KR100243671B1 - Permanent virtual connection service - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a leased line virtual connection service method in an asynchronous delivery mode switching system.

2. The technical problem to be solved by the invention

The present invention, by increasing the efficiency of the telecommunications manager network system and shortening the service preparation time by automating the end-to-end dedicated line virtual connection service at the same time to improve the customer satisfaction, to provide a user-friendly and intelligent management environment box.

3. Summary of Solution to Invention

In the present invention, the administrator determines a virtual path identifier value not used in the corresponding user-to-manganese interface, and randomly assigns a virtual channel identifier value in the case of a virtual channel connection, receiving a response from the agent manager; Instructing the agency manager, receiving a command result from each agent manager, and receiving a response from the agent manager and sending it to the telecommunications manager network operator and ending.

4. Important uses of the invention

The present invention is used in an asynchronous delivery mode switching system.

Description

How to service leased line virtual connections in an asynchronous delivery mode switching system

The present invention relates to a plurality of asynchronous transfer mode (ATM) exchanges in which a manager system is interworked with several agent manager systems in a telecommunications management network for managing a plurality of asynchronous transfer mode (ATM) exchanges. The present invention relates to a permanent line virtual connection service method.

In the past, the operator of the network center managing several exchanges manually finds the outgoing exchange and the destination exchange with the link (trunk) connection data and the subscriber acceptance status data during the exchange period, and determines the relay exchange, the originating, and the destination link between them. Then, when notifying the operator who manages the exchange by telephone or the like, the operator of each exchange set up the connection by designating the link, virtual path identifier, and virtual channel identifier (VCI) of the exchange.

All of these steps are manual, which not only increases the possibility of error, but also requires a lot of time to establish the connection, and it is difficult to check the overall result.

In addition, the telecommunication manager network system does not currently have a routing system by automatic translation of the calling party and the called party's subscriber number in the leased line virtual connection service. A path identifier (VPI) and a virtual channel identifier (VCI) are specified.

In addition, by introducing a Switched Virtual Connection (SVC) setting method using a signaling method of an asynchronous transfer mode (ATM) exchange to establish a leased line virtual connection, a single command of a telecommunication manager network operator can be executed. End-to-End) There is a method and procedure for establishing a dedicated line virtual connection, but in this case, when selecting a connection route, the route must be set step by step from the originating exchange to the destination exchange to establish the connection to the exchange. The order is important when ordering, and it takes a lot of time.

In conclusion, in the related art, the fact that the connection path is set manually and the operator has to send a command to each exchange is mostly solved by an automation scheme incorporating the concept of signaling.

However, in the private line virtual connection establishment method of the signaling concept, first, the connection paths are sequentially determined from the originating exchange to the intermediate exchange and the destination exchange, and second, there is no available band management for the links on the connection path. When setting up one end-to-end connection, if the setting time for one exchange is T and the number of relay exchanges is N, the time of (N + 2) * T including the connection setting of the originating exchange and the destination exchange in the total connection Fourth, if a connection path is not found in any relay switch during the step-by-step connection setup, there is a problem in that unnecessary connection with the switch is caused because all connection settings are canceled up to that point.

Accordingly, the present invention has been made to solve the problems described above, by increasing the efficiency of the telecommunications manager network system and shortening the service preparation time by reducing the time while automating the end-to-end dedicated line virtual connection service procedure The purpose of the present invention is to provide a private line virtual connection service method of an asynchronous delivery mode switching system that improves satisfaction and provides a user-friendly and intelligent management environment.

1A is a structural diagram illustrating an interworking relationship between a telecommunications manager network manager system and an agent manager system for managing a plurality of asynchronous delivery mode exchanges to which the present invention is applied;

1B is a structural diagram showing a connection between an Asynchronous Exchange Mode (ATM) exchange under management of an agent system and a proxy manager system of a telecommunications manager network to which the present invention is applied.

Figure 2 is a block diagram showing a manager system and proxy manager system of the telecommunications manager network to which the present invention is applied.

