CN102316392A - Method for realizing optical network unit (ONU) redundancy protection in fiber to the home (FTTH) network, apparatus and system thereof - Google Patents
Method for realizing optical network unit (ONU) redundancy protection in fiber to the home (FTTH) network, apparatus and system thereof Download PDFInfo
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- CN102316392A CN102316392A CN201110284219A CN201110284219A CN102316392A CN 102316392 A CN102316392 A CN 102316392A CN 201110284219 A CN201110284219 A CN 201110284219A CN 201110284219 A CN201110284219 A CN 201110284219A CN 102316392 A CN102316392 A CN 102316392A
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Abstract
The invention provides a method for realizing optical network unit (ONU) redundancy protection in a fiber to the home (FTTH) network, an apparatus and a system thereof. The system comprises: an optical line terminal (OLT), an optical splitter, primary ONUs and standby ONUs, wherein the primary ONUs and the standby ONUs are connected with each user. When receiving an equipment alarm, the OLT determines whether the type of the equipment alarm is the type of triggering ONU protection switching. When the type of the equipment alarm is the type of triggering ONU protection switching, an UNI of the standby ONUs is opened. Business services can be provided for the user through the UNI of the standby ONUs. In the invention, the primary ONUs and the standby ONUs are arranged on a user side. When the ONU of the user side goes wrong, a standby state can be switched into, realization and recovery of the service can be guaranteed. Therefore, security and reliability of the service can be raised.
Description
Technical field
The present invention relates to communication technical field, (Fiber to the Home FTTH) realizes optical network unit (Optical Network Unit, ONU) method of redundancy protecting, Apparatus and system in the network to relate in particular to a kind of fiber-to-the-home.
Background technology
Along with the continuous maturation of next generation network technology, the user has proposed increasingly high requirement to capacity, speed, quality and the service of network.The FTTH network can satisfy user's various requirement, thereby can become the application mainstream that bandwidth of future generation inserts.Formed the kinds of protect technology in the FTTH protect networks with safely at present, the optical link protection comprises: TYPE-A protection, TYPE-B protect, TYPE-C protects and the TYPE-D protection.
Fig. 1 is the networking structure sketch map of TYPE-A protection in the protection of prior art optical link; Optical line terminal (optical line terminal; OLT) two passive optical-fiber networks (Passive Optical Network; PON) (Media Access Control, MAC) chip are connected to first optical module and second optical module through 1: 2 electric switch to PON media interviews control of mouthful employing; First optical module and second optical module are connected to the 1st～N the PON mouth among the ONU respectively through the 2:N optical branching device, thereby realize the protection to two PON mouths in the OLT.This protected mode is a kind of based on resist technology between the PON mouth in the same PON plate.OLT optical module subsequent use in this resist technology is in cold standby state, is detected and is realized switching by OLT.
Fig. 2 is the networking structure sketch map of TYPE-B protection in the protection of prior art optical link; Two PON mouths of OLT adopt independently PON MAC chip and optical module respectively; The optical module of the optical module of the one PON mouth and the 2nd PON mouth is connected respectively to the 1st～N the PON mouth among the ONU through the 2:N optical branching device, thereby realizes the protection to two PON mouths in the OLT.This protected mode be a kind of in same PON plate with different PON plates between PON mouth protected mode.PON interface subsequent use among the OLT is in cold standby state; Whole handoff procedure is accomplished by OLT; And OLT can guarantee that main business information with the PON mouth can backed up in synchronization arrive subsequent use PON mouth, makes that it is constant that subsequent use PON mouth can be kept the professional attribute of ONU in the protection handoff procedure.
Fig. 3 is the networking structure sketch map of TYPE-C protection in the protection of prior art optical link; The OLT double-PON port; Two optical modules among each ONU; The equal two-way of main fiber, optical branching device (1:N) and branch optical fiber is redundant, and two optical modules of ONU are connected to the primary and backup PON mouth of OLT respectively through optical branching device, this protected mode be a kind of in same PON plate with different PON plates between PON mouth protected mode.The primary and backup PON mouth of OLT is all in running order, and ONU and OLT can detect Link State, and whether decision switches according to Link State.OLT should be able to guarantee that main business information with the PON mouth can backed up in synchronization arrive subsequent use PON mouth, makes that the service attribute that subsequent use PON mouth can be kept ONU is constant in the protection reversed process.
