CN102164092A - Method and system for guaranteeing service quality of integrated identification network - Google Patents
Method and system for guaranteeing service quality of integrated identification network Download PDFInfo
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Abstract
The invention discloses a method and a system for guaranteeing the service quality of an integrated identification network. In the method, available network resources are obtained by a source terminal in the mode of one-by-one link detection; according to a detection result, a decisions whether resources are sufficient and how many resources need to be reserved are made; and after reservation is finished, a reservation result is notified to a destination terminal, and the source terminal and the destination terminal finish data transmitting on a built route. The method can provide various types of service with service quality assurance for users and has the advantages of good expandability, strong robustness and the like.
Description
Technical field
The present invention relates to technical field of the computer network, relate in particular to a kind of integrated marked network method for ensuring service quality and system.
Background technology
The Internet has obtained extensive extensive use through the fast development of decades, has obtained great success, becomes the enormous motivation that promotes social progress.But along with enriching constantly of the continuous expansion of network size, Network, the Internet has also exposed a lot of problems, for example can not well satisfy the demand of the multiple service in following internet, but can not well realize fail safe, reliability and the survivability etc. of the Internet.For this reason, the countries in the world researcher has actively developed the research to following the Internet architectural framework.Integrated marked network is exactly the typical case's representative in the Next Generation Internet architectural framework.Integrated marked network comprises service layer and Netcom's layer two parts, and wherein service layer finishes the unified description and the management of various services, realizes the generalization of service, and finishes the transfer of data of service; Netcom's layer provides platform for the network insertion of diversification, for services such as data, voice, video provide incorporate network communication platform, and is the certain service quality of service guarantees such as voice and video, thereby has supported pervasive service effectively.
The various network service business that provided by operator or third party value-added service provider are provided in the pervasive service of integrated marked network, contained data, services (as the transmission of text data), audio service is (as VoIP, online voice conversation), Video service is (as real-time video flowing transmission, online television), following comprehensive multimedia service (as the real-time multimedia flow transmission on the PDA terminal) etc.At the user who is linked into integrated marked network by various access technologies, integrated marked network Netcom layer can provide has the polymorphic type service that certain service quality guarantees end to end.
3.1 service quality guarantees general introduction
The Internet design designs for transfer of data at first, but continuous development along with the Internet, multiple real time business appears in the Internet, and this real time business has proposed certain requirement to service quality, three kinds of more representational service quality therefore successively occurred and has guaranteed mechanism.
(1) integrated service (InterServ)
The IntServ service model is that the mode with resource reservation realizes service quality guarantee, basic thought be for each bar stream its from the source end to destination all reserve certain bandwidth resources on through each node on the path.After this flow transmission finishes, remove reserved path again, discharge reserved resource.RSVP is the core protocol of integrated service, and basic principle is to know all nodes of its process for a data circulation, and consulting also for this reason with node, data flow provides resource reservation.Terminal utilizes RSVP message to propose to finish the Internet resources (as bandwidth and buffer size etc.) that the data transmission must keep to network, also determine simultaneously along the transmission process strategy of each node of transfer path, thereby realization is to the control one by one of each Business Stream.
Intserv model needs all routers to handle the signaling message of each stream on the control path, safeguards the path status and the resource reservation state of each stream, and carries out classification, scheduling and buffer management based on stream on data path.
This model can provide absolute guaranteed QoS end to end, have higher flexibility and service class assurance preferably, but it is because big based on resource reservation, scheduling and the cache management overhead of stream, need software and hardware is carried out great amount of investment, with and problem such as extensibility, make it be difficult in the Internet core network, obtain practical application, can only in edge network, use.
