KR100704263B1 - Method for providing multimedia ring back tone service via 3th generation mobile communication network and system of enabling the method - Google Patents

Abstract

The present invention relates to a method and system for providing a multimedia ringback tone service through a 3G mobile communication network capable of circuit-based multimedia service. More particularly, the present invention relates to a method for providing a line-based multimedia service when providing a multimedia ringback tone service in a conventional 3G mobile communication network. A method for providing a multimedia ringback tone service that minimizes the delay time required for a call connection due to an additional procedure performed according to the 324M communication protocol and does not require resource occupancy with additional calls from call connection to call termination. It is about. According to the present invention, in providing a multimedia ringback tone service through a 3G mobile communication network, a technology capable of providing a multimedia ringback tone service for minimizing a delay time required for protocol calibration between a calling terminal and a called terminal. The effect can be obtained.

Multimedia, Ringback Tone, H.223M, H.245M, H.324M, Intelligent Network, 3GPP

Description

３Ｇ METHOD FOR PROVIDING MULTIMEDIA RING BACK TONE SERVICE VIA 3TH GENERATION MOBILE COMMUNICATION NETWORK AND SYSTEM OF ENABLING THE METHOD}

1 is a diagram illustrating a procedure of a method for providing a multimedia ring back tone service according to the prior art.

2 is a diagram illustrating an example of a communication system configuration in which a method for providing a multimedia ringback tone service according to the present invention may be employed.

3 is a flowchart illustrating a method for providing a multimedia ringback tone service according to a first embodiment of the present invention.

4 is a diagram illustrating a flow of a method for providing a multimedia ringback tone service when transcoding is required among the methods for providing a multimedia ringback tone service according to the first embodiment of the present invention.

5 is a flowchart illustrating a method for providing a multimedia ringback tone service according to a second embodiment of the present invention.

6 is a flow diagram illustrating a method for providing a multimedia ringback tone service according to a third embodiment of the present invention.

Figure 7 is a block diagram showing the configuration of IP equipment for providing a multimedia ring back tone service according to the present invention.

8 is a block diagram showing the configuration of the call signal matching unit of the intelligent network equipment according to the present invention.

9 is a block diagram showing the configuration of a service control matching unit of the intelligent network equipment according to the present invention.

10 is a block diagram showing the configuration of the basic call control unit of the intelligent network equipment according to the present invention.

Figure 11 is a block diagram showing the configuration of a multimedia control unit of the intelligent network equipment according to the present invention.

<Explanation of symbols for the main parts of the drawings>

310: call generation step between calling terminal, called terminal, and IP equipment

320: H.223 level setting, H.245 negotiation procedure, and multimedia data transmission step

330: Determining whether or not to perform transcoding of IP equipment and termination or maintenance of IP channel connection

The present invention relates to a method and system for providing a multimedia ringback tone service through a 3G mobile communication network, and more particularly, to a call connection due to an additional procedure performed according to a communication protocol when providing a multimedia ringback tone service in a conventional 3G mobile communication network. In addition to minimizing the delay time, the present invention relates to a method and system for providing a multimedia ringback tone service that does not require resource occupancy with additional calls from call connection to call termination.

Recently, various additional services are provided through a mobile communication network. In addition to the monotonous call service in the conventional communication network, such supplementary services are provided with a ringback tone replacement sound service (also known as a coloring service) or a text-based caller ID (CID) service that can express the user's personality. Services are constantly evolving as the network evolves and technology advances.

Typically, when a multimedia call is performed in a 3G-324M or H.324M network, additional procedures such as H.223 level setting and H.245 negotiation procedures are performed between the calling terminal and the called terminal after the call is connected. . Due to the protocol calibration between the calling terminal and the called terminal, there is a technical problem that such a multimedia call takes longer than a voice call in a conventional mobile communication network.

1 is a diagram illustrating a procedure of a method for providing a multimedia ring back tone service according to the prior art.

In Figure 1, MS _o The calling terminal, MSC _O MSC stands for Mobile Switching Center Originating (MSC), Intelligent Peripheral (IP) for intelligent network equipment, MSC _T stands for Mobile Switching Center Originating Terminating (MSC), and MS _T stands for called terminal do.

As shown in FIG. 1, IP receives a call setup request transmitted from an originating terminal from MSC _O and requests a call connection to a called terminal through MSC _T. IP performs H.223 level setting and H245 negotiation procedure with the calling terminal, and plays and transmits predetermined multimedia ringback tone data to the calling terminal. Thereafter, when the called terminal user accepts a call and a hook off of the called terminal is performed and a call is connected to the calling terminal, the IP device stops playing the multimedia ringback tone data, and the calling terminal And release the connection with the called terminal.

When the IP device releases the connection between the calling terminal and the called terminal, the calling terminal and the called terminal repeat the H.223 level setting and H.245 negotiation procedure with each other. In addition to the H.223 level setting and re-execution of the H.245 negotiation procedure, the calling terminal and the called terminal may perform a video call with each other.

As such, in a conventional multimedia ringback tone providing service, an IP device performs a H.223 level setting and an H.245 negotiation procedure with the calling terminal after connecting a call with a calling terminal to transmit multimedia ringback tone data to the calling terminal. Play it and send it. Then, when the actual call connection between the calling terminal and the called terminal is performed, the connection between the calling terminal and the called terminal of the IP is released, so that H.223 level setting and H.245 between the calling terminal and the called terminal are established. The negotiation process will have to be redone.

