KR20010083701A - Wireless communication appratrus and method for being capable of selecting communication quality - Google Patents

Abstract

PURPOSE: A device and a method for radio communication capable of selecting call quality are provided to speak over a telephone with the best quality by understanding the mode and the performance of user call device. CONSTITUTION: A user presses the button using a keypad to select a codec mode. It is determined whether the mode is a normal mode. If not, it is determined whether the mode is the high quality of sound mode. If the high quality mode is selected, a codec having a transfer rate corresponding to the high quality mode is selected. The codec mode selected in the user part of a portable phone is transmitted, and the answer that it can be processed in the other part of portable phone is received. If the corresponding codec mode is processed, the user transceives a voice using the selected mode. If not, or there is not any answer, said corresponding mode is translated into a normal mode.

Description

WIRELESS COMMUNICATION APPRATRUS AND METHOD FOR BEING CAPABLE OF SELECTING COMMUNICATION QUALITY}

The present invention relates to a technology for improving the call quality of a wireless mobile phone, and more particularly, to a wireless call apparatus and method capable of selecting a call quality to enable a call with the best quality by grasping a use mode and a mobile phone performance of a call counterpart. It is about.

Since the development of wired telephones, communication technology has made rapid progress from radios capable of talking at short distances without a wired connection between two parties, to cordless phones for 900MHz and mobile phones capable of making calls even in high-speed cars.

In particular, in recent years, the functions of mobile phones, which have been limited to simple voice transmission, have been gradually expanded to enable the transmission of text messages and various information, as well as the MP3 player function for playing MP3 music and internet access.

In addition, in the 21st century, the next-generation mobile phone standard, which uses far higher frequency bands than current mobile phones, is excellent in sound quality and is an international single standard, enables users to talk to each other from anywhere in the world with one handset. Mobile phone makers are also developing their mobile phones.

Accordingly, in order to improve call quality, various standards are prepared, and call quality is closely related to codecs for encoding voice.

However, in the current mobile phones, there are no mobile phones with a plurality of codecs with various performances, so there is no way for a user to directly select and transmit the voice quality to be transmitted.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, and a wireless communication apparatus and method capable of selecting a call quality to make a call with the best quality by grasping a use mode and a mobile phone performance of a call partner. The purpose is to provide.

1 is a block diagram showing a schematic configuration of a wireless communication device according to the present invention.

2 is a flowchart illustrating a method of directly selecting a codec mode by a user in the present invention.

Figure 3 is a flow chart illustrating another method of selecting a codec mode in the present invention.

*** Description of the symbols for the main parts of the drawings ***

1: RF processing unit 2: voice signal processing unit

3: keypad 4: microphone

5: speaker 6: central processing unit

7: codec

The present invention for achieving the above object, RF processing unit for processing a high frequency signal received through the antenna; A voice signal processor for separating and processing only a voice signal from the high frequency signal; A keypad for inputting an opposing telephone number or a menu control code; A microphone for receiving a voice of a user; A speaker for outputting a decoded speech signal of the opponent; A central processor configured to control the components to perform a smooth operation; And a codec unit having a plurality of voice codecs for encoding a voice at an appropriate bit rate under the control of the central processing unit.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a schematic configuration of a wireless communication apparatus according to the present invention, and an RF processor 1 for processing a high frequency signal received through an antenna as shown therein; A voice signal processor (2) for separating and processing only a voice signal from the high frequency signal; A keypad 3 for inputting an opposing telephone number or a menu control code; A microphone 4 for receiving a voice of a user; A speaker 5 for outputting the decoded speech signal of the opponent; A central processing unit (6) for controlling the components to perform a smooth operation; And a codec unit 7 having a plurality of voice codecs for encoding a voice at an appropriate bit rate under the control of the central processing unit 6.

Next, the operation of the present invention configured as described above will be described in more detail with reference to the flowcharts of FIGS. 2 and 3.

First, FIG. 2 illustrates a method of directly selecting a codec mode by a user. Once the user presses a button for selecting a codec mode by the keypad 3 or the like, it is determined whether the mode is a normal mode.

Accordingly, if the normal mode is selected, the voice codec 7a having a data rate corresponding to the normal mode is selected to undergo a signal processing process for voice transmission and reception.

On the other hand, if the mode is not the normal mode, it is determined whether or not the high quality mode this time, if the high quality mode is selected, the voice codec (7b) having a corresponding data rate is selected to transmit and receive the voice through a signal processing process.

However, if it is determined that the voice is not a voice by this mode determination, it is determined whether the sound mode is a natural sound mode so that a sound such as music or MIDI can be heard, and a signal processing process is performed through the corresponding codec 7c. Sound can be output to the speaker 4.

In this case, the mode may be directly selected by the user when the user first makes a phone call, and the highest quality high quality mode supported by the mobile phone may be automatically selected.

Here, the general mode is the most popular transmission mode to support all mobile phones, but it will be difficult to talk with mobile phones that have been released long time ago or mobile phones that do not support the high quality mode as described above.

Therefore, when the user selects the direct mode, if the call is not made in the high quality mode, the user can switch to the normal mode to make the call again.

However, when the user directly switches the mode as described above, it is cumbersome to use it, so the user first calls the general mode supported by all mobile phones, and thus may not use the high quality mode.

Accordingly, the present invention transmits the codec mode selected in the mobile phone of the user side to the other side as in the other embodiment shown in FIG. 3 so as to answer whether the mobile phone of the other side can process.

That is, a message for confirming the information is further included in a setup message sent and received for setting up a call with the other party's mobile phone so that the codec can be selected in response.

Once the codec is selected through the process of FIG. 2, the information is included in the setup message when the call is established with the mobile phone of the other party.

Accordingly, when there is a response indicating that the counterpart mobile phone can handle the response, the user can transmit / receive in the selected mode, and there is a response that the processing is not possible or there is no response because the function is not supported at all. In this case, it automatically switches to normal mode, which is lower level than high quality mode, so that it can transmit and receive.

As described above, the wireless call apparatus and method of the present invention, which can select the call quality, determine the mode of the user call apparatus and the performance of the call apparatus of the called party to determine the best according to the type of transmission / reception data (voice, music, etc.) This has the effect of making quality calls.

Claims (5)

An RF processor for processing a high frequency signal received through an antenna; A voice signal processor for separating and processing only a voice signal from the high frequency signal; A keypad for inputting an opposing telephone number or a menu control code; A microphone for receiving a voice of a user; A speaker for outputting a decoded speech signal of the opponent; A central processor configured to control the components to perform a smooth operation; And a codec unit having a plurality of voice codecs for encoding a voice at an appropriate bit rate under the control of the central processing unit. Determining a type of a call quality mode selected by a user; And a second step of selecting a codec corresponding to the determined mode to perform signal processing. A first step of establishing a call with the other party's wireless communication device by including the call quality mode information selected by the user's wireless communication device in a setup message; A second step of switching a call quality mode according to a response type of the other party's wireless communication device when the call is set up; And a third step of performing signal processing with a codec corresponding to the switched mode. 4. The method of claim 3, wherein if there is no response from the other party's wireless communication device in the second step or if a non-response response is received, the selection mode is switched to the normal mode, and if the available response capable of supporting the mode is received, Wireless communication method capable of selecting the call quality, characterized in that to perform the signal processing in the mode. The method of claim 2 or 3, wherein the call quality mode is selected directly or automatically by a user.