KR19990035525A - Signaling method for providing switched virtual channel service to terminal equipment without signal function - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a signal substitution method for providing a switched virtual channel service.

2. The technical problem to be solved by the invention

The present invention provides a connection and release of a switched virtual channel service between a service terminal system and a service server system when a service terminal apparatus without a signal negotiation function accesses a service of a service server system providing a switched virtual channel service. To provide a signaling agent method performed between a service terminal system, a service arbitration system, a service switching system, and a service server system.

3. Summary of Solution to Invention

The present invention provides a switched virtual channel service to a service terminal device having no broadband call / connection negotiation capability by defining a signal flow and defining a structure of an exchange system and a service arbitration system for providing a signal agent function.

4. Important uses of the invention

The present invention is used to establish and release a connection of a service channel.

Description

Signaling method for providing switched virtual channel service to terminal equipment without signaling function

The present invention provides a minimum message while maintaining efficient utilization of network resources of a broadband integrated information communication network when a service terminal system without signal negotiation capability accesses a service server system providing a switched virtual channel (SVC) service. Signaling method for providing switched virtual channel service to terminal equipment without signaling function by providing connection establishment and release of switched virtual channel service between service terminal system and service server system through exchange and conversion of message and broadband signal It is about.

In the age of multimedia, it is easy to access the culture and characteristics of the world through the Internet at home. In addition, through the broadband and high speed of the public communication network, various services are developed using this, and some of them are applied to play a role in convenience and richness of life. Therefore, personal computers have become a living in every home, and navigation to the Internet has become an essential virtue of modern man.

Various services in the form of downloads can be delivered in real time on the Internet, and according to user demand, a real-time moving picture delivery service applying a Java environment has been developed. However, it is possible to receive real-time moving images only through broadband and high speed of a public communication network. In the current Internet environment, moving images are frequently disconnected.

Accordingly, service users are demanding wider bandwidth and service speed, and there is a tendency to use Asynchronous Transfer Mode (ATM) network as a service backbone according to the service demand of these users.

In case of using the ATM network, it is necessary to provide a switched virtual channel service by call / connection negotiation in order to satisfy the satisfaction of network management and the quality of service provision of the user.

Delivering a service through a switched virtual channel allows management to use network resources more efficiently than providing services through a Permanent Virtual Channel (PVC), and has much higher adaptability to service changes and selections.

Therefore, standardization mechanisms such as Digital Audio-Visual Council (DAVIC) and Asynchronous Communication Mode Forum (ATM-FORUM), which are in charge of standardizing audio-visual systems, are exchangeable virtual devices in terminal devices without signaling functions. In order to provide a channel service, a channel negotiation through a lightweight signaling function is proposed between a user and an access node, and a channel negotiation through a broadband signaling function is proposed between an access node and a service server. In addition, in the access node, a signal signaling agent function for converting a protocol between these lightweight signaling functions and broadband signaling functions is conceptually defined to reduce the burden on the signaling function to the user terminal.

One way to implement the proposed signaling agent method in such a standardization organization is to place the signaling agent in a remote session resource management system and establish a connection for switching equipment to control it.

The method of establishing a signaling agent in the session resource management system and establishing a connection device for controlling the same attempts to negotiate a signal through a separate signaling channel downward and upward using an ATM connection with the session resource management system.

The method of connecting the relevant terminal and the server with the signal agent in the service switching system is to separate the surrogate signal by using a special virtual channel, extract it from the network connection of the switching system, and convert it by the signal agent to convert the signal through the broadband signal function. The connection is established.

In order to provide services through the switched virtual channel, the International Telegraph and Telephone Consultative Committee (ITU-T), a broadband call / connection negotiation software package for negotiating switched virtual channel to subscriber terminal devices, is provided. The recommended Q.29xx series must be provided, and for point-to-point connections, the Q.2931 must be provided. However, the software package according to the conventional technology as described above is limited in processing power and memory space of the subscriber station, and there is a problem in that network resources cannot be efficiently used.

The present invention devised to solve the above problems, the service terminal device without the signal negotiation function exchanges between the service terminal system and the service server system when the service of the service server system providing the switched virtual channel service An object of the present invention is to provide a signaling agent method performed between a service terminal system, a service arbitration system, a service switching system, and a service server system in order to provide connection and release of a virtual virtual channel service.

