CN101873519A - Method and device for restarting optical network unit - Google Patents

Method and device for restarting optical network unit Download PDF

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Publication number
CN101873519A
CN101873519A CN201010206041A CN201010206041A CN101873519A CN 101873519 A CN101873519 A CN 101873519A CN 201010206041 A CN201010206041 A CN 201010206041A CN 201010206041 A CN201010206041 A CN 201010206041A CN 101873519 A CN101873519 A CN 101873519A
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onu
message
restarted
restart
information
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CN101873519B (en
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徐群立
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2010/077875 priority patent/WO2011160366A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

The invention discloses a method and a system for restarting an optical network unit; and the method comprises the following steps that: an OLT sends a PLOAM message to an ONU, marking the message type to be 'restart' in the message, and carrying the information for instructing the ONU to be restarted; after receiving the PLOAM message, the ONU analyzes the message; and if the message type is 'restart', judging the need to be restarted according to the information for instructing the ONU to be restarted; and if restart is need, restarting. The invention provides a method for restarting the ONU with the PLOAM message, which is extension of traditional restart methods; and the invention provides the effective restarting method for the fault diagnosis and the processing the ONU under the condition of ONU scattered deployment, improves the fault processing efficiency and saves the maintenance manpower and materials.

Description

A kind of method and device that optical network unit is restarted
Technical field
(Passive Optical Networks, the PON) communications field relate in particular to a kind of method and device that optical network unit is restarted to the present invention relates to EPON.
Background technology
In gigabit than EPON (Gigabit-capable Passive Optical Networks, GPON) in the communication, optical line terminal (Optical Line Termination, OLT) by with optical network unit (Optical Network Unit, ONU) the optical network unit management control interface of Jian Liing (ONUManagement and Control Interface, OMCI) passage is realized management and control to ONU.
Stipulated that in ITU-T Rec.G.984.4 standard OLT restarts the OMCI message of ONU, when OLT is restarted specific ONU at needs, sent to this ONU and to require the OMCI message of restarting that ONU carries out and restarts action after receiving the OMCI message that requires to restart.
By top description as seen, OLT is restarted ONU needs two preconditions:
(1) the OMCI passage of ONU and OLT is normal.
The OMCI passage need correctly be registered at ONU, and can set up after ONU reaches the O5 operating state.
(2) ONU can normal response requires the OMCI message of restarting.
ONU can normal response OMCI message prerequisite be: OMCI functional module and information receiving and transmitting module are working properly.
In actual use, ONU can't reach the O5 state sometimes smoothly after the unlatching that powers on, but rest on the O2-O4 state, even if the OMCI functional module also may occur unusually owing to long-play under the O5 state, OMCI message can't be responded, in these cases, just ONU can't be restarted in the OLT side, must go to handle the wasting manpower and material resources to the ONU distributed points.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and device that optical network unit is restarted, and uses the OMCI mode can't restart under the situation of ONU at OLT, realizes restarting of ONU.
For solving the problems of the technologies described above, a kind of method that optical network unit is restarted of the present invention comprises:
Optical line terminal (OLT) sends physical layer operations to optical network unit (ONU) and administers and maintains (PLOAM) message, and the mark type of message and carries the information that ONU that needs are restarted indicates for restarting in this message;
After ONU receives PLOAM message, resolve this message, if the type of this message is for restarting, then the information of indicating according to the ONU that needs are restarted is judged self whether needs is restarted, and as if needs, then restarts.
Further, if OLT has been known the sign of the ONU that need restart, then, PLOAM message is sent to the ONU that to restart with the identification record of this ONU ONU identification field to PLOAM message;
The information that the ONU that needs are restarted indicates comprises: the SN of information that the SN that carries in sequence number (SN) and the PLOAM message of indication ONU with self compares and the ONU that need restart.
Further, if OLT is not known the sign of the ONU that need restart, then the ONU identification field of PLOAM message is set to invalidly, and the mode that adopts broadcasting sends to whole ONU under it with PLOAM message;
