CN100512287C - Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol - Google Patents
Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol Download PDFInfo
- Publication number
- CN100512287C CN100512287C CNB2005100279311A CN200510027931A CN100512287C CN 100512287 C CN100512287 C CN 100512287C CN B2005100279311 A CNB2005100279311 A CN B2005100279311A CN 200510027931 A CN200510027931 A CN 200510027931A CN 100512287 C CN100512287 C CN 100512287C
- Authority
- CN
- China
- Prior art keywords
- module
- optical network
- line terminal
- network unit
- label
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A passive optical network system based on label exchanging protocol of universal multi-protocol is prepared as connecting optical line terminal OLT to multiple optical network unit ONU by wideband passive optical distribution network , using OLT and ONU as edge router and GMPLS domain of said exchanging protocol for being connected to the other GMPLS router in said multi-protocol by communication link , using OLT as intermediate router of integrated service in system individually for controlling all communication activities , using ONU as inlet router of integrated service in system for executing command of OLT .
Description
Technical field
The present invention relates to the system in a kind of optical communication technique field, particularly a kind of passive optical network based on generalized multiprotocol label switching (GMPLS) protocol.
Background technology
EPON is a kind of new technology of utilizing optical fiber to realize broadband access, can provide ultra broadband to insert the requirement of satisfying following customer multi-media and real-time service transmission.At present passive optical network mainly contain asynchronous transfer mode passive optical network APON (G.983 ITU-T advises), based on the passive optical network EPON (ieee standard 802.3ah) of gigabit Ethernet and gigabit than passive optical network GPON (G.984 ITU-T advises).These three kinds of technology all are present Research of accessing network technology emphasis, and have all had international standard.
Find through literature search, based on passive optical network EPON (the ieee standard file IEEE std 802.3ah of gigabit Ethernet prior art
TM-2004, IEEE standard for information technology-Telecommuncations and information exchange between systems-local andmetropolitan area networks-specific requirements, part3, amendment, U.S. IEEE, 802.3ah information technology standard-intersystem communications and information exchange-local area network (LAN) and metropolitan area network-specific (special) requirements, third part, replenish, promulgation in 2004), the grouped data of transmission Ethernet encapsulation in EPON, and utilize Multi-point Control Protocol MPCP to provide based on time-multiplexed medium access control ability, realized simultaneously guaranteeing model based on the service quality of Differentiated Services DiffServ.But there are some intrinsic defective and deficiencies in this technology, as typically not considering the fusion of Access Network and the local core net of service provider based on the EPON EPON of gigabit Ethernet, particularly with the fusion problem of future based on the core net of universal tag exchange, and ether packet encapsulation efficient is low, second-rate based on Differentiated Services DiffServ service model to single traffic stream service, do not support fast tag exchange, lack the control and management technology unified, lack unified defectives such as network resource planning with core net.
GMPLS Control (IETF RFC 3945) is more unified management and an operation platform agreement about automatic optical exchange network ASON in future (G.8080 ITU-T advises) of Recent study, and the unified management and the control of the whole network can be provided.The utilization of general multiple protocols label switching traffic engineering technology makes the resource of network and transmission performance reach optimization when helping network-efficient, reliable running.Reciprocity network model has been used in the exchange of general multiple protocols label, has opened the internal structure in light territory, and router can be controlled photosphere.Make the control plane flattening like this, crossed over the equipment of core optical networks and periphery, unified Based Intelligent Control and management plane is provided.
Summary of the invention
The present invention is directed to each EPON exists in the background technology deficiency and defective, a kind of passive optical network based on generalized multiprotocol label switching (GMPLS) protocol is provided, make the seamless fusion of the local core net of its optical access network and service provider, form unified Based Intelligent Control and management platform, improve efficiency of transmission, optimized allocation of resources solves the service quality problem that has Access Network now.
The present invention is achieved by the following technical solutions, the present invention includes: an optical line terminal OLT and a plurality of optical network unit ONU, broadband passive optical distribution network.Between an optical line terminal OLT and a plurality of optical network unit ONU, link to each other by the broadband passive optical distribution network, optical line terminal OLT and optical network unit ONU are as the edge router in service provider's core net generalized multiprotocol label switching (GMPLS) protocol GMPLS territory, be connected by communication link with GMPLS router other in the core net, optical line terminal OLT is separately as integrated service intermediate router in the system, it is in leading position, all communication activity are controlled by optical line terminal OLT, optical network unit is separately as integrated service entrance router in the system, it belongs to subordinate status, and optical network unit ONU is specifically carried out the order of optical line terminal OLT.Access net system is finished all limbic functions as the edge device of the local core net of service provider, and physical-layer techniques adopts the general mature technology of EPON.