Therefore, in the above conventional technology, while the multimedia ringback tone data is reproduced, the IP equipment cannot perform the H.223 level setting and the H.245 negotiation procedure with the called terminal, and the H between the calling terminal and the called terminal. Since the .223 level setting and the H.245 negotiation procedure have to be performed again, there is a problem that the call connection time is significantly delayed.

In order to solve this problem, a method of performing H.223 level setting and H.245 negotiation procedure between the IP equipment and the receiving terminal while the multimedia ringback tone data is being played is presented. Since the originating terminal and the terminating terminal must maintain the call via the IP equipment, it causes another problem in that resource occupancy is necessary for an additional call.

The present invention has been made to improve the problems of the prior art as described above, in providing a multimedia ringback tone service through the 3G / WCDMA mobile communication network is required for the protocol calibration (Calibration) between the calling terminal and the called terminal An object of the present invention is to provide a multimedia ringback tone service which minimizes call call delay time.

In addition, the present invention provides an intelligent network-based multimedia ringback tone service, to provide a multimedia ringback tone service to prevent the resource occupied by additional calls generated by protocol matching between the calling terminal and the called terminal. For that purpose.

In addition, an object of the present invention is to minimize the mobile communication network resource occupancy by performing protocol matching between the calling terminal and the called terminal in the IP equipment when providing a multimedia ringback tone service.

In order to achieve the above object of the present invention, the first operation method of the intelligent network equipment for providing a multimedia ringback tone service through the mobile communication network according to the present invention, transmitted from the mobile switching center (MSC: Mobile Switching Center) in the originating terminal Receiving a received call setup request, wherein the call setup request includes subscriber profile information on a multimedia ringback tone service, requesting a call connection to a called terminal through the MSC, .223 performing level setting, performing an H.245 negotiation procedure with the calling terminal, referencing a predetermined subscriber database, and sending predetermined multimedia data set by the caller or the called party to the calling terminal. Playing and transmitting, setting an H.223 level and H.245 negotiation with the called terminal; Performing a procedure, wherein the negotiation procedure is performed using information of the calling terminal; and stopping playback of the multimedia data in response to a hook off response of the called terminal. It is characterized by.

In addition, a second operation method of an intelligent network equipment for providing a multimedia ringback tone service through a communication network according to the present invention comprises the steps of: receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-the The call establishment request includes subscriber profile information of the caller or called party on the multimedia ringback tone service; requesting a call connection to the called terminal through the MSC; and setting the H.223 level with the calling terminal and the called terminal, respectively. Performing an H.245 negotiation procedure with the calling terminal and the called terminal, respectively-the negotiation procedure with the calling terminal is performed using information of the called terminal, and the called terminal The negotiation procedure with the subscriber is performed by using the information of the calling terminal. Referring to a database, reproducing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal; and stopping playback of the multimedia data in response to a hook off response of the called terminal; Characterized in that it comprises a step.

In addition, a third operation method of an intelligent network equipment for providing a multimedia ringback tone service through a communication network according to the present invention, the method comprising: receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-the The call establishment request includes subscriber profile information on a multimedia ringback tone service by a caller or a called party; requesting a call connection to a called terminal through the MSC; Transmitting a query for capability information, receiving a response to the query from the terminal information database, performing an H.223 level setting and an H.245 negotiation procedure with the originating terminal-the The negotiation procedure is performed by using the information of the called terminal-, predetermined subscription Playing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal, performing a H.223 level setting and an H.245 negotiation procedure with the called terminal; The negotiation procedure may be performed by using the information of the calling terminal, and stopping the reproduction of the multimedia data in response to a hook off response of the called terminal.

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

2 is a diagram illustrating an example of a communication system configuration in which a method for providing a multimedia ringback tone service according to the present invention may be employed.

The method for providing a multimedia ringback tone service according to the present invention may be implemented in an intelligent network (IN) based communication network shown in FIG. 2, preferably, a third generation communication network called 3GPP. The intelligent network (IN) may be applied to all communication networks such as a public switched telephone network (PSTN), an integrated services digital network (ISDN), and a public land mobile network (PLMN). As a structural concept, a service provider and an equipment provider can define a service independently of each other to implement a network.

The third generation communication network is called UMTS (Universal Mobile Telecommunication System), which is a communication system capable of high performance transmission and reception suitable for mobile computing that can provide multimedia data services including both voice and video, and has been spotlighted in implementing this system. There is Wideband Code Division Multiple Access (WCDMA).

WCDMA will be used in the same frequency bands in Asia, including Europe and Korea, Japan, and has been standardized in the 3G Generation Partnership Project (3GPP), a standardization project in Europe, Korea, Japan, the United States, and China.

As shown in Figure 2, the system configuration for providing a multimedia ringback tone service according to the present invention, 3G H324M terminal, 3G MSC (Mobile Switching Center) / BSC (Base Station Controller) / BTS (Base Transceiver Station), IP (Intelligent Peripheral), a Home Location Register (HLR), and a Service Control Point (SCP).

