CN101047454A - Flow mapping method in passive optical network system - Google Patents
Flow mapping method in passive optical network system Download PDFInfo
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- CN101047454A CN101047454A CNA2006100805186A CN200610080518A CN101047454A CN 101047454 A CN101047454 A CN 101047454A CN A2006100805186 A CNA2006100805186 A CN A2006100805186A CN 200610080518 A CN200610080518 A CN 200610080518A CN 101047454 A CN101047454 A CN 101047454A
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Abstract
A method for mapping flow rate in passive optical network system includes configuring flow rate link of each user data stream to port then to virtual transmission container T-CONT, carrying flow rate link information in each user data stream, mapping received user data stream onto port in corresponding flow rate link first and then mapping received user data stream from port to T-CONT in flow rate link for sending out according to flow rate link information in user data stream after said user data stream is received optical fiber access terminal unit ONU/T.
Description
Technical field
The present invention relates to the business data processing technology in EPON (PON) system, the flow mapping method in particularly a kind of EPON (PON) system.
Background technology
The fiberize fully of present global backbone network, mainly promote transmission bandwidth (2.5G～10Tbps) with DWDM (dense wave division multipurpose) technology, the optical fibre for metropolitan area network rate of growth increases hastily, closeness is near saturated, wherein important technology has SONET/SDH-Based Metro Optical Network (based on the metropolitan area optical network of SONET/SDH), Metro WDM (metropolitan area wavelength division multiplexing) and Optical MetroEthernet (access of optical-fiber network ether) etc., about 2.5G-＞the 10Gbps of the bandwidth of every wavelength, and the ethernet speed main flow of local area network (LAN) occupation rate first has tromped to the 1Gbps of Optical Fiber Transmission from 100Mbps, from the overall network angle, only between the access network speed of metropolitan area network and local area network (LAN) still at digital user loop (Digital Subscriber Loop, DSL) Mega (1,000,000) grade, Access Network will be bandwidth bottlenecks maximum on the present network.
In order to improve the network bandwidth of Access Network, avoid becoming the network bandwidth bottleneck of global overall network, proposed at present to use Optical Fiber Transmission data ground technology at Access Network, promptly the fiber access device of the office side from Access Network (OLT) adopts optical fiber to the data transmission link the fiber access terminal equipment (ONU/T).Wherein, ONU/T can be placed into roadside, commercial residential building building even be placed in the man of resident family, the different service modes of distinguishing of distance according to the fiber-to-the-subscriber extension, the fiberize technology of the Xing Chenging (FTTC that is that Fiber To The Curb respectively, Fiber To The Curb) technology, Fiber-To-The-Building (FTTB, Fiber ToThe Building) technology and Fiber to the home (FTTH, Fiber To The Home) technology also can be commonly referred to as FTTx.
The FTTC technology mainly is for uptown user serves, ONU/T is positioned over the roadside cabinet after, draw coaxial cable or twisted-pair feeder transmits data for the user from ONU/T again.
The object of FTTB technological service has two kinds: first kind is to be the service of the user in the mansion, and another kind is to be the company service in the commercial building.These two kinds of methods of service all are the basement distributing cabinet places that ONU/T is arranged on mansion or commercial building, just the ONU/T of mansion is the ONU/T extension in the FTTC technology, and commercial building is for company, must improve the network bandwidth, thereby ONU/T is set.
The FTTH technology extends to user's family with the distance of optical fiber, and making to provide the higher network bandwidth for the user.At present, the FTTH technology adopts point-to-multipoint (P2MP, Point to Mult-Point) the PON pattern of framework, as shown in Figure 1, Fig. 1 is for adopting the PON networking structure schematic diagram of FTTH technology, under this pattern with the light signal of OLT downlink transmission data, by an optical fiber via optical branching device passive device (Splitter), classification is broadcast to each ONU/T, significantly is reduced to the cost that OLT sets up network computer room and plant maintenance, has saved construction costs such as a large amount of cable resources.
International Telecommunication Union is organized in and has proposed G.984.3 agreement in February, 2004, the downlink network bandwidth that proposition is supported in the PON that uses the FTTH technology is 1.24416 (megabyte/second) Gbit/s or 2.48832Gbit/s, the uplink network bandwidth of supporting is 0.15552Gbit/s, 0.62208Gbit/s, 1.24416Gbit/s or 2.48832Gbit/s, GPON transmission convergence layer structure, message have also been proposed, apart from amendment scheme, safeguard the specification of functions such as (OAM) function and fail safe.
