KR20030056298A - Method for invoking vb5.1 interface in access networks and switching networks - Google Patents

Abstract

PURPOSE: A VB5.1 interface driving method in a subscriber network and a B-ISDN(Broadband-Integrated Service Digital Network) provide a VB5.1 interface method of provisioned allocation as to VP/VC in the subscriber network and B-ISDN. CONSTITUTION: According to the VB5.1 interface driving method of a subscriber network and a B-ISDN system including a system operation management part(21) and a VB5 protocol part(22), the VB5 protocol part initializes the whole system by receiving a VB5 driving request from the system operation management part. A provision as to a corresponding interface is constituted. An internal connection setting as to a corresponding interface between an optical line terminal(OLT) and an optical network unit(ONU) is executed. An internal connection of virtual path connection/virtual channel connection for RTMC is set. A permanent virtual connection(PVC) between a physical user port and a physical service port is executed. After completing the permanent virtual connection, the end of provision is informed and a driving as to the corresponding interface is requested, and the driving result is waited. And when the driving is ended successfully, a service as to the corresponding interface begins. If there is additional provision, the above steps are repeated, and if there is no additional provision, the driving ends.

Description

METHOD FOR INVOKING VB5.1 INTERFACE IN ACCESS NETWORKS AND SWITCHING NETWORKS in Subscriber Networks and Broadband Telecommunication Networks (Ｂ-ISDN)

The present invention provides a provision for VP / VC in a subscriber network and a B-ISDN switching network when a subscriber network and a Broadband-Intergated Service Digital Network (B-ISDN) switching network are connected based on a VB5.1 interface. Provisioned) relates to a startup method for the VB5.1 interface of assignment.

In general, when the subscriber network and the B-ISDN switching network support the permanent virtual connection (PVC) using the VB5.1 interface, the subscriber network and the B-ISDN switching network provide a VB5.1 based interface to provide the VB5.1 service. An internal method of starting is required. In order to support this activation method, a signaling exchange related to provisioning and connection establishment between a plurality of functional blocks is generated in a system of a subscriber network and a B-ISDN switching network. More specifically, the present invention relates to an internal signaling method for controlling a VB5.1 interface activation process between a plurality of functional blocks in a system of a subscriber network and a B-ISDN switching network, and belongs to the system technical field of a communication network.

In the prior art, since there was no SNI-based subscriber network supporting the VB5 interface, the B-ISDN subscriber directly connected to the switching network using PVC.

In other words, SNI was not applied between the subscriber and the B-ISDN switching network.

However, a subscriber network based on ADSL has emerged, and an SNI based on a V5 interface is applied between the subscriber network and a PSTN (or N-ISDN) switched network, and in the future, based on the VB5.1 interface. SNI may be applied.

Therefore, in order to support the VB5.1 interface in the subscriber network system consisting of the system operation management function block, the VB5 protocol function block, and the supervisory control function block, signaling procedures related to provisioning and connection establishment between these function blocks are required. Do.

The present invention has been proposed in order to meet the above-mentioned conventional requirements, and its object is that when a subscriber network and a Broadband-Intergated Service Digital Network (B-ISDN) exchange network are connected based on a VB5.1 interface, The present invention provides a method of initiating provisioning of VB5.1 interfaces for VP / VC in subscriber networks and B-ISDN switching networks.

1 is a schematic configuration diagram of a subscriber network and a broadband integrated information network (B-ISDN).

2 is a block diagram illustrating a VB5 interface device of a subscriber network and a B-ISDN switched network system according to the present invention.

3 is a flowchart illustrating a VB5.1 interface activation process in a subscriber network and a B-ISDN switching network system according to the present invention.

4 is a flowchart illustrating a VB5.1 interface activation process in a subscriber network and a B-ISDN switching network system according to the present invention.

* Description of the symbols for the main parts of the drawings *

21: System operation management unit 22: VB5 protocol unit

23: supervisory control unit 231: SNI supervisory control unit

232: ODN supervisory control unit

The present invention provides a method for activating a 5.1 interface of a subscriber network and a broadband integrated information network (B-ISDN) switching network system including a system operation management unit and a VB5 protocol unit as a constituent means for achieving the above object.

