KR20070084755A - Method, system and apparatus for providing multimedia ring back tone alternative service centered originating by using intelligent network - Google Patents

Abstract

A sending-centered multimedia RBT(Ring Back Tone) alternative sound service method using an intelligent network, a system, and a device are provided to offer an RBT sound source by adaptively changing CODECs(Coders Decoders) by dividing an RBT alternative sound service section from a voice call service section, thereby promoting improvement of QoS(Quality of Service). A sending MSC(Mobile Switching Center)(140) receives a request for a call from a sending mobile communication terminal(110)(S202). An SCP(Service Control Point)(170) receives a request for processing an RBT alternative sound service from the sending MSC(140)(S204-S218). The SCP(170) receives function description information of the sending terminal(110) from the sending MSC(140), and confirms whether the sending terminal(110) is capable of reproducing an audio CODEC sound source encoded by an audio CODEC(S220-S224). If so, the SCP(170) controls the sending MSC(140) to perform call connection with a sound source supply device(180)(S228). The device(180) requests the sending MSC(140) to set a bypass mode(S230,S232). The sending MSC(140) sets the bypass mode(S234,S236). The device(180) sends the audio CODEC sound source to the sending terminal(110)(S238).

Description

Method, System and Apparatus for Providing Call-Oriented Multimedia Ringback Tone Alternative Sound Service Using Intelligent Network {Method, System and Apparatus for Providing Multimedia Ring Back Tone Alternative Service Centered Originating by Using Intelligent Network}

1 is a block diagram schematically illustrating a system for providing a call-centered multimedia ringback tone substitute sound service using an intelligent network according to a preferred embodiment of the present invention;

2A and 2B are flowcharts illustrating a first half and a second half of a method for providing a call-centered multimedia ringback tone substitute sound service using an intelligent network according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: outgoing mobile communication terminal 112: incoming mobile communication terminal

120: mobile communication network 130: outgoing wireless base station

132: terminating base station 140: originating mobile communication switching center

142: terminating mobile communication switching center 150: common line signaling network No. 7

160: HLR 170: SCP

180: sound source providing unit 190: sound source providing unit

192: Internet 194: sound source control server

196: Subscriber DB 198: Web Server

The present invention relates to a method, a system and an apparatus for providing a call-centered multimedia ringback tone substitute sound service using an intelligent network. More specifically, the ringback tone replacement sound service section and the voice call section are separated to provide an improved quality replacement sound by adaptively applying various audio codecs according to the type of service, respectively. In order to provide ringback tone replacement sound service to mobile communication terminal, the capability of mobile communication terminal in specific device of intelligent network centering on originating exchange without needing to modify or change multiple devices of mobile communication network individually. The present invention relates to a method, a system, and an apparatus for providing a sound source encoded using an audio codec as a multimedia ringback tone replacement sound service by controlling other devices in consideration of the type of ringback tone replacement sound service.

BACKGROUND With the rapid development of computer, electronic and communication technologies, various wireless communication services using wireless communication networks have been provided. The most basic wireless communication service is a voice call service that allows wireless communication between mobile subscribers using a mobile communication terminal regardless of time and place. In recent years, a wireless data service has emerged, which allows a mobile communication subscriber to perform data communication using a wireless communication network while the mobile subscriber is moving.

Accordingly, the mobile subscribers can freely move anywhere at any time by using the voice call service and make voice calls with the other party, as well as various information necessary for life using the wireless data service, for example, news, weather, sports, and securities. , Exchange rates, traffic information, etc. can be provided while moving in a variety of forms, such as text, voice, images.

Recently, a so-called ringback tone replacement sound service has been developed, which listens to the caller's mobile terminal that calls various kinds of music, voice, etc. designated by the called party or caller. have. This ringback tone replacement tone service is a service that provides a ringtone designated by the called party or the caller to the caller's mobile terminal, and is a modern voice instead of a simple sound such as "following", which is normally generated when a call is connected. It is a service that can be used as a substitute for ringback tone as well as the voice of the called party or caller, such as bird sound and water sound.

As the ringback tone replacement sound service is provided, the caller can feel auditory satisfaction by listening to the sounds of various sound sources instead of listening to a uniform mechanical ringback tone.

The ring back tone replacement tone service is typically provided to a mobile communication terminal in a mobile communication network implemented by a mobile communication system such as a code division multiple access (CDMA) 2000 system and a wideband CDMA (WCDMA) system.

In the mobile communication network, the enhanced variable rate codec (EVRC) (hereinafter referred to as 'EVRC') is generally used to provide the above-mentioned ringback tone replacement sound service. A variable rate voice codec, such as an adaptive multi rate codec (AMR), is called "AMR". The speech codec is designed for maximizing channel efficiency to detect the sounding section and the silent section, generate the appropriate codebook, and provide the voice service at the minimum bit rate through mapping.

However, the voice codecs of variable bit rates such as EVRC and AMR apply the same logic to sound sources such as music with little silence section, and encode sound sources using the provided voice code book (Code Book). Encoding. On the other hand, if a sound source such as music is mapped to a voice codebook and encoded, the sound source is encoded according to a human voice pattern, thereby ignoring various patterns appearing in the music during encoding, and as a result, a coding error occurs. Degrades the quality. Therefore, the above-described variable code rate voice codec is not suitable for encoding an audio source such as music.

In order to solve the problem of the voice codec of the variable bit rate, a sound source correction scheme has been developed and widely used. That is, a content provider (CP) that provides a sound source extracts a sound source from a high-quality music such as a compact disk (CD) and modifies and encodes the sound source to be suitable for a voice codec such as EVRC. Minimize damage to sound sources.

