CN102064955B - Method and system for remotely upgrading optical network unit - Google Patents
Method and system for remotely upgrading optical network unit Download PDFInfo
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- CN102064955B CN102064955B CN200910238183.XA CN200910238183A CN102064955B CN 102064955 B CN102064955 B CN 102064955B CN 200910238183 A CN200910238183 A CN 200910238183A CN 102064955 B CN102064955 B CN 102064955B
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Abstract
The invention discloses a method for remotely upgrading an optical network unit. An operation management and maintenance protocol data unit is expanded and serves as a carrier for upgrading an interactive message between an optical network unit (ONU) and an optical line terminal (OLT). The method comprises the following steps that: the OLT sends an upgrade request message to the ONU, judges whether the ONU allows upgrade according to a received upgrade response message, and encapsulates an upgrade file in an upgrade message and transmits the upgrade file to the ONU if the upgrade is allowed; after the file is completely transmitted, the OLT sends a transmission completion notification message to the ONU; after receiving the upgrade file transmission completion notification message sent by the OLT, the ONU writes the upgrade file in a spare storage area or the current storage area; and the OLT starts from the storage area, and sets the storage area as a primary storage area if the OLT is successfully started, namely the OLT always starts from the storage area from now on. The invention discloses a system for remotely upgrading the optical network unit. The technical scheme is easy to realize and practical.
Description
Technical field
The present invention relates to optical network unit (ONU, the technology of remote upgrade Optical Network Unit), relate in particular to the method and system of the optical network unit remote upgrade in a kind of Ethernet passive optical network (EPON, Ethernet Passive Optical Network).
Background technology
Fig. 1 is all-fiber protection structural representation in the EPON system; as shown in Figure 1; EPON (PON; Passive Optical Network) technology is a kind of point-to-multipoint optical fiber access technology; it is by the optical line terminal (OLT of office's side; Optical Line Terminal), the ONU of user's side and Optical Distribution Network (ODN, Optical Distribution Network) form.ODN is point-to-multipoint structure, and an OLT connects a plurality of ONU by ODN.
The PON technology can be subdivided into multiple: ATM Passive Optical Network (APON, ATM Passive OpticalNetwork) with asynchronous transfer mode (ATM, Asynchronous Transfer Mode) as data link layer; EPON is used Ethernet as data link layer, and the expansion Ethernet makes it to have point-to-multipoint communication capacity; Gigabit passive optical network (GPON, Gigabit-Capable Passive Optical Network) adopts ATM/GEM (GPON Encapsulation Method) as link layer, can provide support to multiple business.Wherein, in the short run domestic, EPON will dominate Chinese PON market.China Telecom is through early stage and equipment vendor, and chip business after the work such as a series of fruitful intercommunications, test, has proposed Ethernet PON specification together in 2007, be adopted as at present national standard.
At present, EPON is at home in scale commercial stage.End in by the end of June, 09, the PON user of China Telecom has risen to more than 270 ten thousand, accounts for the overall PON user's of China 80%.Simultaneously, new CHINAUNICOM issues the EPON bid June, supports the most at last 1100 general-purpose families.Estimate, current bid will attract at least 250 ten thousand EPON users for CHINAUNICOM in 2009.The commercial scale of EPON is still maintaining sustained and rapid growth.
EPON is in the existing network large-scale application, and operator can propose various new demands to equipment according to actual operation situation.In order to meet new demand, equipment vendor is bound to need to be by meeting corresponding demand to device upgrade.And the characteristics that EPON arranges net are: local side is placed on the Special machine room of office side's machine room or community, and Optical Network Terminal is placed on user family or corridor, distributes and disperses very much.Simultaneously, also there is following diversity in the ONU hung under OLT: may be from different equipment vendors (in emerging, Huawei, flames of war etc.), may belong to different ONU models (as SFU, MDU, SBU, HGU etc.), also may belong to same model but actual motion version difference etc.
