KR100694299B1 - System and method for providing qos between end to end in broadband convergence network - Google Patents

Abstract

A QoS(Quality of Service) supply system in a BcN(Broadband convergence Network) and a method thereof are provided to determine a connection route between domains for ensuring QoS requested by a subscriber, and to control connection on the basis of determined connection route information, thereby maintaining dynamic route information as ensuring flow-based QoS of subscriber unit. A subscriber(101) demands a connection service for ensuring QoS for an application service in a BcN. An application server(103) registers an application web-based service, and outputs a connection service demand signal in accordance with authentication for providing the demanded connection service and authenticated results. At least one node(202) collects self route information, and floods the collected route information into a higher layer. At least one of LNCPs(Lower Network Control Processors)(205,405,505) receives each piece of the route information to flood the route information to a higher layer, and controls connection paths of the nodes(202) according to connection routes demanded by the subscriber(101). An HNCP(Higher Network Control Processor)(600) receives the flooded route information to obtain route information of entire domains, and determines an end-to-end connection route for ensuring the QoS demanded by the subscriber(101) on the basis of the obtained route information, then provides the determined route to the LNCPs(205,405,505).

Description

System and Method for Providing QoS between end to end in Broadband convergence Network

1 is an overall configuration diagram of a system for providing quality of service (QoS) in a broadband converged network according to a preferred embodiment of the present invention.

FIG. 2 is a view for explaining a process for aggregation and connection establishment for end-to-end quality of service (QoS) guarantee in FIG. 1.

3 is a flowchart illustrating a method for providing end-to-end quality of service (QoS) in a broadband converged network according to a preferred embodiment of the present invention.

4 is a flowchart illustrating a connection service request step for guaranteeing a quality of service (QoS) in FIG. 3 in more detail.

FIG. 5 is a flowchart illustrating a connection service request registration step for guaranteeing a quality of service (QoS) in FIG. 3 in more detail.

FIG. 6 is a flowchart illustrating a connection route information determining step of FIG. 3 in detail.

7 is a flowchart illustrating the LSP aggregation and connection control steps of FIG. 3 in more detail.

 Explanation of symbols on the main parts of the drawings

101: subscriber 102: web-based application services

103: application server 104: open API

105: Open API Gateway 106: SIP

600: Higher Network Control Processor (HNCP)

205,405,505: Lower Network Control Processor (LNCP)

The present invention relates to a broadband convergence network (BcN), and more particularly, to a broadband convergence network capable of providing a guaranteed quality of service (Qos) for end-to-end sessions under multiple domains. The present invention relates to a QoS providing system and a method thereof.

Recently, the trend of the information technology (IT) industry requires an integrated environment that can provide rapid response services in a rapidly changing business environment in real time. In addition, companies need to be able to respond quickly to consumer demand. In this respect, Broadband convergence networks (BcNs) have been proposed to provide functions for integration between various media. Such broadband integrated network (BcN) provides functions such as voice and data integration, wired and wireless integration, and communication and broadcasting convergence.

Integration between various media through broadband convergence network requires interworking between service providers or service networks, and must satisfy user demand for service guarantee. As such, different operators may have different domains and will perform different operation policies. Here, each domain has a signal for connection management within each domain and a routing protocol for internal routing.

As such, inter-media integration through interworking between heterogeneous systems and interworking between different applications will not satisfy the required service requirements in a short time. The web-based integrated service, which has alleviated these shortcomings, facilitates the access of the operator's network in a form separated from the network function through the Internet, thereby facilitating the creation of a new service as if it were its own.

The primary purpose of the broadband integrated network (BcN) is to provide users with guaranteed quality broadband multi-services anytime, anywhere under the integrated service. To this end, quality of service (QoS) and security must be ensured, and Internet protocol version 6 (IPv6) must be performed. In particular, in order to guarantee the service of the subscriber in terms of quality of service (QoS), the quality of service (QoS) for end-to-end sessions should be guaranteed under multiple domains.