Importantly, in agreement G.984.3, proposed virtual transmission container (T-CONT) and port (Port) notion, defined the virtual pipeline control model that is similar to the ATM mode.As shown in Figure 2, the virtual pipeline control model schematic diagram that provides for agreement of Fig. 2.Fig. 2 has provided among the PON can comprise a plurality of ONU, and each ONU can discern by the ONU-ID that comprises in the information transmitted; Each ONU can corresponding a plurality of T-CONT, and each T-CONT discerns by the Alloc-ID that comprises in the information transmitted; Each T-CONT can corresponding a plurality of Port, and each Port can discern by the Port-ID that comprises in the information transmitted.Usually, each ONU/T can be assigned to 8 T-CONT.Each ONU/T can be assigned to 32 Port-ID usually, and the Port-ID of every same type uses same T-CONT.More than concrete numerical value be a reference value, can carry out specifically and define along with business.
Wherein, T-CONT is the most basic control unit, and each T-CONT can the independent flow parameter of separate configurations, and can use DBA (Dynamic Bandwidth Allocation) to carry out the dynamic bandwidth flow to guarantee.In GEM (encapsulated delivery polymerization adaptation layer) business, the flow link of being determined according to Alloc-ID, Port-ID by T-CONT is also realized multiplexing service stream.
But, G.984.3 only provided virtual pipeline control model schematic diagram in the agreement, how clearly not proposing the flow link that will be determined by T-CONT and Port-ID and concrete business maps, realize concrete business, cause this technology can't be applied directly in the practical business, hindered the popularization and the development of this technology.
Summary of the invention
In view of this, main purpose of the present invention is to provide the flow mapping method in a kind of passive optical network, and this method can realize concrete business with the flow link maps of stipulating in concrete business data flow and the agreement.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
Flow mapping method in a kind of passive optical network may further comprise the steps:
Dispose each user data and flow to the flow link that port Port arrives virtual transmission container T-CONT again, and in each customer traffic, carry the flow link information;
After fiber access terminal equipment ONU/T receives customer traffic, according to flow link information wherein, earlier the customer traffic that receives is mapped to the Port in the corresponding flow link, the T-CONT that is mapped to this flow link from Port sends again.
Wherein, the method for described configuration flow link can for: in each subscriber terminal equipment, dispose and write down each bar flow link corresponding user data flow identification information, Port-ID, T-CONT number respectively; Described flow link information comprises: this flow link corresponding user data flow identification information, Port-ID, T-CONT number;
After described ONU/T receives customer traffic, according to the Port-ID in the flow link information customer traffic that receives is mapped to Port in the corresponding flow link, according to the T-CONT in the flow link information customer traffic is mapped to T-CONT in this flow link by Port again, customer traffic is uploaded to office side fiber access device OLT by T-CONT.
User data flow identification information in the described flow link information can comprise: vlan number and priority tag information
Described ONU/T determines that according to VLAN and priority tag information which kind of service-user data flow the customer traffic that receives is.
In FTTC used, described ONU/T linked to each other with a subscriber terminal equipment; This user terminal is to the customer traffic of an above different business of ONU/T output.
Further can comprise in the described flow link information: the T-CONT type information;
Described T-CONT is uploaded to OLT according to the bandwidth of T-CONT type information corresponding user data stream with customer traffic.
In FTTB used, described ONU/T linked to each other with a plurality of subscriber terminal equipments;
Each subscriber terminal equipment is exported one or more customer traffics, and the flow link information of every kind of customer traffic comprises the T-CONT type information;
T-CONT type information in the flow link information of same subscriber terminal equipment is set to identical or different according to the demand of practical business to bandwidth.
In FTTH used, described ONU/T linked to each other with a plurality of subscriber terminal equipments by the different physics Fast Ethernet port of LSW;
Further can comprise in the described flow link information: the corresponding Fast Ethernet port of number of users stream number;
Which kind of service-user data flow described ONU/T is according to number definite customer traffic that receives of VLAN, priority tag information and Fast Ethernet port in the flow link information.