(2) Differentiated Services (DiffServ)
The DiffServ service model is a kind of service quality guarantee system that can implement extendible classification of service on the internet by the development of Intserv model.Basic thought is at network boundary data flow to be carried out simple classification by qos requirement, and different classes is transmitted according to different forwarding characteristics in core net.Particularly, border router according to the stream of data flow regulation to the data flow that will enter network classify, shaping, it is polymerized to different aggregate flows.This gathering information stores is called DS mark (Differentiated Services Code Point:DSCP) in DS (Differentiated Services) tag field (field) of each IP header.Core net DSCP according to header when the IP bag is transmitted in scheduling selects the scheduling of extra fine quality to transmit service.
Compare the IntServ service model, DiffServ has simplified the work of core net, and the complex process that each grouping is carried out has been pulled to network edge.Owing to do not need the network intermediate node to manage the stream mode that each is being worked, therefore be with good expansibility, and on router, realize easily, be a kind of good quality of service controlling models.But DiffServ can only provide the service quality of relative priority level to guarantee that can't paddle one's own canoe fully provides well quality of service architecture end to end.
(3) multiprotocol label switching (mpls)
MPLS (Multiprotocol Lable Switch) technology is that several companies based on Cisco company put forward, and original intention is the IP route technology advantage separately for switching technology that fully utilizes network core and network edge.The initial design target is that the exchange velocity with the second layer is incorporated into the 3rd layer.This exchanged form based on label allow router when doing to transmit decision only based on simple label, rather than the route querying of complexity is done in based target IP address.
The main feature of MPLS is to have introduced label switch system.When packet entered the MPLS network, network will be fixed for it distributes short and small a, length, has local significance, and the label that can be different from other information flows encapsulates this IP bag as the MPLS head.In the MPLS network, all forwarding mechanisms are all realized according to this label.This label tells data are handled and transmitted to the router on the forward-path how, deblocking MPLS head when leaving the MPLS network.
Compare and integrated service and Differentiated Services, MPLS has improved exchange velocity greatly, has higher flexibility and extensibility, can combine with mechanism such as traffic engineering and realize that service quality guarantees.But the shortcoming that himself is also arranged owing to introduced extra tag head, has strengthened packet overhead, make agreement itself complicated, and the cost of arranging net is higher, inserts cumbersome.
3.2 service quality assurance in the integrated network territory
Quality of service architecture is centralized at the beginning of design in the territory of integrated marked network, by (the Universal QoS Manager of the Service Quality Management device in the territory, UQoSM) Internet resources in the management domain, as every link bandwidth etc., terminal sends request service quality to UQoSM and guarantees message, and UQoSM is by calculating corresponding Internet resources and distributing to terminal.This framework has structurally adopted control and management plane and data route planar separation, has reduced the expense of router, has strengthened network extensibility; Adopt admission control scheme, can effectively guarantee the service quality of access service stream; Adopted the method for global flow label in the territory, the stream under the grouping bag of the same service quality rating of differentiation that can be thinner than existing Differentiated Services; Simultaneously saved the route querying time greatly, and do not needed the support of complex protocol not need can not increase grouping and unwrap pin for the grouping bag adds extra field.The schematic diagram of service quality assurance in the integrated network domains of Fig. 1.
The control of integrated network service quality system and management design.The control and management aspect of integrated network service quality system mainly comprises Management Units such as integrated network Service Quality Management device UQoSM, realizes the processing and the control of the relevant signaling of integrated network Service Quality Management process.UQoSM has mainly realized following function: the maintenance and management function.Resource in topology information in management and the maintenance field and the territory effectively, and the control signaling of send being correlated with is to the router in the network.Access control function.Adopt admission control scheme, can effectively guarantee to have inserted and applied for the service quality of the Business Stream of QoS.DGFL (Domain Global Flow Label) management function.Be global flow label DGFL value in the distribution of flows territory that application QoS guarantees, be used to carry out quick forwarding based on stream label.Path computation function.Go out the optimal path that can satisfy its QoS demand according to available resources in the territory for this data-flow computation, and the transmission resource allocation signaling is configured realization QoS route to the backbone network router.