A) initializing the entire system by receiving the VB5 start request from the VB5 protocol unit from the system operation management unit;

B) configuring provisioning for the interface;

C) executing an internal connection setting for a corresponding interface between the optical termination device and the optical communication network unit;

D) establishing an internal connection of the virtual path connection / virtual channel connection (VPC / VCC) for the RTMC;

E) establishing a permanent virtual connection (PVC) connection between the physical user port and the physical service port;

F) notifying the end of provisioning after completing the PVC connection, requesting the start-up of the interface, waiting for the start-up result, and starting the service for the interface when the start-up is successfully completed; And

G) Check if there are additional provisions in other interfaces, and if there are additional provisions, repeat from step b) above and terminate if no additional provisions are required.

In general, the VB5 interface can be divided into two types: the VB5.1 interface supported by the PVC method and the VB5.2 interface supported by the SVC method.

As described above, the present invention consists of two types of system operation management function block, VB5 protocol function block, and supervisory control function block, and so on in a VB5.1-based subscriber network and B-ISDN switching network system, provision, connection establishment. And start-up detailed control process to solve the startup method for the VB5.1 interface.

1 is a configuration diagram of a subscriber network and a B-ISDN switching network system to which the present invention is applied, and includes a subscriber station 11, an optical network unit (ONU) 12 of a subscriber network, and an optical link of a subscriber network. It consists of an Optical Distribution Network (ODN) 13, an Optical Line Terminal (OLT) 14 of a subscriber network, and a B-ISDN Exchange (hereinafter referred to as LE) 15. .

The B-ISDN LE 15 and the optical terminator 14 are usually interconnected by STM-1 or STM-4C, and the optical terminator 14 and the optical communication network unit 12 are typically interconnected by STM-4C. Connect. The subscriber station 11 and the optical communication network unit 12 are interconnected by copper, xDSL, E1 and the like. In addition, the ODN 13 is a network for interconnecting the optical termination device 14 and the optical communication network unit 12, a point-to-point method and a point-to-multipoint Can be constructed in a

FIG. 2 is a diagram illustrating a VB5 interface device of a subscriber network and a B-ISDN switching network system configured as described above. The system management unit (SOFB) 21 performs an overall operation and management function of the system, and an RTMC. Only the VB5 protocol unit (VPFB) 22 which performs the relevant VB5 protocol function, and the supervisory control unit 23 which performs supervisory control, such as shape and fault with respect to line cards, are shown.

In the above description, the monitoring control unit 23 is separated into an SNI monitoring control unit (SSFB) 231 and an ODN monitoring control unit (OSFB) 232 for convenience.

In addition, the system operation management unit 21 is in charge of the operation instruction interpretation unit (SCAU) 21a for retrieving the system operation instruction structure, the message dispatch unit (SMDU) 21b for distributing the message, and VB5 self-operation management. A VB5 operation management unit (SVOU) 21c, a system connection control unit (SCCU) 21d that provides a system-level connection control function, and the VB5 protocol unit 2 provides a system management function of VB5 itself. VB5 system management unit (VSMU) 22a, VB5.1 (RTMC) unit (RTTU) 22b providing RTMC protocol function, VB5.2 (B-BCC) unit (VBBU providing B-BCC protocol function) 22c), and the SAAL higher layer unit (VSUU) 22d that provides the SSCOP and SSCF protocol functions, and the SNI monitoring controller 231 provides the SAAL lower layer unit (SSLU) (which provides the AAL and SAR protocol functions). 231a) and SNI connection providing supervisory control function for SNI related line cards The control unit (SSCU) 231b is configured, and the ODN supervisory control unit 232 is configured as an ODN connection control unit (OSCU) 232a that provides a supervisory control function for ODN related line cards.

The system operation management unit 21, the VB5 protocol unit 22, and the SNI monitoring control unit 231 are functional blocks applicable to the subscriber network and the B-ISDN switching network system, and the ODN monitoring control unit 232 is a subscriber network system. Only applicable function blocks.

In order to apply the present invention to the system having the above configuration, some assumptions are set as follows, and these assumptions should be applied as it is in actual operation.

First, all initial provisioning (including configuration management information) information about the VB5 interface before booting of the system is maintained by the system operation management unit 21.

Second, the activation request of the system operation management unit 21 for the VB5.1 interface is made to one interface at a time.

