CN103957475A - Networking system allowing GPON and XG-PON to be concomitant and application - Google Patents
Networking system allowing GPON and XG-PON to be concomitant and application Download PDFInfo
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- CN103957475A CN103957475A CN201410145124.9A CN201410145124A CN103957475A CN 103957475 A CN103957475 A CN 103957475A CN 201410145124 A CN201410145124 A CN 201410145124A CN 103957475 A CN103957475 A CN 103957475A
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Abstract
The invention provides a networking system allowing a GPON and an XG-PON to be concomitant and an application, and relates to the field of optical access networks in optical fiber communication. The networking system comprises a GPON OLT system and an XG-PON OLT system, wherein a plurality of ONUs are connected to an optical branching device in an ODN through branch optical fibers. The networking system further comprises a concomitant optical module comprising a WDM device, a GPON OLT optical/electric assembly and an XG-PON OLT optical/electric assembly, the GPON OLT optical/electric assembly achieves bi-directional signal transmission between the GPON OLT system side and the WDM device, the XG-PON OLT optical/electric assembly achieves bi-directional signal transmission between the XG-PON OLT system side and the WDM device, and the WDM device is used for wave combination and partition of GPON optical signals and XG-PON optical signals. The networking system allows the GPON and the XG-PON to be concomitant, maintaining workloads and manpower cost are not increased, and the networking system is economical and practical.
Description
Technical field
The present invention relates to the optical access network field in optical fiber communication, is specifically group network system and application that a kind of GPON and XG-PON coexist.
Background technology
At present, GPON system group network block diagram as shown in Figure 1, its ODN has comprised from OLT optical interface to all fiber optic networks ONU optical interface, it is mainly by the OLT(Optical Line Termination of local side, optical line terminal), the ONT/ONU(Optical Network Unit of user side, optical network unit) and the ODN that connects these two kinds of equipment form, wherein ODN comprises circuit optical fiber and optical branching device (Splitter).GPON system is single fiber bi-directional system, and uplink and downlink should be used respectively different wavelength, and the centre wavelength of down going channel is 1490nm, and wave-length coverage is 1480nm～1500nm; The centre wavelength of data feedback channel is 1310nm, and wave-length coverage is 1290～1330nm, its single GPON system maximum can access light that 128 GPON ONU equipment provide maximum 1:128 along separate routes than.
Because GPON equipment is used in a large number in existing network, when XG-PON equipment also will add existing network, GPON be reached with XG-PON coexists, the problem of the ODN transition that the ODN that GPON is only carried in solution with regard to needs coexists to GPON and XG-PON.Such as, while needing newly-increased XG-PON user in the ODN that opens GPON user, conventional method is exactly in OLT side, between OLT optical interface and ODN, increase a WDM device (Wavelength Division Multiplexing Module, wavelength division multiplex device), then be connected to XG-PON, with this, complete transition from GPON to XG-PON and upgrading.
But in above-mentioned transition and during upgrading, OLT side in existing GPON system ODN, need to increase a WDM device and XG-PON optical module, this part module increasing will be inserted in the ODN of former GPON by force, must change the composition of former ODN and framework, and this change will certainly increase O&M workload and cost of labor, there is drawback in the form that therefore existing GPON and XG-PON coexist, economical and practical not.
Summary of the invention
For the defect existing in prior art, the group network system and the application that the object of the present invention is to provide a kind of GPON and XG-PON to coexist, can be in the situation that not transforming ODN, realizes GPON and XG-PON coexists, and do not increase O&M workload and cost of labor, economical and practical.
For reaching above object, the group network system that the present invention takes a kind of GPON and XG-PON to coexist, the GPON OLT system and the XG-PON OLT system that comprise OLT side, and a plurality of ONU of ODN and user's side, described ONU is connected to respectively the optical branching device of ODN inside by branch optical fiber, also comprise the formula that a coexists optical module being connected with optical branching device, the described formula optical module that coexists comprises a WDM device, GPON OLT light/electric assembly and XG-PON OLT light/electric assembly, described GPON OLT light/electric assembly transmits for the two-way signaling of realizing between GPON OLT system side and WDM device, XG-PON OLT light/electric assembly transmits for the two-way signaling of realizing between XG-PON OLT system side and WDM device, described WDM device is connected with optical branching device by the mode of single fiber bi-directional, for GPON and XG-PON light signal, close ripple and partial wave.
