KR100431201B1 - Method for invoking vb5.2 interface in access networks and switching networks - Google Patents

Abstract

According to the present invention, when a subscriber network and a Broadband-Integrated Service Digital Network (B-ISDN) switching network are connected based on a VB5.2 interface, a provision for VP / VC in a subscriber network and a B-ISDN switching network ( Provisioned) VB5.2 interface start method, which is the VB5 protocol unit receives the VB5 start request from the system operation management unit to initialize the entire system, configures the provision for the interface, and the VB5.1 interface After completing the initialization status for the interface, and then setting up the internal connection for the corresponding interface between the OLT and ONU, the virtual path connection / virtual channel connection (VPC / VCC) for RTMC and B-BCC After performing the connection setup and notifying the system operation manager from the VB5 protocol part of the provisioning termination for the interface, start the startup procedure for the VB5.1 interface. And performing a start-up according to the start-up procedure by requesting a start-up of the VB5.2 interface. In addition, if additional provision is required by checking whether additional provision is required for another interface, step b) above. Repeat from above, and the startup ends if no further provisioning is required.

Description

METHOD FOR INVOKING VB5.2 INTERFACE IN ACCESS NETWORKS AND SWITCHING NETWORKS in Subscriber Network and Broadband Telecommunication Network (Ｂ-ISDN)

According to the present invention, when a subscriber network and a Broadband-Integrated Service Digital Network (B-ISDN) switch network are connected to each other based on the VB5.2 interface, a request type for VP / VC in the subscriber network and the B-ISDN switch network ( The present invention relates to a method of initiating a ＶＢ5.2 interface in a subscriber network and a broadband integrated network (Ｂ-ISDN) to enable on-demand allocation of VB5.2 interfaces.

In general, when the subscriber network and the B-ISDN switching network support SVC using the VB5.2 interface, an internal activation method for the VB5.2 based VB5 interface to provide VB5.2 services in the subscriber network and the B-ISDN switching network. 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 VB5.2 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.

Since there is no SNI-based subscriber network supporting the VB5 interface, the B-ISDN subscriber is directly connected to the switching network using a switched virtual connection (SVC) (using Q.2931 signaling). In other words, SNI was not applied between the subscriber and the B-ISDN switching network.

However, subscriber networks based on ADSL are currently used, and SNI based V5 interface is applied between the subscriber network and PSTN (or N-ISDN) switched network, and in the future, based on VB5.2 interface SNI may be applied.

Therefore, in order to support the VB5.2 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 to satisfy the above-mentioned conventional requirements, and its object is that when a subscriber network and a Broadband-Intergrated Service Digital Network (B-ISDN) exchange network are connected based on a VB5.2 interface, In subscriber network and broadband integrated network (Ｂ-ISDN) supporting VB5.2 interface of on-demand allocation for virtual path / virtual connection (VP / VC) in subscriber network and B-ISDN switching network ＶＢ5. 2 It provides a method for starting the interface.

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 to which the present invention is applied.

3 is a flowchart illustrating a VB5.2 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 VB5.2 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 section 22: VB5 protocol section

23: supervisory control unit 231: SNI supervisory control unit

232: ODN supervisory control unit

According to an aspect of the present invention, there is provided a method for activating a 5.2 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.

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

B) configuring a provision for the interface and completing an initialization state for the VB5.1 interface;

C) executing an internal connection setting for a corresponding interface between the OLT and the ONU;

D) performing connection setup of the VPC / VCC for RTMC and B-BCC;

E) notifying the end of provision for the interface from the VB5 protocol unit to the system operation management unit;

F) requesting and performing a startup for the VB5.1 interface;

G) requesting startup of the VB5.2 interface for the successfully terminated VB5.1 interface to perform startup according to the startup procedure;

A) check whether additional provisions for other interfaces are needed, and repeat steps from step b) above if additional provisions are required, and terminate if no additional provisions are required.

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

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. Unlike SNI, which is based on the V5 interface in the PSTN (or N-ISDN), the VB5.1 interface type that drives the Broadband Bearer Channel Connection (B-BCC) protocol must also be supported in VB5.2.

The present invention is composed of the above two types of system operation management function block, VB5 protocol function block, and supervisory control function block, etc. in VB5.2 subscriber network and B-ISDN switching network system, detailed control related to provisioning, connection establishment and start-up The procedure was to solve the startup method for the VB5.2 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 distribution network of an subscriber network. 13), an OLT (Optical Line Terminal) 14 of a subscriber network, and a B-ISDN Exchange (hereinafter referred to as LE) 15.