Recently, many proposals have been made for such end-to-end quality of service (QoS) guaranteed service, but there is no consistent control processing between domains such as signaling or routing information for actual sessions and resource information of each link. Do not. That is, only limited information (such as connectivity information) is transmitted to the neighboring domain, and detailed information (routing information, traffic information, etc.) is not transmitted to the actual inter domain. Therefore, the end-to-end quality of service (QoS) is not guaranteed through the conventional method.

<Requirements for Inter-Area MPLS Traffic Engineering> of the Internet Engineering Task Force (IETF) Standardized Request for Comment (RFC) provides an inter-area MPLS Multi-Protocol Label Switching Traffic Engineering for routing traffic between multiple domains. BGP recursive routing with a static route for static routing or next-hop address of Border Gateway Protocol (BGP) is supported. To this end, ABRs propagate Internet Protocol (IP) reachability information. Here, the IP reachability information is used for route traffic from the start node LSR (Label Switched Router) to the final destination via the ABR.

In addition, the IETF draft <LSP Hierarchy with Generalized MPLS TE> improves the scalability of GMPLS (Generalized Multi-Protocol Label Switching) to establish LSP (Label Switched Path) through different domains. By creating a hierarchy, it is useful for aggregating LSPs. The method of generating such a hierarchy may be based on a first label switching router (LSR) that generates a TE Traffic Engineering Label Switched Path (TE LSP) or a second Open Shortest Path (OSPF) as used to generate a Label Switched Path (LSP). As an instance of First / Intermediate System-to-Intermediate System (ISIS), an LSR that forms a forwarding adjacency (FA) by advertizing any Traffic Engineering (TE) link to the LSP. Or by allowing other LSRs to use the FA to calculate their third pass, or by nesting the original LSPs by another LSR by stacking the fourth label. Doing.

The IETF standardization techniques are limited to MPLS, but are an important element in end-to-end connection. The following problems are among the domains in which MPLS is handled. In addition, in order to guarantee end-to-end quality of service (Qos), all nodes ranging from subscriber's request to many domains and terminations through MPLS (or GMPLS) are required by users. The quality of service (QoS) guarantee mechanism should be performed uniformly.

However, many existing IETF standardization techniques are limited to a single domain with many mechanisms to ensure quality of service (QoS), such as Multi-Protocol Label Switching (MPLS) Traffic Engineering (TE). In addition, existing IETF standardization techniques lack the inter-area MPLS traffic engineering mechanism that passes through multiple Inter Gateway Protocols (IGPs), making it difficult to guarantee strict quality of service (Qos) throughout the entire domain.

Furthermore, in the existing IETF standardization technology, the start node {head-end Label Switched Router (LSR)} does not know routing information that goes through the domain (i.e., in the form of hierarchy), and thus cannot use the Constraint Shortest Path First (CSPF) algorithm. CSPF calculation up to tail-end LSR is difficult. In addition, in the existing IETF standardization technique, information propagation for path selection is not reached locally. In addition, when provisioning a path through an interconnected area border router (ABR) through a domain, additional provisioning is required at a transit node. In addition, for large inter-area MPLS deployments, one must be able to carry one or more aggregated Label Switched Paths (LSPs) of individual TE Traffic Engineering Label Switched Paths (TE LSPs). do.

As such, many proposals have been made to provide end-to-end quality of service (QoS) guarantees to provide broadband converged network services, and many standardization organizations are partially proposing them, but routing information for signaling or routing for actual sessions, And consistent control processing between domains such as resource information of each link is not performed.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a system and method for providing QoS in a broadband convergence network for providing broadband multi-service with guaranteed quality of service (Qos) for end-to-end sessions under multiple domains. It is.

It is another object of the present invention to ensure quality of service (Qos) and security for end-to-end sessions that can be provided to users safely and seamlessly anytime, anywhere under integrated services between various media, and Internet Protocol version 6 The present invention provides a system and method for providing a QoS in a broadband integrated network for providing broadband multi-service.