The method of described configuration flow link can for: adopt manual configuration or the information interaction by ONU/T and OLT to be configured.
The described process that is configured by the information interaction of ONU/T and OLT can comprise:
After a, OLT found ONU/T, the physical layer of consulting to set up was between the two safeguarded the PLOAM passage;
B, OLT send to carry to ONU/T by the PLOAM passage and set up the PLOAM message that ONU/T administers and maintains the configuration information of passage OMCI and sets up the configuration information of flow link;
C, the ONU/T that receives PLOAM message set up according to the configuration information of the OMCI that carries and OLT between OMCI, according to the configuration information configuration flow link of the flow link that carries.
The configuration information of the described OMCI of foundation can comprise: the ONU of ONU/T identifies ONU-ID, sets up virtual transmission container T-CONT sign, port-mark PORT-ID and the T-CONT type of OMCI.
The described configuration information of setting up the flow link also can comprise: the ONU of ONU/T identifies ONU-ID, the T-CONT sign of setting up the flow link and Port-ID, VLAN-ID, T-CONT type and comprises the QOS information of service priority information.
Described VLAN-ID, T-CONT type and QoS QOS information can obtain by the server in the external network of the above-mentioned information of visit storage by ONU/T after setting up the PLOAM passage.
As seen from the above technical solutions, the flow mapping method in this passive optical network of the present invention, each user data of configuration flows to the flow link that Port arrives T-CONT again in subscriber terminal equipment, and carries the flow link information in each customer traffic; After ONU/T receives customer traffic,, earlier the customer traffic that receives is mapped to the Port in the corresponding flow link, is mapped to T-CONT this flow link from Port again, customer traffic is uploaded to OLT by T-CONT according to flow link information wherein.
As seen, the present invention can be uploaded to OLT with customer traffic according to the flow link of configuration, has just realized in the PON practical application flow link of stipulating in concrete business and the agreement being shone upon.Simultaneously, the inventive method can also realize flow diversity and professional multifarious simple mapping by the different flow link of configuration, has realized professional rich, easy to operate, easy expansion.
Description of drawings
Fig. 1 is for adopting the PON networking structure schematic diagram of FTTH technology;
The virtual pipeline control model schematic diagram that Fig. 2 provides for agreement;
Fig. 3 is the flow mapping schematic diagram of the present invention's first preferred embodiment;
Fig. 4 is the flow mapping process chart of middle ONU/T embodiment illustrated in fig. 3;
Fig. 5 is the flow mapping schematic diagram of the present invention's second preferred embodiment;
Fig. 6 is the flow mapping process chart of middle ONU/T embodiment illustrated in fig. 5;
Fig. 7 is the flow mapping schematic diagram of the present invention's the 3rd preferred embodiment;
Fig. 8 is the flow mapping process chart of middle ONU/T embodiment illustrated in fig. 6.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
For the downlink data from OLT to ONU/T, can transmit according to the regulation of agreement G.984.3 in the prior art, but can not realize the flow mapping of uplink business data according to this agreement, the flow mapping that to be ONU/T carry out to the upstream data of OLT that therefore the present invention is directed to.
The core of the flow mapping method in this passive optical network of the present invention is: each user data of configuration flows to the flow link that Port arrives T-CONT again in subscriber terminal equipment, and carries the flow link information in each customer traffic; After ONU/T receives customer traffic,, earlier the customer traffic that receives is mapped to the Port in the corresponding flow link, is mapped to T-CONT this flow link from Port again, customer traffic is uploaded to OLT by T-CONT according to flow link information wherein.
Each user data of configuration flows to Port and to the method for the flow link of T-CONT can be again among the present invention: dispose and write down each bar flow link corresponding user data stream, Port-ID, T-CONT number in each subscriber terminal equipment respectively; The flow link information that customer traffic comprises can comprise: this flow link corresponding user data flow identification information, Port-ID, T-CONT number;
Like this, after ONU/T receives customer traffic, just can the customer traffic that receive be mapped to Port in the corresponding flow link according to the Port-ID in the flow link information, according to the T-CONT in the flow link information customer traffic is mapped to T-CONT in this flow link by Port again, customer traffic is uploaded to OLT by T-CONT.
