KR0176083B1 - Method of controlling a call connection for providing a pptv commercial distribution service in an asynchronous transmission mode network - Google Patents

Abstract

The present invention relates to a call / connection control method for providing a PPV commercial TV distribution service in an asynchronous delivery mode network. The present invention relates to a type of control command for scheduling or providing a program view while providing a PPV service. Determining the first step; A second step of returning after executing the program search and request reservation request after performing the first step; A third step of returning after the type 2 call / connection processing for program distribution after performing the first step; A fourth step of performing the first step and returning after the middle call release process is being performed; A fifth step of, after performing the first step, returning a new pressurizer addition process to an ongoing session; And after performing the first step, characterized in that it comprises a sixth step of returning after the call teardown process by the end of the session.

Description

Call / Connection Control Method for Providing PIVB Commercial TV Distribution Service in Asynchronous Delivery Mode Network

Figure 1a is a diagram illustrating the configuration of an ATM network to which the present invention is applied.

1b is an overall flowchart of a call connection control method according to the present invention.

2 is a call / connection characteristics and setup procedure performed in the application reservation stage of the PPV service.

3 is a call / connection characteristics and setup procedure for providing a PPV program.

4 is a procedure for releasing a subscriber's midway call while watching a PPV program.

5 is a procedure for connecting a new subscriber to an ongoing session (call).

6 is a call release procedure.

The present invention relates to a call / connection control method for providing a PPV commercial TV distribution service in an asynchronous delivery mode network.

The video server of PPV commercial TV service can transmit several programs at the same time through several channels based on the basic program transmission plan, one of which is the information about the broadcasting schedule, the announcement of each program and the fee per viewer. Export it. The video server may require that media be added or not needed during the program, or if media delivery characteristics need to be modified. The subscriber may stop watching and exit the program during the program broadcast, or may connect and watch the program being broadcast in the middle. However, by controlling the video server directly, it does not allow control such as interrupting program broadcasting, fast viewing, and rewinding. That is, the subscriber is given only the right to select one of the programs that are aired at a predetermined time and simply watch or exit during viewing.

PPV commercial TV distribution service is a multimedia distribution service in the form of limited video on demand (VOD), which is one of the important services of the early broadband network. In order to provide PPV commercial TV services in ATM networks, procedures for point-to-multipoint call / connection control in the network must be supported, which is inefficient when using existing point-to-point call control methods. As a result, the functions to be processed in the terminal become very complicated.

The present invention has been made to solve the problems of the prior art, the function required in the terminal is simplified by controlling the call / connection using the broadband CS-2 signaling capability, so that the network resources can be effectively used The purpose is to provide a call / connection control method for providing PPV commercial TV distribution services in ATM networks.

In order to achieve the above object, the present invention includes a first step of determining a type of control command for reservation or provision of program viewing while providing a PPV service; A second step of returning after performing the first step and processing a program search and viewing reservation request; A third step of returning after type 2 call / connection processing for program distribution after performing the first step; A fourth step of performing after the first step and returning after the canceling process while watching; A fifth step of, after performing the first step, returning a new pressurizer addition process to an ongoing session; And after performing the first step, a sixth step of returning after the call teardown process by the end of the session.

Two types of call / connection control procedures are defined to provide PPV service in ATM network. The first is a point-to-point call / connection setup procedure for retrieving and requesting a program list.The subscriber who wants to apply for a program searches for a list of programs by applying a point-to-point call / connection to the video server and applies for the desired program. In this case, the call is terminated after registration on the applicant list. The second is a point-to-multipoint call / connection setup procedure for receiving a program from a video server. A point-to-multipoint call / connection is established between a video server and multiple viewers at a scheduled time, and the call ends when program transmission ends. Since the video server is a multi-session system that broadcasts several programs at the same time, several point-to-multipoint calls are set up at the same time, and subscribers can interrupt the program or access an ongoing call if desired. In order to enable these services, in the network, point-to-point call / connection control for reservation application of PPV program, point-to-multipoint call / connection setting for PPV program transmission, release of subscriber's call during watching PPV program, new subscriber to ongoing session It should support the procedures for additional access and deinterception.

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

Figure 1a is an exemplary network configuration for providing a PPV commercial TV service.

The public network consists of an ATM switch 101 and an access node 102. The subscriber stations 103 are directly connected to the ATM switch or connected to the public network through the access node. The video server 104 is connected to the ATM switch 101, and functionally comprises a guide and application reception function and a program distribution function. ATM switch 101 has call control, connection control, network access and termination control, and access node 102 has connection control. The multimedia terminal 103 has call control, connection control, and termination control agency functions for accessing the network.

