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公开(公告)号：US11509395B2
公开(公告)日：2022-11-22
申请号：US17195920
申请日：2021-03-09
发明人： Xuming Wu , Shengping Li , Lei Zhou , Xiaofei Zeng
摘要： 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.
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公开(公告)号：US20190273634A1
公开(公告)日：2019-09-05
申请号：US16413811
申请日：2019-05-16
发明人： Guikai Peng , Huafeng Lin , Shiwei Nie , Xuming Wu , Liming Fang , Yinghua Dong
摘要： A passive optical network communication method, including receiving an Ethernet packet carrying an optical network unit identifier, determining a correspondence between the optical network unit identifier and an optical network unit type according to the optical network unit identifier, determining that an optical network unit that receives the Ethernet packet is a first type of optical network unit, where the optical network unit type includes the first and second type of optical network unit, and a packet receiving rate of the first type is different from that of the second type, determining a correspondence between the optical network unit type and a channel according to the first type, determining a channel corresponding to the first type, encapsulating the Ethernet packet into a gigabit-capable passive optical network encapsulation method (GEM) frame, and sending the GEM frame to the first type of optical network unit using the determined channel.
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公开(公告)号：US20230044724A1
公开(公告)日：2023-02-09
申请号：US17962840
申请日：2022-10-10
发明人： Xuming Wu , Shengping Li , Lei Zhou , Xiaofei Zeng
摘要： 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.
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公开(公告)号：US20230006766A1
公开(公告)日：2023-01-05
申请号：US17940209
申请日：2022-09-08
发明人： Xuming Wu , Shiwei Nie , Xu Wang
摘要： A data processing method and a device, the method including determining, by an optical network unit, in a received data stream, after the optical network unit enters a pre-synchronization state, a position of a forward error correction (FEC) codeword boundary in the data stream based on a position of a physical synchronization sequence (Psync) field, performing an FEC codeword decoding check, where the Psync field is a field that matches a preset Psync, in the data stream, and entering, by the optical network unit, a synchronization state in response to an FEC codeword among N consecutive FEC codewords in the data stream passing the decoding check, where N is an integer greater than or equal to 1.
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公开(公告)号：US20210194588A1
公开(公告)日：2021-06-24
申请号：US17195920
申请日：2021-03-09
发明人： Xuming Wu , Shengping Li , Lei Zhou , Xiaofei Zeng
摘要： 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.
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公开(公告)号：US10805007B2
公开(公告)日：2020-10-13
申请号：US16298677
申请日：2019-03-11
发明人： Zhenping Wang , Bo Gao , Shiwei Nie , Lei Jing , Xuming Wu
摘要： Embodiments of the present invention disclose an EPON communication method, an ONU, and an OLT. The method includes: generating, by an ONU, a first control frame, where the first control frame includes a first data field, and the first data field includes a bandwidth requirement of the at least one LLID; and sending, by the ONU, the first control frame to an OLT. In addition, the OLT generates a second control frame, where the second control frame includes a second data field, and the second data field includes grant information of the at least one LLID; and the OLT sends the second control frame to the ONU. In the embodiments of the present invention, the first control frame may carry bandwidth requirements of a plurality of LLIDs, so that one first control frame can be used to report bandwidth requirements of a plurality of LLIDs.
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公开(公告)号：US20190157832A1
公开(公告)日：2019-05-23
申请号：US16252090
申请日：2019-01-18
发明人： Xuming Wu , Huafeng Lin , Liming Fang
摘要： Embodiments of the present invention disclose a wavelength shift control method and system, to implement stable control over temperature of a laser to ensure that a transmit wavelength of the laser is stable in a burst work process of a transmitter and is not shifted to avoid impact on normal work of a PON system with a plurality of wavelength paths. The method includes: generating a burst control signal; sending the burst control signal to a controller; and controlling switch statuses of a laser and a heater according to the received burst control signal, where when a switch of the laser is in an on state, a switch of the heater is in an off state, and when a switch of the laser is in an off state, a switch of the heater is in an on state, so that a temperature of the laser remains stable.
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公开(公告)号：US11063783B2
公开(公告)日：2021-07-13
申请号：US16413811
申请日：2019-05-16
发明人： Guikai Peng , Huafeng Lin , Shiwei Nie , Xuming Wu , Liming Fang , Yinghua Dong
摘要： A passive optical network communication method, including receiving an Ethernet packet carrying an optical network unit identifier, determining a correspondence between the optical network unit identifier and an optical network unit type according to the optical network unit identifier, determining that an optical network unit that receives the Ethernet packet is a first type of optical network unit, where the optical network unit type includes the first and second type of optical network unit, and a packet receiving rate of the first type is different from that of the second type, determining a correspondence between the optical network unit type and a channel according to the first type, determining a channel corresponding to the first type, encapsulating the Ethernet packet into a gigabit-capable passive optical network encapsulation method (GEM) frame, and sending the GEM frame to the first type of optical network unit using the determined channel.
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公开(公告)号：US10939190B2
公开(公告)日：2021-03-02
申请号：US16164309
申请日：2018-10-18
发明人： Bo Gao , Dekun Liu , Xuming Wu , Jianhe Gao
IPC分类号： H04J14/02 , H04Q11/00 , H04B10/073
摘要： 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.
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公开(公告)号：US20230123881A1
公开(公告)日：2023-04-20
申请号：US18067394
申请日：2022-12-16
发明人： Xuming Wu
IPC分类号： H04Q11/00
摘要： This application provides a training sequence determining method and a related device. The method in embodiments of this application includes: An ONU receives a first message sent by an OLT. Then, the ONU determines a target training sequence based on the first message, where the target training sequence is used to determine a working parameter of an equalizer in the OLT. Further, the ONU generates a first data frame including the target training sequence. In this application, the OLT may perform training based on the received target training sequence to determine the working parameter of the equalizer in the OLT.
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