KR19980066974A - Method of serving heterogeneous information simultaneously to multiple subscribers by synchronizing two B channels in narrowband Telecommunication Network - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

This is a method for synchronizing two B channels in a narrowband Telecommunication Network to simultaneously serve heterogeneous information to multiple subscribers

2. The technical problem to be solved by the invention

In a narrowband integrated IT network environment, one-to-many link is established based on the basic rate interface (BRI) and the primary rate interface (PRI), and the two B-channels connected from the terminal are utilized by maximizing the transmission rate. Grouping into one service channel, the text, video, and voice data related to the temporal order are properly synchronized and transmitted to the terminal to simultaneously service multiple terminal subscribers. I want to provide a way

3. Summary of Solution to Invention

In a narrow-band integrated information communication network, a method of simultaneously serving heterogeneous information to multiple terminal subscribers by synchronizing and using two B-channels for each terminal subscriber at a server side in the server side, wherein the server is connected to a call Waiting for the request reception, if the B1 and B2 connection is made between the server and the terminal by the call connection request from the terminal, the D-channel Call-Setup message used for accessing the respective B1 and B2 channels. Characterized by using the calling party number (Calling Party Number) of each B channel from the same terminal as a service channel to simultaneously service a large number of terminal subscribers of the character information, image information and voice information

4. Important uses of the invention

Used to synchronize two B-channels in a narrowband Telecommunication Network

Description

Method of serving heterogeneous information simultaneously to multiple subscribers by synchronizing two B channels in narrowband Telecommunication Network

The present invention relates to a method for synchronizing 2B channels in a narrowband general information network (N-ISDN), in particular one-to-many based on a basic speed interface (BRI) and a primary speed interface (PRI). A method of simultaneously serving a plurality of terminal subscribers at the same time by providing text information, video information, and voice information simultaneously while synchronizing and using two B channels for each terminal subscriber. It is about.

In the conventional case, a basic rate interface (BRI) connection technology in an ISDN uses a limited voice band service transmission rate (bandwidth: 3.1Khz, 64Kbps) of an ISDN. It provides voice information and services voice information or general information through a user network S interface (S-INTERFACE) installed in an ISDN phone (I-Phone) or a terminal computer (PC) through a single connection through 1B.

In addition, since the primary rate interface (PRI) connection technology for large-capacity connection has not been activated and commercialized until now, the development of a server-class system for various multimedia services is very small.

Therefore, the conventional data transmission technology of 64Kbps 1B channel could not be applied to multimedia data transmission that needs to transmit a large amount of data in real time, and even if two B channels are used, they are serviced by different independent channels. There was a problem that can not fully utilize the 128Kbps B-channel area. In the conventional case described above, since one channel is used exclusively for voice or data, there is a limit in that these channels cannot be divided and shared efficiently.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, by using the maximum transmission speed in a narrow-band integrated information network (N-ISDN) environment, the two B connected from the terminal The channel is bundled into one service channel, and the text, video, and voice data related to the temporal sequence are properly synchronized with the service channel, and transmitted to the terminal side at the same time. Its purpose is to provide a way to enable service.

1 is a block diagram schematically showing the configuration of a comprehensive information communication network to which the present invention is applied;

2 is a schematic diagram illustrating a configuration of service data transmitted and received when a service connection is made from a terminal to a server according to the present invention;

3 is a schematic diagram of a multiframe configuration used in the present invention;

4 is a flowchart of program execution in a terminal according to the present invention;

5 is a flowchart of program execution in a server according to the present invention;

In order to achieve the above object, the present invention provides a heterogeneous information service to multiple terminal subscribers simultaneously by synchronizing and using two B-channels for each terminal subscriber in a server side in a narrowband general information communication network. 1. The method of claim 1, wherein each terminal comprises a first step of requesting a call connection for each of the B1 and B2 channels to the server, so that the B1 and B2 connections are established between the server and the terminal; A second step of receiving a menu from the server through a user-to-user signal transmission (UUS) to make a menu selection; A third step of, if a menu is selected, performing (playing) of the selected menu is required; After receiving the audio ON signal from the server, the audio data (SERVICE.L, SERVICE.R), text data (SERVICE.T), and image information data (SERVICE.P) are recalled according to the menu selection. Receiving (414) a B channel; Left / Right audio data (SERVICE.L, SERVICE.R) received by analyzing the B channel is output as stereo sound through a speaker, and character data (SERVICE.T) and image information data ( SERVICE.P) includes a fifth step of displaying and outputting through a display screen,