By background technology as can be known, the Alloc-ID that comprises in the data of each T-CONT by transmission discerns; Each Port can discern by the Port-ID that comprises in the data of transmitting; Among the present invention, each customer traffic can be determined by VLAN that comprises in the user data and the priority tag information that is arranged in the QOS information.QOS information can have two kinds to carry mode: in the DS territory (DS-Field) of a kind of IPv4 of being carried at data or IPv6 data, priority tag information can by wherein the 0th～the 3rd totally 4 bits represent, as shown in table 1; Another kind is carried in the TOS byte of IPv4 data, priority tag information can by wherein the 0th～the 2nd totally 3 bits represent, as shown in table 2.
Table 1 table 2
Below at FTTC technology, FTTB technology and the FTTH technology of the fiber-to-the-subscriber that provides in the background technology, lift three preferred embodiments the present invention be described in more detail.
First preferred embodiment:
Referring to Fig. 3, Fig. 3 is the flow mapping schematic diagram of the present invention's first preferred embodiment.Present embodiment is the applicable cases of FTTC.The coaxial cable that utilizes ONU/T to come out in FTTC uses transmits the CATV signal or twisted-pair feeder transmits phone and service on net, the main here data service of considering.In order to reach the assurance flow bandwidth that application software need obtain, the TOS of higher priority can be set usually, expectation obtains higher bandwidth and guarantees.In the present embodiment, ONU/T is exactly this applicable cases, and it has inserted the unique user terminal equipment, and subscriber terminal equipment has been assigned with a VLAN value (VLAN-ID), and is provided with each service priority.The present embodiment medium priority is forced to be provided with, still is to force to be provided with even to be provided with by application software in the subscriber terminal equipment oneself by plug-in device according to port by the ONU/T terminal, can realize, does not repeat them here.
Suppose to use the user of this equipment to contract: IPTV, Net Meeting, VoIP and Data business, this subscriber terminal equipment can be exported above-mentioned four kinds of different customer traffics, in the present embodiment in this subscriber terminal equipment, each business is disposed the flow link respectively, promptly disposed and write down each bar flow link corresponding user data stream, Port-ID, T-CONT number.Can cooperate to come the customer traffic of a kind of business of unique identification in the present embodiment by vlan number and priority tag information.As shown in Figure 3, specific as follows:
1, for IPTV business: T-CONT=1, Port-ID=1, VLAN=201, Pri=0x5;
2, for Net Meeting business: T-CONT=2, Port-ID=3, VLAN=201, Pri=0x3;
3, for VOIP business: T-CONT=6, Port-ID=28, VLAN=201, Pri=0x7;
4, for Data business: T-CONT=7, Port-ID=30, VLAN=201, Pri=0x1.
Comprised above-mentioned flow link information in each customer traffic, wherein, T-CONT is by identifying by Alloc-ID.
In the present embodiment, each business is provided with the flow link respectively, can adopts manual mode setting, also can realize being provided with automatically by following steps:
After step 1, fiber access device OLT found ONU/T, the physical layer of consulting to set up was between the two safeguarded the PLOAM passage;
Here, the configuration information of the described OMCI of foundation can be for the ONU sign ONU-ID of: ONU/T, set up virtual transmission container TCONT sign, port-mark PORT-ID and the TCONT type of OMCI.
The described configuration information of setting up the flow link can identify ONU-ID, the T-CONT sign of setting up the flow link and Port-ID, VLAN-ID, TCONT type and comprise the QOS information of service priority information for the ONU of ONU/T.The VLAN-ID here, TCONT type and QoS QOS information can obtain by the server in the external network of the above-mentioned information of visit storage by ONU/T after setting up the PLOAM passage.
For Fig. 3, its concrete mapping processing procedure is referring to Fig. 4, and Fig. 4 is the flow mapping process chart of middle ONU/T embodiment illustrated in fig. 3.This flow process may further comprise the steps:
In this step, ONU/T determines it is the customer traffic of which kind of business according to vlan number and the priority tag information in the QOS information that customer traffic comprises.
Step 402 according to the Port-ID in the flow link information in the customer traffic, sends to the customer traffic that receives in the flow formation of the Port in the corresponding flow link, and soon customer traffic is mapped to the Port in the corresponding flow link.