3A to 3B are explanatory diagrams for explaining manager side information and interworking procedures necessary for operation between a manager system and an agent manager system of a telecommunication manager network to which the present invention is applied;

4 is a flowchart illustrating a leased line virtual connection service method in a manager system of a telecommunications manager network according to an embodiment of the present invention;

* Explanation of symbols for the main parts of the drawings

101: manager 102, 113: outgoing subscriber

103, 115: incoming subscriber

104, 105, 106, 114, 116, 117: asynchronous delivery mode exchange

107, 108, 109: management agent 110, 111, 112: connection path

201, 207, 212, 217: workstation 102: manager system

203: Telecommunications manager network operator 204: Message transfer function block

205: Management behavior processing function block 206: Disk

208, 213, 218: management agency

209, 214, 219: Network Element Management Agent Subsystem

210, 215, 220: management agent and exchange period connector subsystem

211, 216, 221: asynchronous delivery mode exchange

According to the present invention for achieving the above object, a manager receives a dedicated line virtual connection request from a telecommunications manager network operator, determines an originating and terminating exchange, and a user-network interface number to which a corresponding subscriber is connected. Determining a virtual path identifier (VPI) value that is not used in the user-to-network interface, and optionally assigning a virtual channel identifier (VCI) value in the case of a virtual channel (VC) connection; Determining whether the destination exchange is the same, requesting the agent to establish a virtual connection from the user-manganese interface to the user-manganese interface, and receiving a response from the agent. A second step of doing; As a result of the determination in the second step, when the originating and terminating exchanges are not the same, the connection path between the originating exchange and the terminating exchange period is determined, a series of links that can accommodate the required band on the connection path is determined, and each link is determined. Determining a virtual path identifier and a virtual channel identifier not used on the mobile station, instructing an agent, and receiving a command result from each agent manager; And a fourth step of receiving a response from the proxy manager and transmitting the response to the telecommunications manager network operator.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to FIGS. 1A to 4.

FIG. 1A is a structural diagram illustrating an interworking relationship between a telecommunication manager network manager system and an agent system for managing a plurality of asynchronous delivery mode exchanges to which the present invention is applied.

As shown in the figure, when a manager system 101 of a telecommunications manager network receives a request for a leased line virtual connection service, the switch 104 to which the originating subscriber 102 belongs and the incoming call are based on the information held by itself. The exchange 105 to which the subscriber 103 belongs belongs is determined, and the connection path between the originating exchange 104 and the destination exchange 105 is selected. If the relay path 106 is needed as a result of the connection path selection, the connection paths are P1 110 and P2 111.

The selection of this connection path is the case where the number of relay exchanges among the paths available from the originating exchange to the destination exchange is smallest and there is available band on the link.

When the connection path is determined, the link of the link on the connection path is selected and an unused virtual path identifier (VPI) or virtual path identifier (VPI) / virtual channel identifier (VCI) value on the link (connection) is selected. Path, link, and virtual path identifier (VPI) / virtual channel identifier (VCI) selection procedures are described in detail with reference to FIGS. 3A-3B).

When the originating, receiving and relay exchanges are determined in this way, the manager 101 issues a connection establishment command to the agent managers 107, 108, and 109 managing the exchanges, and when the results are summarized, An end-to-end leased line virtual connection from 102 to the called party 103 is established.

FIG. 1B is a diagram illustrating a connection between an Asynchronous Exchange Mode (ATM) exchange under management of a manager system and an agent system of a telecommunication manager network to which the present invention is applied.

As shown in the figure, an asynchronous transfer mode (ATM) exchange uses a user-network interface (uni), which is an interface for accepting subscribers, and a network-node interface (NNI), which is an interface between exchanges. Have

When the calling party 113 is connected to an asynchronous delivery mode (ATM) exchange B 114 and the called party 115 is connected to an asynchronous delivery mode (ATM) exchange C 116, the virtual between the calling party and the called party is The connection may consist of a connection between an asynchronous delivery mode (ATM) exchange B 114 and an asynchronous delivery mode (ATM) exchange C 114.