The server waits to receive a call connection request, and when a B1 and B2 connection is made between the server and the terminal by a call connection request from the terminal, each server connects each B1 and B2 channel to the same terminal. A sixth step of binding the service channel (B channel); A seventh step of transmitting a menu to the terminal through signal transmission between users (UUS); An eighth step of checking whether there has been a menu selection request, and then checking whether a request for execution (play) of the selected menu is requested; After transmitting the audio on signal to the terminal, the left / right audio data (SERVICE.L, SERVICE.R) is transmitted to the terminal through the B channel, and the offset (OFFSET) is analyzed (517). A ninth step of transmitting to the terminal in the form of text data (SERVICE.T) or image information data (SERVICE.P); And a tenth step of checking whether there is more data to read, and repeating the process of transmitting the audio data (SERVICE.L, SERVICE.R), if any.

Further, in the sixth step, the server uses each calling party number from the same terminal by using the calling party number of the D-channel Call-Setup message used for accessing the respective B1 and B2 channels. It is characterized in that the channel is grouped into one service channel.

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

1 is a block diagram schematically showing the configuration of a comprehensive information communication network to which the present invention is applied.

The present invention provides a connection structure of a terminal and a server capable of providing an application service of 144 Kbps using B1, B2 channels and user-to-user signaling (UUS) in an N-ISDN environment. The basic algorithm used for

Systems to which the present invention is applied, such as ISDN HiFi stereo systems, are presented in the Telecommunication Standardization Sector of ITU (ITU-T) Recommendation G.722 (7Khz audio coding within 64 Kbps). That is, in addition to configuring an auxiliary data channel of 8 or 16 Kbit / sec by extracting one or two audio bits in one octet, text and images for providing a service are transmitted simultaneously with the audio. This is implemented using control data and synchronization information for this purpose. As transmission data used in the system to which the present invention is applied, for example, in the case of the ISDN HiFi stereo system, left audio data (56 Kbps), right audio data (56 Kbps), image And character data (6.8 Kbps), Frame Alignment Signal (FAS) Bit-rate Allocation Signal (BAS) code (3.2 Kbps), and control data (D-channel UUI).

And in order to perform these services satisfactorily on ISDN, additional control functions are required in addition to basic channel synchronization.

First, when a service connection is made from the terminal to the server, communication is performed between the terminal and the server. At this time, the type of data transmitted is largely service data including audio, image, and text, and audio control data transmitted for service. , Control data including menu data, service control data, and the like.

The service data is configured for each service, and basic data thereof is shown in FIG. 2.

As shown in Fig. 2, four data files are required for the service according to the present invention. In the figure, SERVICE.L and SERVICE.R are 7.1 Khz of audio data, SERVICE.T is a character data table used for the service of the present invention, and SERVICE.P is an image data table used for the service.

In the present invention, the synchronization of the left audio data SERVICE.L and the right audio data SERVICE.R constitutes a multiframe using recommendation H.221 proposed by ITU-T. This is schematically illustrated in FIG. 3.

In addition, in the present invention, a channel is set using the recommendation H.242 that sets up multiple channels using a bit-rate allocation signal (BAS) and a frame alignment signal (FAS) value. Then, two B channels are connected to one terminal using the D channel. The server binds each B channel from the same terminal to one service channel by using the calling party number of the D-channel Call-Setup message used to access each of the B1 and B2 channels. do. Accordingly, left / right audio data is loaded on a part of the B channel grouped into one service channel, so that the terminal can hear stereo sound.

On the other hand, the character table SERVICE.T includes a synchronization data field and a character data field. If the value in the synchronization data field coincides with an offset in the audio file, the character table SERVICE.T is transmitted through the data area of the B channel.

In the case of hi-fi stereo service, the moving picture is not provided due to the limitation of the transmission rate of the N-ISDN, but still picture transmission is possible. In this case, the still picture data also needs to be synchronized with the audio data.

The image data table SERVICE.P includes a synchronization field and an image name field used in a text field, and the image data is not transmitted if the corresponding image data already exists in the terminal because the data capacity is large. The determination is performed using the D channel.