This method of sound source correction is dependent on the preprocessing processing considering the characteristics of the EVRC codec or the manual work of the sound engineer. However, these operations can supplement the quality of the ringback tone substitute sound service through the EVRC codec to the level of the voice quality, but there is a problem in that the quality of the ringback tone substitute sound service is improved to high quality.

On the other hand, it is most effective to provide a ringback tone replacement sound by encoding an audio source and providing ringback tone replacement sound using an audio codec. However, there are some technical issues that must be preceded for this.

As a technical problem, first, an audio codec suitable for a voice channel of a mobile communication terminal should be modified and applied. That is, for example, a voice channel of a CDMA 2000 system uses an 8 kbps voice channel, and a GSM (Global System for Mobile Communications) system uses a 12.3 kbps voice channel. Adapted to the transmission rate, it should be possible to provide an improved quality ringback tone replacement sound service.

Second, the service section is divided into ringback tone replacement sound service section and voice call section, and the audio codec is applied in ringback tone replacement sound service section, and the voice codec is applied in voice call section, and the sound source is transmitted to the mobile communication terminal. The terminal should be able to decode and play the sound source with the appropriate codec. Third, a sound source suitable for an audio codec applied in a mobile communication terminal and a mobile communication network should be produced and provided.

In summary, in order to provide a high quality ringback tone replacement sound service, it is essential to apply an audio codec and a voice codec by appropriately changing the sound codec in each section by dividing the ringback tone replacement sound service section and the voice call section. That is, it is necessary to provide a ringback tone replacement sound service by selecting a codec to be adaptively applied according to the type of service such as a ringback tone replacement sound service or a voice call service to a mobile communication network and a mobile communication terminal. However, until now, no technology has been developed to provide ringback tone replacement service in this manner.

In addition, even if this technical problem is solved, if it is necessary to modify or change each device in the mobile communication network, for example, a switch, a base station, etc., a lot of time, effort, cost, etc. to provide a new ringback tone replacement sound service As a result of this consumption, the cost of providing a service increases, which affects the quality of service and makes development difficult.

In addition, in providing a ringback tone substitute tone service, there is a method of coordinating a ringback tone substitute tone service at a destination exchange and a method of coordinating a ringback tone alternative tone service at an originating exchange. When coordinating the replacement sound service, it is also necessary to consider a method of minimizing modification changes of existing equipment as described above.

In order to solve this problem, the present invention, by applying a variety of audio codec adaptively according to the type of service to provide a replacement quality of the improved quality, ringback tone replacement sound service interval and voice call interval is separated respectively In providing ringback tone replacement sound service to mobile communication terminal by applying audio codec and voice codec, it is necessary to designate intelligent network centering on source exchanger without having to modify or change many devices individually. A method, system, and apparatus for providing a sound source encoded using an audio codec as a multimedia ringback tone replacement sound service by controlling other devices in consideration of the capability of a mobile communication terminal and the type of ringback tone replacement sound service in the device. The purpose is to provide.

In order to achieve the above object, the present invention provides an originating radio base station, an incoming radio base station, an outgoing mobile communication exchange station, an incoming mobile communication exchange station, a home location register (HLR), a service control point (SCP). A method for providing a ringback tone replacement sound service to a calling mobile terminal requesting a call to a called mobile terminal in a mobile communication network including a Service Control Point (hereinafter referred to as 'SCP') and a sound source providing apparatus, (a Receiving a call request from an originating mobile communication terminal at an originating mobile communication switching center; (b) receiving a request from the originating mobile switching center to process a ringback tone replacement tone in the SCP; (c) receiving, from the calling mobile telecommunication switching center, function specification information of the calling mobile telecommunication terminal in the SCP to determine whether the calling mobile telecommunication terminal can play an audio codec sound source that is a ringback tone substitute sound encoded with an audio codec; (d) if the originating mobile communication terminal can play the audio codec sound source as a result of checking in step (c) in the SCP, controlling the originating mobile communication switching center to perform a call connection with the sound source providing apparatus; (e) requesting, from the sound source providing apparatus, to set the bypass mode to the calling mobile communication switching center; (f) setting a bypass mode at the originating mobile telecommunication switching center; And (g) transmitting the audio codec sound source from the sound source providing device to the calling mobile communication terminal.

In addition, according to another object of the present invention, in the system for providing a ringback tone replacement sound service to the outgoing mobile communication terminal requesting a call to the incoming mobile communication terminal, the location information about the outgoing mobile terminal and the incoming mobile communication terminal; A home location register (HLR: home location register (HLR)) for storing capability information of a terminal, information on whether to subscribe to a ringback tone replacement tone service, and routing information; A sound source providing apparatus for storing a plurality of sound sources including an audio codec sound source encoded with an audio codec and providing the same to a calling mobile communication terminal; An outgoing wireless base station for receiving and transmitting a call from an outgoing mobile communication terminal and setting a bypass mode to deliver an audio codec sound source to the outgoing mobile communication terminal in a bypass mode; Requesting the call to check whether the caller is subscribed to the ringback tone replacement service, request processing of the ringback tone replacement service, collecting, generating and forwarding function specification information of the outgoing mobile terminal, and setting the bypass mode. An outgoing mobile communication switching center configured to control an outgoing radio base station to set a bypass mode in response to the request, perform a call setup with a sound source providing apparatus, receive an audio codec sound source, and transmit the outgoing radio base station to an outgoing mobile communication terminal; And receiving a request for processing of a ringback tone replacement sound service from an outgoing mobile telecommunication switching center, receiving function specification information, checking whether the outgoing mobile communication terminal can play an audio codec sound source, and calling the outgoing mobile telecommunication switching center to the sound source providing apparatus. Call center-oriented multimedia ringback tone replacement sound service using an intelligent network, characterized in that it comprises a service control point (SCP: Service Control Point, hereinafter referred to as 'SCP') requesting to connect to, and requests the setting of the bypass mode. Provide a provision system.

