CN103546833A - Service restoration method and system in Gigabit Passive Optical Network (GPON) - Google Patents

Service restoration method and system in Gigabit Passive Optical Network (GPON) Download PDF

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CN103546833A
CN103546833A CN201210236759.0A CN201210236759A CN103546833A CN 103546833 A CN103546833 A CN 103546833A CN 201210236759 A CN201210236759 A CN 201210236759A CN 103546833 A CN103546833 A CN 103546833A
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mib
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gpon
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recovery
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CN103546833B (en
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黄志成
张珠明
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Song Yixiao
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Shanghai Feixun Data Communication Technology Co Ltd
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Abstract

The invention discloses a service restoration method in a Gigabit Passive Optical Network (GPON). The service restoration method includes: S1 judging the variety of Management Information Banks (MIBs), and entering S2 if the MIBs are built locally, or entering S3 if the MIBs are built by an Optical Line Terminal (OLT), or entering S6 if the MIBs are extended Virtual Local Area Network (VLAN) marked operation configuration data or have multicast operational attributes; S2 storing the MIBs to MIB global variables; S3 judging whether to restore the MIBs in the message creating or arrangement format, entering S4 if the MIBs are restored in the message creating format, or entering S5 if the MIBs are restored in the message arrangement format; S4 restoring the MIBs in the message creating format; S5 restoring the MIBs in the message arrangement format; S6 updating the global variables one by one circularly and performing arrangement restoration; S7 updating logic code values of the MIB global variables in a database. The invention further discloses a service restoration system in the GPON. The service restoration method and system improve data restoration accuracy and avoid data loss.

Description

Service restoration method in GPON and system
Technical field
The present invention relates to a kind of GPON(G bit passive optical network) in service restoration method and system, particularly relate to a kind of automatic recovery OLT(Optical Line Terminal, optical line terminal, for connecting the terminal equipment of fiber optic backbone) service restoration method and the system of the GPON of issuing service.
Background technology
GPON (Gigabit-Capable PON) technology is that the latest generation broadband passive light based on ITU-TG.984.x standard comprehensively accesses standard, because of many merits such as it have high bandwidth, high efficiency, coverage is large and user interface is abundant, by most of operators, be considered as realizing Access Network business broadband, the desirable technique of synthesization transformation.
With all PON(Passive Optical Network, passive optical-fiber network) system is the same, GPON is by ONU(Optical Network Unit, optical network unit), OLT and passive light distribution network form.OLT provides the interface between network side and core net for Access Network, by ODN(Optical Distribution Node, Optical Distribution Node) be connected with each ONU.As the Core Feature equipment of PON system, OLT has concentrated allocated bandwidth, controls each ONU, the function of monitoring, operation maintenance management PON system in real time.
At OLT, send after configuration information, ONU system operator can be saved in all configuration informations in database or configuration file, also has the ONU system of part producer design there is no store configuration information, not supporting business restore funcitons at all.For existing network requirement, OLT can issue a large amount of configuration informations, for the operations such as foundation to the legitimate verification of ONU equipment, the identification of ONU device type, ONU system PON link layer passage.The time cost that is completed these operations by OLT is huge, and OLT own system resources consumption is simultaneously also large, and therefore, the function of business recovery will be a vital function for GPON.
According to ITU-T standard agreement standard G.988, after each ONU starts, whether OLT can go the synchronous code of comparison ONU consistent with the synchronous code in this ONU information of preserving before it, if unanimously no longer issuing service configuration, need ONU to recover voluntarily to restart front business configuration, i.e. business recovery.
Some system is by each sublayer recovery configuring information separately in addition, but for the system of operation more complicated, needs to come through consultation recovery configuring between each layer, and simple can not meet demand from configuration documentation recovery.ONU system sublayer refers generally to " Switch switch sublayer ", " Pon interface sublayer ", " bis-layers of link channel sublayer of Pon " etc. and runs on the operation layer on hardware driving, and OMCI(ONU Management and Control Interface, GPON network ONU management and control interface) be to run on these sublayers, by the final operation realizing driving in these sublayers.
