KR101036144B1 - Method for output of ring back tone during image communication in portable communication terminal - Google Patents

Abstract

A method for outputting a ringback tone during a video call in a mobile communication terminal, the method comprising: allocating and setting a traffic channel from a network during a video call, and checking whether an alarm message is received from the network; When the alert message is received, checking whether traffic data is received from the network through the traffic channel, and when receiving the traffic data, extracting ringback tone data from the traffic data and reproducing it until a call path is established. Including, there is an advantage that can receive various services of network operators by lowering the same ringback tone from the network to the terminal through the traffic channel.

Terminal, ring back tone, ring back tone, video call, video call

Description

METHOOD FOR OUTPUT OF RING BACK TONE DURING IMAGE COMMUNICATION IN PORTABLE COMMUNICATION TERMINAL}

1 is a diagram showing the configuration of a mobile communication terminal according to the present invention;

2 is a diagram illustrating a procedure for outputting a ringback tone during a video call in a mobile communication terminal according to an embodiment of the present invention;

3 is a diagram illustrating a procedure for sending a ringback tone to a terminal during a video call in a base station according to an embodiment of the present invention; and

4 is a diagram illustrating a traffic data format according to an embodiment of the present invention.

The present invention relates to a mobile communication terminal capable of a video call, and more particularly, to a method for outputting a ringback tone during a video call.

The IMT (International Mobile Telecommunications) -2000 system, which is applied as a third generation mobile communication system, is a system for establishing a wireless wireless communication network worldwide so that an unspecified number of people can perform wireless calls worldwide through a mobile phone. Next-generation mobile communication network-based asynchronous wireless communication systems (WCDMA: Wideband CDMA Mobile System) such as IMT-2000 (International Mobile Telecommnication) and Universal Mobile Telecommunication System (UMTS) are multipath fading channels by widening the frequency bandwidth to 5 MHz. Since it can be separated or synthesized into more multipath components, it is possible to improve the reception quality by diversity of the rake time, which is suitable for high-speed data transmission. Thus, not only voice wireless call but also file and video service such as Internet service and video call service can be provided to the user.

On the other hand, in the current wireless communication system, a user can use various multimedia information data transmission services in connection with a wireless Internet communication network, which means that a mobile communication terminal accesses a media content server on a wireless Internet communication network, Not only the ring tone can be downloaded and used selectively, but also a ringback tone coloring sound source can be set for the wireless communication network, so that the sound transmission service can be performed while the call is waiting for the calling party. In other words, when a predetermined caller calls the coloring service subscriber-side mobile communication terminal, the predetermined coloring sound source can be transmitted to the calling party, thereby providing various services according to the setting of the called user. .

However, in the conventional mobile communication terminal, the ringback tone service is possible only during a voice call, and the ringback tone service during the video call is a ringback tone generated by the terminal itself and not heard by the wireless Internet communication network, and is heard by the user. to be. This is a problem that can not be provided during the video call a variety of new coloring sound source that can be provided by the Internet communication network during the voice call.

Accordingly, an object of the present invention is to provide a method for outputting a ringback tone during a video call in a mobile communication terminal.

According to an embodiment of the present invention to achieve the above object, a method for outputting a ringback tone during a video call in the mobile communication terminal, the process of assigning and setting up a traffic channel from the network, and from the network, Checking whether an alerting message is received; checking whether traffic data is received from the network through the traffic channel upon receiving the alerting message; and ringback tone data in the traffic data upon receiving the traffic data. It is characterized in that it comprises the process of extracting and reproducing until the call path is set.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of related known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention.

 Hereinafter, the present invention will be described a method for outputting a ringback tone during a video call in a mobile communication terminal.

1 is a block diagram of a mobile communication terminal capable of a video call according to the present invention. Referring to FIG. 1, a controller (MPU: Micro-Processor Unit) 101 controls the overall operation of the mobile communication terminal. For example, it performs processing and control for voice communication and data communication, and processes a function for outputting ringback tones in a video call in addition to the usual functions. Therefore, in the following description, description regarding the processing and control of the normal control unit 101 is omitted.