Here, it is prior art flow scheduling means commonly used that CAR handles, and no longer describes in detail here.
In the present embodiment, can guarantee the bandwidth of flow by T-CONT.
In fact, T-CONT can have five kinds of service traffics to guarantee rank (T-CONT Type), normally: fixed-bandwidth (1), guarantee bandwidth (2), do not guarantee bandwidth (3), maximum bandwidth (4), mixed mode (5), so the flow of selecting different types of service to obtain for T-CONT guarantees it is different.T-CONT can be concrete according to different T-CONT Type the control flow bandwidth.
And in the present embodiment, ONU/T has only inserted a subscriber terminal equipment, and its flow bandwidth is fixed, and therefore, does not need to use T-CONT Type to distinguish flow bandwidth.
Second preferred embodiment:
Referring to Fig. 5, Fig. 5 is the flow mapping schematic diagram of the present invention's second preferred embodiment.Present embodiment is the applicable cases of FTTB.In FTTB uses, can provide two kinds of different services: a kind of is user's service of mansion, and another kind is that company's row livery of commercial building is engaged in.Two kinds of basement distributing cabinet places that all ONU, T are arranged on the building, just the ONU/T of mansion is the extension of FTTC, and commercial building is for medium-and-large-sized business unit, must improve the speed of transmission, so that broadband services such as data at a high speed, ecommerce, video conference to be provided.
Use for FTTB, each ONU/T may connect a plurality of users or company, can have different bandwidth priority between the user; Company can enjoy the higher bandwidth assurance by contrast, but the bandwidth between the company also is different.
In the present embodiment, user can corresponding subscriber terminal equipment, and a company may comprise a plurality of terminals that connect by local area network (LAN), but to ONU/T, can regard a company as a subscriber terminal equipment.
With first preferred embodiment, present embodiment has increased priority 0x6-video conference relatively.ONU/T has connected user A, user B, two C of company of corporate user, the D of company totally four subscriber terminal equipments simultaneously.
For user A provides same VLAN three kinds of priority bandwidth, corresponding three kinds of different business, two kinds of dissimilar flows guarantee bandwidth, corresponding different T-CONT in the present embodiment.For user B provides same VLAN two kinds of priority bandwidth, corresponding two kinds of different business.For the C of company provides with three kinds of priority bandwidth of two VLAN, corresponding three kinds of different business, two kinds of dissimilar flows guarantee bandwidth, corresponding different T-CONT.For the D of company provides VLAN priority bandwidth corresponding a kind of business.
It should be noted that: in the present embodiment, because each company may require different bandwidth, and also inequality to the bandwidth of company's distribution usually with the bandwidth of distributing to the user.Therefore, in the present embodiment, used service traffics to guarantee rank (T-CONT Type), the flow that T-CONT selects different types of service to obtain guarantees it is different.T-CONT can be concrete according to different T-CONT Type the control flow bandwidth.
In each subscriber terminal equipment, each business has been disposed the flow link respectively in the present embodiment,, promptly disposed and write down the T-CONT Type of each bar flow link corresponding user data stream, Port-ID, T-CONT number and each T-CONT correspondence.Can cooperate to come a kind of customer traffic of unique identification by vlan number and priority tag information in the present embodiment.As shown in Figure 5, specific as follows:
1, for the professional concrete parameter of user A:
Provide IPTV business: T-CONT=1, T-CONT Type=2, Port-ID=1, VLAN=201, Pri=0x5;
Provide Net Meeting business: T-CONT=1, T-CONT Type=2, Port-ID=1, VLAN=201, Pri=0x3;
Provide Data business: T-CONT=2, T-CONT Type=4, Port-ID=2, VLAN=201, Pri=0x1.
2, for the professional concrete parameter of user B:
Provide Data business: T-CONT=3, T-CONT Type=3, Port-ID=3, VLAN=202, Pri=0x1;
Provide VoIP business: T-CONT=3, T-CONT Type=3, Port-ID=4, VLAN=202, Pri=0x7.