The 3G H324M terminal can be applied to both the calling terminal and the called terminal. The H324M terminal is a commonly referred to as a video telephone terminal and can support the 3GPP standard H.263 video codec and AMR audio codec. In addition, the 3G H324M terminal can be linked to both the IP terminal and the destination terminal to the IP equipment and E1 / T1 network.

3G MSC / BSC / BTS can be connected to IP equipment and HLR or SCP with SS7 (Signalling System No.7) network. HLR and IP device can perform MAP (Mobile Application Protocol) / SS7 protocol or ISUP (ISDN User Part) / SS7 protocol access through SS7 network, and SCP and IP Jangbar are CAP (CAMEL Application Protocol) through SS7 network. ) / SS7 protocol or ISUP / SS7 protocol connection. The SS7 may include a transaction processing signal for an intelligent network service and data and control signals for operation management of a transport layer, in addition to a signal for normal call processing.

3 is a diagram illustrating a flow of a method for providing a multimedia ring back tone service according to a first embodiment of the present invention.

The method for providing a multimedia ringback tone service according to the first embodiment of the present invention basically performs an H.223 level setting and an H.245 negotiation procedure between the calling terminal and the called terminal and the IP equipment, and the called terminal and the IP equipment. The H.223 level establishment and H.245 negotiation procedures are characterized by performing using the information of the receiving originating terminal (the IP device operates as if it is the originating terminal), rather than using the information of the IP equipment. The details will be described below with reference to FIG. 3.

MS _o shown in Figure 3 is the originating terminal, MSC _O MS stands for Mobile Switching Center Originating (MSC), Intelligent Peripheral (IP) for intelligent network equipment, MSC _T stands for Mobile Switching Center Originating Terminating (MSC), and MS _T stands for called terminal . The term is equally applicable to the following description of the drawings.

In step 310, when the calling terminal receives a call attempt request from the calling party, the calling terminal generates a predetermined call and transmits SETUP to the MSC _O. The MSC _O is the initial eodeure's message to the MSC _T: a connection request by sending (IAM Initial Address Message) and, MSC _T receives the Alert for the call from the called terminal sends the SETUP to the called terminal. The MSC _T sends an address complete message (ACM) to the MSC _O , and the MSC _T alerts the originating terminal to confirm the call occurrence.

At this time, the MSC _T transmits an initial address message to the IP device and receives an address complete message and an answer message (ANM) from the IP device, thereby making a call between the calling terminal and the called terminal via the IP device. A ringback tone service call connection can be performed for an occurrence.

In addition, in step 310, when the MSC _O receives the SETUP from the calling terminal, after searching for a subscriber profile such as a home location register (HLR) using the calling or called terminal ID included in the SETUP, It may be determined whether the caller or called party is the subscriber of the multimedia ringback tone service.

As will be appreciated by those skilled in the art, determining whether a caller is a subscriber of a multimedia ringback tone service may be applied in a ringback tone providing service in a Ring to Me manner. Determining whether the subscriber is a multimedia ringback tone service may be applied to a ringback tone providing service of a ring to you method.

As a result of the determination, when the caller or the called party is a subscriber of the multimedia ringback tone service, a call is connected through an IP device, and a first channel is formed between the calling terminal and the IP device, and a second channel is connected between the IP device and the called terminal. Is formed.

In step 320, the IP device performs an H.223 level setting and H.245 negotiation procedure with the calling terminal. In the H.223 level setting, the IP device sets a synchronization flag to be used for each level of H.223 composed of a total of four levels of 0, 1, 2, and 3 levels. Send continuously to the calling terminal. When the at least 16 flags received from the originating terminal and the transmitted flags are the same, the IP device completes the H.223 level setting. The level setting may be set while descending from a high level level to a low level level.

In addition, an H.245 negotiation procedure is performed between the calling terminal and the IP device, and the IP device refers to a predetermined subscriber database (for example, HLR), and sets multimedia data set by the caller or the called party. Read and play it and transmit it to the calling terminal. The multimedia data may be transmitted to the calling terminal via MSC _O and MSC _T.

Along with the transmission of the multimedia data to the originating terminal, the MSC _T attempts to establish a relay call with the IP device. The MSC _T transmits an initial address message to the IP device, and performs the relay call connection by receiving an address complete message and an answer message (ANM) from the IP device.

When the relay call is connected, the IP device performs the H.223 level setting and the H.245 negotiation procedure with the called terminal. The H.223 level setting of the IP device and the called terminal may be performed in the same manner as the H.223 level setting of the IP device and the calling terminal. However, by setting the H.223 level of the IP device and the called terminal to a level set between the IP device and the calling terminal, it is possible to synchronize the set level between both terminals and the IP device.

In addition, the H.245 negotiation procedure of the IP equipment and the called terminal may be performed using information of the calling terminal or the called terminal, for example, voice and video codec information to be used for a call. The H.223 level setting and H.245 negotiation procedure of the IP equipment and the called terminal may be performed via the MSC _T.

In step 330, when an event such as the called party of the Hook off response, i.e., the called party accepts the call, the called terminal may attempt a call connection to the MSC _T, and the MSC _T sends a response message to the MSC _O The MSC _O attempts to make a call connection to the calling terminal, whereby a call connection between the calling terminal and the called terminal is connected.

