KR100747693B1 - Method, system and apparatus for providing multimedia ring back tone alternative service according to capability of mobile communication terminal - Google Patents

Abstract

A multimedia RBT(Ringback Tone) alternative sound service method in accordance with capabilities of a mobile communication terminal, a system therefor, and a device therefor are provided to supply various types of multimedia RBT alternative sound services in consideration of whether the terminal can decode an RBT alternative sound source by using an audio CODEC(Coder Decoder). A call is requested by a sending terminal, and a speech path is connected(S202). Capabilities of the sending terminal are grasped to determine whether the terminal can decode/reproduce an audio CODEC sound source(S204). If so, it is checked whether a receiver subscribes for an RBT alternative sound service(S206). If so, a sound source set by the receiver is encoded by the audio CODEC and provided to the sending terminal(S208,S210). If the receiver does not subscribe for the service, it is checked whether a sender subscribes for the service(S212). If so, a sound source set by the sender is encoded by the audio CODEC and provided to the sending terminal(S214,S216).

Description

Method, system and apparatus for providing multimedia ring back tone alternative sound service according to the capability of mobile communication terminal {Method, System and Apparatus for Providing Multimedia Ring Back Tone Alternative Service According to Capability of Mobile Communication Terminal}

1 is a block diagram schematically illustrating a system for providing a multimedia ringback tone replacement sound service according to a capability of a mobile communication terminal according to an embodiment of the present invention;

2 is a flowchart illustrating a method for providing a multimedia ringback tone substitute sound service according to a capability of a mobile communication terminal according to an embodiment of the present invention;

3A and 3B are exemplary views showing the first half and the second half of a detailed description of a method for providing a multimedia ringback tone substitute sound service according to a capability of a mobile communication terminal according to an exemplary 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

160: HLR 170: gateway

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, system and apparatus for providing a multimedia ringback tone replacement sound service according to a capability of a mobile communication terminal. More specifically, in providing a multimedia ringback tone replacement sound service using an audio codec by dividing it into an audio section and a voice interval instead of a ringback tone replacement sound service using a conventional voice codec, the caller or the called party's ringback tone replacement sound service In addition to subscribing to the service provider, various types of multimedia ringback tone replacement sound services are provided in consideration of the caller's capability of the mobile communication terminal, that is, whether the mobile communication terminal can decode the ringback tone replacement sound source using an audio codec. A method, system, and apparatus are provided.

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), which is generally referred to as "EVRC", is adaptive for providing the aforementioned ringback tone replacement sound service. A variable rate voice codec such as an adaptive multi rate codec (AMR) (hereinafter referred to as 'AMR') is used. 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). Incoding). 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 works can supplement the quality of ringback tone substitute sound service through EVRC codec to the level of voice quality, but there is a problem in that the quality of 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, 8 Kbps voice channel is used for the voice channel of the CDMA 2000 system, and 12.3 Kbps voice channel is used for the Global System for Mobile Communications (GSM) system. 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.

On the other hand, since the normal ringback tone replacement service provides the ringback tone replacement sound using only the voice codec, it is necessary to provide a ringback tone replacement sound source set by the caller or a ringback tone replacement sound source set by the called party. You only need to decide if you want to provide it. That is, the caller-centered ringback tone substitute tone service and the caller-centered ringback tone substitute tone service are used, and the double caller-centered ringback tone substitute tone service is commonly used.

In the case of a caller-centered ringback tone replacement tone service, a typical ringback tone replacement tone service determines whether to provide a service only by whether or not the called party is subscribed to the ringback tone replacement tone service. However, in order to provide the above-described high quality ringback tone replacement sound service, it is necessary to additionally check whether the caller's mobile communication terminal can perform the multimedia ringback tone replacement sound service as well as whether the called subscriber subscribes to the service.

That is, in the call center ringback tone replacement sound service, even if the caller's mobile communication terminal is provided with an audio codec to perform the multimedia ringback tone replacement sound service, the caller usually does not subscribe to the ringback tone replacement sound service. Even if the in- ringback tone replacement sound is provided and the subscriber is subscribed to the ringback tone replacement sound service, if the subscriber is not subscribed to the multimedia ringback tone replacement sound service, there is no choice but to provide a normal ringback tone replacement sound using a voice codec.

As a result, the type of service should be determined by considering the caller's mobile terminal's capability, i.e., whether the multimedia ringback tone substitute tone service can be performed and whether the caller and the called party subscribe to the ringback tone substitute tone service. .

Therefore, it is necessary to diversify the service by presenting a model of a ringback tone replacement sound service that can fully reflect the capability of the caller's mobile communication terminal. In other words, even if the called party is not subscribed to the ringback tone replacement tone service, it is required to develop a scheme for providing various ringback tone replacement tone services according to the caller's mobile communication terminal capability or service subscription state.

