WO2007119894A1 - Method and system of ring back tone service using multimedia codec - Google Patents

Method and system of ring back tone service using multimedia codec Download PDF

Info

Publication number
WO2007119894A1
WO2007119894A1 PCT/KR2006/001438 KR2006001438W WO2007119894A1 WO 2007119894 A1 WO2007119894 A1 WO 2007119894A1 KR 2006001438 W KR2006001438 W KR 2006001438W WO 2007119894 A1 WO2007119894 A1 WO 2007119894A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound source
source data
back tone
ring back
tone service
Prior art date
Application number
PCT/KR2006/001438
Other languages
French (fr)
Inventor
Seong-Soo Park
Dong-Hahk Lee
Won-Suk Chung
Seong-Keun Kim
Joo-Sik Lee
Se-Hyun Oh
Myung-Sung Lee
Original Assignee
Sk Telecom Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sk Telecom Co., Ltd. filed Critical Sk Telecom Co., Ltd.
Priority to PCT/KR2006/001438 priority Critical patent/WO2007119894A1/en
Publication of WO2007119894A1 publication Critical patent/WO2007119894A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42017—Customized ring-back tones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • H04M7/0072—Speech codec negotiation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/50—Telephonic communication in combination with video communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/18—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices

Definitions

  • the present invention relates to a method of processing and transmitting a sound source that is able to effectively transmit a sound source from a sound source provision unit to a mobile switching center in providing a ring back tone using a multimedia codec.
  • EVRC Enhanced Variable Rate Code
  • Variable Rate Code deteriorates the music quality owing to a variable transmission ratio coding error in providing the music service no having the silent interval at all.
  • methods minimizing the damage of sound source generated by a voice codec are adopted, according as real time music providers extract and then amend the sound source to fit for the EVRC codec.
  • the sound source amendment depends on the preprocessing considering the characteristics of the EVRC codec or the handwork of sound engineers. These operations can complement the music service quality through the EVRC codec as the level corresponding to voice quality, but it is difficult to improve the music service quality considerably.
  • a mobile terminal to process a ring back tone interval data by embodying the decoding function of a multimedia audio codec and si- multaneously transmit the data delivered from a sound source providing server to a mobile terminal by utilizing the vocoder bypassing function used in case of the voice call among mobile terminals in order to minimize the node alteration of a mobile terminal network.
  • FlG. 1 illustrates a block diagram of a ring back tone service system
  • FlG. 2 illustrates a call flowchart of a ring back tone service using a multimedia codec
  • FlG. 3 illustrates a block diagram of sound source transmission in a conventional ring back tone service
  • FlG. 4 illustrates a block diagram of sound source transmission in a multimedia ring back tone service
  • FlG. 5 is a view showing the construction of a bypass frame
  • FlG. 6 illustrates a flowchart of sound source process in a ring back tone service device having a real time multimedia codec
  • FlG. 7 illustrates a flowchart of sound source process in a ring back tone service device having a non-real time multimedia codec.
  • FlG. 1 illustrates a block diagram of a ring back tone service system.
  • the Location Register 100 has information corresponding to a subscriber and communicates with a Mobile Switching Center (O_MSC 102, T_MSC 103) through a Signaling Transfer Protocol (STP)-based No. 7 network 101.
  • the MSCs 102 and 103 are connected to a sound source provision unit 105, which stores sound sources, through a gateway 104.
  • the MSCs 102 and 103 are connected to a Base Station Controller 106 to support the access for mobile terminal communication.
  • the BSC 106 communicates with a user terminal through a Base Transceiver System 107 and plays a role in controlling a vocoder corresponding to resource assignment and voice call channel.
  • the sound source provision unit 105 is connected to a subscriber DB 109 and a sound source provision control server 110 through an internet 108.
  • the HLR 100 has all functions as a conventional network component, has a function of storing information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105, and additionally includes codec information which an originating terminal wants to use for the ring back tone service.
  • the additional codec information is preset and stored as additional service subscription information of the terminating subscriber profile.
  • the MSCs 102 and 103 have all functions as the conventional network components, have a function of storing information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105 while communicating with the HLR 100 at the time of registering the location of the terminating subscriber, and additionally have functions of receiving a sound source for a ring back tone provision from the sound source provision unit 105 on the basis of the information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105 when a call connection to the terminating subscriber is requested and then providing the received sound source to a corresponding originating subscriber as the form of a ring back tone.
  • the originating MSCs 102 and 103 receives codec information to be used as a ring back tone from an originating terminal through the communication with the HLR 100, and have to provide the sound source provision unit 105 with codec information which a user wishes to use in a ring back tone service through the terminating MSCs 102 and 103.
  • the sound source provision unit 105 stores a variety of sound source in order to fit for all types of codec which a user terminal is able to use in a ring back tone, and is characterized in that it is connected to the MSCs 102 and 103 through the gateway 104, thereby to provide a sound source corresponding to a type of codec requested by the MSCs 102 and 103.
  • the sound source provision control server 110 has a function of communicating with the sound source provision unit 105 through the internet 108, and thereby to transmit a corresponding sound source to the MSCs 102 and 103 on the basis of codec information for the requested ring back tone service by adding a type of ring back tone which the sound source provision unit 105 has to provide to the MSCs 102 and 103 to a function provided in a conventional ring back tone service such as identification information of terminating subscribers requested to connect calls, identification information of originating subscribers corresponding thereto and/or time slot information when call connections are requested.