Described optical line terminal OLT is made up of control plane and datum plane, its control plane comprises: the first general signaling processing module, insert and allow control module, first administration module, routing module, datum plane has the universal tag forwarding module, optical line terminal OLT is in leading position in whole system, the first general signaling processing module that at first enters control plane from the service or the control request of user or optical network unit ONU carries out analyzing and processing, the control that relates to system's control and other services is directly handled by the signalling module of expansion, the service of relating to admits the message of control and parameter to transfer to insert to allow the control module decision whether to admit this request, insert and allow module to insert the calculating of permission control algolithm accordingly according to the resource situation of resource situation of Access Network own and core net, core net does not have corresponding resource if Access Network has enough resources, also must send service request to core net by the first general signaling processing module and routing module, finally return if service is admitted and to confirm to the user and inform relevant every parameter that is used for disposing each module of optical network unit ONU datum plane and be distributed to the label value that this is connected, service connects the datum plane of setting up the back optical line terminal OLT only needs simple universal tag forwarding module that the data that the user by the optical network unit ONU relaying sends are carried out the identification and the forwarding of universal tag, and the forwarding of this universal tag will be described in detail hereinafter.First administration module of optical line terminal OLT is connected with each functional module in the datum plane by internal management interface and agreement and control plane, be responsible for each module is managed, comprise policy control, parameter configuration, state information collection and report, alarm, charging etc.
Described optical network unit ONU is made up of control plane and datum plane, its control plane comprises: the second general signaling processing module, second administration module, datum plane comprises: the grouping sort module, the label mapping block, traffic policy adjusting module and formation equity dispatching module, optical network unit ONU belongs to subordinate status in whole system, all control decisions all must be asked to optical line terminal OLT, the service request that the user proposed is responsible for forwarding by optical network unit ONU, after user's request is admitted in the optical line terminal OLT decision, the second general signaling processing module by optical line terminal OLT sends signaling to optical network unit ONU and shows to connect and admit and inform the relevant parameters and the label value of distribution, each module of optical network unit ONU datum plane must be configured according to the parameters of admission confirmation, the sort module of wherein dividing into groups is classified to user grouping and the grouping that will belong to same application data stream is inserted in the independent formation buffer memory, the label mapping block is responsible for each grouping is carried out the mappings work of label then, the adjustment of after this dividing into groups to carry out via the traffic policy adjusting module flow makes it to meet the flow parameter of being consulted, and sends grouped data to optical line terminal OLT under the scheduling that is grouped in formation equity dispatching module of each application data stream at last.Second administration module of optical network unit ONU is connected with each functional module in the datum plane by internal management interface and agreement and control plane, is responsible for each module is managed.
First administration module of optical line terminal OLT connects by second administration module of signaling or NMP (as SNMP) and optical network unit ONU, assign the internal control order to optical network unit ONU, to each module of optical network unit inside manage, the collection report of parameter configuration and state information etc.First administration module of optical line terminal OLT also relies on external management interface and agreement (as SNMP) etc. with the connection of the management platform of core net, be responsible for giving unified network management platform with the status information reporting of internal system, the transmission of the management parameters of being correlated with, negotiation and configuration, and fault warning and charging etc.Organize content, instruction and the relevant parameter of second administration module of optical network unit ONU all obtains by signaling or NMP (as SNMP) first administration module from optical line terminal OLT inside, and is responsible for carrying out to first administration module of optical line terminal OLT inside the negotiation etc. of report, fault warning and the operational factor of running state information.
The universal tag forwarding module of optical line terminal OLT and the label mapping block of optical network unit ONU, adopt the universal tag switching technology to realize the fast tag forwarding of passive optical network data to core net, in EPON, use the packets headers label, time slot even wavelength (present stage does not adopt) are as label, formation system label forwarding, the packets headers label is used to discern the unit of granularity minimum, be used to distinguish each application data stream, foundation is based on the label switched path of stream, all label switched paths based on stream that belong to same optical network unit ONU converge at the optical network unit ONU place, be nested into label switched path based on the time slot label, the time slot label is used to identify the absolute time (time started and concluding time or transmission length) of the up transmission of optical network unit ONU herein, upstream data is transmitted to optical line terminal OLT by optical network unit ONU, all belong to the data flow of an optical network unit ONU to optical line terminal OLT according to the time slot tag recognition, and use the application of packets headers label identification optical network unit ONU inside to flow, user data is after arriving optical line terminal OLT, need not to carry out packets headers and check the contour level function, only needing the fixed label forwarding strategy of basis to transmit fast gets final product, efficiency of transmission and transmission speed have been improved, downlink data still sends according to broadcast type, with existing PON technology type seemingly, passive optical network based on generalized multiprotocol label switching (GMPLS) protocol mainly uses time division multiplexing mode at present, but can be smoothly transitted into following mode, promptly use the label forwarding path of wavelength as label based on wavelength division multiplexing.
The present invention adopts the core control protocol of GMPLS agreement as PON, form unified general controls and management platform with the following GMPLS that uses as the automatic optical exchange network ASON of intelligent control protocol, automatically optical exchange network ASON is by introducing the distribution according to need on time that the GMPLS control protocol realizes Internet resources in optical transfer network, thereby realization Intellectualization of Optical Network, improve Network Transmission and control efficiency, reduce management cost, in PON, introduce GMPLS as control core and management agreement, can realize intellectuality control and management equally to the PON internal resource, the more important thing is by GMPLS as tie, realized from Access Network to unified Based Intelligent Control and management platform based on the metro core net of automatic optical exchange network ASON, realized the seamless link of Access Network and core net, comprise the unified resource configuration, unified transmission control, unified tactical management, the unified network planning and unified network optimization management, thereby improve service quality, improve network operation efficient, reduce management and operating cost.