Fig. 4 is the networking structure sketch map of TYPE-D protection in the protection of prior art optical link; The OLT double-PON port; Two optical modules in the ONU double-PON port; The equal two-way of main fiber, optical branching device (1:N) and distribution optical fiber is redundant, and two PON mouths of ONU are connected on the primary and backup PON mouth of OLT through optical branching device respectively, this protected mode be a kind of in same PON plate with different PON plates between PON mouth protected mode.The primary and backup PON mouth of OLT is all in running order, and OLT should be able to guarantee that main business information with the PON mouth can backed up in synchronization arrive subsequent use PON mouth, and the service attribute that subsequent use PON mouth can be kept ONU in the feasible protection reversed process is constant.ONU has two independently PON mouths under this protected mode, and is registered to respectively on two PON mouths of OLT, and two PON mouths of ONU are operated in one main one and are equipped with state.ONU should be able to guarantee that the master gets business information with the PON mouth and can backed up in synchronization arrive subsequent use PON mouth, makes that it is constant that ONU can keep the local service attribute in the PON mouth reversed process, need not carry out initial configuration and the service attribute configuration of ONU.
Above-mentioned several kinds of FTTH network protection modes all are based on other protection of circuit and PON MAC level, on fibre circuit and PON MAC, realize the redundant technique of 1+1, realize the protection of circuit and main line level.But when faults such as User Network Interface (UNI) fault of the ONU power down that runs into the user, ONU, optical fiber opens circuit and ONU lost efficacy, damage, business still can't be protected and recover.
Summary of the invention
The present invention provides method, the Apparatus and system of realizing the ONU redundancy protecting in a kind of FTTH network, when going wrong in order to the ONU that solves user in the prior art, and the problem that causes business to be protected and to recover.
The present invention provides in a kind of fiber-to-the-home FTTH network the system that realizes the optical network unit ONU redundancy protecting, it is characterized in that, in the said system: optical line terminal OLT, 1:N optical branching device and leading with ONU and subsequent use ONU of being connected with each user;
Said OLT; Judge whether to receive equipment alarm; When receiving equipment alarm, judge whether this equipment alarm type is to trigger ONU to protect the equipment alarm type of switching, when this equipment alarm type is when triggering the equipment alarm type of ONU protection switching; Open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user;
Said subsequent use ONU is when User Network Interface is opened, for the user provides business service.
The present invention provides the method that realizes the optical network unit ONU redundancy protecting in a kind of fiber-to-the-home FTTH network, it is characterized in that, the master is connected with the user respectively with subsequent use ONU with ONU in the said method, and this method comprises:
Judge whether to receive equipment alarm;
When receiving equipment alarm, judge whether this equipment alarm type is to trigger the equipment alarm type that the ONU protection is switched;
When this equipment alarm type during for the equipment alarm type that triggers the ONU protection and switch, open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
The present invention provides the device of realizing the optical network unit ONU redundancy protecting in a kind of fiber-to-the-home FTTH network, it is characterized in that said device comprises:
Judge module is used to judge whether to receive equipment alarm; When receiving equipment alarm, judge whether this equipment alarm type is to trigger the equipment alarm type that the ONU protection is switched;
Handover module is used for opening the User Network Interface of subsequent use ONU when this equipment alarm type during for the equipment alarm type that triggers the ONU protection and switch, and the User Network Interface through this subsequent use ONU provides business service for the user.
The present invention provides method, the Apparatus and system of realizing the ONU redundancy protecting in a kind of FTTH network; This system comprise OLT, optical branching device and be connected with each user main with ONU and subsequent use ONU; When OLT received equipment alarm, whether the judgment device alarm type was to trigger ONU to protect the equipment alarm type of switching, when this equipment alarm type is when triggering the equipment alarm type of ONU protection switching; Then open the UNI of subsequent use ONU, the UNI stomach user through subsequent use ONU provides business service.Owing to be provided with the master with ONU and subsequent use ONU at user side in the present invention, therefore, when user side ONU goes wrong, can switch to stand-by state, guarantee business realization and recovery, thereby improved service security property and reliability.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the networking structure sketch map of TYPE-A protection in the protection of prior art optical link;
Fig. 2 is the networking structure sketch map of TYPE-B protection in the protection of prior art optical link;
Fig. 3 is the networking structure sketch map of TYPE-C protection in the protection of prior art optical link;
Fig. 4 is the networking structure sketch map of TYPE-D protection in the protection of prior art optical link;
Fig. 5 is a system group network structural representation of realizing the ONU redundancy protecting in this FTTH network provided by the invention;
Fig. 6 is a system group network structural representation of realizing the ONU redundancy protecting in the another kind of FTTH network provided by the invention;
Fig. 7 is the process based on the ONU redundancy protecting of the networking structure realization of above-mentioned Fig. 5 and Fig. 6;
Fig. 8 is an apparatus structure sketch map of realizing the optical network unit ONU redundancy protecting in a kind of fiber-to-the-home FTTH network provided by the invention.
