WO2017032077A1

WO2017032077A1 - Device and method for providing compatibility with passive optical networks, optical line terminal, and storage medium

Info

Publication number: WO2017032077A1
Application number: PCT/CN2016/082187
Authority: WO
Inventors: 郭继正; 陈钦树
Original assignee: 深圳市中兴微电子技术有限公司
Priority date: 2015-08-27
Filing date: 2016-05-16
Publication date: 2017-03-02
Also published as: CN106488346A; CN106488346B

Abstract

Disclosed is a device for providing compatibility with passive optical networks, wherein two uplink burst clock and data recovery units respectively recover received uplink data in accordance with two standards, and respectively transmit the recovered uplink data to their respective uplink delineation, descrambling and forward error correction (FEC) decoding units; then the two uplink delineation, descrambling and FEC decoding units perform delineation on the received recovered uplink data in accordance with two standards, and after the delineation is successful, transmit processed Gigabit Passive Optical Network Transmission Convergence (GTC) frames to a GTC deframing unit; finally, the GTC deframing unit transmits the deframed data to different processing units for processing. Also disclosed are a method for providing compatibility with passive optical networks, an optical line terminal, and a computer storage medium.

Description

Passive optical network compatible device and implementation method, optical line terminal and storage medium

Technical field

The present invention relates to a passive optical network (PON) system transmission technology, and in particular to a passive optical network compatible device and an implementation method thereof, an optical line terminal (OLT) and a computer storage medium.

Background technique

XGPON (X GPON) is a new generation PON network standard evolved from Gigabit-Capable Passive Optical Network (GPON). XGPON is divided into asymmetric 10 Gigabit passive optical networks. And symmetric 10G passive optical network, wherein the asymmetric 10G passive optical network can be called XGPON1, and the symmetric 10G passive optical network can be called XGPON2. The rate supported by XGPON1 is: 2.48832 Gbps uplink and 9.95328 Gbps downlink; the rate supported by XGPON 2 is 9.95328 Gbps upstream and 9.95328 Gbps downstream.

The ITU-T 987.x protocol family of XGPON1 was approved in June 2010. The OLT devices and Optical Network Unit (ONU) devices of XGPON1 were widely introduced to the market, such as voice call services and video. Call service, video on demand service, interactive network television (IPTV), etc., users are increasingly demanding network speed, especially the popularity of Fiber To The Home (FTTH), which further promotes the development of XGPON network. . Broadband broadcasting has been doubling the network bandwidth since 1985, on average, for five to six years.

In 2013, it was called the first year of XGPON. There were operators in the world releasing the market demand for XGPON equipment. China Telecom decided to open the XGPON equipment program in the same year. Major telecom equipment suppliers have successively launched OLT equipment, ONU equipment, and chip solutions. With With the widespread promotion of mobile network 3G and 4G networks and the advent of the media era, users are increasingly demanding broadband, especially the uplink data will explode, which will promote the transition of XGPON1 to XGPON2. For a long time in the future, XGPON1 and XGPON2 will coexist, and the existing OLT cannot be compatible with both devices. How to adapt to these two ONU devices is compatible with XGPON1 and XGPON2, making the cost lower. The evolution is smoother, which will be a problem for operators and equipment manufacturers.

Summary of the invention

In order to solve the existing technical problems, embodiments of the present invention are directed to provide a passive optical network compatible device and an implementation method thereof, an optical line terminal, and a computer storage medium, which are compatible with two passive optical networks, namely XGPON1 and XGPON2, thereby enabling Passive optical networks can evolve smoothly.

The technical solution of the embodiment of the present invention is implemented as follows:

An embodiment of the present invention provides a passive optical network compatible device, including: a first uplink burst clock and data recovery unit, a second uplink burst clock and a data recovery unit, and a first uplink delimitation, descrambling, and FEC translation. a code unit, a second uplink delimitation, descrambling and FEC decoding unit, an uplink control unit, and a GTC deframing unit; wherein

The first uplink burst clock and data recovery unit and the second uplink burst clock and data recovery unit are configured to recover the uplink data of the optical network unit ONU by using different standards, and send the restored uplink data to the first uplink respectively. Delimited, descrambled and FEC coding units and second uplink delimited, descrambled and FEC decoding units;

The first uplink delimiting, descrambling and FEC decoding unit and the second uplink delimiting, descrambling and FEC decoding unit are configured to process received recovered uplink data by using different standards, respectively, and After the boundary is successful, sending the delimitation success information to the uplink control unit, and transmitting the GTC frame to the GTC deblocking unit;

The uplink control unit is configured to control the first uplink delimitation, descrambling and FEC decoding unit or the second uplink delimitation, descrambling and FEC decoding unit according to the received delimitation success information Data processing;

The GTC demapping unit is configured to deframe the received GTC frame, and send the deframed data to different processing units for processing.