When upgrade requirement is arranged, if go to separately user's side, to be upgraded, workload can be very huge, and maintenance cost will be quite high, not possess operability, and office side also can't accept this kind of upgrading mode.At present, the upgrading mode that office can accept is directly at machine room, can complete the remote upgrade to ONU.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of optical network unit remote upgrade, can select clean culture or multicast mode to be upgraded to optical network unit to be upgraded for the quantity of optical network unit to be upgraded, thereby realize the remote upgrade to optical network unit.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of optical network unit remote upgrade, the Operation, Administration and Maintenance protocol Data Unit is expanded, supporting body as the mutual message of upgrading between optical network unit and optical line terminal, wherein, the mutual message of described upgrading comprises that upgrade request and response message thereof, upgrade file transmit that request and response message thereof, upgrade file have transmitted notice and response message, upgrade file activation request and response message thereof, upgrade file comes into force and asks and response message, and described method also comprises:
Described optical line terminal sends described upgrade request message to described optical network unit, and determine after the described upgrading response message that receives described optical network unit transmission whether described optical network unit allows upgrading, judge during permission whether upgrade file can be transmitted request message by a upgrade file and carry, if could directly described upgrade file would be sent to described optical network unit, otherwise, described upgrade file is cut apart, and the described upgrade file after cutting apart is sent to respectively to described optical network unit;
After described optical network unit receives upgrade file that described optical line terminal sends and transmitted and notify message, described upgrade file is write to spare memory area or current memory block, and the memory block that will write described upgrade file is as primary memory block.
Preferably, described described upgrade file is cut apart, being comprised: the maximum load-carrying capacity that transmits request message by described upgrade file is the described upgrade file of unit.
Preferably, after described optical network unit writes spare memory area by described upgrade file, after the described upgrade file that receives described optical line terminal transmission comes into force request message, will write the spare memory area of described upgrade file as primary memory block.
Preferably, described method also comprises:
Optical network unit quantity to be upgraded under described optical line terminal lower than or during not higher than setting threshold, described optical line terminal adopts mode of unicast to be upgraded to described optical network unit to be upgraded, otherwise described optical line terminal adopts broadcast mode to be upgraded to described optical network unit to be upgraded.
Preferably, described method also comprises:
Described optical line terminal sends described upgrade request message, described upgrade file to described optical network unit and transmits request message, described upgrade file and has transmitted and notify message, described upgrade file activation request message or described upgrade file to come into force after request message, while in setting duration, not receiving corresponding response message, will retransmit corresponding request message.
A kind of system of optical network unit remote upgrade comprises:
Expanding element, for the Operation, Administration and Maintenance protocol Data Unit is expanded, supporting body as the mutual message of upgrading between optical network unit and optical line terminal, wherein, the mutual message of described upgrading comprises that upgrade request and response message thereof, upgrade file transmit that request and response message thereof, upgrade file have transmitted notice and response message, upgrade file activation request and response message thereof, upgrade file comes into force and asks and response message;
Transmitting element, be arranged in described optical line terminal, for send described upgrade request message to described optical network unit;
The first receiving element, be arranged in described optical line terminal, the described upgrading response message sent for receiving described optical network unit;
Determining unit, be arranged in described optical line terminal, for determining whether described optical network unit allows upgrading, determine during permission whether upgrade file can be transmitted request message by a upgrade file and carry, can the time trigger described transmitting element and directly described upgrade file sent to described optical network unit, can not the time trigger cutting unit;
Cutting unit, for described upgrade file is cut apart, described transmitting element sends to respectively described optical network unit by the described upgrade file after cutting apart;
The second receiving element, be arranged in described optical network unit, for the upgrade file that receives described optical line terminal transmission, transmitted the notice message;
Write and enable unit, has transmitted after notifying message described upgrade file is write to spare memory area or current memory block for receive described upgrade file at described the second receiving element, and the memory block that will write described upgrade file is as primary memory block.
Preferably, the maximum load-carrying capacity that described cutting unit transmits request message by described upgrade file is the described upgrade file of unit.
Preferably, said write and enable unit described upgrade file write to spare memory area after, receive at described the second receiving element described upgrade file that described optical line terminal sends and come into force after request message, will write the spare memory area of described upgrade file as primary memory block.