According to an aspect of the present invention, there is provided a system for providing a quality of service (QoS) in a broadband converged network, comprising: a subscriber requesting a connection service for guaranteeing a quality of service for an application service in a broadband integrated network; An application server that registers an application web-based service that can be provided to the subscriber and outputs the connection service request signal according to an authentication and authentication result for providing the requested connection service from the subscriber; At least one node included in the domain to collect its own route information by performing Open Shortest Path First-Traffic Engineering (OSPF-TE), and flooding the collected own route information to a higher level; At least one of receiving route information of each of the nodes and flooding the host, and controlling connection paths of the nodes according to the connection route requested by the subscriber provided based on the route information of the flooded nodes. Lower Network Control Processor (NCNP); And receiving route information of nodes flooded from the LNCP to obtain route information of the entire domain, and based on the obtained route information of the entire domain, establish a connection route between the terminals for guaranteeing the quality of service requested by the subscriber. And a Higher Network Control Processor (HNCP) to determine and provide the LNCPs.

 In one embodiment of the present invention, the HNCP includes a Proxy NDP (Neighbor Discovery Protocol) per each domain to maintain OSPF-TE information in each of the domains, and the domains through each of the Proxy NDPs. Get full route information over.

In one embodiment of the present invention, the OSPF-TE is performed differently among nodes belonging to different networks with different domains.

In one embodiment of the present invention, when the path of the connection route determined by the HNCP is in a single domain, the LNCP performs connection control for the nodes in the single domain according to the determined connection route.

In one embodiment of the present invention, when the path of the connection route determined by the HNCP passes through a plurality of domains, the LNCP transfers the connection flow of the subscriber according to the determined connection route to a label switched path (LSP) within the domain. Map to.

In one embodiment of the present invention, the LNCP selectively performs aggregation and label stacking for the LSP for each domain as the path of the determined connection route passes through a plurality of domains.

In addition, a method of providing a quality of service (QoS) in a broadband integrated network according to the present invention for achieving the above object, the subscriber of the broadband integrated network requesting an application server for a connection service to guarantee the quality of service; Determining, by the application server, the type of service requested by the subscriber, and requesting HNCP to establish a connection for guaranteeing service quality through a path set according to the type of service; Registering, by the HNCP, with a connection control module having request information of a connection service for guaranteeing the requested quality of service; At least one node included in the domain collecting its route information and flooding the HNCP; The HNCP receiving route information of the nodes to obtain route information of the entire domain; Determining an end-to-end connection route for guaranteeing the quality of service requested by the subscriber based on the entire route information; And controlling the connection between the nodes according to the determined connection route.

In one embodiment of the present invention, the method of providing a QoS of the present invention includes registering a web-based application service that can be provided to the subscriber before the application server receives a connection service for the service quality guarantee from the subscriber. It may further include.

In this case, the web-based application service may include at least one of a network connection service, an intelligent network service, an enterprise service, and an additional service.

In one embodiment of the present invention, in the route information collecting step, the nodes are included in the corresponding domain to perform Open Shortest Path First-Traffic Engineering (OSPF-TE) to collect their own route information.

In one embodiment of the present invention, the step of obtaining the root information for the entire domain, Proxy NDP (Neighbor Discovery Protocol) provided for each domain in order to maintain the OSPF-TE information in each of the domain HNCP ) To obtain full route information across the domains.

In an embodiment of the present invention, the QoS providing method of the present invention provides a method for providing QoS to the nodes in the single domain according to the determined connection route when the path of the connection route determined by the HNCP is within a single domain. The method may further include performing control.

In one embodiment of the present invention, the QoS providing method of the present invention, when the LNCP path of the connection route determined by the HNCP goes through a plurality of domains, the LNCP corresponds to the connection flow of the subscriber according to the determined connection route The method may further include mapping to a label switched path (LSP) in the domain.

In one embodiment of the present invention, the QoS providing method of the present invention, the LNCP aggregation and label stacking (Label Stacking) for the LSP for each domain as the path of the determined connection route passes through a plurality of domains The method may further include selectively performing.

