CN101764647A - ONU (Optical Network Unit) management and control platform of GPON (Gigabit Passive Optical Network) network management system - Google Patents
ONU (Optical Network Unit) management and control platform of GPON (Gigabit Passive Optical Network) network management system Download PDFInfo
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Abstract
The invention relates to an ONU (Optical Network Unit) management and control platform of a GPON (Gigabit Passive Optical Network) network management system, which comprises an OMCI (Optical Network Termination Management and Control Interface) protocol module, an MIB (management information base) management module and an ONU alarm module, wherein the ONU alarm module comprises an alarm variety and an alarm process; the OMCI protocol module manages an OMCI channel which is defined on a GTC (Gateway Terminal Control) layer in an FPGA (Field Programmable Ggate Array) and provides a management control interface of an OLT (Optical Line Terminal) managed ONU for the GPON network element management system; an OMCI analyzing module comprises a decoding unit of a downstream OMCI frame; the OMCI framing module comprises a coding unit of an upstream OMCI frame; an ONU proxy transmits the OMCI frame through an OMCI passage; a data searching unit searches the attribute, physical data and alarm information of a managed entity from a management information library; and a data access unit extracts and stores the information in the management information library from the management information library. The invention can effectively reduce the complexity of operation and maintenance and improve the issuing efficiency of businesses.
Description
Technical field
The present invention relates to broadband access technology, especially ONU (Optical Network Unit optical network unit) management console among the GPON (Gigabit-capable Passive OpticalNetworks gigabit passive optical network).
Background technology
Along with the quickening of IT application process, and though in the modern society the life or at work, people need to obtain a large amount of information.The internet business has become people as the information propagating pathway of main flow and has obtained information and the topmost platform that exchanges.But along with the development of " voice, data and video " three-in-one Internet service, xDSL (x Digital Subscriber Line digital subscriber line) access technology can't satisfy user's demand; And along with this year the HD digital TV be the appearance of the high-bandwidth information of representative, the wideband transmit technology substitutes traditional narrow band transmission technology becomes the trend that can't stop.And in the new access network technology that emerges in large numbers, PON (Passive Optical Networks EPON) have relatively cost low, reliable, stable, professional transparent, be easy to characteristics such as maintenance and management, therefore believe to have more wide development potentiality and application prospect.
GPON has not only inherited the multicast communication technology of putting as third generation PON technology, can form the tree type neatly, star-like, the PON technical characterstic of topological structures such as bus-type, and the professional efficient of ATM (Asynchronous Transfer Mode asynchronous transfer mode) technology carrying IP (Internet Protocol procotol) that has overcome APON (ATM PassiveOptical Network ATM Passive Optical Network) is low, and there are shortcomings such as significant limitation in EPON (EhernetPassive Optical Network Ethernet passive optical network) carrier time division multiplexing service.The transmission convergence layer of GPON has natural carrying TDM (Time Division Multiplex time division multiplexing) professional ability, more pays attention to multi-service and service quality assurance; Can be simple, general, transparent transmission miscellaneous service efficiently, asymmetric property more can adapt to following FTTP/FTTH (Fiber to the home for the Fiber to the Premise/Fibreto the Home) broadband market; Transmission range is farther, coverage is wider.It is by providing the bandwidth of gigabit for the user, IP, TDM bearing mode will become solution more perfect in the FTTP/FTTH field efficiently.GPON is made up of the ONT (Optical Network Terminal Optical Network Terminal) of the OLT (Optical Line Terminal optical line terminal) of office's side, user side and ODN (OpticalDistribution Network Optical Distribution Network).It can provide 100M bandwidth to 10G, and with existing computer network seamless link, network configuration is simple, the construction operation cost is low, can support all bandwidth applications abilities of the Internet, support DL, video request program multiple business ability, this network is the most typical, the most suitable current, the most reasonable, the most cheap " integration of three networks " best approach.