If there is insufficient bandwidth in the network-to-network interface link between them, the connection will be established via another Asynchronous Transfer Mode (ATM) exchange A (117).

At this time, the asynchronous transfer mode (ATM) exchange A 117 is referred to as a relay exchange. The connection established via this relay exchange is indicated by a dotted line in the figure.

2 is a block diagram illustrating a manager system and an agent system of a telecommunication manager network to which the present invention is applied.

As shown in the figure, the manager 202 present in the workstation 201 receives a message forwarding function block (MFF) when a request for leased line virtual connection service comes from the telecommunications manager network operator 203. Block 204 receives it and forwards it to a manager Operation Handling Function Block (MOHF) 205. The management action processing function block 205 retrieves the information 206 owned by it to find the calling exchange 211 and the called exchange 221, and the user-network interface (uni) and the virtual path to which the calling subscriber and the called subscriber belong. Determine an identifier (VPI) or virtual path identifier (VPI) / virtual channel identifier (VCI).

The management action processing function block 205 then again determines the connection path, link and virtual path identifier (VPI) or virtual path identifier (VPI) / virtual channel identifier (VCI) between the originating exchange 211 and the destination exchange 221. Decide

The management action processing function block 205 acts as an agent 208 (existing in the workstation 207) for managing the originating exchange 211 and the agent manager managing the destination exchange 221 according to the result. (agent) 218 (present at workstation 217) and agent 213 (present at workstation 212) managing the relay exchange 216 at the same time to issue a connection establishment command.

In each of the agents 208, 213, and 218 requested by the manager 202, the network element agent subsystem (NEAS) 209, 214, and 219 receives and manages them. The agent and the exchange period connector subsystem (CASS: 210, 215, 220) is sent to the management agent and the exchange period connector subsystem (210, 215, 220) to assemble the relevant information and asynchronously delivered. To the mode (ATM) exchange 211, 216, 221.

The response of the asynchronous delivery mode (ATM) exchange 211, 216, 221 is again sent to the network element management agent subsystem 209, 214, 219 via the management agent and the exchange period connector subsystem 210, 215, 220. Is passed to the manager 202 again.

The management action processing function block 205 receiving the responses of the respective agents 208, 213, and 218 aggregates the response message results, and if the response result of all agents is successful, the message transfer function. The block 204 responds with a success to the telecommunications manager network operator 203, and if any agent responds with a failure, it responds with a failure.

3A to 3D are explanatory diagrams for explaining manager-side information and an interworking procedure required for operation between a telecommunication manager network manager system and an agent system to which the present invention is applied.

A manager stores its own connection information between asynchronous transfer mode (ATM) exchanges managed by agents under its management.

There is no such information in the information represented as managed objects in the telecommunications manager network. Therefore, you should build your own database. The data types and values required for this are explained through examples.

The manager receives the calling party number, the called party number, the connection unit (virtual path (VP) connection or virtual channel (vc) connection) and the request band (forward and reverse) when requesting a connection from the subscriber.

In this example, the calling party number is 042-234-5678, the called party number 051-345-6789, the connection unit is a virtual channel (vc), and the required band is 20Mbps in both directions.

As shown in FIG. 3A, subscriber number information includes an exchange name 301, an area code 302 to which the exchange belongs, a subscriber number 303, and a subscriber-to-network interface (uni) number 304 per subscriber. Is it.

When the manager receives the subscriber's connection request, the manager cuts out the area code for the calling subscriber number and finds corresponding exchanges. In this example, since the calling party number is 042-234-5678, exchange B is found through area code 042. It then searches to see if subscriber number 234-5678 belongs to the exchange, and if so finds the corresponding user-network interface (uni) number.

In this example, the user-manganese interface (uni) number is zero. If the same procedure is followed for the called party number, the exchange becomes C, the user-manganese interface (uni) number is zero.