The memory 111 may include a program memory, a data memory, and a moving picture memory. The program memory stores microcode and various reference data of a program for processing and control of the controller 101. In particular, the present invention stores a program for outputting ringback tones during video calls. The data memory is a working memory of the controller 101, and stores temporary data generated during execution of various programs. The data memory may include a text buffer for storing text signals input through the keypad 113, an image buffer for storing a video signal generated by the image codec 119, and an audio signal generated by the audio codec 107. It may be provided with audio buffers for storing. The moving picture memory is a memory for storing a moving picture signal.

Key pad 113 is a numeric key buttons of 0 ~ 9, menu button (menu), cancel button (clear), OK button, call button (TALK), end button (END), shooting button, It includes a plurality of function keys such as an internet access button, navigation key (or direction key) buttons (▲ / ▼ / ◀ / ▶), and provides key input data corresponding to a key pressed by the user to the controller 101. The display unit 121 displays status information generated during the operation of the mobile communication terminal, a limited number of characters, a large amount of video and still images, and the like. The display unit 121 may use a color liquid crystal display (LCD).

In addition, the RF unit 105 includes an RF transmitter for upconverting and amplifying a frequency of a transmitted signal, an RF receiver for low noise amplifying a received signal, and downconverting a frequency of the received signal. The data processor 103 includes a transmitter for modulating and encoding the transmitted signal and a receiver for demodulating and decoding the received signal. That is, the data processor 103 may be configured of a modem and a coder-decoder (CODEC). The codec includes a data codec for processing packet data and an audio codec 107 for processing an audio signal such as voice. In particular, the AMR vocoder 123 processes voice data, that is, AMR data, from the traffic data transmitted through the traffic channel, and outputs the AMR vocoder 109 to the audio processor 109. The audio processor 109 reproduces a received audio signal output from the audio codec 107 of the data processor 103 or transmits a transmission audio signal generated from a microphone to the audio codec 107 of the data processor 103. Perform the function of sending.

The camera unit 115 includes a camera sensor that converts an optical signal detected at the time of image capturing into an electrical signal, and a signal processor which converts an analog image signal captured by the camera sensor into digital data. The camera sensor may be a charge coupled device (CCD) sensor, and the signal processor may be a digital signal processor (DSP).

The image processor 117 generates screen data for displaying an image signal output from the camera unit 115. The image processing unit 117 processes the image signal output from the camera unit 115 in units of frames, and outputs the frame image data according to the characteristics and size of the display unit 121. In addition, the image processing unit 117 includes an image codec 119, and the image codec 119 performs a function of coding an image signal in a set manner or decoding the coded frame image data into original frame image data. do. The image processor 117 generates and plays a video signal according to a mode set under the control of the controller 101.

2 illustrates a procedure for outputting a ringback tone during a video call in a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 2, the controller 101 determines whether an image call key is input in step 201. When the video call key is input, the controller 101 proceeds to step 203 to access the network. In this case, the network access is performed by the terminal requesting a network to allocate a signal channel through a random access channel (RACH), and when the network allocates a channel, the terminal configures the channel. The signal channel is a channel for signaling, and the signaling refers to the exchange of information related to connection, release, and control of a call or information related to network management (non-voice information). The request for allocation of the signal channel is performed by the terminal transmitting a Radio Resource Control (RRC) access request message to the network. In this case, the network receiving the radio resource control access request message transmits terminal basic information, transmission channel information, physical channel information, and the like to the terminal according to an expected transmission capacity, and the terminal receiving the information receives the network. The assigned signal channel may be set by setting a lower layer according to the instruction of. Here, the radio resource control (RRC) is a protocol existing in the control plane of the L3 layer of wideband CDMA (WCDMA), and receives information from protocols of each layer and distributes resources (eg, channels). do.

In step 205, the controller 101 sets an initial call. In the initial call setup, the controller 101 transmits a type of a call such as voice or video to the network through a call setup message, and determines whether the network that has received the call setup message can process the call. By sending a message indicating the start of call establishment (call proceeding) to the terminal.

