CN101610239B - Device and method for realizing in-band OMA between OLT and ONUs in GEPON - Google Patents
Device and method for realizing in-band OMA between OLT and ONUs in GEPON Download PDFInfo
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Abstract
The invention relates to a device and a method for realizing in-band OMA between an OLT and ONUs in a GEPON. The device comprises the OLT and one or more ONUs connected with the OLT through a light splitter, wherein the OLT comprises a first OMA module; each ONU comprises a second OMA module and an application module; a remote management module is used for receiving an OMA management request and forwards the OMA management request to the first OMA module; the first OMA module assembles the OMA management request into custom-type Ethernet frames and transmits the custom-type Ethernet frames to the second OMA module; the second OMA module transmits the OMA management request to the application module; and the application module is used for carrying out the OMA to the ONUs according to the OMA management request. The device and the method can realize centralized management of the ONUs through the remote management module at the OLT side, so that network management is simplified, and the application module provides rich management means for services of the ONUs.
Description
Technical field
The present invention provides and belongs to network management technology field in gigabit ethernet passive optical network (GEPON) band, the devices and methods therefor of the interior OAM of band between optical line terminal (OLT) equipment that is specifically related to GEPON and the optical network unit (ONU).
Background technology
EPON (PON) system adopts the passive light transmission medium, has characteristics such as system reliability height, maintenance cost is low, service transparency good, cost is relatively low, is considered to the development trend that following fixed broadband inserts.Ethernet passive optical network (EPON) adopts the ethernet data link layer agreement of expansion on the architectural framework basis of EPON, have advantages such as agreement is simple, cost is low, professional ability is strong.
Since the EPON notion proposes, received showing great attention to of industry.First kilometer Ethernet alliance (EFMA) of IEEE (IEEE) issued the technical specification IEEE 802.3ah of EPON in June, 2004, received the extensive support of industry, and relevant chip and equipment are all released, and certain application is also arranged.IEEE 802.3ah has formulated related specifications to the physical layer and the data link layer of gigabit ethernet passive optical network (GEPON) system.This technical specification is to the augmenting of IEEE 802.3 standards, and continues to use IEEE 802.3 original media access control sublayer, MAC control sublayer and each relevant physical sublayer as much as possible.In addition; This technical specification is in order to strengthen the management function of Ethernet; Also defined network operation, administer and maintain (Operations, Administration and Maintenance, the OAM) content of mechanism is for the management of ONU provides certain support; So that the O&M of network and troubleshooting, but the requirement of this can't reach Fiber to the home (FTTH) operation.The OAM that defines in this technical specification is merely able to manage the PON port of ONU equipment, and to the upward management of operation layer correlation function of ONU, information such as for example configuration, reporting events, alarm report can only realize through the OAM agreement that each manufacturer expands voluntarily.
Among the IEEE 802.3ah about the Ether frame of slow agreement (SLOW PROTOCOL) type used in the transmission of the regulation of OAM agreement, the subtype of Ether frame be 3 be defined as SLOW PROTOCOL.This frame all has certain restriction at transport process for the length of sending frequency and transmission.Ether frame for the type all can be intercepted and captured by medium access control (MAC) layer, and can not continue to issue diffusion.When the OAM agreement of using IEEE 802.3ah definition is carried out the management of ONU, owing to the reason of agreement self can't be carried out data such as exchange of management rapidly and efficiently.This agreement per second can only transmit ten frame data.
The OAM that defines among the IEEE 802.3ah is merely able to manage the PON port of ONU equipment, and can only realize that through the OAM agreement that each manufacturer expands voluntarily this is restricted with regard to the interoperability that makes equipment to the management of the user port of ONU.If an EPON system uses the 1550nm wavelength to transmit descending digital television broadcasting; If a user quits the subscription of this service; Operator just need close the video interface of corresponding ONU; And this function has only ONU is configured in advance and can realizes, the correlation technique standard can't be supported this at present.
