CN113395611B - Optical network unit and dual-mode optical module registration method - Google Patents

Optical network unit and dual-mode optical module registration method Download PDF

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Publication number
CN113395611B
CN113395611B CN202010164225.6A CN202010164225A CN113395611B CN 113395611 B CN113395611 B CN 113395611B CN 202010164225 A CN202010164225 A CN 202010164225A CN 113395611 B CN113395611 B CN 113395611B
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optical module
mode optical
registration
mode
state
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CN113395611A (en
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孙慧
张东
金嘉亮
张德智
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0079Operation or maintenance aspects

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  • Computer Networks & Wireless Communication (AREA)
  • Optical Communication System (AREA)

Abstract

The disclosure provides an optical network unit and a dual-mode optical module registration method, and relates to the field of communication. The optical network unit comprises a first mode optical module and a second mode optical module; the first mode optical module initiates registration to an optical line terminal and sends registration information obtained in the registration process to the second mode optical module; the second mode optical module completes the registration process by using the registration information received from the first mode optical module without independently initiating a registration process, thereby greatly improving the registration efficiency and the online efficiency of the dual-mode optical module.

Description

Optical network unit and dual-mode optical module registration method
Technical Field
The present disclosure relates to the field of communications, and in particular, to an optical network unit and a dual-mode optical module registration method.
Background
An Optical Network Unit (ONU) includes a Gigabit-Capable Passive Optical Network (GPON) Optical module and an xGPON (i.e., 10Gbit/s Passive Optical Network) Optical module. According to the industry standard, a GPON Optical module and an xGPON Optical module respectively and independently initiate a registration process to an Optical Line Terminal (OLT).
The inventor finds that the GPON optical module and the xGPON optical module are respectively and independently registered, so that the registration efficiency is low, and the online efficiency of the optical module is influenced.
Disclosure of Invention
The inventor finds that the registration flows and the registration information of the GPON optical module and the xGPON optical module have the same part, so in order to improve the registration efficiency and the online efficiency of the dual-mode optical module, the optical module in the ONU initiates registration to the OLT first, and then sends the registration information obtained in the registration process to another optical module, so that the other optical module can complete the registration process by using the registration information of the other optical module without independently initiating a registration flow, thereby greatly improving the registration efficiency and the online efficiency of the dual-mode optical module.
Some embodiments of the present disclosure provide a dual-mode optical module registration method, where an optical network unit includes a first mode optical module and a second mode optical module, and the method includes:
the first mode optical module initiates registration to an optical line terminal and sends registration information obtained in the registration process to a second mode optical module;
the second mode optical module completes a registration process using registration information received from the first mode optical module.
In some embodiments, the registration information obtained in the registration process includes configuration file information obtained in a standby state, an optical network unit identifier obtained in a serial number state, and an equalization delay obtained in a ranging state.
In some embodiments, the second mode optical module skips the standby state, the serial number state, and the ranging state from the initial state by using the registration information received from the first mode optical module, and directly enters the running state to complete the registration process.
In some embodiments, further comprising: the second mode optical module judges validity of the registration information of the first mode optical module, and performs a step of completing a registration process by using the registration information received from the first mode optical module in the case of judging the validity.
In some embodiments, the second mode light module determining validity of the registration information of the first mode light module comprises:
and the second mode optical module judges whether a first mode optical module of an optical network unit corresponding to the optical network unit identifier is in an operating state or not according to the optical network unit identifier in the received registration information, and if the first mode optical module is in the operating state, the registration information of the first mode optical module is judged to be effective.
In some embodiments, the first mode optical module is a gigabit-capable passive optical network, GPON, optical module, and the second mode optical module is an xGPON optical module; or, the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
Some embodiments of the present disclosure provide an optical network unit, including:
the optical line terminal comprises a first mode optical module and a second mode optical module, wherein the first mode optical module is configured to initiate registration to the optical line terminal and send registration information obtained in the registration process to the second mode optical module;
a second mode optical module configured to complete a registration procedure using registration information received from the first mode optical module.
In some embodiments, the registration information obtained in the registration process includes configuration file information obtained in a standby state, an onu identifier obtained in a serial number state, and an equalization delay obtained in a ranging state; and the second mode optical module is configured to skip the standby state, the serial number state and the ranging state from the initial state by using the registration information received from the first mode optical module, directly enter the running state and complete the registration process.
