KR19980046093A - Extension Call between Mobile Devices in Wireless Telephones - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

It is a technology for wireless communication in a wireless terminal period without going through a repeater in a wireless communication system.

I. The technical problem to be solved by the invention

The wireless telephone solves the problem of being inconvenient to use in a wireless telephone having a large number of portable devices because the message has to be transmitted and received via a fixed device when implementing an internal call between portable devices.

All. Summary of Solution of the Invention

The receiver side calls the receiver side by inputting the intercom key and the mobile device number to be called, and sends a call response signal to the transmitter side when the call is detected by the receiver side. A call is established between the portable device and the receiving portable device.

la. Important uses of the invention

Cordless phone

Description

Extension Call between Mobile Devices in Wireless Telephones

The present invention relates to an extension call method of a portable radio terminal period in a wireless communication system, and more particularly, to an extension call method between terminals performing radio communication in a radio terminal period without passing through a repeater in the radio communication system.

In general, in a wireless communication system, communication is possible only through a repeater in order to make a call between portable devices. Among the communication methods of the portable wireless terminal and the wireless repeater, the TDD method has the same transmission / reception radio frequency, alternate transmission / reception time, and wireless communication. For example, in a radiotelephone, the transmission carrier frequencies of the fixed device and the portable device are the same, received by the portable device at the time of transmission from the fixed device, and received by the fixed device at the time of transmission from the portable device, and fixed with the portable device. Send and receive information between devices. Such wireless telephones have a problem in that they are inconvenient to use in wireless telephones having a large number of portable devices because messages have to be transmitted and received via fixed devices when implementing an internal call between portable devices.

Accordingly, an object of the present invention is to provide an internal call method between portable devices in which a telephone is directly connected to a mobile device without a fixed device in order to solve the above problems.

Another object of the present invention is to provide an internal call method between portable devices that can be used as a wireless telephone in a home and can be used as a walkie-talkie between portable devices outdoors.

In order to achieve the above object, the present invention provides an intercom key and a portable device number to be called in the transmitting mobile device to call the receiving mobile device, and when the call is detected by the receiving mobile device, the transmitting mobile device is transmitted. And sending a call response signal to the device to form a call between the sending portable device and the receiving portable device.

1 is a block diagram of a terminal according to an embodiment of the present invention

2 is a flow chart of a call control of a mobile device of a transmitting side for extension calls between mobile devices according to an embodiment of the present invention.

3 is a flow chart illustrating a reception control of a receiver-side portable apparatus for extension call between portable apparatuses according to an embodiment of the present invention.

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

1 is a block diagram of a terminal according to an embodiment of the present invention.

The key matrix 10 generates key signals for inputting various telephone numbers or data or terminal call commands. ABC DSP BURST MODE CONTROLLER MICRO CONTROLLER DIGITAL SIGNAL PROCESSOR 12 controls the overall operation of the handheld device for wireless communication between terminals. The memory 14 stores the program of the present invention and stores the identification code (ID code) of the portable device. The RF transmitter / receiver 16 converts the audio signal output from the ABC DSP 12 into an RF signal and outputs it through the antenna 24, converts the signal received through the antenna 24 into an intermediate frequency signal, demodulates it, and outputs the demodulated signal to the ABC DSP 12. do. The speaker 22 outputs an analog audio signal output from the ABC DSP 12 as an audible signal. The microphone 20 converts the user's analog voice signal into an electrical signal and provides it to the ABC DSP 12. The ABC DSP 12 analyzes the digital signal received in the unit of slots when the ID data received from the RF transmitter / receiver 16 is set, converts the voice signal into an analog signal, and outputs it to the speaker 22. An analog audio signal input from 20 is processed into a digital signal and configured in a slot unit and provided to the RF transmitter / receiver 16. The display unit 18 displays the processing status of the ABC DSP 12 when performing various functions.

2 is a flow chart of a call control of a mobile device of a transmitting side for extension calls between mobile devices according to an embodiment of the present invention.

3 is a flowchart illustrating a reception control of a receiver-side portable apparatus for extension call between portable apparatuses according to an embodiment of the present invention.

1 to 3 will be described in detail the operation of the preferred embodiment of the present invention.

Multiple portable devices can be used by setting one fixed device ID, and the mobile devices set in the fixed device have a unique number of the mobile device included in the ID data. That is, when the portable device and the fixed device perform ID setting, the ID data in the fixed device is backed up and stored in the memory of the portable device, and the serial number can be assigned sequentially from the mobile device to be the first ID setting. According to the program, up to N portable devices can be registered. The portable device and the fixed device of the digital radiotelephone can make the wireless channel formation between the portable devices and the wireless channel between the fixed devices by making the transmission and reception carrier frequencies the same when capturing the channel.

In the present invention, an operation of making an extension call by calling a second portable device from the first portable device by using the portable devices in the radiotelephone having a plurality of portable devices without passing through the fixed device will be described.