In addition, description is not all done in the aspects such as authentication, service quality (QoS) assurance, operation layer function (like the professional carrying of multicast, VoIP and TDM, VLAN etc.), assignment and management of Dynamic Bandwidth Allocation, terminal equipment.And with regard to concrete equipment was realized, these functions all were essential.
Summary of the invention
The objective of the invention is to, a kind of high speed is provided, in GEPON, realizes between OLT and the ONU devices and methods therefor of OAM in the band efficiently, to eliminate the OAM data in the restriction of transport process for the length of transmission frequency and transmission.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
Be faster and better transmission OAM data, the present invention handles the Ether frame that transmits.The type of the Ether frame through change transmitting OAM message is sent at OLT and ONU, the Ether frame of the OAM message of acceptance all is the Ether frame of customization type.
A kind ofly in GEPON, realize between OLT and the ONU device of OAM in the band; Comprise OLT and the one or more ONU that are connected with said OLT communication; It is characterized in that: said OLT comprises an OAM module and is connected an OAM module with said remote supervision module communication that said ONU comprises the 2nd OAM module and the application program module that is connected with said the 2nd OAM module communication; Wherein: said remote supervision module is used to receive the OAM management request, and this OAM management request is transmitted to a said OAM module; A said OAM module is used to receive the OAM management request that said remote supervision module is transmitted, and the Ether frame that this OAM management request is assembled into customization type is sent to said the 2nd OAM module; Said the 2nd OAM module is used to receive the OAM management request of the Ether frame of said customization type, and this OAM management request is sent to said application program module; Said application program module is used for according to the OAM management request this ONU being carried out OAM.
A kind ofly in GEPON, realize between OLT and the ONU method of OAM in the band, the employing said apparatus specifically may further comprise the steps:
The step of on OLT, carrying out:
After said far module is received the OAM management request, this OAM management request is transmitted to a said OAM module, after a said OAM module was received the OAM management request, the Ether frame that this OAM management request is assembled into customization type was sent to the 2nd OAM module;
The step of on ONU, carrying out:
Said the 2nd OAM module is sent to said application program module with this OAM management request after receiving the OAM management request of Ether frame of customization type, according to the OAM management request this ONU is carried out OAM by said application program module.
Further, comprise that also OAM result returns step, after said application program module was carried out OAM according to the OAM management request to this ONU, said application program module generated OAM result, and this is back to OLT.
Further, said OAM result is back to OLT and specifically may further comprise the steps:
The step of on ONU, carrying out:
Said application program module generates OAM result, and this OAM result is transmitted to said the 2nd OAM module, and after said the 2nd OAM module was received the OAM management request, the Ether frame that this OAM result is assembled into customization type was sent to an OAM module;
The step of on OLT, carrying out:
A said OAM module is sent to said remote supervision module with this OAM result after receiving the OAM result of Ether frame of customization type.
The present invention can be easily realizes the centralized management to ONU in the OLT side through remote supervision module, has so both simplified Network Management, to the business of ONU abundant management means is provided through said application program module simultaneously.
Description of drawings
Fig. 1 realizes the apparatus structure sketch map of in-band management between OLT and the ONU in GEPON for the present invention;
Fig. 2 is the structural representation of the telemanagement of the realization ONU of employing apparatus of the present invention in the GEPON project.
Embodiment
As shown in Figure 1; A kind ofly in GEPON, realize between OLT and the ONU device of OAM in the band; Comprise OLT and the one or more ONU that are connected with said OLT communication; Wherein said OLT comprises an OAM module and is connected an OAM module with said remote supervision module communication that said ONU comprises the 2nd OAM module and the application program module that is connected with said the 2nd OAM module communication; Wherein: said remote supervision module is used to receive the OAM management request, and this OAM management request is transmitted to a said OAM module; A said OAM module is used to receive the OAM management request that said remote supervision module is transmitted, and the Ether frame that this OAM management request is assembled into customization type is sent to said the 2nd OAM module; Said the 2nd OAM module is used to receive the OAM management request of the Ether frame of said customization type, and this OAM management request is sent to said application program module; Said application program module is used for according to the OAM management request this ONU being carried out OAM.