According to the configuration of the present invention as described above, the present invention is required by the subscriber through the entire route information obtained by obtaining the entire route information by the OSPF-TE in each domain to ensure the quality of service between end-to-end in the broadband converged network By determining the connection route between domains to ensure a quality of service, and controlling the connection based on the determined connection route information, it is possible to maintain the dynamic route information and to establish the connection by the trigger of the subscriber. Ensure flow-based quality of service.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

In the present invention, in order to guarantee end-to-end quality of service (Qos) under multiple domains, a connection between domains is established on a web-based basis, and quality of service (QoS) is set according to a user's needs. In order to establish a connection between domains, OSPF-TE (Open Shortest Path First Traffic Engineering) with resource information is performed in each domain, and a network control system (domain-specific network control system) exists for each domain association to provide end-to-end connectivity. And perform flow aggregation to ensure service quality. As a result, end-to-end guarantees the quality of service of the user's request, thereby enabling seamless connection between end-to-end.

Specifically, the following end-to-end proposes a specific method for guaranteeing quality of service (Qos).

First, end-to-end quality of service (QoS) guarantee means guaranteeing the quality of service between subscribers. In this case, the subscriber may be a user who uses a terminal, may be a virtual private network (VPN) subscriber such as a branch of a large enterprise, or may be a carrier. In general, end-to-end quality of service refers to quality of service between edge nodes of an access network, but in fact, end-to-end quality of service may be referred to as quality of service between subscribers using terminals. have.

In the present invention, end-to-end quality of service (QoS) guarantee is the quality of service (Qos) between the subscribers using the terminal, the subscriber requires the connection of the other subscriber through the network. In this case, the counterpart subscriber may include a terminal user or a server that provides a service. The subscriber requests the desired service through a web browser. The service required by the actual user uses the Open API (Application Interface) of the standardization organization Parlay. Open APIs are network independent, can meet market demands in a short time (TTM), and can flexibly respond to operator models. In the present invention, the subscriber implements an Open API that can set the quality of service (QoS), and through this API, the Parlay Gateway analyzes the service through this and associates the service with the appropriate network. In addition, in the present invention, there are NCPs (Network Control Processors) that actually handle such services, which are layered according to the network configuration. Here, the lower lower network control processor (NCP) serves as an element management system (EMS) for managing general network elements (NEs), and the upper upper NCP (HNCP) is used for overall network management. It acts as an NMS (Network Management System).

As described above, although two levels (lower / higher) of NCP exist in the present invention, higher NCPs (HNCPs) may be grouped by higher NCPs for scalability of a network. In order to guarantee end-to-end quality of service (QoS) in the present invention, the lower NCP (LNCP), which is in charge of controlling each node, obtains route information through nodes and Open Shortest Path First Traffic Engineering (OSPF-TE). To control the quality of service (QoS). In order to control the broadband integrated network (BcN) service, IMS (IP Multimedia Subsystem) proposed by the 3rd Generation Partnership Project (3GPP) of the wireless network is currently accommodated for the control of the wired network. The NCP has an interface device. The present invention also has a matching device for linkage with a soft switch for the service of a voice subscriber.

Second, each node, an area border router (ABR) function, roles of lower NCPs and upper NCPs are defined for route selection for connection establishment, quality of service (QoS) information, and connection aggregation between domains. Open Shortest Path First Traffic Engineering (OSPF-TE) including resource information, which is quality of service (QoS) information, is performed at nodes of each domain. Since such OSPF-TE is limited to one domain, another OSPF-TE is performed in another domain. In this way, each OSPF-TE is executed in each domain, and this OSPF-TE is executed in association with the upper NCP. The upper lower NCP may set a route based on this information in the case of a connection request in its own domain based on the route information obtained by performing OSPF-TE.