First, when the user of the first mobile device attempts to make an intercom call with the user of the second mobile device, when the user of the first mobile device presses the intercom key and the second key of the key matrix, ABC DSP 12 of the first mobile device is connected to the first mobile device. It is recognized that the user of the device wants to make an intercom call with the user of the second portable device. Therefore, ABC DSP 12 of the first portable device transmits the call request command data through the RF transmitter / receiver 16. At this time, the second mobile device analyzes the data received from the first mobile device to determine whether it is an intercom call request command data, and locks to the corresponding channel to form an intercom call path of the second mobile device, and the intercom call answer signal to the first mobile device. Send the. When the first mobile device receives the intercom call response signal, the first mobile device catches the corresponding channel to form a call path with the second mobile device. As described above, the operation of making an internal call between the first portable device and the second portable device will be described with reference to FIGS. 2 and 3.

First, in step 101, the user of the first portable device presses the intercom key provided in the key matrix 10 to call the second portable device. In step 102, the ABC DSP 12 of the first portable apparatus checks whether the intercom key of the key matrix 10 is pressed and proceeds to step 103 if the intercom key is pressed. In step 103, the ABC DSP 12 of the first portable device displays the number 1 of the portable device on the LCD of the display unit 18 and causes the intercom indicator to blink. The user then presses the call number 2 key to call the second mobile device. Then, in step 104, the ABC DSP 12 of the first portable apparatus checks whether a numeric key is input and proceeds to step 105 if the numeric key is input. In step 105, the ABC DSP 12 of the first mobile device analyzes the input numeric key to delete the number 1 displayed on the LCD of the display unit 18 and displays the input numeric key 2, and the intercom symbol continues. The intercom ring tone is generated and the intercom call request command data is wirelessly transmitted to the second portable device. In operation 201, the second mobile device is in the standby state. In step 202, the second mobile device determines whether the intercom call request command data is received from the first mobile device. In step 203, the ABC DSP 12 of the second portable device generates an intercoming sound so that the user can detect that there is a call of the second mobile device, and causes the intercom display symbol to blink on the LCD of the LCD display unit 18. At this time, the user hears the intercom ring tone and presses the intercom call key of the second portable device. In step 204, the second mobile device ABC DSP 12 checks whether the intercom call key is pressed, and if the intercom call key is pressed, proceeds to step 205. In step 205, ABC DSP 12 of the second mobile device sends an intercom call response signal to the first mobile device. In this case, the ABC DSP 12 of the first mobile device checks whether an intercom call response signal is received from the first mobile device in step 106. If the intercom call response signal is not received, proceeds to step 107 to notify the user that there is no intercom call response. To generate a beep sound, which is an alarm signal, proceed to step 110. The user hears this beep and detects that there is no response at the second portable device. However, if the intercom call response signal is received, the flow proceeds to step 108 and ABC DSP 12 of the first mobile device establishes a call channel to perform an intercom call with the second mobile device. In step 206, the ABC DSP 12 establishes a call channel in the second portable device, forms an intercom call path with the first portable device, and performs a call. The intercom call completion key is input from the key matrix 10 of the first portable device at step 109 or the intercom call is completed from the key matrix 10 of the second portable device at step 207. When the key is input, the process returns to the standby state in steps 110 and 208.

As described above, the present invention can be used as a wireless telephone in a home by using a portable device of a wireless telephone and can be used as a walkie-talkie between portable devices outdoors. .

Claims (5)

In a wireless telephone having two or more portable devices, a method for implementing a call without a fixed device between portable devices, The receiver side calls the receiver side by inputting the intercom key and the mobile device number to be called, and sends a call response signal to the transmitter side when the call is detected by the receiver side. An internal call method between portable devices, characterized in that a call is established between the portable device and a receiving portable device. In a wireless telephone having two or more portable devices, a method for implementing a call without a fixed device between portable devices, Transmitting the call request command data to the receiving mobile device when the intercom key and the mobile device number are input by the transmitting mobile device; Receiving and analyzing the transmitted call request command data at the receiving side portable apparatus and transmitting an intercom call response signal to the transmitting side portable apparatus when the portable apparatus call signal is received; And when the intercom call response signal is received by the transmitting mobile device, forming a call between the transmitting mobile device and the receiving mobile device. In a wireless telephone having two or more portable devices, a method for implementing a call without a fixed device between portable devices, Displaying the intercom display symbol on the display device when the intercom key is pressed on the mobile device; Transmitting an intercom ringing tone and transmitting a call request command data to a receiving mobile device when an intercom ringing tone is generated when the number of the mobile device to be called is displayed after displaying the intercom display symbol; Receiving and analyzing the transmitted call request command data at the receiving mobile device to generate an intercom ringing tone when the mobile device call signal is generated, and display an intercom display code; Transmitting an intercom call response signal to the transmitting-side portable device when a call key is input after displaying the intercom display symbol; And when the intercom call response signal is received by the transmitting mobile device, forming a call between the transmitting mobile device and the receiving mobile device. The method of claim 3, And generating an alarm signal for notifying the user of the intercom call response when the intercom call response signal is not received from the receiving side portable device after transmitting the call request command data to the receiving side portable device. An extension call between portable devices, characterized in that. The method of claim 4 And the alarm signal is a beep sound.