A kind ofly in GEPON, realize between OLT and the ONU method of OAM in the band, adopt above-mentioned in GEPON the device of in-band management between realization OLT and the ONU, may further comprise the steps:
The step of on OLT, carrying out:
After said far module is received the OAM management request, this OAM management request is transmitted to a said OAM module, after a said OAM module was received the OAM management request, the Ether frame that this OAM management request is assembled into customization type was sent to the 2nd OAM module;
The step of on ONU, carrying out:
Said the 2nd OAM module is sent to said application program module with this OAM management request after receiving the OAM management request of Ether frame of customization type, according to the OAM management request this ONU is carried out OAM by said application program module.
Further, comprise that also OAM result returns step, after said application program module was carried out OAM according to the OAM management request to this ONU, said application program module generated OAM result, and this is back to OLT.
Further, said OAM result is back to OLT and specifically may further comprise the steps:
The step of on ONU, carrying out:
Said application program module generates OAM result, and this OAM result is transmitted to said the 2nd OAM module, and after said the 2nd OAM module was received the OAM management request, the Ether frame that this OAM result is assembled into customization type was sent to an OAM module;
The step of on OLT, carrying out:
A said OAM module is sent to said remote supervision module with this OAM result after receiving the OAM result of Ether frame of customization type.
Through said application program module, can carry out authentication, service quality (QoS) assurance, operation layer function (like the professional carrying of multicast, VoIP and time division multiplexing (TDM), Virtual Local Area Network etc.), assignment and the management of Dynamic Bandwidth Allocation, terminal equipment neatly to corresponding ONU.
Fig. 2 is the structural representation of the telemanagement of the realization ONU in the GEPON project behind the employing said method.The inventive method can be easily realizes the centralized management to ONU in the OLT side through remote supervision module, has so both simplified Network Management, to the business of ONU abundant management means is provided through said application program module simultaneously.
Claims (4)
1. in gigabit ethernet passive optical network GEPON, realize between optical line terminal OLT and the optical network unit ONU device of OAM in the band for one kind; Comprise optical line terminal OLT and the one or more optical network unit ONU that are connected with said optical line terminal OLT communication; It is characterized in that: said OLT comprises first network operation, administers and maintains machine-processed OAM module and the remote supervision module that is connected with an OAM module communication, said optical network unit ONU comprises second network operation, administer and maintain machine-processed OAM module with said second network operation, administer and maintain the application program module that machine-processed OAM module communication is connected; Wherein: said remote supervision module is used to receive the OAM management request, and this OAM management request is transmitted to said first network operation, administers and maintains machine-processed OAM module; Said first network operation, administer and maintain machine-processed OAM module and be used to receive network operation that said remote supervision module transmits, administer and maintain machine-processed OAM management request, with this network operation, administer and maintain the Ether frame that machine-processed OAM management request is assembled into customization type and be sent to said second network operation, administer and maintain machine-processed OAM module; Said second network operation, administer and maintain network operation that machine-processed OAM module is used to receive the Ether frame of said customization type, administer and maintain machine-processed OAM management request, with this network operation, administer and maintain machine-processed OAM management request and be sent to said application program module; Said application program module is used for according to network operation, administer and maintain machine-processed OAM management request carries out OAM to this optical network unit ONU.
2. in GEPON, realize between optical line terminal OLT and the optical network unit ONU method of OAM in the band for one kind; Adopt that claim 1 is described to realize between optical line terminal OLT and the optical network unit ONU device of OAM in the band in GEPON, it is characterized in that may further comprise the steps:
The step of on optical line terminal OLT, carrying out:
After said remote supervision module is received the OAM management request; This OAM management request is transmitted to a said OAM module; Said first network operation, administer and maintain machine-processed OAM module and receive network operation, administer and maintain machine-processed OAM management request after, with this network operation, administer and maintain the Ether frame that machine-processed OAM management request is assembled into customization type and be sent to second network operation, administer and maintain machine-processed OAM module;
The step of on optical network unit ONU, carrying out:
Said second network operation, administer and maintain machine-processed OAM module and receive the network operation of the Ether frame of customization type, administer and maintain machine-processed OAM management request after; With this network operation, administer and maintain machine-processed OAM management request and be sent to application program module, by said application program module according to network operation, administer and maintain machine-processed OAM management request this optical network unit ONU carried out network operation, administered and maintained machine-processed OAM.
