CN101123814B - Adjacent space multi-protocol tag switching network system and its processing method - Google Patents
Adjacent space multi-protocol tag switching network system and its processing method Download PDFInfo
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Abstract
The invention relates to a proximity space multi-agreement label exchange network system. The system includes a consumer layer and a proximity space network layer. The proximity space network layer consists of access nodes and transmitting nodes. A router on any access node or transmitting node includes a network edge router module and a label exchange router module. Both the network edge router module and the label exchange router module include a control plane and a transmitting plane. The control plane includes an air control unit and a ground control unit. The air control unit and the ground control unit alternate the control information through an air-ground signaling interface. The system adopts the mode of air-ground integrated cooperative processing which can better solve the contradiction between limited resources and capabilities of a proximity space aircraft node and the requirements of high performances and a plurality of functions. Besides, the invention also relates to a processing method of the proximity space multi-agreement label exchange network system.
Description
Technical field
The present invention relates to a kind of multi-protocol tag switching network system, the air-ground integrated multi-protocol tag switching network system of particularly a kind of near space; The invention still further relates to a kind of processing method of multi-protocol tag switching network system, the processing method of the air-ground integrated multi-protocol tag switching network system of particularly a kind of near space; Belong to the communications field.
Background technology
Along with the maturation of near space vehicle technology, the integrated design between networking between the near space aircraft and near space network and other networks (as space-based and ground network) becomes the focus of present near space communication system development.
The near space network is to be core node (hereinafter referred to as the near space node) with suspension devices such as dirigibles, utilize it to dispose flexibly, covering is bigger relatively, than characteristics such as satellite transmission delay are little, provides the network of regional data transmission trunking in a big way by networking.At present the demand to this network mainly concentrates on: 1. provide (QoS) data transport service that guarantees that has network service quality for integrated services such as voice, data, multimedias; 2. provide big capacity information passback data relaying for the aerial node of high speeds such as unmanned plane; 3. provide data relaying between vacant lot, absolutely empty subnet for a large amount of aerial mobile ad-hoc networks.
Along with the maturation of near space networking technology, the near space network also will become the part of global communication network, thus need realization and space-based, ground communication network effectively be connected and solve the utilization of resources problem.
At present, the technology that can select is an atm technology, IP technology and MPLS technology, the ability of the integrated service of providing service is provided atm technology, effective traffic engineering design can be provided, support bigger service bandwidth, but there is the agreement complexity, realizes the cost height,, do not support to have the defectives such as IP operation of QoS demand with the poor compatibility of present widely used IP-based internet (Internet).
Adopt the IP technology that seamless link with internet, ground (Internet) can be provided, and realize simply, but weak point is: the QoS that needs to solve Network guarantees and problem such as network traffic engineering.
The MPLS technology is the switching technology on a kind of IP of being based upon agreement basis, can with the IP network compatibility, in addition, have powerful traffic engineering ability again, can effectively improve network efficiency, guarantee professional quality of service requirement.
In similar space industry design (mainly being the mobile satellite communication network), for solve service quality and with the problem of ground compatibility, the scholar is attempting using for reference the MPLS switching technology on ground at present, forms the MPLS technology that is fit to satellite network.But, all can't be directly applied in the near space network with ground network with technological achievement that the difference of satellite network is studied present ground MPLS research and satellite IP/MPLS.
The near space network has been compared its particularity with ground network, be embodied in: 1) the near space aircraft is having strict requirement to communication payload aspect power consumption, the volume and weight, and a large amount of mobile nodes of near space network support, bearer traffic is big, professional frequent variations, and link layer and Network layer function need realize on same aircraft node, have the contradiction between low load-carrying ability and high switching performance and the multi-functional demand; 2) coverage of single near space aircraft node is bigger, and the business in the single node can solve by the link layer exchange, need not to relate to the exchange of network layer label; 3) need to support a large amount of high-speed mobile users that the Business Stream relative stability is poor; 4) Business Stream presents certain aggregation properties, but service priority and quality of service requirement difference are big, all kinds of QoS service guarantees need be provided, to provide high-quality service for some business especially, thereby need possess stronger separating capacity at Business Stream (it is thinner to need to transmit granularity, and the differentiation of traffic resource assignment strategy is stronger) and operational capacity.