In the above solution, the first uplink delimiting, descrambling and FEC decoding unit and the second uplink delimiting, descrambling and FEC decoding unit are configured as:

Performing descrambling and FEC decoding processing on the received recovered uplink data according to the control of the uplink control unit, and transmitting the processed GTC frame to the GTC deframe unit.

In the foregoing solution, the uplink control unit is configured to:

Determining a successfully delimited uplink delimitation, descrambling, and FEC decoding unit and ONU rate information according to the received delimitation success information;

Controlling the delimited first uplink, de-scrambling, and FEC decoding unit to perform descrambling and FEC decoding processing;

If two delimited success information are received at the same time, one of the delimited success information is processed according to the preset priority, and another delimitation success information is discarded;

The ONU rate information is sent to the GTC demapping unit.

In the above solution, the GTC demapping unit is configured to:

Deframe the GTC frame according to the frame header indication content of the received GTC frame, and distinguish the physical layer operation management and maintenance PLOAM message, the dynamic bandwidth allocation unit DBRu message, and the service container TCONT content;

Adding the received ONU rate information to the PLOAM information;

The PLOAM message, the DBRu message, and the TCONT content are sent to different processing units for processing.

In the above solution, the device further includes: an application management software unit, configured to:

Receiving the PLOAM information sent by the GTC demapping unit;

And transmitting, according to the sequence number SN of the SN-Response and the ONU rate information, the sequence number included in the PLOAM information, and sending the corresponding optical network unit identity number ONUID to the ONU.

In the above solution, the first uplink burst clock and data recovery unit and the first uplink delimitation, descrambling, and FEC decoding unit use the first standard processing data;

The second uplink burst clock and data recovery unit and the second uplink delimiting unit, the descrambling and FEC decoding unit use the second standard to process data;

The first standard is an asymmetric 10 Gigabit passive optical network XGPON1 standard;

The second standard is the symmetric 10G passive optical network XGPON2 standard.

The embodiment of the invention further provides a method for implementing passive optical network compatibility, including:

Restore ONU uplink data by using different standards respectively;

The received recovered uplink data is processed by different standards respectively, and after the demarcation is successful, the descrambling and FEC decoding are performed by using the standard adopted by the demarcation success, and the processed GTC frame is transmitted;

The received GTC frame is deframed, and the deframed data is sent to different processing units for processing.

In the above solution, the de-framing the received GTC frame, and sending the de-framed data to different processing units for processing includes:

Deframe the GTC frame according to the content of the frame header of the received GTC frame, and distinguish the PLOAM message, the DBRu message, and the TCONT content;

Adding ONU rate information corresponding to the standard adopted by the demarcation success to the PLOAM message;

In the above solution, the method further includes:

And transmitting, according to the sequence number SN of the SN-Response and the ONU rate information, the sequence number included in the PLOAM information, and sending the corresponding optical network unit identity identifier number ONUID to the ONU.

An embodiment of the present invention further provides an optical line terminal OLT including the foregoing passive optical network. Capacity device.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to implement the foregoing passive optical network compatible implementation method.

The passive optical network compatible device and the implementation method thereof, the optical line terminal and the computer storage medium provided by the embodiments of the present invention, the two uplink burst clocks and the data recovery unit respectively recover the received uplink data according to two standards, and The recovered uplink data is respectively sent to respective uplink demarcation, descrambling and Forward Error Correction (FEC) decoding units; and then two uplink delimitation, descrambling and FEC decoding units respectively press The two standards demarcate the recovered uplink data received by each of the two standards. After the demarcation is successful, the GTC frame is transmitted to the GPON Transmission Convergence (GTC) deframing unit. The GTC frame is processed. The deframing unit sends the deframed data to different processing units for processing; thereby, one device can simultaneously satisfy the transmission requirements of the XGPON1 and XGPON2 two rate data, and can achieve two passive optical networks compatible with XGPON1 and XGPON2. The purpose is to make the passive optical network evolve more smoothly and make the cost lower.