Preferably, optical network unit quantity to be upgraded under described optical line terminal lower than or during not higher than setting threshold, described transmitting element adopts mode of unicast to be upgraded to described optical network unit to be upgraded, otherwise described transmitting element adopts broadcast mode to be upgraded to described optical network unit to be upgraded.
Preferably, described transmitting element sends described upgrade request message, described upgrade file to described optical network unit and transmits request message, described upgrade file and has transmitted and notify message, described upgrade file activation request message or described upgrade file to come into force after request message, while in setting duration, not receiving corresponding response message, described transmitting element will be retransmitted corresponding request message.
The present invention, when ONU is carried out to remote upgrade, adopts different upgrading modes according to the quantity of ONU to be upgraded, when the negligible amounts of ONU to be upgraded, adopts mode of unicast to be upgraded, and the quantity of ONU to be upgraded adopts broadcast mode to be upgraded when more.The present invention can complete the remote upgrade to ONU in the OLT side, and upgrade maintenance is convenient; In addition, upgrading message to the ONU upgrading does not transmit by service channel, directly be encapsulated in expansion Operation, Administration and Maintenance (OAM, Operation Administration andMaintenance) protocol frame, thereby can not cause and take user's service bandwidth; The present invention not only can realize the independent remote upgrade to the specific user; Also can formulate flexible strategy and realize the specific ONU model of specific user manufacturer is carried out to batch upgrade, meet well requirement of engineering.
The accompanying drawing explanation
Fig. 1 is all-fiber protection structural representation in the EPON system;
Fig. 2 is the structural representation of the OAM Protocol Data Unit after expanding;
The flow chart of in the method that Fig. 3 is optical network unit remote upgrade of the present invention, single ONU being upgraded;
The flow chart of in the method that Fig. 4 is optical network unit remote upgrade of the present invention, a plurality of ONU being upgraded;
The composition structural representation of the system that Fig. 5 is optical network unit remote upgrade of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Upgrading message of the present invention is by OAM Protocol Data Unit (OAM Protocol Data Unit) carrying, and OLT is without being lower extension ONU configuring service channel.If the upgrading message transmits by service channel, will take user bandwidth, also can take in addition VLAN (VLAN, Virtual Local AreaNetwork) resource.And the upgrading message can not affect the service channel between OLT and ONU while carrying by OAM Protocol Data Unit.
In the present invention, need to be expanded the OAM message, the OAM message of concrete expansion need meet the regulation of expanding about OAM in IEEE802.3-2005Clause57.4.3.6.Fig. 2 is the structural representation of the OAM Protocol Data Unit after expanding, as shown in Figure 2, Organization Specific OAMPDU comprises the unique indications (OUI of organizing of three bytes, Organizationally Unique Identifier) field, after OUI, be the command code (Ext.Opcode) of the expansion of 1 byte, for meaning the action type of expansion.After Ext.Opcode, be concrete operation indication, to the content specific definition after this and the mutual definition of association message, thereby the various operations that reached upgrading are emphasis of the present invention.As shown in Figure 2, wherein,
Destination address (DA, Destination Address): the DA in OAMPDU is the Slow_Protocols_Multicast address, uses and the regulation of encoding is shown in IEEE 802.3-2005Annex 43B;
Source address (SA, Source Address): the SA in OAMPDU is MAC Address independently, and this address is associated with the port that sends OAMPDU;
Length/Type:OAMPDU employing Type coding, and carrying Slow_Protocols_Type thresholding (0x8809), used and the regulation of encoding is shown in IEEE 802.3-2005Annex 43B;
The specific Slow Protocol of Subtype:Subtype domain identifier encapsulation, OAMPDU Subtype thresholding is 0x03;
The Flag:Flag territory is the state indication bit;
Data/PAD: the payload of this field for carrying OAMPDU comprises the encoding domains such as OUI, extended operation code (Ext.Opcode), load (payload) and region filling (Padding).When not using these bytes, be filled to 0 when sending, and ignore when receiving;
Frame Check Sequence (FCS, Frame Check Sequence): generally produced by the MAC of lower floor.