According to yet another object of the present invention, an apparatus for providing a ringback tone replacement sound service using an intelligent network in a mobile communication network providing a ringback tone replacement sound service to an outgoing mobile communication terminal requesting a call to an incoming mobile communication terminal A ringback tone is received from a calling mobile telecommunication switching center in charge of an outgoing mobile terminal and receives function specification information for the calling mobile terminal, and the calling mobile terminal is encoded with an audio codec. Checks whether the audio codec sound source, which is a substitute sound source, can be played and requests the setting of the bypass mode from the calling mobile communication exchange, and controls the mobile network to transmit the audio codec sound source to the calling mobile terminal in bypass mode. Service Control Point (SCP) It provides a call-centered multimedia ringback tone replacement sound service providing apparatus using an intelligent network characterized in that it comprises a).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In the following description of the present invention, a preferred embodiment of the present invention will be described assuming that a mobile communication system implementing a mobile communication network is a code division multiple access (CDMA) 2000 system. However, this assumption is for convenience of description, and the technical idea of the present invention is not limited to this assumption and may be applied to other synchronous mobile communication systems and other asynchronous systems.

FIG. 1 is a block diagram schematically illustrating a system for providing a call-centered multimedia ringback tone substitute sound service using an intelligent network according to an exemplary embodiment of the present invention.

A system for providing a ringback tone substitute sound service based on an outgoing call center using an intelligent network according to a preferred embodiment of the present invention includes an outgoing mobile communication terminal 110, an incoming mobile communication terminal 112, a mobile communication network 120, and a sound source providing unit 190. It is configured to include).

The outgoing mobile terminal 110 and the terminating mobile communication terminal 112 use a mobile communication network 120 to perform voice calls with each mobile communication terminal or with a general landline telephone through a public switched telephone network (not shown). Communication terminal. Here, the mobile communication terminal is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC (GSM), Global System for Mobile (GSM) phone, Wideband CDMA (WCDMA) phone, CDMA-2000 phone, Mobile Broadband System (MBS) phone and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

According to a preferred embodiment of the present invention, the outgoing mobile terminal 110 requests a voice call to the called party's mobile terminal 112 using the mobile communication network 120 according to the caller's key manipulation, and the caller or called party In the case of subscribing to the ringback tone replacement sound service, the mobile communication terminal receives and outputs the ringback tone replacement sound from the mobile communication network 120.

In addition, the outgoing mobile communication terminal 110 according to the preferred embodiment of the present invention requests a voice call to the incoming mobile communication terminal 112 using the mobile communication network 120 and then replaces the ringback tone from the mobile communication network 120. In receiving, when the sound source of the ringback tone replacement sound is encoded with the audio codec, when receiving a signaling message requesting to change to the audio codec, the default codec is changed to the audio codec and received from the mobile communication network 120. Decode and play a sound source with an audio codec.

In addition, when the outgoing mobile communication terminal 110 according to the preferred embodiment of the present invention receives a signaling message requesting the mobile communication network 120 to change the voice codec, the default codec is changed to the voice codec and the changed voice is changed. Make a voice call with the codec.

Incoming mobile communication terminal 112 according to a preferred embodiment of the present invention is a mobile communication terminal that receives a call request from the outgoing mobile communication terminal 110 using the mobile communication network 120, to the paging request of the mobile communication network 120 Respond accordingly.

The mobile communication network 120 according to the preferred embodiment of the present invention includes an outgoing radio base station 130, an incoming radio base station 132, an outgoing mobile communication exchange station 140, a destination mobile communication exchange station 142, and a common line signaling network (CCSN). : Common Channel Signaling Network (No.7) 150, Home Location Register (HLR: Home Location Register, hereinafter referred to as 'HLR', 160), Service Control Point (SCP: referred to as 'SCP', 170) and a sound source providing apparatus 180, a communication network providing voice call service and ringback tone replacement sound service to the outgoing mobile communication terminal 110 and the incoming mobile communication terminal 112.

Here, the source radio base station 130 and the destination radio base station 132 are each a radio base station of a mobile communication network 120 including a base station transmission system (BTS) and a base station controller (BSC).

When the outgoing wireless base station 130 according to the preferred embodiment of the present invention receives a call request from the outgoing mobile communication terminal 110, it connects a call path between the outgoing mobile communication terminal 110 and the outgoing mobile communication switching center 140. When the mobile communication switching center 140 is requested to switch to the bypass mode, the audio codec is a ringback tone replacement sound source encoded by the audio codec received from the mobile communication switching station 140 by switching to the bypass mode. The sound source is relayed as it is to the outgoing mobile communication terminal 110 without going through a vocoder.

In addition, when the originating radio base station 130 according to the preferred embodiment of the present invention is requested to release the bypass mode from the originating mobile communication switching center 140, the bypass mode is released and a voice call for a voice call is performed using a vocoder. It vocodes and relays to the outgoing mobile terminal 110.