Above characteristic has at first caused the distributed tags switching architecture based on controlling and driving of ground network standard not to be suitable for the near space information network.Because 1) this mode requires node to have complete autonomous routing function, and need move Label Distribution Protocol independently (because the required Routing Protocol of common link-state routing protocol (as OSPF) and distribution label binding information mates very poor) usually, possesses complicated controlled function, thereby to realize multi-functional and high-performance, will cause near space aircraft node complexity very high, common aircraft node is difficult to bear; 2) a large amount of control Signalling exchanges will take very big absolutely empty link circuit resource, and this problem is especially outstanding when needs carry out fine granularity control; 3) present controlling and driving strategy is difficult to provide fine-grained priority to be divided and Differentiated Services usually based on routing policy, is difficult to dynamically adjust link circuit resource and distributes, and is relatively poor to the operational capacity of data flow.But if adopt the mode of data-driven, except that high-performance and multi-functional node processing require still the Project Realization of near space vehicle is formed the big pressure, the unsettled relatively characteristics of the professional stream of near space information network also cause adopting data-driven to have bandwidth resources waste problem.
The near space network is compared with satellite network and still had difference, is embodied in: 1) the near space information network is less relatively at the spatial network node number of operation; Application region property is strong, and node space distributes more concentrated, and vacant lot is relative with absolutely empty time delay little; More fixing with the relative position relation on ground, basic network topology dynamic than satellite a little less than, near space vehicle is had a little less than the requirement of autonomous routing capabilities independently; 2) characteristics of near space information network have determined to provide the Large Volume Data relaying will be as one of main application trend of network, this will cause node and link circuit resource more nervous, the storage of node and computing capability and high performance requirements (high resource utilization, the service quality of all kinds of business of strict guarantee etc., low packet loss ratio etc.) contradiction is compared more outstanding with satellite network; 3) coverage of near space network is little than satellite, but need be for high-speed mobile users even mobile subnetwork provide the Various types of data junction traffic in a large number, having caused the mobile subscriber that access node often need take place repeatedly between service period switches, the whole Business Stream of network is brought bigger fluctuation, cause baneful influences such as node is congested, unstable networks easily.
Summary of the invention
A first aspect of the present invention is to provide a kind of adjacent space multi-protocol tag switching network system by some embodiment, to solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance.
A second aspect of the present invention is to provide a kind of adjacent space multi-protocol label exchange network device by other embodiment, to solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance.
A third aspect of the present invention is the processing method that a kind of adjacent space multi-protocol tag switching network system is provided by some embodiment again, to solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance.
A kind of adjacent space multi-protocol tag switching network system that some embodiment of a first aspect of the present invention provide is achieved in that this system comprises client layer and near space network layer, wherein, client layer is made up of user node, the near space network layer is made up of access node and forward node, router on any access node or the forward node includes network edge router module and LSR module, described network edge router module and LSR module all comprise control plane and Forwarding plane, control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface;
Wherein, described aerial control unit comprises label switched path state table maintenance module, label switched path state table, shared resource adjusting module, switching controls module, professional application/release processing module and vacant lot signaling interface, wherein, label switched path state table maintenance module and switching controls module return the relevant parameter and the occupation condition of label switched path to the label switched path state table, and the shared resource adjusting module carries out shared resource allocation and scheduling according to the request of business application/release processing module and the information of label switched path state table;
Described terrestrial contr comprise network state information storehouse, flow planning module, based on service quality routing module, the path of traffic engineering generate control module, business information administration module, empty signaling information interface, wherein, network state information storehouse, flow planning module and business information administration module provide parameter information for the service quality routing module based on traffic engineering, based on the service quality routing module of traffic engineering the label switched path information that generates are delivered to the path and generate control module.
Control plane comprises aerial control unit and terrestrial contr in the said system, this system adopts the mode of air-ground integrated associated treatment, utilize computing capability advantage and the air network information and the sensitive advantage of business information on ground, can solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Other embodiment of a second aspect of the present invention specifically comprise:
The network edge router module is used to realize that the control path of network edge node generates and professional the forwarding;
The LSR module is used to realize that the control path of internal nodes of network generates and professional the forwarding;
Wherein, described network edge router module and LSR module all comprise control plane and Forwarding plane, wherein, control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface;
Wherein, described aerial control unit comprises label switched path state table maintenance module, label switched path state table, shared resource adjusting module, switching controls module, professional application/release processing module and vacant lot signaling interface, wherein, label switched path state table maintenance module and switching controls module return the relevant parameter and the occupation condition of label switched path to the label switched path state table, and the shared resource adjusting module carries out shared resource allocation and scheduling according to the request of business application/release processing module and the information of label switched path state table;
Described terrestrial contr comprises network state information storehouse, flow planning module, the service quality routing module based on traffic engineering, path generation control module and business information administration module; Described service quality routing module based on traffic engineering comprises predicted flow rate function generation module, flow cost generation module and multiple constraint route search module; Described predicted flow rate function generation module is according to the traffic forecast sequence that generates link from the information of forecasting of described flow planning module, described flow cost generation module is according to generating the total flow cost from the business information in described network state information storehouse and the traffic forecast sequence of link, and described multiple constraint route search block search satisfies the service transmission path of the optimal flux cost of QoS parameter constraint.