Optical line terminal OLT of the present invention and optical network unit ONU adopt the control plane of GMPLS agreement and integrated service intserv model, the operational mode that data service face separates, the developing direction of future network is control plane and data service planar separation (logical separation or physical separation), present stage at GMPLS PON is adopted the logical separation pattern, be that control information and data are transmitted in same physical channel (time slot), the effect of control plane is to make the control full automation of user's service request and network, avoided under manually-operated complexity and the efficient, control plane separates with datum plane to make, user's signaling request by control plane before service is set up is served, the service provider can and distribute the demand that as much as possible satisfies the user by unified MRP, guarantee the service quality of existing business simultaneously, and assurance network operation state is steady, Control on Communication message and the controlled function of all GMPLS PON are all finished by the signalling module of control plane, after connecting foundation, control plane carries out the configuration of parameter to the module on data plane, classification of Data is mainly finished on the data service plane, operations such as processing and forwarding, improved network operating efficiency, the function that chain of command is finished is control plane and datum plane to be carried out the management of macroscopic view by internal management interface.
First of optical line terminal OLT of the present invention and optical network unit ONU, the second general signaling processing module, adopt RSVP RSVP and expansion thereof control signaling as GMPLS PON, PON technology different from the past uses special-purpose control signaling mechanism only to be used for the control of PON interior signaling, GMPLS PON uses general resource reservation signaling protocol RSVP can finish all relevant signaling controlled function that comprise teleservice request and PON Control on Communication as signaling protocol, RSVP RSVP itself is not only as RSVP, but also be used for user's service request, the request of universal tag and distribution, PON Control on Communication etc., the user uses RSVP RSVP to initiate service request in GMPLS PON, optical network unit ONU is responsible for request is transmitted to optical line terminal OLT, optical line terminal OLT allows the control decision whether to admit this request through management and access after receiving request, if admit then reserve corresponding resource, and distribute its general forwarding label, set up the universal tag switching path, in addition, owing among the PON some special controlled function are arranged, as automatic discovery, registration and range finding etc., and RSVP RSVP has easy autgmentability as a kind of clear transport protocol, therefore the controlled function of PON can be carried to finish the PON controlled function by RSVP RSVP too.
An optical line terminal OLT of the whole GMPLS PON of the present invention system, a plurality of optical network unit ONU, the broadband passive optical distribution network can be considered to the edge device of service provider's core net, all optical network unit ONU belong to subordinate status in GMPLS PON, all communication activity all are subjected to the control of optical line terminal OLT, therefore the edge router function of core net can be integrated in the PON equipment, wherein optical line terminal OLT plays the center controlled function, optical network unit ONU is then specifically carried out the order of optical line terminal OLT, the function of edge router comprises, signaling control, insert and allow control, packets headers is checked analysis, divide group categories, formation equity dispatching and label switched path are set up, restriction Route Selection etc., optical line terminal OLT is responsible for handling all complicated control plane functions, comprise signaling control, insert and allow control and route and management function, and optical network unit ONU is specifically responsible for all complicated data plane functions of processing, comprise that packets headers checks analysis, divide group categories, formation equity dispatching and label switched path foundation etc., the implementation complexity that has disperseed equipment like this, reduce service provider's equipment cost, and simplify control and management complexity, improve overall network performance.
Whole system of the present invention adopts the service quality of integrated service (IntServ) improvement to single Business Stream, in the relatively limited Access Network of resource, need carry out effective resource control to each Business Stream, comprise the distribution of buffer memory and bandwidth, could guarantee single Business Stream can access sufficient service and not influence each other, by introducing integrated service, each Business Stream can connect to the optical line terminal OLT request, allow to connect after the control module admittance through inserting, connect foundation back GMPLS PON and then all set up independently label switched path for each stream, carry out the distribution of label by the first general signaling processing module signaling protocol, each traffic packets is entering optical network unit ONU after undue group categories module is selected the grouping of specific Business Stream, and be that it distributes independent buffer queue, carry out the mapping and the interpolation of label via the label mapping block, flow by guaranteeing each Business Stream based on the traffic policy adjusting module that leaks bucket mechanism steadily and meet negotiation parameter then, grouping at last enters formation equity dispatching module and use the formation equity dispatching device of sharing based on general processor (GPS) between the formation under each Business Stream, make each Business Stream obtain minimum assurance bandwidth like this, and guarantee the time delay under the end-to-end worst case, require strong business such as VoIP and IPTV significant for real-time.
The present invention can use unified management platform with the local core net of service provider, in Access Network, introduce general many label switching protocols, make Access Network and the local core net of service provider are united, undertaken by a unified management platform, comprise link management, resource management, traffic statistics and charging etc.
