JP2003249955A - QoS SERVICE SYSTEM AND QoS SERVICE SETTING METHOD - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize cooperation of various service by constructing a QoS (quality of service) service system which can provide a QoS service over different ISPs. <P>SOLUTION: An integrated QoS service device (10) for setting, managing, and controlling the QoS service of an entire network and a QoS service database (11) wherein information related to QoS services which respective partial networks can provide are registered are provided for the network constituted of a plurality of partial networks. When a QoS service is requested, the integrated QoS service device (10) performs route analysis and retrieves whether the requested QoS service is registered in the database (11) or not. When the requested QoS service is registered there, network controllers (8 and 9) of partial networks passing a communication route are instructed to provide the QoS service. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a QoS (Quality of Service) service which is set between various devices connected to a communication network by a device in the communication network, and particularly to a different business operator (ISP, etc.). )
The present invention relates to a QoS service system and a QoS service setting method capable of integrating and providing a QoS service across networks having different QoS service implementation methods.

[0002]

2. Description of the Related Art When realizing a QoS service, it is necessary to secure the QoS from the edge to the edge of the network. For example, in a communication network using IP, there are methods such as a method using a resource reservation protocol such as RSVP and a method using DiffServ. In these services, a packet transfer device such as a router adopts these protocols and a QoS realizing method over the entire network. Must support. Even if the QoS is secured in a certain part of the network, if the QoS cannot be secured in the other part, the QoS service as a whole fails.

[0003]

In a communication network used by a user as a communication path, an individual QoS service system is implemented for each partial network of the network, but a single QoS service system is provided as a system for the entire network. Otherwise, when trying to provide a user with a QoS service for the entire network, the service originator (eg, the user or application) identifies the communication path, and each part of the network on the communication path determines which QoS It is necessary to grasp whether the service realization method is implemented and to activate the QoS service of each part of the network.

An object of the present invention is to specify a communication path instead of a service initiating source, grasp the implementation status of a QoS service realizing method in each part of the network on the communication path, and activate the QoS service in each part of the network. The purpose is to instantly activate the QoS service as the entire network in cooperation with the constituent devices and provide a unified integrated QoS service activation interface to the service activation source.

[0005]

In order to achieve the above object, a QoS service system of the present invention is a communication network composed of a plurality of partial networks, in which a network control device is provided in each of the partial networks. A QoS service activation interface for providing a QoS service under each service condition for the range of the deployed partial network,
A QoS service database for registering QoS service implementation information from the network controller.
An integrated QoS service device is provided with a service registration interface and a QoS service search interface for searching for a QoS service, and the integrated QoS service device receives an QoS service activation from a QoS service activation source.
S service activation interface, a route analysis function for determining a communication route based on information from the QoS service activation source, and a database search function for searching the QoS service by calling the QoS service search interface of the QoS service database And a network controller calling function for calling the QoS service start interface of the network controller to start the QoS service.
The service registration interface is used to register the QoS service provision section and the QoS service condition in the QoS service database, and the integrated QoS service device specifies the communication route by the route analysis function when the integrated QoS service activation interface is called. Communication path and QoS by database search function and QoS service database
By searching for the QoS service using the service condition as a key and activating the QoS service of each partial network by the network control device calling function for the network control device for each partial network that realizes the QoS service that meets the condition It is characterized by setting the QoS service in the entire communication network.

Description of QoS service The QoS service conditions include, for example, a transmission rate band and a delay time. Therefore, when trying to distribute a moving image encoded at a bit rate of 2 Mbps from a video distribution server belonging to another sub-network to a certain user terminal, 2 Mb
Although a moving image cannot be viewed and distributed without delay at a transmission rate of less than ps, a clear moving image can be delivered by requesting that the transmission rate be distributed in a band of 2 Mbps as a QoS service. In this case, even if the moving image is distributed over a plurality of partial networks, an integrated QoS service apparatus for integrally managing the QoS service of the entire network is provided, and thus a request is made through a plurality of partial networks. Qo
It is possible to set a communication path in which the S service is secured.