The information that the ONU that needs are restarted indicates comprises: indication ONU with self SN and PLOAM message in the SN of the information that compares of the SN that carries and the ONU that need restart.
Further, the ONU information of indicating according to ONU that needs the are restarted process judging self whether needs are restarted comprises:
After the information that the SN that ONU carries compares, from PLOAM message, parse entrained SN in being resolved to SN and the PLOAM message of indication ONU with self, the SN that parses and the SN of self are compared,, then restart as if identical; Otherwise, abandon PLOAM message.
Further, if OLT restarts the whole ONU it under, then adopt the mode broadcasted that PLOAM message is sent to whole ONU under it;
The information that the ONU that needs are restarted indicates comprises: the information that indication ONU is all restarted;
After ONU receives PLOAM message, parse the indication ONU information of all restarting after, restart.
Further, OLT in message identifier (Message ID) field of PLOAM message the mark type of message for restarting.
Further, a kind of device that optical network unit is restarted comprises: restart control module and restart Executive Module, restart control module and be arranged in the optical line terminal (OLT), restart Executive Module and be arranged in the optical network unit (ONU), wherein:
Restart control module, be used for sending physical layer operations and administering and maintaining (PLOAM) message to restarting Executive Module, the mark type of message and carries the information that ONU that needs are restarted indicates for restarting in this message;
Restart Executive Module, be used for resolving this message after receiving PLOAM message, if the type of this message is for restarting, the ONU under then the information of indicating according to the ONU that needs are restarted is judged whether restart by needs, if need, then restart ONU.
Further, if restart the sign that control module has been known the ONU that need restart,, PLOAM message sent to restart Executive Module then with the identification record of this ONU ONU identification field to PLOAM message;
The information that the ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the sequence number (SN) of ONU and the PLOAM message and the ONU that need restart.
Further, if restart the sign that control module is not known the ONU that need restart, then the ONU identification field of PLOAM message is set to invalidly, and the mode that adopts broadcasting sends to the Executive Module of restarting among whole ONU under it with PLOAM message;
The information that the ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the SN of ONU and the PLOAM message and the ONU that need restart.
Further, if restart control module the whole ONU it are under restarted, then adopt the mode broadcasted PLOAM message to be sent to the Executive Module of restarting of whole ONU under it;
The information that the ONU that needs are restarted indicates comprises: the information that indication is all restarted.
In sum, the present invention is restarted under the invalid situation of ONU in the OMCI mode, utilize ONU can both receive PLOAM (Physical Layer Operations Administration andMaintenance to the O5 state at O2, physical layer operations administers and maintains) mechanism of message, provide and utilized PLOAM message to restart the method for ONU, it is expansion to existing method for restarting, under the condition of ONU dispersed placement, for failure diagnosis and the processing of ONU provides effective method for restarting, improve the efficient of troubleshooting, saved the man power and material who safeguards.
Description of drawings
Fig. 1 is the flow chart of the method that optical network unit is restarted of present embodiment;
Fig. 2 is the schematic diagram of the form of the PLOAM message that adopts in the present embodiment;
Fig. 3 is the Organization Chart of the device that optical network unit is restarted of present embodiment.
Embodiment
Present embodiment is expanded to the PLOAM message that the O5 state can both receive at O2 ONU, is used to control ONU and restarts.All to finish the expansion of PLOAM message in OLT and ONU both sides, when OLT is restarted ONU at needs, issue the PLOAM message of restarting ONU, ONU is after receiving the PLOAM message that requires to restart, judge whether it is that requirement self is restarted, if calling interface is restarted.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
The method that Fig. 1 is restarted optical network unit for present embodiment comprises:
101: carry out the unified expansion of PLOAM message at OLT and ONU side;
OLT and ONU side will be reached an agreement to the expansion of PLOAM message, and the PLOAM message format has 13 bytes as shown in Figure 2.
First byte is the ONU id field, is used to write down the sign of purpose ONU, the address that is designated ONU of ONU.If OLT has been known the sign of the ONU that need restart, then with the identification record of this ONU in the ONU id field.