Whole system of the present invention adopts based on encapsulation of simple PON link (SPDL) form and simple medium access control protocol, GMPLS PON has adopted a kind of packet encapsulation of SPDL efficiently form, and support label forwarding, utilize the main mode of universal tag as application and optical network unit ONU under the identification grouping, such advantage is the packaging efficiency that has improved grouping, and can well support label forwarding, improve the entire system performance, simplify the control complexity, corresponding medium access control protocol also obtains simplifying, the grouping that belongs to single optical network unit ONU sends according to the time slot label of distributing, and OLT also carries out the time slot tag recognition according to the time slot label of being distributed to optical network unit ONU, the grouping that belongs to single application can well be supported clean culture by the identification of packets headers label, multicast and broadcast type send.
The present invention has the following function that passive optical network technique in the past can't provide: (1) merges Access Network and the local core net of service provider closely, unified Based Intelligent Control and management platform is provided, unified resource is distributed, management strategy, improve resource utilization, raise the management level, reduce system operation cost.(2) provide universal tag forwarding fast, the label exchange is the main exchanging form of future network, can be by label in lead-in surface in connectionless the Internet architecture to connection performance, accelerate packet forward speed, improve QoS, simplify network control, optimized allocation of resources is improved overall performance of network.(3) provide unified signaling system RSVP, not only make the user can use the RSVP in the Already in ustomer premises access equipment and operating system to carry out service request based on the signaling of RSVP RSVP, and in system of the present invention and the corresponding router device in the data transfer path, all RSVP there is good support, unified signaling system like this makes does not need complicated signaling translation conversion when the user asks end-to-end service, improve service request efficient and accuracy, accelerated the time that service is set up.(4) in EPON, introduced connection-oriented characteristic by generalized multiprotocol label switching (GMPLS) protocol GMPLS, particularly by supporting integrated service IntServ, make and in EPON, realized management and resource allocation each Business Stream, this has great importance for the relatively limited Access Network environment of resource, make and to have guaranteed the service that can be guaranteed of each Business Stream by each Business Stream is effectively managed, can guarantee its end-to-end worst case time delay for the strict business of delay performance.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention
Fig. 2 is the optical line terminal OLT structured flowchart
Fig. 3 is the optical network unit ONU structured flowchart
Fig. 4 is simple passive optical network link encapsulation format and byte definition schematic diagram
Fig. 5 is an optical network unit internal bandwidth scheduler
Fig. 6 is the label switched path schematic diagram for the present invention
Fig. 7 is system label switched path identification schematic diagram of the present invention
Embodiment
As shown in Figure 1, overall structure schematic diagram of the present invention, comprise: an optical line terminal OLT 1, a plurality of optical network unit ONU 2, broadband passive optical distribution network 3, between an optical line terminal OLT 1 and a plurality of optical network unit ONU 2, link to each other by broadband passive optical distribution network 3, it is characterized in that, optical line terminal OLT 1 and optical network unit ONU 2 are as the edge router in service provider's core net 4 generalized multiprotocol label switching (GMPLS) protocol GMPLS territories, be connected by communication link with GMPLS router other in the core net 4, optical line terminal OLT 1 is separately as integrated service intermediate router in the system, it is in leading position, all communication activity are by optical line terminal OLT 1 control, optical network unit 2 is separately as integrated service entrance router in the system, it belongs to subordinate status, the optical network unit ONU 2 concrete orders of carrying out optical line terminal OLT 1.
Whole system of the present invention can be considered to the edge device of the local core net 4 of service provider, and user's data is relayed to core net, is responsible for transmission by core net again.The function of edge router comprises that signaling control, access allow control, packets headers to check analysis, branch group categories, formation equity dispatching and label mapping, traffic policy adjustment, label switched path foundation, restriction Route Selection etc.
As shown in Figure 2, the structured flowchart of optical line terminal OLT 1, its control plane and data service planar separation, wherein control plane comprises: general signaling processing module 5, insert and allow control module 6, administration module 7, routing module 8, datum plane has universal tag forwarding module 9, the general signaling processing module 5 that service of being sent by user or optical network unit ONU 2 or control request at first enter control plane carries out analyzing and processing, the control that relates to system's control and other services is directly handled by the signalling module of expansion, the service of relating to admits the message of control and parameter to transfer to insert to allow control module 6 decisions whether to admit this request, insert and allow module 6 to insert the calculating of permission control algolithm accordingly according to the resource situation of resource situation of Access Network own and core net, core net does not have corresponding resource if Access Network has enough resources, also must send service request to core net by general signaling processing module 5 and routing module 8, finally return if service is admitted and to confirm to the user and inform that relevant every being used for dispose the parameter of optical network unit ONU 2 each module of datum plane and be distributed to the label value that this is connected, service connects the datum plane of setting up back optical line terminal OLT 1 only needs 9 pairs of data by user's transmission of optical network unit ONU 2 relayings of simple universal tag forwarding module to carry out the identification and the forwarding of universal tag.
