CN102811159A - Method and device for scheduling upstream service - Google Patents
Method and device for scheduling upstream service Download PDFInfo
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- CN102811159A CN102811159A CN2011101483797A CN201110148379A CN102811159A CN 102811159 A CN102811159 A CN 102811159A CN 2011101483797 A CN2011101483797 A CN 2011101483797A CN 201110148379 A CN201110148379 A CN 201110148379A CN 102811159 A CN102811159 A CN 102811159A
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Abstract
The invention provides a method and a device for scheduling an upstream service, which are used in gigabit-capable passive optical networks. The method comprises the following steps of: creating a bearer service channel and setting a mapped bearer service channel to the service flows of users; when multiple service flows are borne on the bearer service channel, determining the priorities of the service flows, and setting mapped arrays to several service flows according to the priorities of the arrays on the bearer service channel. According to the embodiment, an ONT (optical network termination) detects the flow of each service in the data upstream direction, distinguishes the flow of the same service of several users, schedules the services of different users on the same Gem-port according to the priorities of the users, ensures the service distinguishing of the same service of multiple users and controls the upstream scheduling grade, thereby realizing the multi-user concentrated upstream priority scheduling in the same service channel, detailing the service scheduling, respectively scheduling the same service of multiple users and furthest meeting the needs of different users.
Description
Technical field
The present invention relates to Gigabit Passive Optical Network (GPON) system, relate in particular to a kind of dispatching method and system of uplink service.
Background technology
Gigabit Passive Optical Network (GPON) technology be based on ITU-T G.984.x the latest generation broadband passive light of standard comprehensively insert standard; Have advantages such as high bandwidth, high efficiency, large coverage and user interface enrich, be regarded as the desirable technique that realizes that the Access Network business is broadband, synthesization is transformed by most of operators.
As shown in Figure 1; Comprise the optical line terminal (OLT) of local side, ONT Optical Network Terminal (ONT), Optical Distribution Network (ODN) and the network management system of user side in the GPON system, Optical Distribution Network comprises monomode fiber (SM fiber) and the passive optical splitters (Splitter) that connects OLT and ONT.The up connection network edge router of OLT (pe router) in the telecommunications networking; And the router (P router) that is in network core; And (Virtual Private Network, VPN) technology finally is connected to each service provider to obtain miscellaneous service to use VPN.
Professional requirement to network performance is directed to professional perception to the customer satisfaction degree in the network.Especially for the increasing real time business that in network, emerges at present; Like the networking telephone (Voice over Internet Protocol; VoIP), IPTV (Internet Protocol Television; IPTV), video request program (Video On Demand, VOD) and high speed internet (High Speed Internet, HIS) etc.; Real time business is to available bandwidth, time delay, shake and packet loss are very responsive end to end, and these performance parameters are having a strong impact on this type of professional carrying out and operation maintenance.The composite entity of these performance parameters has reflected the QoS (service quality) that bearer network can provide, and accurately holding these network QoS indexs is bases that network carrying performance is tested and assessed.
A plurality of users share a up total bandwidth with time-multiplexed form in the GPON system; OLT adopts Dynamic Bandwidth Allocation (DBA) to regulate each user's bandwidth; Be that OLT is that each user's transmission container (T-CONT) distributes up sending time slots, a T-CONT comprises one or more bearer service passages (Gemport), and each user's T-CONT bandwidth all can guaranteed bandwidth and maximum bandwidth; Guarantee that the flow in the bandwidth is that system under any circumstance can satisfy; Maximum bandwidth be with situation that other users' assurance bandwidth is not conflicted under, system gives user's peak flow values, like this can the more efficient use system bandwidth.Concerning independent domestic consumer, need different business such as carrying VoIP, HSI, IPTV and VOD, these business adhere to different Gemport separately, adopt schedule level one to come miscellaneous service is done priority control between the different Gemport.
