KR20030072915A - method for setting Point To Point Permanent Virtual Connection of the low speed subscriber - Google Patents

Abstract

PURPOSE: A method for setting a PVC(Permanent Virtual Connection) of a point-to-point low speed subscriber is provided to set the PVC between the low speed subscriber and an ATM exchange subscriber, and to set the PVC between low speed subscribers by using an ATM exchange, thereby supplying an improved service to the low speed subscribers. CONSTITUTION: A system inputs parameters of a subscriber for setting a PVC(S1), and decides whether the inputted parameters are available(S2). If so, the system calls PPCCF(Point to Point PVC Control Software) as a remote procedure(S3). An ADD-PPVC(Add Point to Point PVC) thread decides whether the subscriber is a low speed subscriber(S4). If so, the ADD-PPVC thread is assigned with an originating resource for PVC setting(S5), and is assigned with a receiving resource by requesting the PVC setting to receiving PPCCF(S6), then requests a connection to a corresponding device(S7). Connection information is stored in a database, and an originating side is returned(S8). The system requests a connection setup to a GSMP(General Switch Management Protocol)(S9), and requests a PVC connection setup to an originating device(S10), then stores connected PVC connection setup information in another database(S11).

Description

Method for setting Point To Point Permanent Virtual Connection of the low speed subscriber}

The present invention relates to a method for establishing a permanent virtual connection (PVC) of a point to point low speed subscriber in an asynchronous transfer mode (hereinafter referred to as ATM) switching system.

The route service in ATM network converts the information transmitted through the unstructured or structured circuit into ATM cell to be transmitted through ATM network.

The path service method of the ATM network may be connected through a Switched Virtual Connection (hereinafter referred to as SVC) according to a signaling protocol conversion or may be connected by PVC.

In general, PVC is suitable for high speed subscribers using fixed lines, and SVC is frequently used for low speed subscribers using fixed lines.

On the other hand, the SVC is inexpensive in terms of cost, but the full-speed is low, while in the case of PVC, the data transmission speed is faster by transmitting data along a predetermined path. However, such PVC has been provided mainly for high speed subscribers.

On the other hand, in the case of low-speed subscribers, the need for the low-speed subscriber PVC connection has emerged as the point-to-point connection of the high speed subscriber or the low speed subscriber through the ATM switch.

An object of the present invention is to provide a method for setting a PVC of a point-to-point low-speed subscriber that can transmit / receive data with a high-speed subscriber or a low-speed subscriber in an ATM switching network by allocating a PVC according to a request of a low-speed subscriber. There is this.

1 is a system configuration block diagram for establishing a permanent virtual connection of a low speed subscriber in accordance with the present invention.

2 is a schematic conceptual diagram of a software controller for device control in the system shown in FIG.

3 is a general flow diagram of establishing a permanent virtual connection for a low speed subscriber in accordance with the present invention.

4 is a data flow diagram for establishing a permanent virtual connection between a low speed subscriber and an AIM subscriber according to another embodiment of the present invention.

5 is a diagram illustrating a permanent virtual connection establishment step between a low speed subscriber and a low speed subscriber according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: low speed subscriber terminal 20: AM

30 exchange system 31 exchanger

32-35: AIM36: SMC

37: ACC40: AM

41: AMC50: low speed subscriber terminal

A method for setting a PVC of a point-to-point low speed subscriber according to the present invention which achieves this object includes an access call controller for controlling an ATM switch and an ATM interface module at a workstation, and an access module for matching a low speed subscriber to the ATM switch. A method of setting a point-to-point low-speed subscriber PVC for a controlled access multiplex controller, wherein the operator receives incoming and outgoing subscriber information for setting a PVC, and is mounted and driven in the corresponding access-side access multiplex controller. Invoking the point PVC control software, and if the subscriber is determined to be a low-speed subscriber from the called point-to-point PVC control software, the calling and called party resources required for the PVC setup in the access call controller and the access multiplex controller. Receiving a step and the calling party Requesting the connection setup to the GSMP of the originating access call controller to set up the PVC between the originating and terminating ATM interface modules, if the called party resource is allocated; and between the originating and terminating ATM interface modules by the GSMP. When the PVC setting is made, requesting the PVC setting to the device of the accessing access module, and storing the device PVC setting information of the access module in the database of the access module.

In this way, the fixed mode of the point-to-point type between the subscriber and the network can be set and released. The configuration of the connection is a fixed mode connection (Virtual Connection for Permanent communications) that can be used permanently from the registration of the leased line service until the cancellation of service registration. The terminology used in the following embodiments uses the terminology used for the ACE 2000 ATM exchange for convenience, but the scope of rights is not limited thereto.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a system block diagram for setting a PVC between low-speed subscriber in accordance with the present invention. Referring to Fig. 1, a low speed subscriber terminal 10 (50) is provided with an access module 20 (40) for matching the low speed subscriber terminal 10 (50) to an exchange. Is connected to the exchanger system 30.