When ONU negligible amounts to be upgraded, as (this number of thresholds is rule of thumb arranged voluntarily by the user to be 10, also can be set to 5 etc.) when following, can to ONU, upgrade separately one by one by mode of unicast, the descending upgrading message of OLT is by the unicast link sign (LLID of specific ONU, Logic LinkIdentifier) identify and be sent to above-mentioned specific ONU, and when ONU quantity to be upgraded surpasses setting threshold (as being greater than 10), while adopting the mode of batch upgrade, the OLT downlink message sends to the ONU under OLT by broadcast LLID, LLID is set to " 0x7FFF ", no matter be to upgrade one by one or batch upgrade, the mode of unicast that the response message of ONU all passes through reports.Below describe concrete upgrading message in the present invention in detail.
Upgrade request message (image_updata_request) comprises following information: the version situation of vendor id, the corresponding model of this ONU, version to be upgraded, escalation policy etc. under the LLID of upgrading object (ONU), version to be upgraded.
Upgrading response message (image_update_response), for the response to the upgrade request message.If ONU meets promotion condition, reply this frame.The model that the image_update_response message comprises manufacturer under LLID, the ONU that following information: ONU is assigned with, ONU, ONU current version information etc.
Upgrade file transmits message (image_transport_request), for the upgrade file by be upgraded, is divided into multistage, is encapsulated in successively in this frame, sends to ONU.The LLID that the image_transport_request message comprises following information: ONU, the packaged release content length of this frame, the sequence number of this frame etc.Certainly, if upgrade file is enough little, when an image_transport_request can carry, needn't to upgrade file, be cut apart again.When upgrade file is cut apart, the maximum payload that can carry by image_transport_request is that unit is cut apart, so that the large as far as possible data volume of each image_transport_request carrying.
Upgrade file transmits response message (image_transport_response), and for responding image_transport_request, with notice, OLT has received image_transport_request.The image_transport_response message comprises following information: the LLID of response results (success or failure), response frame sequence number, ONU etc.
Upgrade file has been downloaded notice message (image_transport_end_notice), the LLID of inclusion information: ONU, the size of version, CRC (CRC, Cyclical Redundancy Check) etc.Complete for notifying the ONU upgrade file to transmit, ONU carries out verification according to this integrality to version.
Upgrade file has been downloaded response message (image_transport_end_ack), for transmitting complete by ONU to OLT feedback upgrade file.Image_transport_end_ack message inclusion information: the LLID of download whether successful (success, failure), ONU etc.ONU relates to the following work of doing: upgrade file size and CRC check, if correct, file is write to spare memory area, and after completing, reply successfully; If mistake, directly reply unsuccessfully; The current memory block if ONU, without spare memory area, writes direct.
Upgrade file activation request message (image_activate_request), for activating and carry out an effective image upgrade file; The LLID of message inclusion information: ONU etc.Concrete, two kinds of situations are arranged:
1) ONU has two memory blocks of standby usage, requires ONU to hang up the software of primary startup memory block, restarts and the effective mirror image of load and execution spare memory area.
2) ONU only has a memory block, and what dereliction was standby divides, and directly restarts the image file of the current memory block of load and execution.
Upgrade file activates response message (image_activate_response), for image_activate_request is responded.Respectively according to different situations replys successfully, unsuccessfully (message parameter mistake, order not support, load unsuccessfully and wait).The LLID that comprises ONU self etc.
The upgrade file request message (image_commit_request) that comes into force, for activating upgrade file; The LLID of message inclusion information: ONU etc.Two kinds of situations are specifically arranged:
1) ONU has two memory blocks of standby usage, and current spare memory area software is become to primary memory block software, the software of acquiescence load and execution during as startup, and main area software becomes spare area software.ONU is restarted later, uses new primary memory block mirror image.
2) ONU only has a memory block, and what dereliction was standby divides, the image file of the acquiescence current memory block of start-up loading.
The upgrade file response message (image_commit_response) that comes into force, the response for to image_commit_request, complete upgrading.