The exchange and the routing Design of integrated network service quality system.Netcom's aspect of integrated network comprises route-exchanging devices such as GSR and ASR, and major function is to have realized having routing and the forwarding that QoS guarantees for data flow.When source end request obtained certain service quality assurance, request message just was sent to UQoSM.UQoSM makes the decision of whether accepting this QoS request according to the information that the resource management information bank provides.After request is admitted, Netcom's aspect adopts the method for global flow label in the territory to carry out route, i.e. corresponding stream label DGFL that the overall situation is unique of stream in the integrated network territory, and by UQoSM calculating QoS path, signaling about resource allocation information is sent to ASR and GSR, thereby on ASR and GSR, carry out corresponding resource reservation.When terminal receives after permission that ASR returns sends message, data transmission blocks just begins to send packet.After data flow arrived ASR, ASR carried out shaping to data stream, searches the DGFL information table, gave packet marking DGFL stream label, entered queue scheduling module etc. again and was sent to GSR.After data flow arrives GSR, search fast according to the DGFL field of packet header earlier and transmit, realize the quick forwarding of packet on the QoS path.Therefore, Netcom's aspect has mainly realized following function: the rate-shaping function.After packet arrives GSR, enter Shaping Module and carry out rate-shaping, the speed of data flow is meeted the requirements.The DGFL mark function.Packet just enters into DGFL value mark module and carries out mark through behind the Shaping Module.The queue scheduling function.What the queue scheduling module adopted is fair weighted formation algorithm, and being divided into joins the team and go out team operated in two steps.The data forwarding function.When data entered into forwarding module, GSR just needed the DGFL field of reading of data packet head, searched the routing iinformation of corresponding DGFL value again in transmitting according to its value, realized transmitting fast.Timer function.The clauses and subclauses of transmitting in the kernel will be come renewal regularly by timer.
Though this service quality guarantees mechanism and can guarantee for terminal realizes certain QoS, but the pattern that adopts is centralized, when the quantity of network insertion terminal increases, when perhaps entire domain is big, UQoSM will become the bottleneck that restriction service quality guarantees, is unfavorable for that service quality guarantees the autgmentability and the robustness of framework.
Summary of the invention
The purpose of this invention is to provide a kind of integrated marked network method for ensuring service quality and system, the terminal that guarantees with request service quality in the integrated marked network provides quality assurance end to end, thereby better support pervasive service at Netcom's layer, realize having the polymorphic type service transmission that certain service quality guarantees.
On the one hand, the invention provides a kind of integrated marked network method for ensuring service quality, comprise the steps: request step, destination obtains service from the source end, and the request source end provides service quality to guarantee; Detection steps, hop-by-hop is surveyed the available resources of every link on each route between source end and the destination, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys; Feedback step, arrive the couple in router ASR link to each other with destination when detection packet after, all can satisfy the requirement of service as if the resource of each bar link on this route, then the route that meets the demands is fed back to described source end as result of detection; Reserve step, described source end carries out resource reservation according to described result of detection at every link of this route, and at each router the corresponding priority level formation is set; Transmitting step, after resource reservation was finished, source end and destination were in the enterprising line data transmission of the route of finishing resource reservation.
Above-mentioned integrated marked network method for ensuring service quality, also comprise the steps: recycling step behind the preferred described transmitting step, after described source end is finished transfer of data, described destination proposes to cancel request to the source end, after the source end receives that this cancels request, reclaim the resource that is reserved on every link; Confirm to reclaim the step that finishes, after last-hop Router receives that resource reclaims message and finishes recovery, send acknowledge character ACK, show that the resource recovery finishes to destination.
Above-mentioned integrated marked network method for ensuring service quality, also comprise the steps: the denial of service step after the preferred described detection steps: if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request that certain mass guarantees.