Said apparatus realized the associated treatment mode of vacant lot one by the control plane in network edge router module and the LSR module, solved the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Some embodiment again of a third aspect of the present invention specifically comprise:
Step 1, network status initialization comprise: aerial node and neighbor node form the area information state alternately, and pass to ground, form the whole network state information on ground;
Step 211, user initiate professional application, hold consultation about resource requirement and qos requirement with access node;
Whether step 212, judgement application are transmitted to flow professional mode, if application is transmitted in the mode of the business of flowing, then execution in step 213; If application is transmitted with non-stream trafficwise, then execution in step 214;
Step 213, deliver to the ground routing module by the vacant lot interface and carry out route and calculate, and by ground centralized control generation pass, execution in step 3 then;
Step 214, the priority mapping of carrying out, and divide into high-priority service and low priority traffice according to priority class, for the business of high priority, execution in step 215, for low priority traffice, execution in step 216;
Step 215, needs be applied for to ground, set up by Ground Control, after the inlet tag edge router distributed the inlet label, the user sent data to tag edge router with the form of IP bag, tag edge router adds corresponding inlet label according to the IP header packet information, and execution in step 3 then;
Step 216, at first start the shared resource scheduler module, preferentially use the shared resource of certain label switched path,, then start the ground routing calculation module and carry out new label switched path and calculate and generate if can not generation pass;
The type of service that step 311, judgement are transmitted, if the business of forwarding stream is professional, then execution in step 312, if Best-Effort service, then execution in step 313, if forwarding is professional fast, then execution in step 314;
Step 312, be that business adds the inlet label, and transmit according to special stream label and to transmit professionally that execution in step 4 then by the user;
Step 313, employing are inserted and are transmitted, and execution in step 4 then;
Step 314, be divided into high and low two priority according to type of service field, for high priority, then execution in step 315, if low priority, then execution in step 316;
Step 315, set up label switched path, judged whether that according to source IP address new business arrives, if there is new business to arrive, then execution in step 317, if the arrival of no new business, then execution in step 318;
Step 316, carry out middle forwarding equivalence class mapping according to QoS parameter, judged whether that according to source IP address new business produces, if there is new business to produce, then transmit according to the maximum shared resource of existing label switched path, deliver to the data drive control module simultaneously and carry out rate detection, if detection peak speed is higher than the current resource that takies, then need independent applying label switching path, if far below the current resource that takies, then service marker can be adjusted business for the label switched path resource, and indicate the mean flow rate of shared service, if the generation of no new business, then execution in step 318;
Step 317, at first deliver to data drive control module stores unit, start the timer statistical packages simultaneously and arrive Mean Speed, when speed is basicly stable according to the label switched path of this speed application respective resources, after label switched path is set up, transmit the data of storage earlier, transmit the data service of follow-up arrival again, execution in step 4 then;
Step 318, look into the FEC Label Forwarding Information Base, add the inlet label and transmit according to source IP address;
Step 4, service ending and path discharge.
Adopt the mode of air-ground integrated associated treatment, can solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the schematic diagram of the adjacent space multi-protocol tag switching network system of some embodiments of the present invention;
Fig. 2 is the structural representation of the adjacent space multi-protocol label exchange network device of some embodiments of the present invention;
Fig. 3 is the structural representation of the tag edge router module of some embodiments of the present invention;
Fig. 4 is the structural representation of the terrestrial contr of some embodiments of the present invention;
Fig. 5 is the structural representation of the vacant lot information interaction module of some embodiments of the present invention;
Fig. 6 is the flow chart of the adjacent space multi-protocol tag switching network system processing method of some embodiments of the present invention.
Embodiment
Fig. 1 is the schematic diagram of the adjacent space multi-protocol tag switching network system of some embodiments of the present invention, as shown in Figure 1, this system comprises client layer and near space network layer, wherein, client layer is made up of user node, the near space network layer is made up of access node and forward node, router on any access node or the forward node includes network edge router module and LSR module, above-mentioned router-module all comprises control plane and Forwarding plane, and control plane comprises aerial control unit and terrestrial contr.