The LLID field description of ONU in above-mentioned message, during batch upgrade, this field is filled out broadcast LLID=0x7FFF, fills out the LLID of specific ONU while upgrading separately.
Concrete escalation policy in the present invention, according to the actual situation of arranging net, roughly has following upgrading situation:
1) to specific certain ONU upgrading, to some selected ONU upgrading, the specific ONU of whole upgrading in batches;
2) under ONU, manufacturer is different, need the ONU of particular vendor be upgraded;
3) the ONU model is different, need be to particular vendor, and the ONU upgrading of specific model;
4) version of same model ONU also can exist different, if the version number of ONU divides T1, T2, T3, T4 etc.Version to be upgraded is T3, and named policer comprises:
A) version number is less than the T3 that upgrades to of T3, and version number is greater than will not upgrading of T3 etc.;
B) version number is greater than the T3 that upgrades to of T3, and version number is less than will not upgrading of T3 etc.;
C) the consistent ONU of all models upgrades to T3 without exception, no matter whether current version is T3;
D) the consistent ONU of model, so long as not T3, upgrade to T3 without exception.
Below to the upgrading of single ONU and to the upgrading of batch ONU, be further elaborated.
In the method that Fig. 3 is optical network unit remote upgrade of the present invention, to the flow chart of single ONU upgrading, as shown in Figure 3, in the present invention, OLT comprises the following steps single ONU upgrading:
Issue image_updata_request upgrade request message by OLT to specific ONU; Message carries version situation, escalation policy of vendor id under the LLID LLID that this specific ONU is corresponding, version to be upgraded, the corresponding model of this ONU, version to be upgraded etc.This message issues with clean culture LLID, the LLID that the LLID value is this specific ONU.
Above-mentioned specific ONU receives the image_updata_request message, if meet the demands, replys image_updata_response, is ready to receive version file.
After OLT receives the image_updata_response response, use image_download_request to transmit upgrade file, message is filled out the LLID of this specific ONU.For guaranteeing efficiency of transmission, every image_download_request encapsulates upgrade file by its maximum load as far as possible; Continue the next frame transmission after receiving the response success message of ONU, for improving transmission reliability, take retransmission mechanism, the number of retransmissions suggestion can be joined; If surpass still bust this of number of times, finish current upgrading flow process.And, when the enough little and image_download_request of upgrade file can carry, will directly by upgrade file, be packaged in image_download_request and send to OLT.When upgrade file is larger, upgrade file need be cut apart, and be sent to several times above-mentioned specific ONU.
After transferring the last frame upgrade file, OLT sends the image_download_end_notice message, notify this ONU upgrade file to transmit complete, ONU checks the upgrade file correctness, if correct, upgrade file is write to spare memory area, after writing, reply the image_download_end_ack message; The upgrade file mistake, directly reply unsuccessfully.
Upgrade file is write in the process of spare memory area, ONU may be busy, cause responding the image_download_end_notice message, therefore, the image_download_end_notice message can be considered to send repeatedly by the certain hour interval, and the time interval and repetition transmission times be arbitrary disposition on demand.Generally speaking, ONU equipment write the flash time can be over 3 minutes; Therefore the default time interval can arrange 30s, repeat the transmission times acquiescence and can be made as 6 times.
OLT, after receiving the image_download_end_ack message and confirming that the ONU upgrade file is downloaded successfully, sends the image_activate_request message, and ONU receives that the image_activate_request message restarts and activate the spare memory area upgrade file; (if ONU, without spare memory area, directly activates current renewal upgrade file).
ONU is restarted successfully, again after the authentication registration.OLT issues the image_commit_request message according to concrete condition, after notice ONU receives the image_commit_request message, current spare memory area is set to primary memory block, primary memory block before is made as standby, the acquiescence upgrade file starts primary memory block, response image_commit_response, the upgrade file upgrading is complete.ONU ignores this message during without spare memory area.