The video server 104 can transmit several programs simultaneously through several channels based on a basic program transmission plan, and one of the channels outputs a program broadcast schedule, information about a broadcast program, and a per-view fee for each program. send. The video server may require that media be added or not needed during the program, or if media delivery characteristics need to be modified.

The subscriber 103 can stop watching and exit the program while the program is being broadcast, or connect to the program being broadcast in the middle. However, the direct control of the video server does not allow the program to be interrupted, watched quickly, or rewound. In other words, the subscriber is given only the right to select one of the programs that are aired at a predetermined time and to watch or exit during viewing.

FIG. 1B is a flowchart illustrating a call connection control method according to the present invention. When a program is started, the control type is distinguished by receiving a control command for reservation or provision of a program while providing a PPV service (121).

It returns after the program search and application reservation request processing (122), returns after the type 2 call / connection processing for program distribution (123), and returns after the call release processing while watching (124). Then, the new subscriber adds to the ongoing session and returns (125). It returns after call release processing by session termination (126).

FIG. 2 (a) is a characteristic diagram of a call / connection made in a program application reservation step of a PPV service, and (b) is a call / connection establishment procedure.

The subscriber A 203 connects to the PPV video server 204 to search for the program, and the point-to-point network connection group requests the setting to apply for viewing the desired program (211). The owner of this network connection group is A subscriber 203, may include one or more connections for transmission of multiple media, and type 1 (point-to-point) call / Use the ability to establish a connection. Once a Type 1 user channel is established, a user-to-user application protocol for program retrieval and application between subscriber A and the video server operates to reserve program viewing. The call / connection setup procedure is as follows.

A subscriber 203 requests ATM switch 201 to establish a call / connection with video server 204 (211, 212).

Upon receipt of this request, the ATM switch 201 verifies the content of the request and selects the destination interface resource.

The ATM switch 201 informs the video server 204 of the call / connection establishment intention that the video server can accept it (213, 214).

The ATM switch 201 instructs the video server 204 to establish a call / connection (215).

The ATM switch 201 informs the party A 203, the call owner, that the call / connection has been successfully established (216, 217).

The program is searched through the established user channel, the reservation is made, and the call is released.

FIG. 3 (a) is a characteristic diagram of a call / connection made in a program sending step of a PPV service, and (b) is a call / connection setting procedure diagram.

The video server 305 requests the ATM switch 301 to establish a point-to-multipoint call / connection for transmitting voice / video information to all subscribers when the program is scheduled for delivery. The owner and the root of this network connection group for program delivery are the video servers 305, and use the Type2 (point-to-multipoint) call / connection setup procedure according to the request of the root party among CS-2 signaling capabilities. The call / connection procedure is as follows.

The video server 305 requests the ATM switch 301 to establish a Type2 call / connection (311).

When the ATM switch 301 enters the Type 2 call / connection intention to the counterparties 303, 304 (312a, 312b, 313a, 313b).

The opponent parties 303 and 304 indicate that they can accept this (314a, 314b, 315a, 315b).

The ATM switch 301 informs the root party's video server 305 that the call / connection is established (316).

The ATM switch 301 instructs the other parties 303, 304 to establish a connection (317a, 317b, 318a, 318b).

Unidirectional user channel establishment between the video server and the subscribers is completed.

The video server may request additional configuration of a new bearer connection using the ability to additionally set up a Type2 connection by requesting a root party to send an announcement message for the upcoming program during the transmission of the program. After sending, it is released.

The video server can modify the bearer characteristics by using the modification support capability for the connection characteristics without reassigning or changing the path for the Type2 connection in the call activation stage in order to transmit sound information with high quality during program transmission.

4 is a diagram illustrating a procedure for releasing a call of a specific subscriber while watching a PPV program. If the A subscriber 403, who is connected to a particular channel and is watching a program, wants to stop watching the program, the A subscriber 403 requests this from the ATM switch 401. For the release of the A party, the party release capability is used at the request of the party itself to release the CS-2 signal capability. The release procedure of the A-party 403 is as follows.

If the A party 403 wishing to be released from the call requests the ATM switch 401 to release the party (411), the ATM switch 401 accepts it (412).

If the ATM switch 401 requests the access node 402 to which the A party 403 is connected (413), the access node 402 disconnects (414) the branch to which the A party is connected.

The ATM switch 401 notifies the video server 404 that is the root party that the A party has been released from the call (415).

5 is a procedure diagram for additionally connecting a new N party to an ongoing session (call). N subscriber 503 searches for a program according to the procedure shown in FIG. 2 and then applies for a program that is already in progress. The video server 504 knows that the program subscribed to by the N subscriber 503 is already active and is in progress, and adds a new party to the PPV-T2-1 / network connection group constituting the session. Ask 501. To this end, the additional signaling capability of one or more new parties is used by the request of the root party, and the N party 503 additional access procedure is as follows.