DRAWINGS

1 is a schematic structural diagram of a passive optical network compatible device according to an embodiment of the present invention;

FIG. 2 is a schematic flowchart diagram of a method for implementing passive optical network compatibility according to an embodiment of the present invention.

detailed description

In the embodiment of the present invention, the first uplink burst clock and data recovery unit and the second uplink burst clock and the data recovery unit respectively recover the received uplink data according to the two standards, and send the restored uplink data to the first An uplink delimiting, descrambling and FEC decoding unit and a second uplink delimiting, descrambling and FEC decoding unit; a first uplink delimiting, descrambling and FEC decoding unit and said second uplink delimitation, solution The interference and FEC decoding units respectively perform uplinks on the received recovery according to two criteria. After the data is delimited, after the demarcation is successful, the GTC frame is sent to the GTC deframe unit; the data obtained by the deframe is sent by the GTC deframe unit to different processing units for processing.

The present invention will be further described in detail below with reference to the embodiments.

The passive optical network compatible device provided by the embodiment of the present invention, as shown in FIG. 1 , includes:

First uplink burst clock and data recovery unit 11, second uplink burst clock and data recovery unit 12, first uplink delimitation, descrambling and FEC decoding unit 13, second uplink delimitation, descrambling and FEC translation a code unit 14, an uplink control unit 15, and a GTC deframing unit 16; wherein

The first uplink burst clock and data recovery unit 11 and the second uplink burst clock and data recovery unit 12 are configured to recover ONU uplink data by using different standards, respectively, and send the restored uplink data to the first uplink. a boundary, descrambling and FEC decoding unit 13 and a second uplink delimiting, descrambling and FEC decoding unit 14;

Specifically, the first uplink burst clock and data recovery unit 11 restores the ONU uplink data by using the first standard, and sends the restored uplink data to the first uplink delimitation, descrambling and FEC decoding unit 13; The clock and data recovery unit 12 recovers the ONU uplink data by using the second standard, and transmits the restored uplink data to the second uplink delimitation, descrambling and FEC decoding unit 14, the first standard being the XGPON1 standard, The second standard is the XGPON2 standard.

The first uplink delimiting, descrambling and FEC decoding unit 13 and the second uplink delimiting, descrambling and FEC decoding unit 14 are configured to perform data on the received recovered uplink data by using different standards respectively. Processing; and after the demarcation succeeds, sending the delimitation success information to the uplink control unit 15, and transmitting the GTC frame to the GTC deframing unit 16;

Specifically, the first uplink delimitation, descrambling, and FEC decoding unit 13 delimits the received recovered uplink data by using a first criterion, and if the demarcation is successful, sends a notification to the uplink control unit 15. Demarcation success information; the second uplink delimitation, descrambling and FEC decoding unit 14 delimits the received recovered uplink data by using a second criterion, and if the demarcation is successful, sends the uplink data to the uplink control unit 15 Delimited success information; wherein the first criterion is XGPON1 Standard, the second standard is the XGPON2 standard.

Thereafter, according to the control of the uplink control unit 15, the first uplink delimitation, descrambling and FEC decoding unit 13 and the second uplink delimitation, descrambling and FEC decoding unit 14 respectively receive the recovered The uplink data is descrambled and FEC decoded, and the processed GTC frame is sent to the GTC deframing unit 16;

The uplink control unit 15 is configured to control the first uplink delimitation, descrambling and FEC decoding unit 13 or the second uplink delimiting, descrambling and FEC decoding unit 14 according to the received delimitation success information. Data processing;

Specifically, after receiving the demarcation success information sent by the first uplink delimitation, descrambling and FEC decoding unit 13 and/or the second uplink delimitation, descrambling and FEC decoding unit 14, the uplink control unit 15 First, it is determined which uplink delimitation, descrambling, and FEC decoding unit sends the delimitation success information. If two delimitation success information are received at the same time, one of the delimited success information is processed according to the preset priority, and the processing is abandoned. Another delimited success information, after determining the uplink delimitation, descrambling, and FEC decoding unit for transmitting the delimited success information, controlling the delimited upper bound, descrambling, and FEC decoding unit for descrambling and FEC decoding deal with;

In one embodiment, the first uplink demarcation, descrambling, and FEC decoding unit 14 employs a first criterion in accordance with the first uplink delimiting, descrambling, and FEC decoding unit 14, which employs the principles of the second standard. The uplink control unit 15 can determine the criteria adopted by the uplink delimitation, descrambling, and FEC decoding unit and the standard corresponding by determining the uplink delimitation, descrambling, and FEC decoding unit that sends the delimitation success information. The ONU uplink data rate information, that is, the ONU rate information, sends the acquired ONU rate information to the GTC deframing unit 16.