As shown in Figure 3, the structured flowchart of optical network unit ONU 2, its control plane and data service planar separation, wherein control plane comprises: general signaling processing module 10, administration module 11, datum plane has grouping sort module 12, label mapping block 13, traffic policy adjusting module 14 and formation equity dispatching module 15, the service request that the user proposed is responsible for forwarding by optical network unit ONU 2, after user's request is admitted in optical line terminal OLT 1 decision, general signaling processing module 5 by optical line terminal OLT 1 sends signaling to optical network unit ONU 2 and shows to connect and admit and inform the relevant parameters and the label value of distribution, each module of optical network unit ONU 2 datum planes must be configured according to the parameters of admission confirmation, 12 pairs of user grouping of the sort module of wherein dividing into groups are classified and the grouping that will belong to same application data stream is inserted in the independent formation buffer memory, label mapping block 13 is responsible for each grouping is carried out the mappings work of label then, after this divide into groups to make it to meet the flow parameter of being consulted, send grouped data to optical line terminal OLT 1 under the scheduling that is grouped in formation equity dispatching module 15 of each application data stream at last via the adjustment that traffic policy adjusting module 14 carries out flow.
As shown in Figure 4, simple passive optical network link encapsulation format of the present invention, only provide the frame structure of i optical network unit ONU among the figure, wherein the sending time slots of overall optical network element ONU2 comprises a frame presynchronization head (looking different physical layer parameters is provided with), be used to adjust the lock in time and the received power adjustment of optical line terminal OLT, each sending time slots comprises several frames, each frame structure comprises length field (2 byte) as shown in the figure, protocol type territory (2 byte), label/ONU id territory (4 byte), frame head verification (2 byte), data field (0-4096 byte) and optionally frame check (4 byte).Wherein label/ONU id domain structure as shown in the figure, keep territory (20 bit) and ONU id territory (8 bit) descending comprising, up label field (20 bit) and the reservation territory (8 bit) of comprising.Data field comprises several independently IP groupings, but need have identical label.This frame structure has well adapted to the operation of native system, supports the label exchange, and has very high packaging efficiency.
As shown in Figure 5, the structure of optical network unit ONU internal bandwidth scheduler, this structure has demonstrated fully the characteristics of connection-oriented service model.Most external at scheduler is a queue dispatcher based on priority, be respectively and guarantee that service class, controllable load class and best effort class business provide priority service, wherein each class all has the buffer queue of a special use to be used for the user grouping of buffer memory different business classification.Between the single application of each service type, use Weighted Fair Queuing device WFQ to provide based on the packet scheduling that flows.Business Stream enters through classification after entering optical network unit ONU 2 and is to wait for service in the independent buffer memory that each stream is provided with, and after adjusting through the monitoring of label mapping and flow, Business Stream enters scheduler according to the flow parameter of negotiation and serves.Weighted Fair Queuing device WFQ is based on the scheduler that general processor is shared the GPS class, for meeting the traffic flow assignment weight coefficient φ that leaks the bucket parameter, according to the service speed of weight coefficient and whole scheduler, can provide the minimum fair service that guarantees for the Business Stream f of each access
And can guarantee its worst case end-to-end time delay
The largest buffered amount that it consumed also can be calculated as accurately
Has important function for the strong business of delay requirement such as VoIP and IPTV.
As shown in Figure 6, passive optical network system label switched path schematic diagram of the present invention, user grouping is distributed corresponding stream of packets label switched path after flowing to optical network unit ONU2, all stream of packets that belong to unified optical network unit ONU converge at optical network unit ONU 2 places, be nested into the sending time slots label switched path that optical line terminal OLT 1 is distributed to optical network unit ONU 2, the time slot tag path that receives at optical line terminal OLT 1 place can be selected the label forwarding action according to the packet label head of single Business Stream then by quick identification.Through after the optical line terminal OLT 1, all Business Streams that belong to optical line terminal OLT 1 converge, and are nested into other system label switched paths that enter core net 4, comprise time slot, wavelength and fiber port.
As shown in Figure 7, passive optical network system label switched path identification schematic diagram of the present invention, each stream of packets label switched path
2 places converge the input time slot label switched path in optical network unit ONU
Whole transmission time slot carries out addressing and identification according to the time slot label, optical link unit OLT1 needs to inform each optical network unit ONU 2 its sending time slots label before each transmission circulation beginning, optical network unit ONU 2 is opened physical layer equipment according to sending time slots and is carried out data and send, and optical link unit OLT1 receives after the data according to the current time slots label
Optical network unit ONU 2 under the identification, according to each Business Stream of stream of packets tag recognition of each Business Stream, each Business Stream can be by unique system label in the whole system so then
Identification.