As control data transmitted and received through D channel, audio control data includes ON / OFF function of audio, NEXT function, PREVIOUS function, and repeat function, and menu data is terminal in service There is a menu selection that informs the server of the menu provided by the server and the menu selected by the terminal for the user to select. The service control data includes a STOP message used when the user pauses the current service and wants another service, a user statistics request, a call cancellation request, and the like.

4 shows a program execution flow in a terminal according to the present invention. As shown in the figure, when the B1 and B2 connection is made between the server and the terminal by making a call connection request from the terminal to the server side (B1 and B2, respectively) (401, 403), a user-to-user signal transmission (UUS) The menu is transmitted from the server (D channel) 405. Then, it is checked whether the menu selection is made (407), and if not selected, the process returns to the process of receiving the menu again (405), and if it is selected, it is checked whether the menu has been played (409).

If the selected menu has not been played, check whether there is a STOP or Quit request (411), and if the stop or quit request is terminated, the execution is terminated. Return to step 405 above.

When the selected menu is played (409), after receiving an audio ON signal from the server (413), the audio data (SERVICE.L, SERVICE.R) and text data (SERVICE.T) according to the menu selection. , And image information data (SERVICE.P) are received over the B channel at a rate of 128 Kbps (414). In addition, an audio control function can be selected during service. The control data is transmitted and received through user-to-user information transfer (UUI) of the D channel.

Then, the B channel is analyzed (415) and the left / right audio data (SERVICE.L, SERVICE.R) received is output as stereo sound through the speaker (417), and the text data (SERVICE. T) and image information data SERVICE.P are displayed and output through the display screen (419, 421). Then, it is checked whether to continue the execution of other menus (423) or the execution ends, or the menu reception process (405) is repeatedly performed.

FIG. 5 is a flowchart illustrating a program execution in a server according to the present invention. When a call connection request is received (501), B1 and B2 connections are established between the server and the terminal by a call connection request from a terminal. Each of the B1 and B2 channels connected to the server is bundled into one service channel (hereinafter, simply referred to as B channel) for each same terminal, and a menu is transmitted to the terminal through UUS. 505). Then, it is checked whether there is a menu selection request (507), and if the menu selection is not requested, the process returns to the process 505 of transmitting the menu to the terminal again, and if the menu selection is requested from the terminal, the selected menu In step 509, the terminal determines whether a request for execution (play) has been made.

If the requested menu is not a request for execution (play), check whether there is a STOP / Quit request (511), and if the stop or exit request is requested, immediately terminate the execution, and stop or If there is no termination request, the process returns to the process 505 for transmitting the menu again.

When the selection request menu is requested to play (509), after transmitting an audio ON signal to the terminal (513), left / right audio data (SERVICE.L, SERVICE.R) is transmitted through the B channel. Transmission to the terminal (515).

Further, the offset (OFFSET) is analyzed (517) and transmitted to the terminal in the form of text data (SERVICE.T) or image information data (SERVICE.P) (519, 521) to determine whether there is more data to read. If it is confirmed (523), if the audio data (SERVICE.L, SERVICE.R) is transmitted repeatedly from the process (515), if not, it is determined whether to continue to perform other menus (525) to terminate the operation Otherwise, the menu reception process 505 is repeated.

In the above-described method, the present invention enables the transmission of still images synchronized with audio data during Hi-Fi stereo service in an N-ISDN environment.

The present invention as described above, by utilizing the bandwidth provided in the narrow-band Integrated Information Network (N-ISDN) to enable high-quality voice information of 7.1Khz bandwidth by synchronizing the 1B and 2B channels, each terminal computer A user network S interface is installed on a PC to form a point-to-multipoint link, and when such a HiFi stereo voice information service is provided, text and image information are accompanied by it. ISDN Basic Rate Interface (BRI: 2B + D) subscribers have an excellent effect of being able to service at the same time menu on-line connection at 144 Kbps.

In addition, the present invention is not only easily applicable to the development of a service providing technology using two B-channels in ISDN, and to the development of a network server capable of improving voice quality and providing application services in the ISDN. There is a wide variety of multimedia that ISDN uses the B-channel to process in real time a lot of data that requires menu searching in an on-line connection to basic rate interface (BRI) subscribers via text and video. Suitable for mold service.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and is not limited to the specific environment presented, and may be variously applied.