The GPON technology has possessed the comprehensive advantage that high bandwidth, remote, high branching ratio and full-service insert, and can give full play to the advantage of Optical Access Network network, is the optimization technique of current Optical Access Network network.But how making each parts collaborative work of network, how to operate, maintenance and management GPON system, also is important step in the GPON system.The communication network management control system is exactly for the webmaster personnel provide information about the current network operation conditions, carries out simultaneously the network performance prediction, optimizes network function getting rid of on the basis that network failure guarantees the normal operation of communication network.Therefore, network management system is the important assurance of reliable communications, efficient, stable operation, can significantly reduce network failure, shortens or eliminate the interruption of network signal, improves the overall performance of network.Therefore has only the power that just can give full play to the GPON system by suitable network management.
At present to the research of GPON system hardware bottom part comparative maturity, and also not very perfect to the research of GPON network management system.Particularly to the top management of GPON, such as OMCI (ONT Managementand Control Interface ONU manages control interface), management by it can make the ONT that extends in the user family obtain concentrated controling management, reduces the complexity of O﹠M, and improves the efficient of service dispense.The network management control that the present invention is directed to the ONU end has provided corresponding design.
Summary of the invention
For the operation maintenance complexity height that overcomes existing GPON network management system ONU management control, the lower deficiency of efficient of service dispense, the invention provides a kind of complexity that can effectively reduce operation maintenance, improve the ONU management console of GPON network management system of the efficient of service dispense.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of ONU management console of GPON network management system, described ONU management console comprises OMCI protocol module, MIB (Management Information Base management information bank) administration module and ONU alarm module, described OMCI protocol module comprises and meets ITU-T G.984.4 the OMCI parsing module and the OMCI framing module of class standard, described MIB administration module comprises data searching unit and data access unit, and described ONU alarm module comprises alarm kind and alarm process; Wherein,
In the described OMCI protocol module, management is defined in the OMCI channel on the GTC layer (G-PON Transmission Convergence GPON transmission convergence layer) among the FPGA (Field-Programmable Gate Array field programmable gate array), be the management control interface that the GPON Element management system provides OLT to manage ONU, realization OMCI passage is communicated by letter with the OMCI coding/decoding module; Described OMCI parsing module comprises the decoding unit of the OMCI frame in the downstream; Described OMCI framing module comprises the coding unit of the OMCI frame in the upstream; The ONU agency is by communicating by letter at realization of OMCI channel transfer OMCI frame and OLT;
Described data searching unit is searched for attribute, physical data and the warning information of managed entity in management information bank MIB; Described data access unit in management information bank, extract and the storage management information bank in information; OLT carries out the extraction of information and stores the management that realizes ONU the MIB storehouse by the OMCI frame.
As preferred a kind of scheme: described ONU alarm module comprises alarm kind and alarm process; Described alarm kind comprises DACT (Deactivate ONU-ID removes ONU-ID), DIS (Disabled ONU removes to enable ONU-ID), MIS (Link Mismatching link does not match), LOF (Loss of Frame dropout), SD (Signal Degraded downstream signal deterioration), SF (inefficacy of Signal Failed downstream signal), LOS (Loss of Signal dropout), PEE (Physical Equipment Error physical equipment is made mistakes), TF (inefficacy of Transmitter Failure ONU transmitter), LCDA (Loss of ATM channel delineationATM passage is delimited and lost), LCDG (Loss of GEM channel delineation GEM passage is delimited and lost), SUF (Start-up Failure starts failure), MEM (Message Error Message ONU receives unknown message) and RDI 14 alarms such as (indications of Remote Defect Indication in ONU remote bug) are classified to it in conjunction with the design of ONU terminal control panel at the flow process of 14 alarms; Described alarm process comprises above 14 alarm processes of ONU end;
As preferred a kind of scheme: described MIB administration module adopts embedded database to realize, described OMCI protocol module is transmitted in communicating by letter of realization of OMCI passage and OLT by the OMCI frame of 54 bytes, and described ONU alarm module reports OLT to realize by filling in OMCI frame byte.
As preferred another kind of scheme: the OMCI of described OMCI protocol module comprises Get, Set, reboot, test and 5 kinds of message formats of synchronize time, by these 5 kinds of type of messages, realizes the whole network management between ONU and the OLT.
As preferred another scheme: OLT by resolving these 5 kinds of OMCI frame formats and realize and finishing the function of ONU alarm module to the management of MIB.