In a lot of application, there is no business recovery function at present, even there is the function of business recovery, major part is also to realize by configuration file or a public configuration file of the local storage of each protocol layer, by reading configuration file, resolve, then the configuration parameter of having resolved is done to relative set, but there is very large defect in this method:
First: the business recovery being parsed by profile information, accuracy is still to be tested;
Second: for some complicated function, by the negotiation with other layers, be not just configured recovery, can cause function to realize;
The the 3rd: it is large between disparate modules, to consult difficulty, the complicated potential safety hazard of introducing of communication mechanism;
The the 4th: business recovery function is not supported to cause repeated configuration, increase ONU start-up time, take OLT system resource;
Thereby also there are a lot of areas for improvement in current business recovery mechanism, a kind of settlement mechanism of efficiently and accurately urgently.
Summary of the invention
The technical problem to be solved in the present invention be for overcome in prior art business recovery accuracy in GPON system not high, cannot consult to be just configured recoverys, communication mechanism is complicated, thereby business recovery function is not supported to cause repeated configuration increase ONU start-up time and taken OLT system resource defect with other sublayers, provide that a kind of accuracy is higher, service restoration method and system in the GPON that can not cause repeated configuration.
The present invention solves above-mentioned technical problem by following technical proposals:
A service restoration method in GPON, its feature is, and this GPON comprises ONU, OLT and passive light distribution network, and the service restoration method in this GPON comprises the following steps:
Step S 1, read the MIB(Management Information Bank in the local data base of this ONU, management information bank), and judge and the kind of MIB if this MIB is local establishment, enter step S 2; If this MIB is OLT, create, enter step S 3; If this MIB is expansion VLAN(Virtual Local Area Network, VLAN) marking operation configuration data or multicast operational attribute, enter step S 6;
Step S 2, MIB is saved to corresponding MIB global variable one by one, enter afterwards step S 7;
Step S 3, judgement reverts to and creates message format message format is still set, if create message format, enters step S 4; If message format is set, enter step S 5;
Step S 4, analyze the parameter in MIB one by one, a kind of attribute with reference to setByCreate(ME parameter, the object that is labeled as this attribute can be when OLT issues this object of establishment, do " setting " operation, ME, Management Entity, ITU-T is consultative management entity G.988) attribute reverts to establishment message format by this MIB, enters afterwards step S 7;
Step S 5, read all MIB of setting a property of only band, revert to one by one message format be set, enter afterwards step S 7;
Step S 6, according to the ME of object, take out all entry contents, calculate actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enters step S afterwards 7;
Step S 7, the logic code value of this MIB global variable is updated to this local data base.
Preferably, step S 2in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use memory copying, circulation copies in corresponding global variable one by one.
Preferably, step S 4in also comprise: travel through and allly there are the ME that create attribute, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Preferably, step S 5in also comprise: travel through the ME that all bands arrange message interface, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Preferably, step S 7in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
The present invention also provides the system of the business recovery in a kind of GPON, and its feature is, this GPON comprises ONU, OLT and passive light distribution network, and the business recovery system in this GPON also comprises:
One first judgment means, for reading the MIB of the local data base of this ONU, and judges the kind of MIB, if this MIB is local establishment, enables a local recovery device; If this MIB is OLT, create, enable one second judgment means; If this MIB, for expansion VLAN marking operation configuration data or multicast operational attribute, enables one recovery device is set;
This local recovery device, for MIB being saved to corresponding MIB global variable one by one, is enabled a updating device afterwards;
This second judgment means reverts to establishment message format for judgement message format is still set, if create message format, enables an establishment message recovery device; If message format is set, enables one message recovery device is set;
This establishment message recovery device, for analyzing the parameter of MIB one by one, reverts to establishment message format with reference to setByCreate attribute by this MIB, enables afterwards this updating device;
This arranges message recovery device for reading all MIB that only band sets a property, and reverts to one by one message format is set, and enables afterwards this updating device;
This arranges recovery device for taking out all entry contents according to the ME of object, calculates actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enable afterwards this updating device;
This updating device is for being updated to this local data base by the logic code value of this MIB global variable.