In order to solve this problem and to meet the demands, the present invention provides a multimedia ringback tone replacement sound service using an audio codec instead of a ringback tone replacement sound service using a conventional voice codec. In consideration of whether the calling party or the called party subscribes to the ringback tone replacement sound service, as well as the caller's mobile terminal's capability, that is, whether the mobile terminal can decode the ringback tone replacement sound source using an audio codec, is considered. Accordingly, an object of the present invention is to provide a method, a system, and an apparatus for providing a multimedia ringback tone substitute sound service in various forms.

In order to achieve the above object, the present invention provides a ringback tone substitute tone service to a calling mobile terminal requesting a call from a mobile communication network to a called mobile terminal, the method comprising: (a) requesting a call from a calling mobile terminal; Receiving and connecting a call; (b) identifying a capability of the calling mobile communication terminal to determine whether the terminal decodes and reproduces an audio codec sound source which is a sound source encoded with an audio codec; (c) confirming whether the called party is subscribed to the ringback tone replacement sound service when the calling mobile communication terminal is a terminal that decodes and reproduces an audio codec sound source as a result of checking in step (b); (d) when the called party subscribes to the ringback tone replacement sound service as a result of checking in step (c), encoding the sound source set by the called party with an audio codec and providing the same to the calling mobile terminal; (e) if the called party is not subscribed to the ringback tone replacement tone service as a result of checking in step (c), checking whether the caller is subscribed to the ringback tone substitute tone service; And (f) if the caller is subscribed to the ringback tone replacement service as a result of checking in step (e), encoding the sound source set by the caller with an audio codec and providing the same to the calling mobile terminal. Provided is a method for providing a multimedia ringback tone replacement sound service according to the capability of a mobile communication terminal.

In addition, according to another object of the present invention, the calling mobile communication terminal for requesting a voice call, the incoming mobile communication terminal for receiving a voice call and a sound source providing unit for providing a sound source of the ringback tone replacement sound, and the outgoing mobile communication terminal A system for providing a ringback tone replacement sound service, comprising: receiving a voice call from an originating mobile communication terminal, establishing a call path with an outgoing mobile terminal, information on the capability of the calling mobile communication terminal, and a ringback tone replacement sound service of a caller Multimedia ring according to the capability of the mobile communication terminal comprising a mobile communication network for identifying and providing the type of service to be provided to the calling mobile communication terminal by checking the information on the ringback tone replacement sound service of the called party Provides a system to provide back tone replacement sound service.

In addition, according to another object of the present invention, in the apparatus for providing a ringback tone replacement sound service to the calling mobile terminal requesting a call from the mobile communication network to the incoming mobile communication terminal, the telephone number of the calling mobile terminal, the caller Information about the calling mobile terminal, including information about the ringback tone replacement tone service and the capability of the calling mobile terminal, including the telephone number of the called mobile terminal and information about the ringback tone replacement tone service of the called party The present invention provides an apparatus for providing a multimedia ringback tone replacement sound service according to the capability of a mobile communication terminal, characterized by receiving and receiving information on an incoming mobile communication terminal to identify and provide a type of service to be provided to an outgoing mobile communication terminal.

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 are used 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.

That is, in providing a ringback tone substitute sound instead of the conventional ringback tone to the wireless terminal in the wireless network, the wireless terminal changes the codec for the sound source of the ringback tone substitute sound to a voice codec or an audio codec in the wireless network. And the sound source according to whether the caller and the receiver subscribe to the ringback tone alternative sound service, whether the multimedia ringback tone alternative sound service is subscribed, and the caller's mobile terminal capabilities. If so, it will be within the scope of the technical idea of the present invention.

1 is a block diagram schematically illustrating a system for providing a multimedia ringback tone substitute sound service according to a capability of a mobile communication terminal according to an exemplary embodiment of the present invention.

Multimedia ringback tone substitute sound service providing system according to the capability of the mobile communication terminal according to an embodiment of the present invention is the outgoing mobile communication terminal 110, terminating mobile communication terminal 112, mobile communication network 120 and the sound source providing unit ( 190).

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 a caller's key manipulation, and the called party rings the ringback tone. When subscribing to a substitute sound service, the mobile communication terminal receives and outputs a ringback tone substitute 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 substitute sound is encoded with the audio codec, when receiving a data burst message (DBM) as a signaling message requesting to change to the audio codec, the default codec is replaced with the audio codec. In this case, the audio source received from the mobile communication network 120 is decoded and reproduced by an audio codec.