The exchange system 30 is composed of an ATM interface module 32-34 which interfaces each subscriber by switching between the ATM switch 31 and the switch.

In general, the connection between the high-speed subscriber in the ATM switching system 30 establishes the PVC by connecting the AIM corresponding to each high-speed subscriber in the center. On the other hand, when setting PVC between low-speed subscriptions, it is more efficient in system design to consider only the exchange system 30 than to consider each low-speed subscriber terminal.

Therefore, unlike the PVC setup between AIM subscribers, the low speed subscriber setup is performed three-step PVC setup work internally. That is, the process of setting the PVC between the calling AM and the calling AIM, setting the PVC between the called AM and the called AIM, and setting up the setting between the calling AIM and the called AIM.

2 is a conceptual diagram illustrating a software controller for device control according to the present invention.

As shown in the figure, it is dedicated to the interface of the access call controller (Access Call Controller (hereinafter referred to as ACC) 37) and the upper software module and the switch device to control the PVC setting between the AIM 32-35. A switch management controller (hereinafter referred to as SMC) 36 is provided, and an access multiplex controller (hereinafter referred to as AMC) 41 is provided to control the AM 40. do.

The low speed subscriber PVC setting method according to the present invention controls the ACC and AMC in the workstation to set the PVC for the point-to-point low speed subscriber.

3 is a general flow diagram of a PVC setup for a low speed subscriber in accordance with the present invention. As shown, the PVC setup for the low-speed subscriber is performed by the operator command and the following procedure is performed.

First, an ADD-PPVC (Add Point to Point Permanent Virtual Connection) thread for setting up PVC for low speed subscribers is run on the workstation by operator commands. The ADD-PPVC thread is the process responsible for setting the point-to-point PVC in the exchange system. Let's look at the procedure for setting up PVC on an ADD-PPVC thread.

The ADD-PPVC thread provides a screen window for setting the PVC for the low speed subscriber, and receives the subscriber's parameters for the PVC setting from the operator through the screen (S1). At this time, when the subscriber information of the low speed subscriber is input from the operator, first, the validity of each input parameter is determined (S2), and then the PPCCF (Point) mounted and driven in the calling party AMC to perform the PVC setting in the system is performed. to Point PVC Control Software) to the remote procedure (S3). On the other hand, the ADD-PPVC thread determines whether the subscriber is a low-speed subscriber from the subscriber information for setting the PVC input from the operator (S4), in the case of a low-speed subscriber connection, is assigned the calling party resources required for the PVC configuration (S5). In this case, the resource to be allocated may include a virtual path identifier / virtual channel identifier (hereinafter, referred to as VPI / VCI) for ATM PVC access. In case of PVC setting of low speed subscriber, additional PVC setting between AIM is performed internally in the system, so resource allocation should be made for not only the calling AMC but also the calling ACC. On the other hand, when the called party is a low speed subscriber, the called resource allocation uses the same method as the calling party. When the calling party resource is allocated, the ADD-PPVC thread requests the PVC setting to the called party PPCCF, allocates the called party resources necessary for the PVC setting (S6), and requests a connection to the corresponding device (S7).

When the connection request for the device is processed normally, the connection information is stored in the database of the ACC and returned to the calling party (S8).

Now, to establish a PVC between the AIM requires a connection setup to the GSMP (General Switch Management Protocol) of the originating ACC (S9). Next, the PVC connection setup request is requested to the calling device (S10), and the connected PVC connection setup information is stored in the database of the AM (S11). On the other hand, if it is not the low-speed subscriber to perform the PVC setting procedure for the high-speed subscriber (S12).

If the work at each step is not successful, the previous task is restored to its pre-work state and the PVC setup request fails. Outputs the results of establishing a PVC connection to a low speed subscriber.

4 is a data flow diagram for setting a PVC between a low speed subscriber and an AIM subscriber according to another embodiment of the present invention. Let's look at each process with reference to the accompanying drawings.

In FIG. 4, when the AM subscript is attached, it is a functional block of software mounted in AM, and the ACC subscript indicates a functional block of software mounted in ACC, and the term used in the ACE 2000 exchange is used. CRCF (Connection Resource Control Function Block) is a software module that is responsible for allocating / returning / changing common resources used for call processing.LIDHF (Library Interface Data Handling Function Block) is common when accessing call processing resources to external processors. This is a library software module.

First, ADD_PPVC makes a request for setting a PVC to AM_PPCF (S21). AM_PPCF requests resource allocation to ACC_LIDHFDP for resource allocation in ACC (S22). The ACC_LIDHF requests resource allocation from the ACC_CRCF (S23), and accordingly, the ACC_CRCF allocates the resource and notifies the ACC_LIDHF of the resource allocation to the corresponding request (S24). ACC_LIDHF again informs AM_PPCF of this notification result (S25). The AM_PPCF requests resource allocation from the AM_CRCF for resource allocation of the source AM (S26). The AM_CRCF allocates a resource corresponding to the request, stores it in the DB of AM, and informs AM_PPCF that the resource has been allocated (S27).