Technical conceive of the present invention is: the present invention adopts embedded system based on the ARM9 chip as ONU management control module hardware development platform; Utilize embedded database software SQL ite exploitation MIB storehouse, and realize maintenance and management operation the MIB storehouse; On this platform, realize the encoding and decoding of OMCI frame,, realize the transmission of OMCI frame finally realizing the network management of OLT ONU by serial communication in conjunction with alarm management with to the operation in MIB storehouse.
Characteristics of the present invention mainly show: 1, can effectively reduce the complexity of operation maintenance, the efficient of raising service dispense; 2, have the OMCI transmission channel, by meet ITU-T G.984.4 the OMCI frame of standard realize communication between OLT and the ONU; 3, have an embedded database MIB, deposited the parameter that is used for configuration management, performance management, safety management and fault management; 4, have alarm management module, realize the alarm function of network management system on to the basis of Alarm Classification; 5, OMCI is in encoding-decoding process, realizes to the visit of MIB storehouse with to the collection of warning information.
Description of drawings
Fig. 1 is an ONU management control function module block diagram of the present invention.
Fig. 2 is the coding flow chart of OMCI frame of the present invention.
Fig. 3 is the decoding process figure of OMCI frame of the present invention.
Fig. 4 is an OMCI get frame process chart of the present invention.
Fig. 5 is an OMCI set frame handling process of the present invention.
Fig. 6 is three kinds of alarm situation flow charts of the present invention.
Fig. 7 is that MIB database data of the present invention extracts flow chart.
Fig. 8 is MIB database data Stored Procedure figure of the present invention.
Fig. 9 is the parsing and the reorganization scheme of OMCI frame of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 9, a kind of ONU management console of GPON network management system, described ONU management console comprises OMCI protocol module, MIB administration module and ONU alarm module, described OMCI protocol module comprises and meets ITU-T G.984.4 the OMCI parsing module and the OMCI framing module of class standard, described MIB administration module comprises data searching unit and data access unit, and described ONU alarm module comprises alarm kind and alarm process; Wherein,
In the described OMCI protocol module, management is defined in the OMCI channel on the GTC layer among the FPGA, is the management control interface that the GPON Element management system provides OLT to manage ONU, and realization OMCI passage is communicated by letter with the OMCI coding/decoding module; Described OMCI parsing module comprises the decoding unit of the OMCI frame in the downstream; Described OMCI framing module comprises the coding unit of the OMCI frame in the upstream; The ONU agency is by communicating by letter at realization of OMCI channel transfer OMCI frame and OLT;
Described data searching unit is searched for attribute, physical data and the warning information of managed entity in management information bank MIB; Described data access unit in management information bank, extract and the storage management information bank in information; OLT carries out the extraction of information and stores the management that realizes ONU the MIB storehouse by the OMCI frame.
Described ONU alarm module comprises alarm kind and alarm process; Described alarm kind comprises that DACT (Deactivate ONU-ID) removes ONU-ID, DIS (Disabled ONU) removes to enable ONU-ID, MIS (Link Mismatching) link does not match, LOF (Loss of Frame) dropout, SD (SignalDegraded) downstream signal deterioration, SF (Signal Failed) downstream signal lost efficacy, LOS (Loss of Signal) dropout, PEE (Physical Equipment Error) physical equipment is made mistakes, TF (TransmitterFailure) ONU transmitter lost efficacy, LCDA (Loss of ATM channel delineation) ATM passage is delimited and is lost, LCDG (Loss of GEM channel delineation) GEM passage is delimited and is lost, SUF (Start-upFailure) starts failure, MEM (Message Error Message) ONU receives 14 alarms such as unknown message and RDI (RemoteDefect Indication in ONU) remote bug indication, it is classified in conjunction with the design of ONU terminal control panel at the flow process of 14 alarms; Described alarm process comprises above 14 alarm processes of ONU end;
Described MIB administration module adopts embedded database to realize, described OMCI protocol module is transmitted in communicating by letter of realization of OMCI passage and OLT by the OMCI frame of 54 bytes, and described ONU alarm module reports OLT to realize by filling in OMCI frame byte.
The OMCI of described OMCI protocol module comprises Get, Set, reboot, test and synchronize time5 kind message format, by these 5 kinds of type of messages, realizes the whole network management between ONU and the OLT.OLT is by resolving these 5 kinds of OMCI frame formats and realize the management of MIB and finishing the function of ONU alarm module.