  • the web server 112 is connected to the sound source provision unit 105 or the sound source provision control server 110 through the internet network 108 to add the stored sound source to the sound source provision unit 105, or changes information (specific originating subscriber, originating group, call originating time slot, etc.) required to specify a sound source by the sound source provision control server 110 and a sound source code corresponding thereto.
  • Such an addition and change function can be performed by the subscriber through a web page or a wireless internet service screen using a mobile terminal provided from the web server 112.
  • the ring back tone service for supporting the multimedia codec in accordance with the present invention is able to provide a music service to a voice call channel by a mobile terminal using a multimedia codec (namely, AAC codec) except for the EVRC codec, has to be presupposed in the present invention.
  • a multimedia codec namely, AAC codec
  • FIG. 2 illustrates a call flowchart of a ring back tone service using a multimedia codec.
  • a ring back tone service request signal is transmitted to a ring back tone service device 205 by the MSCs 203 and 204 on which a terminating subscriber is located.
  • the ring back tone service device 205 stores and processes a sound source in order to fit the sound source data for the multimedia codec used in the originating terminal 201 and then transmits the same to the originating terminal 201.
  • a vocoder of a BSC 202 or MSCs 203 and 204 cannot support a multimedia because of a vocoder for the conventional voice call.
  • the sound source previously encoded as a multimedia codec at the ring back tone service device 205 is transmitted to a mobile terminal network, and the vocoder of the BSC 202 or the MSCs 203 and 204 bypasses the same to a user terminal.
  • the user terminal 201 reproduces the terminated sound source through the multimedia codec instead of a voice codec.
  • a terminating MSC notices a call termination to an originating part and simultaneously requests a ring back tone service cancellation to the ring back tone service device 205.
  • FIG. 3 illustrates a block diagram of sound source transmission in a conventional ring back tone service.
  • the ring back tone service device 303 has to encode a sound source to be used at a mobile terminal 301 to fit the same for a multimedia codec. Because a conventional ring back tone service used a voice vocoder 302 of a mobile terminal, the ring back tone service device 303 simply stores only a sound source data having a PCM type received from a contents provider 304.
  • the ring back tone service device 303 or the contents provider 304 have to directly perform the encoding of the sound source.
  • the ring back tone service device 303 must adjust a data format in case of transmitting data to a mobile terminal system.
  • FlG. 4 illustrates a block diagram of sound source transmission in a multimedia ring back tone service.
  • a ring back tone service device 403 has to receive a PCM sound source data from a contents provider 404, generate a sound source data for a multimedia codec from the same through a multimedia encoder, and generate a data having a specific format which can be transmitted.
  • the ring back tone service device contains a real time multimedia encoder
  • the ring back tone service device store a sound source as a PCM type and then can transmit the same in a real time in the case that the request of a mobile terminal system exists.
  • the ring back tone service device contains a non-real time multimedia encoder
  • the ring back tone service device converts a sound source into a multimedia codec format instead of a PCM type and store the same, and then can transmit the stored sound source without a separate coding in the case that the request of a mobile terminal system exists.
  • FlG. 5 is a view showing the construction of a bypass frame. It is desirable that a sound source data encoded for fitting for a multimedia codec is transmitted to perform the vocoder bypass function in a mobile terminal system. In order to perform the method, the sound source data has to be transmitted as the depicted frame format.
  • a message header stores a vocoder type and a frame order number.
  • An encoding packet includes a data rate, a packet data and dummy information. The data rate has to be transmitted as full rate, and 17 bit data information and 101 bit dummy information are transmitted at the time.
  • FlG. 6 illustrates a flowchart of sound source process in a ring back tone service device having a real time multimedia codec.
  • the ring back tone service device stores a PCM sound source received from the contents provider.
  • the ring back tone service device searches a corresponding sound source and then encodes the same using a multimedia codec in the case that the ring back tone service request is received from a mobile terminal system.
  • the sound source encoded as a multimedia frame unit is restructured as a frame for the bypass mode process.
  • the sound source data is divided as 171 bit unit, additional information thereof is added, and then the same is transmitted to a mobile terminal system at 20ms intervals.
  • FlG. 7 illustrates a flowchart of sound source process in a ring back tone service device having a non-real time multimedia codec.
  • a multimedia encoding of a PCM sound source is performed, is converted into the frame for the bypass mode process and then is stored.
  • the ring back tone service device searches a corresponding sound source and then transmits the same to a mobile terminal system at 20ms intervals in the case that the ring back tone service request is received from a mobile terminal system.
  • the present invention is capable of improving the ring back tone service quality, minimizing the alteration of common mobile terminal network, and providing the ring back tone service having the improved quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a method and system of ring back tone service using multimedia codec. The method comprises the steps of: transmitting a call originating request signal to a mobile switching center by an originating terminal having a codec; the mobile switching center transmitting a ring back tone service request signal to a ring back tone service device in response to the call originating request signal; the ring back tone service device processing a sound source data provided from a sound source data provision unit in order to fit the sound source data for the codec used in the originating terminal and then transmitting the same to the originating terminal; the mobile switching center or a vocoder of a controller bypassing the processed sound source data to the originating terminal; and the originating terminal reproducing the processed sound source data through the codec.