On the other hand, the present invention also provides a kind of integrated marked network service quality to guarantee system, and described system comprises request module, detecting module, feedback module, reservation module and transport module.Wherein, request module is used for destination and obtains service from the source end, and the request source end provides service quality to guarantee; Detecting module is used for the available resources that on each route between source end and destination hop-by-hop is surveyed every link, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys; Feedback module is used for after detection packet arrives the couple in router ASR link to each other with destination, all can satisfy the requirement of service as if the resource of each bar link on this route, then the route that meets the demands is fed back to described source end as result of detection; The reservation module is used for described source end and carries out resource reservation according to described result of detection at every link of this route, and at each router the corresponding priority level formation is set; Transport module is used for resource reservation finish after, source end and destination are in the transmission of the enterprising line data of the route of finishing resource reservation.
Above-mentioned integrated marked network service quality guarantees system, also is connected with recycling module behind the preferred described transport module in turn and confirms to reclaim the module that finishes.Wherein, recycling module is used for after described source end is finished transfer of data, and described destination proposes to cancel request to described source end, and the source end reclaims the resource that is reserved on every link after receiving that this cancels request; Confirm to reclaim the module that finishes and be used for after last-hop Router receives that resource reclaims message and finishes recovery, sending acknowledge character ACK, show that the resource recovery finishes to destination.
Above-mentioned integrated marked network service quality guarantees system, also be connected with the denial of service module behind the preferred described detecting module, this module is used for: if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request that certain mass guarantees.
In terms of existing technologies, the improved end-to-end quality of service of the present invention guarantees scheme, the end-to-end quality of service that can effectively solve in the integrated marked network guarantees problem, given up the Service Quality Management device UQoSM in the centralized service quality assurance mechanism, broken away from the dependence of terminal to the Service Quality Management device, reduced of the danger of malice terminal, had advantages such as extensibility is good, strong robustness the core net critical server.
Description of drawings
Fig. 1 is the flow chart of steps of the integrated marked network method for ensuring service quality of the present invention embodiment;
Service quality assurance configuration diagram in the integrated network domains of Fig. 2;
Fig. 3 obtains a schematic diagram with real-time service of certain service quality assurance for destination D to source end S request;
The schematic diagram that Fig. 4 reclaims for resource;
The integrated marked network service quality of Fig. 5 guarantees the structured flowchart of system embodiment;
The integrated marked network service quality of Fig. 6 guarantees the structured flowchart of another embodiment of system.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more clear, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Integrated marked network method for ensuring service quality embodiment
With reference to Fig. 1, Fig. 1 comprises the steps: request step S110 for the flow chart of steps of the integrated marked network method for ensuring service quality of the present invention embodiment, and destination obtains service from the source end, and the request source end provides service quality to guarantee; Detection steps S120, source end hop-by-hop on each route between source end and the destination is surveyed the available resources of every link, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys; Feedback step S130 after detection packet arrives the ASR that destination links to each other, if the resource of each bar link all can satisfy the requirement of service on this route, then feeds back to described source end with the route that meets the demands as result of detection; Reserve step S140, described source end carries out resource reservation according to described result of detection at every link of this route, and at each router the corresponding priority level formation is set; Transmitting step S150, after resource reservation was finished, source end and destination were in the enterprising line data transmission of the route of finishing resource reservation.
In the present embodiment, the mode that the source end is surveyed by link by link system obtains available network resources, abundance and needs are reserved the decision of how many resources to make resource according to result of detection, will announce to destination reserving the result after reservation is finished, source end and destination just can be finished transfer of data on the good path of foundation.This method can provide the service of the polymorphic type with quality assurance for the user, has advantages such as extensibility is good, robustness is good.This method improvement existing service quality guarantee mechanism, realized that distributed end-to-end quality of service guarantees.
Further, after transmitting step S150, can also comprise recycling step and confirm to reclaim the step that finishes.Wherein, recycling step is specially, and after described source end was finished transfer of data, described destination need propose to cancel request to described source end, and the source end reclaims and is reserved in reserved resource on every link after receiving that this cancels request; Confirm to reclaim the step that finishes and be specially, after last-hop Router receives that resource reclaims message and finishes recovery, send acknowledge character ACK, show that the resource recovery finishes to destination.