Third, unlike V5, the interface identifier information used in the present invention is not information exchanged with each other in the SNI signaling method between the B-ISDN LE 15 and the subscriber network, and each subscriber network supports a plurality of VB5 interfaces. Information used by itself to refer to the VB5 interface.

Fourth, in the configuration of the VB5 protocol unit 22, there may be logic for confirming the conversion and status of the configuration management information, etc. while the VB5 system management unit 22a and the RTMC unit 22b process the related control. In order to prevent duplication of configuration management information, the responsibility for the management of the information (configuration management information) is replaced by the VB5 protocol unit 22 when the system operation management unit 21 and the VB5 protocol unit 22 are run on the same processor. The system operation management unit 21 has. However, when the system operation management unit 21 and the VB5 protocol unit 22 are run on different processors, the VB5 protocol unit 22 instead of the system operation management unit 21 is responsible for managing the configuration management information and is required. If the system operation management unit 21 to notify.

Fifth, provisioning methods for VB5 operation include default provisioning which stores provisioning information in its own memory without downloading provisioning information, and downloading provisioning which downloads provisioning information from its own function without storing provisioning information in its own memory. However, the present invention excludes the default provisioning method for effective VB5 operation.

According to the above conditions, the process of the present invention made in the apparatus of FIGS. 1 and 2 is roughly summarized as follows.

1. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 receives a VB5 start request from the VB5 operation management unit (SVOU) 21c of the system operation management unit 21. At this time, the method for generating a start request in the system operation management unit 21 is an internal implementation dependency.

2. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 completes the VB5 entire system related initialization state.

3. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 requests the VB5 operation management unit (SVOU) 21c of the system operation management unit 21 to start provisioning for the associated interface.

4. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 notifies the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 of the termination of provision for the interface.

5. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 completes the initialization state for the corresponding VB5.1 interface.

6. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 is the VB5 operation management unit (SVOU) 21c of the system operation management unit 21, and the optical termination device 14 and the optical communication network unit ( 12) Requests to establish internal connection for the corresponding interface.

7. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 is the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 and the optical termination device 14 and the optical communication network unit 12. It informs you of the result of the internal connection setup for the interface.

8. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 is a VB5 operation management unit (SVOU) 21c of the system operation management unit 21 and the virtual path connection / virtualization for RTMC for the corresponding interface. Request to establish a channel connection (VPC / VCC).

9. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 is the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 and the internal connection of the VPC / VCC for RTMC to the corresponding interface. Notify the setting result.

10. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 receives the successful provisioning result of the VPC / VCC for RTMC for the corresponding interface, and then connects the PVC between the corresponding physical user port and the physical service port. To the VB5 operation management unit (SVOU) 21c of the system operation management unit 21.

11. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 completes the PVC connection between the VPCI / VCI of the corresponding physical user port and the VPCI / VCI of the related physical service port, and then outputs the result of the VB5 protocol. The VB5 system management unit (VSMU) 22a of the unit 22 is notified.

12. The VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 notifies the VB5 operation management unit (SVOU) 21a of the system operation management unit 21 of the end of provision for the corresponding interface.

13. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 requests the startup of the corresponding interface to the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22.

14. Detailed startup after the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 receives the start request for the corresponding interface from the VB5 operation management unit (SVOU) 21c of the system operation management unit 21. The procedure applies the procedure set out in the G.967.1 Recommendation (Start-up Procedure in Section 13.3.4.1) and notifies the VB5 Operation Management Unit (SVOU) 21c of the System Operations Management Unit 21. Then start the service for the interface that has been successfully started.

15. At this time, the VB5 operation management unit (SVOU) of the VB5 protocol unit 21 requests provisioning to the VB5 operation management unit (SVOU) 21a of the system operation management unit 21 for provision of another interface. .

16. The VB5 operation management unit (SVOU) 21c of the system operation management unit 21 repeats the configuration operation in provisioning for the interface when provisioning for an additional interface is required. Finally, when provisioning is no longer necessary, the VB5 operation management unit (SVOU) 21c of the system operation management unit 21 requests the start end.

3 and 4 are flowcharts illustrating a method of activating a VB5.1 interface according to the present invention applied to a subscriber network and a B-ISDN switching network system.