Description

Description
METHOD AND SYSTEM OF RING BACK TONE SERVICE USING MULTIMEDIA CODEC
Technical Field
[1] The present invention relates to a method of processing and transmitting a sound source that is able to effectively transmit a sound source from a sound source provision unit to a mobile switching center in providing a ring back tone using a multimedia codec. Background Art
[2] Most mobile terminal uses a voice codec having variable transmission ratio such as an EVRC (Enhanced Variable Rate Code) for the optimization of a wireless channel and the efficiency of a voice call. These voice codec maximized channel efficiency through the detection of pronunciation and silent interval and the generation and mapping appropriate code book. Disclosure of Invention Technical Problem
[3] But the voice codec having variable transmission ratio such as an EVRC (Enhanced
Variable Rate Code) deteriorates the music quality owing to a variable transmission ratio coding error in providing the music service no having the silent interval at all. In order to solve the problem, methods minimizing the damage of sound source generated by a voice codec are adopted, according as real time music providers extract and then amend the sound source to fit for the EVRC codec. The sound source amendment depends on the preprocessing considering the characteristics of the EVRC codec or the handwork of sound engineers. These operations can complement the music service quality through the EVRC codec as the level corresponding to voice quality, but it is difficult to improve the music service quality considerably. Technical Solution
[4] In order to overcome the problem, methods utilizing a multimedia codec used in the download service are adopted, but it is necessary that additional separate development is needed to embody the methods in a voice call channel. In addition, because the function alteration of the conventional mobile terminal network is requested to apply the methods on a mobile terminal network service, it is desirable to minimize the alteration of common mobile terminal network and simultaneously provide service thereof.
[5] Accordingly, it is preferable to enable a mobile terminal to process a ring back tone interval data by embodying the decoding function of a multimedia audio codec and si- multaneously transmit the data delivered from a sound source providing server to a mobile terminal by utilizing the vocoder bypassing function used in case of the voice call among mobile terminals in order to minimize the node alteration of a mobile terminal network. Brief Description of the Drawings
[6] These and/or other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings of which:
[7] FlG. 1 illustrates a block diagram of a ring back tone service system;
[8] FlG. 2 illustrates a call flowchart of a ring back tone service using a multimedia codec;
[9] FlG. 3 illustrates a block diagram of sound source transmission in a conventional ring back tone service;
[10] FlG. 4 illustrates a block diagram of sound source transmission in a multimedia ring back tone service;
[11] FlG. 5 is a view showing the construction of a bypass frame;
[12] FlG. 6 illustrates a flowchart of sound source process in a ring back tone service device having a real time multimedia codec; and
[13] FlG. 7 illustrates a flowchart of sound source process in a ring back tone service device having a non-real time multimedia codec.
[14] The following Examples are given for the purpose of illustration only and are not intended to limit the scope of this invention. Best Mode for Carrying Out the Invention
[15] Hereinafter, preferable embodiments according to the present invention will be described with reference to the accompanying drawings. Here, when one element is connected to another element, one element may be not only directly connected to another element but also indirectly connected to another element via another element. Further, irrelative elements are omitted for clarity. Also, like reference numerals refer to like elements throughout. Details and improved items in accordance with the present invention are disclosed in independent claims.
[16] FlG. 1 illustrates a block diagram of a ring back tone service system. A Home
Location Register 100 has information corresponding to a subscriber and communicates with a Mobile Switching Center (O_MSC 102, T_MSC 103) through a Signaling Transfer Protocol (STP)-based No. 7 network 101. The MSCs 102 and 103 are connected to a sound source provision unit 105, which stores sound sources, through a gateway 104. In addition, the MSCs 102 and 103 are connected to a Base Station Controller 106 to support the access for mobile terminal communication. The BSC 106 communicates with a user terminal through a Base Transceiver System 107 and plays a role in controlling a vocoder corresponding to resource assignment and voice call channel. The sound source provision unit 105 is connected to a subscriber DB 109 and a sound source provision control server 110 through an internet 108.
