CN101635666A - Method and device for communication between optical line terminal and optical network unit of GPON system - Google Patents
Method and device for communication between optical line terminal and optical network unit of GPON system Download PDFInfo
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- CN101635666A CN101635666A CN200810116929A CN200810116929A CN101635666A CN 101635666 A CN101635666 A CN 101635666A CN 200810116929 A CN200810116929 A CN 200810116929A CN 200810116929 A CN200810116929 A CN 200810116929A CN 101635666 A CN101635666 A CN 101635666A
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Abstract
The invention provides a method and a device for communication between an optical line terminal OLT and an optical network unit ONU of a GPON system. When the ONU supports multiple connection modes of a service flow and a GEM Port in the prior GPON system, the OLT does not know to manage the ONU according to what kind of connection mode of the service flow and the GEM Port. The method and the device send the connection modes of the service flow and the GEM Port supported by the ONU and/or the current connection mode of the service flow and the GEM Port of the ONU to the OLT by setting a connection mode module and a sending module in the ONU, and the device negotiates with the OLT so as to confirm the connection mode of the service flow and the GEM Port. Therefore, aiming at any type of ONU and OLT, as long as the ONU and the OLT have the same connection mode, the method and the device can realize the communication between the ONU and the OLT without predefining the connection mode after the ONU is accessed.
Description
Technical field
The present invention relates to a kind of GPON (Gigabit-Capable Passive Optical Network, gigabit passive optical network) system's optical line terminal (Optical Line Terminal, OLT) with optical network unit (Optical Network Unit, means of communication ONU) and device.
Background technology
It is the broadband access network developing direction that industry is generally acknowledged that optical fiber inserts, and PON (Optical PassiveNetwork, EPON) is present main optical fiber access technology.Typical PON system by OLT (Optical Line Terminal, OLT), ODN (Optical Distribution Network, Optical Distribution Network) and ONU (Optical Network Unit, optical network unit) composition.The PON system is generally the topology of point-to-multipoint, and an OLT is connected with a plurality of ONU.ONT (OpticalNetwork Terminal, light network termination device) is a kind of of ONU.
GPON is one of mainstream technology of PON network, is disposed so that broadband services to be provided by worldwide a plurality of operators at present.
According to ITU-T G984 standard-required, user traffic flow enters the GPON system when transmitting between OLT and ONU, need carry out encapsulation/decapsulation according to the GEM frame format of standard, and promptly user traffic flow is transmitted between OLT and ONU as the payload part in the GEM frame.In order to distinguish and identify Business Streams dissimilar in the GEM frame, it is that GEM Port (GEM port) transmits between OLT and ONU by different logical channels that GPON agreement regulation is classified Business Stream back, and it is GEM Port ID that each GEM Port has unique sign.Brought the problem that adopts which kind of pattern to be connected between many Business Streams and a plurality of GEM PORT thus.G.984.4 standard provides the plurality of optional pattern to be used for being connected the management parameters difference under the different mode between OLT and the ONU between Business Stream and the GEM Port.Because OLT and ONU can support wherein any one or various modes, (for example support different connection modes respectively with a plurality of ONU that OLT connects, or wherein some ONU supports multiple connection mode), this has just caused OLT not know this according to which kind of Business Stream and GEM Port connection mode manages ONU.
Summary of the invention
At defective that exists in the prior art and deficiency, the objective of the invention is to propose the means of communication of OLT and ONU in a kind of GPON system, can all support multiple business stream and GEM Port connected mode at OLT and ONU, or wherein a side supports the GPON system of multiple business stream and GEM Port connected mode, and mode is through consultation determined the communication mode between OLT and the ONU.
In order to achieve the above object, the present invention proposes the device of OLT and ONU communication in a kind of GPON system, it is characterized in that, comprising:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with connection mode that this ONU supported and/or current Business Stream and the GEM Port connection mode of storing in the described connection mode module of this ONU.
Preferred as technique scheme, described device also comprises:
Mode selection module, described mode selection module be according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support.
Preferred as technique scheme, described connection mode module is arranged in the described ONU; Described mode selection module is arranged in the described OLT.
Preferred as technique scheme, described connection mode module is arranged in the ONT2-G management entity of described ONU.
Simultaneously, the invention allows for the method for OLT and ONU communication in a kind of GPON system, it is characterized in that, comprising:
Step 1, ONU send to OLT with the Business Stream of its support and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU;
Step 2, according to the connection mode that described ONU supported, and the connection mode supported of described OLT, the connection mode of selecting a kind of ONU and OLT all to support.
Preferred as technique scheme also comprised before step 1:
Step 0, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with the Business Stream that this ONU supported stored in the described connection mode module and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU.