All connections in the present invention are statically established by the NCP for fast connection, and no signaling of MPLS (Multi-Protocol Label Switching) or GMPLS (Generalized Multi-Protocol Label Switching) is performed. If the connection request goes beyond a domain, root information between domains is needed. To this end, OSPF-TE linked to the lower NCP is linked to the upper NCP, which is the next higher level of the lower NCP, and the upper NCP maintains OSPF-TE information from different domains. In order to maintain OSPF-TE information in each of these domains, a Proxy NDP (Neighbor Discovery Protocol) is provided for each domain to obtain the entire route information from each domain.

Based on this route information, connection is established through each domain, and the lower NCP controls the set quality of service (QoS) information. Also, if the subscriber flow at the initiating node is aggregated into a label switched path (LSP) within the real network, or as the LSP aggregates into a new LSP as it crosses different domains, each NCP requires aggregation or label stacking Determines whether Label Stacking is required and controls the connection between domains.

Hereinafter, a system for providing a quality of service in a broadband convergence network (BcN) for guaranteeing end-to-end quality of service (QoS) by a user trigger according to the present invention and its The providing method will be described in detail.

1 is an overall configuration diagram of a system for providing quality of service (QoS) in a broadband converged network according to a preferred embodiment of the present invention.

As shown in FIG. 1, the subscriber 101 requests the desired server QoS application service 102 from the application server 103 via a web browser. The subscriber QoS application service 102 may include a web-based network connection service, an intelligent network service, an enterprise service and an additional service. The subscriber QoS application service 102 is registered in advance with the application server 103 to provide the application service of subscriber QoS before service execution.

The service required information of the subscriber 101 is implemented independently of the network, and the Open API Interface 105 is opened through the Open Application Interface (API) 104 in which the subscriber can set QoS. Is delivered). The open API gateway 105 analyzes the service requested by the subscriber 10 and associates it with a network suitable for providing the service.

Network Control Processors (NCPs) consisting of a Higher Network Control Processor (HNCP) 600 and a Lower Network Control Processor (NCP) 205, 405, 505 actually handle the services required by the subscriber 101, According to the network configuration, the upper network processor is layered into a HNCP (Higher Network Control Processor) and a lower network processor (LNCP). The HNCP 600 is located above the LNCPs 205, 405, and 505 to perform overall network management. The LNCPs 205, 405, and 505 are located below the HNCP 600 to manage general network equipment groups.

After establishing the service connection required by the subscriber 101, the actual data is input to the start node 202 through a digital subscriber line access multiplexer (DSLAM) 114 installed at the subscriber end. The connection at the start node 202 is flow-based at the subscriber level, and is processed as one LSP (Label Switched Path) or aggregated LSP as it enters the network. As such, a connection passes through multiple domains such as access network 204, metro network 404, core network 504.

According to an embodiment of the present invention, the broadband integrated network 10 may use a SIP (Session Initiation Protocol) when requesting a web-based voice service for matching with a soft switch 107 for a service of a voice subscriber. Service through (106).

Currently, the IMS (IP Multimedia Subsystem) 108 proposed in the 3rd Generation Partnership Project (3GPP) of the wireless network for the service control in the broadband integrated network, and the present invention, the HNCP (600) for interworking with such a control platform ) Has an interface device of IMS 108.

FIG. 2 is a view for explaining a process for aggregation and connection establishment for end-to-end quality of service (QoS) guarantee in FIG. 1.

Referring to FIG. 2, a method for obtaining route information for end-to-end connection establishment and aggregation of connections according to connection establishment will be described. As shown in FIG. 2, in connection establishment with multiple domains, the biggest issue is how to extract the route. According to an embodiment of the present invention, nodes 201, 202, 203, 401, and 402 of each domain perform Open Shortest Path First-Traffic Engineering (OSPF-TE) including resource information which is QoS information. Since the OSPF-TE is limited to one domain, nodes belonging to different domains perform different OSPF-TEs. That is, different OSPF-TEs are performed between the nodes 201, 202, 203 belonging to the first network 204 and the nodes 401, 402 belonging to the second network 404. In addition, the ABR 301 that links the two domains 204 and 404 also performs its own OSPF-TE.

