CN105763963A - Service transmission method and device - Google Patents
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- CN105763963A CN105763963A CN201410797455.0A CN201410797455A CN105763963A CN 105763963 A CN105763963 A CN 105763963A CN 201410797455 A CN201410797455 A CN 201410797455A CN 105763963 A CN105763963 A CN 105763963A
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- H—ELECTRICITY
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Abstract
The invention discloses a service transmission method and device. The service transmission method is applied to a P2P type ONU accessed by an NG-PON2. The method includes detecting the rate of an ONU access service; determining the number of uplink wavelength required by the service according to the service rate and the maximum carrying rate when the service rate is greater than the maximum carrying rate of one uplink wavelength in the NG-PON2, wherein the number is greater than or equal to 2; sending the service to the OLT by adopting the uplink wavelengths of the said number. The service transmission method can realize using the NG-PON2 technology for carrying CPRI (Common Public Radio Interface) service.
Description
Technical field
The present invention relates to technical field of photo communication, especially one business transmitting method and device.
Background technology
Development along with network technology, it is possible to use the business such as network transmission substantial amounts of voice, data, video, therefore improves constantly the requirement of bandwidth, and EPON (PON) is exactly produce under this demand.The topological structure of PON system is as shown in Figure 1, PON system is generally made up of the optical line terminal (OLT) of office side, the optical network unit (ONU) of user side and Optical Distribution Network (ODN), generally adopts point-to-multipoint network structure.
On basis based on tradition PON structure, NG-PON2 adopts multiple wave stack technology, and namely a NG-PON2 physical interface of OLT is formed (namely multiple wavelength form, λ 1-λ 4) by organizing wavelength more, as shown in Figure 2.In NG-PON2, one group of wavelength includes the operation wavelength (upstream wavelength, λ u) of up direction and the operation wavelength (downstream wavelength, λ d) of corresponding down direction；After the operation wavelength of down direction is selected, one or more operation wavelengths of corresponding up direction also can determine whether with it, and after the operation wavelength of same up direction is selected, then the operation wavelength of corresponding down direction is it is also determined that get off.Some wavelength of up direction by multiple ONU time division multiplexes, also can be monopolized by certain ONU.Certain wavelength exclusive or multiple ONU, be commonly referred to as P2P type ONU.
The wavelength of different groups, is generally respectively intended to the business that carrying is different, it is possible to by certain multiplex mode, carry identical business.
Existing CPRI (CommonPublicRadioInterface, the common public radio interface) passage for carrying 4G business, total following 8 groups of rate type:
CPRIlinebitrateoption1:614.4Mbit/s,8B/10Blinecoding(1x491.52x10/8Mbit/s)
CPRIlinebitrateoption2:1228.8Mbit/s,8B/10Blinecoding(2 x491.52x10/8Mbit/s)
CPRIlinebitrateoption3:2457.6Mbit/s,8B/10Blinecoding(4x491.52x10/8Mbit/s)
CPRIlinebitrateoption4:3072.0Mbit/s,8B/10Blinecoding(5x491.52x10/8Mbit/s)
CPRIlinebitrateoption5:4915.2Mbit/s,8B/10Blinecoding(8x491.52x10/8Mbit/s)
CPRIlinebitrateoption6:6144.0Mbit/s,8B/10Blinecoding(10x491.52x10/8Mbit/s)
CPRIlinebitrateoption7:9830.4Mbit/s,8B/10Blinecoding(16x491.52x10/8Mbit/s)
CPRIlinebitrateoption8:10137.6Mbit/s,64B/66Blinecoding(20x491.52x66/64Mbit/s)。
It can be seen that wherein the unidirectional speed of option8 type is 10.1376Gbit/s, more than the maximum unidirectional bearer rate 10Gbit/s of upstream wavelength in NG-PON2 one group of wavelength, therefore cannot realize at present carrying CPRI business by the NG-PON2 P2P type ONU accessed.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of business transmitting method and device, it is possible to solve the technical problem that cannot realize being carried CPRI business by the NG-PON2 P2P type ONU accessed at present.
For solving above-mentioned technical problem, the present invention provides a kind of business transmitting method, is applied to the NG-PON2 P2P type ONU accessed, comprises the steps:
The speed of the business that detection ONU accesses；
When the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, determining according to the speed of described business and described maximum bearer rate and carry the quantity of upstream wavelength needed for described business, described quantity is more than or equal to 2；
Described business is sent to OLT by the upstream wavelength adopting described quantity.