If in the ONU fault, OLT does not set up with the ONU of fault as yet and communicates by letter, and ONU does not report under the situation of sign, can adopt broadcast mode all ONU under OLT to send PLOAM message, and at this moment, ONU ID is changed to invalid (FFFF).
Second byte is the Message id field, is the sign of PLOAM message, is used to distinguish type of message, and in the present embodiment, definition Message ID equals 0x82 and represents that type of message is for restarting.
The the 3rd to 11 byte is carried the information that ONU that needs are restarted indicates, wherein:
The 3rd byte is Data 1, is defined as follows:
0x00: abandon this message, do not carry out any processing;
0x01: be indication ONU with self SN and PLOAM message in the SN (SerialNumber that carries, sequence number) information that compares, relatively Data 2～Data 9 these 8 bytes whether with self SN coupling, if coupling then expression need be restarted ONU is restarted at once; Otherwise, abandon PLOAM message;
0xFF: ignoring all bytes of back, is the indication ONU information of all restarting, receive this message after, ONU is restarted at once.
The the 4th～11 byte be Data 2 to Data9, these 8 bytes are used to deposit the SN of the ONU that need restart when Data 1 equals 0x01;
The 12 byte is Data 10, keeps, and does not use in the present embodiment.
The 13 byte is CRC (cyclic redundancy check (CRC)).
When the 102:OLT side is restarted ONU at needs, if the OMCI mode is invalid, then make up PLOAM message, the mark type of message and is indicated the ONU that need restart for restarting in message;
The situation that the OMCI mode is invalid comprises: OMCI channel abnormal and ONU can't respond OMCI message etc.
Restart a certain specific ONU if desired, then OLT is changed to 0x01 with Data1 when making up PLOAM message, and Data 2 to Data 9 preserves the SN of the ONU that will restart; If OLT will be restarted all ONU under it, then Data 1 is changed to 0xFF, send PLOAM message then to the ONU under it.
After 103:ONU receives PLOAM message, this PLOAM message is resolved, restart if this PLOAM message indication receives this ONU, then ONU is restarted.
The ONU side is carried out message parse after receiving PLOAM message, if Message ID equals 0x82, next the expression type of message judges the value of Data 1, if equal 0x01 for restarting, then whether SN and the SN of self that compares among the Data 2 to Data 9 be consistent, if consistent, call immediately and restart interface and restart, if inconsistent, then abandon this message, do not deal with; If the value of Data 1 equals 0xFF, call immediately and restart interface and restart.
Light path between ONU and OLT just often, ONU may be in O2 any one state in the O5, ONU all handles the PLOAM message that receives under the free position of O5 at O2.
Fig. 3 is the device that optical network unit is restarted of present embodiment, comprising: restart control module and restart Executive Module, restart control module to be arranged among the OLT, restart Executive Module to be arranged among the ONU, wherein:
Restart control module, be used for sending PLOAM message to restarting Executive Module, the mark type of message and carries the information that ONU that needs are restarted indicates for restarting in this message;
If restart the sign that control module has been known the ONU that need restart,, PLOAM message sent to restart Executive Module then with the identification record of this ONU ONU identification field to PLOAM message; The information that the ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the sequence number (SN) of ONU and the PLOAM message and the ONU that need restart.
If restart the sign that control module is not known the ONU that need restart, then the ONU identification field of PLOAM message is set to invalidly, and the mode that adopts broadcasting sends to the Executive Module of restarting among whole ONU under it with PLOAM message; The information that the ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the SN of ONU and the PLOAM message and the ONU that need restart.
If restart control module the whole ONU it are under restarted, then adopt the mode broadcasted PLOAM message to be sent to the Executive Module of restarting of whole ONU under it; The information that the ONU that needs are restarted indicates comprises: the information that indication is all restarted.
Restart Executive Module, after receiving PLOAM message, resolve this message, if the type of this message is for restarting, then the information of indicating according to the ONU that needs are restarted is judged ONU whether needs is restarted, and as if needs, then restarts ONU.ONU parses entrained SN from PLOAM message after being resolved to the information that SN that indication carries in the SN of ONU and PLOAM message compares, the SN that parses and the SN of self are compared, if identical, then restarts ONU; Otherwise, abandon PLOAM message.After parsing the indication ONU information of all restarting, restart ONU.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