Further, according to the QoS service setting method of the present invention, in a communication network composed of a plurality of partial networks, a network control device is arranged in each of the partial networks, and the range of the arranged partial networks is different. Qo in terms of service
A QoS service registration interface for registering the QoS service implementation information from the network controller, the QoS service database comprising a QoS service activation interface for providing the S service, and
The integrated QoS service device comprises a QoS service search interface for searching a QoS service,
Integrated QoS service activation interface for accepting QoS service activation from S service activation source, QoS
A route analysis function for determining a communication route based on information from an S service activation source, a database search function for calling a QoS service search interface of a QoS service database to search for a QoS service, and a network control device The network control device has a network control device calling function for invoking the QoS service start interface to start the QoS service, and the network control device uses the QoS service registration interface to store the QoS service provision section and the QoS service condition in the QoS service database. The integrated QoS service device specifies the communication route by the route analysis function upon registration and the call of the integrated QoS service activation interface, and the communication route and the QoS by the database search function and the QoS service database. By searching for the QoS service using the service condition as a key and activating the QoS service of each partial network by the network control device calling function for the network control device for each partial network that realizes the QoS service that meets the condition It is characterized by setting the QoS service in the entire communication network.

[0008]

Embodiments of the present invention will be described below. 1 to 5 are diagrams showing the configuration of an example of an embodiment of the present invention. FIG. 1 is a diagram showing an overall configuration of a network system including a composite type QoS service providing system according to the present invention. In this example, the network system includes a plurality of partial networks (for example, a sub-network managed by a plurality of ISPs that provide a network connection service or a sub-network managed by an ISP that performs a content distribution service). Only two sub-networks 1 and 2 are shown for the sake of clarity. Each of the partial networks 1 and 2 is interconnected by a GW router 3, the partial network 1 includes a router 5 that accommodates a user terminal 4, and the partial network 2 includes a router 7 that accommodates a user terminal 6. The partial networks 1 and 2 are communication networks using IP (Internet Protocol).

The partial networks 1 and 2 respectively have network control devices 8 and 9 for managing and controlling the networks, and the provision of the QoS service of each partial network is executed under the control of these network control devices. Each network control device has a common QoS service interface (not shown) for the entire network.
Have. Network controllers 8 and 9 are integrated QoS
Service device 10 and QoS service database 11
Connect to each. Integrated QoS service providing device 10
Is the integrated QoS for the entire network system.
Manage and control the service providing system. Further, the QoS service database 11 stores information on the QoS services that can be provided by each partial network.

FIG. 2 is a diagram showing a configuration of an example of the integrated QoS service device 10. The integrated QoS service providing apparatus 10 has a QoS service activation interface 20 for activating QoS service provision, and appropriately links various QoS services in response to a QoS service provision request from a user terminal or an application. to enable. Further, the integrated QoS service device has a route analysis means. This route analysis means includes a table 22 in which IP addresses are associated with partial networks, and network connection data 23 that stores connection information between partial networks. Further, the integrated QoS service device has a database search means 24 for searching the data stored in the QoS service database 11, and searches the QoS service information stored in the QoS service database via the means. . further,
The integrated QoS service device comprises a network control device calling means 25, and calls the network control device of the corresponding partial network in providing the QoS service via the means.

FIG. 3 is a diagram showing the structure of an example of the QoS service database 11. The QoS service database stores information on the QoS services that can be provided by each partial network or each IPS and the conditions for providing these QoS services. The QoS service database 11 has a QoS service search interface 31, through which integrated QoS is obtained.
While responding to the search request from the service device 10, Q
It has an QoS service registration interface 32, and stores the QoS service presented by the network control device of each partial network via the interface and the provision conditions thereof.

Next, the setting of a communication path in which a QoS service is secured when a QoS service provision request is made from the user terminal or application to the integrated QoS service device will be described. In this example, a case will be described in which a communication path in which a QoS service is secured is set between the user terminal 5 and the user terminal 7.

[QoS Service Registration] First, the network control device of each partial network pre-registers the QoS service that can be provided by the partial network in the QoS service database 11. When registering the QoS service, the network control devices 8 and 9 of the partial networks 1 and 2 are connected to the QoS of the QoS service database 3.
The S service registration interface 24 is called and the QoS services that can be provided are provided by the QoS service database 1
Register at 13. The information to be registered can be, for example, a network identifier as key information of the QoS service, a QoS service providing section, and a QoS service condition. In the case of this example, the network 1 can provide a QoS service in a section between an arbitrary host in the network 1 and the GW rook 3 connected to the network 2,
And QoS between any host in network 1 and any other GW router connected to network 2.
The fact that the service can be provided is registered in the QoS service database 11 together with the QoS service providing conditions. The network 2 is capable of providing a QoS service in a section between any host in the network 2 and the GW router 3 connected to the network 1, and is connected to any host in the network 2 and the network 1. The fact that the QoS service can be provided between the different GW routers is registered in the QoS service database 11 together with the QoS providing conditions.

