KR20050117875A - Service providing method of umts system using guidance broadcast to pstn subscriber telephone - Google Patents

Abstract

The present invention relates to the provision of an IMT-2000 service, and in particular, a subscriber to the user by selecting the desired service, such as modem, fax, multimedia, etc. as well as voice service by using the announcement broadcast when transmitting to the UMTS terminal to the public network (PSTN) subscriber terminal It is about providing service with public network terminal using announcement broadcasting in UMTS system that can provide the desired service quickly, process various services with one subscriber number, and use limited subscriber number in a large capacity system.

The present invention provides a service capable of providing voice, fax, modem, multimedia, and the like by performing announcements from the announcement board of the MGW to the public network subscriber terminal under the control of the VMSC when the UMTS subscriber terminal is transmitted to the public network (PSTN) subscriber wired terminal. By selecting the desired service, the connection time can be greatly reduced, and the control signal for searching for the desired service of the calling party can be reduced, thereby reducing the load on the system.

Description

Service handling method with public network terminal using announcement broadcasting in UTM system {Service providing method of UMTS system using guidance broadcast to PSTN subscriber telephone}

The present invention relates to the provision of an IMT-2000 service, and in particular, a desired service such as a modem, a fax, a multimedia, etc., by using an announcement broadcast when transmitting to a Universal Mobile Telecommunication System (UMTS) terminal to a public network (PSTN) subscriber terminal. Service selection with the public network terminal using announcement broadcasting in UMTS system that can provide the desired service to subscribers quickly by selecting the service and process various services with one subscriber number and use the limited subscriber number in the large-capacity system to the maximum It is about a method.

In general, UMTS is a third-generation global mobile phone system that is intended to apply new technologies while further improving the services provided by conventional wireless networks. As a method of implementing a UMTS system, a method using ATM and IP has been proposed. The long-term system of the European Telecommunications Standards Association (ETSI) is an integrated mobile communication system that combines all kinds of mobile communications, including cellular mobile telephony, cordless telephony, telepoint, wireless LAN and wireless paging. The UMTS system is limited to the data transmission speed according to the user's location and the capacity of the system, so that the same type of service can be provided without any limitation in the place. The UMTS system is a third generation mobile communication system that provides an integrated service including a voice service, a modem, a fax, and a multimedia data service through a single terminal.

1 illustrates a UMTS network configuration diagram.

UMTS is a third generation wireless communication system that provides integrated data services such as voice, modem, and fax as well as multimedia at high speed.

The service can be divided into voice and data service. The standard for voice service with external network in UMTS network is defined in 3GPP TS 25.415, and the standard for data service with external network is defined in 3GPP TR 23.910. .

The UMTS network is a third generation mobile communication network that is largely divided into a CS area (CS-Domain) 10 for processing data and a PSTN / ISDN, and a PS area (PS-Domain) 20 for processing IP data.

In order to provide data service between a UMTS subscriber using an asynchronous IMT-2000 terminal and a public network (PSTN) subscriber terminal, an IWF (Inter Working Function) 14 block in a media gateway (MGW) 12 is necessarily connected.

In the IWF 14 block, ATM (Asynchronous Transfer Mode) data from the UMTS network is converted into TDM (Time-Division Multiplexing) data for transmission to the PSTN / ISDN network and transmitted.

2 illustrates a configuration of a mobile equipment (ME) 30.

The mobile device is composed of a mobile terminal (MT) 32 and a conventional data service equipment (TE) 34, and the terminal 32 has a function of connecting the terminal 32 and the data service equipment 34. A terminal adaptation function (TAF) 36 is built in.

FIG. 3 is a protocol stack for providing a UMTS voice service. FIGS. 4 and 5 are 3GPP data service standards. FIG. 4 is a synchronous transparent data service protocol stack. FIG. 5 shows an asynchronous transparent data service protocol stack.