On the basis of technique scheme, the electrical interface side of described GPON OLT light/electric assembly and GPON OLT system realize the two-way signal of telecommunication and transmit; The optical interface side of GPON OLT light/electric assembly and WDM device are realized the bidirectional transmit-receive of GPON light signal.
On the basis of technique scheme, the electrical interface side of described XG-PON OLT light/electric assembly and XG-PON OLT system realize the two-way signal of telecommunication and transmit; The optical interface side of XG-PON OLT light/electric assembly and WDM device are realized the bidirectional transmit-receive of XG-PON light signal.
On the basis of technique scheme, described in the WDM device that coexists in formula optical module ODN is only used to an optical interface, to GPON system and XG-PON system, the high-speed differential signal line by is separately connected respectively.
On the basis of technique scheme, described in the coexist structure of formula optical module and the XFP standard that optic electric interface form all adopts standard encapsulate.
On the basis of technique scheme, described ONU comprises a plurality of GPON ONU and a plurality of XG-PON ONU.
The present invention also provides the application of the group network system that a kind of GPON and XG-PON coexist: down direction, described coexisting in formula optical module, GPON OLT light/electric assembly receives the downstream signal from GPON system, XG-PON OLT light/electric assembly receives the downstream signal from XG-PON system, by described WDM device, close after ripple, by simple optical fiber, be sent to optical branching device again, through branch optical fiber, arrive each self-corresponding ONU; Up direction, each ONU sends upward signal after optical branching device, through an optical fiber transmission to WDM device partial wave, the light signal of isolated 2 road different wave lengths, be sent to respectively GPON OLT light/electric assembly and XG-PON OLT light/electric assembly, and then be sent to GPON system and XG-PON system.
On the basis of technique scheme, described down direction, the downlink optical signal of GPON OLT light/electric assembly is 1480nm～1500nm, the downlink optical signal of XG-PON OLT light/electric assembly is 1575nm～1581nm.
On the basis of technique scheme, described ONU comprises a plurality of GPON ONU and a plurality of XG-PON ONU, up direction, and each GPON ONU sends the light signal of 1290nm～1330nm; Each XG-PON ONU sends the light signal of 1260nm～1280nm.
Beneficial effect of the present invention is: described GPON OLT light/electric assembly, XG-PON OLT light/electric assembly and the merging of WDM device are encapsulated into one and coexist in formula optical module, the ODN of GPON system is not subject to the impact of XG-PON system at all, realized GPON and XG-PON coexists, user can implement according to concrete selection, needn't change the ODN in GPON system, do not increase O&M workload and cost of labor, economical and practical.
Accompanying drawing explanation
Fig. 1 is GPON system group network block diagram in background technology;
Fig. 2 is the group network system schematic diagram that GPON of the present invention and XG-PON coexist;
Fig. 3 is the structural representation of formula optical module of coexisting in Fig. 2.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figures 2 and 3, the group network system that GPON of the present invention and XG-PON coexist, comprises GPON OLT system, the XG-PON OLT system of OLT side and the formula optical module that coexists, and a plurality of ONU of ODN and user's side; Described ODN comprises an optical branching device, and a plurality of ONU are divided into GPON ONU and XG-PON ONU; The described formula optical module that coexists comprises a WDM device, GPON OLT light/electric assembly and XG-PON OLT light/electric assembly.