1 is an explanatory diagram of a switched virtual channel (SVC) service to which the present invention is applied;

2 is a diagram illustrating an embodiment of a functional block and its interaction for providing a switched virtual channel (SVC) service to which the present invention is applied;

3 is a flow diagram of an embodiment of a connection establishment procedure of a switched virtual channel (SVC) service according to the present invention;

4 is a flowchart illustrating an embodiment of a disconnection procedure of a switched virtual channel (SVC) service according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: service terminal system 12: service exchange system

13 service arbitration system 14 service server system

In order to achieve the above object, the present invention provides a signal proxy method for providing a switched virtual channel service to a terminal device having no signal function, wherein the server system and the terminal device selected through the service navigation between the terminal device and the arbitration system are provided. A first step of establishing a channel by a signal agent to establish a desired switched virtual channel (SVC) service; A second step of receiving a desired service stream through a switched virtual channel formed by selecting a desired program title of the service user; And a third step of disconnecting the switched virtual channel service by the signal agent between the terminal apparatus and the server system when the service currently being provided is to be released.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is an explanatory diagram of a switched virtual channel (SVC) service to which the present invention is applied.

In order to provide a switched virtual channel service, a service terminal system 11, a service switching system 12, a service arbitration system 13, and a service server system 14 are provided to perform a signaling procedure as follows.

First, the service terminal system 11 accesses the navigation block (131 of FIG. 2) of the service arbitration system 13 using a permanent virtual channel (PVC) 101 and transmits the service list transmitted from the service arbitration system 13. Find the desired service title at 102.

When the service terminal system 11 selects the service title of the service server system 14 to receive the service (103), the service arbitration system 13 is a profile of the service terminal system 11 and the selected service server system 14. Compare the information.

In the case of providing a switched virtual channel service between the service terminal system 11 without a signal function and the service server system 14 with a signal function, the service arbitration system 13 sends a light signal execution file to the service terminal system 11. Transmit (104).

Thereafter, the service terminal system 11 requests the service arbitration system 13 to establish a service connection using the lightweight signaling protocol (105).

The service arbitration system 13 receiving the service connection establishment request from the service terminal system 11 transmits the source address, the destination address, bandwidth information, and the message type to the service switching system 12 via Ethernet (106). This is to request to perform the broadband signal procedure.

Upon receiving such a request, the service switching system 12 requests a connection establishment to the selected service server system 4 by using a signaling function of an associated port (107).

As a result of this signaling procedure, according to the connection confirmation information transmitted from the service server system 14 (108), the service switching system 12 establishes a connection resource between the calling port and the called port analyzed by the calling address (109). ), And transmits the associated connection identifier information to the service arbitration system 13 through Ethernet (110).

The service arbitration system 13 transmits this information to the service terminal system 11 through a lightweight signaling procedure so as to establish a connection identifier for network connection of the service terminal system 11 (111). Therefore, when the service terminal system 11 is connected to the service switching system 12 using the set virtual path identifier / virtual channel identifier (VPI / VCI) value, the service switching system 12 in the service switching system 12 is connected. The service server system 14 is routed to the connected port C to form a service channel for receiving a desired service stream (112).

Meanwhile, the procedure of releasing the received service channel may also be performed by the above method.

2 is a diagram illustrating an embodiment of a functional block and its interaction for providing a switched virtual channel (SVC) service to which the present invention is applied.

The service arbitration system 13 includes a navigation block 131 and a light weight signal block 132, and the service switching system 12 includes a system management block 121, a routing table control / management block 123, and a broadband signal block. 122, and a plurality of port connection blocks 124-126. It also has a signal agent block 127 that exists across the service arbitration system 13 and the service exchange system 12.

Looking at the interaction for providing a switched virtual channel (SVC) service between the system having a functional block as described above are as follows.

The navigation block 131 in the service arbitration system 13 is an initial block through which the service terminal system 11 connects with the service arbitration system 13, and a desired service program title through a function of providing user authentication and service gateway function. Is finally selected (201 to 203). Further, the profile information of the service server system 14 and the service terminal system 11 of the finally selected program title is compared, and the light weight signal program is transmitted according to the result.

The service terminal system 11 without the broadband signal function is connected to the lightweight signal block 132 of the service arbitration system 13 by the lightweight signal protocol (204, 202, 205).

The lightweight signal block 132 provides a communication function for exchanging minimal information for the wideband signal negotiation with the service terminal system 11, and manages and adjusts the lightweight signal at the same time when multiple ports are requested. In addition, an identifier of each lightweight signal is designated and transmitted to the signal agent block 127 together with the item related to the signal (206).