Fig. 3 is a flow chart related to the activation of the VB5.1 interface to the system operation management unit 21 in the subscriber network and the B-ISDN switching network system as shown in Figs. 1 and 2.

As shown in FIG. 3, the VB5 operation management unit (SVOU) 22c of the system operation management unit 21 determines the start of the startup of the VB5 system at some stage after the system startup and sends the start request signal to the VB5 protocol unit 22. Are transmitted to the VB5 system management unit (VSMU) 22a (S1 to S4).

Next, the provision start signal is received, the provision data for the corresponding interface is configured, and the provision end signal is transmitted to the VB5 system management unit 22a of the VB5 protocol unit 22 (S5 to S9).

Then, after receiving the connection establishment request signal (S10), and performs the PVC connection command between the optical communication network unit 12 and the optical termination device 14 (S11), the optical communication network unit 12 and the optical termination device The connection establishment result signal between the two channels 14 is transmitted to the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 (S12 to S14).

Then, after receiving the RTMC connection setup request signal from the VB5 system management unit 22a, perform a connection setup command for the VPC / VCC for RTMC, and transmit the RTMC connection setup result signal to the VB5 system management unit 22a. (S15 to S19).

It is then in a standby state for establishing a physical user port (PUP) / physical service port (PSP) connection (S20), and then a VB5 system management unit 22a for performing a provisioned connection establishment of the VB5.1 interface. After receiving the connection setup signal between the PUP and PSP, and performs the connection setup between the PUP and PSP, and transmits the signal to the VB5 system management unit (22a) (S21 ~ S24).

After the connection setup between the PUP and the PSP is completed as described above, the terminal is in a waiting state for provisioning termination (S25, S26), and after receiving the provisioning termination signal from the VB5 system management unit 22a (S27), A start request signal for the VB5.1 interface is generated and transmitted (S28 and S29).

After the start request as described above, and waiting for the result (S30), when receiving the start result signal for the corresponding VB5.1 interface (S31), it is checked whether additional provisioning for another VB5.1 interface is necessary ( S32).

In the above, if no additional provision is required, a start end signal is generated and transmitted to the VB5 system management unit 22a (S34, S35), and the entire VB5.1 system transitions to a service state (S36).

On the contrary, if additional provisioning is needed, provisioning data for the corresponding VB5.1 interface is configured and then a provisioning end signal is transmitted (S30 to S33, S6 to S9).

Fig. 4 is a flowchart illustrating the activation of the VB5.1 interface of the VB5 protocol unit 22 according to the present invention in the subscriber network and the B-ISDN switching network system. The operation of the VB5 protocol unit 22 will be described with reference to this.

The VB5 system management unit 22a of the VB5 protocol unit 22 receives a start request message from the VB5 operation management unit 21c (S42), and then performs initialization for the entire VB5 system (S43). A vision start signal is generated and transmitted to the VB5 operation management unit 21c (S44 to S46).

Then, in the standby state (S46), when receiving the start end signal from the VB5 operation management unit (21c), the entire VB5.1 system transitions to the service state (S47, S48), to receive the provision end signal When (S49), performs the initialization operation for the corresponding VB5.1 interface (S50), and generates and transmits a connection setup request signal for the PVC connection between the optical communication network unit 12 and the optical termination device (14) (S51). , S52).

Subsequently, in the standby state, after receiving the connection establishment result signal between the optical communication network unit 12 and the optical termination device 14, the VB5 operation management unit 21c for requesting connection establishment for the VPC / VCC for RTMC. ) Transmits an RTMC connection setup request signal (S53 to S58).

Then, in the standby state, after receiving the RTMC connection establishment result signal, establishing a connection between the physical user port (PUP) and the physical service port (PSP) to perform the provisioned connection establishment of the VB5.1 interface. The signal is transmitted to the VB5 operation management unit 21c (S59 to S61).

Then, after receiving the connection establishment result signal between the physical user port (PUP) and the physical service port (PSP) and transmits a provision end signal (S62 ~ S65).

When receiving the start request signal for the VB5.1 interface (S66 to S68), the start result signal for the corresponding VB5.1 interface is transmitted by applying the procedure given in the G.967.1 Recommendation (starting procedure in Section 13.3.4.1). (S69 to 72).