In addition, when the outgoing mobile communication terminal 110 according to the preferred embodiment of the present invention receives a data burst message as a signaling message requesting to change the voice codec from the mobile communication network 120, the default codec is changed to the voice codec and changed. Make a voice call with the voice 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 (150), home location register (HLR: Home Location Register, hereinafter referred to as 'HLR', 160), including the gateway 170 and the sound source providing device 180, the outgoing mobile communication terminal 110 And a communication network for providing a voice call service and a ringback tone replacement sound service to the called 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 receiving the bypass setting message, which is a Transcoder control request message to switch to the bypass mode from the outgoing mobile communication switching center 140, the mobile station switches to the bypass mode and receives from the outgoing mobile switching center 140. The audio codec sound source is relayed to the outgoing mobile communication terminal 110 without being passed through the vocoder.

In addition, the originating radio base station 130 according to the preferred embodiment of the present invention releases the bypass mode when receiving the bypass release message, which is a transcoder control request message to release the bypass mode from the originating mobile communication switching center 140 Voice calls for voice calls are vocoded using a vocoder and relayed 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 switching center 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 and the outgoing mobile communication terminal 110 is connected to a call path, the incoming call is transferred. When the ISUP call setup is performed with the communication switching station 142 and the information on the ringback tone replacement sound, the information on the bypass mode, and the control information are received from the sound source providing apparatus 180, the originating radio base station 130 is bypassed. Control to switch to

In addition, the outgoing mobile communication switching center 140 according to the preferred embodiment of the present invention controls to switch the outgoing wireless base station 130 to the bypass mode and then sends a signaling message through the outgoing wireless base station 130 to send outgoing mobile communication. The terminal 110 controls the basic codec to be changed to an audio codec, and transmits the audio codec sound source from the sound source providing apparatus 180 to the calling mobile communication terminal 110.

In addition, when the originating mobile communication switching center 140 according to the preferred embodiment of the present invention is notified of the response of the terminating mobile communication terminal 112 from the terminating mobile communication switching center 140, it causes the calling wireless base station 130 to bypass. Control to release the mode, and control the originating mobile communication terminal 110 to switch the basic codec to the voice codec, and reporting the response of the terminating mobile communication terminal 112 as alert information (Alert Information). Notify 110 to perform a voice call between the calling mobile communication terminal 110 and the destination mobile communication terminal 112.

In addition, the outgoing mobile communication switching center 140 according to the preferred embodiment of the present invention, when establishing an ISUP call with the incoming mobile communication switching station 142, the telephone number of the outgoing mobile communication terminal 110 to the destination mobile communication switching center 142. And transmits information about the calling mobile communication terminal 110 including information on the caller's ring back tone replacement tone service and information about the capability of the calling mobile communication terminal 110.

When the incoming mobile communication switching center 142 according to the preferred embodiment of the present invention is informed by the calling mobile communication switching station 140 that there is a voice call request for the incoming mobile communication terminal 112, Perform ISUP call setup, paging the incoming mobile communication terminal 112, perform ISUP call setup with the sound source providing apparatus 180, and send an audio codec sound source received from the sound source providing apparatus 180. Transmit to the switching center 140.

In addition, when there is a response from the terminating mobile communication terminal 112, the terminating mobile communication switching station 142 according to an embodiment of the present invention notifies the calling mobile communication switching station 140, from the sound source providing device 180 The audio codec sound source transmitted to the outgoing mobile communication switching center 140 is relayed, and a voice call between the outgoing mobile communication terminal 110 and the destination mobile communication terminal 112 is relayed.

In addition, the incoming mobile communication switching center 142 according to the preferred embodiment of the present invention, when the ISUP call is established with the sound source providing apparatus 180, for the outgoing mobile communication terminal 110 received from the outgoing mobile communication switching center 140. In addition to the information, information about the terminating mobile communication terminal 112 including the telephone number of the terminating mobile communication terminal 112 and information on the ringback tone replacement sound service of the called party is transmitted to the sound source providing apparatus 180.

Here, the information on the ringback tone replacement tone service of the calling mobile terminal 110 and the called mobile terminal 112 is information indicating whether the caller and the called party subscribe to the ringback tone replacement tone service. The information on the capability of 110 refers to information indicating whether the outgoing mobile communication terminal 110 can perform a multimedia ringback tone replacement sound service by decoding and playing an audio codec encoded with an audio codec having an audio codec. .

The common line signal network 150 refers to a network that is composed of signal points and signal links and provides a common line signaling system standardized in 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 for providing information and sound source such as a mobile subscriber's telephone number, a mobile identification number (MIN), an electronic serial number (ESN), a ringback tone replacement tone service, etc. Stores information for routing.