In the method that Fig. 4 is optical network unit remote upgrade of the present invention, to the flow chart of a plurality of ONU upgradings, as shown in Figure 4, in the present invention, the method for a plurality of ONU upgradings comprised:
OLT issues image_updata_request upgrade request message with the forms of broadcasting to all ONU under specific PON mouth; The LLID of ONU partly fills out version number, escalation policy of vendor id under broadcast LLID, upgrade file to be upgraded, applicable ONU model, upgrade file to be upgraded etc.Image_updata_request is handed down to the ONU under OLT by broadcast LLID.
ONU receives the image_updata_request message, for the ONU met the demands, replys image_updata_response, and is ready to receive upgrade file; If do not meet the demands, ignore this message.
OLT is according to receiving the response message of image_updata_response, learn under this PON mouth the ONU quantity that needs upgrading and the concrete condition of each ONU.OLT is used image_download_request to transmit version file, and in message, the LLID of ONU still fills out broadcast LLID.For guaranteeing efficiency of transmission, every frame is as far as possible by the maximum load encapsulation; Continue the next frame transmission after receiving the response success message of corresponding all ONU, for improving transmission reliability, take retransmission mechanism, the number of retransmissions suggestion can be joined; If surpass number of times, still have ONU to report bust this, record failure scenarios, but continue the transmission of subsequent frame; If all ONU to be upgraded all report bust this, stop transmission;
Step 4: transfer last frame, OLT sends the image_download_end_notice message, notify all ONU versions to be upgraded to transmit complete, ONU is according to the message audit version correctness of receiving, if correct, version is write to spare memory area, after, image_download_end_ack replied; If version error, directly reply unsuccessfully.
Upgrade file is write in the process of spare memory area, ONU may be busy, cause responding the image_download_end_notice message, therefore the image_download_end_notice message can be considered to send repeatedly by the certain hour interval, and the time interval and repetition transmission times configure on demand.Generally speaking, ONU equipment write the flash time can be over 3 minutes; Therefore the default time interval can arrange 30 seconds, repeat the transmission times acquiescence and can be made as 6 times.
For the situation of batch upgrade, OLT repeats to send the image_download_end_notice message for many times.And record according to the response condition of message the concrete condition that actual version is downloaded successful ONU.After surpassing number of retransmissions, the details such as ONU quantity that the final success of record is downloaded.After this, OLT sends the image_activate_request message, and ONU receives that message restarts and activate the spare memory area version; (if ONU, without spare memory area, directly activates current renewal version).
ONU is restarted successfully, again after the authentication registration.OLT issues the image_commit_request message according to the actual upgrade situation, after notice ONU receives message, current spare memory area is set to primary memory block, primary memory block before is made as standby, default version starts primary memory block, and response image_commit_response, edition upgrading is complete.ONU ignores this message during without spare memory area.This kind of situation, OLT also needs the re-transmission of certain number of times, guarantees the reliability of message, and finally obtains concrete quantity and other information of the ONU of edition upgrading success.
Situation for batch upgrade, the present invention is transmitted as example with downward message by broadcast LLID and is illustrated, it should be noted that, the OLT downward message also can transmit by clean culture LLID, just now OLT needs serial to be followed successively by a plurality of ONU that satisfy condition to be upgraded, thereby reach batch upgrade, wherein consistent with single ONU upgrading flow process specific to the upgrading to each ONU.
In addition, why the upgrading message that in the present invention, OLT sends needs to comprise LLID, and its effect is to distinguish location ONU, also can take other mode to reach this purpose.As: comprise MAC Address, logic ID of MAC Address, the equipment of the PON of ONU etc. in message.
When the present invention carries out batch upgrade by clean culture LLID, because each descending upgrading message OLT all needs to send out repeatedly, when upgrading ONU quantity is more, can relatively take cpu resource, efficiency is low, if CPU is excessively busy, may have influence on the business of other ONU under OLT; And by broadcast LLID while carrying out batch upgrade, the descending upgrading message of every frame OLT sends out and once get final product, under the situation that success is received by ONU, does not need to repeat transmission.Under more situation, can obviously alleviate the pressure of OLT at need upgradings ONU, raise the efficiency.Therefore, from efficiency, the upgrading message belongs to a kind of preferably implementation by broadcast LLID.