[From Integrated QoS Service Activation to QoS Service Search Condition Determination] The user terminal 5 accesses the integrated QoS service device 10 and calls the QoS service activation interface 20. When requesting the provision of the QoS service, the user terminal transmits the IP addresses of the user terminal 5 and the user terminal 7, the content of the QoS service to be received, and the condition for receiving the QoS service to the integrated QoS service device 10. The route analysis means 21 of the integrated QoS service device 10 that has received the service provision request associates the networks 1 and 2 to which the user terminals 5 and 7 are connected from the IP addresses of the user terminals 5 and 7 with the received IP address and the network. It is specified using the table 22. Next, the network connection data 23 is used to identify the route of the network connecting the networks 1 and 2 from the networks 1 and 2 to which the user terminals 5 and 7 are connected. In this embodiment, the networks 1 and 2 are connected via the GW router 3. The QoS service conditions required in each network are specified from the network route and the QoS service conditions. In the embodiment, in the network 1, any host in the network 1 is connected to the network 2 G
A QoS service between W routers and a QoS service between an arbitrary host in the network 2 and a GW router connected to the network 1 are required in the network 2, and these QoS service provision sections and QoS service conditions are required. Are also used as search conditions when making an inquiry to the QoS service database.

[Search] The database search means 24 of the integrated QoS service device 10 follows the search conditions and sets the QoS.
The QoS service search interface 31 of the service database 11 is called to execute the search. If a QoS service satisfying the conditions can be found by the search, the process proceeds to the next reservation step. If there is no QoS service satisfying the conditions, the fact that the integrated QoS service cannot be provided is notified to the QoS service activation source.

[Reservation] The network control device calling means 25 of the integrated QoS service device 10 is based on the search result of the database search function 24, and the network control devices 8 and 9 of the networks 1 and 2 which provide the found QoS service. Invoking the QoS service activation interfaces respectively deployed in the network and acquiring the list of GW routers used for connection with the adjacent network. This processing step is necessary in order to use the same GW router in the adjacent network when there are multiple GW routers. Comparing the GW router lists of adjacent networks, selecting the matching GW router 3, and specifying the IP address of the GW router 3 to be used and the respective user terminals 5 and 7 for each QoS service activation interface Make a service reservation. If the network resource between the router 4 and the GW router 3 in the network 1 and the network between the GW router 3 and the router 6 in the network 12 can be captured by the reservation of the QoS service, the network control devices 8 and 9 of each partial network , And returns a response that the QoS service can be activated to the network control device calling means 25, respectively.

[Activation] Integrated QoS receiving the response of the QoS service executable from the network control devices 8 and 9
The network control device calling means 25 of the S service device 10 has a Q installed in each network control device.
Activate QoS service Activate QoS service to interface. Through the above processing, the user 6 and the user 7
The QoS service is activated in each of the networks 11 and 12 which are communication paths between the networks, and the communication path 13 in which the QoS is secured is set as the entire network. still,
As a QoS service activation source, the QoS service can be activated based on a request from a user terminal as shown in FIG. 4, or the QoS service can be activated according to a request from a service application as shown in FIG. .

[0018]

As described above, according to the present invention,
A device of the communication network centralizes the Q of each part of the network through an integrated QoS service interface.
Since the QoS service can be activated and the QoS service can be immediately set for the entire network, the originator of the QoS service specifies the communication path, and each part of the network on the communication path determines which QoS service realization method. It is possible to easily provide the QoS service of the entire network without grasping whether or not is implemented and not performing the processing such as activating the QoS service of each part of the network.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of a network including a QoS service system according to the present invention.

FIG. 2 is a diagram showing a configuration of an example of an integrated QoS service device.

FIG. 3 is a diagram showing a configuration of an example of a QoS service database.

FIG. 4 is a diagram showing an example in which a user terminal is used as an activation source of a QoS service.

FIG. 5 is a diagram showing an example in which a service application is used as a start source of a QoS service.