In some embodiments, the second mode optical module is further configured to determine validity of the registration information of the first mode optical module, and if the validity is determined, perform the step of completing the registration process by using the registration information received from the first mode optical module.
In some embodiments, the first mode optical module is a gigabit-capable passive optical network GPON optical module, and the second mode optical module is an xGPON optical module; or, the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
Some embodiments of the present disclosure propose a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the dual mode light module registration method described in any of the embodiments.
Drawings
The drawings that are required to be used in the embodiments or the related art description will be briefly described below. The present disclosure will be more clearly understood from the following detailed description, which is given with reference to the accompanying drawings,
it is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without undue inventive faculty.
Fig. 1 is a flowchart illustrating a dual mode optical module registration method according to some embodiments of the present disclosure.
Fig. 2 is a flowchart illustrating a dual-mode optical module registration method according to another embodiment of the disclosure.
Fig. 3A shows a schematic diagram of a separate registration flow of a GPON optical module and an xGPON optical module in the prior art.
Fig. 3B illustrates a high efficiency registration flow diagram of an embodiment of the disclosure.
Fig. 4 is a schematic diagram of an optical network unit according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
The optical network unit comprises a first mode optical module and a second mode optical module which are optical modules with two different modes and are called dual-mode optical modules. For example, the first mode optical module is a GPON optical module, and the second mode optical module is an xGPON optical module; or the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
The optical module (optical module) is composed of an optoelectronic device, a functional circuit, an optical interface and the like, wherein the optoelectronic device comprises a transmitting part and a receiving part. The optical module has the function of photoelectric conversion, the transmitting part converts an electric signal into an optical signal, and the receiving part converts the optical signal into the electric signal.
Fig. 1 is a flowchart illustrating a dual-mode optical module registration method according to some embodiments of the disclosure.
As shown in fig. 1, the method of this embodiment includes:
in step 110, the first mode optical module initiates registration to the optical line terminal, and sends registration information obtained in the registration process to the second mode optical module.
The registration process of the first mode optical module goes through at least 5 states, wherein 2 nd to 4 th states obtain registration information, and the following states are specifically as follows:
1) Initial-state (set to O1)
The ONU in this state is still in LOS/LOF (LOSs Of Signal/LOSs Of Frame) immediately after power-on. Upon receiving the downstream, the LOS and LOF are removed and the ONU transitions to standby state (O2).
2) Standby-state (O2 is set)
The ONU in this state has received the downstream and waits to receive the network parameters. After receiving the Upstream _ Overhead message, the ONU performs relevant configuration (configuration file information includes, for example, configuration information of registration stages such as Upstream and downstream bandwidth capabilities, virtual Local Area Network (VLAN) authentication, quality of Service (QoS), and the like) according to the Network parameters, and transfers the ONU to a serial number state (O3).
3) Serial Number State Serial-Number-state (set to O3)
The OLT sends a Serial-Number Request message to all ONUs in this state to discover new ONUs and their Serial numbers. When the OLT discovers a new ONU, the ONU waits for the OLT to assign it an ONU-ID (optical network unit identity). The OLT assigns the ONU-ID by an Assign _ ONU-ID message. The ONU shifts to the ranging state (O4) after acquiring the ONU-ID.
4) Ranging state Ranging-state (set as O4)
The different ONUs transmit signals to the OLT in synchronization, for which each ONU requires an equalization delay, which is measured in the ranging state. The ONU transitions to the operating state (O5) after receiving the Ranging _ Time message.
5) Operation-state (set to O5)
The ONU in this state may receive and transmit information, for example, transmit uplink data and PLOAM (Physical Layer operation Administration and Maintenance) messages under the control of the OLT, and the ONU in this state may also establish other connections according to requirements. After ranging is successful, all ONUs transmit signals according to their respective equalization delays to keep synchronization of the upstream frame, i.e., signals transmitted by different ONUs will reach the OLT respectively, but each signal will appear exactly at the position where it should appear in the upstream frame.
Based on the description of the registration process of the first mode optical module, the first mode optical module sends the registration information obtained in the registration process, such as configuration file information obtained in a standby state, an optical network unit identifier obtained in a serial number state, an equalization delay obtained in a ranging state, and the like, to the second mode optical module.
The second mode light module selectively performs step 120 after step 110, or directly performs step 130.
In step 120, the second mode optical module determines validity of the registration information of the first mode optical module. In the case where it is determined to be valid, step 130 is executed again. Thus, the security of registration is improved.
The determining, by the second mode optical module, validity of the registration information of the first mode optical module includes, for example: and the second mode optical module judges whether the first mode optical module of the optical network unit corresponding to the optical network unit identifier is in the running state or not according to the optical network unit identifier in the received registration information, and if the first mode optical module is in the running state, the registration information of the first mode optical module is judged to be effective.
In step 130, the second mode optical module completes the registration process using the registration information received from the first mode optical module.
Specifically, the second mode optical module skips the standby state, the serial number state, and the ranging state from the initial state by using the registration information received from the first mode optical module, and directly enters the operating state to complete the registration process.