Fig. 1 is an ONU management control function module block diagram of the present invention, is specifically described below in conjunction with this figure, as shown in the figure:
ONU management controlled function comprises four modules:
(1) the basic management of ONU control comprises user interface interfaces such as () audio frequency management control, the acquisition module interface, and physical layer hardware control is with the management control of GTC layer information exchange;
(2) the top management control that realizes by OMCI, the supervisory communications of realization OLT and ONU;
(3) Ethernet interface of local network management;
(4) panel control realizes that the ONU running status shows and manual operation to ONU;
(5) acquisition module is as the foundation of local management control, also as the foundation that reports OLT end or Network Management Station managing control information.GTC framing sublayer function comprises: (1) realizes the multiplex/demultiplex of PLOAM (Physical Layer Operations, Administration and Maintenance physical layer operations management maintenance), ATM and GEM stream and TC transmission frame; (2) generation/decoding of TC transmission frame frame head; (3) based on the inner exchanging function of Alloc ID (AllocationIdentifier distribution marker).
Fig. 2 is the coding flow chart of OMCI frame of the present invention, is that example specifically describes below in conjunction with this figure and with get, set, and as shown in the figure, the inventive method comprises the steps:
Step 201, structure fixed length 53 byte OMCI frames;
The frame head of 5 bytes under step 202, interpolation ATM or GEM (the G-PON Encapsulation Method GPON packaged type) pattern, thereby the address of location ONT;
Step 203, OLT are filled in the affairs relevant identifier so that the ONU end is mapped solicited message and response message according to the priority of the order of judgement;
Step 204, OLT are that the solicited message or the type of response message and information are filled in the type of message byte according to this frame information, particularly the 7th AR (Acknowledge Request acknowledges requests), the 6th AK (Acknowledgement affirmation) and 1 to 5 MT (Message Type type of message): information type;
Step 205, device identifier, fixed field 0x0A;
Step 206, OLT determine the example of managed entity and managed entity, the fill message identifier;
Step 207, according to the purpose of OMCI frame, fill in the details in the information content territory of 32 bytes, its information format with OMCI is corresponding, this field is the important component part of OMCI frame, the concrete information content is all in this field, and the content that the present invention specifically is divided into get, set frame is filled in and described;
Step 208,8 bytes of interpolation are used for the OMCI check digit that the GTC layer is handled, and the present invention is as follows to its usage: the one, if be set to 0x0000, just ignore this field at receiving terminal in preceding two bytes of transmitting terminal; The 2nd, at the detailed 32-bit CRC (Cyclical Redundancy Check CRC) that introduces of ITU-T Rec.I.363.5..
For example get operates the coding of frame: get information is the managed entity attribute specification that OLT sends to ONT, and information is that ONT sends to OLT with the managed entity property value that OLT needs.
The 6-7 byte: the things relevant identifier is decided by OLT, and two byte correspondences of this of 6-7 byte in the response message get response and get are identical.Because ONT-G has 5 motion action, be 00,000,000 00000001 so suppose get here;
The 8th byte: the first five information type is get, MT=9 (01001);
Get is a solicited message, so AK=' 0 ';
Get needs ONT to send confirmation get response, so AR=' 1 ';
The DB position is left the purpose bit, is always ' 0 ';
So the 8th byte is 01001001;
The 9th byte: according to agreement G.984.3, this Field Definition is 0x0A (00001010);
The 10-11 byte: ONT-G managed entity value is 256 (0000000100000000);
The 12-13 byte: it is 0x0000 (0000000000000000) that ONT-G managed entity example has only a value;
The 14-15 byte: fill the ONT-G attribute mask, this paper supposition needs last three property values of ONT-G, so value is (0000000000000111);
The 16-45 byte: be used in get response information content coding, each byte all is (0000000000000000) in get;
For example set operation frame is encoded:
Set information is that OLT is provided with requirement to the managed entity attribute that ONT sends, and attribute of ONT transmission is provided with situation and feeds back to OLT.