Further, the described speed according to described business and described maximum bearer rate determine that carrying the step of the quantity of upstream wavelength needed for described business includes:
Speed according to described business and described maximum bearer rate are determined and are carried the minimum number of upstream wavelength needed for described business.
Further, the step that described business is sent to OLT is included by the upstream wavelength of the described quantity of described employing:
The upstream wavelength of selected described quantity；
By the subservice that described delineation of activities is described quantity；
Described subservice is identified, and is sent to OLT by a selected upstream wavelength.
Further, described business includes: CPRI business.
Further, described method also includes: receives the OLT business datum sent by the downstream wavelength of described quantity, then the business datum received is recovered.
Further, described method also includes: when the maximum bearer rate of a upstream wavelength during the speed of described business is less than or equal to NG-PON2, adopt a upstream wavelength that described business is sent to OLT.
It is similarly the above-mentioned technical problem of solution, present invention also offers a kind of service transmission device, be applied to the NG-PON2 P2P type ONU accessed, including: detection module, Service Processing Module and business sending module:
Described detection module, for detecting the speed of the ONU business accessed；
Described Service Processing Module, for when the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, speed according to described business and described maximum bearer rate are determined and are carried the quantity of upstream wavelength needed for described business, and described quantity is more than or equal to 2；
Described business sending module, for adopting the upstream wavelength of described quantity that described business is sent to OLT.
Further, described Service Processing Module, carry the minimum number of upstream wavelength needed for described business for determining according to the speed of described business and described maximum bearer rate.
Further, described sending module, it is used for:
The upstream wavelength of selected described quantity；
By the subservice that described delineation of activities is described quantity；
Described subservice is identified, and is sent to OLT by a selected upstream wavelength.
Further, described business sending module, be additionally operable to the speed in described business less than or equal to NG-PON2 in the maximum bearer rate of a upstream wavelength, adopt a upstream wavelength that described business is sent to described OLT.
The invention has the beneficial effects as follows:
The invention provides a kind of business transmitting method and device, it is possible to achieve use NG-PON2 technology carrying CPRI business；Business transmitting method provided by the invention, is applied to the NG-PON2 P2P type ONU accessed, including: the speed of the business that detection ONU accesses；When the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, determining according to the speed of described business and described maximum bearer rate and carry the quantity of upstream wavelength needed for described business, described quantity is more than or equal to 2；Described business is sent to OLT by the upstream wavelength adopting described quantity；Speed can be sent to OLT more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2 by wavelength multiplexing mode by the business transmitting method of the present invention, namely adopts multiple upstream wavelength that more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2, speed is sent to OLT；Such as when business is CPRIoption8 type service, the method for the present invention can adopt multiple upstream wavelength that this business is sent to OLT, it is achieved that carries CPRI business by the NG-PON2 P2P type ONU accessed.
Accompanying drawing explanation
Fig. 1 is a kind of PON structural representation；
Fig. 2 is a kind of NG-PON2 schematic network structure；
The schematic flow sheet of a kind of business transmitting method that Fig. 3 provides for the embodiment of the present invention one；
Fig. 4 sends the schematic flow sheet of process for a kind of business that the embodiment of the present invention one provides；
The structural representation of a kind of service transmission device that Fig. 5 provides for the embodiment of the present invention two；
A kind of ONU structural representation that Fig. 6 provides for the embodiment of the present invention three.
Detailed description of the invention
The present invention is described in further detail in conjunction with accompanying drawing below by detailed description of the invention.
Embodiment one:
Consider that the CPRIoption8 type Rate existed in prior art cannot realize by the NG-PON2 P2P type ONU accessed carrying CPRI traffic issues more than what in NG-PON2 upstream wavelength bearer rate caused, as shown in Figure 3, present embodiments provide a kind of business transmitting method, it is applied to the NG-PON2 P2P type ONU accessed, comprises the steps:
Step 301: the speed of the business that detection ONU accesses.
ONU is typically via uni interface module access service, so can detect uni interface speed here.
Step 302: when the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, speed according to described business and described maximum bearer rate are determined and are carried the quantity of upstream wavelength needed for described business, and described quantity is more than or equal to 2.
This step determines that the process of upstream wavelength quantity, such as when business is CPRIoption8 type service, its speed is 10.1376Gbit/s, and the maximum bearer rate of a upstream wavelength is 10Gbit/s according in the speed of business and NG-PON2, now may determine that the quantity of upstream wavelength is 2 or more than 2 needed for carrying CPRIoption8 type service, because the maximum bearer rate sum of the upstream wavelength of 2 or more than 2 is greater than 10.1376Gbit/s, meet the rate requirement of business.