In the embodiment, one optical module in the ONU initiates registration to the OLT, and then sends the registration information obtained in the registration process to another optical module, so that the other optical module can complete the registration process by using the registration information of the other optical module without independently initiating a registration process, thereby greatly improving the registration efficiency and the online efficiency of the dual-mode optical module.
The dual-mode optical module registration method is described below by taking an application scenario in which a GPON optical module initiates registration and then sends registration information to an xGPON optical module, so that the xGPON optical module completes a registration process by using the GPON optical module as an example.
Fig. 2 is a flowchart illustrating a dual mode optical module registration method according to another embodiment of the disclosure.
As shown in fig. 2, the method of this embodiment includes:
in step 210, the gpon optical module is just powered on, is in Initial-state (set to O1), is still in LOS/LOF, and assuming that downstream is received, LOS and LOF are eliminated, the ONU transitions to standby state (O2).
In step 220, the gpon optical module is in Standby state Standby-state (set to O2), waits for receiving network parameters, and after receiving an Upstream _ Overhead message, performs relevant configuration according to the network parameters (configuration file information includes, for example, configuration information of registration stages such as Upstream and downstream bandwidth capabilities, authentication VLAN, qoS, etc.), and shifts to serial number state (O3).
In step 230, the gpon optical module is in Serial-Number-state (set to O3), waits for the OLT to Assign an ONU-ID (optical network unit identifier) to it, obtains the ONU-ID from it after receiving the Assign _ ONU-ID message sent by the OLT, and moves to ranging state (O4).
In step 240, the gpon optical module is in Ranging-state (set to O4), obtains the equalization delay through measurement, and transitions to the running state (O5) when receiving a Ranging _ Time message.
In step 250, the gpon optical module is in an Operation-state (set to O5), and can receive and transmit information, for example, transmit uplink data and PLOAM (Physical Layer Operations, administration and Maintenance) messages under the control of the OLT. At this time, the GPON optical module sends registration information, such as configuration file information obtained in a standby state, an optical network unit identifier obtained in a serial number state, an equalization delay obtained in a ranging state, and the like, to the xGPON optical module.
In step 260, the xgpon optical module is just powered on and in an Initial-state (set to O1), and when the registration information sent by the GPON optical module is received and verified to be valid (the verification method may refer to the foregoing), the operation state is directly transferred to (O5).
In step 270, the xgpon optical module is in an Operation-state (set to O5), and can receive and transmit information, for example, transmit uplink data and PLOAM (Physical Layer Operations, administration and Maintenance) messages under the control of the OLT.
In the embodiment, the GPON optical module in the ONU initiates registration to the OLT, and then sends the registration information obtained in the registration process to the xGPON optical module, so that the xGPON optical module can complete the registration process by using the registration information of the GPON optical module without separately initiating a registration process, thereby greatly improving the registration efficiency and online efficiency of the dual-mode optical module.
Fig. 3A illustrates a separate registration flow of a GPON optical module and an xGPON optical module in the related art, and fig. 3B illustrates a high efficiency registration flow of an embodiment of the present disclosure. By comparing fig. 3A and fig. 3B, it can be seen that, the xGPON optical module utilizes the registration information of the GPON optical module, saves the processes of the standby state, the serial number state, the ranging state, and the like, can directly enter the operating state from the initial state, and greatly improves the registration efficiency and the online efficiency of the dual-mode optical module.
Fig. 4 is a schematic diagram of an optical network unit according to some embodiments of the present disclosure.
As shown in fig. 4, the optical network unit 400 of this embodiment includes:
the first mode optical module 410 is configured to initiate registration with an optical line terminal, and send registration information obtained in a registration process to the second mode optical module. Wherein, the registration information obtained in the registration process comprises configuration file information obtained in a standby state, an optical network unit identification obtained in a serial number state, and a balance time delay obtained in a ranging state
A second mode optical module 420 configured to complete a registration procedure using the registration information received from the first mode optical module.
In some embodiments, the second mode optical module 420 is configured to skip the standby state, the serial number state, and the ranging state from the initial state to the operating state by using the registration information received from the first mode optical module, and complete the registration process.
In some embodiments, the second mode optical module 420 is further configured to determine validity of the registration information of the first mode optical module, and if the validity is determined, perform the step of completing the registration process by using the registration information received from the first mode optical module.
In some embodiments, the first mode optical module is a GPON optical module and the second mode optical module is an xGPON optical module; or the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
The present disclosure also provides a Passive Optical Network (PON) system, which includes an Optical network unit 400 and an Optical line terminal. The ONU 400 initiates registration to the olt, which returns information such as network parameters, ONU-ID, ranging _ Time message (used to determine equalization delay), and the like.
The present disclosure also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the dual mode optical module registration method of any of the foregoing embodiments.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more non-transitory computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (10)