Existing network adopts usually carries out the strict priority (sp) scheduling to the business of same T-CONT, promptly according to the priority mapping relation, preferentially guarantees the business that rank is high.For example; Real-time requires the highest VoIP service priority (802.1q Priority) the highest; Be generally 7, the data traffic that SP scheduling can guarantee fully that belongs to of the business of this priority is preferentially passed through, and the priority of HSI, IPTV and VOD is respectively Priority=6, Priority=5, Priority=4 from high to low; The priority that is HSI is higher than IPTV; The priority of IPTV is higher than VOD, and after the scheduling method of design passed through the business of high priority fully in this manner, the business of next priority obtained bandwidth.
Summary of the invention
The technical problem that the present invention will solve provides a kind of dispatching method and system of uplink service, can realize the Business Stream on the same Gemport is dispatched.
For solving the problems of the technologies described above, the dispatching method of a kind of uplink service of the present invention is applied to comprise in the Gigabit Passive Optical Network:
Create the bearer service passage, the bearer service passage that is mapped to for the user service flow setting;
When on the bearer service passage, carrying a plurality of Business Stream, confirm the priority of a plurality of Business Streams, and according to the priority of the formation on the bearer service passage, the formation that is mapped to for a plurality of Business Stream settings.
Further, confirm the priority of a plurality of Business Streams, and according to the priority of the formation on the bearer service passage, the formation that is mapped to for a plurality of Business Stream settings comprises:
When a plurality of Business Streams are the Business Stream of identical type of different user; Confirm the priority of a plurality of Business Streams according to user's priority; And according to the priority of formation, according to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings.
Further, confirm the priority of a plurality of Business Streams, and according to the priority of the formation on the bearer service passage, the formation that is mapped to for a plurality of Business Stream settings comprises:
When a plurality of Business Streams are different types of Business Stream of same user; Confirm the priority of a plurality of Business Streams according to the type of service under the Business Stream; And according to the priority of formation, according to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings.
Further, also comprise:
After creating the bearer service passage,, the priority of the corresponding bearer service passage of Business Stream is set according to the priority of loaded service stream on the bearer service passage.
Further, also comprise:
After creating the bearer service passage, a plurality of bearer service passages are mapped to a transmission container;
After the formation that the priority that the bearer service passage is set also is mapped to for a plurality of Business Stream settings on the same bearer service passage; According to the priority of bearer service passage and the bandwidth of transmission container is bearer service channel allocation bandwidth; In the bearer service passage, be the queue assignment bandwidth according to the priority of formation.
Further, a kind of dispatching device of uplink service is applied to comprise in the Gigabit Passive Optical Network: the bearer service passage is created unit, Business Stream mapping dispensing unit and second-level dispatching unit, wherein:
The bearer service passage is created the unit, is used to create the bearer service passage;
Business Stream mapping dispensing unit is used to the bearer service passage that the user service flow setting is mapped to;
The priority of a plurality of Business Streams when being used on the bearer service passage, carrying a plurality of Business Stream, is confirmed in the second-level dispatching unit, and according to the priority of the formation on the bearer service passage, the formation that is mapped to for a plurality of Business Stream settings.
Further; The second-level dispatching unit is when a plurality of Business Streams are the Business Stream of identical type of different user; Confirm the priority of a plurality of Business Streams according to user's priority; And according to the priority of formation, according to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings.
Further; The second-level dispatching unit is when a plurality of Business Streams are different types of Business Stream of same user; Confirm the priority of a plurality of Business Streams according to the type of service under the Business Stream; And according to the priority of formation, according to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings.
Further, also comprise the schedule level one unit;
The schedule level one unit is used for after the bearer service passage is created unit establishment bearer service passage, according to the priority of loaded service stream on the bearer service passage, the priority of the corresponding bearer service passage of Business Stream being set.