When a call connection between the calling terminal and the called terminal is connected, the IP device stops playing and transmitting the multimedia data. At this time, the IP device determines whether an additional negotiation procedure between the calling terminal and the called terminal is required. The determination of the necessity of the additional negotiation procedure may be performed by comparing the audio and video codec information to be used for the call at the calling terminal and the called terminal and the H.223 level.

As a result of determining whether the additional negotiation procedure is necessary, when the additional negotiation procedure is not needed, the IP device requests switching control to MSC _T. Upon receiving the switching control request, the MSC _T closes the first channel formed between the IP equipment and the calling terminal and the second channel formed between the IP equipment and the called terminal and connects a channel between the calling terminal and the called terminal.

Thus, the calling terminal and the called terminal can provide a video call to the user through a call connected directly without passing through the IP equipment. Therefore, call delay time can be prevented in advance, and the occupancy of resources with additional calls can also be prevented.

In operation 330, if it is determined that the additional negotiation procedure is necessary, the IP equipment maintains the first channel and the second channel. Transcoding can be performed. This will be described in more detail with reference to FIG. 4.

FIG. 4 is a diagram illustrating a flow of a method for providing a multimedia ringback tone service when transcoding is required among the methods for providing a multimedia ringback tone service according to the first embodiment of the present invention.

Since the method for providing a multimedia ringback tone service in steps 410 and 420 illustrated in FIG. 4 is performed in the same manner as in steps 310 and 320 of FIG. 3, steps 410 and ( The description of 420 will be omitted with reference to FIG. 3.

In step 430, if it is determined that transcoding is necessary, for example, when the calling terminal is set to the IP equipment and the H.263 video codec, and the called terminal is set to the IP equipment and the MPEG4 codec, Transcoding can be prepared to avoid the delays required for additional negotiation procedures.

In this case, the IP device may maintain the IP first channel and the second channel, which are call connection channels between the MSC _O and the MSC _T. The IP device may perform a transcoding on the multimedia data transmitted between the calling terminal and the called terminal, thereby controlling a smooth multimedia call between the calling terminal and the called terminal.

5 is a flowchart illustrating a method for providing a multimedia ringback tone service according to a second embodiment of the present invention.

In the method for providing a multimedia ringback tone service according to the second embodiment of the present invention, the H.223 level setting and the H.245 negotiation procedure are basically performed between the calling terminal and the called terminal and the IP equipment, and the calling terminal and the called terminal are performed. The H.223 level setting and H.245 negotiation procedure between the IP device and IP device is performed by using the information of each called terminal and calling terminal rather than using the information of IP equipment. It is characterized by. The details will be described below with reference to FIG. 4.

Since step 510 is performed in the same manner as the method according to the first embodiment of the present invention described above with reference to step 310 of FIG. 3, the description of step 510 will be omitted.

In step 520, the IP device performs the H.223 level setting and H.245 negotiation procedure with the calling terminal. In the H.223 level setting, the IP device sets a synchronization flag to be used for each level of H.223 composed of a total of four levels of 0, 1, 2, and 3 levels. Send continuously to the calling terminal. When the at least 16 flags received from the originating terminal and the transmitted flags are the same, the IP device completes the H.223 level setting. The level setting may be set while descending from a high level level to a low level level.

After performing the H.223 level setting and H.245 negotiation procedure of the IP device and the originating terminal, the MSC _T attempts to connect the relay call with the IP device. The MSC _T transmits an initial address message to the IP device, and performs the relay call connection by receiving an address complete message and an answer message (ANM) from the IP device.

When the relay call is connected, the IP device performs the H.223 level setting and the H.245 negotiation procedure with the called terminal. The H.223 level setting of the IP device and the called terminal may be performed in the same manner as the H.223 level setting of the IP device and the calling terminal. However, by setting the H.223 level of the IP device and the called terminal to a level set between the IP device and the calling terminal, it is possible to synchronize the level set between the both terminals and the IP device.

In addition, the H.245 negotiation procedure of the IP equipment and the called terminal may be performed using information of the calling terminal or the called terminal, for example, voice and video codec information to be used for a call. The H.223 level setting and H.245 negotiation procedure of the IP equipment and the called terminal may be performed via the MSC _T.

After performing the H.223 level setting and H.245 negotiation procedure with the calling terminal and the called terminal, the IP equipment refers to a predetermined subscriber database (e.g., HLR), Read the set multimedia data and play it back to the calling terminal. The multimedia data may be transmitted to the calling terminal via MSC _O and MSC _T.

In step 530, when an event such as the called party of the Hook off response, i.e., the called party accepts the call, the called terminal may attempt a call connection to the MSC _T, and the MSC _T sends a response message to the MSC _O The MSC _O attempts to make a call connection to the calling terminal, whereby a call connection between the calling terminal and the called terminal is connected.

When a call connection between the calling terminal and the called terminal is connected, the IP device stops playing and transmitting the multimedia data. At this time, the IP device determines whether an additional negotiation procedure between the calling terminal and the called terminal is required. The determination of the necessity of the additional negotiation procedure may be performed by comparing the audio and video codec information to be used for the call at the calling terminal and the called terminal and the H.223 level.