User node is for needing to initiate the user of the professional application of multiprotocol label switching (mpls), and these users can comprise fixed-line subscriber, low, middling speed mobile subscriber's (hand-held, vehicle mobile equipment), high-speed mobile user's (guided missile, unmanned plane etc.); Type of service can comprise: all kinds of stream business and IP groupings such as voice, data, multimedia.
Access node is carried out the access function of user node, realizes operations such as user node is mutual, path computing, path generation initiation, FEC mapping, is equivalent to MPLS network edge router (LER); Can bear by nodes such as near space vehicle (dirigible, aerostatics), ground station, relaying unmanned planes.Forward node is carried out the label forwarding function, is equivalent to LSR (LSR).But because the near space network has certain particularity, do not have clear and definite edge boundary, thereby above-mentioned access node all needs to carry out forwarding capability as network, insert with the differentiation of transmitting only at certain Business Stream; Because near space vehicle, relaying unmanned plane node limited in one's ability, the realization of their LER functions will be born jointly by ground control centre, near space node and mobile subscriber three again.
This shows, router on each access node or the forward node all can be realized the function of network edge router and the function of LSR, network edge router and LSR module include control plane and Forwarding plane, above-mentioned control plane comprises aerial control unit and terrestrial contr, this system adopts the mode of air-ground integrated associated treatment, can solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Fig. 2 is the structural representation of the adjacent space multi-protocol label exchange network device of some embodiments of the present invention, as shown in Figure 2, this device comprises the LSR module that the control path generates and business is transmitted that is used to realize the network edge router module that the control path generates and business is transmitted of network edge node and is used to realize internal nodes of network.
Wherein, network edge router module and LSR module all comprise control plane and Forwarding plane, control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface.
Terrestrial contr utilizes the computing capability advantage on ground according to the network state information of gathering and the traffic prediction information of collection, adopts the professional forward-path LSP of fine-grained optimization searching algorithm computation, and concentrates the control path to generate.
Aerial control unit utilizes the sensitive advantage of air network information and business information when corresponding ground control command generates label switched path, some low priority traffice is implemented dynamically to transmit fast, realizes making full use of of network bandwidth resources.
Said apparatus realized the associated treatment mode of vacant lot one by the control plane in network edge router module and the LSR module, solved the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Fig. 3 is the structural representation of the tag edge router module of some embodiments of the present invention, as figure
Shown in 3, tag edge router (LER) module comprises control plane, Forwarding plane and Label Forwarding Information Base, and control plane and Forwarding plane carry out Business Processing by Label Forwarding Information Base; Control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface.
Aerial control unit comprises label switched path state table maintenance module, label switched path state table, shared resource adjusting module, switching controls module and professional application/release processing module.
Wherein, LSP state table maintenance module is made up of LSP state detection module and LSP state table update module.The LSP state age information that LSP state table update module is set up according to this node in the state table proposes to survey requirement to LSP state detection information module, and upgrading the LSP state table according to surveying feedback, this node of serving as reasons of the list item in the LSP state table is initiated relevant parameter and the occupation condition of the LSP that sets up; LSP state detection information module requires to send LSP state information detection packet to LSP according to surveying, and the result is fed back to LSP state table update module.
The shared resource scheduler module, operation shared resource scheduling strategy is implemented the shared resource distribution according to the request of business application/release module to low-priority data stream and unsettled low rate data streams.
Shared resource dynamic dispatching strategy is mainly used in the lower business of priority, by adding the detecting module of a LSP on the node aloft, the mode of this module utilization transmission detection packet obtains quality of service conditions and the occupation condition of current LSP, obtain the idling-resource quantity of current LSP, and utilize of the forwarding of the idling-resource of high-priority service as shared resource realization lower-priority data.Simultaneously,, improved resource utilization, reduced the forwarding cost of low priority traffice by the optimization utilization of shared resource with the dynamic mapping realization shared resource of business.
On near space vehicle, adopt shared resource dynamically to adjust strategy, the dynamic service information and the network information of utilizing the aircraft front end to grasp strengthen the quick reaction capability of network to changing, realize effective utilization of idling-resource, improve bandwidth availability ratio, alleviate the nervous problem of resource.Simultaneously, the strategy of this resource-sharing has been alleviated the bandwidth resources waste problem that causes based on the data-driven strategy, has saved label resources, has alleviated the storage burden of near space vehicle.