Claims (9)
1, a kind of passive optical network based on generalized multiprotocol label switching (GMPLS) protocol, comprise: an optical line terminal OLT (1), a plurality of optical network unit ONU (2), broadband passive optical distribution network (3), between an optical line terminal OLT (1) and a plurality of optical network unit ONU (2), link to each other by broadband passive optical distribution network (3), it is characterized in that, optical line terminal OLT (1) and optical network unit ONU (2) are as the edge router in service provider's core net (4) generalized multiprotocol label switching (GMPLS) protocol GMPLS territory, be connected by communication link with GMPLS router other in the core net (4), optical line terminal OLT (1) is separately as integrated service intermediate router in the system, it is in leading position, all communication activity are controlled by optical line terminal OLT (1), optical network unit (2) is separately as integrated service entrance router in the system, it belongs to subordinate status, and optical network unit ONU (2) is specifically carried out the order of optical line terminal OLT (1);
Described optical line terminal OLT (1) is made up of control plane and datum plane, its control plane comprises: general signaling processing module (5), access allow control module (6), administration module (7), routing module (8), and datum plane has universal tag forwarding module (9);
Described optical network unit ONU (2) is made up of control plane and datum plane, its control plane comprises: general signaling processing module (10), administration module (11), and datum plane comprises: grouping sort module (12), label mapping block (13), traffic policy adjusting module (14) and formation equity dispatching module (15);
The administration module (7) of optical line terminal OLT (1) is set up management by signaling or NMP with the internal control module (11) of optical network unit ONU (2) and is connected, internal control module (11) to optical network unit ONU (2) is assigned the internal control order, each module inner to optical network unit ONU (2) manages, the collection report of parameter configuration and state information, optical line terminal OLT (1) administration module (7) also relies on external management interface and agreement with the connection of the management platform of core net, be responsible for giving unified network management platform with the status information reporting of internal system, the transmission of the management parameters of being correlated with, consult and configuration, and fault warning and charging; Organize content, instruction and the relevant parameter of the administration module (11) of optical network unit ONU (2) all obtains from the inner administration module (7) of optical line terminal OLT (1) by signaling or NMP, and is responsible for carrying out the negotiation of report, fault warning and the operational factor of running state information to the administration module (7) of optical line terminal OLT (1).
2, passive optical network based on generalized multiprotocol label switching (GMPLS) protocol according to claim 1, it is characterized in that, carry out analyzing and processing after the service request of general signaling processing module (5) reception from user or optical network unit ONU (2) in the control plane of described optical line terminal OLT (1), transferring to then to insert allows control module (6) decision whether to admit this request, insert and allow control module (6) to insert the calculating of permission control algolithm accordingly according to the resource situation of resource situation of Access Network own and core net, core net does not have corresponding resource if Access Network has enough resources, then must continue to send service request and finally return to core net and confirm to the user by routing module (8), service connects the foundation back and is responsible for data processing by optical line terminal OLT (1) datum plane, and only need carry out the identification and the forwarding of universal tag to the data that the user sends by simple universal tag forwarding module (9), administration module (7) is connected with each functional module in the datum plane by internal management interface and agreement and control plane, be responsible for each module is managed, comprise: policy control, parameter configuration, alarm, charge, state information collection and report.
3, passive optical network based on generalized multiprotocol label switching (GMPLS) protocol according to claim 1, it is characterized in that, the general signaling processing module (10) of the control plane of described optical network unit ONU (2) is responsible for initiating service request and receive from the signaling of optical line terminal OLT (1) to instruct to optical line terminal OLT (1), and the datum plane module of optical network unit ONU (2) is carried out parameter configuration by internal interface, the grouping sort module (12) of the datum plane of optical network unit ONU (2) is classified to grouping and the grouping that will belong to same application data stream is inserted in the independent formation buffer memory, label mapping block (13) is responsible for each grouping is carried out the mappings work of label then, the adjustment of after this dividing into groups to carry out via traffic policy adjusting module (14) flow makes it to meet the flow parameter of being consulted, send grouped data to optical line terminal OLT (1) under the scheduling that is grouped in formation equity dispatching module (15) of last each application data stream, administration module (7) is connected with each functional module in the datum plane by internal management interface and agreement and control plane, is responsible for each module is managed and parameter configuration, and responsible state information collection, report.
4, according to claim 2 or 3 described passive optical networks based on generalized multiprotocol label switching (GMPLS) protocol, it is characterized in that, the universal tag switching technology that adopts universal tag forwarding module (9) and label mapping block (13) realizes the fast tag forwarding of passive optical network data to core net (4), in EPON, use the packets headers label, time slot or wavelength are as label, formation system label forwarding, the packets headers label is used to discern the unit of granularity minimum, be used to distinguish each application data stream, foundation is based on the label switched path of stream, all that belong to same optical network unit ONU (2) are located to converge in optical network unit ONU (2) based on the label switched path of stream, be nested into label switched path based on the time slot label, upstream data is transmitted to optical line terminal OLT (1) by optical network unit ONU (2), all belong to the application data stream of an optical network unit ONU (2) to optical line terminal OLT (1) according to the time slot tag recognition, and use the packets headers label to discern the inner application data stream of optical network unit ONU (2), user data is after arriving optical line terminal OLT (1), only need to transmit fast according to fixed label forwarding strategy, downlink data still sends according to broadcast type.