In this way, each domain performs its own OSPF-TE, and this OSPF-TE is performed in association with the upper LNCPs 205 and 405. The upper LNCP 205 or 405 may set a route based on this information when the connection request is made in its own domain based on the route information obtained by the OSPF-TE. If the upper LNCP of the LNCP 205, 405 is the upper HNCP 600, the corresponding OSPF-TE linked to the LNCP 205, 405 is linked to the HNCP 600 that is the difference higher than the LNCP 205, 405, and the HNCP 600. ) Maintains OSPF-TE information from different domains. In order to maintain OSPF-TE information in each of these domains, a Proxy NDP (Neighbor Discovery Protocol) can be provided for each domain to obtain the entire route information from each domain.

3 is a flowchart illustrating a method for providing end-to-end quality of service (QoS) in a broadband converged network according to a preferred embodiment of the present invention.

As shown in FIG. 3, the subscriber 101 requests a connection service for guaranteeing service (QoS) from the application server 103 (S100). In this regard, the application server 103 determines the type of service requested by the subscriber 101 and processes the connection setting necessary to provide a connection service for guaranteeing quality of service (QoS) through a path set according to the type of service. Request to HNCP 600. The type of service may be a multimedia service or a voice service.

The HNCP 600 registers the request information of the connection service for guaranteeing the quality of service (QoS) requested in the connection control module of the own 600 (S300). The HNCP 600 interworks with the IMS 108 when the requested service is a voice service. Subsequently, the HNCP 600 collects route information on each node of the corresponding network through the performance of OSPF-TE and through the route information of the entire networks 204 and 404, the quality of service (QoS) requested by the subscriber 100. The connection route information for the guarantee is determined (S500). At this time, the root information of the entire network can be obtained by driving a Proxy NDP (Neighbor Discovery Protocol) set for each domain (network). Accordingly, the HNCP 600 transmits the determined connection route information to the LNCPs 205 and 405 so as to perform connection establishment through the determined connection route information. The LNCPs 205 and 405 selectively aggregate LSP (Label Switched Path) according to the connection route information provided from the HNCP 600 and perform connection control accordingly (S700).

As such, in order to guarantee end-to-end quality of service (QoS) in the broadband converged network, the entire route information obtained by OSPF-TE in each domain is obtained, and the required quality of service (QoS) is guaranteed through the obtained total route information. By determining the connection route between domains for the control, and controlling the connection based on the determined connection route information, it is possible to maintain the dynamic route information, based on the flow of the subscriber unit by the connection setting by the trigger of the subscriber ( flow-based quality of service can be guaranteed.

FIG. 4 is a detailed flowchart illustrating a connection service request step S100 for guaranteeing a quality of service (QoS) in FIG. 3.

As shown in FIG. 4, before the subscriber 100 requests the connection service for the quality of service (QoS) guarantee, the application server 103 may check the quality of service for the provision of the quality of service (QoS) guarantee service. Registers an application service that can be provided (S110). Thereafter, the subscriber 101 requests the application server 103 for a connection service for guaranteeing service quality (S204). Upon receiving a signal requesting a connection service for guaranteeing the quality of service, the application server 103 retrieves the subscriber's profile through the registered subscriber database and checks whether the requested connection service is a service that is permitted to be provided to the subscriber ( S404).

If the subscriber 101 is allowed to provide, the application server 103 determines whether the type of service requested by the subscriber 101 is a multimedia service or a voice service (S150). If the requested service is a multimedia service (S150), the application server 103 transmits an open API call signal to the open API 104. In response to this, the open API 104 calls the open API gateway 105 to provide a service of which the quality of service for the multimedia service is guaranteed (S170). Here, the open API 104 is a Parlay API (Application Interface), and the open API gateway 105 is a Parlay Gateway.

On the other hand, if the type of service requested is not a multimedia service but a voice service (S180), the application server 103 is a Session Initiation Protocol (SIP) 106, a soft switch 107 and an IP Multimedia Subsystem (IMS) ( 108 is called (S190).

FIG. 5 is a flowchart illustrating a connection service request registration step S300 for guaranteeing a quality of service (QoS) in FIG. 3 in more detail.