Preferably, this local recovery device is also for traveling through all ME, and according to different ME, takes out the content of all entries, calculates actual entry number of taking out, and according to entry number, uses memory copying, and circulation copies in corresponding global variable one by one.
Preferably, this establishment message recovery device also allly has the ME that create attribute for traveling through, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Preferably, this arranges message recovery device the ME of message interface is also set for traveling through all bands, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Preferably, this updating device is also for traveling through all ME, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
Positive progressive effect of the present invention is:
1, improved the defect that each layer need to be preserved configuration file, each layer is by OMCI(ONU Management and Control Interface, GPON network ONU management and control interface) allotment be to realize business recovery, guaranteed the real-time effectiveness that data are recovered, the complexity that has reduced system, has improved the stability of a system, the recovery analytical work that OMCI layer can complete independently business, avoided the complex communication between each sublayer, made ONU system more stable.
2, from database by data integrity read and simulate OLT distribution configuration command, PON sublayer, switch sublayer, without operation " database ", more simplify ONU system; The mechanism of simulation OLT transmitting order to lower levels has improved the accuracy that data are recovered, and can realize complete business recovery, avoids the omission of data.
3, design the sequencing that MIB recovers, solved cleverly a processing difficult problem of special MIB.
4, utilize the setByCreate attribute of MIB self to recover necessary field.
Accompanying drawing explanation
Fig. 1 is the flow chart of the service restoration method in the GPON of one embodiment of the invention.
Fig. 2 is the structured flowchart of the business recovery system in the GPON of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, to describe technical scheme of the present invention in detail.
With reference to figure 1, the service restoration method in GPON of the present invention, this GPON comprises ONU, OLT and passive light distribution network, the service restoration method in this GPON comprises the following steps:
Step S 1, read the MIB in the local data base of this ONU, and judge the kind of MIB, if this MIB is local establishment, enter step S 2; If this MIB is OLT, create, enter step S 3; If this MIB is " ExtendedVlanTaggingOperationConfigurationData and MulticastOperationsProfile " i.e. " expansion VLAN marking operation configuration data " or " multicast operation " attribute, enter step S 6;
Step S 2, MIB is saved to corresponding MIB global variable one by one, enter afterwards step S 7;
Step S 3, judgement reverts to and creates message format message format is still set, if create message format, enters step S 4; If message format is set, enter step S 5;
Step S 4, analyze the parameter in MIB one by one, with reference to setByCreate attribute, this MIB is reverted to establishment message format, enter afterwards step S 7;
Step S 5, read all MIB of setting a property of only band, revert to one by one message format be set, enter afterwards step S 7;
Step S 6, according to the ME of object, take out all entry contents, calculate actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enters step S afterwards 7;
Step S 7, the logic code value of this MIB global variable is updated to this local data base.
Wherein, step S 2in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use memory copying, circulation copies in corresponding global variable one by one.
Wherein, step S 4in also comprise: travel through and allly there are the ME that create attribute, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Wherein, step S 5in also comprise: travel through the ME that all bands arrange message interface, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Wherein, step S 7in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
With reference to figure 2, introduce the business recovery system in GPON of the present invention, this GPON comprises ONU, OLT and passive light distribution network, the business recovery system in this GPON also comprises:
One first judgment means 1, for reading the MIB of the local data base of this ONU, and judges the kind of MIB, if this MIB is local establishment, enables a local recovery device 2; If this MIB is OLT, create, enable one second judgment means 3; If this MIB, for expansion VLAN marking operation configuration data or multicast operational attribute, enables one recovery device 6 is set;
This local recovery device 2, for one by one MIB being saved to corresponding MIB global variable, is enabled a updating device 7 afterwards;
This second judgment means 3 reverts to establishment message format for judgement message format is still set, if create message format, enables an establishment message recovery device 4; If message format is set, enables one message recovery device 5 is set;
This establishment message recovery device 4, for analyzing one by one the parameter of MIB, reverts to establishment message format with reference to setByCreate attribute by this MIB, enables afterwards this updating device 7;
This arranges message recovery device 5 for reading all MIB that only band sets a property, and reverts to one by one message format is set, and enables afterwards this updating device 7;
This arranges recovery device 6 for taking out all entry contents according to the ME of object, calculates actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enable afterwards this updating device 7;
This updating device 7 is for being updated to this local data base by the logic code value of this MIB global variable.