The GTC demapping unit 16 is configured to deframe the received GTC frame, and send the de-framed data to different processing units for processing;

Specifically, the GTC demapping unit 16 deframes the GTC frame according to the content of the frame header indication of the received GTC frame, and distinguishes physical layer operation management and maintenance (Physical Layer Operations). And Maintenance, PLOAM) message, dynamic bandwidth allocation unit DBRu (Dynamic Bandwidth Allocation Unit, DBRu) message, Transaction Containers (TCONT) content, and add the received ONU rate information to the PLOAM information, the TCONT content The PLOAM message and the DBRu message are sent to different processing units for processing.

The passive optical network compatible device provided by the embodiment of the present invention further includes: an application management software unit 17 configured to receive the PLOAM information sent by the GTC demapping unit 16 according to a sequence number response included in the PLOAM information ( The serial number SN of the Serial Number-Response, SN-Response, and the ONU rate information, the corresponding optical network unit identity number ONUID is sent to the ONU through the downlink data to distinguish different types of ONUs, so as to implement two types of XGPON1 and XGPON2. Management of ONU.

Specifically, in the ONU registration process, after receiving the serial number request (SN-Request), the ONU sends an SN-Response, and the SN-Response data passes through the first uplink burst clock and the data recovery unit 11 and the The two uplink burst clock and data recovery unit 12 performs data recovery, and the recovered data is output to the first uplink delimitation, descrambling and FEC decoding unit 13 and the second uplink delimitation, descrambling and FEC decoding unit 14; An uplink delimiting, descrambling and FEC decoding unit 13 and a second uplink delimiting, descrambling and FEC decoding unit 14 first delimit, if the demarcation is successful, the demarcation success information is sent to the uplink control unit 15, Since the first uplink delimiting, descrambling, and FEC decoding unit 13 and the second uplink delimiting, descrambling, and FEC decoding unit 14 employ different standards, only one uplink delimiting, descrambling, and FEC decoding unit can Successfully delimiting; the uplink control unit 15 learns the criteria used for the demarcation success according to the demarcation success information, and controls the delimited and de-scrambled and FEC decoding units to perform descrambling and FEC decoding processing. GTC frame is sent to the GTC de-frame At the same time, the standard used for the successful delimitation and the ONU uplink data rate information corresponding to the standard, that is, the ONU rate information, are sent to the GTC de-frame unit 16, and the GTC de-frame unit 16 indicates the content according to the frame header of the received GTC frame. Data flow Deframing, distinguishing the PLOAM message, the DBRu message, the TCONT content, adding the received ONU rate information to the PLOAM information, and transmitting the PLOAM information to the application management software unit 17; the application management software unit 17 according to the PLOAM information The SN-Response SN and ONU rate information is sent by the downlink data stream to the ONU that sends the SN-Response and its corresponding ONUID, and can be managed by distinguishing different types of ONUs according to the ONUID.

Based on the foregoing passive optical network compatible device, the embodiment of the present invention further implements a passive optical network compatible implementation method. As shown in FIG. 2, the method includes the following steps:

Step 201: Restore ONU uplink data by using different standards respectively.

Step 202: Delimit the received uplink data by using different standards, and after the demarcation is successful, perform descrambling and FEC decoding using the criteria used for the demarcation success, and send the processed GTC frame;

Specifically, the received uplink data of the ONU is restored by using two standards, and the restored data stream is delimited by the same standard as the previous step. If the demarcation is successful, the recovered data stream is solved by the same standard. The interference and FEC decoding process, the processed data forms a GTC frame, wherein the two standards are the XGPON1 standard and the XGPON2 standard.

Step 203: Deframe the received GTC frame, and send the deframed data to different processing units for processing.