Consider to save upstream wavelength resource, it may be preferable that this step can be determined according to the speed of described business and described maximum bearer rate and carries the minimum number of upstream wavelength needed for described business.Such as, when business is CPRIoption8 type service, may determine that the quantity of upstream wavelength is 2 or more than 2, and minimum number is 2, this sample embodiment method just can use two groups of wavelength resources can meet carrying one road CPRI data service and P2P channel management business in uplink and downlink direction.
Step 303: adopt the upstream wavelength of described quantity that described business is sent to OLT.
Speed can be sent to OLT more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2 by upstream wavelength multiplex mode by the present embodiment business transmitting method, namely adopts multiple upstream wavelength that more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2, speed is sent to OLT；Such as when business is CPRIoption8 type service, the method for the present invention can adopt multiple upstream wavelength that this business is sent to OLT, it is achieved that carries CPRI business by the NG-PON2 P2P type ONU accessed.
Above-mentioned steps 303 is the process of transmission business, specifically may include that
Step 401: the upstream wavelength of selected described quantity.
After quantification, it is necessary to the upstream wavelength of selected quantification, select the upstream wavelength of free time here mainly by the mark of upstream wavelength.Such as when quantification is after 2, ONU can choose two idle upstream wavelengths in order to carry business from numerous upstream wavelengths.The executive agent of this step can be the management object module in ONU, management object module, is responsible for the management function of whole P2P type ONU, and controls the communication between OLT.
Step 402: by the subservice that described delineation of activities is described quantity.
Owing to the present embodiment is to adopt multiple upstream wavelengths one business of carrying, so needing business is divided, being divided into the subservice of respective amount, then subservice being all sent to PLT, namely completes the transmission of business.
The present embodiment neutron number of services is equal with the upstream wavelength quantity needed for carrying business upstream wavelength, for instance when upstream wavelength quantity is 2, it is possible to be two subservices by delineation of activities.
Step 403: described subservice is identified, and it is sent to OLT by a selected upstream wavelength.
In order to make OLT end can recover original service, in addition it is also necessary to each subservice is identified, so after OLT receives subservice, it is possible to become original business according to the identification recovery of subservice.
In actual applications, at ONU up direction, the business that uni interface module can be received, namely the business that ONU accesses, it is divided into the subservice equal with upstream wavelength quantity, then with management object module, each subservice being produced corresponding management signal assemble is PWE3 business packet, there is PWlabel in front in PWE3 business packet, for identification service bag.Wherein management signal includes management object module assignment and identify to the wavelength of this subservice, when business sends, it is possible to according to the upstream wavelength of wavelength mark employing correspondence, business packet is sent to OLT, for instance by the HASH Algorithm mapping wavelength channel to correspondence.
Support that the OLT of NG-PON2 is after PON mouth receives the business of multichannel upstream wavelength, according to normal treatment principle, one or more groups business is independently processed, wavelength channel upper connective plate is given by OLT switching network, wavelength channel upper connective plate, by internal rate adaptation service emulation module, sorts according to the PWlabel of PWE3 and recovers service signal (such as CPRI signal) and give NNI interface.
In NG-PON2, after the operation wavelength of up direction is determined, the operation wavelength of corresponding down direction also can determine whether down with it, therefore, multiple upstream wavelengths are adopted to send uplink service at up direction ONU, multiple upstream wavelength can be adopted too to send downlink business at down direction OLT, and downstream wavelength quantity is identical with upstream wavelength quantity.So, the business transmitting method of the present embodiment, it is also possible to include the process that downlink data is processed, specifically include:
Receive the OLT business datum sent by the downstream wavelength of described quantity, then the business datum received is recovered.
Same so that ONU can accurately recover business, generally understand identification service at OLT end, so original service data can be gone out according to the identification recovery receiving business packet at this end of ONU.Such as, when OLT sends business datum by PWE3 business packet mode, in like manner, business recovery can be carried out according to the PWLabel of business packet at this end of ONU.
Above-mentioned main introduction is the concrete processing procedure when the maximum bearer rate of a upstream wavelength during the speed of business is more than NG-PON2, on said method basis, in the speed of described business is less than or equal to NG-PON2 in the maximum bearer rate situation of a upstream wavelength, the present embodiment business transmitting method can adopt a upstream wavelength that described business is sent to OLT.
For CPRI business, when the ONU business accessed is CPRIoption1-7 type service, owing to service rate is less than the maximum bearer rate of a upstream wavelength, a upstream wavelength carrying business now only need to be adopted to get final product the downstream transmission of finishing service.