Claims (8)

In a method for simultaneously serving heterogeneous information to multiple terminal subscribers by synchronizing and using two B-channels for each terminal subscriber in a narrowband integrated information communication network, In each terminal, Requesting a call connection for the B1 and B2 channels to the server side, respectively, so as to make a B1 and B2 connection between the server and the terminal (401, 403); Receiving a menu from the server through a user-to-user signal transmission (UUS) (405), and making a menu selection (407); A fourth step of, if a menu is selected, to perform (play) execution of the selected menu (409); After receiving the audio ON signal from the server (413), the audio data (SERVICE.L, SERVICE.R), text data (SERVICE.T), and image information data (SERVICE.P) according to the menu selection. Receiving (414) over the B channel; And The left / right audio data received by analyzing the B channel (415) is output as stereo voice through a speaker (417), and the text data and image information data are displayed and output on a display screen (419, 421). Steps, On the server, While waiting for a call connection request (501), if a B1 and B2 connection is made between the server and the terminal by a call connection request from the terminal (503), each of the B1 and B2 channels connected to the server by the same terminal A sixth step of binding one service channel (B channel); A seventh step of transmitting (505) a menu to a terminal through a user-to-user signal transmission (UUS); An eighth step of checking whether there has been a menu selection request (507) and then checking (509) whether an action (play) on the selected menu is requested (509); After transmitting the audio ON signal to the terminal (513), the left / right audio data (SERVICE.L, SERVICE.R) is transmitted to the terminal through the B channel (515), the offset (OFFSET) A ninth step of analyzing (517) and transmitting (519, 521) to the terminal in the form of text data (SERVICE.T) or image information data (SERVICE.P); And Checking whether there is more data to read (523), and if there is, synchronizing the two B-channels in the narrowband Telecommunication network, comprising the tenth step of repeating the process (515). To simultaneously serve heterogeneous information to multiple terminal subscribers. The method according to claim 1, In the sixth step, the server uses the calling party number of the D-channel Call-Setup message used for accessing each of the B1 and B2 channels to call each B channel from the same terminal. A method for simultaneously serving heterogeneous information to multiple terminal subscribers by synchronizing two B-channels in a narrowband Telecommunications network characterized by grouping into one service channel. The method according to claim 1 or 2, After performing the third step, If the selected menu is not required to perform (play), check whether there has been a stop or stop (STOP / Quit) request (411) if the stop or end request is terminated, if there is no stop or end request again The method may further include an eleventh step of returning to the second step 405 for receiving a menu and repeatedly performing the menu. How to service at the same time. The method according to claim 1 or 2, In the fourth step 414, the audio data (SERVICE.L, SERVICE.R), the text data (SERVICE.T), and the image information data (SERVICE.P) received through the B channel are at a rate of 128 Kbps. A method for simultaneously serving heterogeneous information to a plurality of terminal subscribers by synchronizing two B channels in a narrowband Telecommunications network characterized in that received. The method according to claim 1 or 2, After performing the fifth step, it is determined whether to continue the execution of the other menu (423), and further comprising a twelfth step of performing repeatedly from the menu receiving process (405) of the second step A method for simultaneously providing heterogeneous information to multiple terminal subscribers by synchronizing two B-channels in a broadband integrated information communication network. The method according to claim 1 or 2, After performing the eighth step, If the requested menu is not required to be executed (played), it is checked whether there is a STOP or Quit request (511), and if the stop or terminate request is found, execution ends, and the stop or end request is If not, the method further includes a thirteenth step of returning to the seventh step 505 for transmitting a menu again to repeat the menu, thereby synchronizing two B-channels in a narrowband ICT network. Method of simultaneously serving terminal subscribers. The method according to claim 1 or 2, After performing the tenth step, it is determined whether to continue to perform other menus (525), and further comprising the fourteenth step of repeating the operation from the menu receiving process (505) of the seventh step A method for simultaneously providing heterogeneous information to multiple terminal subscribers by synchronizing two B-channels in a broadband integrated information communication network. The method according to claim 1 or 2, The text table (SERVICE.T) includes a synchronization data field and a text data field, and when a value in the synchronization data field matches an offset in an audio file, it is transmitted through the data area of the B channel. A method for simultaneously providing heterogeneous information to multiple terminal subscribers by synchronizing two B-channels in a narrow-band integrated telecommunication network.