The composition structural representation of the system that Fig. 5 is optical network unit remote upgrade of the present invention, as shown in Figure 5, the system of optical network unit remote upgrade of the present invention comprises expanding element 50, transmitting element 51, the first receiving element 52, determining unit 53, cutting unit 54, the second receiving element 55 and write and enable unit 56, wherein, expanding element 50 is for being expanded the Operation, Administration and Maintenance protocol Data Unit, supporting body as the mutual message of upgrading between optical network unit and optical line terminal, wherein, the mutual message of described upgrading comprises upgrade request and response message thereof, upgrade file transmits request and response message thereof, upgrade file has transmitted notice and response message thereof, upgrade file activation request and response message thereof, the upgrade file request of coming into force and response message thereof, transmitting element 51 is arranged in described optical line terminal, for send described upgrade request message to described optical network unit, the first receiving element 52 is arranged in described optical line terminal, the described upgrading response message sent for receiving described optical network unit, determining unit 53 is arranged in described optical line terminal, for determining whether described optical network unit allows upgrading, further determine during permission whether upgrade file can be transmitted request message by a upgrade file and carry, can the time trigger transmitting element 51 and directly described upgrade file sent to described optical network unit, can not the time trigger cutting unit 54, cutting unit 54 is for described upgrade file is cut apart, and transmitting element 51 sends to respectively described optical network unit by the described upgrade file after cutting apart, the second receiving element 55 is arranged in described optical network unit, for the upgrade file that receives described optical line terminal transmission, has transmitted the notice message, write and enable unit 56 and transmitted notice and described upgrade file is write to spare memory area or current memory block after message for receive described upgrade file at the second receiving element 55, and the memory block that will write described upgrade file is as primary memory block.
Wherein, the maximum load-carrying capacity that cutting unit 54 transmits request message by described upgrade file is the described upgrade file of unit.After writing and enable unit 56 described upgrade file being write to spare memory area, receive at the second receiving element 55 described upgrade file that described optical line terminal sends and come into force after request message, will write the spare memory area of described upgrade file as primary memory block.
Optical network unit quantity to be upgraded under optical line terminal lower than or during not higher than setting threshold, transmitting element 51 adopts mode of unicast to be upgraded to described optical network unit to be upgraded, otherwise transmitting element 51 adopts broadcast mode to be upgraded to described optical network unit to be upgraded.Transmitting element 51 sends described upgrade request message, described upgrade file to described optical network unit and transmits request message, described upgrade file and has transmitted and notify message, described upgrade file activation request message or described upgrade file to come into force after request message, while in setting duration, not receiving corresponding response message, transmitting element 51 will be retransmitted corresponding request message.
Those skilled in the art are to be understood that, the system of the optical network unit remote upgrade shown in Fig. 5 is that the method for realizing light aforementioned network unit remote upgrade designs, in system shown in Fig. 5, the function of each processing unit can be understood with reference to the associated description in the method for aforementioned network unit remote upgrade, the function of each processing unit can realize by the program run on processor, also can realize by concrete logical circuit.
Technical scheme of the present invention is applicable to current Ethernet passive optical network, also is applicable to follow-up 10GEPON.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. the method for an optical network unit remote upgrade, it is characterized in that, the Operation, Administration and Maintenance protocol Data Unit is expanded, supporting body as the mutual message of upgrading between optical network unit and optical line terminal, wherein, the mutual message of described upgrading comprises, the upgrade request and the response message thereof that comprise upgrading object ONU LLID LLID, upgrade file transmits request and response message thereof, upgrade file has transmitted notice and response message thereof, upgrade file activation request and response message thereof, the upgrade file request of coming into force and response message thereof, described method also comprises:
Described optical line terminal sends described upgrade request message to described optical network unit, and determine after the described upgrading response message that receives described optical network unit transmission whether described optical network unit allows upgrading, judge during permission whether upgrade file can be transmitted request message by a upgrade file and carry, if could directly described upgrade file would be sent to described optical network unit, otherwise, described upgrade file is cut apart, and the described upgrade file after cutting apart is sent to respectively to described optical network unit;
After described optical network unit receives upgrade file that described optical line terminal sends and transmitted and notify message, described upgrade file is write to spare memory area or current memory block, and the memory block that will write described upgrade file is as primary memory block.