Specifically, the GTC frame is de-framed according to the frame header indication content of the received GTC frame, and the PLOAM message, the DBRu message, and the TCONT content are distinguished; and the ONU rate information corresponding to the standard used in the delimiting of the step 202 is added to the PLOAM message; sending PLOAM message, DBRu message, TCONT content to different processing units for processing;

In one embodiment, the method further comprising: the SN-Response PLOAM message contains the SN of the ONU and rate information, the respective optical network unit transmits the identification number of the body parts to ONUID ONU.

Specifically, in the ONU registration process, the ONU sends after receiving the SN-Request. SN-Response uses two standards to recover SN-Response data. The recovered data stream is delimited by the same standard as the previous one. If the demarcation is successful, the recovered data stream is still descrambled by the same standard. And the FEC decoding process, the processed data forms a GTC frame, and the ONU rate information is determined according to the standard adopted by the demarcation success; the content stream is de-framed according to the frame header indication content of the received GTC frame, and the PLOAM message and the DBRu are distinguished. The message, the TCONT content, and the received ONU rate information is added to the PLOAM information, and the ONU that sends the SN-Response is sent through the downlink data stream according to the SN and the ONU rate information of the SN-Response in the PLOAM information. The rate corresponding to the ONUID can be managed subsequently by different types of ONUs according to the ONUID, wherein the two standards are the XGPON1 standard and the XGPON2 standard.

The embodiment of the present invention further provides a passive optical network compatible optical line terminal, where the passive optical network compatible optical line terminal includes: an optical module, a GPON encapsulation mode (GEM) de-frame. The unit, the bandwidth dynamic allocation (DBA) unit, the uplink reassembly and scheduling processing unit, and the downlink data part further include a passive optical network compatible device. As shown in FIG. 1, the device includes:

The first uplink burst clock and data recovery unit 11 and the second uplink burst clock and data recovery unit 12 are configured to recover the uplink data of the ONU by using different standards, and send the restored uplink data to the first uplink separately. Delimited, descrambled and FEC decoding unit 13 and second uplink delimited, descrambled and FEC decoding unit 14;

Specifically, the optical module performs photoelectric conversion, converts an uplink optical signal of the ONU into an electrical signal, and transmits the converted ONU uplink data to the first uplink burst clock and the data recovery unit and the second uplink burst clock and data. The recovery unit, the first uplink burst clock and data recovery unit 11 restores the ONU uplink data by using the first standard, and transmits the restored uplink data to the first uplink delimitation, descrambling and FEC decoding unit 13; The clock and data recovery unit 12 recovers the ONU uplink data by using the second standard, and transmits the restored uplink data to the second uplink delimitation, descrambling and FEC decoding unit 14, the first standard being the XGPON1 standard, The second standard is the XGPON2 standard.

Specifically, the first uplink delimitation, descrambling, and FEC decoding unit 13 delimits the received recovered uplink data by using a first criterion, and if the demarcation is successful, sends a notification to the uplink control unit 15. Demarcation success information; the second uplink delimitation, descrambling and FEC decoding unit 14 delimits the received recovered uplink data by using a second criterion, and if the demarcation is successful, sends the uplink data to the uplink control unit 15 Delimiting success information; wherein the first standard is an XGPON1 standard, and the second standard is an XGPON2 standard;

Thereafter, according to the control of the uplink control unit 15, the first uplink delimitation, descrambling and FEC decoding unit 13 and the second uplink delimitation, descrambling and FEC decoding unit 14 respectively receive the recovered The uplink data is subjected to descrambling and FEC decoding processing, and the processed GTC frame is transmitted to the GTC deframing unit 16.

Optionally, according to the first uplink delimitation, descrambling and FEC decoding unit 13, the first criterion is adopted, and the second uplink delimitation, descrambling and FEC decoding unit 14 adopts the principle of the second standard. The uplink control unit 15 can determine the standards adopted by the uplink delimitation, descrambling, and FEC decoding units and the ONUs corresponding to the standards by determining the uplink delimitation, descrambling, and FEC decoding units that transmit the demarcation success information. The uplink data rate information, that is, the ONU rate information, sends the acquired ONU rate information to the GTC deframing unit 16.

The uplink control unit 15 is responsible for converting the DBA unit to the uplink processing item, and performing control management on each unit;

Specifically, the GTC demapping unit 16 deframes the GTC frame according to the frame header indication content of the received GTC frame, distinguishes the PLOAM message, the DBRu message, the TCONT content, and adds the received ONU rate information to the In the PLOAM information, the GTC demapping unit sends the TCONT content, the PLOAM message, and the DBRu message to different processing units for processing, and the GTC defragment unit sends the TCONT content to the GEM deframe unit, and the GEM deframe unit parses the User data is sent to the upstream reassembly and scheduling processing unit.