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

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, VB5.2 (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 connections that provide supervisory control for SNI-related line cards. And a control unit (SSCU) (231b), ODN monitoring control unit 232 is composed of ODN connection control unit (OSCU) (232a) that provides monitoring and control functions on the associated line card ODN

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 used only in the subscriber network system. Applicable functional block.

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 start-up request of the system operation management unit 21 for the VB5.2 interface proceeds to the start-up for the VB5.2 interface after performing the start-up for the VB5.1 interface, and the interface for the VB5.1 and VB5.2. The identifiers are assumed to be the same. Also, make sure that this is done for one interface at a time.

Third, unlike V5, the interface identifier information used in the present invention is not information exchanged between the B-ISDN LE 15 and the subscriber network in the SNI signaling method, and the subscriber network may support multiple VB5.2 interfaces. Information used by itself to refer to each VB5.2 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.

Based on the above conditions, the interface activation process according to the present invention, which is performed in the apparatus of FIGS. 1 and 2, is summarized as follows.

1) The VB5 system management unit 22a of the VB5 protocol unit 22 receives a VB5 start request from the VB5 operation management unit 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) Thus, the VB5 system management unit 22a of the VB5 protocol unit 22 completes the initialization state related to the entire VB5 system.

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

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

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

6) The VB5 system management unit 22a of the VB5 protocol unit 22 is a VB5 operation management unit 21c of the system operation management unit 21 and establishes an internal connection for a corresponding interface between the OLT 14 and the ONU 12. Ask.

7) The VB5 operation management unit 21c of the system operation management unit 21 is the VB5 system management unit 22a of the VB5 protocol unit 22 and the result of the internal connection setting for the corresponding interface between the OLT 14 and the ONU 12. Notify.

8) The VB5 system management unit 22a of the VB5 protocol unit 22 requests the VB5 operation management unit 21c of the system operation management unit 21 to set the RTPC and VPC / VCC for the B-BCC for the corresponding interface. .

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

10) The VB5 system management unit 22a of the VB5 protocol unit 22 notifies the VB5 operation management unit 21c of the system operation management unit 21 of the end of provision for the corresponding interface. In this case, since VB5.2 needs to support SVC rather than PVC like VB5.1, request the PVC connection between the corresponding physical user port and the physical service port to the VB5 operation management unit 21c of the system operation management unit 21. I never do that.

11) The VB5 operation management unit 21c of the system operation management unit 21 requests the startup of the corresponding VB5.1 interface to the VB5 system management unit 22a of the VB5 protocol unit 22.

12) The VB5 system management unit 22a of the VB5 protocol section 22 omits the PVC connection procedure and applies the procedure (G.96, start-up procedures in Sections 13, 3, and 4.1) of the Recommendation. The VB5 operation management unit 21a of (21) is notified.

13) The VB5 operation management unit 21c of the system operation management unit 21 is connected to the corresponding VB5.2 interface for the VB5.1 interface that has been successfully started up to the VB5 system management unit 22a of the VB5 protocol unit 22. Request to start.

14) The detailed startup procedure after the VB5 system management unit 22a of the VB5 protocol unit 22 receives the start request for the corresponding VB5.2 interface from the VB5 operation management unit 21c of the system operation management unit 21 is described in G. .967.2 Apply the procedure outlined in the Recommendation (Start-up Procedure in Section 13.6.4.5) and notify the VB5 Operation Management Unit (21c) of the System Operation Management Unit (21). The service is then started for the interface that has been successfully started.

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

16) The VB5 operation management unit 21c of the system operation management unit 21 repeats the operations of step 4) when provisioning for an additional interface is necessary, and finally, when no longer provisioning is required, the system operation management unit 21c. VB5 operation management unit (21c) of the request to end provisioning.

3 and 4 are flow charts showing the method of starting the VB5.2 interface according to the present invention applied to the subscriber network and the B-ISDN switching network in terms of the system operation management unit 21 and the VB5 protocol unit 22, respectively. This will be described in more detail with reference to this.

FIG. 3 is a flowchart illustrating a startup related process of the VB5.2 interface to the system operation management unit 21 of the subscriber network and B-ISDN switching network system to which the present invention is applied.

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 (S31 to S34).

Then, when the provision start signal is received, the provision data for the corresponding interface is configured, and the provision end signal is generated and transmitted to the VB5 system management unit 22a of the VB5 protocol unit 22 (S35 to S39). .

In the standby state, when the connection establishment request signal is received from the VB5 protocol unit 22 (S40), the PVC connection command is performed between the ONU 12 and the OLT 14 (S41), and the ONU 12 And the connection establishment result signal between the OLT 14 and the VB5 system management unit (VSMU) 22a of the VB5 protocol unit 22 (S42, S43).