3, for the professional concrete parameter of the C of company:
Provide Data business: T-CONT=5, T-CONT Type=5, Port-ID=27, VLAN=203, Pri=0x1;
Provide Net Meeting business: T-CONT=5, T-CONT Type=5, Port-ID=28, VLAN=203, Pri=0x3;
Provide conference telephone service: T-CONT=6, T-CONT Type=1, Port-ID=29, VLAN=204, Pri=0x6.
4, for the professional concrete parameter of the D of company:
Provide Data business: T-CONT=7, T-CONT Type=3, Port-ID=30, VLAN=205, Pri=0x1.
Equally, in the present embodiment, each business of each subscriber terminal equipment is provided with the flow link respectively, can adopts manual mode setting, also can be provided with automatically, concrete identical with first preferred embodiment, no longer repeat specification here.
For Fig. 5, its concrete mapping processing procedure is referring to Fig. 6, and Fig. 6 is the flow mapping process chart of middle ONU/T embodiment illustrated in fig. 5.This flow process may further comprise the steps:
In this step, ONU/T determines it is the customer traffic of which kind of business according to vlan number and the priority tag information in the QOS information that customer traffic comprises.
Step 602 according to the Port-ID in the flow link information in the customer traffic, in the flow formation with the customer traffic prosperity that the receives Port in the corresponding flow link, is about to customer traffic and is mapped to Port in the corresponding flow link.
Here, it is prior art flow scheduling means commonly used that CAR handles, and no longer describes in detail here.
In the present embodiment, guarantee the bandwidth of flow equally by T-CONT.
The 3rd preferred embodiment:
Referring to Fig. 7, Fig. 7 is the flow mapping schematic diagram of the present invention's the 3rd preferred embodiment.Present embodiment is the applicable cases of FTTH.In FTTH uses, the distance of optical fiber is extended to terminal use's family.For this pattern, ONU/T is merely able to provide a simple data link access function, video request program (VOD) business, the homeshopping of concrete characteristic, the multiple business such as give a lesson of being in also need concrete plug-in media user terminal equipment to support, for ONU/T, what can see is MAC, the IP address of different service priority or each plug-in device.
As shown in Figure 7, in the present embodiment, suppose that ONU/T has connected four plug-in subscriber terminal equipments by four physics FE interfaces of LSW, be respectively: be used to realize video request program VOD equipment, can be implemented in the PC of business such as family's shopping, the set-top box (STB) of realization digital cable TV business, the home gateway (Home Gateway) of realization home network, the bandwidth difference that each plug-in subscriber terminal equipment requires.
In each plug-in subscriber terminal equipment, each business is disposed the flow link respectively in the present embodiment, promptly disposed and write down the T-CONT Type of each bar flow link corresponding user data stream, Port-ID, T-CONT number and each T-CONT correspondence.In the present embodiment, can come a kind of customer traffic of unique identification by number cooperation of vlan number, priority tag information and Fast Ethernet port.As shown in Figure 7, specific as follows:
1, for VOD equipment:
T-CONT=1, T-CONT Type=2, PORT-ID=1, VLAN=201, Pri=are indifferent to, FE=1.Because VOD equipment only provides VOD a business, therefore, does not concern its priority, can give tacit consent to, and also can not establish.
2, for PC equipment:
T-CONT＝2，T-CONT?Type＝5、PORT-ID＝2、VLAN＝201、Pri＝1、FE＝2；
T-CONT＝2，T-CONT?Type＝5、PORT-ID＝4、VLAN＝201、Pri＝other、FE＝2。
In the present embodiment, suppose that PC equipment provides two kinds of business, wherein a kind of service priority is than higher, and another professional priority is not required.
3, for the concrete parameter of STB appliance services:
T-CONT=6, T-CONT Type=1, PORT-ID=27, VLAN=201, Pri=are indifferent to, FE=3.Because STB equipment only provides Digital Television a kind of business, therefore, does not concern its priority, can give tacit consent to, and also can not establish.
4, for home gateway:
T-CONT＝7，T-CONT?Type＝5、PORT-ID＝28、VLAN＝201、Pri＝1、FE＝4；
T-CONT＝7，T-CONT?Type＝5、PORT-ID＝29、VLAN＝201、Pri＝7、FE＝4；
T-CONT＝7，T-CONT?Type＝5、PORT-ID＝30、VLAN＝201、Pri＝other、FE＝4。
In the present embodiment, suppose that home gateway provides three kinds of business, wherein two kinds of service priority are determined, and another professional priority is not required.