The outgoing mobile communication switching center 140 and the incoming mobile communication switching center 142 perform basic and additional service processing, incoming and outgoing call processing of subscribers, location registration procedure and handoff procedure processing, interworking functions with other networks, and the like. As the mobile communication switching station of 120, each of the calling mobile terminal 110, the calling party, the called party, the information of the called party, and the location of each mobile communication terminal using the HLR 160, respectively. Identify information and status information.

When the outgoing mobile communication exchange station 140 according to the preferred embodiment of the present invention receives a call call requesting a voice call from the outgoing mobile communication terminal 110, the incoming mobile communication exchange station 142 is connected using the HLR 160. SCP 170 recognizes and transmits an initial address message including the telephone number of the outgoing mobile communication terminal 110 to the destination mobile communication switching center 142 to perform call setup, and if the caller is subscribed to the ringback tone replacement tone service, SCP (170). Requests service processing and transmits function specification information to SCP (170), information about the ability to determine whether the calling mobile communication terminal 110 can receive the multimedia ringback tone replacement sound service, and then the sound source. When a call connection to the providing device 180 is requested, call setup is performed with the sound source providing device 180.

In addition, the outgoing mobile communication switching center 140 according to the preferred embodiment of the present invention receives a request to set the bypass mode from the sound source providing apparatus 180 controls to switch the outgoing radio base station 130 to the bypass mode, The signaling message is transmitted to the mobile communication terminal 110 to control the calling mobile communication terminal 110 to switch the audio codec to the default codec.

In addition, the outgoing mobile telecommunication switching center 140 according to a preferred embodiment of the present invention receives the audio codec source, which is a ringback tone replacement sound source encoded by the audio codec from the sound source providing device 180 and through the outgoing wireless base station 130 Send to the outgoing mobile communication terminal (110).

In addition, when the outgoing mobile communication switching center 140 according to the preferred embodiment of the present invention receives a response message indicating that the incoming mobile communication terminal 112 has responded from the incoming mobile communication switching center 142, it processes the service with the SCP 170. Request, release the call with the sound source providing device 180 is requested to release the call with the sound source providing device 180, and controls the originating radio base station 130 to release the setting of the bypass mode, After transmitting the signaling message to the mobile communication terminal 110 to control the voice codec to be converted to the default codec, and then the alarm information indicating that the incoming mobile communication terminal 110 has responded, and the incoming mobile communication terminal 110 and the incoming call The voice call between the mobile communication terminals 112 is relayed.

The terminating mobile telecommunication switching center 142 according to the preferred embodiment of the present invention, after performing call setup with the outgoing mobile telecommunication switching center 140, is requested to continue the call progress from the SCP 170, paging the terminating mobile communication terminal 112. That is, if a call is made and a response is received from the terminating mobile communication terminal 112, the calling mobile communication switching center 140 is notified of the response, and then a voice call between the originating mobile communication terminal 110 and the terminating mobile communication terminal 112 is made. Relay.

The common line signal network No. 7 150 refers to a network composed of signal points and signal links to provide a common line signaling system standardized by the ITU-T No. 7 scheme. Here, the common line signaling method refers to a signaling method that separates signal information and network management information into voice and data and transmits them to a separate channel commonly used for signal transmission.

The HLR 160 is a database that stores service profiles related to subscriber information of mobile subscribers. The HLR 160 performs a function such as registration recognition, registration deletion, and location checking of each mobile communication terminal, and uses each mobile communication terminal. Device information providing device 180 including information on the service type, such as a subscriber's telephone number, a mobile identification number (MIN), an electronic serial number (ESN), and ringback tone replacement tone service Information for routing, capability information on the mobile communication terminal, and the like are stored.

SCP 170 is a system that performs a core function for providing various additional services using an intelligent network, and is composed of a program for controlling additional services and a data system in which data of a service subscriber is concentrated.

SCP 170 according to a preferred embodiment of the present invention is a type of ringback tone replacement sound source set by a caller or a receiver, that is, an audio codec sound source that is encoded using an audio codec, or is encoded using a voice codec. Information on whether a substitute sound source is a sound source, information on a file of a ringback tone replacement sound source, and the like, and performs an eligibility check and translation on an additional service received from an outgoing mobile communication switching center 140.

That is, when the SCP 170 according to the preferred embodiment of the present invention receives a request for the processing of the ringback tone replacement sound service from the originating mobile communication switching center 140, the caller grasps the type of the ringback tone replacement sound source set by the caller and then the sound source. Requesting an initial call connection while transmitting routing information for the providing device 180.

In addition, when the SCP 170 receives the function specification information from the outgoing mobile communication switching center 140, it checks whether the outgoing mobile communication terminal 110 can play the audio codec sound source and sends the outgoing mobile communication to the sound source providing device 180. The terminal 110 transmits information on whether the audio codec sound source can be reproduced, requests to acquire a resource (TLDN: Temporary Local Directory Number), receives routing information from the sound source providing apparatus 180, and notifies that the resource is obtained. When receiving, the originating mobile communication switching center 140 requests the call providing device 180 to perform a call connection. At this time, SCP 170 requests the originating mobile communication switching center 140 to set the bypass mode.

In addition, the SCP 170 according to a preferred embodiment of the present invention requests and transmits the information on the ringback tone replacement sound set by the caller from the sound source providing apparatus 180, that is, sound source information. That is, the SCP 170 answers the sound source information, that is, the sound source code query, from the sound source providing apparatus 180 in conjunction with the sound source providing control server 190 and the subscriber DB 196 through the Internet 192.