As shown in FIG. 5, first, the open API gateway 105 called to provide a guaranteed quality of service (QoS) service for a multimedia service requests the HNCP 600 for a connection service for ensuring quality of service ( S310). The HNCP 600 registers the connection service request for guaranteeing the quality of service requested in the connection control module of the own 600 (S320).

On the other hand, if the type of the requested service is a voice service, the soft switch 107 requests the HNCP 600 to establish a connection for the voice service (S330). The HNCP 600 registers the request of the requested voice service to the connection control module of the own 600 (S340).

Currently, the IMS proposed in the 3GPP of the wireless network is accommodated for the control of the wired network. The HNCP 600 has an interface device for interworking with the control platform. In this case, the IMS 108 requests the HNCP 600 to interwork with the IMS 108 (S350). When the IMS interworking request is requested from the IMS 108, the HNCP 600 performs interworking with the IMS 108 through the matching device (S360). In the embodiment of the present invention, the operation of the HNCP 600 is described in the case of a network composed of a plurality of domains. However, in the single network corresponding to one domain, the LNCP 205 operates as described above instead of the HNCP 600. Do this.

FIG. 6 is a flowchart illustrating a connection route information determining step S500 of FIG. 3 in more detail.

As shown in FIG. 6, the nodes of each domain, that is, the node 201 of the first network 204 and the node 401 of the second network 404, respectively, perform OSPF-TE to obtain route information. Collect and store the collected route information in a forwarding information base (FIB) (S510, S515).

The node 201 of the first network 204 and the node 401 of the second network 404 flood the stored FIB information to their upper LNCP1 205 or LNCP2 405 (S520). S525). At this time, if the node is not connected to the upper LNCP, its own FIB information is flooded to the neighboring node.

Subsequently, the LNCP1 205 and the LNCP2 405 respectively receive the FIB information received from the node 201 of the first network 204 and the node 401 of the second network 404, respectively. Flud into (S530, S535). When receiving the FIB information for the nodes of each domain from the LNCP1 205 and LNCP2 405, the HNCP 600 should be made of a single FIB to extract the connection route, so that the neighboring node The Proxy NDP which reads the FIB information is driven to generate one FIB information (S540). The generated FIB is the root information of the entire network.

Accordingly, the HNCP 600 determines the connection route for the service quality guarantee requested by the subscriber based on the generated total route information (S550).

FIG. 7 is a flowchart illustrating the LSP aggregation and connection control step S700 of FIG. 3 in more detail.

As shown in FIG. 7, the HNCP 600 determines the number of domains that pass through the determined connection route (S710). If the path of the connection route is a single domain, the HNCP 600 requests the LNCP1 205 or LNCP2 405 to perform connection establishment according to the determined connection route (S720, S740). At this time, the LNCP1 205 or LNCP2 405 performs connection control between nodes in the network according to the provided connection route (S730, S750).

On the other hand, when the path of the connection route is a plurality of domains, the HNCP 600 requests the LNCP1 205 and the LNCP2 405, respectively, to perform connection establishment according to the determined connection route (S760, S770). The LNCP1 205 and LNCP2 405 respectively map the connection flow of the subscriber to the LSP in the network (S780, S790). Thereafter, the LNCP1 205 and LNCP2 405 stack an LSP when aggregation of a mapped LSP is required and when it is necessary to maintain the LSP without the aggregation of the LSP. stacking) (S785, S795).