6-7 byte: be set to 00,000,000 00000010;
The 8th byte: the first five information type is set, MT=8 (01000);
Other three and get have as a same reason, so obtain: AK=' 0 '; AR=' 1 '; DB=' 0 ';
So the 8th byte is 01001000;
The 9th byte: according to agreement G.984.3, this Field Definition is 0x0A (00001010);
10-13 byte: the same with get;
The 14-15 byte: fill the ONT-G attribute mask, the same supposition of set will be provided with last three property values of ONT-G, so value is (0000000000000111);
16-45 byte: fill the property value that OLT will be provided with.Need be provided with severally, just fill in order.This paper fills in three 3 bytes altogether, so fill in the property value that will be provided with in the 16-18 byte, remaining 19-45 byte is filled in 0x00;
Fig. 3 is the decoding process figure of OMCI frame of the present invention, describes below in conjunction with this figure, and as shown in the figure, the coding/decoding method of OMCI frame of the present invention comprises the steps:
Step 301, because the OMCI frame is fixed length 53 bytes, so, the frame of need decodings is carried out length judges, if not 53 byte lengths, then abandon frame, if 53 bytes are then done next step decoding work;
Step 302, the OMCI frame is decomposed into 7 fields, analyzes respectively, seven fields are respectively file header, things relevant identifier, information type, device identifier, information Recognition number, information content territory, OMCI verification;
Step 303, because device identifier regulation is 0X0A, so need judge,, then abandon, if then can carry out next step decoding if this byte is not 0X0A to it; Simultaneously, check,, then carry out next step decoding,, then abandon frame and finish decoding if incorrect if correct to the OMCI verification; Step 304, header, things relevant identifier decoding value is preserved, and determine that by information type which kind of type is the information of this OMCI frame be, and, decoded in information content territory according to management entity given in the message identification number, take out the value of management entity, and with storage;
Step 305, decoding finish, and various error situation can occur in the process of OMCI frame decoding, have clearly provided the processing mode under the different situations in ONT management control interface agreement
Fig. 4 is an OMCI get frame process chart of the present invention, describes below in conjunction with this figure, and as shown in the figure, the processing method of OMCI get frame of the present invention comprises the steps:
Step 401, after reading of data is stored in the buffering area from serial ports, with the deposit data in the buffering area in the get1 frame, judging whether to confirm successfully that for confirming solicited message then the type of get2 is set to response frame, is the command process failure if affirmation is failed;
Step 402, judge that whether the 8th byte of OMCI frame be the get action, if confirm as the get frame then continue to separate the frame flow process, if the acknowledge message type error is then carried out judgment processing situation subprogram;
Step 403, read the 9th byte device identifier of OMCI frame, judge whether its content is fixed value 0X0A, confirm successfully then to continue to carry out to separate the frame step, as not being to specify byte, then execution parameter mistake subprogram; Step 404, read the message identifier of the 10th to 13 byte in the OMCI frame, carry out corresponding information get operation,, then carry out managed entity example mistake subprogram if can't the identification message identifier in the middle of these 4 bytes at the managed entity that is obtained;
Fig. 5 is a set frame handling process of the present invention, the Set handling function allows OLT by OMCI the ONT managed device to be carried out the simple configuration operation, promptly by changing the value of certain OMCI variable, come the configuration parameter in the change equipment, describe below in conjunction with this figure, as shown in the figure, the processing method of OMCI set frame of the present invention comprises the steps:
Step 501, after reading of data is stored in the buffering area from serial ports, with the deposit data in the buffering area in the set1 frame, judging whether to confirm successfully that for confirming solicited message then the type of set2 is set to response frame, is the command process failure if affirmation is failed;
Step 502, judge that whether the 8th byte of OMCI frame be the set action, if confirm as the set frame then continue the framing flow process, if the acknowledge message type error is then carried out judgment processing situation subprogram;
Step 503, read the 9th byte device identifier of OMCI frame, judge whether its content is fixed value 0X0A, confirm successfully then to continue to carry out the framing step, as not being to specify byte, then execution parameter mistake subprogram; Step 504, read the message identifier of the 10th to 13 byte in the OMCI frame, carry out corresponding information set operation,, then carry out managed entity example mistake subprogram if can't the identification message identifier in the middle of these 4 bytes at the managed entity that is obtained.