As such, when the user-network interface (uni) number is determined, the virtual path identifier (VPI) / virtual channel identifier (VCI) value should be determined. Since the user-manganese interface (uni) does not pre-assign a virtual path (VP) connection to a signaling virtual connection (SVC), the signaling-based virtual connection (SVC) and the leased line virtual connection service (PVC) are used. One rule is required to distinguish the virtual path identifier (VPI) numbers.

As shown in FIG. 3B, the user network interface information may be used for signaling virtual connection (SVC) for each user-network interface (uni) 306 of each exchange 305. Value range 307, and the leased line virtual connection service (PVC) uses a value outside this range as a virtual path identifier (VPI) value.

Accordingly, the usage value 308 is registered every time the dedicated line virtual connection service (PVC) is connected. In this example, there is no Virtual Path Identifier (VPI) value in use by the Private Line Virtual Connection Service (PVC), so we use the Virtual Path Identifier (VPI) 201 for the calling party and the Virtual Path Identifier (VPI) 301 for the called party. .

On the other hand, the virtual channel identifier (VCI) value does not have additional information because the virtual channel identifier (VPI) value is different, the virtual channel identifier (VCI) value may be less than 65,535.

That is, it can be arbitrarily selected by the manager. In this example, it is assumed that the calling party virtual channel identifier (VCI) is 1000 and the called party virtual channel identifier (VCI) is 2000.

As shown in FIG. 3C, the exchange period connection path information may be required when the relay exchange 311 is not needed and the relay exchange may be required to go from the source exchange 309 to the destination exchange 310.

In this example, the path connecting the exchange B belonging to the originating subscriber and the exchange C belonging to the called subscriber includes a path 312 that does not require the relay exchange and a path 313 that requires the relay exchange A.

In the case of multiple routes, the route with the lowest number of relay exchanges shall be selected. That is, the path 312 is selected.

As shown in FIG. 3D, the exchange period connection link information indicates that the exchange name 315 and the network-manganese interface of the exchange 314 indicate that information on the physical links actually connecting the exchanges represents information between two exchanges. Number 316, switch name 318 of another switch 317, and network-to-network interface number 319, total band 320, band 323 assigned to the virtual connection (SVC) by signaling, leased line It consists of data in the band 327 used for the virtual connection service (PVC), and the available band 331.

Here, the available band 331 is a value obtained by subtracting the band 323 allocated to the virtual connection (SVC) by the signaling method from the total band 320 and the band 327 used for the dedicated line virtual connection service (PVC).

Meanwhile, the total band 320 is divided into a forward band 321 and a reverse band 322. The band information allocated to the virtual connection SVC by the signaling method stores information of a virtual path VP connection set in advance for the virtual connection SVC by the signaling method.

That is, there are virtual path identifier (VPI) values 324, forward bandwidth 325, and reverse bandwidth 326 of virtual path (VP) connections.

The band information used in the dedicated line virtual connection service (PVC) also includes a virtual path identifier (VPI) value 328, a forward bandwidth 329, and a reverse bandwidth 330 used by the dedicated line virtual connection service (PVC).

The available band is also divided into a forward band amount 332 and a reverse band amount 333. The forward band amount 332 of the available band is a virtual connection by a signaling method in the forward amount amount 321 of the total band 320. The value is obtained by subtracting the forward bandwidth amount 324 allocated to the SVC and the forward bandwidth amount 328 used by the dedicated line virtual connection service (PVC).

The reverse band amount 333 is also calculated in the same manner. This example finds information 336 about the link connecting exchange B and exchange C. Here, the available bands are 15 Mbps in both the forward and reverse directions, but the required band is both 20 Mbps, so no connection can be established on this link.

In this case, return to FIG. 3C to find another route. In this example, there is a path 313 to exchange A as a relay exchange. Let's look at that again in Figure 3d. Looking at the available band of the link information 334 between the source exchange B and the relay switch A, more than 20Mbps remains in both directions, and more than 20Mbps remains on the link information 335 between the relay exchange A and the destination exchange C. That is, the connection can be set. Next, the virtual path identifier (VPI) and the virtual channel identifier (VCI) number to be used must be determined. The virtual path identifier (VPI) number finds a value that is not used as a signaling virtual connection (SVC) or leased line virtual connection service (PVC) connection on the link.

