 ,  H04Q11/00 ,  H04J14/08

CPC classification number: H04B10/0793 ,  H04J14/086 ,  H04Q11/0067 ,  H04Q2011/0073 ,  H04Q2011/0084

Abstract: Embodiments of this application provide a method and an apparatus for obtaining optical distribution network (ODN) logical topology information, a device, and a storage medium. The method includes: obtaining identification information of each first ONU that is connected to a first passive optical network (PON) port and whose optical path changes and feature data of the first ONU in a first time window, where the feature data includes receive optical power and/or an alarm event; obtaining, based on the feature data of each first ONU, a feature vector corresponding to each first ONU; and performing cluster analysis on the feature vector corresponding to each first ONU, to obtain topology information corresponding to the first PON port. ONU topology information is obtained by analyzing an ONU feature.

公开(公告)号：US11374674B2

公开(公告)日：2022-06-28

申请号：US16988066

申请日：2020-08-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huafeng Lin ,  Jinrong Yin ,  Dianbo Zhao ,  Xifeng Wan ,  Shiwei Nie ,  Gang Zheng ,  Zhijing Luo ,  Xiaofei Zeng ,  Jun Luo

IPC: H04J14/02

Abstract: The present disclosure relates to passive optical network (PON) systems, an optical line terminal (OLT), and an optical network unit (ONU). One example PON system includes an OLT and at least two ONUs, and the OLT and the ONUs exchange data on one downstream channel and two upstream channels. The OLT sends downstream data to each ONU on the downstream channel, where the downstream data includes an upstream bandwidth grant which is used to control the ONU to send upstream data. Each ONU receives the downstream data on the downstream channel, and sends the upstream data on a first upstream channel or a second upstream channel based on the upstream bandwidth grant included in the downstream data. The OLT receives, on the first upstream channel and the second upstream channel, the upstream data sent by each ONU.

公开(公告)号：US09859975B2

公开(公告)日：2018-01-02

申请号：US15176845

申请日：2016-06-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaofei Zeng ,  Sanzhong Li ,  Gang Zheng

IPC: H04B10/07 ,  H04B10/079 ,  H04B10/27

CPC classification number: H04B10/0793 ,  H04B10/07 ,  H04B10/0795 ,  H04B10/27

Abstract: An apparatus and a method for detecting an uplink optical signal. The apparatus includes a memory and a processor, where the processor is configured to determine a remaining bandwidth in a target uplink frame as a test window, where the remaining bandwidth in the target uplink frame indicates an unallocated bandwidth in the target uplink frame, and detect an uplink optical signal in the determined test window. Therefore, a remaining bandwidth obtained after bandwidth allocation in a target uplink frame is used to detect an uplink optical signal, which can effectively use a resource without the need of independently opening a test window and using an extra resource to detect the uplink optical signal, thereby avoiding waste of a resource and improving test efficiency.

公开(公告)号：US20240048877A1

公开(公告)日：2024-02-08

申请号：US18489489

申请日：2023-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Zheng

IPC: H04Q11/00 ,  H04L69/22

CPC classification number: H04Q11/0066 ,  H04L69/22

Abstract: This application provides a system for device control based on optical communication. A device supporting optical communication is introduced into a conventional system for device control. The system includes a first controller, a first optical head-end, a first optical terminal, and a first field device. The first controller communicates with the first field device through the first optical head-end. The first field device communicates with the first controller through the first optical terminal. The first optical head-end communicates with the first optical terminal through an optical signal.