Fig. 6 is three kinds of alarm situation flow charts of the present invention, the ONU end mainly contains DACT (DeactivateONU-ID) and removes ONU-ID, DIS (Disabled ONU) removes to enable ONU-ID, MIS (LinkMismatching) link does not match, LOF (Loss of Frame) dropout, SD (Signal Degraded) downstream signal deterioration, SF (Signal Failed) downstream signal lost efficacy, LOS (Loss of Signal) dropout, PEE (Physical Equipment Error) physical equipment is made mistakes, TF (Transmitter Failure) ONU transmitter lost efficacy, LCDA (Loss of ATM channel delineation) ATM passage is delimited and is lost, LCDG (Loss of GEM channel delineation) GEM passage is delimited and is lost, SUF (Start-up Failure) starts failure, MEM (Message Error Message) ONU receives unknown message and 14 kinds of alarms of RDI (Remote DefectIndication in ONU) remote bug indication, the present invention is according to the characteristics of its alarm process, it is divided into three big situations, describe below in conjunction with this figure, as shown in the figure, the flow process of the various situation alarms of the present invention comprises:
Situation one: ONU receives the downlink frame from OLT, after resolving the PLOAM frame, obtain after the information of specified byte, be shown as since OLT be connected with ONU make mistakes, erroneous frame that OLT receives ONU and OLT specify certain ONU to enter under the situation such as alert phrase alarm status to occur.This moment, ONU upgraded the MIB database data of the correspondence of self, and filled up PLOAM frame according to this situation, fed back to OLT, waited for the operation indication of OLT.
Situation two: when occurring detected self physical data of mistake and data acquisition module in the Frame process that ONU sends and surpass preset threshold value, all can trigger the alarm process of ONU.This moment, ONU at first upgraded the MIB database data of self correspondence, and filled that specific byte reports OLT in the up PLOAM frame, waited for operation mandate and the indication of OLT.
Situation three: in above two kinds of alarms that ONU occurs, wherein a part can't solve owing to belong to rigid mistake link, therefore need not to wait for from the operation mandate of OLT, ask artificial alarming processing.This moment, ONU showed the alarm prompt lamp of self, and gave Network Management Station with this alarm report, waited for artificial treatment.
Fig. 7 is that MIB database data of the present invention extracts flow chart, and SQLite provides the most of supports to SQL92 as the embedded database of C language; Describe below in conjunction with this figure, as shown in the figure, the data extraction method in MIB storehouse that the present invention is based on the exploitation of embedded database comprises the steps:
The database .DB file of step 701, the definition of connection embedded database carries out database manipulation in order to ONU to it;
Step 702, according to the OMCI frame of being received, read its 8th byte, the judgement type of message is get;
Step 703, after determining that this message format is get action, extract the 10th to 15 byte of OMCI frame continuously, these 6 bytes have comprised the example of affiliated managed entity, managed entity and the mask of required attribute, serve as according to carrying out the extraction of data with these three parameters;
The example of step 704, the managed entity that is extracted and managed entity is the object that is used for determining to extract attribute data, attribute mask then is final which property value of determining to need to extract altogether in 8 attributes, after having determined these parameters, just can call select data extraction program of the present invention;
Step 705, select program are called SQL (Structured Query Language SQL) statement and are inserted corresponding byte in order to ONU through retrieving to find corresponding data and deposit it in buffer area in reorganization Get response frame according to above these three parameters;
Fig. 8 is MIB database data Stored Procedure figure of the present invention, describes below in conjunction with this figure, and as shown in the figure, the date storage method in MIB storehouse that the present invention is based on the exploitation of embedded database comprises the steps:
The database D B file of step 801, the definition of connection embedded database carries out database manipulation in order to ONU to it;
Step 802, according to the OMCI frame of being received, read its 8th byte, the judgement type of message is set
Step 803, after determining that this message format is set action, extract the 10th to 15 byte of OMCI frame continuously, these 6 bytes comprised in the example of affiliated managed entity, managed entity and the frame with the mask of attribute, serve as according to carrying out the storage of data with these three parameters;
Step 804, resolve the 16th to 32 byte in the OMCI frame simultaneously, in these bytes, may comprise decide attribute mask property value be used for depositing in of data;
The example of step 805, the managed entity that is extracted and managed entity is the object that is used for determining to extract attribute data, attribute mask then is which property value in final 8 attributes altogether of determining to deposit in, after having determined these parameters, just can call set data of the present invention and deposit program in;
Step 806, set program are called SQL statement and are found corresponding managed entity and attribute item thereof through retrieval according to above these three parameters, and property value is write the MIB database.