Preferred as technique scheme,, described step 0 is specially:
Step 0a, in ONU, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with the Business Stream that this ONU supported stored in the described connection mode module and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU;
Step 0b, in described OLT, be provided with lower module:
Mode selection module, described mode selection module are according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support also can send to this connection mode this ONU if desired, if do not need then can not send.
Preferred as technique scheme, among the described step 0a, described connection mode module is arranged in the ONT2-G management entity of this ONU.
The present invention proposes the means of communication and the device of a kind of GPON OLT of system and ONU.In the existing GPON system, G.984.4 standard provides the plurality of optional pattern to be used for being connected the management parameters difference under the different mode between OLT and the ONU between Business Stream and the GEMPort.Because OLT and ONU can support wherein any one or various modes, (for example support different connection modes respectively with a plurality of ONU that OLT connects, or wherein some ONU supports multiple connection mode), this has just caused OLT not know this according to which kind of Business Stream and GEM Port connection mode manages ONU.At this problem, the present invention proposes the means of communication and the device of a kind of GPON OLT of system and ONU, consult to determine Business Stream and GEM Port connection mode by ONU and OLT, like this can be at the ONU and the OLT of disposable type, as long as it has identical connection mode, can realize not needing connection mode is carried out the pre-defined communication that just can realize ONU and OLT after ONU inserts.
Description of drawings
Fig. 1 is the principle schematic of device first preferred embodiment of OLT and ONU communication in the GPON system of the present invention's proposition;
Fig. 2 is the principle schematic of device the 3rd preferred embodiment of OLT and ONU communication in the GPON system of the present invention's proposition;
Fig. 3 is the principle schematic of device the 4th preferred embodiment of OLT and ONU communication in the GPON system of the present invention's proposition;
Fig. 4 is the schematic flow sheet of the method for OLT and ONU communication in the GPON system of the present invention's proposition.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.For the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
At first the device in conjunction with OLT and ONU communication in the GPON system of Fig. 1,2,3 pairs of the present invention's propositions describes.
Device first preferred embodiment of OLT and ONU communication comprises as shown in Figure 1 in the GPON system that the present invention proposes:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with the Business Stream that this ONU supported stored in the described connection mode module and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU.
In above-mentioned first preferred embodiment, store all Business Streams that ONU supports and the connection mode of GEM Port in the connection mode module, and/or current Business Stream and the GEMPort connection mode of this ONU.By sending module these patterns are sent to OLT in due course, and, select the pattern of both's support then and carry out communication by comparing the pattern that ONU and OLT support respectively.After selecting connection mode, OLT judges that this connection mode is whether identical with the connection mode that ONU reports, if inequality then this connection mode is sent to the connection mode module, if identical then do not need to send.ONU only need read the connection mode module, just can learn currently should select which kind of connection mode, thereby make ONU and the OLT can communication.That is to say to have three kinds of modes to realize goal of the invention:
A kind of is storage all Business Streams that ONU supported and the connection mode of GEMPort in the connection mode module, and reports OLT by ONU, is selected a kind of connection mode of both's support then by OLT; This pattern is fit to the situation that ONU supports multiple connection mode;
Another kind is current Business Stream and the GEM Port connection mode of storage ONU in the connection mode module, and reports OLT by ONU, so that OLT knows the current connection mode of each ONU; The connection mode that a plurality of ONU that this pattern is suitable for OLT connects support is different, and ONU only supports a kind of connection mode;
Another is storage all Business Streams that ONU supported and the connection mode of GEMPort in the connection mode module, and current Business Stream and the GEM Port connection mode of ONU; The ONU that this pattern is suitable for preceding two kinds of patterns mixes the mode of using.
In device second preferred embodiment of OLT and ONU communication, also comprise mode selection module in the GPON system that the present invention proposes, described mode selection module is according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support.After selecting connection mode, OLT judges that this connection mode is whether identical with the connection mode that ONU reports, if inequality then this connection mode is sent to the connection mode module, if identical then do not need to send.
In the GPON system that the present invention proposes device the 3rd preferred embodiment of OLT and ONU communication as shown in Figure 2, described connection mode module, sending module are arranged in the described ONU; Described mode selection module is arranged in the described OLT.
In the GPON system that the present invention proposes device the 4th preferred embodiment of OLT and ONU communication as shown in Figure 3, the difference of itself and the 3rd preferred embodiment is that described connection mode module is arranged in the ONT2-G management entity of described ONU.Wherein the connection mode module can be divided into concatenation ability module and current connection mode module, one of or both, be used for storing all Business Streams that this ONU supports and connection mode and current Business Stream and the GEMPort connection mode of this ONU of GEM Port respectively.These two modules can be the attribute field of some management entities (Management Entity is hereinafter to be referred as ME), for example attribute field of the ONT2-G management entity in the present embodiment.