The gateway 170 is a device that interconnects a plurality of different types or same types of communication networks to exchange information with each other. The gateway 170 converts protocols by interconnecting a plurality of incompatible networks or devices with different protocols. Relay information to send and receive information between

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 received, 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. A ringback tone substitute sound source is transmitted to the switching center 142. 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 the ISUP call setup with the terminating mobile communication switching center 142 and then the originating mobile communication terminal 110 received from the terminating mobile communication switching center 142. The ringback tone replacement tone service information including the information and the information about the incoming mobile communication terminal 112 is used to determine which ringback tone replacement tone service should be provided, that is, the type of service. This will be described in detail with reference to FIG. 2.

In this case, when providing a multimedia ringback tone replacement sound service that provides an audio codec encoded with an audio codec to the calling mobile communication terminal 110, information on a ringback tone replacement sound of the corresponding sound source, information on a bypass mode, and the like. After generating control information, the control information is transmitted to the outgoing mobile communication switching center 140, and the audio codec sound source is transmitted to the terminating mobile communication switching center 142.

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 System (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. The authentication of the sound source is performed using information on the caller and the called party of the terminal 112, information on a 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.

2 is a flowchart illustrating a method for providing a multimedia ringback tone replacement sound service according to a capability of a mobile communication terminal according to an exemplary embodiment of the present invention.

When the outgoing mobile communication terminal 110 requests a voice call with the incoming mobile communication terminal 112 to the mobile communication network 120, the mobile communication network 120 establishes a call path with the outgoing mobile communication terminal 110 and the incoming movement. After paging the communication terminal 112, it is checked whether a ringback tone replacement tone service is provided to the calling mobile terminal 110, that is, the type of service.

That is, when the mobile communication network 120 receives a call request from the calling mobile communication terminal 110 (S202), whether the calling mobile communication terminal 110 can decode and reproduce the audio codec sound source encoded using the audio codec. Check whether or not (S204). This is to provide a conventional ringback tone replacement sound service or to provide a simple ringback tone if the calling mobile communication terminal 110 cannot process an audio codec sound source.

If the calling mobile communication terminal 110 is a terminal capable of processing the audio codec sound source, the mobile communication network 120 checks whether the called party is subscribed to the ringback tone replacement sound service (S206).

When the called party subscribes to the ringback tone replacement service, the mobile communication network 120 searches for and selects a sound source set by the called party (S208), and then sends an audio codec sound source for the selected sound source. Provided to 110 (S210).

In addition, when the called party is not subscribed to the ringback tone replacement service, the mobile communication network 120 checks whether the caller is subscribed to the ringback tone replacement tone service (S212). If the caller is not subscribed to the ringback tone replacement service as a result of checking in step S212, the mobile communication network 120 terminates the procedure to provide a normal ringback tone to the calling mobile communication terminal 110, and the caller replaces the ringback tone. In the case of subscribing to a sound service, the searcher selects and selects a sound source set by the caller or randomly searches and selects a sound source (S214), and provides an audio codec sound source for the selected sound source to the calling mobile terminal 110 (S216). .

Here, the reason for randomly searching and selecting a sound source is that when one of the sound sources set for the outgoing mobile terminal 110 is selected and searched, only one or a few of the sound sources are the multimedia ringback tone substitute sound source. Since it may not be possible to provide a variety of sound sources, depending on whether the outgoing mobile communication terminal 110 subscribes to the ringback tone replacement sound service when providing a multimedia ringback tone replacement sound service by randomly searching and selecting a sound source It is desirable to provide ringback tone replacement.

On the other hand, the mobile communication network 120 checks whether the called party is subscribed to the ringback tone replacement sound service when the calling mobile communication terminal 110 cannot process the audio codec sound source as a result of checking in step S204 (S218).

If the called party subscribes to the ringback tone replacement service, the mobile communication network 120 searches for and selects a sound source set by the called party (S220), and selects a voice codec sound source (ie, a voice codec for the selected sound source). To replace the conventional ringback tone sound source) is provided to the calling mobile communication terminal 110 (S222).

In addition, when the called party is not subscribed to the ringback tone replacement service, the mobile communication network 120 checks whether the caller is subscribed to the ringback tone replacement tone service (S224), and the caller replaces the ringback tone. If the user is not subscribed to the sound service, the procedure is terminated, and the general mobile ringback tone is provided to the calling mobile terminal 110. If the caller is subscribed to the ringback tone replacement service, the caller sets the search and selects the sound source. In operation S226, the voice codec sound source for the selected sound source is provided to the calling mobile terminal 110 (S228).

Referring to FIG. 2, a method of providing a multimedia ringback tone replacement sound service based on the capability of the mobile communication terminal based on the mobile communication network 120 has been described. Hereinafter, a process of processing the aforementioned method in the mobile communication network 120 will be described in detail with reference to FIGS. 3A and 3B.