As described above, the present invention has an excellent effect of supporting the 5.1 interface in the subscriber network and the broadband integrated communication network (X-ISDN).

Claims (8)

In the method of initiating the 5.1 interface of a subscriber network including a system operation management unit and a VB5 protocol unit, and a B-ISDN switching network system, A) initializing the entire system by receiving the VB5 start request from the VB5 protocol unit from the system operation management unit; B) configuring provisioning for the interface; C) executing an internal connection setting for a corresponding interface between the optical termination device and the optical communication network unit; D) establishing an internal connection of the virtual path connection / virtual channel connection (VPC / VCC) for the RTMC; E) establishing a permanent virtual connection (PVC) connection between the physical user port and the physical service port; F) notifying the end of provisioning after completing the connection of the permanent virtual connection (PVC), requesting the start-up of the interface, waiting for the start-up result, and starting the service for the interface if the start-up is successfully completed; And G) Check if there are additional provisions in other interfaces, and if there are additional provisions, repeat from step b) above and terminate if no additional provisions are required. See 5.1 Starting the Interface. The method of claim 1, wherein the step a) Determining, by the system operation management unit, the start of the VB5 system at some point in time after the system is started, and transmitting a start request signal to the VB5 protocol unit; A V5.1 interface activation method in a subscriber network and a broadband integrated communication network (X-ISDN), comprising: receiving a start request from a VB5 protocol unit and performing initialization for the entire VB5 system. The method of claim 1, wherein b) Requesting to start provisioning for a corresponding interface to the system operation management unit after completion of initialization work in the VB5 protocol unit; Receiving a provisioning start signal from the VB5 protocol unit after the activation request, the system operation management unit receives provisioning data for a corresponding interface, and then transmits a provisioning end signal And a method of activating the 5.1 interface in a broadband integrated communication network (XISN). The method of claim 1, wherein Receiving a provision type from the system operation management unit by the VB5 protocol unit and requesting a connection setting for a permanent virtual connection (PVC) connection between the optical communication network unit and the optical termination device for the corresponding interface and waiting for a result signal; The subscriber network and the broadband integrated communication network comprising the step of performing a permanent virtual connection (PVC) connection command between the optical communication network unit and the optical termination device in the system operation management unit receiving the connection request signal and transmitting the result to the VB5 protocol unit. How to start interface 5.1 in 인터페이스 -ISDN). The method of claim 1, wherein the step d) Requesting connection establishment for a virtual path connection / virtual channel connection (VPC / VCC) for RTMC after receiving the connection establishment result between the optical communication network unit and the optical termination unit by the VB5 protocol unit; The system operation management by receiving a connection setup request for the RTMC performs a connection setup command for the virtual path connection / virtual channel connection (VPC / VCC) for RTMC, characterized in that the step consisting of transmitting the result ＶＢ5.1 interface start method in own network and broadband integrated network (Ｂ-ISDN). The method of claim 1, wherein e) When the VB5 protocol unit receives the RTMC connection establishment result for the interface, requesting a permanent virtual connection (PVC) connection between the physical user port and the physical service port for the interface; The system operation management unit that receives the request for permanent virtual connection (PVC) access, the virtual path connection identifier / virtual connection identifier (VPCI / VCI) of the corresponding physical user port and the virtual path connection identifier / virtual connection identifier (VPCI) of the associated physical service port. ＶＢ5.1 interface activation method in a subscriber network and a broadband integrated network (Ｂ-ISDN), characterized in that the step of performing a permanent virtual connection (PVC) connection between the / VCI) and inform the result. The method of claim 1, wherein the bar) Transmitting a provision termination signal from the VB5 protocol unit when connection establishment between the physical user port and the physical service port is completed; Requesting a start-up of a corresponding interface from a system operation management unit that receives a provision end signal from the VB5 protocol unit; In response to the VB5 protocol addition start request signal, notifying the system operation manager of the start result after performing according to a predetermined result; The method of ＶＢ5.1 interface activation in a subscriber network and a broadband integrated communication network (Ｂ-ISDN), characterized in that the service for the interface is started when the startup is successfully completed. A computer-readable recording medium having recorded thereon a program for executing each step according to any one of claims 1 to 7.