Subsequently, in the standby state for establishing the RTMC connection and receiving the RTMC connection establishment request signal from the VB5 system management unit 22a, the connection establishment command for the virtual path connection / virtual channel connection (VPC / VCC) for the RTMC is performed. And generate the RTMC connection setup result signal and transmit it to the VB5 system management unit 22a (S45 ~ S49).

Subsequently, according to the B-BCC connection establishment request of the VB5 protocol unit 22, after performing the B-BCC connection establishment, the resultant signal is generated and transmitted to the VB5 protocol unit 22 (S50 to S54).

Then, when waiting for provisioning termination (S55, S56), and receives the provisioning termination signal from the VB5 system management unit (22a) (S57), generates a VB5.1 start request signal for the interface Request to the VB5 protocol unit 22 (S58, S59).

After waiting for the start-up result of the VB5 protocol unit 22 and successfully starting, the VB5.2 start request signal for the corresponding interface is generated and transmitted to the VB5 protocol unit 22 (S60 to S63). ).

After the start-up request as described above, it waits for the result (S64, s65), and if the start-up has been successful for the corresponding VB5.2 interface (S66), check whether additional provisioning for another VB5.2 interface is required. (S67).

In the above, if no additional provision is required, the start-end signal is generated and transmitted to the VB5 system management unit 22a (S34, S35), and the entire VB5.2 system transitions to the service state (S68-S71).

On the contrary, if additional provisioning is required, the provisioning data for the corresponding VB5.2 interface is configured and then a provisioning end signal is transmitted (S68 and S36).

FIG. 4 is a flowchart illustrating the activation of the VB5.2 interface of the VB5 protocol unit 22 according to the present invention in the subscriber network and the B-ISDN switching network system. Referring to this, the operation of the VB5 protocol unit 22 will be described.

When the VB5 system management unit 22a of the VB5 protocol unit 22 receives the start request message from the VB5 operation management unit 21c (S71), performs the initialization operation for the entire VB5 system (S73) and provisions. A start signal is generated and transmitted to the VB5 operation management unit 21c (S74 to S75).

Then, waiting for provisioning termination (S76), when receiving the start termination signal from the VB5 operation management unit (21c), the entire VB5.2 system transitions to the service state (S77, S78), the corresponding VB5 .2 Perform an initialization operation for the interface (S80), generate and transmit a connection establishment request signal for the PVC connection between the ONU 12 and the OLT (14) (S81, S82).

Subsequently, after receiving the connection establishment result signal between the ONU 12 and the OLT 14 after being in the standby state, the RTMC is connected to the VB5 operation management unit 21c to request the connection establishment for the VPC / VCC for RTMC. The setup request signal is transmitted (S83 to S87).

Then, in the standby state (S88), after receiving the RTMC connection establishment result signal, and then generates a B-BCC connection establishment request signal and transmits to the VB5 operation management unit 21C and waits for the result (S88). To S92).

Then, upon receiving the B-BCC connection setup result, it generates and transmits a provision end signal and waits for starting VB5.1 (S93 to S96).

Upon receiving the VB5.1 start request for the corresponding interface (S97, S98), proceed with the procedure described in the G.967.1 Recommendation (startup procedure in Section 13.3.4.1), and generate the result signal to generate the system operation management unit (21). (S99 ~ S101).

After waiting for the VB5.2 startup, when the VB5.2 startup request is received from the system operation management unit 21 (S102 and S103), the G.967.2-based startup procedure is performed and the signal is generated. After transmitting to the system operation management unit 21 waits for the provisioning end (S104 ~ 107)

As described above, the present invention has an excellent effect of supporting the 5.2 interface in the subscriber network and the broadband integrated communication network (X-ISDN).

Claims (10)