3A and 3B are exemplary views showing the first half and the second half of a detailed description of a method for providing a multimedia ringback tone substitute sound service according to a capability of a mobile communication terminal according to an exemplary embodiment of the present invention.

3A and 3B, the multimedia ring back tone replacement sound service providing method according to the capability of the mobile communication terminal according to the preferred embodiment of the present invention is described in detail, as described above. It should be clearly appreciated that the mobile communication system constituting 120 is assumed to be a CDMA 2000 system. Therefore, in other mobile communication systems, terms and functions of the following description will be somewhat different.

The calling mobile communication terminal 110 requests a call by transmitting information on the called mobile communication terminal 110, that is, a telephone number, etc., to the calling wireless base station 130 according to the caller's key manipulation (S302). The outgoing wireless base station 130 that has received the call request requests the setting of the call path to the outgoing mobile communication switching center 140 (S304), and the outgoing mobile communication switching center 140 transmits the calling path to the outgoing wireless base station 130. Request to allocate to the mobile communication terminal 110 (S306).

The outgoing wireless base station 130 connects with the outgoing mobile communication terminal 110 in a call (S308), and the outgoing mobile communication terminal 110 notifies the outgoing wireless base station 130 that the call path is connected and confirms it (S310). The originating radio base station 130 notifies the originating mobile communication switching center 140 that the allocation of the call is completed (S312).

When the outgoing mobile communication switching center 140 confirms that the calling mobile terminal 110 and the call path are connected through the outgoing wireless base station 130, it uses the HLR 160 in the area where the incoming mobile communication terminal 110 is located. Recognizing the incoming mobile communication switching station 142, which is a mobile communication switching station, sets an ISUP call with the incoming mobile communication switching station 142 (S314). At this time, the outgoing mobile communication switching center 140 includes the outgoing mobile communication including the telephone number of the outgoing mobile communication terminal 110, information on the caller's ringback tone replacement tone service, and information on the capability of the outgoing mobile communication terminal 110. Information about the terminal 110 is transmitted to the terminating mobile communication switching center 142.

The terminating mobile communication switching station 142, which has set up the ISUP call with the outgoing mobile communication switching station 140, calls, that is, pages the incoming mobile communication terminal 112 using the terminating wireless base station 122 (S316), and the sound source providing apparatus. In step S318, the incoming mobile communication switching center 142 sets up the incoming mobile communication terminal 110 as well as information about the outgoing mobile communication terminal 110 received from the outgoing mobile switching center 140 in step S314. Information about the called mobile communication terminal 112 including the telephone number of the communication terminal 112 and information on the ringback tone replacement tone service of the called party is transmitted to the sound source providing device 180.

The sound source providing device 180 that sets up the ISUP call with the destination mobile communication switching center 142 determines the type of service to be provided to the calling mobile communication terminal 110, and the outgoing movement received from the destination mobile communication switching center 142. The type of service is determined by analyzing the information about the communication terminal 110 and the information about the incoming mobile communication terminal 112 (S320).

Here, since the sound source providing apparatus 180 determines the type of service has been described with reference to FIG. 2, a detailed description thereof will be omitted. Hereinafter, for convenience of description, only the case where the calling mobile communication terminal 110 can process the audio codec sound source will be described. That is, the following description assumes that at least one of the caller and the called party is subscribed to the ringback tone replacement service, and the calling mobile communication terminal 110 can process the audio codec sound source.

The sound source providing apparatus 180 having determined the type of service in step S320 includes information on the bypass mode and control information to the calling mobile communication switching center 140 to provide an audio codec sound source to the calling mobile communication terminal 110. The ISUP_CPG message is transmitted to the calling mobile communication switching center 140 (S322).

Receiving the ISUP_CPG message, the originating mobile switching center 140 transmits a bypass setup message, a Transcoder Control Request message, to the originating radio base station 130 to switch to the bypass mode, and the originating radio. When the base station 130 receives the transcode control request message, the base station 130 switches to the bypass mode in which the vocoder is not operated and sends a bypass setup confirmation message, which is a transcoder control acknowledgment message indicating that the conversion is completed. It transmits to the switching center 140 (S324).

In addition, the outgoing mobile communication switching center 140 that controls the outgoing wireless base station 130 as shown in step S324 converts the basic codec of the outgoing mobile communication terminal 110 into an audio codec. Teleservice Identifier) transmits a data burst message having a specific value (for example, 61888) as a signaling message (S326).

Receiving the data burst message, the calling mobile terminal 110 confirms that a specific value of the TI of the data burst message, that is, 61888, is requested to switch to the audio codec. For example, a data burst acknowledgment message (61889) is transmitted to the outgoing mobile communication switching center 140 through the outgoing radio base station 130 as a signaling message (S328). This message is a non-reprocessable message, and the originating mobile switching center 140 receiving the message does not perform any other operation.