Professional application/releases processing module is used for finishing with professional mutual, comprises that professional application is handled and business release processing capacity.Professional application processing capacity is made up of network layer business service parameter negotiation module, business information administrative unit, professional application processing policy; Acceptance is from the business application of user node and Forwarding plane data-driven module, and initiate the LSP application to shared resource scheduler module or ground routing module according to the service parameter that consult to obtain, and set up the result according to LSP and increase label forwarding list item, informing business node initial labels is to Forwarding plane data drive control module feedback acknowledgment information.The professional processing capacity that discharges is accepted to discharge application from the service resources of user node and Forwarding plane data-driven module, the mode that takies resource according to business is delivered to SRM or ground and is made corresponding resource and discharge decision, and according to results modification Label Forwarding Information Base, LSP state table and the business information administrative unit of feedback.
The switching controls module comprises link switchover control module between user link switching controls module and net.The LER switching is mainly realized by user link switching controls module, this module is finished the handover request that receives the user, initiate handover request earthward, and exchange handover information according to response results with switching destination node, control discharges functions such as this node and relevant link resource.
Aerial control unit also comprises the network layer resource management module, this module is made up of link information acquisition module and network node/link resource statistics administration module, and the link information acquisition module is by obtaining information such as link break-make, time delay, link remaining bandwidth resource alternately with near space neighbor node cycle information; Network node/link resource statistics administration module is added up this node resource and is regularly sent to the whole network resource state information storehouse on ground with link-state information by vacant lot signaling information interface, realizes the renewal of network state information.Simultaneously, this module is also being born the statistical estimation work of this node current residual resource, and responds the resource reservation request on ground according to assessment result.
This shows, aerial control unit mainly is when corresponding ground control command generates label switched path, utilize the sensitive advantage of air network information and business information, low priority traffice is implemented dynamically to transmit fast, realize making full use of of network bandwidth resources.
Terrestrial contr comprises the whole network resource state information storehouse, flow planning module, the service quality routing module based on traffic engineering, path generation control module and business information administration module.
Wherein, the information that gather according to each network node in the whole network resource state information storehouse generates the whole network node and link-state information, comprise network topological information, chain-circuit time delay, resource occupation information, node throughput, average queue length and other node link cost, for routing module provides basic network state information.
The flow planning module is made up of information acquisition module, resource occupation prediction module and traffic policy generation module, by obtaining the flight path and the information of forecasting of high speed unmanned plane investigation node, and the information of hiving off of air mobile node (cluster information), group mean service traffics, the basic QOS parameter of group, the information such as planning of hiving off, business initiation and resource occupying situation to next period are carried out volume forecasting and planning, and the predicted flow rate reference information of routing decision is provided for routing module.
The storage of business information administration module is from the business application QoS parameter information of business application/release module, as the input of routing module.
QoS routing module based on traffic engineering, service request according to node traffic application/release module, utilize network state information and predicted flow rate reference information, the LSP of QoS parameter request is satisfied in generation, simultaneously, reach the Internet resources maximum using as far as possible, the LSP information that generates is delivered to the path generate control module.
This module is utilized the predictability of near space business, adopted QoS routing policy based on traffic engineering and traffic forecast information, on the basis of satisfying the business service requirement, alleviate the network performance deterioration that a large amount of high-speed mobile users cause, optimized network traffics.
The path generates control module and comprises resource reservation module, label distribution and distribution control module and tag information base.This module is reserved signaling according to the LSP information that routing module generates to the parallel unicast resource of interdependent node, initiates the downstream by label distribution and distribution control module and concentrate label binding and distributed intelligence after the resource reservation that receives all interdependent nodes is confirmed.
Forwarding plane mainly comprises professional classification and mapping block, signaling processing module, data drive control module and forwarding queue scheduler module, coordinate to realize control by ground and aerial control unit to Forwarding plane, its only aloft finish on the node to from user node and with classification, identification, scheduling and the forwarding capability of the Business Stream of the aerial node of near space information network internet.
This shows that terrestrial contr mainly is according to the network state information of gathering and the traffic prediction information of collection, utilizes the computing capability advantage on ground, adopt the professional forward-path LSP of fine-grained optimization searching algorithm computation, and concentrate the control path to generate.
In a word, this module adopts the mode of air-ground integrated associated treatment, can solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
Fig. 4 is the structural representation of the terrestrial contr of some embodiments of the present invention, as shown in Figure 4, terrestrial contr comprises the whole network resource state information storehouse, flow planning module, the service quality routing module based on traffic engineering, path generation control module and business information administration module.Service quality routing module based on traffic engineering comprises predicted flow rate function generation module, flow cost generation module and multiple constraint route search module.Predicted flow rate function generation module is according to the traffic forecast sequence that generates link from the information of forecasting of flow planning module, flow cost generation module is according to generating the total flow cost from the business information in network state information storehouse and the traffic forecast sequence of link, and multiple constraint route search block search satisfies the service transmission path of the optimal flux cost of QoS parameter constraint.