The signal agent block 127 is distributed in the service arbitration system 13 and the service switching system 12, which is a system for communicating the communication function and the received signal related items between the service arbitration system 13 and the service switching system 12. An analysis is performed with the help of the management block 121 (207), and performs a function of converting to meet the connection standard of the broadband signal block 122.

The signal agent block 127 in the service arbitration system 13 supports the communication function with the service switching system 12 with minimal functions, and the signal agent block 127 in the service switching system 12 is in charge of the main function. do.

The system management block 121 is responsible for system overall management functions such as connection management, system configuration management, and status management of the service exchange system 12. It performs caller port number translation for the calling address inquired by the signal agent block 127 (207), translates the caller port number by the called party address required by the broadband signal block 122, and sets the internal route of the switch by the connection. Perform processing for the / release request (209). In addition, according to the request of the wideband signal block 122, a function of controlling the routing table control / management block 123 for setting / releasing the internal path of the switch is performed (421).

The routing table control / management block 123 is in charge of managing the table for setting / disconnecting the connection of the corresponding port access blocks 124 to 126 according to the request of the system management block 121, and thus setting a path inside the switch. Perform / release (213).

The broadband signal block 122 receives destination information desired to establish and release a service connection from the signal agent block 127, interprets it through the system management block 207 (209), and according to the received destination port information. After performing the wideband signal negotiation with the service server system 14 through the port C access block 126 (211), the resulting connection completion / disconnection completion information is transmitted to the signal agent block 127 ( 208).

The plurality of port access blocks 124-126 provide physical / logical connections with the service terminal system 11 or the server system 14 connecting to the service switching system 12.

When the service terminal system 11 is connected to the service server system 14 through the lightweight signal block 132, the signal agent block 127, and the broadband signal block 122, the port A connection block 125 and the port C connection are performed. A path is formed between the blocks 126 (214), and finally a service stream path is formed between the service terminal system 11 and the service server system 14 (215).

The service stream path 215 is a path for delivering a service stream connected to the service server system 14 connected to the port C access block 126 through the port A access block 125. The connection identifier is established in the service terminal system 11 and used to access the port A access block 125.

Meanwhile, a path for performing a service disconnection procedure is as follows.

First, when the service terminal system 11 deletes the associated connection identifier and requests connection release through the lightweight signal block 132 (204, 202, 205), the system management block ( 121 deletes the corresponding connection from configuration management, and deletes the corresponding connection from the switch connection table of the service switching system 12 in the routing table control / management block 123. Perform the disconnection procedure with).

3 is a flowchart illustrating a connection establishment procedure of a switched virtual channel (SVC) service according to the present invention.

The present invention provides a procedure for establishing a switched virtual channel (SVC) service by a signal agent, and a service navigation process through a switched virtual channel (PVC) for providing an on-demand video service through the navigation block 131. , A service connection negotiation process including a lightweight signal block 132, a broadband signal block 122, and a signal agent block 127, and a service providing process through a switched virtual channel service formed through the service connection negotiation process.

First, the service navigation process, the network connection card through the permanent virtual channel (PVC) so that the service terminal system 11 can use the pre-allocated connection with the service arbitration system 13 having a service gateway function to find the desired service Set 301.

Thereafter, the service arbitration system 13 is accessed using the navigation device to request browser information (302). In this case, the service arbitration system 13 performs access control through user authentication of the service terminal system 11 to be accessed (303). That is, browser information is provided for the allowed user (304), and the user registration request is requested if it is not the allowed user.

Next, after performing a service navigation procedure between the user who is provided with the browser information and the service arbitration system 13 (305), if the user selects a desired service title in the browser screen (306), the service terminal system 11 In accordance with the protocol of the application program providing the navigation, the title selection information is transmitted transparently through the service switching system 12 to the service arbitration system 13 (207).

The service arbitration system 13 having received the title selection information compares the profile information of the service server system 14 and the service terminal system 11 providing the program title selected by the service terminal system 11, and the service stream between the two systems. It is checked whether an exchange is possible (308).

If the service server system 14 provides only switched virtual channel services and the service terminal system 11 also has switched virtual channel negotiation capability, the service arbitration system 13 selects the service selected by the service terminal system 11. Provide the address information of the server system 14. Therefore, the service terminal system 11 receives a service through a connection path formed through connection negotiation with the service server system 14 using its broadband signal function based on the provided address information.

However, if the service server system 14 provides only the switched virtual channel service and the service terminal system 1 does not have the switched virtual channel negotiation capability, the service arbitration system 13 determines that signaling is necessary. By providing the service terminal system 11 and the program and server address information supporting the lightweight signal protocol that can transfer the minimum information necessary for broadband signal negotiation between the service server system 14 and the service arbitration system 13 (309). ).