In addition, the SCP 170 according to the preferred embodiment of the present invention requests the incoming mobile communication switching center 142 to set a response trigger detection point, and from the outgoing mobile communication switching center 140 to terminate the ringback tone replacement sound service. When the service processing is requested, the originating mobile communication switching center 140 requests the call setting with the sound source providing apparatus 180 to be released.

The sound source providing device 180 is an IP for an intelligent network that stores a ringback tone replacement sound source. When the ringback tone replacement sound source is requested, the sound source providing device 180 requests a sound source authentication to the sound source providing control server 194, and the authentication of the sound source is successful. The switch 140 transmits the ringback tone substitute sound source. In addition, the sound source providing apparatus 180 stores and manages a ringback tone replacement sound source when the ringback tone replacement sound source is transmitted from the web server 198.

The sound source providing apparatus 180 according to the preferred embodiment of the present invention performs call setup with the outgoing mobile communication switching center 140 to the SCP 170 when receiving a ringback tone replacement sound source set by the caller, that is, an audio codec sound source. After receiving and receiving the sound source information for the sound source, the audio codec sound source is searched and transmitted to the outgoing mobile communication switching center 140.

In addition, when the sound source providing apparatus 180 according to the preferred embodiment of the present invention receives information on whether the originating mobile communication terminal 110 can play the audio codec sound source from the SCP 170 and is requested to secure resources, The source mobile communication terminal 110 secures resources for transmitting the audio codec sound source and transmits its routing information to the SCP 170.

The sound source providing unit 190 generates and receives a ringback tone replacement sound source including the Internet 192, a sound source providing control server 194, a subscriber DB 196, and a web server 198 to an audio codec or a voice codec. The encoding is provided to the sound source providing apparatus 180.

The Internet 192 is a service that exists in the TCP / IP protocol and its upper layers: Hypertext Transfer Protocol (HTTP), Telnet, File Transfer Protocol (FTP), Domain Name Server (DNS), and Simple Mail Transfer Protocol (SMTP). , A global open computer network architecture that provides the Simple Network Management Protocol (SNTP), Network File Service (NFS) and Network Information Service (NIS).

The sound source providing control server 194 is a server controlling the provision of the ringback tone replacement sound service, and controls the sound source providing apparatus 180 and the subscriber database (DB), and the incoming mobile communication terminal 110 and the incoming mobile communication. Sound source authentication is performed using information on the caller and the called party of the terminal 112, information on the call request time, and the like.

The subscriber DB 196 is a database that stores and manages information of subscribers subscribed to the ringback tone replacement tone service, and provides subscriber information necessary to perform sound source authentication in the sound source providing control server 194.

The web server 198 is connected to the sound source providing device 180 and the sound source providing control server 194 through the Internet 192 to add a ringback tone replacement sound to the sound source providing device 180, and the sound source providing control server ( 194), a user interface for setting and changing a sound source code corresponding to information on a sound source specification, that is, information on a caller, a group of callers, a calling time, and a sound source specification, to a user terminal such as a computer or a mobile communication terminal. to provide. To this end, the web server 198 provides a web page or a swap page to a user terminal or a mobile communication terminal.

2A and 2B are flowcharts illustrating a first half and a second half of a method for providing a call-centered multimedia ringback tone substitute sound service using an intelligent network according to a preferred embodiment of the present invention.

Hereinafter, a description will be given of a method of providing a call center-based multimedia ringback tone replacement sound service providing system using an intelligent network according to a preferred embodiment of the present invention described with reference to FIG. 1.

When the caller enters the telephone number of the called mobile communication terminal 110 to select a call by operating the calling mobile communication terminal 110 to perform a voice call with the called party, the calling mobile communication terminal 110 is the calling wireless base station ( In step S202, the voice call is sent to the calling mobile communication switching center 140.

The outgoing mobile communication switching center 140 receiving the voice call requests the location information of the incoming mobile communication terminal 112 by transmitting the telephone number of the incoming mobile communication terminal 112 to the HLR 160 (S204). The HLR 170 queries the location of the terminating mobile communication terminal 112 to recognize the terminating mobile communication switching center 142 and requests routing information from the terminating mobile communication switching center 142 (S206). The destination mobile communication switching center 142 transmits its routing information to the HLR 160 and responds (S208), and the HLR 160 transmits the received routing information to the calling mobile communication switching center 140 to receive the mobile terminal. In response to the location information request of 112 (S210).

The originating mobile switching center 140, which has obtained the location information of the terminating mobile communication terminal 112, that is, the routing information for the terminating mobile communications switching center 142, may make an outgoing movement in order to attempt a call connection with the terminating mobile communications switching center 142. The initial address message including the telephone number of the communication terminal 110 is transmitted to the destination mobile communication switching center 142 (S212), and a call establishment request is made.

The outgoing mobile switching center 140 requesting the call setup checks whether or not the caller is subscribed to the ringback tone replacement tone service using the HLR 160 (S214). S130 transmits to the outgoing mobile communication terminal 110 (S216), if subscribed to the service request to the SCP (170) to provide a ringback tone replacement sound service (S218).

SCP 170, which is requested to process the service from the outgoing mobile telecommunication switching center 140, checks whether the ringback tone replacement sound source set by the caller is an audio codec sound source encoded using an audio codec, thereby providing a multimedia ringback tone replacement sound service. Check whether or not the request is requested to request the preparation of the initial call connection to the outgoing mobile communication switching center 140 (S220).