As a result of determining whether the additional negotiation procedure is necessary, when the additional negotiation procedure is not needed, the IP device requests switching control to MSC _T. Upon receiving the switching control request, the MSC _T closes the first channel formed between the IP equipment and the calling terminal and the second channel formed between the IP equipment and the called terminal and connects a channel between the calling terminal and the called terminal.

Thus, the calling terminal and the called terminal can provide a video call to the user through a call connected directly without passing through the IP equipment. Therefore, call delay time can be prevented in advance, and the occupancy of resources with additional calls can also be prevented.

In operation 530, if it is determined that the additional negotiation procedure is necessary, the IP equipment maintains the first channel and the second channel, and determines that the additional negotiation procedure is necessary. Transcoding can be performed. In this case, the method for providing a multimedia ringback tone service according to the second embodiment of the present invention may be performed in the method of providing multimedia ringback tone service according to the first embodiment described above with reference to FIG. The same method as can be applied.

6 is a flowchart illustrating a method for providing a multimedia ring back tone service according to a third embodiment of the present invention.

The method for providing a multimedia ringback tone service according to the third embodiment of the present invention basically performs an H.223 level setting and an H.245 negotiation procedure between the calling terminal and the called terminal and the IP equipment, and the calling terminal and the called terminal. The H.223 level setting and H.245 negotiation procedure between the IP device and IP device is performed by using the information of each called terminal and calling terminal rather than using the information of IP equipment. It is characterized by.

The third embodiment of the present invention is similar to the first embodiment of the present invention described above, but does not acquire the capability information of the calling terminal and the called terminal at the calling or called terminal, but is attached to or separately from IP equipment. There is a difference in that the IP device obtains by transmitting a query to the terminal information database. The details will be described below with reference to FIG. 6.

In step 610, when the calling terminal receives a call attempt request from the calling party, the calling terminal generates a predetermined call and transmits SETUP to the MSC _O. The initial address message, the MSC is a MSC _{O T:} a connection request by sending (IAM Initial Address Message) and, _T MSC receives the Alert for the call from the called terminal sends the SETUP to the called terminal. The MSC _T sends an address complete message (ACM) to the MSC _O , and the MSC _T alerts the originating terminal to confirm the call occurrence.

At this time, the MSC _T transmits an initial address message to the IP device and receives an address complete message and an answer message (ANM) from the IP device, thereby making a call between the calling terminal and the called terminal via the IP device. A ringback tone service call connection can be performed for an occurrence.

In addition, in step 610, when the MSC _O receives the SETUP from the calling terminal, after searching for a subscriber profile such as a home location register (HLR) using the calling or called terminal ID included in the SETUP, It may be determined whether the caller or called party is the subscriber of the multimedia ringback tone service.

As will be appreciated by those skilled in the art, determining whether a caller is a subscriber of a multimedia ringback tone service may be applied in a ringback tone providing service in a Ring to Me manner. Determining whether the subscriber is a multimedia ringback tone service may be applied to a ringback tone providing service of a ring to you method.

As a result of the determination, when the caller or the called party is a subscriber of the multimedia ringback tone service, a call is connected through an IP device, and a first channel is formed between the calling terminal and the IP device, and a second channel is connected between the IP device and the called terminal. Is formed.

The IP device transmits a query for the capability information of the originating terminal and the called terminal to a terminal information database (configuration included in the HLR in FIG. 6) operating separately or independently, and receives the terminal. The information database reads the performance information of each terminal by using IDs of the calling terminal and the called terminal (for example, a telephone number, an IP address, a SIP address, etc.), and provides this to the IP device as a response.

Next, the IP device performs H.223 level setting with each of the calling terminal and the called terminal. In this case, the IP device adjusts the level of two channels between the calling terminal and the IP device and between the called terminal and the IP device. That is, if the H.223 level setting of each channel is not the same, a channel having a high level set to a low level can be reset.

Hereinafter, since steps 620 and 630 are applied in the same manner as those described in the first embodiment, detailed description thereof will be omitted. In addition, the method according to the case where an additional negotiation procedure is required in step 630 may be applied in the same manner as described with reference to FIG. 4.

As described above, according to the method for providing a multimedia ringback tone service including the first, second and third embodiments of the present invention, the calling terminal and the called terminal are connected directly without passing through the IP equipment. Since the video call can be provided to the user through the call, the call delay time can be prevented in advance, and the additional call can also prevent the occupation of resources.

Hereinafter, a description of the configuration of an intelligent network equipment (IP equipment) for performing a method for providing a multimedia ringback tone service of the present invention will be described with reference to FIGS. 7 to 11.

7 is a block diagram illustrating a configuration of IP equipment for providing a multimedia ringback tone service according to the present invention.

IP equipment for providing a multimedia ringback tone service according to the present invention is a service control matching unit (SCIP), call signal matching unit (CSIP), operation management unit (OAMP), service control application unit (SCAP), basic call control unit (BCCP) ), Including a multimedia control unit. The multimedia controller includes a multimedia transmission controller (MTCP), a multimedia resource controller (MRCP), a multimedia file storage device, and a multimedia resource processor (MRPP).

The basic call control unit receives a call setup request transmitted from a mobile terminal from a mobile switching center (MSC) and requests a call connection to a called terminal through the MSC. The call establishment request includes caller or called party subscriber profile information regarding the multimedia ringback tone service.