Further, also comprise the band width configuration unit;
The schedule level one unit also is used for a plurality of bearer service passages are mapped to a transmission container;
The band width configuration unit, being used for according to the priority of bearer service passage and the bandwidth of transmission container is bearer service channel allocation bandwidth, in the bearer service passage, is the queue assignment bandwidth according to the priority of formation.
In sum, this execution mode ONT detects miscellaneous service flow, the flow of the same business of dividing multi-user in the data uplink direction; Priority according to the user is dispatched the business of the different user on the same Gemport, guarantees same professional multi-user's traffic differentiation, controls its uplink scheduling rank; Realized same service channel, the multi-user concentrates upstream priority scheduling, the scheduling that refinement is professional; Can dispatch respectively the same business of multi-user; Meet the needs of different users to greatest extent, and taking place under the congested situation, the assurance high-priority service is preferentially passed through.
Description of drawings
Fig. 1 is the Organization Chart of GPON system in the prior art;
Fig. 2 is the flow chart of dispatching method of the uplink service of embodiment of the present invention;
Fig. 3 is the structure chart of dispatching device of the uplink service of embodiment of the present invention.
Embodiment
The scheduling method of considering uplink service in the present GPON system is the scheduling of carrying out in the Gemport aspect, just uplink service is realized scheduling through Gemport simply, then can't dispatch for the Business Stream that is mapped among the same Gemport; For example, a user is hung in two each times of port of ONT, and is professional identical; If these two users need distinguish priority; Such as one be VIP user, one is domestic consumer, when these two users' business is mapped to same Gemport; Can't realize the User Priority differentiation at present, this is the defective of a realization mechanism.Similarly, if there are two kinds of business to be mapped to a Gemport, also can't dispatch at present these two kinds of business.
In this execution mode; In the time need the identical services of different business or different user being mapped to same Gemport; Correspondingly business is mapped to the formation of the different priorities of Gemport according to business or user's priority, realizes scheduling the business on the same Gemport.
Fig. 2 is the flow process of dispatching method of the uplink service of this execution mode, is that to be mapped among the same Gemport with the identical services stream with different user be the explanation of example to this method below, comprising:
Step 201:ONT is mapped to a T-CONT for every kind of service creation Gemport of user's request with a plurality of Gemport;
Step 202: the priority that the Gemport of professional correspondence is set according to service priority;
To adopting the SP scheduling method between the Gemport, can guarantee that the scheduling between the multi-service distributes.
Step 203: be provided with from the Business Stream of the next different user of different ports and be mapped to professional corresponding Gemport respectively;
Step 204: in Gemport; Business Stream with different user; Priority height according to the user; Be mapped to the different queue (queue) of Gemport, the Business Stream of high-priority users is mapped to the queue of high priority, the Business Stream of low priority user is mapped to the queue of low priority;
Business Stream with different user in Gemport is mapped to different queue, can guarantee that the scheduling between the multi-user of identical services distributes.
Step 205: the bandwidth according to the priority of Gemport and T-CONT is that Gemport distributes bandwidth, in Gemport, is the queue assignment bandwidth according to the priority of formation, with traffic streams.
Moreover; Go up the situation of the multiple different business stream that carries same user for same Gemport; Being with the difference of the foregoing description, is not to be to create Gemport respectively for every kind of business in step 201, according to different scene; Can be to be unit with user, be Gemport of one or more service creations of user; Be the priority of confirming Business Stream according to the type of service under the Business Stream in step 204, and according to the priority of formation, the height order according to the priority of Business Stream and formation is provided with the formation that Business Stream is mapped to.
Above-mentioned execution mode carries out a SP scheduling for upstream through the inner queue of Gemport, can distinguish multi-user's priority; Between many Gemport, once dispatch, can distinguish multiple services priority, realize multi-users and multiple services scheduling simultaneously through above-mentioned two layers of scheduling, refinement multiple different service streams, improved user's business experience.