On the other hand, in the service connection negotiation process, the service terminal system 11 provided with the light weight signal program executes the execution file 310 with the desired service server system 14 as the service arbitration system 13 through the light weight signal protocol. Request service connection establishment of the service (311).

After receiving the connection establishment message, the service arbitration system 13 requests the service switching system 12 to perform the signaling function by the signal agent through the Ethernet connection (312).

Next, the service switching system 12 receiving the request from the service arbitration system 13 activates an internal signal agent function (313) and is required to negotiate with the service server system 14 to the broadband signal block 122. Converts the data into a data format and transmits the data to the broadband signal block 122 of the connection port of the service switching system 12 corresponding to the address of the selected service server system 14, thereby converting the data between the service switching system 12 and the service server system 14; A Q.2931 connection establishment request message for broadband signal negotiation is transmitted to the service server system 14 (314).

After receiving the connection establishment request message, the service server system 14 notifies the connection establishment completion message to the service exchange system 12 after setting up resources for the connection (315).

Receiving the connection establishment complete message from the service server system 14, the service switching system 12 analyzes network routing information corresponding to the incoming and outgoing ports, and sets network routing information of the incoming port (316). The network routing information is provided (317) to set network routing information of the outgoing port (318). Therefore, the path setting in the service switching system 12 for the service connection request is completed.

In addition, the signal agent block 127 of the service switching system 12 services the terminal connection identifier information through the Ethernet connected with the service arbitration system 13 to provide the connection identifier information to be used as the service terminal system 11. The signal is transmitted to the signal agent block 127 of the arbitration system 13 (319).

Thereafter, when the signal agent block 127 of the service arbitration system 13 transmits it to the light weight signal block 132 to transmit it to the service terminal system 11, the light signal block 132 is transferred to the service terminal system 11. The service terminal system 11 transmits a network connection identifier for receiving the selected service by notifying the completion of the connection setting using the lightweight signal protocol (320).

Finally, the service terminal system 11 receiving the network connection identifier performs the connection identifier setting for the selected service by using the same (321), thereby through the service title in the corresponding path of the service server system 14. Access the associated stream (322).

4 is a flowchart illustrating an embodiment of a disconnection procedure of a switched virtual channel (SVC) service according to the present invention.

The present invention is a procedure for disconnecting a switched virtual channel (SVC) service by a signal agent, and indicates a service providing process, a service release negotiation process, and a service navigation process.

First, when a service user selects a desired program title to receive a service stream (322) and then releases a service, when the service terminal system 11 selects to disconnect a service, a related resource is deleted from the connection table of the network access card. (401).

Therefore, in order to perform the service disconnection processing, the lightweight signal block 132 must be used, so that the corresponding service disconnection request message is transmitted through the permanent virtual channel (PVC) connected with the service arbitration system 13 of the service arbitration system 13. The signal is transmitted to the lightweight signal block 132 (402). At this time, the lightweight signal block 132 transmits a related message to the signal agent block 127 in the service arbitration system 13.

The signal agent block 132 in the service arbitration system 13 receiving the message transmits a connection disconnection request message to the signal agent block 127 in the service switching system 12 (403). At this time, the signal agent block 127 of the service switching system 12 releases the resources of the associated destination port and origination port (404). Further, the network routing release information is provided to the routing table control / management block 123 (405) to release the associated resource (406), and then the release message received from the lightweight signal block 132 is transmitted to the broadband signal block 122. (407).

Then, the wideband signal block 122 in the service switching system 12 transmits a connection release request message by the wideband signal Q.2931 to the service server system 14 using the converted message (408).

Thereafter, the service server system 14 performs resource release according to the request of the broadband signal block 122 in the service switching system 12, and transmits a connection release completion message to the service switching system 12 (409). .

Next, when the signal agent block 127 of the service switching system 12 transmits a disconnection completion message to the light weight signal block 132 of the service arbitration system 13 (410), the light signal block 132 receives the corresponding service. The terminal system 11 notifies completion of service disconnection (411).

Finally, when the navigation block 131 in the service arbitration system 13 provides the browser information to the service terminal system 11 to provide an initial access screen (412), the service terminal system 11 performs service navigation again. (413).

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.

The present invention as described above, the general purpose of the ATM service by minimizing the burden on the terminal device by using the B-ISDN as a backbone network, and by utilizing the broadband use of the ICT and its features as much as desired bandwidth It is possible to recycle resources by establishing and releasing connections, reduce the construction cost of the service terminal system, and minimize the bandwidth consumption between the service terminal system and the service switching system by the signaling capability.