3. according to claim 2ly in GEPON, realize between optical line terminal OLT and the optical network unit ONU method of OAM in the band; It is characterized in that: comprise that also OAM result returns step; Said application program module according to network operation, administer and maintain machine-processed OAM management request this optical network unit ONU carried out OAM after; Said application program module generates OAM result, and this OAM result is back to optical line terminal OLT.
4. according to claim 3ly in GEPON, realize between optical line terminal OLT and the optical network unit ONU method of OAM in the band, it is characterized in that: said OAM result is back to optical line terminal OLT and specifically may further comprise the steps:
The step of on optical network unit ONU, carrying out:
Said application program module generates OAM result; This OAM result is transmitted to said the 2nd OAM module; Said second network operation, administer and maintain machine-processed OAM module and receive network operation, administer and maintain machine-processed OAM management request after, with this network operation, administer and maintain the Ether frame that machine-processed OAM result is assembled into customization type and be sent to first network operation, administer and maintain machine-processed OAM module;
The step of on optical line terminal OLT, carrying out:
Said first network operation, administer and maintain machine-processed OAM module and receive the network operation of the Ether frame of customization type, administer and maintain machine-processed OAM result after, with this network operation, administer and maintain machine-processed OAM result and be sent to said remote supervision module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810039329A CN101610239B (en) | 2008-06-20 | 2008-06-20 | Device and method for realizing in-band OMA between OLT and ONUs in GEPON |
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| US9705625B2 (en) | 2012-02-16 | 2017-07-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical network terminal and a method therein for maintenance of the same |
| CN110224916B (en) * | 2018-03-01 | 2021-10-26 | 中兴通讯股份有限公司 | Message processing method and device and message packaging method, device and system |
| CN113162724A (en) * | 2020-01-23 | 2021-07-23 | 中国移动通信有限公司研究院 | Optical signal transmission method, device and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417982A (en) * | 2001-11-10 | 2003-05-14 | 三星电子株式会社 | Billibit Ethernet passive light network system and medium access control method |
| CN1968089A (en) * | 2006-09-29 | 2007-05-23 | 华为技术有限公司 | Subscriber authentication method for passive optical network |
| CN101141309A (en) * | 2007-10-22 | 2008-03-12 | 中兴通讯股份有限公司 | Remote command line management method of passive optical network terminal |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417982A (en) * | 2001-11-10 | 2003-05-14 | 三星电子株式会社 | Billibit Ethernet passive light network system and medium access control method |
| CN1968089A (en) * | 2006-09-29 | 2007-05-23 | 华为技术有限公司 | Subscriber authentication method for passive optical network |
| CN101141309A (en) * | 2007-10-22 | 2008-03-12 | 中兴通讯股份有限公司 | Remote command line management method of passive optical network terminal |
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Owner name: SHANGHAI FUTURE BROADBAND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI FUTURE BROADBAND TECHNOLOGY AND APPLICATION ENGINEERING RESEARCH CENTER CO., LTD. |
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Denomination of invention: Device and method for realizing in band OAM between optical line terminal OLT and optical network unit ONU in GEPON Effective date of registration: 20220121 Granted publication date: 20121003 Pledgee: Hongkou Branch of Shanghai Rural Commercial Bank Co.,Ltd. Pledgor: SHANGHAI B-STAR TECHNOLOGY CO.,LTD. Registration number: Y2021310000130 |
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Date of cancellation: 20231026 Granted publication date: 20121003 Pledgee: Hongkou Branch of Shanghai Rural Commercial Bank Co.,Ltd. Pledgor: SHANGHAI B-STAR TECHNOLOGY CO.,LTD. Registration number: Y2021310000130 |