The originating mobile communication terminal 110 that transmits the data burst confirmation message converts the basic codec into an audio codec (S330).

After the basic codec of the outgoing mobile communication terminal 110 is converted into an audio codec, an audio codec sound source is transmitted to the outgoing mobile communication terminal 110. That is, the sound source providing device 180 transmits the audio codec sound source set to the ringback tone replacement sound set for the calling mobile communication terminal 110 or the incoming mobile communication terminal 112 to the called mobile communication switching center 142, and the incoming call is transferred. The communication switching center 142 relays the audio codec sound source to the calling mobile communication switching center 140, and the calling mobile communication switching center 140 transmits to the calling mobile communication terminal 110 through the calling wireless base station 130 (S332). .

The originating mobile communication terminal 110 receiving the audio codec sound source decodes the audio codec sound source with the audio codec set as the default codec to reproduce the ringback tone replacement sound (S334). In this case, it is preferable that the calling mobile communication terminal 110 selects or changes the applied codec by searching the bit stream of the received audio codec sound source. That is, if the data burst message received by the originating mobile communication terminal 110 from the originating mobile communication switching station 140 has an error, or if the codec is not changed normally, for example, when it is different from the codec provided by the designated codec, In preparation, it is desirable to search the received audio codec sound source and change the default codec to an appropriate audio codec.

Thus, the mobile communication network 120 may provide an audio codec sound source encoded with an audio codec to the calling mobile communication terminal 110, and the calling mobile communication terminal 110 may play an audio codec sound source using the audio codec. In addition to improving the quality of the ringback tone replacement sound service, the capability of the outgoing mobile terminal 110 in the mobile communication network 120, the ringback tone of the outgoing mobile terminal 110 or the terminating mobile terminal 112 Various ringback tone replacement sound services may be provided by comprehensively considering whether to subscribe to a replacement sound service.

On the other hand, while the outgoing mobile terminal 110 reproduces the ringback tone replacement tone, the incoming mobile terminal 112 may respond to the call request of the outgoing mobile terminal 110, that is, the paging of the incoming mobile switching center 142. Can be. In this case, the mobile communication network 120 should perform a voice call between the calling mobile communication terminal 110 and the called mobile communication terminal 112. Hereinafter, by controlling the outgoing mobile terminal 110 converting the basic codec to the audio codec to the voice codec, the outgoing mobile terminal 110 may perform a voice call with the incoming mobile terminal 112 and the voice codec. Explain how to do this.

When the called mobile communication terminal 112 receives a paging request from the called mobile communication switching center 142 in step S414, the called party notifies the called party of a ring, vibration, etc., and the called party confirms this and presses a specific key or opens a folder. As a specific action, the incoming mobile communication terminal 112 is operated to express the intention to receive the call. At this time, the terminating mobile communication terminal 112 responds to paging of the terminating mobile communication switching center 142 (S336).

Receiving a response to paging, the terminating mobile communication switching center 142 transmits an ISP_ANM message notifying that the terminating mobile communication terminal 112 has responded to the calling mobile communication switching station 140 (S338), and no longer ringback tone replacement tone That is, since it is not necessary to provide the audio codec to the calling mobile communication terminal 110, the ISUP call with the sound source providing apparatus 180 is released (S340).

The outgoing mobile communication switching center 140 receiving the ISUP_ANM message in step S338 releases the bypass, which is a transcoder control message requesting the release of the bypass mode to the outgoing radio base station 130 to release the bypass mode requested in step S324. The message is transmitted (S342). The outgoing wireless base station 130 releases the bypass mode and vocodes the voice to be transmitted to the outgoing mobile communication terminal 110 by vocoding the voice.

The originating mobile switching center 140, which requests the originating radio base station 130 to release the bypass mode, bursts the data whose TI is a specific value (for example, 61890) to switch the default codec of the originating mobile terminal 110. The message is transmitted to the outgoing mobile communication terminal 110 through the outgoing wireless base station 130 as a signaling message (S344).

Upon receiving the data burst message, the calling mobile terminal 110 checks a specific value of the TI and confirms a request to switch the default codec to the voice codec. In response, the calling mobile terminal 110 determines that the TI is a specific value (for example, 61891). The data burst acknowledgment message is transmitted to the calling mobile communication terminal 140 through the calling radio base station 130 as a signaling message (S346).

The outgoing mobile communication switching center 140 transmits alert information indicating that the incoming mobile communication terminal 112 has responded to the outgoing mobile communication terminal 110 through the outgoing wireless base station 130 (S348).