In addition, if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request of certain mass assurance.
With reference to Fig. 2, service quality assurance configuration diagram in the integrated network domains of Fig. 2.This framework comprises: Service Quality Management device (UQoSM) 24 and mapping server 25 in terminal 21, terminal 22, a plurality of integrated network couple in router ASR, integrated network broad sense switch router GSR (A and B), authentication center 23, the territory.Wherein, Service Quality Management device (UQoSM) 24 and mapping server 25 in authentication center 23, the territory are in the Network Management aspect, and a plurality of integrated network couple in router ASR and a plurality of integrated network broad sense switch router GSR are in Netcom's aspect.Dotted line representative data forward-path among the figure.
Below be example just with the communication between source end and the destination, by three kinds of situations, the method that guarantees based on the service quality of resource reservation that specifies is described.Destination goes for a real time business with certain mass assurance of source end.Can not satisfy two kinds of situations when asking with resource in the time of can being divided into resource in the network this moment and satisfying request, when the resource in the network can satisfy the destination request, ASR makes the decision-making of this service of access, and when resource can not satisfy request, ASR just made the decision-making of this time of refusal service.
Situation one: Internet resources can satisfy the request of service
Step 1: destination proposes the QoS application to the source end when request is served, after the source end is received this request, send resource detection message, resource detection message can route exploration network along the source end to destination on each node available bandwidth (herein, do not consider the mapping process and the verification process of packet, the tentation data bag all is the reasonable data of validated user, has obtained the mapping relations between AID and the RID, and the authentication by certificate server).
Step 2: if bandwidth can satisfy user's demand, then detection packet arrives last-hop Router, promptly behind the ASR that destination inserted, can return the detection success message, because separate mapping mechanism, this message can not directly be sent to the source end, can only be by the network node forwarded hop-by-hop to the source end.
Step 3: the source end will send RESV, and this message is the same with probe message, ergodic source end each node in the route of destination, and the notice router is this service configuration formation, and bandwidth reserved.After last-hop Router is received RESV and is finished configuration, can send an ACK message to destination, show that resource reservation finishes, this moment, service just can begin in real time.
Step 4: according to route of having set up and the good resource of reservation, the source end sends data to destination.
Step 5: after service was finished, destination need propose to cancel request to the source end, and the source end will directly send resource and reclaim message after receiving that this cancels request, reclaim the resource that is reserved in each network node.
Step 6: after last-hop Router receives that resource reclaims message and finishes recovery, send ACK, show that the resource recovery finishes to destination.
Situation two: the resource in the network can not satisfy the request of service
Step 1: if the bandwidth resources deficiency in the network, arrive the node of bandwidth deficiency when resource detection message after, this node no longer next node on the path is transmitted probe data packet, and can send a detection failed message to the source end, and this message also arrives the source end with forwarded hop-by-hop.
Step 2: the source end then sends the resource reservation failed message to destination after receiving and surveying failed message, and refusal is request this time.
Situation three
When existing a plurality of terminal request to obtain the certain quality assurance in the network simultaneously, each terminal is endowed certain priority according to the expense of its payment, and the access switch router ASR that directly links to each other with terminal provides corresponding quality assurance according to the priority height of terminal as these terminals.General steps is as follows:
Step 1: each terminal is reported the expense of oneself paying to coupled ASR, and ASR gives certain priority according to the payment tabulation to each terminal.
Step 2:ASR preferentially carries out resource detection and reservation at the terminal of high priority, is that terminal is carried out service quality and guaranteed according to the step of above-mentioned quality assurance.
Step 3: if the resource in the network is abundant, ASR can be followed successively by each terminal and successively carries out resource detection and reservation so, thereby guarantees the service quality of each terminal.