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various modifications and equivalents may be made by those skilled in the art without departing from the scope of the present invention, which is attached to the scope of the claims. Other implementations may be possible. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

According to the present invention, in order to guarantee the quality of service (QoS) between end-to-end in a broadband converged network, the entire service information obtained by the OSPF-TE in each domain is obtained and the service quality required by the subscriber is guaranteed through the obtained whole route information. By determining the connection route between domains and controlling the connection based on the determined connection route information, dynamic route information can be maintained and a flow-based service for each subscriber can be established through connection establishment by a trigger of a subscriber. Quality can be guaranteed

Claims (14)

A subscriber requesting a connection service for guaranteeing a quality of service (QoS) for an application service in a broadband converged network; An application server that registers an application web-based service that can be provided to the subscriber and outputs the connection service request signal according to an authentication and authentication result for providing the requested connection service from the subscriber; At least one node included in the corresponding domain to perform OSPF-TE to collect its own route information and to flood the collected own route information to an upper level; At least one of receiving route information of each of the nodes and flooding the host, and controlling connection paths of the nodes according to the connection route requested by the subscriber provided based on the route information of the flooded nodes. Lower Network Control Processor (NCNP); And Receive route information of the nodes to be flooded from the LNCP to obtain route information of the entire domain, and determine the connection route between the terminals for the service quality guarantee requested by the subscriber based on the obtained route information of the entire domain. A Higher Network Control Processor (HNCP) for providing the LNCPs; QoS providing system in a broadband integrated network comprising a. The method of claim 1, wherein the HNCP, In order to maintain OSPF-TE information in each of the domains, a Proxy NDP (Neighbor Discovery Protocol) is provided for each of the domains, and the entire root information across the domains is obtained through the each Proxy NDP. QoS provision system in a broadband integrated network. The method of claim 2, A system for providing QoS in a broadband converged network, wherein the domains each perform different OSPF-TEs between nodes belonging to different networks. The method of claim 1, wherein the LNCP, And if the path of the connection route determined by the HNCP is in a single domain, controlling the connection to the nodes in the single domain according to the determined connection route. The method of claim 1, wherein the LNCP, When the path of the connection route determined by the HNCP passes through a plurality of domains, the connection flow of the subscriber is mapped to a label switched path (LSP) in the domain according to the determined connection route. QoS provisioning system. The method of claim 5, wherein the LNCP, And as the path of the determined connection route passes through a plurality of domains, selectively performing label aggregation and label stacking for the LSP for each domain. Requesting, by a subscriber of the broadband converged network, an application server for a connection service for guaranteeing quality of service (QoS); Determining, by the application server, the type of service requested by the subscriber, and requesting HNCP to establish a connection for guaranteeing service quality through a path set according to the type of service; Registering, by the HNCP, with a connection control module having request information of a connection service for guaranteeing the requested quality of service; At least one node included in the domain collecting its route information and flooding the HNCP; The HNCP receiving route information of the nodes to obtain route information of the entire domain; Determining an end-to-end connection route for guaranteeing the quality of service requested by the subscriber based on the entire route information; And QoS control method in a broadband integrated network, characterized in that for controlling the connection between nodes according to the determined connection route. The method of claim 7, wherein And registering a web-based application service that can be provided to the subscriber before the application server receives a request for a connection service for guaranteeing a quality of service from the subscriber. The method of claim 8, The web-based application service includes at least one of a network connection service, an intelligent network service, an enterprise service, and an additional service. The method of claim 7, wherein in the collecting route information, The nodes are included in the corresponding domain to perform Open Shortest Path First-Traffic Engineering (OSPF-TE) to collect the route information of itself, QoS providing method in a broadband integrated network. The method of claim 10, wherein obtaining route information about the entire domain comprises: In order to maintain the OSPF-TE information in each domain, the HNCP obtains the entire route information across the domains through a Proxy NDP (Neighbor Discovery Protocol) provided for each domain. QoS Provisioning Method in. The method of claim 7, wherein If the path of the connection route determined by the HNCP is within a single domain, the LNCP further comprises performing connection control to the nodes in the single domain according to the determined connection route. QoS Provisioning Method in. The method of claim 7, wherein If the path of the connection route determined by the HNCP passes through a plurality of domains, the LNCP further comprises mapping the connection flow of the subscriber to a label switched path (LSP) within the corresponding domain according to the determined connection route; QoS providing method in a broadband integrated network, characterized in that. The method of claim 13, And selectively performing aggregation and label stacking for the LSP for each domain as the LNCP passes the path of the determined connection route through a plurality of domains. QoS provision in network.

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