When providing an asynchronous transparent data service as shown in FIG. 5, a RA0 (Rate Adaptation 0) 40 function is added to convert synchronous data into asynchronous data.

6 illustrates an asynchronous non-transparent data service protocol stack and is typically used when providing a fax service.

When the data transmitted from the terminal is converted into ATM data in the Radio Network Controller (RNC) system and transmitted to the MGW (Media GateWay), the IWF block according to the type of service in FIG. 3, 4, 5, and 6 respectively shows the TDM. (Time-Division Multiplexing) Converts into data and transmits it to the subscribers of the public network for service.

Figure 7 shows the configuration of a conventional MGW / IWF board.

MGW / IWF board is composed of ATM switch 62 and IWF 70 block in MGW (Media GateWay) 60 system as shown in figure, and IWF 70 converts ATM data into TDM data. , ATM switch 72, voice / data processing board 74, and TDM switch 76 board.

The ATM switch 62 in the MGW 60 is a role for designating a moving path of ATM data flowing into the MGW 60, and the MGW 60 transmits or receives a call or data to and from a UMTS network subscriber and a public network (PSTN) subscriber. A route is set to the IWF 70 block, and the ATM data is converted into TDM data and transmitted.

Conventionally, when a UMTS terminal transmits or receives a call or data to or from a public network (PSTN) subscriber, the transmitting UMTS terminal transmits a control signal for a service through a control path instead of a call path, thereby making a call or data transmission and reception by an IWF.

However, in the case of transmitting or receiving a call or data to a UMTS subscriber station from a public network (PSTN) subscriber station, UMTS does not know what services the public network subscriber requires.

Therefore, there is a problem in that it takes a long time to connect because it is necessary to determine whether the data to be transmitted is data such as voice calls, faxes, and modems.

Meanwhile, the 3GPP standard (TS 29.007) proposes two methods of multi-numbering scheme and single-numbering scheme.

8 is a diagram illustrating a multi-numbering scheme, in which a unique number is assigned to a modem, a fax, and a multimedia service provided by a UMTS terminal to compare one-to-one in a call or data transmission and reception in a public network. There is an advantage that the control message for the connection is reduced, and the connection time is short because it is directly connected.

However, since the subscriber number is assigned to each service, as the number of services provided increases, the number of management numbers for one subscriber increases, so it is very inconvenient to manage because the number corresponding to the service must be known in terms of subscribers. Since it has a limited number of subscribers, if the service has a large number of subscribers, the number of subscribers is limited.

In addition, when an existing subscriber wants to add a new service, it is inconvenient to be assigned a new number by a service provider.

FIG. 9 shows a single-numbering scheme, which can provide all services with a single number, and analyzes the services provided by the subscribers of the public network with a single number and provides a voice or data service corresponding thereto. do.

This method uses the Subscription Check to find the service that the calling party wants in the Virtualized Mobile Switching Center (VMSC) because the UMTS network does not know the service required by the subscriber station of the public network. ).

That is, if there is a response by providing one data service owned by the UMTS terminal of the called party, if there is no response, the corresponding service is provided. If there is no response by the timeout, the next service is waited for the response. Provide voice service.

In this method, it may take a long time to find a matching service by comparing a service desired by the calling party with a service owned by the UMTS terminal, and has a problem that requires a lot of control signals because many services need to be compared.

The present invention has been made to solve the above-mentioned problems, by broadcasting to the public network subscriber terminal from the announcement board of the MGW to the public network subscriber terminal under the control of the VMSC when transmitting to the UMTS subscriber terminal as a public network (PSTN) subscriber wired terminal, voice, fax, modem It can reduce the load of the system by reducing the connection time and reducing the control signal to find the desired service of the calling party by informing the available services such as multimedia and selecting the desired service. It is an object of the present invention to provide a service processing method with a public network terminal using announcement broadcasting in a UMTS system capable of maximizing a limited subscriber number in a large-capacity system by processing various services by number.