The outgoing mobile switching center 140 that is requested to prepare for the initial call connection can check information on the capability of the outgoing mobile terminal 110, that is, whether the outgoing mobile terminal 110 can play an audio codec sound source. The function specification information, which is information, is collected and transmitted to the SCP 170 (S222).

Upon receiving the functional specification information, the SCP 170 analyzes the functional specification information to determine whether the calling mobile communication terminal 110 can reproduce the audio codec sound source (S224), and if it cannot reproduce, replace the conventional ringback tone. It provides a sound service to the calling mobile terminal 110 (S226), if it can be played and transmits information to the sound source providing device 180 whether the calling mobile terminal 110 can play the audio codec sound source. , Request to secure the resource (S228). The sound source providing device 180 that has been requested to secure the resource secures a resource for transmitting an audio codec to the calling mobile terminal 110, transmits its routing information to the SCP 170, and responds that the resource is secured. (S230). Here, since the procedure for providing a conventional ringback tone replacement sound service as in step S226 is a well-known technique, a detailed description thereof will be omitted.

In response to the secured resource, the SCP 170 transmits routing information of the sound source providing apparatus 180 to the calling mobile communication switching center 140 and requests a call connection to the sound source providing apparatus 180 (S232).

The originating mobile telecommunication switching center 140, which has been requested to connect to the sound source providing apparatus 180, transmits an initial address message in order to attempt a call connection with the sound source providing apparatus 180 (S234), and from the sound source providing apparatus 180. The call connection procedure is completed by receiving the address termination message (S236). At this time, the sound source providing apparatus 180 requests the originating mobile communication switching center 140 to set the bypass mode.

Although not shown, the outgoing mobile switching center 140, which is requested to set to the bypass mode, requests the outgoing radio base station 130 to set to the bypass mode, and when the audio codec source is delivered, the bypass does not go through the vocoder. Request to transfer to the calling mobile terminal 110 in the pass mode. In addition, the outgoing mobile communication switching center 140 transmits a signaling message (eg, a data burst message) to the outgoing mobile communication terminal 110, thereby causing the outgoing mobile communication terminal 110 to transmit a basic message. Control to switch the codec to the audio codec (S238). The originating mobile communication terminal 110, which has been requested to switch the basic codec, converts the basic codec into an audio codec (S240).

On the other hand, the sound source providing apparatus 180 that has performed call setup with the outgoing mobile communication switching center 140 requests the sound source information, which is information on the ringback tone replacement sound source set by the caller, that is, the audio codec sound source, to the SCP 170. (S242), SCP (170) retrieves the corresponding sound source information and transmits to the sound source providing device 180 and responds (S244).

Receiving the sound source information, the sound source providing apparatus 180 searches for an audio codec sound source designated in the sound source information from among the stored plurality of sound sources and transmits the sound to the outgoing mobile switching center 140, and the outgoing mobile switching center 140 transmits the outgoing wireless base station. The transmission is sent to the outgoing mobile terminal 110 through the 130 (S246). The outgoing mobile communication terminal 110 receiving the audio codec sound source can play the audio codec sound source with the audio codec switched in step S240 to reproduce a high quality ringback tone replacement sound (S248).

Meanwhile, SCP 170, which has transmitted the sound source information to the sound source providing apparatus 180 in step S244, requests the incoming mobile communication switching center 142 to set a response trigger detection point (S250), and requests to continue the call progress (S250). S252). The terminating mobile communication switching center 142 paging the terminating mobile communication terminal 112 to notify that there is a call request from the originating mobile communication terminal 110 (S254), and the terminating mobile communication terminal 112 rings according to the paging request. After notifying the called party that there is a call request in various ways such as vibration, when the called party recognizes it and presses a specific key button, an incoming call occurs, and a response to paging is transmitted to the called mobile communication switching center 142 (S256). ).

Receiving a response to paging, the terminating mobile communication switching center 142 transmits a response message indicating that there is a response from the terminating mobile communication terminal 112 to the calling mobile communication switching station 140 (S258) to complete the call setup. .

Receiving the response message, the outgoing mobile telecommunication switching center 140 requests the service processing for notifying the end of the ringback tone replacement sound service to the SCP 170 (S260), and the SCP 170 transmits the sound source to the outgoing mobile telecommunication switching center 140. Request to release the call with the providing device 180 (S262). The calling mobile communication switching center 140 that is requested to release the call requests the call release to the sound source providing apparatus 180 (S264), and the sound source providing apparatus 180 responds to the call release to the calling mobile communication switching center 142. (S266) The call between the originating mobile communication switching center 142 and the sound source providing device 180 is completed.

The source mobile communication switching center 140 that completes the call release with the sound source providing apparatus 180 controls the originating radio base station 130 to release the setting of the bypass mode in order to cancel the bypass mode set in step S232. And, by sending a signaling message to the outgoing mobile communication terminal 110 to control the outgoing mobile communication terminal 110 to switch the basic codec to a voice codec (S268), the alert information (Alert) to the outgoing mobile communication terminal 110 Information) is transmitted (S270) to notify that the incoming mobile communication terminal 112 has responded. The originating mobile communication terminal 110 analyzes the signaling message received in step S264 and converts the basic codec into a voice codec (S272).

Thereafter, a voice call channel is established between the outgoing mobile terminal 110, the outgoing mobile communication exchange 140, the incoming mobile communication exchange 142, and the incoming mobile communication terminal 112 so that the incoming mobile communication with the outgoing mobile terminal 110 is performed. A voice call is performed between the communication terminals 112 (S274).