Wherein, this local recovery device 2 is also for traveling through all ME, and according to different ME, takes out the content of all entries, calculates actual entry number of taking out, and according to entry number, uses memory copying, and circulation copies in corresponding global variable one by one.
Wherein, this establishment message recovery device 4 also allly has the ME that create attribute for traveling through, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Wherein, this arranges message recovery device 5 ME of message interface is also set for traveling through all bands, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
Wherein, this updating device 7 is also for traveling through all ME, and according to different ME, takes out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
Below, in conjunction with user's use angle, with an application example, again introduce technical scheme of the present invention.
Under normal circumstances when system just starts, OLT issues configuration automatically, operation to ME is divided into " establishment ", " setting ", " obtaining ", " deletion ", business recovery in the present invention relates generally to two kinds of operations, be respectively " establishment " and " setting ", our business recovery also adopts " create and recover " and " recovery is set " two kinds of recovery patterns according to this feature.According to the ME with " establishment " attribute, determine it to take " create and recover " operation operation that the employing of nothing " establishment " attribute " arranges recovery ".
First, for the local all MIB that create of ONU, directly from database, read out, and whole MIB data are saved in to corresponding MIB global variable one by one.Concrete operation method is: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use memory copying, circulation copies in corresponding global variable one by one;
Afterwards, the MIB creating for OLT, issues " establishment " order by simulation OLT and recovers.Specific practice is, after the MIB in database is read out, to analyze one by one the parameter in MIB, simultaneously with reference to setByCreate attribute, again reverts to " establishment message " form, completes the handling process that simulation OLT issues " establishment message ".In this process, only recover to have the field of setByCreate attribute, in " establishment " operation, complete " setting " operation.Concrete operation method is: travel through all ME with " establishment " attribute, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.Recovering at ITU-T, G.988 whether to have SetByCreate attribute in agreement according to mib object herein carries out, this attribute if, respective value is copied to the correspondence position in message structure, this position offset according to corresponding data the side-play amount in internal memory determine, the message that recovery obtains, then according to ITU-T G.988 agreement carry out " establishment " operation;
In addition, read the MIB of all only band " setting " attributes, revert to one by one " message is set " form, simulation OLT issues the handling process of " message is set ".The concrete operation method of SET: the ME that travels through all bands " setting " message interface, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.Different from " establishment ", recover whole attributes of MIB herein, be equally also to copy respective value to correspondence position in message structure, this position offset according to corresponding data the side-play amount in internal memory determine.The message that recovery obtains, then according to ITU-T G.988 agreement carry out the operation of " recovery is set ";
For " expansion VLAN marking operation configuration data " and the processing of " multicast operational attribute ", be such, when as above two kinds of MIB recover, need to take out all entry contents according to the ME of object, calculate actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and according to ITU-T G.988 agreement carry out " recoverys is set " and operate;
Finally, " the logic code value " of all MIB global variables is updated to " database ", abovementioned steps may change MIB, so in the end need synchronous MIB global variable in local data base.Specific practice: travel through all ME, and take out the content of all entries according to different ME, calculate actual entry number of taking out, according to entry number, use circulation, " logic code value " in the global variable of preserving is before updated in " database ".So far, business recovery function completes.
The simulation OLT transmitting order to lower levels of using in business recovery process and the Key structural blocks of processing are as follows:
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these execution modes, but these changes and modification all fall into protection scope of the present invention.