The outgoing mobile terminal 110 receiving the alert information switches the basic codec to the voice codec (S350), and performs a voice call with the incoming mobile communication terminal 112 using the voice codec (S352). At this time, the outgoing wireless base station 130 vocodes and transmits the voice to the voice codec switched in step S448, and the outgoing mobile communication terminal 110 reproduces the voice with the voice codec, thereby replacing the ringback tone encoded by the audio codec. That is, the audio codec sound source can be decoded and reproduced by the audio codec, and the voice can be decoded and reproduced by the voice codec. Therefore, it is possible to provide a high quality ringback tone replacement sound service by separately transmitting and reproducing voice and audio into a voice codec and an audio codec, respectively.

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. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit 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, in providing a ringback tone replacement sound service, a high quality multimedia ringback tone replacement sound service can be provided by separately applying an audio codec and a voice codec.

In addition, a multimedia ringback tone service, a typical ringback tone service, and the like may be provided by comprehensively considering a caller's capability of a mobile communication terminal, whether a caller or a called party subscribes to a ringback tone replacement tone service, and the like.

Claims (15)

A method for providing a ringback tone replacement sound service to a calling mobile terminal requesting a call from a mobile communication network to an incoming mobile terminal, (a) receiving the call from the calling mobile terminal and connecting a call path; (b) identifying a capability of the calling mobile communication terminal to determine whether the terminal decodes and reproduces an audio codec sound source which is a sound source encoded with an audio codec; (c) confirming whether the called party is subscribed to a ringback tone replacement sound service when the originating mobile communication terminal is a terminal that decodes and reproduces the audio codec sound source as a result of the checking in step (b); (d) if the called party is subscribed to the ringback tone replacement sound service as a result of the checking in step (c), encoding the sound source set by the called party with the audio codec and providing the same to the calling mobile communication terminal; (e) if the called party is not subscribed to the ringback tone replacement tone service as a result of the checking in step (c), checking whether a caller is subscribed to the ringback tone substitute tone service; And (f) if the caller is subscribed to the ringback tone replacement service as a result of the checking in step (e), encoding the sound source set by the caller with the audio codec and providing the same to the calling mobile communication terminal; Method for providing a multimedia ringback tone replacement sound service according to the capability of the mobile communication terminal comprising a. The method of claim 1, wherein the method is After the step (f), (g) if the called party is not subscribed to the ringback tone replacement tone service as a result of the checking in step (c), checking whether the caller is subscribed to the ringback tone substitute tone service; And (h) If the caller is subscribed to the ringback tone replacement service as a result of checking in step (g), randomly search for and select an arbitrary sound source to encode the random sound source with the audio codec to move the outgoing call. Providing to communication terminal Multimedia ring back tone replacement sound service providing method according to the capability of the mobile communication terminal, characterized in that it further comprises. The method of claim 1, wherein the method is After the step (f), (i) providing a ringback tone to the calling mobile terminal when the caller is not subscribed to the ringback tone replacement tone service as a result of checking in step (e); Method for providing a multimedia ringback tone replacement sound service according to the capability of the mobile communication terminal, characterized in that it further comprises. The method of claim 1, wherein the method is After step (c), (c1) confirming whether the called party is subscribed to the ringback tone replacement sound service when the calling terminal is not a terminal that decodes and reproduces the audio codec sound source as a result of the checking in step (b); And (c2) when the called party subscribes to the ringback tone replacement sound service as a result of checking in the step (c1), encoding the sound source set by the called party with a voice codec and providing it to the calling mobile communication terminal; Multimedia ring back tone replacement sound service providing method according to the capability of the mobile communication terminal, characterized in that it further comprises. The method of claim 4, wherein the method is After the step (c2), (c3) confirming whether the caller is subscribed to the ringback tone replacement tone service when the called party is not subscribed to the ringback tone replacement tone service as a result of the checking in step (c1); And (c4) if the caller subscribes to the ringback tone replacement service as a result of the checking in step (c3), encoding the sound source set by the caller with the voice codec and providing the same to the calling mobile communication terminal; Multimedia ring back tone replacement sound service providing method according to the capability of the mobile communication terminal, characterized in that it further comprises. The method of claim 5, wherein the method is After the step (c4), (c5) providing a ringback tone to the calling mobile terminal when the caller is not subscribed to the ringback tone replacement service as a result of the checking in step (c3); Multimedia ring back tone replacement sound service providing method according to the capability of the mobile communication terminal, characterized in that it further comprises. An outgoing mobile terminal for requesting a voice call, an incoming mobile communication terminal for receiving the voice call, and a sound source providing unit for providing a sound source for a ringback tone substitute sound, and providing a ringback tone substitute sound service to the outgoing mobile terminal. In the system, Receiving the voice call from the calling mobile communication terminal, establishing a call path with the calling mobile communication terminal, information on the capability of the calling mobile