5, according to claim 2 or 3 described passive optical networks based on generalized multiprotocol label switching (GMPLS) protocol, it is characterized in that, general signaling processing module (5,10) adopt RSVP RSVP and expansion thereof control signaling as GMPLSPON, RSVP RSVP itself is not only as RSVP, also be used for user's service request, the request of universal tag and distribution and PON Control on Communication, the user uses RSVP RSVP to initiate service request in whole system, optical network unit ONU (2) is responsible for will asking to transmit to optical line terminal OLT (1), optical line terminal OLT (1) allows the control decision whether to admit this request through management and access after receiving request, if admit then reserve corresponding resource, and distribute its general forwarding label, set up the universal tag switching path, owing among the PON automatic discovery is arranged, the controlled function of registration and range finding is carried the controlled function of PON to finish the PON controlled function by RSVP RSVP.
6, according to claim 2 or 3 described passive optical networks based on generalized multiprotocol label switching (GMPLS) protocol, it is characterized in that, optical line terminal OLT (1), optical network unit (2), adopt the service quality of integrated service improvement to single application data stream, introduce integrated service, each application data stream all connects to optical line terminal OLT (1) request, allow to connect after control module (6) admittance through inserting, connect foundation back whole system and then all set up independently label switched path for each stream, carry out the distribution of label by general signaling processing module (5) signaling protocol, being grouped in of each application data stream enters optical network unit ONU (2) after undue group categories module (12) is selected the grouping of specific application data stream, and be that it distributes independent buffer queue, carry out the mapping and the interpolation of label via label mapping block (13), then the flow by guaranteeing each application data stream based on the traffic policy adjusting module (14) that leaks bucket mechanism steadily and meet negotiation parameter, grouping at last enters formation equity dispatching module (15) and uses between the formation under each application data stream based on the shared formation equity dispatching device of general processor.
7, according to claim 1 or 2 or 3 described passive optical networks based on generalized multiprotocol label switching (GMPLS) protocol, it is characterized in that, optical line terminal OLT (1) and optical network unit ONU (2) adopt GMPLS agreement and integrated service intserv model desired control plane, the operational mode that datum plane separates, control plane separates with datum plane, user's control plane signalling interworking by optical line terminal OLT (1) and optical network unit ONU (2) before service is set up carries out service request and negotiation, the service provider allows control to confirm whether admit according to inserting, guarantee the steady of network operation state, all Control on Communication message and controlled function are all finished by the signalling module of control plane, after connecting foundation, datum plane is then finished classification of Data, handle and transmit and operate, control plane carries out dynamic-configuration by internal interface to the data plane.
8, passive optical network based on generalized multiprotocol label switching (GMPLS) protocol according to claim 1, it is characterized in that, optical line terminal OLT (1), a plurality of optical network unit ONU (2), the passive optical network that broadband passive optical distribution network (3) is formed, edge device as service provider's core net (4), the edge router function of core net (4) is integrated in the PON equipment, the function of edge router comprises: signaling control, insert and allow control, packets headers is checked analysis, divide group categories, formation equity dispatching and label switched path are set up, the restriction Route Selection, optical line terminal OLT (1) is responsible for handling all complicated control plane functions, comprise signaling control, insert and allow control and route and management function, and optical network unit ONU (2) is specifically responsible for and is handled all complicated data plane functions, comprises that packets headers checks analysis, divide group categories, formation equity dispatching and label switched path are set up.
9, passive optical network based on generalized multiprotocol label switching (GMPLS) protocol according to claim 1, it is characterized in that, optical line terminal OLT (1), a plurality of optical network unit ONU (2), the passive optical network that broadband passive optical distribution network (3) is formed, employing is based on simple PON link SPDL form encapsulation and simple medium access control protocol, SPDL packet encapsulation form is supported label forwarding, utilize the mode of universal tag as application data stream and optical network unit ONU (2) under the identification grouping, the grouping that belongs to single optical network unit ONU (2) is by optical network unit ONU (2) time slot tag recognition, the grouping that belongs to single application data stream is discerned by the packets headers label, adopt simple medium access control, support clean culture, multicast and broadcast type send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100279311A CN100512287C (en) | 2005-07-21 | 2005-07-21 | Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100279311A CN100512287C (en) | 2005-07-21 | 2005-07-21 | Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1725756A CN1725756A (en) | 2006-01-25 |
| CN100512287C true CN100512287C (en) | 2009-07-08 |
Family
