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公开(公告)号：US20230388017A1
公开(公告)日：2023-11-30
申请号：US18446611
申请日：2023-08-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda Huang , Xin Zhang , Tianhai Chang
IPC: H04B10/291 , G02B6/28
CPC classification number: H04B10/291 , G02B6/2804
Abstract: An optical coupler, a communication method, and a communication system are provided. The communication system includes N transmitters, M receivers, and an optical coupler, where both N and M are positive integers greater than 1. Each of the N transmitters is configured to send one first optical signal to the optical coupler. The optical coupler is configured to couple N first optical signals sent by the N transmitters into one second optical signal and to broadcast the second optical signal to the M receivers. Each of the M receivers is configured to receive the second optical signal sent by the optical coupler and to demodulate the second optical signal.
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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：US11611816B2
公开(公告)日：2023-03-21
申请号：US17333177
申请日：2021-05-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Junling Xiang , Hong Yang , Tianhai Chang
Abstract: This application discloses a service data processing method and device. A transmit-end device may generate an optical transport network (OTN) encapsulated signal carrying service data, and generate at least n FlexO (flexible optical transport network) frames based on the OTN encapsulated signal and send the at least n FlexO frames, where r FlexO frames in the at least n FlexO frames carry service check data, and the service check data may be used to restore the service data when bit error rates of k FlexO frames are greater than a reference bit error rate. In this way, if no more than r physical ports included in a FlexO group interface fail, or a bit error rate of no more than r FlexO frames is greater than the reference bit error rate due to another reason, a receive-end device may restore the service data through a received FlexO frame.
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公开(公告)号：US20200186273A1
公开(公告)日：2020-06-11
申请号：US16716060
申请日：2019-12-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tianhai Chang
Abstract: A method and an apparatus for spectrum defragmentation, where the method includes: obtaining, by a transmit end, a target data stream; sending the target data stream on one line using a to-be-adjusted frequency band; adjusting, on another line, an occupied frequency band of the target data stream from the to-be-adjusted frequency band to a target frequency band; switching the target data stream to the other line; and transmitting the target data stream using the target frequency band.
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Patent Agency Ranking
公开(公告)号：US20250158717A1
公开(公告)日：2025-05-15
申请号：US19026094
申请日：2025-01-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qiguang Feng , Liangchuan Li , Tianhai Chang
Abstract: This application discloses a transmission method, which includes: An optical transmitting device generates a first transmission frame, where the first transmission frame includes a first sequence and a second sequence, the first sequence corresponds to a first single-frequency signal and a second single-frequency signal in frequency domain, a frequency of the first single-frequency signal is fixed in a first time period, a frequency of the second single-frequency signal is fixed in the first time period, and the first time period is at least a part of a time period in which the optical transmitting device sends the first sequence; and a difference between signal amplitudes of a frequency-domain signal corresponding to the second sequence in frequency domain at any two frequencies in first bandwidth is less than a first threshold.
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公开(公告)号：US20240137675A1
公开(公告)日：2024-04-25
申请号：US18544932
申请日：2023-12-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeshan Chang , Tianhai Chang , Ning Deng
IPC: H04Q11/00
CPC classification number: H04Q11/0062 , H04Q11/0005 , H04Q2011/0032 , H04Q2011/0073
Abstract: A communication system, a transmitter, and a communication method. The communication system includes M transmitters, N receivers, and an optical switch network. Both N and M are positive integers greater than 1. The optical switch network includes one or more optical switches. A plurality of optical paths are configured in the optical switch network. When the transmitter communicates with the receiver, the transmitter can determine, from the plurality of optical paths, a target optical path from a source communication node to a destination communication node. After the optical switch network receives a target optical signal sent by the transmitter, the optical switch directly sends the target optical signal to the receiver based on the target optical path.
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17.发明授权公开(公告)号：US10911137B2
公开(公告)日：2021-02-02
申请号：US16735890
申请日：2020-01-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Enbo Zhou , Tianhai Chang
IPC: H04B17/00 , H04B10/077 , H04B10/25 , H04J14/02
Abstract: This application discloses an optical amplifier apparatus including a first amplifier unit and a hybrid filter unit. The first amplifier unit is configured to receive a first beam including signal light and first monitoring light. The first amplifier unit is further configured to amplify the first beam to obtain a second beam. The hybrid filter unit is configured to: receive the second beam output by the first amplifier unit, and separate the first monitoring light and the signal light from the second beam. The hybrid filter unit is further configured to: transmit the first monitoring light in the second beam to a monitoring light detection apparatus of a first station through a first output port. The hybrid filter unit is further configured to: perform gain flattening filtering processing on the signal light in the second beam to obtain filtered signal light, and output the filtered signal light.
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公开(公告)号：US10200771B2
公开(公告)日：2019-02-05
申请号：US15668481
申请日：2017-08-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Buyun Wang , Xinhua Xiao , Tianhai Chang
IPC: H04Q11/00 , H04L12/24 , H04L12/927 , H04L12/933
Abstract: A service switching system and a service switching method, where the system includes at least two service processing subracks and at least one optical cross-connect subrack. Each service processing subrack is connected to each optical cross-connect subrack using an optical fiber. Each service processing subrack is configured to perform service switching for an externally inputted service data electrical signal, and then convert it into an optical signal, and send to one or more optical cross-connect subracks, or vice versa. Each optical cross-connect subrack is configured to receive a service data optical signal from one or more service processing subracks and perform optical cross-connection for the service data optical signal, and then output the service data optical signal to the one or more service processing subracks, which reduce interconnection costs of the service switching system.
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公开(公告)号：US20170359638A1
公开(公告)日：2017-12-14
申请号：US15668481
申请日：2017-08-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Buyun Wang , Xinhua Xiao , Tianhai Chang
IPC: H04Q11/00 , H04L12/927 , H04L12/24
CPC classification number: H04Q11/0067 , H04L41/0896 , H04L41/50 , H04L47/805 , H04L49/15 , H04Q11/0005 , H04Q11/0071 , H04Q2011/0039 , H04Q2011/005 , H04Q2011/0084 , H04Q2011/0088
Abstract: A service switching system and a service switching method, where the system includes at least two service processing subracks and at least one optical cross-connect subrack. Each service processing subrack is connected to each optical cross-connect subrack using an optical fiber. Each service processing subrack is configured to perform service switching for an externally inputted service data electrical signal, and then convert it into an optical signal, and send to one or more optical cross-connect subracks, or vice versa. Each optical cross-connect subrack is configured to receive a service data optical signal from one or more service processing subracks and perform optical cross-connection for the service data optical signal, and then output the service data optical signal to the one or more service processing subracks, which reduce interconnection costs of the service switching system.
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