The call signal matching unit performs an H.223 level setting and an H.245 negotiation procedure with the calling terminal and the called terminal through the basic call controller.

The multimedia controller reproduces and transmits predetermined multimedia data set by the caller or the called party to the calling terminal by referring to a predetermined subscriber database, and responds to the hook off response of the called terminal. Stops playing.

The characteristics and functions of the respective devices included in the IP equipment illustrated in FIG. 7 will be described in detail with reference to FIGS. 8 to 11.

8 is a block diagram showing the configuration of the call signal matching unit of the intelligent network equipment according to the present invention.

Call Signaling Interface Part (CSIP, Call Signaling Interface Part) of the IP equipment according to the present invention is a H323 matching module, SIP matching module, MGCP matching module, H248 / MEGACO matching module, R1 matching module, R2 matching module, PRI matching module, 3G-ISUP matching module, ISUP matching module, SIGTRAN matching module, and SS7 MTP1,2,3 matching module.

The call signal matching unit provides a call signal matching function necessary for interworking with another network.

The H323 signal matching module uses the ITU_T H.323 standard for H.323 messages received via TCP / IP from SSW, GK, and T-MG to interoperate with GK (Gate Keeper) and T-MG (Trunk Media Gateway). It provides a function to decode according to the H.323 message, and encodes an H.323 message according to the ITU_T H.323 standard and transmits it to GK, T-MG, etc. In addition, it performs call connection management and control functions for call signaling with GK and T-MG.

SIP signal matching module provides the function to decode SIP message received from GK and T-MG via TCP / IP or UDP / IP according to IETF SIP standard for interworking with SSW, T-MG, etc. Is encoded according to IETF SIP standard and transmitted to SSW, T-MG, etc. It also performs call connection management and control for call signaling with SSW, T-MG, and so on.

MGCP Signal Matching Module provides the function to decode MGCP messages received through TCP / IP or UDP / IP from SSW, MGC, CA (Call Agent) according to IETF MGCP specification for interworking with SSW, MGC, CA, etc. In addition, the MGCP message is encoded according to the IETF MGCP standard and transmitted to the SSW (Soft Switch), MGC (Media Gateway Controller), CA (Call Agent) and the like. In addition, it performs call connection management and control functions for call signaling with SSW, MGC, CA, and the like.

The MEGACO Signal Matching Module decodes MEGACO messages received via TCP / IP or UDP / IP from SSW, MGC, CA according to the IETF MEGACO and ITU-T H.248 specifications for interworking with SSWMGC, CA, etc. It also provides the function to encode MEGACO messages according to IETF MEGACO and ITU-T H.248 standards and send them to SSW, MGC, CA, etc. In addition, it performs call connection management and control functions for call signaling with SSW, MGC, CA, and the like.

The R2 signal matching module provides a function of decoding the R2 signaling message received through the E1 or T1 link from the exchange according to the ITU-T R2 specification in order to interwork with the existing PSTN exchange, and the R2 signaling message to the ITU-T R2. It provides the function of encoding according to the standard and transmitting it to the exchange side. In addition, it performs call connection management and control functions for call signaling with the exchange.

The PRI signal matching module provides the function to decode PRI signaling messages received through the E1 or T1 link from the exchange according to the ITU-T PRI specification in order to interoperate with existing PSTN or ISDN exchanges. It provides the function of encoding according to T PRI standard and transmitting to exchange. In addition, it performs call connection management and control functions for call signaling with the exchange.

The ISUP signal matching module provides the function of decoding the ISUP signaling message received through the E1 or T1 link from the exchange according to the ITU-T ISUP standard in order to interoperate with an existing PSTN or ISDN exchange. It provides the function of encoding according to T ISUP standard and transmitting to exchange. In addition, it performs call connection management and control functions for call signaling with the exchange.

The SS7 matching module is a base protocol interface for transmitting and receiving ISUP signaling messages and provides MTP1, MTP2, and MTP3 protocol functions.

SIGTRAN signal matching module provides the function to decode SIGTRAN signaling message received from SG through TCP / IP or UDP / IP or SCTCP / IP according to IETF SIGTRAN standard for interworking with SG, and IETF SIGTRAN to ISUP signaling message. It provides a function of encoding according to the standard and transmitting to the SG side. It also performs call connection management and control for call signaling with the SG.

The 3G-ISUP signal matching module provides a function of decoding a 3G-ISUP signaling message received from the MSC via an E1 or T1 link according to the 3GPP ISUP standard in order to interwork with the 3GPP MSC, and decodes the 3G-ISUP signaling message to the 3GPP ISUP. It provides the function of encoding according to the standard and transmitting it to the exchange side. In addition, it performs call connection management and control functions for call signaling with the exchange.

9 is a block diagram showing the configuration of the service control matching unit of the intelligent network equipment according to the present invention.

Service control interface part (SCIP, Service Control Interface Part) of the IP device according to the invention, CAP matching module, MAP matching module, WIN / WIN + (Wireless Intelligent Network) matching module, INAP (Intelligent Network Application Protocol) matching module, Session Initiation Protocol (SIP) matching module, VXML (Voice XML) matching module, PARLAY matching module, JAIN (JAVA Advanced Intelligent Network) matching module, AU matching module, call control XML (ccXML) matching module, SS7 Transaction Capability Application Part) / MTP1,2,3 (Message Transfer Part 1,2,3) matching module.