Wherein,, obtain being carved with during future the probability of the professional transmission of flow, form the link traffic forecasting sequence for every paths according to the measurable information of high speed business (comprising professional initiation time, access node, predicted flow rate etc.) that the flow planning module obtains.
Flow cost generation module is set up call business duration model, and calculating predicted flow rate cost, flow cost generation module generates current network link flow cost according to the state information of the whole network state information bank, add up the network traffics and the LSP number of current process bar link, weighting generates the flow cost of current network; And then generate total flow cost on any link by predicted flow rate cost and the weighting of present flow rate cost; At last, multiple constraint route search module adopts the optimization searching algorithm search to satisfy the service transmission path of the optimal flux cost of qos parameter constraint.
This module is utilized the predictability of near space business, adopted QoS routing policy based on traffic engineering and traffic forecast information, on the basis of satisfying the business service requirement, alleviate the network performance deterioration that a large amount of high-speed mobile users cause, optimized network traffics.
Fig. 5 is the structural representation of the vacant lot information interaction module of some embodiments of the present invention, as shown in Figure 5, the vacant lot interactive information all transmits by the vacant lot signaling interface, vacant lot signaling information interface comprises information classifying unit, information storage unit and interaction mode memory cell, and the vacant lot interactive information mainly comprises following several types:
The resource state information of node/link that the network layer resource management module of aerial node will obtain alternately feeds back to the resource state information storehouse on ground and realizes real-time update.
Aerial business application/release processing module initiates professional basic demand earthward according to the application processing policy and request is set up in the path.
The path on ground generate resource reservation/label distribution distribution module in the control module according to the routing information that generates to each aerial node and the professional resource obligate information of certain application of ground node clean culture along the path.
Network state collection/the resource management module of aerial node confirms that by resource reservation signaling feeds back to the resource reservation/label distribution distribution module on ground with resource obligate information.
The path on ground generate resource reservation/label distribution distribution module in the control module according to the resource reservation situation to adopting explicit way to initiate label binding and distributed intelligence, label of each nodes records oneself and downstream label on the way from the downstream with path order.
Aerial business application/release processing module discharges processing policy according to corresponding business and initiates service resources release request earthward.
The service management module on ground sends service resources to aerial node and discharges the affirmation signaling
Carry out the vacant lot information interaction by above-mentioned vacant lot signaling interface, adopt ground to concentrate the mode of macro-control and aerial node front end flexible to come all kinds of business of associated treatment.
Fig. 6 is the flow chart of the adjacent space multi-protocol tag switching network system processing method of some embodiments of the present invention, and as shown in Figure 6, this method mainly comprises:
Step 1, network status initialization;
Step 4, service ending and path discharge.
Wherein, step 1 is specially: aerial node and neighbor node form the area information state alternately, and pass to ground, form the whole network state information on ground.
Above-mentioned steps 3 is specially:
The type of service that step 311, judgement are transmitted, if the business of forwarding stream is professional, then execution in step 312, if do one's best (BE) business, then execution in step 313, if forwarding professional (FE) fast, then execution in step 314;
Step 312, be that business adds the inlet label by the user, and according to special stream label transmit transmit professional;
Step 313, employing are inserted and are transmitted;
Step 314, be divided into high and low two priority according to COS (tos) field, for high priority, then execution in step 315, if low priority, then execution in step 316;
Step 315, set up label switched path, judged whether that according to source IP address new business arrives, if there is new business to arrive, then execution in step 317, if the arrival of no new business, then execution in step 318;
Step 316, carrying out middle forwarding equivalence class (FEC) according to QoS parameter hints obliquely at, judged whether that according to source IP address new business produces, if there is new business to produce, then transmit according to the maximum shared resource of existing label switched path, deliver to the data drive control module simultaneously and carry out rate detection, if detection peak speed is higher than the current resource that takies, then need independent applying label switching path, if far below the current resource that takies, then service marker can be adjusted business for the label switched path resource, and indicate the mean flow rate of shared service, if the generation of no new business, then execution in step 318;
Step 317, at first deliver to data drive control module stores unit, start the timer statistical packages simultaneously and arrive Mean Speed, when speed is basicly stable according to the label switched path of this speed application respective resources, after label switched path is set up, transmit the data of storage earlier, transmit the data service of follow-up arrival again;
Step 318, look into the FEC Label Forwarding Information Base, add the inlet label and transmit according to source IP address.