In step 207, the controller 101 sets a traffic channel. Here, the traffic channel may be allocated by the terminal receiving a radio bearer (RB) configuration message from the network and configuring the same. The traffic channel is a channel used when transmitting user information (data, voice, video), and is generally used when an actual call is performed after call processing is normally performed. Here, the radio bearer configuration message includes configuration information of a transport channel and a physical channel.

In step 209, the controller 101 checks whether an alarming message is received from the network. The alert message is a message informing that the called terminal is ringing, and the message is a signal message transmitted to the network by the called terminal and to the calling terminal by the network. When the alert message is received, the controller 101 activates an AMR vocoder 123 in step 211. The AMR vocoder 123 is a voice coder developed only for human voice. In the present invention, the AMR vocoder 123 plays a ringback tone transmitted from a network. There is a progress indicator in the alerting message, and the terminal itself may determine whether to create and play a ringback tone or to play a ringback tone that is lowered from the network. In the present invention, the progress indicator (Progress Indicator) is set in a manner to reproduce the ringback tone released from the network and sent to the terminal from the network. In this case, the progress indicator may be loaded on a call proceeding message in addition to an alerting message. If the alerting message is omitted and the progress indicator comes down in the Call Proceeding message, the operation is the same as when the alerting message is received.

In step 213, the controller 101 checks whether traffic data is transmitted from the network. The format of the traffic data is hereinafter referred to the description of FIG. 4. When the traffic data is received, the controller 101 proceeds to step 215 to extract ringback tone data, that is, AMR data from the traffic data, and inserts the AMR data into the input of the AMR vocoder 123 to make a video call. Before the call is made, the calling party hears the ringback tone set by the called party, that is, coloring. The ringback tone data may be any one of data of an adaptive multi-rate (AMR), pulse coded modulation (PCM), and advanced audio coding (AAC) format. Thereafter, the controller 101 checks whether the connection with the called terminal is established in step 217, and if the connection with the called terminal is confirmed, the controller 101 proceeds to step 219 to realize a call, according to the present invention. To exit.

3 is a diagram illustrating a procedure for sending a ringback tone to a terminal during a video call in the base station according to an embodiment of the present invention.

Referring to FIG. 3, the base station accepts an access request of the terminal in step 301 and proceeds to step 303 to allocate a signal channel requested by the terminal. In this case, the signal channel allocation may include terminal basic information and a transmission channel according to the expected transmission capacity after the base station receiving the radio resource control access request message of the terminal accesses the radio resource control (RRC) and allocates a channel. Information, physical channel information and the like to the terminal. Thereafter, when the signal channel setting of the terminal is completed, the base station proceeds to step 305 to set an initial call according to the request of the terminal. The initial call setup may be performed by the base station receiving the call setup message of the terminal, whether the base station is capable of processing, and sending a message informing the call proceeding of the requested call setup to the terminal. Is done.

 In step 307, the base station allocates a traffic channel to the terminal. Here, the traffic channel is a dedicated channel (DCH). The traffic channel allocation is performed by the base station transmitting a radio bearer (RB) configuration message to the terminal, and the terminal configures it. In step 309, the base station determines whether an alerting message is received from the called terminal. When the alert message is received, the base station transmits the alert message to the calling terminal in step 311 to inform the calling terminal that the ringing to the called terminal.

After transmitting the alert message to the terminal, the base station proceeds to step 313 to extract and compress ringback tone (coloring) information preset by the called terminal. In step 315, the base station converts the ringback tone information into AMR voice data of traffic data and transmits the ringback tone information to the terminal using a traffic channel. The calling terminal extracts AMR voice data, that is, ringback tone data, from the transmitted traffic data and inputs it into an input terminal of the vocoder 123, so that the calling user can hear the ringback tone designated by the other party. Here, the ring back tone service using the traffic channel uses the fact that no data flows on the traffic channel because H.324M, which is a video call protocol, is not set when the receiver terminal is ringing. Therefore, it is an object of the present invention to allow a caller to listen to a ringback tone set by a called user by dropping the ringback tone generated by the terminal itself during a video call to the terminal from the network in the same manner as a voice call. In step 317, the base station determines whether a call is connected between terminals, and proceeds to step 319 to end the algorithm according to the present invention.