2. method according to claim 1, is characterized in that, described described upgrade file cut apart, and comprising: the maximum load-carrying capacity that transmits request message by described upgrade file is the described upgrade file of unit.
3. method according to claim 1, it is characterized in that, after described optical network unit writes spare memory area by described upgrade file, after the described upgrade file that receives described optical line terminal transmission comes into force request message, will write the spare memory area of described upgrade file as primary memory block.
4. according to the method in any one of claims 1 to 3, it is characterized in that, described method also comprises:
Optical network unit quantity to be upgraded under described optical line terminal lower than or during not higher than setting threshold, described optical line terminal adopts mode of unicast to be upgraded to described optical network unit to be upgraded, otherwise described optical line terminal adopts broadcast mode to be upgraded to described optical network unit to be upgraded.
5. method according to claim 4, is characterized in that, described method also comprises:
Described optical line terminal sends described upgrade request message, described upgrade file to described optical network unit and transmits request message, described upgrade file and has transmitted and notify message, described upgrade file activation request message or described upgrade file to come into force after request message, while in setting duration, not receiving corresponding response message, will retransmit corresponding request message.
6. the system of an optical network unit remote upgrade, is characterized in that, comprising:
Expanding element, for the Operation, Administration and Maintenance protocol Data Unit is expanded, supporting body as the mutual message of upgrading between optical network unit and optical line terminal, wherein, the mutual message of described upgrading comprises, the upgrade request that comprises upgrading object ONU LLID LLID and response message thereof, upgrade file transmit that request and response message thereof, upgrade file have transmitted notice and response message, upgrade file activation request and response message thereof, upgrade file comes into force and asks and response message;
Transmitting element, be arranged in described optical line terminal, for send described upgrade request message to described optical network unit;
The first receiving element, be arranged in described optical line terminal, the described upgrading response message sent for receiving described optical network unit;
Determining unit, be arranged in described optical line terminal, for determining whether described optical network unit allows upgrading, determine during permission whether upgrade file can be transmitted request message by a upgrade file and carry, can the time trigger described transmitting element and directly described upgrade file sent to described optical network unit, can not the time trigger cutting unit;
Cutting unit, for described upgrade file is cut apart, described transmitting element sends to respectively described optical network unit by the described upgrade file after cutting apart;
The second receiving element, be arranged in described optical network unit, for the upgrade file that receives described optical line terminal transmission, transmitted the notice message;
Write and enable unit, has transmitted after notifying message described upgrade file is write to spare memory area or current memory block for receive described upgrade file at described the second receiving element, and the memory block that will write described upgrade file is as primary memory block.
7. system according to claim 6, is characterized in that, the maximum load-carrying capacity that described cutting unit transmits request message by described upgrade file is the described upgrade file of unit.
8. system according to claim 6, it is characterized in that, said write and enable unit described upgrade file write to spare memory area after, receive at described the second receiving element described upgrade file that described optical line terminal sends and come into force after request message, will write the spare memory area of described upgrade file as primary memory block.
9. according to the described system of any one in claim 6 to 8, it is characterized in that, optical network unit quantity to be upgraded under described optical line terminal lower than or during not higher than setting threshold, described transmitting element adopts mode of unicast to be upgraded to described optical network unit to be upgraded, otherwise described transmitting element adopts broadcast mode to be upgraded to described optical network unit to be upgraded.
10. system according to claim 9, it is characterized in that, described transmitting element sends described upgrade request message, described upgrade file to described optical network unit and transmits request message, described upgrade file and has transmitted and notify message, described upgrade file activation request message or described upgrade file to come into force after request message, while in setting duration, not receiving corresponding response message, described transmitting element will be retransmitted corresponding request message.
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