The video server 504 requests the ATM switch 501 to additionally connect the N party 503 to the PPV-T2-1 connection group (511).

If the ATM switch 501 informs the N party 503 that the call / connection has established a further connection intention (512, 513), the counterparty 503 can accept it (514, 515).

ATM switch 501 instructs N party 503 to establish a call / connection (516, 517).

The ATM switch 501 notifies the video server 504 that is the root party that the N party 503 is connected to the call / connection (518).

The N party 503 is connected to the PPV-T2-1 / connection to receive the program.

6 is a call release procedure diagram. When the video server 605, which is the call owner, ends the program in progress, it requests the ATM switch 601 to release the call. To release a call, the call owner's request for call release capability is used. The procedure is as follows.

The video server 605 requests the ATM switch 601 to release the call, and the ATM switch 601 accepts this (611 and 612).

The ATM switch 601 forwards the call release request to the connected Leaf party 603, 604 (613a, 613b) and the parties 603, 604 are released from the call (614a, 614b).

The ATM switch 601 requests the party to release the access node 602 (615) and the access node system does this (616).

The ATM switch 601 requests the bearer release from the access node 602 (617), and the access node system does this (618).

As described above, the present invention relates to a method of controlling call / connection using broadband CS-2 (Capability Set-2) signaling capability to provide a PPV service in an ATM network. By using the call / connection control method proposed in the present invention, it is possible to efficiently provide a commercial TV distribution service, and there is an advantage that can be applied to provide other types of point-to-multipoint distribution services.

Claims (6)

CLAIMS 1. A call / connection control method for providing a PPV commercial TV distribution service in an ATM network, comprising: a first step of determining a type of a control command to reserve or provide a program viewing while providing a PPV service; A second step of returning after executing the program search and request reservation request after performing the first step; A third step of returning after type 2 / connection processing for program distribution after performing the first step; A fourth step of performing the first step and returning after the middle call release process is being performed; A fifth step of performing after the first step and returning a new subscriber addition access process to an ongoing session; And a sixth step of returning after the call release processing according to the session type after the first step is performed. 2. The method of claim 1, wherein the second step comprises: A subscriber requesting an ATM exchange to establish a call / connection with a video server; The ATM exchange receiving the call connection establishment request verifies the request, selects the destination interface resource, and informs the video server that the video server can accept it when the ATM exchange informs the video server of the call / connection establishment. ; After the ATM exchange instructs the video server to establish a call / connection, the ATM exchange retrieves the program through the established user channel, including informing the party A, the call owner, that the call / connection was successfully established, and then reserves an application. Call / connection control method for providing PPV commercial TV distribution service in ATM, characterized in that call is released / 2. The method of claim 1, wherein the third step comprises the steps of: the video server requesting a type 2 call / connection setup from an ATM switch; Informing the counterparties that the counterparties can accept this if the ATM exchange has informed the counterparties of type 2 / connection establishment; The ATM exchange notifies the video server that is the root party that the call / connection has been established, and the ATM exchange instructs the other parties to establish a connection, indicating that the one-way user channel establishment between the video server and the subscribers is completed. Call / connection control method for providing PPV commercial TV distribution service in an ATM. 2. The method of claim 1, wherein the fourth step further comprises: if the A party wishing to be released from the call requests the ATM exchange to release the party, the ATM exchange accepts it; If the ATM switch requires the access node to which the A party is connected to disconnect the A party, the access node truncates the branch to which the A party is connected; A method of controlling a call / connection for providing a PPV commercial TV distribution service in an ATM, wherein the ATM switch notifies the video server which is the root party that the A party has been released from the call. 2. The method of claim 1, wherein the fifth step further comprises: the video server requesting the ATM switch to further connect the N party to the PPV-T2-1 connection group; Telling the N party that the other party can accept this, if it announces to the N party an additional connection establishment of the call / connection; The ATM switch instructing the N party to establish a call / connection, and the ATM switch notifying the root partner video server that the N party is connected to the call / connection; The N party is connected to the PPV-T2-1 / connection, the step of receiving a program, characterized in that the call / connection control method for providing a PPV commercial TV distribution service in ATM. 6. The method of claim 1, wherein fraudulent step 6 comprises: video service requesting the ATM exchange to release the call, and the ATM exchange accepting the call release; The ATM switch forwards the call release request to the connected leaf party, and the parties are released from the call; The ATM switch requesting the access node to release the party, and the access node system performs this step; The ATM switch includes requesting the bearer to release a bearer, and the access node system performs the above procedure.