Fig. 9 is the parsing and the reorganization scheme of OMCI frame of the present invention, describes below in conjunction with this figure, and as shown in the figure, the parsing and the reorganization scheme of OMCI frame of the present invention are as follows:
According to the encoding and decoding flow process of above OMCI frame, whole process of analysis is divided into four modules, comprises error module, verification module, discrimination module and execution and recombination module.
Described error module mainly satisfies frame type of action mistake, the parameter type mistake, and the managed entity mistake, device busy, a series of promptings such as attribute failure or the unknown provide the OMCI that meets analysis condition frame;
Described verification module mainly is that 8 CRC sign indicating numbers are carried out verification;
Described discrimination module mainly is to carry out distinguishing of frame type of action and type of message, by setting specific data base querying table, check various type of messages according to the data in the table, various different pieces of information requirements for access or managed entity are made corresponding feedback action so that finish;
Described execution and recombination module are the responses to the frame analysis result, to finish command execution and recombination function, after finishing the parsing of reading OMCI frames such as change operation that comprises the MIB storehouse, required interface command is write corresponding document, corresponding interruption is provided then, waits for read operation; Then make up the frame of fixed length 48 bytes, and finish the reorganization of frame.
Claims (5)
1. the ONU management console of a GPON network management system, it is characterized in that: described ONU management console comprises OMCI protocol module, MIB administration module and ONU alarm module, described OMCI protocol module comprises and meets ITU-T G.984.4 the OMCI parsing module and the OMCI framing module of class standard, described MIB administration module comprises data searching unit and data access unit, and described ONU alarm module comprises alarm kind and alarm process; Wherein,
In the described OMCI protocol module, management is defined in the OMCI channel on the GTC layer among the FPGA, is the management control interface that the GPON Element management system provides OLT to manage ONU, and realization OMCI passage is communicated by letter with the OMCI coding/decoding module; Described OMCI parsing module comprises the decoding unit of the OMCI frame in the downstream; Described OMCI framing module comprises the coding unit of the OMCI frame in the upstream; The ONU agency is by communicating by letter at realization of OMCI channel transfer OMCI frame and OLT;
Described data searching unit is searched for attribute, physical data and the warning information of managed entity in management information bank MIB; Described data access unit in management information bank, extract and the storage management information bank in information; OLT carries out the extraction of information and stores the management that realizes ONU the MIB storehouse by the OMCI frame.
2. the ONU management console of GPON network management system as claimed in claim 1, it is characterized in that: described alarm kind comprises that DACT removes ONU-ID, DIS removes to enable ONU-ID, the MIS link does not match, the LOF dropout, SD downstream signal deterioration, the SF downstream signal lost efficacy, the LOS dropout, the PEE physical equipment is made mistakes, the TFONU transmitter lost efficacy, the LCDAATM passage is delimited and is lost, the LCDGGEM passage is delimited and is lost, SUF starts failure and MEMNU receives unknown message and RDI remote bug indication alarm, it is classified in conjunction with the design of ONU terminal control panel at the flow process of described 14 alarms; Described alarm process comprises above 14 alarm processes of ONU end.
3. the ONU management console of GPON network management system as claimed in claim 1 or 2, it is characterized in that: in the described MIB administration module, adopt embedded database to realize, described OMCI protocol module is transmitted in communicating by letter of realization of OMCI passage and OLT by the OMCI frame of 54 bytes, and described ONU alarm module reports OLT to realize by filling in OMCI frame byte.
4. the ONU management console of GPON network management system as claimed in claim 1 or 2, it is characterized in that: the OMCI of described OMCI protocol module comprises Get, Set, reboot, test and 5 kinds of message formats of synchronize time, by these 5 kinds of type of messages, realize the whole network management between ONU and the OLT.
5. the ONU management console of GPON network management system as claimed in claim 4 is characterized in that: OLT is by resolving these 5 kinds of OMCI frame formats and realize the management of MIB and finishing the alarm of ONU alarm module.
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