The service control matching unit provides a service control interworking function with equipment (eg, SCP, AS (Application Server), etc.) that performs service logic to provide multimedia services such as various voices or videos in a communication network. Accordingly, the IP device receives the service control message of the service control device and records, transmits, media mixed, DTMF collection, automatic speech recognition (ASR), and voice synthesis (TTS: Text-To) according to the message content. -Speech).

WIN matching module provides the function to decode WIN / WIN + signaling message received from SCP through SS7 network according to national / international standard for interworking with service control device (SCP) and decode WIN / WIN + signaling message to domestic / international standard. Provides the function of encoding according to international standard and transmitting to SCP. In addition, it performs service call connection session management and control for service control signaling with SCP.

The CAP matching module provides the function of decoding the CAP signaling message received from the SCP / HLR via the SS7 network according to the national / international standard for interworking with the SCP / HLR (Service Control Unit). Provides the ability to encode according to international standards and transmit to SCP / HLR. In addition, it performs service call connection session management and control functions for service control signaling with SCP / HLR.

MAP matching module provides the function to decode MAP signaling message received from SCP / HLR through SS7 network according to national / international standard in order to interwork with SCP / HLR (Service Control Unit), and decode MAP signaling message to domestic / international standard. Provides the function of encoding according to international standard and transmitting to SCP / HLR side. In addition, it performs service call connection session management and control functions for service control signaling with SCP / HLR.

INAP matching module provides the function to decode INAP signaling message received from SCP through SS7 network according to domestic / international standard for interworking with SCP (Service Control Unit), and to decode INAP signaling message according to national / international standard. Provides the function of encoding and sending to SCP. In addition, it performs service call connection session management and control for service control signaling with SCP.

SIP matching module provides the function to decode SIP signaling message received from AS through TCP / IP or UDP / IP according to national / international standard to interwork with application server device (AS), / Encode according to international standard and transmit to AS side. In addition, it performs service call connection session management and control for service control signaling with the AS.

Matching modules, such as Parlay, vXML, ccXML, JAIN, AU, etc., are used for signaling messages received via TCP / IP or UDP / IP from these devices to interoperate with application server devices (AS), Parlay GW, VXML server devices, etc. It provides a function to decode according to national / international standards, and provides a function to encode signaling messages according to national / international standards and transmit them to these devices. In addition, the service call connection session management and control function for service control signaling processing.

In addition, the service control matching unit includes a processing module such as SS7 MTP1 / 2/3, TCAP processing module, which is the basic protocol for SS7 network interworking, and vXML, ccXML, MGCP or MEGACO AU Package, and Tone control package to facilitate service provision. can do.

10 is a block diagram showing the configuration of the basic call controller of the intelligent network equipment according to the present invention.

The basic call control part (BCCP) of the intelligent network equipment according to the present invention provides a function for originating / terminating base call control processing. In addition, the basic call control unit creates and maintains a call processing DB called call context for each call. The basic call controller can be largely composed of an originating call control module, a terminating call control module, a number translation module, a call session connection information management module, and the like.

Originating / Terminating call control module receives signaling message received from H323, SIP, R2, PRI, ISUP, MGCP, MEGACO signal matching module of call signal matching unit, H323, SIP, R2, PRI It provides call control processing functions such as ISUP, MGCP, MEGACO, and IVR (Interactive Voice Response).

The originating call control module is a module that handles incoming calls from other call processing devices and provides incoming basic call session connection control and management. The terminating call control module It is a module that processes outgoing call when another call processing device is generated by the service control device or media server routing mechanism. It provides outgoing basic call session connection control and management function.

The call control module receives the signaling messages received from the H323, SIP, R2, PRI, ISUP, 3G-ISUP, MGCP, and MEGACO signal matching modules of the call signal matching unit, and receives the H323, SIP, R2, PRI, ISUP, MGCP, MEGACO , Call control processing functions such as IVR. That is, a module for handling incoming calls when another call processing device is generated, and provides incoming basic call session connection control and management functions.

The IVR call control module provides basic call session connection control and management to handle IVR call control when requested.

11 is a block diagram illustrating a configuration of a multimedia controller of an intelligent network device according to the present invention.

The multimedia control unit of the IP device according to the present invention includes a multimedia resource control unit (MRCP), a multimedia transmission control unit (MTCP, Multimedia Trnasport Control Part), and a multimedia resource processing unit (MRCP). It is composed.

The multimedia resource controller receives a control message from a call controller or a service controller and provides a function for providing a resource requested by the call controller or a service controller. In addition, in order to efficiently manage and control resources, the resource management system calls a minimum unit for processing an audio or video as a channel, and a bundle of channels is called a SLOT, so that channel hunting and routing for each silent unit are performed. ) Function. The multimedia resource controller may include a resource control module and a resource management module.

The multimedia transmission control unit provides hardware and software processing function modules for delivering actual media traffic. The multimedia transmission control unit includes an ATM or Ethernet based RTP / RTCP (Real-Time Protocol / Real-Time Control Protocol) over UDP / IP, TCP / IP transmission matching module, 3GPP circuit-multimedia based H324M transmission matching module, and 3GPP ATM And an H324M transmission matching module, a media transmission matching module with an ASR / TTS / HTTP server via TCP / IP or UDP / IP, and an E1 / T1 or STM-1 based transmission matching module.