Step 4: if the resource in the network can not satisfy the quality assurance request of all terminals, then the resource of each node of network is refused the quality assurance request of follow-up terminal after being assigned to a certain degree.
Step 5:,, or obtain service by the best effort style that does not have quality assurance because Internet resources are not enough, or wait for quality assurance request next time for the terminal of lower priority.
Under above-mentioned three kinds of situations, guaranteed end-to-end quality of service, the end-to-end quality of service that can effectively solve in the integrated marked network guarantees problem, given up the Service Quality Management device UQoSM in the territory in the centralized service quality assurance mechanism, broken away from the dependence of terminal to the Service Quality Management device, reduced of the danger of malice terminal, had advantages such as extensibility is good, strong robustness the core net critical server.
Example one
With reference to Fig. 3 and Fig. 4, the embodiment of the integrated marked network method for ensuring service quality of the present invention is described.
Among Fig. 3, destination D obtains one to source end S request and has the real-time service that certain service quality guarantees.Among Fig. 3,1 represents resource detection, and 2 representatives are surveyed and returned, and 3 represent resource reservation, the transmission of 4 representative datas, the flow direction of dotted line representative of data flow wherein.31 is certificate server, and 32 is mapping server.
The schematic diagram that reclaims for resource among Fig. 4.Wherein, on behalf of resource, 5 reclaim request, and on behalf of resource, 6 reclaim, and on behalf of resource, 7 reclaim confirms.
Specifically carry out transfer of data according to following steps.
Step 1: destination D (such as, the user) to source end S (such as, the server of real time business) service in real time of request, and the request network can provide certain service quality to guarantee, destination D proposes the QoS application to source end S, after source end S receives request, send detection packet and carry out resource detection, the available bandwidth of every link of route exploration along source end S to destination D.
Step 2: if the bandwidth of every link all can satisfy user's demand on the route, then detection packet arrives last-hop Router, promptly behind the ASR that destination D is inserted, can return the detection success message, and this message forwarded hop-by-hop is to source end S.
Step 3: source end S sends RESV, ergodic source end S each node in the route of destination D, and the notice router is this service configuration formation, bandwidth reserved.After last-hop Router is received RESV and is finished configuration, can send an ACK message to destination D, show that resource reservation finishes, serve available beginning.
Step 4: according to route of having set up and reserved resource, source end S sends data to destination D.
Step 5: after service was finished, destination D need propose to cancel request to source end S, after source end S receives, sent resource and reclaimed message, was recovered in each network node place reserved resource.
Step 6: after last-hop Router receives that resource reclaims message and finishes recovery, send ACK, show that the resource recovery finishes to destination D.
Integrated marked network service quality guarantees system embodiment
Example two
With reference to Fig. 5, the integrated marked network service quality of Fig. 5 guarantees the structured flowchart of system embodiment.Comprise request module 50, detecting module 51, feedback module 52, reserve module 53 and transport module 54.Wherein, request module 50 is used for destination and obtains service from the source end, and the request source end provides service quality to guarantee; Detecting module 51 is used for source end hop-by-hop on each route between source end and the destination and surveys the available resources of every link, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys; Feedback module 52 is used for after detection packet arrives the ASR that destination links to each other, if the resource of each bar link all can satisfy the requirement of service on this route, then the route that meets the demands is fed back to the source end as result of detection; Reserve module 53, be used for the source end and carry out resource reservation at every link of this route, and the corresponding priority level formation is set at each router according to result of detection; Transport module 54, after being used for resource reservation and finishing, source end and destination are in the enterprising line data transmission of the route of finishing resource reservation.
In the present embodiment, the mode that the source end is surveyed by link by link system obtains available network resources, abundance and needs are reserved the decision of how many resources to make resource according to result of detection, will announce to destination reserving the result after reservation is finished, source end and destination just can be finished transfer of data on the good path of foundation.This method can provide the service of the polymorphic type with quality assurance for the user, has advantages such as extensibility is good, robustness is good.This method improvement existing service quality guarantee mechanism, realized that distributed end-to-end quality of service guarantees.