Fig. 3 is the dispatching device of the uplink service of this execution mode, is applied to comprise in the Gigabit Passive Optical Network: the bearer service passage is created unit, Business Stream mapping dispensing unit, schedule level one unit, second-level dispatching unit and band width configuration unit, wherein:
The bearer service passage is created the unit, is used to create the bearer service passage;
Business Stream mapping dispensing unit is used to the bearer service passage that the user service flow setting is mapped to;
The schedule level one unit; Be used for after the bearer service passage is created unit establishment bearer service passage; According to the priority of loaded service stream on the bearer service passage, the priority of the corresponding bearer service passage of Business Stream is set, a plurality of bearer service passages are mapped to a transmission container.
The priority of a plurality of Business Streams when being used on the bearer service passage, carrying a plurality of Business Stream, is confirmed in the second-level dispatching unit, and according to the priority of the formation on the bearer service passage, the formation that is mapped to for a plurality of Business Stream settings.
The second-level dispatching unit is when a plurality of Business Streams are the Business Stream of identical type of different user; Confirm the priority of a plurality of Business Streams according to user's priority; And according to the priority of formation; According to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings; When a plurality of Business Streams are different types of Business Stream of same user; Confirm the priority of a plurality of Business Streams according to the type of service under the Business Stream; And according to the priority of formation, according to the height order of the priority of multiple business stream and formation, the formation that is mapped to for a plurality of Business Stream settings.
The band width configuration unit, being used for according to the priority of bearer service passage and the bandwidth of transmission container is bearer service channel allocation bandwidth, in the bearer service passage, is the queue assignment bandwidth according to the priority of formation.
Applying examples:
Pass through multi-user's multi-service below, the example that the User Priority different scene is dispatched further specifies this execution mode; Business scenario is following, and the mouth of ONT is hung user 11 time, mouthful 2 times extension users 2; Mouth is hung users 33 times, and mouth 4 is walked IPTV, requires user 1,2 and 3 businesss of networking to walk same Gemport; But the priority between the user is user 1>user 2>user 3, the priority between the business is speech business>IPTV is professional>business of networking, comprise to the scheduling process of this scene:
Step a: speech business is set carries at Gemport 4, the priority of Gemport 4 is for the highest by 7;
Step b: the IPTV uplink service is set carries at Gemport 2, the priority of Gemport 2 is 6;
Step c: the business of networking that user 1, user 2 and user 3 are set is carried at Gemport 1, and the priority of Gemport 1 is 3;
Steps d: the priority of the formation in Gemport 1 is formation 1>during formation 2>formation 3; User 1 business of networking is mapped to the formation 1 of Gemport 1; User 2 business of networking is mapped to the formation 2 of Gemport 1, user 3 business of networking is mapped to the formation 3 of Gemport 1;
The formation 1 of Gemport 1, formation 2 and formation 3 are the SP scheduling method, and priority is formation 1>formation 2>formation 3.
Step e: Gemport 4, Gemport 2 and Gemport 1 are associated with same T-CONT;
Step f: Gemport 4, Gemport 2 and Gemport 1 are set are the SP scheduling method, priority is configured to Gemport 4>Gemport 2>Gemport 1.
Supposing OLT to be the T-CONT bandwidth of distributing be fixing 10M, ONT to send out three user's business of networking data flow, to be respectively user 1 be 6M, and user 2 is 5M; User 3 is 5M, watches IPTV simultaneously, and is in the conversation; Then the Gemport 4 of carry voice traffic distributes the 500K bandwidth; The Gemport 2 that carries IPTV distributes the 50K bandwidth, guarantees normally operation, and the user on the Gemport 11 business of networking is distributed the 6M bandwidth; User 2 business of networking is distributed the 3.45M bandwidth, and user 3 business of networking does not have allocated bandwidth.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the dispatching method of a uplink service is applied to comprise in the Gigabit Passive Optical Network:
Create the bearer service passage, the bearer service passage that is mapped to for the user service flow setting;
When on said bearer service passage, carrying a plurality of Business Stream, confirm the priority of said a plurality of Business Streams, and according to the priority of the formation on the said bearer service passage, the formation that is mapped to for said a plurality of Business Stream settings.