[17] The HLR 100 has all functions as a conventional network component, has a function of storing information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105, and additionally includes codec information which an originating terminal wants to use for the ring back tone service. The additional codec information is preset and stored as additional service subscription information of the terminating subscriber profile.
[18] The MSCs 102 and 103 have all functions as the conventional network components, have a function of storing information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105 while communicating with the HLR 100 at the time of registering the location of the terminating subscriber, and additionally have functions of receiving a sound source for a ring back tone provision from the sound source provision unit 105 on the basis of the information indicating whether a ring back tone is substituted and information for performing routing to the sound source provision unit 105 when a call connection to the terminating subscriber is requested and then providing the received sound source to a corresponding originating subscriber as the form of a ring back tone. Herein, the originating MSCs 102 and 103 receives codec information to be used as a ring back tone from an originating terminal through the communication with the HLR 100, and have to provide the sound source provision unit 105 with codec information which a user wishes to use in a ring back tone service through the terminating MSCs 102 and 103.
[19] The sound source provision unit 105 stores a variety of sound source in order to fit for all types of codec which a user terminal is able to use in a ring back tone, and is characterized in that it is connected to the MSCs 102 and 103 through the gateway 104, thereby to provide a sound source corresponding to a type of codec requested by the MSCs 102 and 103.
[20] The sound source provision control server 110 has a function of communicating with the sound source provision unit 105 through the internet 108, and thereby to transmit a corresponding sound source to the MSCs 102 and 103 on the basis of codec information for the requested ring back tone service by adding a type of ring back tone which the sound source provision unit 105 has to provide to the MSCs 102 and 103 to a function provided in a conventional ring back tone service such as identification information of terminating subscribers requested to connect calls, identification information of originating subscribers corresponding thereto and/or time slot information when call connections are requested.
[21] The web server 112 is connected to the sound source provision unit 105 or the sound source provision control server 110 through the internet network 108 to add the stored sound source to the sound source provision unit 105, or changes information (specific originating subscriber, originating group, call originating time slot, etc.) required to specify a sound source by the sound source provision control server 110 and a sound source code corresponding thereto. Such an addition and change function can be performed by the subscriber through a web page or a wireless internet service screen using a mobile terminal provided from the web server 112.
[22] The fact that the ring back tone service for supporting the multimedia codec in accordance with the present invention is able to provide a music service to a voice call channel by a mobile terminal using a multimedia codec (namely, AAC codec) except for the EVRC codec, has to be presupposed in the present invention. In addition, the fact that the BSC 106 of a mobile terminal or the MSCs 102 and 103 dos not spontaneously provide a multimedia codec using an H/W or an S/W, has to be presupposed in depicted exemplary embodiment.
[23] FIG. 2 illustrates a call flowchart of a ring back tone service using a multimedia codec. If an originating terminal having a multimedia codec requests a call originating, a ring back tone service request signal is transmitted to a ring back tone service device 205 by the MSCs 203 and 204 on which a terminating subscriber is located. The ring back tone service device 205 stores and processes a sound source in order to fit the sound source data for the multimedia codec used in the originating terminal 201 and then transmits the same to the originating terminal 201. Herein, a vocoder of a BSC 202 or MSCs 203 and 204 cannot support a multimedia because of a vocoder for the conventional voice call. Accordingly, the sound source previously encoded as a multimedia codec at the ring back tone service device 205 is transmitted to a mobile terminal network, and the vocoder of the BSC 202 or the MSCs 203 and 204 bypasses the same to a user terminal. The user terminal 201 reproduces the terminated sound source through the multimedia codec instead of a voice codec. After that, a terminating MSC notices a call termination to an originating part and simultaneously requests a ring back tone service cancellation to the ring back tone service device 205.