Equally, in the present embodiment, each business of each subscriber terminal equipment is provided with the flow link respectively, can adopts manual mode setting, also can be provided with automatically, concrete identical with first preferred embodiment, no longer repeat specification here.
For Fig. 7, its concrete mapping processing procedure is referring to Fig. 8, and Fig. 8 is a flow mapping process chart embodiment illustrated in fig. 7.This flow process may further comprise the steps:
In this step, priority tag information in the vlan number that ONU/T comprises according to customer traffic, the QOS information and Fast Ethernet port number determine it is the customer traffic of which kind of business.
Step 802 according to the Port-ID in the flow link information in the customer traffic, sends to the customer traffic that receives in the flow formation of the Port in the corresponding flow link, and soon customer traffic is mapped to the Port in the corresponding flow link.
Here, it is prior art flow scheduling means commonly used that CAR handles, and no longer describes in detail here.
In the present embodiment, guarantee the bandwidth of flow equally by T-CONT.
Among above-mentioned three embodiment, all adopted three grades of flow mappings: one-level is T-CONT, the bandwidth of its principal security flow; Secondary is PORT-ID, and it mainly carries out the scheduling of flow and the control of upstream bandwidth; Three grades is USER, and it mainly utilizes VLAN and QOS to determine which kind of business is the particular user data flow belong to.In the practical application, can on the basis of three grades of flow mappings, increase the selection parameter of each grade simultaneously arbitrarily, realize the more flow bandwidth of horn of plenty.For example: can expand the function of second level Port-ID, make it in same Port-ID, can also realize a plurality of priority schedulings, thereby realize ONU/T is hung under the sight of L2 equipment down, can manage the flow bandwidth of user below the L2.
By the above embodiments as seen, the flow mapping method in this passive optical network of the present invention can be implemented in the PON practical application, and the flow link of stipulating in concrete business and the agreement is shone upon.Simultaneously, the inventive method can also realize flow diversity and professional multifarious simple mapping by the different flow link of configuration, has realized professional rich, easy to operate, easy expansion.
Claims (12)
1, the flow mapping method in a kind of passive optical network is characterized in that, may further comprise the steps:
Dispose each user data and flow to the flow link that port Port arrives virtual transmission container T-CONT again, and in each customer traffic, carry the flow link information;
After fiber access terminal equipment ONU/T receives customer traffic, according to flow link information wherein, earlier the customer traffic that receives is mapped to the Port in the corresponding flow link, the T-CONT that is mapped to this flow link from Port sends again.
2, flow mapping method as claimed in claim 1, it is characterized in that the method for described configuration flow link is: in each subscriber terminal equipment, dispose and write down each bar flow link corresponding user data flow identification information, Port-ID, T-CONT number respectively; Described flow link information comprises: this flow link corresponding user data flow identification information, Port-ID, T-CONT number;
After described ONU/T receives customer traffic, according to the Port-ID in the flow link information customer traffic that receives is mapped to Port in the corresponding flow link, according to the T-CONT in the flow link information customer traffic is mapped to T-CONT in this flow link by Port again, customer traffic is uploaded to office side fiber access device OLT by T-CONT.
3, flow mapping method as claimed in claim 2 is characterized in that, the user data flow identification information in the described flow link information comprises: vlan number and priority tag information
Described ONU/T determines that according to VLAN and priority tag information which kind of service-user data flow the customer traffic that receives is.
4, flow mapping method as claimed in claim 3 is characterized in that, in FTTC used, described ONU/T linked to each other with a subscriber terminal equipment; This user terminal is to the customer traffic of an above different business of ONU/T output.
5, flow mapping method as claimed in claim 3 is characterized in that, further comprises in the described flow link information: the T-CONT type information;
Described T-CONT is uploaded to OLT according to the bandwidth of T-CONT type information corresponding user data stream with customer traffic.
6, flow mapping method as claimed in claim 5 is characterized in that, in FTTB used, described ONU/T linked to each other with a plurality of subscriber terminal equipments;
Each subscriber terminal equipment is exported one or more customer traffics, and the flow link information of every kind of customer traffic comprises the T-CONT type information;
T-CONT type information in the flow link information of same subscriber terminal equipment is set to identical or different according to the demand of practical business to bandwidth.