Claims (10)

1. the service restoration method in GPON, is characterized in that, this GPON comprises ONU, OLT and passive light distribution network, and the service restoration method in this GPON comprises the following steps:
Step S 1, read the MIB in the local data base of this ONU, and judge the kind of MIB, if this MIB is local establishment, enter step S 2; If this MIB is OLT, create, enter step S 3; If this MIB, for expansion VLAN marking operation configuration data or multicast operational attribute, enters step S 6;
Step S 2, MIB is saved to corresponding MIB global variable one by one, enter afterwards step S 7;
Step S 3, judgement reverts to and creates message format message format is still set, if create message format, enters step S 4; If message format is set, enter step S 5;
Step S 4, analyze the parameter in MIB one by one, with reference to setByCreate attribute, this MIB is reverted to establishment message format, enter afterwards step S 7;
Step S 5, read all MIB of setting a property of only band, revert to one by one message format be set, enter afterwards step S 7;
Step S 6, according to the ME of object, take out all entry contents, calculate actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enters step S afterwards 7;
Step S 7, the logic code value of this MIB global variable is updated to this local data base.
2. the service restoration method in GPON as claimed in claim 1, is characterized in that step S 2in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use memory copying, circulation copies in corresponding global variable one by one.
3. the service restoration method in GPON as claimed in claim 1, is characterized in that step S 4in also comprise: travel through and allly there are the ME that create attribute, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
4. the service restoration method in GPON as claimed in claim 1, is characterized in that step S 5in also comprise: travel through the ME that all bands arrange message interface, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
5. the service restoration method in the GPON as described in any one in claim 1-4, is characterized in that step S 7in also comprise: travel through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
6. the business recovery system in GPON, is characterized in that, this GPON comprises ONU, OLT and passive light distribution network, and the business recovery system in this GPON also comprises:
One first judgment means, for reading the MIB of the local data base of this ONU, and judges the kind of MIB, if this MIB is local establishment, enables a local recovery device; If this MIB is OLT, create, enable one second judgment means; If this MIB, for expansion VLAN marking operation configuration data or multicast operational attribute, enables one recovery device is set;
This local recovery device, for MIB being saved to corresponding MIB global variable one by one, is enabled a updating device afterwards;
This second judgment means reverts to establishment message format for judgement message format is still set, if create message format, enables an establishment message recovery device; If message format is set, enables one message recovery device is set;
This establishment message recovery device, for analyzing the parameter of MIB one by one, reverts to establishment message format with reference to setByCreate attribute by this MIB, enables afterwards this updating device;
This arranges message recovery device for reading all MIB that only band sets a property, and reverts to one by one message format is set, and enables afterwards this updating device;
This arranges recovery device for taking out all entry contents according to the ME of object, calculates actual entry number of taking out, according to entry number, use circulation, the corresponding global variable of having preserved before upgrading one by one, and recovery operation is set, enable afterwards this updating device;
This updating device is for being updated to this local data base by the logic code value of this MIB global variable.
7. the business recovery system in GPON as claimed in claim 6, it is characterized in that, this local recovery device is also for traveling through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use memory copying, circulation copies in corresponding global variable one by one.
8. the business recovery system in GPON as claimed in claim 6, it is characterized in that, this establishment message recovery device is also for traveling through all ME that create attribute that have, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
9. the business recovery system in GPON as claimed in claim 6, it is characterized in that, this arranges message recovery device the ME of message interface is also set for traveling through all bands, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, realize one by one the recovery from MIB to OLT form message.
10. the business recovery system in the GPON as described in any one in claim 6-9, it is characterized in that, this updating device is also for traveling through all ME, and according to different ME, take out the content of all entries, calculate actual entry number of taking out, according to entry number, use circulation, the logic code value in the global variable of preserving is before updated in this local data base.
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陈建宇 等: "一种PON系统线路保护装置的研制", 《光通信研究》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113542937A (en) * 2021-06-07 2021-10-22 烽火通信科技股份有限公司 Service recovery method, device, equipment and readable storage medium
CN113377460A (en) * 2021-07-04 2021-09-10 芯河半导体科技(无锡)有限公司 Method for processing GPON MIB by ONU
CN113377460B (en) * 2021-07-04 2024-01-19 芯河半导体科技(无锡)有限公司 Method for processing GPON MIB by ONU

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