In this example, if link 1 (334) is used up to 4, a value of 5 is assigned. Since link number 335 is used up to number 3, number 4 is assigned. On the other hand, the virtual channel identifier (VCI) value does not have additional information because the virtual channel identifier (VPI) value is different, the virtual channel identifier (VCI) value may be less than 65,535. That is, it can be arbitrarily selected by the manager.

In this example, assume that the first link uses a virtual channel identifier (VCI) value of 100 and the second link uses a virtual channel identifier (VCI) value of 200.

The above result can be summarized as follows. The 20Mbps leased line connection setting in virtual channels (vc) to the called party with subscriber number 041-234-5678 to the called party with subscriber number 051-345-6789 is set to 0 on user-network interface (uni) of exchange B. Connect the virtual path identifier (VPI) 201, the virtual channel identifier (VCI) 1000, and the network-network interface 1 to the virtual path identifier (VPI) 5 and the virtual channel identifier (VCI) 100 at 20 Mbps. 20Mbps connects Virtual Path Identifier (VPI) 5, Virtual Channel Identifier (VCI) 100 to Network Interface 1 and Virtual Path Identifier (VPI) 4 and Virtual Channel Identifier (VCI) 200 to 20 Mbps. Switch C has a virtual path identifier (VPI) 4 at the network-to-network interface 1, a virtual channel identifier (VCI) 200 and a virtual path identifier (VPI) 301 at the user-network interface (uni) 0, and a virtual channel identifier (VCI). Connect 2000 at 20 Mbp.

That is, the manager sends commands simultaneously with the above interface and virtual path identifier (VPI) / virtual channel identifier (VCI) values and request bands to exchanges A, B and C, and aggregates the response results. Will output the results to the operator.

4 is a flowchart illustrating a leased line virtual connection service method in a manager system of a telecommunications manager network according to an embodiment of the present invention.

As shown in the figure, a manager receives a leased line virtual connection request from a telecommunications manager network operator (401). The request data at this time is the calling party number, called party number, request band and connection unit (virtual path (VP) connection or virtual channel (vc) connection).

When the request is received, the self-owned information is searched based on the calling party number and the called party number to find the exchange belonging to the calling party and the switching party to which the called party belongs, and the user-network interface (uni) number to which the subscriber is connected. 402).

Thereafter, a virtual path identifier (VPI) value that is not used in the corresponding user-manganese interface (uni) is determined, and in the case of a virtual channel (VC) connection, a virtual channel identifier (VCI) value is arbitrarily assigned. It is determined whether the called / exchanging exchange is found (404) and if it is the same, a virtual connection from the user-manganese interface (uni) to the user-manganese interface (uni) found above is provided to the agent that manages the exchange. Requires setup (405)

At this time, the data required for the request may include a connection unit, a calling user-network interface (uni) number, a virtual path identifier (VPI) value (or a virtual path identifier (VPI) value if the connection unit is a virtual channel (vc) connection), and Virtual channel identifier (VCI) value, called user-to-network interface (uni) number, virtual path identifier (VPI) value (or virtual path identifier (VPI) value and virtual if the connection unit is a virtual channel (vc) connection) Channel identifier (VCI) value) and required band.

When the connection result from the agent (agent) is received (406) it is delivered to the telecommunications manager network operator (407) and ends.

Outgoing exchange comparison result (404) If the originating exchange and the destination exchange are different, the connection path between the originating exchange and the incoming exchange period is determined (408). There may be N relay exchanges on the connection path (N> = 0). Next, a series of links that can accommodate the required band on the connection path is determined (409).

In other words, the links with available bands are selected one by one at the originating exchange, between the first and second relay exchanges, and at the Nth relay exchange.

A virtual path identifier (VPI) that is not used on each link is then determined (in the case of a virtual channel (vc) connection, the virtual channel identifier (VCI) is arbitrarily assigned).