Embodiment
The present invention realizes the professional professional recovery that guarantees for when user side ONU goes wrong, and improves professional reliability and fail safe, and method, the Apparatus and system of realizing the ONU redundancy protecting in a kind of FTTH network are provided.
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 5 is a system group network structural representation of realizing the ONU redundancy protecting in this FTTH network provided by the invention, comprises in this system: OLT, 1:N optical branching device and leading with ONU and subsequent use ONU of being connected with each user.
PON mouth in this system among the OLT is connected respectively to the master with the PON mouth of ONU and the PON mouth of subsequent use ONU through the 1:N optical branching device, the main terminal that all is connected same user with ONU and subsequent use ONU respectively.
In this networking structure; What be connected with same user's terminal is main all in running order with ONU and subsequent use ONU; In order to guarantee in the process that protection is switched; It is constant to keep follow-up service attribute, preserves the main information with ONU and subsequent use ONU of configuration among the OLT of the present invention, and the master of this configuration is consistent with the information of ONU and subsequent use ONU.
Fig. 6 is a system group network structural representation of realizing the ONU redundancy protecting in the another kind of FTTH network provided by the invention, comprises in this system: OLT, 1:N optical branching device and leading with ONU and subsequent use ONU of being connected with each user.
Adopt double-PON port based on other resist technology of ONU level in this system; The OLT double-PON port, ONU adopts two, is respectively main with ONU and subsequent use ONU; Wherein the master is connected with same user with subsequent use ONU with ONU, and the equal two-way of trunk optical fiber, optical branching device and distribution optical fiber is redundant at this moment.In this group network system, the master of OLT inside is connected to be connected with each user main with the PON mouth of ONU and the PON mouth of subsequent use ONU through 1:N optical branching device correspondence respectively with PON mouth and subsequent use PON mouth.
In this networking structure; What be connected with same user's terminal is main all in running order with ONU and subsequent use ONU; In order to guarantee that it is constant to keep follow-up service attribute in the process that protection is switched, OLT of the present invention is synchronized to subsequent use PON mouth with said master with the business information in the PON mouth; And main with disposing main information with ONU and subsequent use ONU in PON mouth and the subsequent use PON mouth, wherein configuration is main consistent with the information of ONU and subsequent use ONU.
Fig. 7 is that this process may further comprise the steps based on the process of the ONU redundancy protecting of the networking structure realization of above-mentioned Fig. 5 and Fig. 6:
S701: redundancy protecting begins.
S702: judge whether to receive equipment alarm, when judgement receives equipment alarm, carry out step S703, otherwise, carry out step S702.
S703: judge whether this equipment alarm type is to trigger ONU to protect the equipment alarm type of switching, and when this equipment alarm type is the equipment alarm type of triggering ONU protection switching, carries out step S704, otherwise, carry out step S702.
S704: open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
And; When for the user business service being provided through subsequent use ONU; Can think that this moment, this subsequent use ONU became the main ONU that uses; Because this moment, the master used ONU as the user business service not to be provided, can think that the main ONU of use is subsequent use ONU at this moment, realizes that afterwards the method for ONU redundancy protecting is identical with said method.
The concrete equipment alarm type that triggers ONU protection switching in the present invention comprises:
The passive optical-fiber network PON mouth loss of signal alarm of optical line terminal OLT, the main ONU alarm for power-off of using, main with the disconnected fine alarm of ONU and main with the fault warning of ONU User Network Interface.
Fig. 8 is an apparatus structure sketch map of realizing the optical network unit ONU redundancy protecting in a kind of fiber-to-the-home FTTH network provided by the invention, and said device comprises:
Said handover module 82; Specifically being used for working as the judgment device alarm type is the passive optical-fiber network PON mouth loss of signal alarm of optical line terminal OLT; The main ONU alarm for power-off of using; Main with the disconnected fine alarm of ONU or main during with the fault warning of ONU User Network Interface, open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
Concrete, this device can be arranged in OLT.
The present invention provides method, the Apparatus and system of realizing the ONU redundancy protecting in a kind of FTTH network; This system comprise OLT, optical branching device and be connected with each user main with ONU and subsequent use ONU; When OLT received equipment alarm, whether the judgment device alarm type was to trigger ONU to protect the equipment alarm type of switching, when this equipment alarm type is when triggering the equipment alarm type of ONU protection switching; Then open the UNI of subsequent use ONU, the UNI stomach user through subsequent use ONU provides business service.Owing to be provided with the master with ONU and subsequent use ONU at user side in the present invention, therefore, when user side ONU goes wrong, can switch to stand-by state, guarantee business realization and recovery, thereby improved service security property and reliability.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of accompanying claims of the present invention.