1. A dual mode optical module registration method, wherein an optical network unit includes a first mode optical module and a second mode optical module, the method comprising:
the first mode optical module initiates registration to an optical line terminal and sends registration information obtained in the registration process to a second mode optical module;
the second mode optical module skips the standby state, the serial number state and the ranging state from the initial state by using the registration information received from the first mode optical module, and directly enters the running state to complete the registration process.
2. The method according to claim 1, wherein the registration information obtained during the registration process includes profile information obtained in a standby state, an onu identity obtained in a serial number state, and an equalization delay obtained in a ranging state.
3. The method of claim 1, further comprising:
the second mode optical module judges validity of the registration information of the first mode optical module, and performs a step of completing a registration process by using the registration information received from the first mode optical module in the case of judging the validity.
4. The method of claim 3, wherein the second mode light module determining validity of the registration information of the first mode light module comprises:
and the second mode optical module judges whether the first mode optical module of the optical network unit corresponding to the optical network unit identifier is in an operating state or not according to the optical network unit identifier in the received registration information, and if the first mode optical module is in the operating state, the registration information of the first mode optical module is judged to be valid.
5. The method according to any one of claims 1 to 4,
the first mode optical module is a gigabit-capable passive optical network (GPON) optical module, and the second mode optical module is an xGPON optical module;
or, the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
6. An optical network unit, comprising:
the optical line terminal comprises a first mode optical module and a second mode optical module, wherein the first mode optical module is configured to initiate registration to the optical line terminal and send registration information obtained in the registration process to the second mode optical module;
and the second mode optical module is configured to skip the standby state, the serial number state and the ranging state from the initial state by using the registration information received from the first mode optical module, directly enter the running state and complete the registration process.
7. The optical network unit of claim 6,
the registration information obtained in the registration process includes configuration file information obtained in a standby state, an optical network unit identifier obtained in a serial number state, and a balance time delay obtained in a ranging state.
8. Optical network unit according to claim 6,
the second mode optical module is further configured to determine validity of the registration information of the first mode optical module, and if the validity is determined, perform a step of completing a registration process by using the registration information received from the first mode optical module.
9. Optical network unit according to any of claims 6 to 8,
the first mode optical module is a gigabit-capable passive optical network (GPON) optical module, and the second mode optical module is an xGPON optical module;
or, the second mode optical module is a gigabit-capable passive optical network GPON optical module, and the first mode optical module is an xGPON optical module.
10. A non-transitory computer readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the dual mode light module registration method as claimed in any one of claims 1 to 5.
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