The passive optical network compatible device provided by the embodiment of the present invention further includes: an application management software unit 17 configured to receive the PLOAM information sent by the GTC demapping unit 16, according to the The SN of the SN-Response and the ONU rate information included in the PLOAM information are sent to the ONU through the downlink data to distinguish different types of ONUs to implement management of two types of ONUs, XGPON1 and XGPON2.

Specifically, in the ONU registration process, after receiving the SN-Request, the ONU sends an SN-Response, and the SN-Response data passes through the first uplink burst clock and data recovery unit 11 and the second uplink burst clock and data recovery unit 12 Data recovery is performed, the recovered data is output to the first uplink delimitation, descrambling and FEC decoding unit 13 and the second uplink delimitation, descrambling and FEC decoding unit 14; the first uplink delimitation, descrambling and FEC translation The code unit 13 and the second uplink delimiting, descrambling and FEC decoding unit 14 first delimit, if the demarcation is successful, the demarcation success information is sent to the uplink control unit 15, due to the first uplink delimitation, descrambling and The FEC decoding unit 13 and the second uplink delimiting, descrambling and FEC decoding unit 14 use different standards, so that only one uplink delimiting, descrambling and FEC decoding unit can be successfully delimited; the uplink control unit 15 The success information of the bounds is used to learn the criteria used for the demarcation success, and the delimited and FEC decoding unit that controls the demarcation success is descrambled and FEC decoded, and the GTC frame is sent to the GTC deblocking unit 16; At the same time, the standard used for successful delimitation The ONU uplink data rate information corresponding to the standard, that is, the ONU rate information is sent to the GTC de-frame unit 16, and the GTC de-frame unit 16 de-frames the data stream according to the frame header indication content of the received GTC frame, and distinguishes the PLOAM message, The DBRu message, the TCONT content, adds the received ONU rate information to the PLOAM information, and sends the PLOAM information to the application management software unit 17; the application management software unit 17 according to the SN and the ONU of the SN-Response in the PLOAM information The rate information is sent by the downlink data stream to the ONU that sends the SN-Response and its corresponding ONUID, and can be managed by distinguishing different types of ONUs according to the ONUID.

In an actual application, the first uplink burst clock and data recovery unit 11, the second uplink burst clock and data recovery unit 12, the first uplink delimitation, descrambling and FEC decoding unit 13, the second uplink Bound, descrambling and FEC decoding unit 14, uplink control unit 15 and GTC deframe unit 16 can be a central processing unit (CPU, Central Processing Unit), or digital signal processing (DSP, Digital Signal Processor), or a microprocessor (MPU, Micro Processor Unit), or field programmable gate array (FPGA, Field Programmable Gate Array) and so on. Specifically, the first uplink burst clock and data recovery unit 11, and the second uplink burst clock and data recovery unit 12 may be implemented by a clock restorer; a first uplink delimitation, descrambling and FEC decoding unit 13, and The second uplink delimiting, descrambling and FEC decoding unit 14 may be implemented by a descrambling + decoder; the uplink control unit 15 may be implemented by a controller, and the GTC deframe unit 16 may be implemented by a controller; the application management software unit 17 Can be implemented by the manager.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

In the embodiment of the present invention, the two uplink burst clocks and the data recovery unit respectively recover the received uplink data according to two standards, and send the restored uplink data to respective uplink delimitation, descrambling, and FEC translation. a code unit; and then two uplink demarcation, descrambling, and FEC decoding units respectively delimit the respective received uplink data according to two standards, and after the demarcation is successful, the GTC deframe unit sends the processing completion. The GTC frame is finally sent by the GTC deframe unit to the different processing units for processing. Therefore, one device can simultaneously satisfy the transmission requirements of the two rate data of XGPON1 and XGPON2, and can achieve the purpose of compatible with two passive optical networks of XGPON1 and XGPON2, thereby making the evolution of the passive optical network smoother and lowering the cost.