The service ending mode of near space network mainly contains in the above-mentioned steps 4: the 1) business of directly setting up by the network user to the application of near space network, and such business is initiated application by the user, initiates the suspension of service or end signal by the user equally; 2) come from the IP operation of other internet (as the sky base net), the initiation of such business with end up being burst at random, directly transmit data, need not to the network application.
Based on the processing method of adjacent space multi-protocol tag switching network system, adopt the mode of air-ground integrated associated treatment, can solve the contradiction between near space vehicle node resource, the limited in one's ability and multi-functional requirement of high-performance preferably.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. adjacent space multi-protocol tag switching network system, this system comprises client layer and near space network layer, wherein, client layer is made up of user node, the near space network layer is made up of access node and forward node, it is characterized in that: the router on any access node or the forward node includes network edge router module and LSR module, described network edge router module and LSR module all comprise control plane and Forwarding plane, control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface;
Wherein, described aerial control unit comprises label switched path state table maintenance module, label switched path state table, shared resource adjusting module, switching controls module, professional application/release processing module and vacant lot signaling interface, wherein, label switched path state table maintenance module and switching controls module return the relevant parameter and the occupation condition of label switched path to the label switched path state table, and the shared resource adjusting module carries out shared resource allocation and scheduling according to the request of business application/release processing module and the information of label switched path state table;
Described terrestrial contr comprise network state information storehouse, flow planning module, based on service quality routing module, the path of traffic engineering generate control module, business information administration module, empty signaling information interface, wherein, network state information storehouse, flow planning module and business information administration module provide parameter information for the service quality routing module based on traffic engineering, based on the service quality routing module of traffic engineering the label switched path information that generates are delivered to the path and generate control module.
2. adjacent space multi-protocol tag switching network system according to claim 1, it is characterized in that: described service quality routing module based on traffic engineering comprises predicted flow rate function generation module, flow cost generation module, multiple constraint route search module, wherein, predicted flow rate function generation module is according to the traffic forecast sequence that generates link from the information of forecasting of flow planning module, flow cost generation module is according to generating the total flow cost from the business information in network state information storehouse and the traffic forecast sequence of link, and multiple constraint route search block search satisfies the service transmission path of the optimal flux cost of QoS parameter constraint.
3. adjacent space multi-protocol label exchange network device is characterized in that described device comprises:
The network edge router module is used to realize that the control path of network edge node generates and professional the forwarding;
The LSR module is used to realize that the control path of internal nodes of network generates and professional the forwarding;
Wherein, described network edge router module and LSR module all comprise control plane and Forwarding plane, wherein, control plane comprises aerial control unit and terrestrial contr, and aerial control unit and terrestrial contr carry out the mutual of control information by the vacant lot signaling interface;
Wherein, described aerial control unit comprises label switched path state table maintenance module, label switched path state table, shared resource adjusting module, switching controls module, professional application/release processing module and vacant lot signaling interface, wherein, label switched path state table maintenance module and switching controls module return the relevant parameter and the occupation condition of label switched path to the label switched path state table, and the shared resource adjusting module carries out shared resource allocation and scheduling according to the request of business application/release processing module and the information of label switched path state table;
Described terrestrial contr comprises network state information storehouse, flow planning module, the service quality routing module based on traffic engineering, path generation control module and business information administration module; Described service quality routing module based on traffic engineering comprises predicted flow rate function generation module, flow cost generation module and multiple constraint route search module; Described predicted flow rate function generation module is according to the traffic forecast sequence that generates link from the information of forecasting of described flow planning module, described flow cost generation module is according to generating the total flow cost from the business information in described network state information storehouse and the traffic forecast sequence of link, and described multiple constraint route search block search satisfies the service transmission path of the optimal flux cost of QoS parameter constraint.