communication terminal, information on a caller's ring back tone replacement tone service, and a caller's ring back tone Mobile communication network that identifies and provides the type of service to be provided to the calling mobile communication terminal by checking information on the replacement sound service System for providing a multimedia ringback tone replacement sound according to the capability of the mobile communication terminal comprising a. The method of claim 7, wherein the type of service, A multimedia ringback tone replacement sound service for providing an audio codec sound source encoded as an audio codec as the sound source, A ringback tone replacement sound service for providing a voice codec sound source that is a sound source encoded with a voice codec as the sound source and a ringback tone System for providing a multimedia ringback tone replacement sound according to the capability of the mobile communication terminal, characterized in that it comprises one or more of the ringback tone service. The method of claim 8, wherein the mobile communication network, Analyzing the information about the capability of the calling mobile communication terminal, and when the calling mobile communication terminal is a terminal decoding and playing the audio codec sound source with the audio codec, the multimedia ringback tone replacement sound service is transmitted to the calling mobile communication terminal. Multimedia ringback tone replacement sound service providing system according to the capability of the mobile communication terminal, characterized in that provided. The method of claim 8, wherein the mobile communication network, If the originating mobile communication terminal is not a terminal that decodes and reproduces the audio codec sound source with the audio codec by analyzing information on the capability of the originating mobile communication terminal, the ringback tone replacement sound service is provided to the originating mobile communication terminal. Multimedia ringback tone replacement sound service providing system according to the capability of the mobile communication terminal, characterized in that provided by. The method of claim 8, wherein the mobile communication network, Analyzing the information on the ringback tone replacement tone service of the outgoing mobile terminal and the called mobile terminal, if the caller and the called party are not subscribed to the ringback tone replacement tone service, the ringback tone service is set to the outgoing mobile communication. Multimedia ring back tone replacement sound service providing system according to the capability of the mobile communication terminal, characterized in that provided by the terminal. The method of claim 8, wherein the mobile communication network, Analyzing the information on the capability of the calling mobile communication terminal, information on the ringback tone replacement sound service of the caller and the called party, and the calling mobile communication terminal decodes and plays the audio codec with the audio codec; When the called party is not subscribed to the ringback tone replacement tone service, and the caller is subscribed to the ringback tone alternative tone service, randomly search and select an arbitrary sound source, encode the audio codec, and then call the mobile terminal. Multimedia ringback tone replacement sound service providing system according to the capability of the mobile communication terminal, characterized in that provided by. The method of claim 7, wherein the mobile communication network, An outgoing wireless base station for receiving and transmitting the call from the outgoing mobile communication terminal; When the call is requested from the originating radio base station, information on the originating mobile communication terminal including information on the capability of the originating mobile communication terminal, a telephone number of the originating mobile communication terminal, and information on a ringback tone replacement tone service of the caller. An outgoing mobile telecommunication switching center for generating and forwarding; Receiving information on the outgoing mobile terminal from the outgoing mobile communication switching center and setting up an ISUP call, comprising a telephone number of the incoming mobile communication terminal and information on a ringback tone replacement tone service of the called party. A terminating mobile telecommunication switching station for generating and transmitting information on a ringback tone substitute tone service including information on the originating mobile communication terminal and information on the terminating mobile communication terminal after generating information about the originating mobile communication terminal; And Sound source providing device for identifying and providing the type of the service by receiving and analyzing information on the ringback tone substitute sound service from the terminating mobile communication switching center Multimedia ringback tone replacement sound service providing system according to the capability of the mobile communication terminal comprising a. An apparatus for providing a ringback tone replacement sound service to a calling mobile terminal requesting a call from a mobile communication network to an incoming mobile terminal, Information about an outgoing mobile communication terminal including a phone number of the outgoing mobile communication terminal, information on a ringback tone replacement tone service of the caller, and information on the capability of the outgoing mobile communication terminal, and a phone number of the incoming mobile communication terminal; According to the capability of the mobile terminal, receiving and receiving information on the called mobile terminal including information on the ringback tone replacement tone service of the called party, identifying and providing the type of service to be provided to the calling mobile terminal. Multimedia ringback tone substitute sound service providing apparatus. The method of claim 14, wherein the type of service includes: A multimedia ringback tone replacement sound service for providing an audio codec sound source encoded as an audio codec as the sound source, a ringback tone replacement sound service for providing an audio codec sound source encoded as a sound codec as the sound source, and a conventional ringback tone Apparatus for providing a multimedia ringback tone replacement sound service according to the capability of a mobile communication terminal, characterized in that it comprises one or more of the ringback tone service provided.

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