Claims

A passive optical network compatible device, the device comprising: a first uplink burst clock and data recovery unit, a second uplink burst clock and data recovery unit, a first uplink delimitation, descrambling and FEC decoding unit, a second uplink delimiting, descrambling, and forward error correction FEC decoding unit, an uplink control unit, and a Gigabit passive optical network transmission aggregation GTC deframing unit;

The first uplink burst clock and data recovery unit and the second uplink burst clock and data recovery unit are configured to recover the uplink data of the optical network unit ONU by using different standards, and send the restored uplink data to the first uplink respectively. Delimited, descrambled and FEC coding units and second uplink delimited, descrambled and FEC decoding units;

The first uplink delimiting, descrambling and FEC decoding unit and the second uplink delimiting, descrambling and FEC decoding unit are configured to process received recovered uplink data by using different standards, respectively, and After the boundary is successful, sending the delimitation success information to the uplink control unit, and transmitting the GTC frame to the GTC deblocking unit;

The uplink control unit is configured to control, according to the received delimitation success information, the first uplink delimitation, descrambling, and FEC decoding unit or the second uplink delimitation, descrambling, and FEC decoding unit to perform data processing ;

The GTC demapping unit is configured to deframe the received GTC frame, and send the deframed data to different processing units for processing.
The apparatus of claim 1, wherein the first uplink delimiting, descrambling and FEC coding unit and the second uplink delimiting, descrambling and FEC decoding unit are configured to:

Performing descrambling and FEC decoding processing on the received recovered uplink data according to the control of the uplink control unit, and transmitting the processed GTC frame to the GTC deframe unit.
The device according to claim 1, wherein the uplink control unit is configured to:

Determining the definitely bounded uplink delimitation, descrambling, and based on the received demarcation success information FEC decoding unit and ONU rate information;

Controlling the delimited first uplink, de-scrambling, and FEC decoding unit to perform descrambling and FEC decoding processing;

If two delimited success information are received at the same time, one of the delimited success information is processed according to the preset priority, and another delimitation success information is discarded;

The ONU rate information is sent to the GTC demapping unit.
The apparatus according to claim 1 or 3, wherein the GTC deframe unit is configured to:

Deframe the GTC frame according to the frame header indication content of the received GTC frame, and distinguish the physical layer operation management and maintenance PLOAM message, the dynamic bandwidth allocation unit DBRu message, and the service container TCONT content;

Adding the received ONU rate information to the PLOAM information;

The PLOAM message, the DBRu message, and the TCONT content are sent to different processing units for processing.
The apparatus of claim 4, wherein the apparatus further comprises an application management software unit configured to:

Receiving the PLOAM information sent by the GTC demapping unit;

And transmitting, according to the sequence number SN of the SN-Response and the ONU rate information, the sequence number included in the PLOAM information, and sending the corresponding optical network unit identity identifier number ONUID to the ONU.
The device according to claim 1, wherein

The first uplink burst clock and data recovery unit and the first uplink delimitation, descrambling and FEC decoding unit adopt first standard processing data;

The second uplink burst clock and data recovery unit and the second uplink delimiting unit, the descrambling and FEC decoding unit use the second standard to process data;

The first standard is an asymmetric 10 Gigabit passive optical network XGPON1 standard;

The second standard is the symmetric 10G passive optical network XGPON2 standard.
A passive optical network compatible implementation method, the method comprising:

Restoring the ONU uplink data of the optical network unit by using different standards;

The received recovered uplink data is processed by different standards, and after the demarcation is successful, the descrambling and forward error correction FEC decoding is performed by using the standard adopted by the demarcation success, and the processed Gigabit passive optical network is transmitted. Transmit aggregate GTC frames;

The received GTC frame is deframed, and the deframed data is sent to different processing units for processing.
The method according to claim 7, wherein the de-framing the received GTC frame and transmitting the de-framed data to different processing units for processing comprises:

Deframe the GTC frame according to the content of the frame header of the received GTC frame, and distinguish the PLOAM message, the DBRu message, and the TCONT content;

Adding ONU rate information corresponding to the standard adopted by the demarcation success to the PLOAM message;

The PLOAM message, the DBRu message, and the TCONT content are sent to different processing units for processing.
The method of claim 8 wherein the method further comprises:

And transmitting, according to the sequence number SN of the SN-Response and the ONU rate information, the sequence number included in the PLOAM information, and sending the corresponding optical network unit identity identifier number ONUID to the ONU.
An optical line termination OLT, the OLT comprising at least a passive optical network compatible device according to any of the preceding claims 1 to 6.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 7 to 9.