Claims (10)

1. method that optical network unit is restarted comprises:
Optical line terminal (OLT) sends physical layer operations to optical network unit (ONU) and administers and maintains (PLOAM) message, and the mark type of message and carries the information that ONU that needs are restarted indicates for restarting in this message;
Described ONU resolves this message after receiving described PLOAM message, if the type of this message is for restarting, then the information of indicating according to the described ONU that needs are restarted is judged self whether needs is restarted, and as if needs, then restarts.
2. the method for claim 1 is characterized in that:
If described OLT has been known the sign of the ONU that need restart, then the identification record of this ONU is arrived the ONU identification field of described PLOAM message, described PLOAM message is sent to the ONU that described needs are restarted;
The information that the described ONU that needs are restarted indicates comprises: the SN of information that the SN that carries in sequence number (SN) and the described PLOAM message of indication ONU with self compares and the ONU that need restart.
3. the method for claim 1 is characterized in that:
If described OLT is not known the sign of the ONU that need restart, it is invalid that the ONU identification field of then described PLOAM message is set to, and the mode that adopts broadcasting sends to whole ONU under it with described PLOAM message;
The information that the described ONU that needs are restarted indicates comprises: indication ONU with self SN and described PLOAM message in the SN of the information that compares of the SN that carries and the ONU that need restart.
4. as claim 2 or 3 described methods, it is characterized in that the process that the information that described ONU indicates according to the described ONU that needs are restarted is judged self whether needs is restarted comprises:
Described ONU be resolved to described indication ONU with self SN and described PLOAM message in after the information that compares of the SN that carries, from described PLOAM message, parse entrained SN, the SN that parses and the SN of self are compared,, then restart if identical; Otherwise, abandon described PLOAM message.
5. the method for claim 1 is characterized in that:
If described OLT restarts the whole ONU it under, then adopt the mode broadcasted that described PLOAM message is sent to whole ONU under it;
The information that the described ONU that needs are restarted indicates comprises: the information that indication ONU is all restarted;
After described ONU receives described PLOAM message, parse the information that described indication ONU all restarts after, restart.
6. the method for claim 1 is characterized in that:
Described OLT in message identifier (Message ID) field of described PLOAM message the mark type of message for restarting.
7. device that optical network unit is restarted comprises: restart control module and restart Executive Module, describedly restart control module and be arranged in the optical line terminal (OLT), describedly restart Executive Module and be arranged in the optical network unit (ONU), wherein:
Describedly restart control module, be used for restarting Executive Module and sending physical layer operations and administer and maintain (PLOAM) message to described, the mark type of message and carries the information that ONU that needs are restarted indicates for restarting in this message;
Describedly restart Executive Module, be used for after receiving described PLOAM message, resolving this message, if the type of this message is for restarting, ONU under then the information of indicating according to the described ONU that needs are restarted is judged whether restart by needs, if need, then restarts described ONU.
8. device as claimed in claim 7 is characterized in that:
If describedly restart the sign that control module has been known the ONU that need restart, then, described PLOAM message is sent to the described Executive Module of restarting with the identification record of this ONU ONU identification field to described PLOAM message;
The information that the described ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the sequence number (SN) of ONU and the described PLOAM message and the ONU that need restart.
9. device as claimed in claim 7 is characterized in that:
If describedly restart the sign that control module is not known the ONU that need restart, it is invalid that the ONU identification field of then described PLOAM message is set to, and the mode that adopts broadcasting sends to the Executive Module of restarting among whole ONU under it with described PLOAM message;
The information that the described ONU that needs are restarted indicates comprises: the SN of information that indication compares the SN that carries in the SN of ONU and the described PLOAM message and the ONU that need restart.
10. device as claimed in claim 7 is characterized in that:
If describedly restart control module the whole ONU it are under restarted, then adopt the mode broadcasted described PLOAM message to be sent to the Executive Module of restarting of whole ONU under it;
The information that the described ONU that needs are restarted indicates comprises: the information that indication is all restarted.
CN201010206041.8A 2010-06-21 2010-06-21 A kind of method that optical network unit is restarted and device Active CN101873519B (en)

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PCT/CN2010/077875 WO2011160366A1 (en) 2010-06-21 2010-10-19 Method, equipment and optical line terminal for restarting optical network unit

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