In the 5.2 interface activation method 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 system operation manager by the VB5 protocol unit; B) configuring a provision for the interface and completing an initialization state for the VB5.1 interface; C) executing an internal connection setting for a corresponding interface between the optical termination device (OLT) and the optical communication network unit (ONU); D) performing the establishment of a virtual path connection / virtual channel connection (VPC / VCC) for RTMC and wideband transport channel connection (B-BCC); E) notifying the end of provision for the interface from the VB5 protocol unit to the system operation management unit; F) requesting and performing a startup for the VB5.1 interface; G) requesting startup of the VB5.2 interface for the successfully terminated VB5.1 interface to perform startup according to the startup procedure; I) Check if additional provisions for other interfaces are needed, and repeat steps from step b) above if additional provisions are needed, and terminate if no additional provisions are required. 5.2 Interface start method in a communication network (i-ISDN). The method of claim 1, wherein the step a) Generating, by the system operation management unit, a VB5 start request signal; Transmitting, by the system operation management unit, the VB5 start request signal to the VB5 protocol unit and waiting for provisioning start; A 5.1 interface activation method in a subscriber network and a broadband integrated communication network (VII-ISDN), comprising: receiving an activation request from the VB5 protocol unit and configuring an initialization state for the VB5 system. The method of claim 1, wherein b) Generating a provision start signal when an initialization operation is completed in the VB5 protocol unit; Transmitting the generated provision start signal to the system operation management unit; Receiving, by the system operation management unit of the standby state, the provision start signal to configure provisioning for a corresponding interface; Generating a provision termination signal from the system operation management unit and transmitting the generated end signal to the VB5 protocol unit; The 5.2 interface start method in the subscriber network and the broadband integrated communication network (VII-ISDN), characterized in that the step of configuring the initialization state for the corresponding VB5.1 interface after receiving the provision end signal from the VB5 protocol unit. The method of claim 1, wherein Generating a connection request signal between an optical communication network unit (ONU) and an optical termination device (OLT) for a corresponding interface when the VB5 protocol unit receives a provision type from the system operation management unit; Waiting for a transmission after the connection request signal between the generated optical communication network unit ONU and the optical termination device OLT is transmitted to a system operation management unit; Performing a permanent virtual connection (PVC) connection command between the optical communication network unit (ONU) and the optical termination device (OLT) by the system operation management unit receiving the connection request signal; Generating a connection establishment result signal in the system operation management unit; A method of activating a ＶＢ5.2 interface in a subscriber network and a broadband integrated communication network (X-ISDN), which is performed by transmitting the generated connection establishment result signal to the VB5 protocol unit and waiting for RTMC connection establishment. The method of claim 1, wherein the step d) Generating a connection establishment request signal 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 device; Transmitting the generated RTMC connection establishment request signal to the system operation management unit; Receiving, by the system operation manager, a connection establishment request for the RTMC, performing a connection establishment command for a virtual path connection / virtual channel connection (VPC / VCC) for the RTMC; Generating, by the system operation management unit, an RTMC virtual path connection / virtual channel connection (VPC / VCC) setup response signal; Transmitting the generated response signal to the VB5 protocol unit; Generating a wideband transmission channel connection (B-BCC) establishment request signal by the VB5 protocol unit having received the RTMC connection establishment result; Transmitting the generated B-BCC connection establishment request signal to the system operation management unit; ＶＢ5.2 interface activation in a subscriber network and a broadband integrated communication network (Ｂ-ISDN), which is performed by the system operation management unit performing broadband transmission channel connection (B-BCC) setting and transmitting the result to the VB5 protocol unit. Way. The method of claim 1, wherein e) Generating, by the VB5 protocol unit, a provision termination signal upon receiving the connection establishment result for the B-BCC for the corresponding interface; The method of 기동 5.1 interface activation in a subscriber network and a broadband integrated communication network (Ｂ-ISDN), characterized in that the step of transmitting the generated provision end signal to the system operation management unit. The method of claim 1, wherein the bar) Generating a VB5.1 start request signal for a corresponding interface by the system operation manager receiving the provision end signal; Transmitting the generated VB5.1 start request signal to a VB5 protocol unit; Generating a startup result signal after performing a startup procedure set by the VB5 protocol unit receiving the VB5.1 startup request signal; A method of activating a ＶＢ5.2 interface in a subscriber network and a broadband integrated communication network (VII-ISDN), which is performed by transmitting a start result signal for the generated VB5.1 to a system operation management unit. According to claim 1, wherein the step 4) Generating, by the system operation management unit having received the VB5.1 start result signal, a VB5.2 start request signal for the corresponding interface; Transmitting the generated VB5.2 start request signal to a VB5 protocol unit; Proceeding with a startup procedure set by the VB5 protocol unit and generating a startup result signal; A method of activating a ＶＢ5.2 interface in a subscriber network and a broadband integrated communication network (VII-ISDN), which is performed by transmitting the generated VB5.2 start result signal to a system operation management unit. According to claim 1, wherein the step a) Checking the necessity of further provisioning in the system operation management unit having received the start result for VB5.2; If additional provision is required, repeating from step b) above, and generating a start-up signal when no additional provision is required; A method of activating a ＶＢ5.2 interface in a subscriber network and a broadband integrated communication network (Ｂ-ISDN), which is performed by transmitting the generated start-up signal to the VB5 protocol unit and starting a VB5.2 system service. A computer-readable recording medium having recorded thereon a program for executing each step according to any one of claims 1 to 9.