Accordingly, the mobile communication network 120 can provide a high quality ringback tone replacement sound to the mobile communication terminal by providing a ringback tone replacement sound source by adaptively changing the codec by dividing the ringback tone replacement sound service interval and the voice call service interval. Can be. In addition, the mobile communication terminal is provided with an audio codec and a voice codec to decode and reproduce ringback tone replacement sound with an audio codec, and to decode and play a voice call with a voice codec, thereby providing a high quality ringback tone replacement sound service and a voice call service. Can be done.

In addition, even in an outgoing call-oriented multimedia ringback tone replacement tone service, an intelligent network, i.e., to minimize the modification or change of other devices of the existing mobile communication network 120, such as the outgoing mobile communication switching station 140, the incoming mobile communication switching station 142, or the like. SCP (170) can be used to provide high quality ringback tone replacement service.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, the mobile communication provider distinguishes the ringback tone replacement sound service interval and the voice call service interval and adaptively changes the codec to provide a ringback tone replacement sound source so as to provide a high quality ring to the mobile communication terminal. Backtone replacement sound can be provided to improve the quality of service.

In addition, the mobile communication terminal is provided with an audio codec and a voice codec to decode and reproduce ringback tone replacement sound with an audio codec, and to decode and play a voice call with a voice codec, thereby providing a high quality ringback tone replacement sound service and a voice call service. The mobile subscriber can feel the improvement of the quality of service.

In addition, even in an outgoing call center, it is possible to provide a high quality ringback tone replacement sound service using an intelligent network so as to minimize modification or change of other devices of an existing mobile communication network such as an outgoing mobile communication exchange station or an incoming mobile communication exchange station. The cost of providing a service and the cost can be reduced.

Claims (24)