Described GPON OLT light/electric assembly transmits for the two-way signaling of realizing between GPON OLT system side and WDM device; The electrical interface side of GPON OLT light/electric assembly and GPON OLT system realize the two-way signal of telecommunication and transmit, and optical interface side and WDM device are realized the bidirectional transmit-receive of GPON light signal.Described XG-PON OLT light/electric assembly transmits for the two-way signaling of realizing between XG-PON OLT system side and WDM device; The electrical interface side of XG-PON OLT light/electric assembly and XG-PON OLT system realize the two-way signal of telecommunication and transmit, and the optical interface side of XG-PON OLT light/electric assembly and WDM device are realized the bidirectional transmit-receive of XG-PON light signal.Described WDM device closes ripple and partial wave for GPON and XG-PON light signal, its objective is in order to allow the formula optical module that coexists export external optical interface in the mode of single fiber bi-directional, therefore the WDM device coexisting in formula optical module described in is only used an optical interface to ODN, and to GPON system and XG-PON system, the high-speed differential signal line by is separately connected respectively.The structure of the formula that coexists optical module and optic electric interface form all adopt the XFP standard of standard to encapsulate, can be compatible with XG-PON system easily.Described WDM device is connected with the optical branching device in described ODN by a trunk optical fiber, and described optical branching device is connected with a plurality of ONU of user's side respectively by branch optical fiber.
As shown in Figures 2 and 3, the application of the group network system that GPON of the present invention and XG-PON coexist, comprising:
Down direction, GPON system is sent to downlink electrical signal the GPON OLT light/electric assembly coexisting in formula optical module; Described GPON OLT light/electric assembly is converted to this signal of telecommunication the downlink optical signal of 1480nm～1500nm, is sent to described WDM device.XG-PON OLT system is sent to downlink electrical signal the XG-PON OLT light/electric assembly coexisting in formula optical module equally; Described XG-PON OLT light/electric assembly is converted to this signal of telecommunication the downlink optical signal of 1575nm～1581nm, is sent to described WDM device.Described WDM device closes after ripple the downlink optical signal receiving, then is sent to optical branching device by trunk optical fiber, and optical branching device carries out light splitting to it, and is sent to each self-corresponding ONU by every branch optical fiber.
Up direction, each ONU sends uplink optical signal by branch optical fiber to optical branching device, and wherein, each GPON ONU sends the light signal of 1290nm～1330nm; Each XG-PON ONU sends the light signal of 1260nm～1280nm.Optical branching device is sent to described uplink optical signal the WDM device coexisting in formula optical module by trunk optical fiber, described WDM device carries out partial wave to the light signal receiving, isolate the light signal of 2 road different wave lengths, the light signal of 1290nm～1330nm is sent to GPON OLT light/electric assembly, the light signal of 1260nm～1280nm is sent to XG-PON OLT light/electric assembly, and then change again the signal of telecommunication into, be sent to respectively GPON system and XG-PON system.
The present invention is not limited to above-mentioned execution mode, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, within these improvements and modifications are also considered as protection scope of the present invention.The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. the group network system that a GPON and XG-PON coexist, the GPON OLT system and the XG-PON OLT system that comprise OLT side, and a plurality of ONU of ODN and user's side, described ONU is connected to respectively the optical branching device of ODN inside by branch optical fiber, it is characterized in that: also comprise the formula that a coexists optical module being connected with optical branching device, the described formula optical module that coexists comprises a WDM device, GPON OLT light/electric assembly and XG-PON OLT light/electric assembly, described GPON OLT light/electric assembly transmits for the two-way signaling of realizing between GPON OLT system side and WDM device, XG-PON OLT light/electric assembly transmits for the two-way signaling of realizing between XG-PON OLT system side and WDM device, described WDM device is connected with optical branching device by the mode of single fiber bi-directional, for GPON and XG-PON light signal, close ripple and partial wave.
2. the group network system that GPON as claimed in claim 1 and XG-PON coexist, is characterized in that: the electrical interface side of described GPON OLT light/electric assembly and GPON OLT system realize the two-way signal of telecommunication and transmit; The optical interface side of GPON OLT light/electric assembly and WDM device are realized the bidirectional transmit-receive of GPON light signal.
3. the group network system that GPON as claimed in claim 1 and XG-PON coexist, is characterized in that: the electrical interface side of described XG-PON OLT light/electric assembly and XG-PON OLT system realize the two-way signal of telecommunication and transmit; The optical interface side of XG-PON OLT light/electric assembly and WDM device are realized the bidirectional transmit-receive of XG-PON light signal.