Example three
With reference to Fig. 6, further, after transport module 54, can also be connected with recycling module 55 in turn and confirm to reclaim the module 56 that finishes.Wherein, recycling module 55 specifically is used for, and after described source end was finished transfer of data, described destination need propose to cancel request to described source end, and the source end reclaims and is reserved in reserved resource on every link after receiving that this cancels request; Confirm to reclaim the module that finishes and specifically be used for, after last-hop Router receives that resource reclaims message and finishes recovery, send ACK, show that the resource recovery finishes to destination.
In addition, also be connected with the denial of service module behind the detecting module 51, this module is used for: if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request that certain mass guarantees.
More than a kind of integrated marked network method for ensuring service quality provided by the present invention and system are described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. an integrated marked network method for ensuring service quality is characterized in that, comprises the steps:
Request step, destination obtains service from the source end, and the request source end provides service quality to guarantee;
Detection steps, hop-by-hop is surveyed the available resources of every link on each route between source end and the destination, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys;
Feedback step, arrive the couple in router ASR link to each other with destination when detection packet after, all can satisfy the requirement of service as if the resource of each bar link on this route, then the route that meets the demands is fed back to described source end as result of detection;
Reserve step, described source end carries out resource reservation according to described result of detection at every link of this route, and at each router the corresponding priority level formation is set;
Transmitting step, after resource reservation was finished, source end and destination were in the enterprising line data transmission of the route of finishing resource reservation.
2. integrated marked network method for ensuring service quality according to claim 1 is characterized in that, also comprises the steps: behind the described transmitting step
Recycling step, after described source end was finished transfer of data, described destination proposed to cancel request to the source end, and the source end reclaims the resource that is reserved on every link after receiving that this cancels request;
Confirm to reclaim the step that finishes, after last-hop Router receives that resource reclaims message and finishes recovery, send acknowledge character ACK, show that the resource recovery finishes to destination.
3. integrated marked network method for ensuring service quality according to claim 1 is characterized in that, also comprises the steps: after the described detection steps
The denial of service step: if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request of certain mass assurance.
4. an integrated marked network service quality guarantees system, it is characterized in that described system comprises:
Request module is used for destination and obtains service from the source end, and the request source end provides service quality to guarantee;
Detecting module is used for the available resources that on each route between source end and destination hop-by-hop is surveyed every link, if exist available resources can not satisfy the link of resource requirement, then reselects route and surveys;
Feedback module is used for after detection packet arrives the couple in router ASR link to each other with destination, all can satisfy the requirement of service as if the resource of each bar link on this route, then the route that meets the demands is fed back to described source end as result of detection;
Reserve module, be used for described source end and carry out resource reservation at every link of this route, and the corresponding priority level formation is set at each router according to described result of detection;
Transport module, after being used for resource reservation and finishing, source end and destination are in the enterprising line data transmission of the route of finishing resource reservation.
5. integrated marked network service quality according to claim 4 guarantees system, it is characterized in that, also is connected with in turn behind the described transport module as lower module:
Recycling module is used for after described source end is finished transfer of data, and described destination proposes to cancel request to described source end, and the source end reclaims the resource that is reserved on every link after receiving that this cancels request;
Confirm to reclaim the module that finishes, be used for after last-hop Router receives that resource reclaims message and finishes recovery, sending acknowledge character ACK, show that the resource recovery finishes to destination.
6. integrated marked network service quality according to claim 4 guarantees system, it is characterized in that, also be connected with the denial of service module behind the described detecting module, this module is used for: if the source end is through after surveying, the available resources that obtain all routes between source end and the destination all can not satisfy the resource requirement of service, and then end this time of just refusing destination in source has the service request that certain mass guarantees.
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