Claims (8)

In the signal substitute method for providing a switched virtual channel service to a terminal device without a signal function, A first step of establishing a channel between a selected server system and a terminal by a signal agent through service navigation between the terminal device and the arbitration system to establish a desired switched virtual channel (SVC) service; A second step of receiving a desired service stream through a switched virtual channel formed by selecting a desired program title of the service user; And A third step of performing service navigation after disconnecting a switched virtual channel service by a signal agent between the terminal device and the server system when a service currently being provided is to be released; Signal agency method for providing a switched virtual channel service to a terminal device without a signal function comprising a. The method of claim 1, The first step is, A fourth step of comparing the profile information in the arbitration system when the terminal device accesses the navigation block of the arbitration system using a permanent virtual channel (PVC) and selects a desired service title from the provided service list; And A fifth step of establishing a service channel between the terminal apparatus having no signaling function and the server system having a signaling function to negotiate a switched virtual channel service; Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method of claim 2, The fourth step, Setting a network access card through a permanent virtual channel (PVC) to find a desired service in the terminal device; A seventh step of performing access control through user authentication of a terminal device to be accessed by the arbitration system when browser information is requested from the terminal device to the arbitration system; An eighth step in which the arbitration system provides browser information for the authorized user and requests user registration if the arbitration system is not an authorized user; A ninth step of performing a navigation procedure between a user who is provided with browser information and the mediation system; A tenth step of selecting a service title desired by the user in the terminal device and transmitting title selection information to the arbitration system according to a protocol; And An eleventh step of determining whether service stream exchange is possible between the terminal apparatus and the server system by comparing the profile information of the title selection information received by the arbitration system; Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method of claim 2 or 3, The fifth step, As a result of the eleventh step determination, when the server system provides only the switched virtual channel service and the terminal apparatus also has the switched virtual channel negotiation capability, the twelfth system receives the service based on the address information provided from the arbitration system. step; A thirteenth step of transmitting a light weight signal program to the terminal device when the server system provides only the switched virtual channel service and the terminal device does not have the switched virtual channel negotiation capability; A fourteenth step of executing a lightweight signal program in the terminal device and requesting the arbitration system to establish a service connection with the corresponding server system; A fifteenth step of requesting a signaling agent to perform a signaling function from the arbitration system to the switching system via an Ethernet connection; A sixteenth step of activating a signal agent function in the switching system and converting the signal agent into data for negotiation; A seventeenth step of receiving a connection establishment complete message after establishing a resource for connection from the server system when the switching system transmits a connection establishment request message for negotiation of broadband signal to the server system; Setting up network routing information in the switching system and transmitting connection identifier to be used to a signal agent block of the arbitration system via Ethernet; And A nineteenth step of the signal agent block in the arbitration system transmitting a network connection identifier through a connection establishment complete message to the terminal device using a lightweight signaling protocol; Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method of claim 4, wherein The step of setting the routing information of the eighteenth step, A twenty step of analyzing network routing information corresponding to a destination port and an outgoing port in the switching system and setting network routing information of the destination port; And Step 21 of setting network routing information of an outgoing port by providing network routing information to an outgoing port Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method of claim 5, The second step, Setting a connection identifier for a service selected by the terminal apparatus using a network connection identifier; And A twenty-third step of accessing the stream associated with the service title in the corresponding path of the server system via the connection identifier; Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method according to claim 1 or 2, The third step, Selecting a service connection release from the terminal device to delete related resources from the connection table of the network access card; A seventh step of the terminal device transmitting a corresponding service connection release request message through a permanent virtual channel to a lightweight signal block in the arbitration system; An eighth step of the signal agent block in the arbitration system transmitting a disconnect request message to the broadband signal block in the switching system to release the related resources and convert the signal message; A ninth step of transmitting a disconnect request message to the server system by using the message converted in the wideband signal block in the switching system; A tenth step of performing resource release in the server system and transmitting a connection release completion message to the switching system; An eleventh step of sending, by the signal agent block in the switching system, a disconnection completion message to the lightweight signal block of the arbitration system; And 12th step of performing service navigation after the navigation block notifies the terminal device of the completion of service disconnection; Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including. The method of claim 7, wherein The twelfth step, A thirteenth step, wherein the navigation block provides browser information to the terminal device to provide an initial access screen; And Fourteenth step of performing service navigation between the terminal device and the arbitration system Signal agency method for providing a switched virtual channel service to a terminal device having no signal function, including.