In accordance with an aspect of the present invention, a subscriber to a public network (PSTN / ISDN) transmits a call request request signal to a UMTS subscriber station to a terminal, and receives the call call request signal from a VMSC to send a guide broadcast execution message to an MGW. Transmitting the announcement through the public network from the announcement board of the MGW to the public subscriber station; selecting a desired service number from the public subscriber station; using the DTMF in the voice / data processing board of the IWF. Detecting and performing call processing for providing the selected service in the VMSC; and connecting a call between the public network subscriber station and the UMTS subscriber station to provide the selected service.

Below. Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

10 is a schematic diagram of the MGW / IWF incorporating the announcement board of the present invention. The ATM switch 62 in the MGW 60, the ATM switch 72 in the IWF 70, and the voice / data processing board ( 74), a time-division multiplexing (TDM) switch 76, and an announcement board 80.

The ATM switch 62 in the MGW 60 designates a connection path of ATM data input from a UMTS terminal subscriber. An IWF 70 is required for a call connection with a public network.

The IWF 70 functions to interface with the public network, and the ATM switch 72 in the IWF 70 looks at the Virtual Path Identifier (VPI) and the Virtual Channel Identifier (VCI) of the incoming ATM data. The path is set to be connected to the board having the corresponding VPI and VCI from the processing board 74.

The ATM data entered into the voice / data processing board 74 is converted into TDM data according to a process of providing a service and transmitted to the public network (PSTN / ISDN) via a time-division multiplexing (TDM) switch 76.

The announcement board 80 transmits the announcement message only to the caller when the announcement is made from a public network (PSTN / ISDN) subscriber station, and does not need the announcement when the call is made between a mobile terminal or a UMTS subscriber station.

The announcement board 80 provides a public announcement for selecting a service to a public network (PSTN / ISDN) subscriber station and the public network subscriber informs a desired service by pressing a button of the terminal.

11 is a flowchart for providing a voice / data service using an announcement board.

The procedure for the case where a public network subscriber requests voice or data service to a UMTS subscriber by wire telephone is as follows.

First, when a call attempt is made with a UMTS subscriber in a public network, a caller's location information and request service information (Send Routing Information) are requested from a calling MSC (GMSC) to a Home Location Register (HLR) (ST90). , ST91).

However, since the HLR does not know the request service of the public subscriber station as the calling party, the HLR requests the roaming number (PRN) of the called party from the HLR to the Visitor Location Register (VLR) (ST92).

The VLR provides only the roaming number (MSRN: Mobile Station Roaming Number) to the HLR and back to the calling exchange (GMSC: Gateway MSC), and the calling exchange sends a request message to the VMSC (Visited MSC) at the calling exchange (Initial). When sending an address message, the VMSC sends a sender requirement (SIFICSU: Send Information For Incoming Call Set Up) to the VLR and confirms receipt (ST93 ~ ST97).

However, VMSC does not know the service that the calling party wants, so it only informs UMTS MS (Mobile Station) terminal of the call connection request.

The MS informs VMSC of its service information (ST98, ST99).

When the VMSC receives the service information available from the MS, it notifies the public subscriber station serving as the calling party to the service selectable by the announcement broadcasting board 80 of the MGW 60, and inputs DTMF from the public subscriber network of the calling party. Wait (ST100, ST101).

The DTMF input message sent from the public subscriber station of the calling party is detected by the voice data processing board 74 of the MGW / IWF.

According to the detected service, the VMSC creates a data channel to the MS and transmits an answer message (ANM: Answer Message) to the GMSC, which is the calling party's public subscriber exchange, to connect the terminal of the public subscriber to the MS of the UMTS network subscriber (ST102, ST103).

On the other hand, Figure 12 is a flow chart for providing a service selected by the public network subscriber terminal of the calling party through the voice / data processing board 74 and the announcement board 80.

12 is a detailed flowchart of steps ST100 and ST101 of FIG. 11.