7, flow mapping method as claimed in claim 6 is characterized in that, in FTTH used, described ONU/T linked to each other with a plurality of subscriber terminal equipments by the different physics Fast Ethernet port of LSW;
Further comprise in the described flow link information: the corresponding Fast Ethernet port of number of users stream number;
Which kind of service-user data flow described ONU/T is according to number definite customer traffic that receives of VLAN, priority tag information and Fast Ethernet port in the flow link information.
8, flow mapping method as claimed in claim 5 is characterized in that, the method for described configuration flow link is: adopt manual configuration or the information interaction by ONU/T and OLT to be configured.
9, flow mapping method as claimed in claim 8 is characterized in that, the described process that is configured by the information interaction of ONU/T and OLT comprises:
After a, OLT found ONU/T, the physical layer of consulting to set up was between the two safeguarded the PLOAM passage;
B, OLT send to carry to ONU/T by the PLOAM passage and set up the PLOAM message that ONU/T administers and maintains the configuration information of passage OMCI and sets up the configuration information of flow link;
C, the ONU/T that receives PLOAM message set up according to the configuration information of the OMCI that carries and OLT between OMCI, according to the configuration information configuration flow link of the flow link that carries.
10, flow mapping method as claimed in claim 9 is characterized in that: the configuration information of the described OMCI of foundation comprises: the ONU of ONU/T identifies ONU-ID, sets up virtual transmission container T-CONT sign, port-mark PORT-ID and the T-CONT type of OMCI.
11, flow mapping method as claimed in claim 9 is characterized in that: the described configuration information of setting up the flow link comprises: the ONU of ONU/T identifies ONU-ID, the T-CONT sign of setting up the flow link and Port-ID, VLAN-ID, T-CONT type and comprises the QOS information of service priority information.
12, flow mapping method as claimed in claim 11, it is characterized in that: described VLAN-ID, T-CONT type and QoS QOS information,, after setting up the PLOAM passage, obtain by ONU/T by the server in the external network of the above-mentioned information of visit storage.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010040310A1 (en) * | 2008-10-09 | 2010-04-15 | 华为技术有限公司 | QoS MAPPING METHOD AND SYSTEM FROM IPv6 TO PON |
| CN101141324B (en) * | 2007-10-12 | 2010-12-08 | 中兴通讯股份有限公司 | Method for implementing distinguished process to transmission information in ethernet monitoring channel |
| CN103780440A (en) * | 2014-02-25 | 2014-05-07 | 上海斐讯数据通信技术有限公司 | Entity relationship model transformation method for managing ONU |
| CN108259355A (en) * | 2014-12-30 | 2018-07-06 | 华为技术有限公司 | A kind of message forwarding method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102572617B (en) * | 2010-12-17 | 2015-06-03 | 中兴通讯股份有限公司 | Private network server access method and optical network unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100355248C (en) * | 2003-09-28 | 2007-12-12 | 上海贝尔阿尔卡特股份有限公司 | Multiple business realizing method based on ethernet passive optical network |
| CN1326340C (en) * | 2003-10-21 | 2007-07-11 | 华为技术有限公司 | Passive optical network dynamic bandwide distributing apparatus and method |
| KR100594983B1 (en) * | 2003-12-20 | 2006-06-30 | 엘지노텔 주식회사 | Method for communication between optical network units in broadband passive optical network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101141324B (en) * | 2007-10-12 | 2010-12-08 | 中兴通讯股份有限公司 | Method for implementing distinguished process to transmission information in ethernet monitoring channel |
| WO2010040310A1 (en) * | 2008-10-09 | 2010-04-15 | 华为技术有限公司 | QoS MAPPING METHOD AND SYSTEM FROM IPv6 TO PON |
| CN103780440A (en) * | 2014-02-25 | 2014-05-07 | 上海斐讯数据通信技术有限公司 | Entity relationship model transformation method for managing ONU |
| CN108259355A (en) * | 2014-12-30 | 2018-07-06 | 华为技术有限公司 | A kind of message forwarding method and device |
| CN108259355B (en) * | 2014-12-30 | 2022-03-11 | 华为技术有限公司 | Message forwarding method and device |
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