The multimedia resource processor provides a function of source coding or source decoding a voice or a video. In addition, it provides functions such as transcoding, multimedia mixing, interception, transmission, and recording between multimedia codecs. The multimedia resource processing unit may include a multimedia transcoding module, a multimedia mixing module, a multimedia listening module, a multimedia play / recording (IVR) module, and a multimedia routing / forwarding / switching module.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

According to the present invention, in providing a multimedia ringback tone service through a 3G / WCDMA mobile communication network, a multimedia ringback tone service is provided to minimize call call delay time required for protocol calibration between a calling terminal and a called terminal. The technical effect can be achieved.

In addition, according to the present invention, in providing an intelligent network based multimedia ringback tone service, it is possible to provide a multimedia ringback tone service that prevents additional resource occupancy caused by protocol matching between a calling terminal and a called terminal. .

In addition, according to the present invention, by providing the protocol matching between the calling terminal and the called terminal in the IP device when providing the multimedia ringback tone service, it is possible to minimize the network resource occupancy.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (8)

In the operation method of an intelligent network equipment providing a multimedia ringback tone service through a communication network, Receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-The call setup request includes subscriber profile information on a multimedia ringback tone service of a caller or a called party, and the mobile switching center Includes the calling mobile switching center or the called mobile switching center; Requesting a call connection to the called terminal through the MSC and performing an H.223 level setting with the calling terminal; Performing an H.245 negotiation procedure with the calling terminal; Playing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal by referring to a predetermined subscriber database; Performing an H.223 level setting and an H.245 negotiation procedure with the called terminal, wherein the negotiation procedure is performed using information of the calling terminal; And Stopping playback of the multimedia data in response to a hook off response of the called terminal; Method of operation of the intelligent network equipment comprising a. In the operation method of an intelligent network equipment providing a multimedia ringback tone service through a communication network, Receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-The call setup request includes subscriber profile information on a multimedia ringback tone service of a caller or a called party, and the mobile switching center Includes the calling mobile switching center or the called mobile switching center; Requesting a call connection to the called terminal through the MSC; Performing an H.223 level setting with the calling terminal and the called terminal, respectively; Performing an H.245 negotiation procedure with the calling terminal and the called terminal, respectively-the negotiation procedure with the calling terminal is performed by using the information of the called terminal and negotiation with the called terminal The procedure is performed using the information of the calling terminal; Playing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal by referring to a predetermined subscriber database; And Stopping playback of the multimedia data in response to a hook off response of the called terminal; Method of operation of the intelligent network equipment comprising a. In the operation method of an intelligent network equipment providing a multimedia ringback tone service through a communication network, Receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-The call setup request includes subscriber profile information on a multimedia ringback tone service of a caller or a called party, and the mobile switching center Includes the calling mobile switching center or the called mobile switching center; Requesting a call connection to the called terminal through the MSC; Transmitting a query for capability information of the calling terminal and the called terminal to a predetermined terminal information database, and receiving a response to the query from the terminal information database; Performing an H.223 level setting and an H.245 negotiation procedure with the calling terminal, wherein the negotiation procedure is performed using information of the called terminal; Playing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal by referring to a predetermined subscriber database; Performing an H.223 level setting and an H.245 negotiation procedure with the called terminal, wherein the negotiation procedure is performed using information of the calling terminal; And Stopping playback of the multimedia data in response to a hook off response of the called terminal; Method of operation of the intelligent network equipment comprising a. The method according to any one of claims 1 to 3, The MSC releases a channel allocated to the IP device in response to the interruption of multimedia data playback of the intelligent network device, and switches the channel to be connected between the calling terminal and the called terminal. The method according to any one of claims 1 to 3, The step of performing the negotiation procedure, Determining whether further negotiation procedures are required as a result of the negotiation; And Transcoding the multimedia data transmitted from the calling terminal and the called terminal when it is determined that an additional negotiation procedure is necessary. Including, If the MSC determines that an additional negotiation procedure is necessary, the MSC controls to maintain the first channel between the intelligent network equipment and the calling terminal and the second channel between the intelligent network equipment and the called terminal. How it works. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 1 to 3. In the intelligent network equipment providing multimedia ringback tone service through a communication network, Receiving a call setup request transmitted from a mobile terminal from a mobile switching center (MSC)-The call setup request includes the subscriber profile information of the caller or the called party about the multimedia ringback tone service, and the mobile switching center A calling party mobile switching center or a called party mobile switching center; A call signal matching unit for performing an H.223 level setting and an H.245 negotiation procedure with the calling terminal and the called terminal through the basic call controller; And A multimedia control unit for reproducing and transmitting predetermined multimedia data set by the caller or the called party to the calling terminal by referring to a predetermined subscriber database. Including, The multimedia control unit intelligent network equipment, characterized in that to stop the reproduction of the multimedia data in response to the hook off (hook off) response of the called terminal. The method of claim 7, wherein The call signal matching unit transmits a query for performance information of the calling terminal and the called terminal to a predetermined terminal information database, and receives a response to the query from the terminal information database.

Images