Stipulated the ONT2-G management entity in the G984.4 standard, this management entity generates in the ONU power-up initializing automatically, and OLT can be provided with it by the SET order follow-up.
Concrete parameter and the standard of ONT2-G ME, the ITU-TG984.4 agreement that visible in February, 2008, ITU announced.
In the above-described embodiments, the mode that the connection mode that sending module is supported ONU sends to OLT has two kinds, a kind of is initiatively connection mode to be sent to OLT when the ONU power-up initializing, also can be when ONU receives the order of OLT the connection mode that ONU supported to be sent to OLT.
Below in conjunction with Fig. 4 the method for OLT and ONU communication in the GPON system of the present invention's proposition is described.
The fifth preferred embodiment of the invention flow process comprises:
Step 1, ONU send to OLT with the Business Stream of its support and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU;
Step 2, according to the connection mode that described ONU supported, and the connection mode supported of described OLT, the connection mode of selecting a kind of ONU and OLT all to support.
In above-mentioned the 5th preferred embodiment, ONU sends to OLT with the Business Stream of its support and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU.Just as described in the first embodiment, this is for three kinds of patterns at different ONU, does not give unnecessary details one by one at this.Storage all Business Streams that ONU supported and the connection mode of GEMPort in adopting the connection mode module, and when reporting this pattern of OLT by ONU, its concrete steps comprise as shown in Figure 4:
Step a, ONU send to OLT with the Business Stream of its support and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU;
Step b, according to the connection mode that described ONU supported, and the connection mode supported of described OLT, the connection mode of selecting a kind of ONU and OLT all to support;
Step c, OLT send to ONU with the connection mode of selecting.
Wherein among the step c, the mode that OLT sends to ONU has multiple, can be directly to change current Business Stream and the GEM Port connection mode of storing in the connection mode module, can be other modes also, does not give unnecessary details one by one at this.
The sixth preferred embodiment of the invention flow process comprises:
Step 0, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with connection mode that this ONU supported and/or current Business Stream and the GEM Port connection mode of storing in the described connection mode module of this ONU.
In above-mentioned the 5th preferred embodiment, one as the described system of first embodiment at first are set, finish the method for the 5th embodiment then by this system.
The seventh embodiment of the present invention is based on the improvement of the 6th preferred embodiment, comprising:
Preferred as technique scheme,, described step 0 is specially:
Step 0a, in ONU, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with connection mode that this ONU supported and/or current Business Stream and the GEM Port connection mode of storing in the described connection mode module of this ONU;
Step 0b, in described OLT, be provided with lower module:
Mode selection module, described mode selection module be according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support.After selecting connection mode, OLT judges that this connection mode is whether identical with the connection mode that ONU reports, if inequality then this connection mode is sent to the connection mode module, if identical then do not need to send.
As the 8th preferred embodiment of the present invention, the described connection mode module in the 6th above-mentioned embodiment is arranged in the ONT2-G management entity of described ONU.Described as the 4th embodiment, the connection mode module can be divided into concatenation ability module and current connection mode module, one of or both, be used for storing all Business Streams that this ONU supports and connection mode and current Business Stream and the GEM Port connection mode of this ONU of GEM Port respectively.These two modules can be the attribute field of some management entities (Management Entity is hereinafter to be referred as ME), for example attribute field of the ONT2-G management entity in the present embodiment.
In the above-described embodiment, the mode that the connection mode that ONU is supported sends to OLT has two kinds, a kind of is initiatively connection mode to be sent to OLT when the ONU power-up initializing, and another kind is when ONU receives the order of OLT the connection mode that ONU supported to be sent to OLT.
Though; the present invention clearly demonstrates by above embodiment and accompanying drawing thereof; yet under the situation that does not deviate from spirit of the present invention and essence thereof; the person of ordinary skill in the field works as can make various corresponding variations and correction according to the present invention, but these corresponding variations and correction all should belong to the protection range of claim of the present invention.
Claims (10)
1, the device of optical line terminal and optical network unit communication in a kind of GPON system is characterized in that, comprising:
The connection mode module, storing this optical network unit in the described module at least is Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that ONU supports;
Sending module, it is OLT that Business Stream that described sending module is current with the connection mode that this ONU supported stored in the described connection mode module and/or this ONU and GEM Port connection mode send to optical line terminal.
2, the device of optical line terminal and optical network unit communication in the GPON according to claim 1 system is characterized in that, also comprises:
Mode selection module, described mode selection module be according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support.
3, the device of optical line terminal and optical network unit communication in the GPON according to claim 2 system is characterized in that described connection mode module and sending module are arranged in the described ONU; Described mode selection module is arranged in the described OLT.