And when the ONU business accessed is CPRIoption8 type service, owing to business speed is more than a maximum carrying velocity of variation of upstream wavelength, now it is accomplished by the downstream transmission determining multiple upstream wavelength to carry business finishing service, here preferential two groups of upstream wavelengths.
The present embodiment method overcomes the CPRIoption8 type Rate existed in prior art more than the problem of in NG-PON2 upstream wavelength bearer rate, there is provided a kind of mode by using multiple upstream wavelength multiplexing, thus realizing using NG-PON2 technology carrying CPRIoption8 type service.
Embodiment two:
Present embodiments provide a kind of service transmission device, be applied to the NG-PON2 P2P type ONU accessed, as it is shown in figure 5, include: detection module 501, Service Processing Module 502 and business sending module 503；
Described detection module 501, for detecting the speed of the ONU business accessed；
Described Service Processing Module 502, for when the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, speed according to described business and described maximum bearer rate are determined and are carried the quantity of upstream wavelength needed for described business, and described quantity is more than or equal to 2；
Described business sending module 503, for adopting the upstream wavelength of described quantity that described business is sent to OLT.
Speed can be sent to OLT more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2 by upstream wavelength multiplex mode by the service transmission device of the present invention, namely adopts multiple upstream wavelength that more than the business of the maximum carrying industry speed of upstream wavelength in NG-PON2, speed is sent to OLT；Such as when business is CPRIoption8 type service, assembly of the invention can adopt multiple upstream wavelength that this business is sent to OLT, it is achieved that carries CPRI business by the NG-PON2 P2P type ONU accessed.
Preferentially, described Service Processing Module 502, carry the minimum number of upstream wavelength needed for described business for determining according to the speed of described business and described maximum bearer rate.
Preferentially, described sending module 503, it is used for:
The upstream wavelength of selected described quantity；
By the subservice that described delineation of activities is described quantity；
Described subservice is identified, and is sent to OLT by a selected upstream wavelength.
Preferentially, described business sending module 503, be additionally operable to the speed in described business less than or equal to NG-PON2 in the maximum bearer rate of a upstream wavelength, adopt a upstream wavelength that described business is sent to described OLT.
Embodiment three:
The present embodiment specifically introduces the business transmitting method concrete application in P2P type ONU, as shown in Figure 6, and including:
Uni interface module 601, Service Processing Module 602, management object module 603, TurningLaser (variable wavelength laser) 605, rate adaptation and business simulating module 603, ONU find process module 606.
Each functions of modules and mutual relation are as follows:
Uni interface module 601, is used for accessing CPRI business (refering in particular to access CPRIoption8 type service in the present embodiment).
Service Processing Module 602, carries out Business Processing to CPRI business, same as the prior art.The wherein newly-increased submodule E module of this inside modules, i.e. rate adaptation and business simulating module.The Core Feature of this submodule is described in detail below
Management object module 604, is responsible for the management function of whole P2P type ONU, the speed of monitoring A module, decides whether enable E functions of modules and determine the operational module of D-module；By monitoring the rate mode of A module, 1) decide whether to enable E functions of modules；2) operational module of D-module is determined.
TurningLaser605, is responsible for the operation wavelength with OLT adaptive (adaptive mode can be determined, it is also possible to is consulted to decide by OLT and ONU) by OLT transmitting order to lower levels, and major part is same as the prior art.What's new is: this module acquiescence is operated in one group of wavelength state with OLT, it is also possible under the configuration of management object module 604, be operated in wavelength state two groups non-interference with OLT simultaneously.
Rate adaptation and business simulating module 603, this module is the nucleus module of the present invention, and major function is:
Detection uni interface speed, acquiescence uses the maximum rate adaptation uni interface speed of a upstream wavelength, it is possible under the configuration of management object module 604, uses two or more upstream wavelengths adaptive uni interface speed jointly.Considering from saving wavelength resource, ONU, meeting on the basis be more than or equal to uni interface speed, chooses minimal number of wavelength and carries out multiplexing.As when carrying a road CPRIoption8 high speed business, used two groups of wavelength resources can meet the needs of carrying one road CPRI data service and P2P channel management business in uplink and downlink direction；
Business simulating function, on be about to the business that uni interface module 601 receives, such as CPRI signal, and the management signal assemble that management object module 604 produces is PWE3 mode, according to PWE3 business packet PWlabel in front, by HASH Algorithm mapping to up many groups wavelength channel；So make the OLT supporting NG-PON2 after PON mouth receives the business of multichannel wavelength, according to normal treatment principle, one or more groups business is independently processed, wavelength channel upper connective plate is given by OLT switching network, wavelength channel upper connective plate, by internal rate adaptation service emulation module, sorts according to the PWlabel of PWE3 and recovers CPRI signal and give NNI interface.