4 is a diagram illustrating a traffic data format according to an embodiment of the present invention.

Referring to FIG. 4, the traffic channel for which the ringback tone is descended is 12.2 Kbps 401 for a voice call and 64 Kbps 403 and 405 for a video call. In other words, in case of a voice call, 12.2Kbps AMR data (maximum 31 bytes / 20ms) is generated and transmitted on the network every 20ms, and in case of a video call, 64Kbps data (maximum 160 bytes / 20ms) is generated every 20ms. Send and receive The first 31 bytes of the 160 bytes / 20 ms of traffic data are used as voice data 403 in AMR format, and the rest are filled with dummy data 405. That is, one AMR data is transmitted every 20 ms. Since both voice calls and video calls use 20 ms transmission time interval (TTI), one AMR data 401 and 403 is transmitted every 20 ms.

The AMR format type is defined in the 3GPP specification from 0 to 15, the maximum size is 31 bytes, and is variably selected according to the length of voice data 401 and 403 to be transmitted. The format of the AMR data 401 and 403 includes a 4-bit frame type part, an AMR voice data, and a bit stuffing part. In the present invention, the terminal analyzes the AMR format type starting from 1 byte of the traffic data received at 160 bytes / 20 ms rate, extracts the length of the AMR data, and receives the data 403 corresponding to the size. The remainder 405 is then discarded. The extracted AMR data 403 is transmitted to the vocoder 123 in the same manner as in the case of a voice call to reproduce the sound.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention has the advantage of receiving various services of network operators by lowering the same voice data, that is, the ringback tone, from the network to the terminal through a traffic channel during a video call. In other words, by extending the service range of the conventional ringback tone, that is, the ringback tone provided by the terminal itself to the network, there is an advantage that a variety of new services used in the existing voice call can be used in the video call.

Claims (9)

A method for outputting a ringback tone during a video call in a mobile communication terminal, When a video call is connected, the process of assigning and setting up a traffic channel from the network, Checking whether an alerting message is received from the network; When receiving the alert message, checking whether traffic data is received from the network through the traffic channel; And upon receiving the traffic data, extracting ringback tone data from the traffic data and reproducing the data until a call path is established. The method of claim 1, The ring back tone data is any one of data of an adaptive multi-rate (AMR), pulse coded modulation (PCM), and advanced audio coding (AAC) format. The method of claim 1, Wherein the traffic channel is a dedicated channel (DCH). A method for transmitting a ringback tone from a base station to a terminal during a video call, Allocating a traffic channel to the terminal when the terminal makes a video call request; Receiving an alert message from a called terminal and transmitting the alert message to the terminal; Generating ringback tone data by compressing coloring information set by the called terminal; And transmitting the traffic data including the generated ring back tone data to the terminal through the traffic channel. The method of claim 4, wherein The ring back tone data is any one of data of an adaptive multi-rate (AMR), pulse coded modulation (PCM), and advanced audio coding (AAC) format. The method of claim 4, wherein Wherein the traffic channel is a dedicated channel (DCH). A method for outputting a ringback tone during a video call in a mobile communication terminal, When the terminal requests a video call, the terminal assigns and sets a traffic channel from a network; Receiving, by the network, an alerting message from the called terminal and transmitting the alerting message to the terminal, the terminal receiving the alerting message; Generating, by the network, ringback tone data by compressing coloring information set by a called terminal; Transmitting, by the network, the traffic data including the generated ringback tone data to the terminal through the traffic channel; Checking, by the terminal, whether the traffic data is received from the network through the traffic channel; And extracting, by the terminal, the ringback tone data from the traffic data and playing the data until a call path is established. The method of claim 7, wherein The ring back tone data is characterized in that any one of the data of the Adaptive Multi-Rate (AMR), Pulse Coded Modulation (PCM), Advanced Audio Coding (AAC) format. The method of claim 7, wherein Wherein the traffic channel is a dedicated channel (DCH).

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