ID=35924998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100279311A Expired - Fee Related CN100512287C (en) | 2005-07-21 | 2005-07-21 | Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100512287C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407707C (en) * | 2006-03-03 | 2008-07-30 | 北京大学 | Network configuration for loading high-speed data business and trans mitting method |
| CN101039159A (en) * | 2006-03-13 | 2007-09-19 | 上海交通大学 | Method for transmitting data of passive optical network data link layer |
| CN101047453B (en) * | 2006-04-25 | 2011-04-20 | 华为技术有限公司 | Managing method and system for optical network unit or optical network terminal |
| CN101425944B (en) * | 2007-10-30 | 2011-01-19 | 中兴通讯股份有限公司 | Method for service bearing in G bit passive optical network system |
| CN101459574B (en) * | 2007-12-14 | 2013-03-20 | 华为技术有限公司 | Network deployment method, network system and IP node |
| CN101686190B (en) * | 2008-09-24 | 2013-01-30 | 华为技术有限公司 | Method for mapping data transmission, device and system thereof |
| CN101729384B (en) * | 2008-10-15 | 2013-04-17 | 华为技术有限公司 | Method, device and system for switching label |
| CN101729372B (en) * | 2008-10-29 | 2012-10-03 | 华为技术有限公司 | Method and system for transmission of message in optical communication system and optical line terminal |
| CN102340392B (en) * | 2010-07-26 | 2014-02-05 | 杭州华三通信技术有限公司 | Method and system for improving reliability of service in passive optical network system |
| CN102307200A (en) * | 2011-09-06 | 2012-01-04 | 杭州开鼎科技有限公司 | Method for packaging 376.1 protocol/645 protocol in Ethernet frame |
| CN102571585A (en) * | 2012-01-12 | 2012-07-11 | 绍兴电力局 | Solution for multi-layer unified communication platform of digital substation |
| US9001672B2 (en) * | 2012-07-27 | 2015-04-07 | Alcatel Lucent | System, method and apparatus conforming path cost criteria across multiple ABRs |
| GB2510012B (en) * | 2012-10-28 | 2015-06-10 | Lantiq Deutschland Gmbh | Method of packet encapsulation for multi-service operation from a distribution point |
| CN104956633B (en) * | 2013-11-25 | 2017-11-17 | 华为技术有限公司 | Optical line terminal, distribution dot element, system and data stream scheduling method |
| CN107332345B (en) * | 2017-07-04 | 2020-02-18 | 广东电网有限责任公司电力科学研究院 | Energy flow scheduling method of energy exchange equipment and energy exchange equipment |
| CN108365886B (en) * | 2018-02-13 | 2020-07-14 | 北京空间飞行器总体设计部 | Time division multiplexing inter-satellite network data storing and forwarding method |
| CN109104343B (en) * | 2018-09-30 | 2021-01-26 | 四川长虹电器股份有限公司 | Optimization method for PON fusion type gateway STB (set top box) equipment service establishment |
| CN112188328B (en) * | 2020-09-28 | 2023-04-07 | 酒泉钢铁(集团)有限责任公司 | System and method for realizing SDN + VXLAN based on GPON network scene |
| CN114501192A (en) * | 2020-11-11 | 2022-05-13 | 中兴通讯股份有限公司 | Service configuration method, optical network unit, optical line terminal and medium |
-
2005
- 2005-07-21 CN CNB2005100279311A patent/CN100512287C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 在基于GMPLS的无源光网络中支持端到端QoS. 郭勇，范戈.光通信研究，第6期. 2005 |
| 在基于GMPLS的无源光网络中支持端到端QoS. 郭勇，范戈.光通信研究，第6期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1725756A (en) | 2006-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100512287C (en) | Passive optical network system based on generalized multiprotocol label switching (GMPLS) protocol | |
| Sherif et al. | A novel decentralized Ethernet-based PON access architecture for provisioning differentiated QoS | |
| CN101005445B (en) | Method for mapping service flow to service transmission path and optical network terminal | |
| US7340169B2 (en) | Dynamic route discovery for optical switched networks using peer routing | |
| US7257120B2 (en) | Quality of service (QoS) based supervisory network for optical transport systems | |
| CN101771902B (en) | Method, system and device for allocating passive optical network uplink bandwidth | |
| Jung et al. | Centralized scheduling mechanism for enhanced end-to-end delay and QoS support in integrated architecture of EPON and WiMAX | |
| CN102821029A (en) | Multi-service bandwidth allocation method and device in passive optical network of Ethernet | |
| EP1863233B1 (en) | Service classification method and system for an optical network terminal | |
| CN108370270A (en) | Distribution method, device and the passive optical network of dynamic bandwidth | |
| Cauvin et al. | Common technical specification of the G-PON system among major worldwide access carriers | |
| Bouabdallah et al. | Resolving the fairness issues in bus-based optical access networks | |
| CN104427412B (en) | A kind of method and device that bandwidth map updates | |
| CN1592302A (en) | Method for realizing passive light network running and managing | |
| CN105959163A (en) | Passive optical interconnection network structure based on software definition and data communication method | |
| González-Ortega et al. | LOBS-H: an enhanced OBS with wavelength sharable home circuits | |
| CN107483141B (en) | Ethernet link method for building up and controller | |
| Angelopoulos et al. | An optical network architecture with distributed switching inside node clusters features improved loss, efficiency, and cost | |
| CN101741592A (en) | Method, device and system for managing GPON branch in multi-service transmitting network | |
| Segarra et al. | GPON scheduling disciplines under multi-service bursty traffic and long-reach approach | |
| CN101415014B (en) | Method, system and base station for ensuring QoS of GPON as 802.16 backhaul | |
| Ciceri et al. | Dynamic bandwidth allocation with multi-ONU customer support for ethernet passive optical networks | |
| Luo et al. | A QoS architecture of integrating GEPON and WiMAX in the access network | |
| Yan et al. | Integrated resource management framework in hybrid optical wireless networks | |
| CN1791097B (en) | Control method of RPF protocol applied in optical burst switching ring network based on WDM |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20120721 |