[24] FIG. 3 illustrates a block diagram of sound source transmission in a conventional ring back tone service. In order to embody the above-mentioned sound source process method, the ring back tone service device 303 has to encode a sound source to be used at a mobile terminal 301 to fit the same for a multimedia codec. Because a conventional ring back tone service used a voice vocoder 302 of a mobile terminal, the ring back tone service device 303 simply stores only a sound source data having a PCM type received from a contents provider 304. However, because a vocoder 302 of a mobile terminal cannot be used in a ring back tone service using a multimedia codec, the ring back tone service device 303 or the contents provider 304 have to directly perform the encoding of the sound source. In addition, because the vocoder bypass function of a mobile terminal system utilized in a voice call among mobile terminals has to be used, the ring back tone service device 303 must adjust a data format in case of transmitting data to a mobile terminal system.
[25] FlG. 4 illustrates a block diagram of sound source transmission in a multimedia ring back tone service. As depicted in FlG. 4, a ring back tone service device 403 has to receive a PCM sound source data from a contents provider 404, generate a sound source data for a multimedia codec from the same through a multimedia encoder, and generate a data having a specific format which can be transmitted.
[26] There are two methods storing a sound source in the ring back tone service device.
First of all, if the ring back tone service device contains a real time multimedia encoder, the ring back tone service device store a sound source as a PCM type and then can transmit the same in a real time in the case that the request of a mobile terminal system exists. In addition, the ring back tone service device contains a non-real time multimedia encoder, the ring back tone service device converts a sound source into a multimedia codec format instead of a PCM type and store the same, and then can transmit the stored sound source without a separate coding in the case that the request of a mobile terminal system exists.
[27] FlG. 5 is a view showing the construction of a bypass frame. It is desirable that a sound source data encoded for fitting for a multimedia codec is transmitted to perform the vocoder bypass function in a mobile terminal system. In order to perform the method, the sound source data has to be transmitted as the depicted frame format. A message header stores a vocoder type and a frame order number. An encoding packet includes a data rate, a packet data and dummy information. The data rate has to be transmitted as full rate, and 17 bit data information and 101 bit dummy information are transmitted at the time.
[28] FlG. 6 illustrates a flowchart of sound source process in a ring back tone service device having a real time multimedia codec. The ring back tone service device stores a PCM sound source received from the contents provider. The ring back tone service device searches a corresponding sound source and then encodes the same using a multimedia codec in the case that the ring back tone service request is received from a mobile terminal system. The sound source encoded as a multimedia frame unit is restructured as a frame for the bypass mode process. Herein, the sound source data is divided as 171 bit unit, additional information thereof is added, and then the same is transmitted to a mobile terminal system at 20ms intervals.
[29] FlG. 7 illustrates a flowchart of sound source process in a ring back tone service device having a non-real time multimedia codec. There is the difference between FlG. 6 and FlG. 7 in that a multimedia encoding of a PCM sound source is performed, is converted into the frame for the bypass mode process and then is stored. The ring back tone service device searches a corresponding sound source and then transmits the same to a mobile terminal system at 20ms intervals in the case that the ring back tone service request is received from a mobile terminal system.
[30] As described above, the present invention is capable of improving the ring back tone service quality, minimizing the alteration of common mobile terminal network, and providing the ring back tone service having the improved quality.
[31] Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes might be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