Downlink business is reverse process on the rate adaptation service emulation module of ONU, and the one or more (if there is) wavelength models brought by OLT carry out PWLabel sequence and business recovery is then passed to uni interface module 601.
ONU finds that process module 606 is ONU general module, for finding discovery and the register flow path of ONU in ONU.
Above content is in conjunction with specific embodiment further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, protection scope of the present invention all should be considered as belonging to.
Claims (10)
1. a business transmitting method, it is characterised in that be applied to the NG-PON2 P2P type ONU accessed, comprise the steps:
The speed of the business that detection ONU accesses；
When the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, determining according to the speed of described business and described maximum bearer rate and carry the quantity of upstream wavelength needed for described business, described quantity is more than or equal to 2；
Described business is sent to OLT by the upstream wavelength adopting described quantity.
2. business transmitting method as claimed in claim 1, it is characterised in that the described speed according to described business and described maximum bearer rate determine carry described business needed for the step of quantity of upstream wavelength include:
Speed according to described business and described maximum bearer rate are determined and are carried the minimum number of upstream wavelength needed for described business.
3. business transmitting method as claimed in claim 1, it is characterised in that the step that described business is sent to OLT is included by the upstream wavelength of the described quantity of described employing:
The upstream wavelength of selected described quantity；
By the subservice that described delineation of activities is described quantity；
Described subservice is identified, and is sent to OLT by a selected upstream wavelength.
4. the business transmitting method as described in any one of claim 1-3, it is characterised in that described business includes: CPRI business.
5. the business transmitting method as described in any one of claim 1-3, it is characterised in that also include:
Receive the OLT business datum sent by the downstream wavelength of described quantity, then the business datum received is recovered.
6. the business transmitting method as described in any one of claim 1-3, it is characterized in that, also include: when the maximum bearer rate of a upstream wavelength during the speed of described business is less than or equal to NG-PON2, adopt a upstream wavelength that described business is sent to OLT.
7. a service transmission device, it is characterised in that be applied to the NG-PON2 P2P type ONU accessed, including: detection module, Service Processing Module and business sending module；
Described detection module, for detecting the speed of the ONU business accessed；
Described Service Processing Module, for when the maximum bearer rate of a upstream wavelength during the speed of described business is more than NG-PON2, speed according to described business and described maximum bearer rate are determined and are carried the quantity of upstream wavelength needed for described business, and described quantity is more than or equal to 2；
Described business sending module, for adopting the upstream wavelength of described quantity that described business is sent to OLT.
8. service transmission device as claimed in claim 7, it is characterised in that described Service Processing Module, determines for the speed according to described business and described maximum bearer rate and carries the minimum number of upstream wavelength needed for described business.
9. service transmission device as claimed in claim 7 or 8, it is characterised in that described sending module, is used for:
The upstream wavelength of selected described quantity；
By the subservice that described delineation of activities is described quantity；
Described subservice is identified, and is sent to OLT by a selected upstream wavelength.
10. service transmission device as claimed in claim 7 or 8, it is characterized in that, described business sending module, be additionally operable to the speed in described business less than or equal to NG-PON2 in the maximum bearer rate of a upstream wavelength, adopt a upstream wavelength that described business is sent to described OLT.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797455.0A CN105763963A (en) | 2014-12-18 | 2014-12-18 | Service transmission method and device |
| PCT/CN2015/076675 WO2016095381A1 (en) | 2014-12-18 | 2015-04-15 | Service transmission method and device |
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| CN201410797455.0A CN105763963A (en) | 2014-12-18 | 2014-12-18 | Service transmission method and device |
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| WO (1) | WO2016095381A1 (en) |
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| TWI629876B (en) * | 2016-11-30 | 2018-07-11 | 中華電信股份有限公司 | An elastic physical layer grid optical network interactive operation transmission device for switching and converting an upstream optical wavelength of a plurality of optical network units into a specified optical wavelength of NG-PON2 |
| CN108521617A (en) * | 2018-06-26 | 2018-09-11 | 瑞斯康达科技发展股份有限公司 | A kind of business routing discovering method and device, computer readable storage medium |
| CN108521617B (en) * | 2018-06-26 | 2020-10-23 | 瑞斯康达科技发展股份有限公司 | Service route discovery method and device and computer readable storage medium |
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