When resource allocation is made to the calling party in this way, resource allocation to the called party is performed. In this embodiment, since the case of the incoming call is considered to be a fast subscriber, the AM_PPCF requests allocation of the called party's resource for PVC allocation to the ACC_PPCF (S28). Accordingly, the ACC_PPCCF requests the resource allocation of the called party to the ACC_CRCF (S29) and notifies the ACC_PPCCF that the called party has been allocated (S30). Accordingly, the ACC_PPCCF stores the allocated resource information in the DB of the ACC and notifies the AM_PPCCF that the called party resource has been allocated (S31).

When the called party's resources are allocated, AM_PPCCF requests the PVC connection to the originating ACC_GSMP to establish the PVC between the AIMs (S32), and ACC_GSMP allocates the resources for the connection establishment and transmits the result to the AM_PPCCF (S33).

If the resources of the calling party and the called party are allocated in the AM and the ACC through the above-described process, the AM_PPCF requests the AM device setting from the AM_DC (S34), and accordingly, the AM_DC sets the device and the set items. This is stored in the DB of AM and notified to AM_PPCF (S35).

When all processes of the PVC are finished, AM_PPCF notifies the ADD_PPVC that the PVC is set (S36).

5 is a diagram illustrating a PVC setting step between a low speed subscriber and a low speed subscriber according to another embodiment of the present invention.

Referring to Figure 5, when a command for setting the PVC from the operator is input to the PPCCF module of the workstation (S41), the PPCCF module requests the resource allocation of the calling party through the AMC and ACC (S42, S43), ACC Allocates resources. Meanwhile, the called party also requests resource allocation of the called party through the AMC and the ACC as the subscriber is a low speed subscriber (S44 and S45). When the resource of the called party is allocated, a request for setting of the called AM device is requested (S46), and if the AM device is set, the calling party AMC is notified that it is set (S47). As such, when resource allocation is made to the calling party and the called party, the AMC requests the ACC to perform resource allocation for the connection between the calling party and the AIM of the called party to the GSMP by the SMC (S48_1-S48_4). In this way, when resources at the calling party and the called party AM and AMC are allocated, the device setting of the calling party AM is requested, and the settings are stored in the DB of the AM (S49), and the result is reported to the workstation's PPCCF module. Give it (S50).

According to the present invention, it is possible to set the PVC between the low speed subscriber and the ATM exchanger, and furthermore, by enabling the PVC setting using the ATM exchanger between the low speed subscriber and the low speed subscriber, it is possible to provide more improved services to the low speed subscriber. .

Claims (3)

At the workstation, the access call controller (ACC) controls the ATM switch and ATM interface module (AIM) and the access multiplex controller (AMC) controls the access module (AM) for matching low speed subscribers to the ATM switch. In a method for setting a point-to-point low-speed subscriber PVC, Receiving point-and-point PVC control software which is mounted and driven in the caller access multiplex controller, receiving caller and caller information for setting the PVC from the operator; When the subscriber is determined to be a low-speed subscriber from the called point-to-point PVC control software, receiving caller resources and called party resources required for PVC setup in an access call controller and an access multiplex controller; Requesting the connection establishment to the GSMP of the originating access call controller for the PVC setup between the ATM interface modules of the calling party and the called party when the calling party and the called party resources are allocated; When the PVC setting is made between the ATM interface modules of the calling party and the called party by the GSMP, requesting the PVC setting to the device of the calling party access module; And storing the device PVC setting information of the access module in a database of the access module. The method of claim 1, In the step of assigning a calling party resource and a called party resource, when the called party subscriber is a low speed subscriber, to receive a called party resource, Receiving information for setting the PVC from the operator and calling the point-to-point PVC control software mounted and driven in the corresponding called party access multiplex controller; If the subscriber is a low-speed subscriber from the called point-to-point PVC control software, performing the step of allocating the resources necessary for setting the PVC from the access call controller and the incoming access multiplex controller; Requesting a PVC connection to the destination access module device when the PVC setting is made between the ATM interface module of the calling party and the called party by requesting the connection establishment to the GSMP of the access call controller; And storing the PVC connection setting information of the called party access module device in a database of the called party access module. The method of claim 1, wherein in the step of allocating the necessary source and destination resources, To be allocated outgoing resource, Requesting resource allocation from the point-to-point PVC control software of the called outgoing access multiplex controller to an access call controller; Storing resource information allocated by the access call controller in a database of an access call controller; And storing the resource information allocated by the access call controller in a database of an access module.