Claims
[1] A ring back tone service method, comprising the steps of:
(a) transmitting a call originating request signal to a mobile switching center by an originating terminal having a codec;
(b) the mobile switching center transmitting a ring back tone service request signal to a ring back tone service device in response to the call originating request signal;
(c) the ring back tone service device processing a sound source data provided from a sound source data provision unit in order to fit the sound source data for the codec used in the originating terminal and then transmitting the same to the originating terminal;
(d) a vocoder of the mobile switching center or a controller bypassing the processed sound source data to the originating terminal; and
(e) the originating terminal reproducing the processed sound source data through the codec.
[2] The method as claimed in claim 1, wherein the codec is a multimedia codec.
[3] The method as claimed in claim 1, further comprising the step (f) of the mobile switching center transmitting a ring back tone cancellation request signal to the ring back tone service device in the case that a call termination is performed at the terminating terminal.
[4] The method as claimed in claims 1 or 2, wherein the step (c) is performed by the ring back tone service device encoding the sound source data as a multimedia sound source data.
[5] The method as claimed in claim 4, wherein the ring back tone service device encodes the sound source data through an encoder of a multimedia codec embodied as software or hardware.
[6] The method as claimed in claim 4, wherein the ring back tone service device restructures the encoded sound source data as a bypass frame unit.
[7] The method as claimed in claim 6, wherein the bypass frame unit is restructured as a 20ms unit frame having the input of the encoded frame.
[8] The method as claimed in claim 1, wherein the sound source data provision unit of the step (c) processes the sound source data.
[9] A ring back tone service method, comprising the steps of:
(A) the ring back tone service device processing a sound source data provided from a sound source provision unit in order to fit the sound source data for the codec used in the originating terminal and then transmitting the same to the originating terminal; (B) transmitting a call originating request signal to a mobile switching center by an originating terminal having a codec;
(C) the ring back tone service device transmitting the processed sound source data to the originating terminal in response to the call originating request signal from the mobile switching center;
(D) a vocoder of the mobile switching center or a controller bypassing the sound source data to the originating terminal; and
(E) the originating terminal reproducing the processed sound source data through the codec.
[10] The method as claimed in claim 9, wherein the codec is a multimedia codec.
[11] The method as claimed in claims 9 or 10, further comprising the step (F) of the mobile switching center transmitting a ring back tone cancellation request signal to the ring back tone service device in the case that a call termination is performed at the terminating terminal.
[12] The method as claimed in claims 9 or 10, wherein the step (A) is performed by the ring back tone service device encoding the sound source data as a multimedia sound source data.
[13] The method as claimed in claim 12, wherein the ring back tone service device encodes the sound source data through an encoder of a multimedia codec embodied as software or hardware.
[14] The method as claimed in claim 12, wherein the ring back tone service device restructures the encoded sound source data as a bypass frame unit.
[15] The method as claimed in claim 14, wherein the bypass frame unit is restructured as a 20ms unit frame having the input of the encoded frame.
[16] The method as claimed in claim 9, wherein the sound source data provision unit of the step (A) processes the sound source data.
[17] A ring back tone service system, comprising: an originating terminal for having a codec and transmitting a call originating request signal to a mobile switching center; a mobile switching center for transmitting a ring back tone service request signal to a ring back tone service device in response to the call originating request signal; a ring back tone service device for processing a sound source data provided from a sound source data provision unit in order to fit the sound source data for the codec used in the originating terminal and then transmitting the same to the originating terminal; and a vocoder of a controller or the mobile switching center for bypassing the processed sound source data to the originating terminal.
[18] The system as claimed in claim 17, wherein the codec is a multimedia codec.
[19] The system as claimed in claims 17 or 18, wherein the ring back tone service device encodes the sound source data as a multimedia sound source data. [20] The system as claimed in claim 19, wherein the ring back tone service device includes a multimedia codec embodied as software or hardware. [21] The system as claimed in claims 17 or 18, wherein the sound source data provision unit processes a sound source data in order to fit the sound source data for the codec used in the originating terminal. [22] The system as claimed in claims 17 or 18, wherein the ring back tone service device restructures the encoded sound source data as a bypass frame unit. [23] The system as claimed in claim 22, wherein the bypass frame unit is restructured as a 20ms unit frame having the input of the encoded frame.
PCT/KR2006/001438 2006-04-18 2006-04-18 Method and system of ring back tone service using multimedia codec WO2007119894A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/001438 WO2007119894A1 (en) 2006-04-18 2006-04-18 Method and system of ring back tone service using multimedia codec