2. the method for claim 1 is characterized in that, the said priority of confirming said a plurality of Business Streams, and according to the priority of the formation on the said bearer service passage, the formation that is mapped to for said a plurality of Business Stream settings comprises:
When the Business Stream of said a plurality of Business Streams identical type that is different users; Confirm the priority of said a plurality of Business Streams according to said user's priority; And according to the priority of said formation; According to the height of the priority of said multiple business stream and said formation in proper order, the formation that is mapped to for said a plurality of Business Stream settings.
3. the method for claim 1 is characterized in that, the said priority of confirming said a plurality of Business Streams, and according to the priority of the formation on the said bearer service passage, the formation that is mapped to for said a plurality of Business Stream settings comprises:
When said a plurality of Business Streams are different types of Business Stream of same user; Confirm the priority of said a plurality of Business Streams according to the type of service under the said Business Stream; And according to the priority of said formation; According to the height of the priority of said multiple business stream and said formation in proper order, the formation that is mapped to for said a plurality of Business Stream settings.
4. like claim 2 or 3 described methods, it is characterized in that, also comprise:
Behind said establishment bearer service passage,, the priority of the corresponding bearer service passage of said Business Stream is set according to the priority of loaded service stream on the said bearer service passage.
5. method as claimed in claim 4 is characterized in that, also comprises:
Behind said establishment bearer service passage, a plurality of bearer service passages are mapped to a transmission container;
After the formation that the priority that said bearer service passage is set also is mapped to for a plurality of Business Stream settings on the same bearer service passage; According to the priority of bearer service passage and the bandwidth of transmission container is bearer service channel allocation bandwidth; In the bearer service passage, be the queue assignment bandwidth according to the priority of formation.
6. the dispatching device of a uplink service is applied to comprise in the Gigabit Passive Optical Network: the bearer service passage is created unit, Business Stream mapping dispensing unit and second-level dispatching unit, wherein:
Said bearer service passage is created the unit, is used to create the bearer service passage;
Said Business Stream mapping dispensing unit is used to the bearer service passage that the user service flow setting is mapped to;
Said second-level dispatching unit; When being used on said bearer service passage, carrying a plurality of Business Stream; Confirm the priority of said a plurality of Business Streams, and according to the priority of the formation on the said bearer service passage, the formation that is mapped to for said a plurality of Business Stream settings.
7. device as claimed in claim 6 is characterized in that:
Said second-level dispatching unit is when the Business Stream of said a plurality of Business Streams identical type that is different users; Confirm the priority of said a plurality of Business Streams according to said user's priority; And according to the priority of said formation; According to the height of the priority of said multiple business stream and said formation in proper order, the formation that is mapped to for said a plurality of Business Stream settings.
8. device as claimed in claim 6 is characterized in that:
Said second-level dispatching unit is when said a plurality of Business Streams are different types of Business Stream of same user; Confirm the priority of said a plurality of Business Streams according to the type of service under the said Business Stream; And according to the priority of said formation; According to the height of the priority of said multiple business stream and said formation in proper order, the formation that is mapped to for said a plurality of Business Stream settings.
9. like claim 6 or 7 described devices, it is characterized in that, also comprise the schedule level one unit;
Said schedule level one unit is used for after said bearer service passage is created unit establishment bearer service passage, according to the priority of loaded service stream on the said bearer service passage, the priority of the corresponding bearer service passage of said Business Stream being set.
10. device as claimed in claim 9 is characterized in that, also comprises the band width configuration unit;
Said schedule level one unit also is used for a plurality of bearer service passages are mapped to a transmission container;
Said band width configuration unit, being used for according to the priority of bearer service passage and the bandwidth of transmission container is bearer service channel allocation bandwidth, in the bearer service passage, is the queue assignment bandwidth according to the priority of formation.
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