4, the device of optical line terminal and optical network unit communication in the GPON according to claim 2 system, it is characterized in that, after described mode selection module is selected connection mode, OLT judges that this connection mode is whether identical with the connection mode that ONU reports, if it is inequality then this connection mode is sent to the connection mode module, if identical then do not send.
5, the device of optical line terminal and optical network unit communication in the GPON according to claim 3 system is characterized in that described connection mode module is arranged in the ONT2-G management entity of described ONU.
6, the method for optical line terminal and optical network unit communication in a kind of GPON system is characterized in that, comprising:
It is OLT that step 1, optical network unit Business Stream that to be ONU current with the Business Stream of its support and GEM Port connection mode and/or this ONU and GEM Port connection mode send to optical line terminal;
Step 2, according to Business Stream and GEM Port connection mode that described ONU supported, and the connection mode supported of described OLT, the connection mode of selecting a kind of ONU and OLT all to support.
7, the method for optical line terminal and optical network unit communication in the GPON according to claim 6 system is characterized in that, also comprises before step 1:
Step 0, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with connection mode that this ONU supported and/or current Business Stream and the GEM Port connection mode of storing in the described connection mode module of this ONU.
8, the method for optical line terminal and optical network unit communication in the GPON according to claim 7 system is characterized in that described step 0 is specially:
Step 0a, in ONU, be provided with lower module:
The connection mode module, the Business Stream and GEM Port connection mode and/or current Business Stream and the GEM Port connection mode of this ONU that store this ONU at least in the described module and supported;
Sending module, described sending module sends to OLT with connection mode that this ONU supported and/or current Business Stream and the GEM Port connection mode of storing in the described connection mode module of this ONU;
Step 0b, in described OLT, be provided with lower module:
Mode selection module, described mode selection module be according to the connection mode that described ONU and OLT supported, the connection mode of selecting a kind of ONU and OLT all to support.
9, the method for optical line terminal and optical network unit communication in the GPON according to claim 8 system is characterized in that among the described step 0a, described connection mode module is arranged in the ONT2-G management entity of this ONU.
10, the method for optical line terminal and optical network unit communication in the GPON according to claim 8 system is characterized in that described method also comprises:
Step 3, after mode selection module is selected connection mode, OLT judges that this connection mode is whether identical with the connection mode that ONU reports, if inequality then this connection mode is sent to the connection mode module, if identical then step finishes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102291246A (en) * | 2010-06-21 | 2011-12-21 | 中兴通讯股份有限公司 | Selection method and system of optical network unit (ONU) management maintenance mode |
| CN104125099A (en) * | 2014-08-06 | 2014-10-29 | 上海斐讯数据通信技术有限公司 | EPON (Ethernet passive optical network) system remote configuration management method |
| CN105122759A (en) * | 2013-12-12 | 2015-12-02 | 华为技术有限公司 | Method for processing packet in access network, and network device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101079801A (en) * | 2006-05-25 | 2007-11-28 | 华为技术有限公司 | Method for transmitting uplink control packet in Gbit passive optical network system |
| CN101005445B (en) * | 2006-01-18 | 2012-08-15 | 华为技术有限公司 | Method for mapping service flow to service transmission path and optical network terminal |
| CN101202588A (en) * | 2006-12-14 | 2008-06-18 | 中兴通讯股份有限公司 | Service management system of GigaBit passive optical network |
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2008
- 2008-07-21 CN CN200810116929.5A patent/CN101635666B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102291246A (en) * | 2010-06-21 | 2011-12-21 | 中兴通讯股份有限公司 | Selection method and system of optical network unit (ONU) management maintenance mode |
| WO2011160382A1 (en) * | 2010-06-21 | 2011-12-29 | 中兴通讯股份有限公司 | Method and system for selecting optical network unit management and maintenance manner |
| CN105122759A (en) * | 2013-12-12 | 2015-12-02 | 华为技术有限公司 | Method for processing packet in access network, and network device |
| CN105122759B (en) * | 2013-12-12 | 2018-08-14 | 华为技术有限公司 | A kind of method and the network equipment accessing Message processing in net |
| US10523562B2 (en) | 2013-12-12 | 2019-12-31 | Huawei Technologies Co., Ltd. | Method for processing packet in access network and network device |
| CN104125099A (en) * | 2014-08-06 | 2014-10-29 | 上海斐讯数据通信技术有限公司 | EPON (Ethernet passive optical network) system remote configuration management method |
| CN104125099B (en) * | 2014-08-06 | 2019-10-11 | 上海斐讯数据通信技术有限公司 | A kind of EPON system Remote configuration management method |
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