Originating radio base station, called radio base station, originating mobile communication switching center, called mobile communication switching center, home location register (HLR: Home Location Register) (HLR), service control point (SCP) In the mobile communication network comprising a sound source providing apparatus) and a ringback tone replacement sound service to the calling mobile terminal requesting a call to the receiving mobile communication terminal, (a) receiving the call from the calling mobile terminal at the calling mobile communication switching center; (b) receiving a request for processing of the ringback tone substitute tone service from the originating mobile communication switching center in the SCP; (c) the SCP receives the function specification information of the originating mobile communication terminal from the originating mobile communication switching center and determines whether the originating mobile communication terminal can play an audio codec sound source that is a ringback tone substitute sound encoded with an audio codec; Confirming; (d) if the originating mobile communication terminal can play the audio codec sound source as a result of the checking in step (c) in the SCP, controlling the originating mobile communication switching center to perform a call connection with the sound source providing apparatus; step; (e) requesting, from the sound source providing apparatus, to set the bypass mode to the calling mobile communication switching center; (f) setting the bypass mode at the originating mobile telecommunication switching center; And (g) transmitting the audio codec sound source from the sound source providing device to the originating mobile communication terminal; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network comprising a. The method of claim 1, wherein step (b) comprises: (b1) checking whether the caller is subscribed to a ringback tone substitute tone service at the calling mobile communication switching center; And (b2) requesting the SCP to process the ringback tone replacement tone service when the caller is subscribed to the ringback tone replacement tone service as a result of the checking in step (b1) at the originating mobile communication switching center; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network comprising a. The method of claim 2, wherein the method is After the step (b3), (b4) if the caller is not subscribed to the ringback tone replacement tone service as a result of the checking in step (b1), providing a ringback tone to the calling mobile terminal by the calling mobile communication switching center; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 1, wherein the method is After step (d) above, (d1) If the originating mobile communication terminal cannot reproduce the audio codec sound source as a result of the checking of the step (c) in the SCP, the sound source providing apparatus causes the sound source providing apparatus to perform the ringback tone replacement sound. Controlling to send to the terminal Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 1, wherein the method is After the step (f), (f1) controlling the originating mobile communication terminal to set the audio codec as a default codec at the originating mobile communication switching center; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 1, wherein step (g) (g1) requesting and receiving sound source information, which is information on the audio codec sound source, from the sound source providing device to the SCP; And (g2) analyzing the sound source information in the sound source providing apparatus to identify, search for, and transmit the audio codec sound source to the calling mobile communication terminal; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network comprising a. The method of claim 1, wherein the method is After step (g), (h) decoding and playing the audio codec sound source with the audio codec in the calling mobile communication terminal; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 1, wherein the method is After step (g), (i) requesting to set a response trigger detection point from the SCP to the terminating mobile communication switching center and requesting to continue a call progress; (j) paging the called mobile communication terminal at the called mobile communication switching center; (k) receiving a response to paging from the terminating mobile communication terminal at the terminating mobile communication switching center; (l) controlling, at the SCP, the originating mobile communication switching center to release a call setup with the sound source providing apparatus; (m) releasing the call setting and the call setting from the originating mobile communication switching center and releasing the setting of the bypass mode; And (n) informing the originating mobile communication terminal of the response of the called mobile communication terminal to the originating mobile communication switching center; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 8, wherein After said step (m), (l1) controlling the originating mobile communication terminal to set a voice codec as a default codec at the originating mobile communication switching center; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. The method of claim 9, wherein the method is (o) performing the call with the called mobile communication terminal using the voice codec in the calling mobile communication terminal; Method for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network further comprising a. In the system for providing a ringback tone replacement sound service to the calling mobile terminal requesting a call to the incoming mobile terminal, A home location register (HLR) for storing location information about the calling mobile terminal and the called mobile terminal, capability information of the terminal, information on whether to subscribe to the ringback tone replacement tone service, and routing information. HLR '); A sound source providing apparatus for storing a plurality of sound sources including an audio codec sound source encoded with an audio codec and providing the same to the calling mobile terminal; An outgoing wireless base station for receiving and transmitting the call from the outgoing mobile communication terminal and setting a bypass mode to deliver the audio codec sound source to the outgoing mobile communication terminal in the bypass mode; The mobile terminal receives the call and checks whether a caller is subscribed to the ringback tone replacement tone service, requests processing of the ringback tone substitute tone service, collects, generates and delivers function specification information of the calling mobile communication terminal, When the bypass mode is requested, the calling wireless base station is controlled to set the bypass mode, and the call setting is performed with the sound source providing apparatus to receive the audio codec sound source and the calling through the calling wireless base station. An outgoing mobile telecommunication switching center for transmitting to a mobile telecommunication terminal; And The calling mobile communication switching center receives a request for processing of the ringback tone replacement tone service, receives the function specification information, checks whether the calling mobile communication terminal can play the audio codec sound source, and causes the calling mobile communication switching center to A service control point (SCP), which requests to connect a call to the sound source providing apparatus and requests setting of the bypass mode (hereinafter referred to as an 'SCP') Outgoing-centered multimedia ringback tone replacement sound service providing system using an intelligent network comprising a. The method of claim 11, wherein the SCP, Call center-oriented multimedia ringback tone replacement sound service using an intelligent network, characterized in that receiving sound source information, which is information about the audio codec source set by the caller, from the sound source providing device and transmitting the sound source information to the sound source providing device Provide system. The method of claim 11, wherein the SCP, If the calling mobile communication terminal cannot play the audio codec sound source, the sound source providing apparatus provides a ring back tone replacement sound source encoded with a voice codec to the calling mobile communication terminal. Outgoing-oriented multimedia ringback tone replacement sound service providing system. The method of claim 11, wherein the system, When the call setting request is received from the calling mobile communication switching station, the called mobile communication terminal is paged, and when there is a response to paging from the called mobile communication terminal, the calling mobile communication switching station is notified of the response of the called mobile communication terminal, A terminating mobile communication switching station which completes the call setup with the originating mobile communication switching center and relays a voice call between the originating mobile communication terminal and the terminating mobile communication terminal; Outgoing-centered multimedia ringback tone replacement sound service providing system using an intelligent network, characterized in that it further comprises. The method of claim 14, wherein the SCP, And a request for continuing a response trigger detection point to the destination mobile communication switching center, and requesting to continue a call progress. The method of claim 15, wherein the SCP, When the originating mobile communication switching center is notified of the response from the called mobile communication switching center, the originating mobile communication multimedia using the intelligent network, characterized in that for controlling the originating mobile communication switching station to release the call setup with the sound source providing apparatus. Ringback tone replacement sound service providing system. 17. The system of claim 16, wherein the outgoing mobile communication switching center is: And a system for canceling the call setup with the sound source providing apparatus and controlling the originating radio base station to release the bypass mode. 12. The system of claim 11, wherein the originating mobile communication switching center is: System for providing a call-backed multimedia ringback tone substitute sound using an intelligent network, characterized in that for controlling the outgoing mobile terminal to set the audio codec as the default codec. 18. The system of claim 17, wherein the originating mobile communication switching center is: System for providing a call center multimedia ringback tone substitute sound using an intelligent network, characterized in that for controlling the outgoing mobile terminal to set the voice codec as the default codec. The method of claim 11, wherein the originating mobile communication terminal, System for providing a call-backed multimedia ringback tone substitute sound using an intelligent network, characterized in that for playing the audio codec sound source with the audio codec. The mobile terminal of claim 19, wherein the originating mobile communication terminal comprises: System for providing a call-backed multimedia ringback tone substitute sound using an intelligent network, characterized in that for performing the call with the incoming mobile communication terminal using the voice codec. The method of claim 11, wherein the system, The sound source providing device further includes a plurality of ringback tone replacement sound sources, performs sound source authentication, and further includes a sound source providing unit for changing a setting of a sound source code, wherein the SCP provides the sound source in association with the sound source providing unit. An outgoing call center multimedia ringback tone replacement sound service system, characterized in that for responding to an inquiry of sound source information of a device. In a mobile communication network providing a ringback tone replacement sound service to an outgoing mobile communication terminal requesting a call to an incoming mobile communication terminal, the apparatus for providing the ringback tone replacement sound service using an intelligent network, A ring which is requested to process the ringback tone replacement sound service from an originating mobile communication exchange jurisdiction over the originating mobile communication terminal and receives function specification information for the originating mobile communication terminal, wherein the originating mobile communication terminal is encoded by an audio codec Checking whether the audio codec sound source, which is a back tone replacement sound source, can be reproduced, requesting the outgoing mobile communication exchange to set the bypass mode, and causing the mobile communication network to transfer the audio codec sound source to the bypass mode. Service control point (SCP) function to control transmission to communication terminal Device for providing a call center-oriented multimedia ringback tone replacement sound using an intelligent network comprising a. The method of claim 23, wherein the device, And when the calling mobile communication terminal cannot reproduce the audio codec, the mobile communication network further includes a function of transmitting a ringback tone substitute sound source encoded by a voice codec to the calling mobile communication terminal. Device for providing a call-centered multimedia ringback tone substitute sound using an intelligent network.

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