4. the group network system that GPON as claimed in claim 1 and XG-PON coexist, it is characterized in that: described in the WDM device that coexists in formula optical module ODN is only used to an optical interface, to GPON system and XG-PON system, the high-speed differential signal line by is separately connected respectively.
5. the group network system that GPON as claimed in claim 1 and XG-PON coexist, is characterized in that: described in the coexist structure of formula optical module and the XFP standard that optic electric interface form all adopts standard encapsulate.
6. the group network system that GPON as claimed in claim 1 and XG-PON coexist, is characterized in that: described ONU comprises a plurality of GPON ONU and a plurality of XG-PON ONU.
7. an application for the group network system coexisting based on GPON described in claim 1 and XG-PON, is characterized in that:
Down direction, described coexisting in formula optical module, GPON OLT light/electric assembly receives the downstream signal from GPON system, XG-PON OLT light/electric assembly receives the downstream signal from XG-PON system, by described WDM device, close after ripple, by simple optical fiber, be sent to optical branching device again, through branch optical fiber, arrive each self-corresponding ONU;
Up direction, each ONU sends upward signal after optical branching device, through an optical fiber transmission to WDM device partial wave, the light signal of isolated 2 road different wave lengths, be sent to respectively GPON OLT light/electric assembly and XG-PON OLT light/electric assembly, and then be sent to GPON system and XG-PON system.
8. the application of the group network system that GPON as claimed in claim 7 and XG-PON coexist, it is characterized in that: described down direction, the downlink optical signal of GPON OLT light/electric assembly is 1480nm～1500nm, and the downlink optical signal of XG-PON OLT light/electric assembly is 1575nm～1581nm.
9. the application of the group network system that GPON as claimed in claim 7 and XG-PON coexist, is characterized in that: described ONU comprises a plurality of GPON ONU and a plurality of XG-PON ONU, up direction, and each GPON ONU sends the light signal of 1290nm～1330nm; Each XG-PON ONU sends the light signal of 1260nm～1280nm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145124.9A CN103957475A (en) | 2014-04-11 | 2014-04-11 | Networking system allowing GPON and XG-PON to be concomitant and application |
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| CN201410145124.9A CN103957475A (en) | 2014-04-11 | 2014-04-11 | Networking system allowing GPON and XG-PON to be concomitant and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105812964A (en) * | 2015-11-10 | 2016-07-27 | 深圳极智联合科技股份有限公司 | Method for sharing BOSA by PON terminal devices, and PON system |
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| CN101877798A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Coexistence system of existing passive optical network and next generation passive optical network and updating method |
| CN103051984A (en) * | 2011-10-14 | 2013-04-17 | 中兴通讯股份有限公司 | Method and device for transmitting optical signal |
| CN103546834A (en) * | 2013-10-31 | 2014-01-29 | 烽火通信科技股份有限公司 | System and method for achieving coexistence between XG-PONs and GPONs in ODNs |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100239255A1 (en) * | 2009-03-18 | 2010-09-23 | Hiroki Ikeda | Optical line terminal, passive optical network system, and bandwidth assignment method |
| CN101877798A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Coexistence system of existing passive optical network and next generation passive optical network and updating method |
| CN103051984A (en) * | 2011-10-14 | 2013-04-17 | 中兴通讯股份有限公司 | Method and device for transmitting optical signal |
| CN103546834A (en) * | 2013-10-31 | 2014-01-29 | 烽火通信科技股份有限公司 | System and method for achieving coexistence between XG-PONs and GPONs in ODNs |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105812964A (en) * | 2015-11-10 | 2016-07-27 | 深圳极智联合科技股份有限公司 | Method for sharing BOSA by PON terminal devices, and PON system |
| CN105812964B (en) * | 2015-11-10 | 2019-02-19 | 浙江极智通信科技股份有限公司 | The sharing method and PON system of PON terminal device BOSA |
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Inventor after: Cao Hua Inventor after: Xiang Dong Inventor after: Du Zhe Inventor after: Zeng Tao Inventor before: Cao Hua Inventor before: Xiang Dong |
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Application publication date: 20140730 |
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