Huawei Technologies Co., Limited

Shiwei Nie

Xuming Wu

Bo Gao

Huafeng Lin

Dekun Liu

Gang Zheng

Xiaofei Zeng

Zhenping Wang

Lei Jing

Jun Luo

Lei Zhou

Shengping Li

Jinrong Yin

Xifeng Wan

Dianbo Zhao

Zhijing Luo

Liming Fang

Xu Wang

Zhiguang Xu

Yinghua Dong

Zhicheng Ye

Guikai Peng

Lun Zhang

Jun Zhou

Linzhi Yan

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.

Data processing method and device

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.

Communication method based on passive optical network, related device, and system

An upstream resource grant method, a device, a passive optical network, and a computer-readable storage medium are provided. The upstream resource grant method includes: obtaining, by an optical line terminal, an upstream grant message on which transformation processing has been performed, wherein a transformation parameter used for the transformation processing includes a physical identity of an optical network unit (ONU); and sending, by the optical line terminal, the upstream grant message on which the transformation processing has been performed, wherein the upstream grant message carries an upstream resource grant indication of the optical network unit, and the upstream resource grant indication indicates an upstream resource granted to the optical network unit. According to this application, an occurrence probability of a rogue ONU phenomenon is reduced, thereby improving service running stability of a PON system.

Upstream resource grant method, related device, and computer-readable storage medium

Embodiments of this application disclose a board, an optical module, a media access control (MAC) chip, a digital signal processor (DSP), and an information processing method. The board in the embodiments of this application includes a MAC chip, a DSP, and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

Board, optical module, OLT, and information processing method

Embodiments of this application disclose a board, an optical module, a MAC chip, a DSP, and an information processing method. The board in the embodiments of this application includes a media access control (MAC) chip, a digital signal processor (DSP), and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

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.

Passive optical network system, optical line terminal, and optical network unit

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.

Data encoding method and apparatus, data decoding method and apparatus, OLT, ONU, and PON system

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.

Passive optical network communication method, apparatus, and system

A downstream data frame transmitting method includes: generating, by an optical line terminal (OLT), a downstream data frame, where the downstream data frame includes a frame header and a payload, the frame header includes a physical synchronization sequence (Psync) field, and the Psync field is used to identify the downstream data frame, where when a value of the Psync field is a first value, the Psync field is further used to indicate that payload data is protected by forward error correction (FEC); or when a value of the Psync field is a second value, the Psync field is further used to indicate that payload data is not protected by FEC; and sending, by the OLT, the downstream data frame. Embodiments of the present invention can reduce a bit error rate of a FEC indication status and improve reliability of the FEC indication status.

Downstream data frame transmission method and device

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.

Ethernet passive optical network communication method, optical network unit, and optical line terminal

The present disclosure relates to passive optical network (PON) systems, optical line terminals (OTLs), and optical network units (ONUs). One example PON system includes an OLT and at least two ONUs. 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 used to control each 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, where a registration function is disabled on the first upstream channel, and enabled on the second upstream channel.

System for registering an ONU to an OLT in a passive optical network system using a dedicated wavelength

The present disclosure provides a method, a system, and an apparatus for data communication in an optical network system. A new encoding scheme is implemented in the following manner: performing 32-bit to 34-bit encoding on a data stream on which 8-bit/10-bit decoding has been performed, performing forward error correction encoding on the data stream on which the 32-bit to 34-bit encoding has been performed, and sending the encoded data stream; or performing forward error correction decoding on a received data stream, and performing 32-bit to 34-bit decoding on the data stream on which the forward error correction decoding has been performed. In this way, a bandwidth resource of a line is saved; line monitoring can be implemented without interrupting a service, which is easy to implement and greatly improves various types of performance of the system.

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Dongguan, China

Shiwei Nie