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/001438 WO2007119894A1 (en) 2006-04-18 2006-04-18 Method and system of ring back tone service using multimedia codec

Publications (1)

Publication Number Publication Date
WO2007119894A1 true WO2007119894A1 (en) 2007-10-25

Family

ID=38609643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/001438 WO2007119894A1 (en) 2006-04-18 2006-04-18 Method and system of ring back tone service using multimedia codec

Country Status (1)

Country Link
WO (1) WO2007119894A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663759A (en) * 1984-04-25 1987-05-05 Hitachi, Ltd. Ring back tone transmission system
WO2005004453A1 (en) * 2003-07-01 2005-01-13 Soft Teleware, Inc. Ring-back tone service system and the method
US20050117726A1 (en) * 2003-11-10 2005-06-02 Dement Jeffrey M. Methods and apparatus for implementing customized ringback

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663759A (en) * 1984-04-25 1987-05-05 Hitachi, Ltd. Ring back tone transmission system
WO2005004453A1 (en) * 2003-07-01 2005-01-13 Soft Teleware, Inc. Ring-back tone service system and the method
US20050117726A1 (en) * 2003-11-10 2005-06-02 Dement Jeffrey M. Methods and apparatus for implementing customized ringback

Similar Documents

Publication Publication Date Title
US7493125B2 (en) Methods and apparatus for providing location enabled ring tones or ring backs
US7912510B2 (en) Terminal for multimedia ring back tone service and method for controlling terminal
JP4782847B2 (en) Wideband codec negotiation
EP1762106B1 (en) Method and system for providing multimedia ring back tone service by using call-side switching center
CN101023686B (en) Method and system for terminal codec setup of multimedia ring back tone service
EP1790151B1 (en) Method and system for providing multimedia ring back tone service by using receiver-side switching center
EP2012514B1 (en) A device and system for realizing the multimedia ring back tone service and a method thereof
JP4034187B2 (en) Optimize voice over IP priority and bandwidth requirements
US8320530B2 (en) Method, apparatus and system for realizing a multimedia call
US8085906B2 (en) Method, system and apparatus for providing alternative multimedia ring back tone substitute service by using intelligent network
KR100566298B1 (en) Method for processing channel coding adaptive type ring-back-tone sound converting of subscriber based ring-back-tone service
KR100413978B1 (en) Apparatus and method for transmitting and receiving signals between different networks
KR20050019344A (en) Method for improving the quality of sound using dual codec of subscriber based ring-back-tone service
KR100688890B1 (en) Method and system of ring back tone service using multimedia codec
WO2007100178A1 (en) Method, system and apparatus for providing multimedia ring back tone alternative service according to capability of mobile communication terminal
WO2007119894A1 (en) Method and system of ring back tone service using multimedia codec
KR100688889B1 (en) Method and apparatus of identifying data using codec imformation
US7474673B1 (en) Recording and using transcoding information
TWI387960B (en) Method and system of ring back tone service using multimedia codec
ES2539641T3 (en) Method for continuous stream transmission of compressed digital audio over circuit switched voice networks
KR100758808B1 (en) ARS Service Method And System
KR20040060230A (en) System for suppling multimedia communication service and method thereof
JP2011250052A (en) Call originating method and telephone system, returning ring-back content to calling terminal at call connection

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06757492

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC OF 030209

122 Ep: pct application non-entry in european phase

Ref document number: 06757492

Country of ref document: EP

Kind code of ref document: A1