4. the processing method of an adjacent space multi-protocol tag switching network system is characterized in that this method comprises:
Step 1, network status initialization comprise: aerial node and neighbor node form the area information state alternately, and pass to ground, form the whole network state information on ground;
Step 2, professional application generate with the path, may further comprise the steps:
Step 211, user initiate professional application, hold consultation about resource requirement and qos requirement with access node;
Whether step 212, judgement application are transmitted to flow professional mode, if application is transmitted in the mode of the business of flowing, then execution in step 213; If application is transmitted with non-stream trafficwise, then execution in step 214;
Step 213, deliver to the ground routing module by the vacant lot interface and carry out route and calculate, and by ground centralized control generation pass, execution in step 3 then;
Step 214, the priority mapping of carrying out, and divide into high-priority service and low priority traffice according to priority class, for the business of high priority, execution in step 215, for low priority traffice, execution in step 216;
Step 215, needs be applied for to ground, set up by Ground Control, after the inlet tag edge router distributed the inlet label, the user sent data to tag edge router with the form of IP bag, tag edge router adds corresponding inlet label according to the IP header packet information, and execution in step 3 then;
Step 216, at first start the shared resource scheduler module, preferentially use the shared resource of certain label switched path,, then start the ground routing calculation module and carry out new label switched path and calculate and generate if can not generation pass;
Step 3, the professional forwarding and route maintenance may further comprise the steps:
The type of service that step 311, judgement are transmitted, if the business of forwarding stream is professional, then execution in step 312, if Best-Effort service, then execution in step 313, if forwarding is professional fast, then execution in step 314;
Step 312, be that business adds the inlet label, and transmit according to special stream label and to transmit professionally that execution in step 4 then by the user;
Step 313, employing are inserted and are transmitted, and execution in step 4 then;
Step 314, be divided into high and low two priority according to type of service field, for high priority, then execution in step 315, if low priority, then execution in step 316;
Step 315, set up label switched path, judged whether that according to source IP address new business arrives, if there is new business to arrive, then execution in step 317, if the arrival of no new business, then execution in step 318;
Step 316, carry out middle forwarding equivalence class mapping according to QoS parameter, judged whether that according to source IP address new business produces, if there is new business to produce, then transmit according to the maximum shared resource of existing label switched path, deliver to the data drive control module simultaneously and carry out rate detection, if detection peak speed is higher than the current resource that takies, then need independent applying label switching path, if far below the current resource that takies, then service marker can be adjusted business for the label switched path resource, and indicate the mean flow rate of shared service, if the generation of no new business, then execution in step 318;
Step 317, at first deliver to data drive control module stores unit, start the timer statistical packages simultaneously and arrive Mean Speed, when speed is basicly stable according to the label switched path of this speed application respective resources, after label switched path is set up, transmit the data of storage earlier, transmit the data service of follow-up arrival again, execution in step 4 then;
Step 318, look into the FEC Label Forwarding Information Base, add the inlet label and transmit according to source IP address;
Step 4, service ending and path discharge.
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| CN102461273B (en) | 2009-06-10 | 2014-07-09 | 苹果公司 | Providing an indicator of presence of a first access network that is capable of interworking with a second access network |
| CN103108030B (en) * | 2012-12-24 | 2016-04-13 | 上海思华科技股份有限公司 | Based on the multiple service supporting method of application |
| CN105611650B (en) * | 2015-12-22 | 2018-10-23 | 河北远东通信系统工程有限公司 | The method of application layer module and transport layer module coupling between reduction multinode |
| CN109257089A (en) * | 2018-09-11 | 2019-01-22 | 北京航空航天大学 | Applied to the remote low elevation angle link transmission method for facing sky monitoring system on a large scale |
| CN109327255B (en) * | 2018-09-26 | 2023-01-24 | 中国民航管理干部学院 | Routing method and system for unmanned aerial vehicle ad hoc network |
| CN112637065B (en) * | 2021-03-05 | 2021-05-28 | 南京中孚信息技术有限公司 | Distributed processing system and method based on label addressing calculation |
| CN115426031B (en) * | 2022-11-03 | 2023-01-24 | 中国电子科技集团公司第五十四研究所 | Centralized and distributed combined space-based network routing control system |
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| CN1558621A (en) * | 2003-10-30 | 2004-12-29 | ����� Լ������� | Method for recovering route in all-purpose multiple protocol label switched network |
| CN1677938A (en) * | 2004-03-31 | 2005-10-05 | 华为技术有限公司 | Method for realizing label switching path network |
| CN101022304A (en) * | 2007-03-16 | 2007-08-22 | 北京航空航天大学 | Mobile satellite multiprotocol tag exchange network system and operating method thereof |
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| CN1558621A (en) * | 2003-10-30 | 2004-12-29 | ����� Լ������� | Method for recovering route in all-purpose multiple protocol label switched network |
| CN1677938A (en) * | 2004-03-31 | 2005-10-05 | 华为技术有限公司 | Method for realizing label switching path network |
| CN101022304A (en) * | 2007-03-16 | 2007-08-22 | 北京航空航天大学 | Mobile satellite multiprotocol tag exchange network system and operating method thereof |
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