[Explanation of symbols]

1,2 partial network 3 GW router 4,6 router 5,7 User terminal 8,9 Network controller 10 Integrated QoS service equipment 11 QoS service database 20 Integrated QoS service activation interface 21 Route analysis function 22 tables 23 Network consolidated data 24 Database search function 25 Network controller calling function 31 QoS service search interface 32 QoS service registration interface

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuaki Kurihara             2-3-1, Otemachi, Chiyoda-ku, Tokyo             Inside Telegraph and Telephone Corporation (72) Inventor Hiroshi Yao             2-3-1, Otemachi, Chiyoda-ku, Tokyo             Inside Telegraph and Telephone Corporation F-term (reference) 5K030 GA11 GA14 JA07 KA01 KA02                       KA07 LB05 LD17                 5K033 AA03 BA11 BA13 DA01 DB14

Claims (5)

[Claims] 1. A QoS service system for a communication network composed of a plurality of partial networks, wherein a network control device is provided in each of the partial networks, and a QoS service is provided for each range of the deployed partial networks under respective service conditions. A QoS service initiation interface for providing QoS, and a QoS service database for registering QoS service implementation information from the network controller.
A service registration interface and a QoS service search interface for searching for a QoS service. A path analysis function for determining a communication path based on information from an activation source, a database search function for calling a QoS service search interface of a QoS service database to search for a QoS service, and the network control device It has a network controller calling function for calling the QoS service start interface to start the QoS service, and the network controller uses the QoS service registration interface to send the QoS service database. Register the QoS service providing section and the QoS service conditions, integration Q
The integrated QoS service device specifies the communication route by the route analysis function upon the call of the QoS service activation interface, and searches the QoS service by using the communication route and the QoS service condition as keys by the database search function and the QoS service database. QoS control of the entire communication network by activating the QoS service of each partial network by the network control device calling function to the network control device of each partial network that provides the QoS service suitable for
A QoS service system characterized by setting a service. 2. A QoS service setting method for a communication network composed of a plurality of partial networks, wherein a network control device is provided in each of the partial networks, and QoS is provided under each service condition for the range of the deployed partial networks. A QoS service starting interface for providing a service, and a QoS service database for registering QoS service implementation information from the network controller.
A service registration interface and a QoS service search interface for searching for a QoS service. A path analysis function for determining a communication path based on information from an activation source, a database search function for calling a QoS service search interface of a QoS service database to search for a QoS service, and the network control device It has a network controller calling function for calling the QoS service start interface to start the QoS service, and the network controller uses the QoS service registration interface to send the QoS service database. Register the QoS service providing section and the QoS service conditions, integration Q
The integrated QoS service device specifies the communication route by the route analysis function upon the call of the QoS service activation interface, and searches the QoS service by using the communication route and the QoS service condition as keys by the database search function and the QoS service database. QoS control of the entire communication network by activating the QoS service of each partial network by the network control device calling function to the network control device of each partial network that provides the QoS service suitable for
A QoS service setting method characterized by setting a service. 3. A QoS service setting method for a network system, comprising: a plurality of partial networks each having a QoS service function; and each partial network being provided with a network control device for managing and controlling the partial network. An integrated QoS service device that integrally manages the QoS service of the entire system, and a QoS that registers information about the QoS service that each partial network can provide.
S service database is provided, the network control device of each partial network is provided with an interface for activating a QoS service in the network system, and the partial service is provided from the network control device of each partial network to the QoS service database. Transmitting each possible QoS service information and storing the QoS service information in the QoS service database; and when the QoS service setting request is made to the integrated QoS service device, the integrated QoS service device determines
Qo requested for the setting to the service database
The step of performing a search for the S service and determining whether or not the QoS service can be set, and when the requested QoS service can be set, the integrated QoS service device determines whether the QoS service setting is requested within the section. The step of instructing the network control device of the partial network to set the QoS service, and the network control device receiving the QoS service setting instruction, the communication path in which the QoS service is secured based on the received instruction content. A method for setting a QoS service of a network system, characterized in that: 4. The QoS service setting method for a network system according to claim 3, wherein in the step of registering the QoS service of each of the partial networks, the partial network identifier and the QoS service are registered as the QoS service information. A QoS service setting method for a network system, comprising at least a provision section and a QoS service condition including a content of a QoS service that can be provided and a condition for providing the service. 5. The QoS service setting method for a network system according to claim 3, wherein the QoS service setting request made to the integrated QoS service device includes a setting request source address and a destination address, At least a QoS service condition is included, and the integrated service device specifies a section for which a QoS service is requested from the address, and specifies the specified QoS.
QoS using service request section and QoS service condition
A method for setting a QoS service of a network system, characterized by searching an S service database.