The VMSC announces the service of the UMTS terminal subscriber to the public network subscriber terminal through the announcement board 80 through the announcement, and requests the public network subscriber to select DTMF (Dual Tone Multi Frequency) as the announcement announcement (ACK) message. (ST200, ST201).

The voice / data processing board 74 in the IWF detects DTMF for the service selected by the calling party and informs VMSC, which is the upper end, what kind of service is the request message of the calling party's public network subscriber station, and performs call processing accordingly. To provide.

 The public network subscriber station, which is the calling party, can select voice, modem, fax, multimedia and other services provided (ST202, ST203).

If the DTMF is not selected at the subscriber's public network subscriber station, if the waiting time for the acknowledgment (ACK) message has elapsed, the DTMF of the desired service should be selected among the functions of the modem and the fax. The service is provided by converting the service, and if the modem and the fax service are selected, the service is connected (ST204 ~ ST207).

The present invention is to inform and select the desired service to the public network subscriber station of the calling party through the announcement broadcast to compare the existing services and the services required by the calling public network subscriber station of the existing UMTS terminal subscribers Compared to this, the amount of control messages is reduced and the desired service can be provided quickly.

As described above, the present invention is a single-numbering scheme for processing a single subscriber number using announcement broadcasting to provide various data services. The present invention relates to a public network (PSTN) network in an asynchronous system UMTS system. In the case of providing various data services such as modem, fax, and multimedia as well as voice service, a single number is provided to provide guidance services in the guide broadcasting board 80 of the MGW 60 to provide multiple services with a single subscriber number (Single -numbering Scheme), a large-capacity system that provides services to many subscribers can not only use limited subscriber numbers to the maximum, but also can quickly provide the desired service to public network subscribers who want to use the public network to send / receive calls / data with UMTS subscribers. Can provide.

In addition, the public network subscriber as the calling party informs the desired service, so the comparison process may be omitted or reduced, thereby providing various services to more subscribers.

1 is a UMTS network configuration diagram,

2 is a block diagram of a mobile equipment (ME) 30,

3 is a protocol stack for providing a UMTS voice service,

4 is a synchronous transparent data service protocol stack,

5 is an asynchronous transparent data service protocol stack,

6 is an asynchronous, non-transparent data service protocol stack,

7 is a configuration diagram of a conventional MGW / IWF board,

8 is an example of a multi-numbering scheme of the 3GPP standard.

9 is an example of a single-numbering scheme of the 3GPP standard.

10 is a configuration diagram of the MGW / IWF incorporating the announcement board of the present invention.

11 is a flowchart for providing a voice / data service using an announcement board;

12 is a flowchart of providing a service through a voice / data processing board and a guide broadcasting board.

<Description of Major Symbols in Drawing>

60: MGW 62, 72: ATM switch

70: IWF 74: Voice / Data Processing Board

76: TDM switch 80: announcement board

Claims (3)

Transmitting, by a PSTN / ISDN subscriber, a call request signal to a UMTS subscriber station; Receiving the call call request signal from a VMSC and transmitting an announcement broadcast execution message to an MGW; Transmitting the announcement broadcast from the announcement broadcast board of the MGW to the public subscriber station via a public network; Selecting a desired service number to the public network subscriber station; Detecting a DTMF from the voice / data processing board of the IWF using the service number to perform a call processing for providing a selected service in a VMSC; And providing a selected service by connecting a call between the public subscriber station and the UMTS subscriber station. The method of claim 1, Selecting the desired service number to the public network subscriber station, A service processing method with a public network terminal using guide broadcasting in a UTM system, characterized in that a desired service is selected from a menu such as voice, fax, modem, and multimedia. The method of claim 1, Selecting the desired service number to the public network subscriber station, If the subscriber does not select a desired service within a certain time, selecting whether the desired service is a fax / modem service; Providing a service by connecting to a UMTS terminal in a VMSC when the subscriber selects the fax / modem service; If the desired service is not the fax / modem service, connecting the voice service with the UMTS terminal in the VMSC.