Claims (10)
1. realize the system of optical network unit ONU redundancy protecting in the fiber-to-the-home FTTH network, it is characterized in that, in the said system: optical line terminal OLT, 1:N optical branching device and leading of being connected with each user with ONU and subsequent use ONU;
Said OLT; Judge whether to receive equipment alarm; When receiving equipment alarm, judge whether this equipment alarm type is to trigger ONU to protect the equipment alarm type of switching, when this equipment alarm type is when triggering the equipment alarm type of ONU protection switching; Open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user;
Said subsequent use ONU is when User Network Interface is opened, for the user provides business service.
2. the system of claim 1; It is characterized in that said OLT is the passive optical-fiber network PON mouth loss of signal alarm of optical line terminal OLT at the judgment device alarm type; The main ONU alarm for power-off of using; Main with the disconnected fine alarm of ONU or main during with the fault warning of ONU User Network Interface, open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
3. the system of claim 1 is characterized in that, said OLT, its inner passive optical-fiber network PON mouth are connected to the main PON mouth with ONU and subsequent use ONU that is connected with each user through the 1:N optical branching device.
4. system as claimed in claim 3 is characterized in that, in the said system,
Said OLT preserves the main information with ONU and subsequent use ONU that disposes, and wherein configuration is main consistent with the information of ONU and subsequent use ONU.
5. the system of claim 1 is characterized in that, said OLT, its inner master are connected to the main PON mouth with ONU and subsequent use ONU that is connected with each user with passive optical-fiber network PON mouth and subsequent use PON mouth through 1:N optical branching device correspondence.
6. system as claimed in claim 5; It is characterized in that; Said OLT; Said master is synchronized to subsequent use PON mouth with the business information in the PON mouth, and it is said main with disposing main information with ONU and subsequent use ONU in PON mouth and the subsequent use PON mouth, and wherein configuration is main consistent with the information of ONU and subsequent use ONU.
7. realize the method for optical network unit ONU redundancy protecting in the fiber-to-the-home FTTH network, it is characterized in that mainly in the said method be connected with the user respectively with subsequent use ONU with ONU, this method comprises:
Judge whether to receive equipment alarm;
When receiving equipment alarm, judge whether this equipment alarm type is to trigger the equipment alarm type that the ONU protection is switched;
When this equipment alarm type during for the equipment alarm type that triggers the ONU protection and switch, open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
8. method as claimed in claim 7 is characterized in that, the equipment alarm type that said triggering ONU protection is switched comprises:
The passive optical-fiber network PON mouth loss of signal alarm of optical line terminal OLT, the main ONU alarm for power-off of using, main with the disconnected fine alarm of ONU and main with the fault warning of ONU User Network Interface.
9. realize the device of optical network unit ONU redundancy protecting in the fiber-to-the-home FTTH network, it is characterized in that said device comprises:
Judge module is used to judge whether to receive equipment alarm; When receiving equipment alarm, judge whether this equipment alarm type is to trigger the equipment alarm type that the ONU protection is switched;
Handover module is used for opening the User Network Interface of subsequent use ONU when this equipment alarm type during for the equipment alarm type that triggers the ONU protection and switch, and the User Network Interface through this subsequent use ONU provides business service for the user.
10. device as claimed in claim 9; It is characterized in that, said handover module, specifically being used for working as the judgment device alarm type is the passive optical-fiber network PON mouth loss of signal alarm of optical line terminal OLT; The main ONU alarm for power-off of using; Main with the disconnected fine alarm of ONU or main during with the fault warning of ONU User Network Interface, open the User Network Interface of subsequent use ONU, the User Network Interface through this subsequent use ONU provides business service for the user.
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| CN201110284219A CN102316392A (en) | 2011-09-22 | 2011-09-22 | Method for realizing optical network unit (ONU) redundancy protection in fiber to the home (FTTH) network, apparatus and system thereof |
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| CN201110284219A CN102316392A (en) | 2011-09-22 | 2011-09-22 | Method for realizing optical network unit (ONU) redundancy protection in fiber to the home (FTTH) network, apparatus and system thereof |
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| CN102932698A (en) * | 2012-11-12 | 2013-02-13 | 武汉长光科技有限公司 | Ethernet passive optical network (EPON) system with hand-in-hand protection structure |
| CN103095501A (en) * | 2013-01-21 | 2013-05-08 | 南京南瑞集团公司 | Real-time monitoring method of optical network unit (ONP) operating state |
| WO2017000710A1 (en) * | 2015-06-29 | 2017-01-05 | 中兴通讯股份有限公司 | Optical network unit (onu) management method and message processing method and device |
| CN110809203A (en) * | 2019-10-15 | 2020-02-18 | 四川天邑康和通信股份有限公司 | System and method for expanding FTTH network by master-slave ONT |
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