Now that everything has been determined, the command is sent to the corresponding agent (411).

That is, a connection establishment command is simultaneously issued to each agent manager who manages the originating, terminating, and relay exchanges based on the content determined above. In this case, the simultaneous is not a broadcast type, and is a simultaneous in the sense that a connection setting command having different parameters is sent to the corresponding agent regardless of the response result of the other agent, that is, in any order. .

Then, when all the responses of the agents (agents) are received (412), the results are synthesized (413), and sent to the telecommunications manager network operator (407).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

In the present invention as described above, first, by accepting the service request by the originating, calling party number in the dedicated line virtual connection service, the telecommunications manager network operator is a single-to-end dedicated line virtual connection setting is made with a single command, second, origination The manager determines the relay exchange that passes on the path from the exchange to the destination exchange, which is more efficient than the step-by-step decision for each exchange. Although it was not possible, by enabling this, it is assured of the establishment of the connection. Fourth, in the case of the step-by-step connection establishment, the setting time for one exchange when setting one end-to-end connection is T, and the number of relay exchanges is N, The connection takes as long as (N + 2) * T, including the establishment of the connection between the calling and terminating exchanges. It takes only about T time because multiple connection commands are issued at the same time. Fifth, by determining the connection path at once and managing the available bands of each link, in case of connection establishment failure due to lack of available band at one exchange. Can be prevented, and as a result, the load on the exchange can be reduced.

Claims (4)

The manager receives the leased line virtual connection request from the telecommunications manager network operator, determines the originating and terminating exchange, the user-network interface (uni) number to which the subscriber is connected, and the corresponding user-network interface (uni). Determining a virtual path identifier (VPI) value which is not used in the step, and optionally assigning a virtual channel identifier (VCI) value in the case of a virtual channel (vc) connection; Determining whether the originating exchange is the same, requesting the agent to establish a virtual connection from the user-manganese interface (uni) to the user-manganese interface (uni) in the same case, and the agent manager (agent) Receiving a response from the second step; As a result of the determination in the second step, when the originating and terminating exchanges are not the same, the connection path between the originating exchange and the terminating exchange period is determined, a series of links that can accommodate the required band on the connection path is determined, and each link is determined. Determining a virtual path identifier and a virtual channel identifier not used on the mobile station, instructing an agent, and receiving a command result from each agent manager; And A fourth step of receiving a response from the agency manager and transmitting the response to the telecommunication manager network operator; Private line virtual connection service method of the asynchronous delivery mode switching system made, including. The method of claim 1, The first step is, The manager includes a fifth step of receiving a leased line virtual connection request from a telecommunications manager network operator; When the request is received, the self-owned information is searched based on the calling party number and the called party number to find the exchange belonging to the calling party and the calling party belonging to the called party, and the user-network interface (uni) number to which the subscriber is connected. step; And A seventh step of determining a virtual path identifier (VPI) value that is not used in the corresponding user-network interface (uni), and optionally assigning a virtual channel identifier (VCI) value in the case of a virtual channel (vc) connection; Private line virtual connection service method of the asynchronous delivery mode switching system made, including. The method of claim 2, The second step, An eighth step of confirming whether the originating exchange is the same; In the same case, a ninth step of requesting a proxy manager for managing the corresponding exchange to establish a virtual connection from the user-network interface uni to the user-network interface uni found above; And 10th step of receiving a response from an agent Private line virtual connection service method of the asynchronous delivery mode switching system made, including. The method of claim 3, wherein The third step, An eleventh step of determining a connection path between the originating exchange and the incoming exchange period if the originating exchange and the terminating exchange are different from each other. A twelfth step of determining a series of links that can accommodate the required band on the connection path; A thirteenth step of determining a virtual path identifier and a virtual channel identifier not used on each link; A fourteenth step of giving a command to the corresponding agent; A fifteenth step of receiving all of the agents' responses; And Step 16 to synthesize the results of the agency manager response Private line virtual connection service method of the asynchronous delivery mode switching system made, including.

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