KR100439228B1 - WLL terminal system - Google Patents

Abstract

The present invention provides a WLL terminal system including a wired telephone and a separate WLL fixing unit, wherein the WLL fixing unit includes a DTMF signal processing unit for interfacing the DTMF signal transmitted from the wired telephone unit in digit units, and the DTMF signal processing unit. The Duel UE terminal includes a TX tone status register for storing the interfaced digit value, and an MSM unit for polling the state value of the TX tone status register and wirelessly processing the detected DTMF tone signal and transmitting it to the corresponding telephone number. Provide a system.

As described above, the present invention integrates a DTMF signal processing unit capable of processing DTMF signals of a wireline telephone and a TX tone status register into a fixing unit, and a control processor in the MSM unit periodically polls the TX tone status register to process DTMF signals. Since it is not necessary to install a DTMF receiver and a codec separately outside the MSM unit, the manufacturing cost of the WLL terminal system can be reduced accordingly, and a space for installing a DTMF receiver and a codec in the WLL fixing device is not required. The spatial design of the system is also significantly improved.

Description

Thebulel terminal system {WLL terminal system}

The present invention relates to a UE terminal system, in particular, a DTMF signal processing unit capable of processing DTMF signals of a wireline telephone and a TX tone status register are integrated into the fixing unit, and a control processor in the MSM unit periodically transmits the TX tone status register. By processing the DTMF signal by polling in the above, there is no need to install a DTMF receiver and a codec separately outside of the MSM unit. Accordingly, the present invention relates to the UE terminal system which can reduce the manufacturing cost of the WLL terminal system.

In general, a wireless local loop (WLL) system is a telephone system that wirelessly connects subscriber lines within a distance of about 2-6 [km] from a base station without using a conventional telephone line. Many WLL-type systems have been developed and used, such as satellite systems, fixed microwave systems, cellular technology systems, and cordless systems. Used. The system using this cellular technology can coexist with the same network as the cellular mobile phone or PERSONAL COMMUNICATION SERVICE (PCS), and can cover a wider area, making the network more economical.

In addition, three multiple access schemes, that is, frequency division multiple access scheme (FDMA), time division multiple access scheme (TDMA), and code division multiple access scheme (hereinafter, referred to as CDMA) are used in a system using the cellular technology. In addition, a dual CDMA type WLL terminal system is widely used.

Then, referring to the conventional WLL terminal system as described above with reference to FIG. 1, the WLL terminal system includes a WLL fixing unit 70 for performing wireless communication with an external WLL switching station located within a predetermined distance, and the WLL fixing unit unit. Separated from (70) is largely divided into a wired telephone (71) connected by wire.

Here, the WLL fixing device 70 is a codec 72 for PCM signal processing of the audio signal input and output through the wireline telephone 71, and DTMF tones input from the wireline telephone 71 (Dual-tone multi) DTMF receiver 73 for receiving and receiving a signal, and audio and DTMF tone signals inputted and outputted through the codec 72 and DTMF receiver 73 are RF signals processed and transmitted to other communication equipment or antennas ( 74) and a mobile station modem (75) for processing a communication signal input from the outside as a baseband signal, and connected to the MSM unit (75) to receive data according to the function control signal of the MSM unit (75). And a memory unit 76 for storing or reproducing.

Here, the DTMF receiver 73 and the codec 72 are installed in a space separate from the MSM unit 75 in the WLL fixing unit 70.

In addition, the MSM unit 75 converts an RF module 77 for processing an external RF signal input through an antenna or an RF signal transmitted to another communication device, and an RF signal input / output to the RF module 77. And a DTMF signal inputted from the DTMF receiver 73, a modem 78 for demodulating, a control processor 79 for controlling the overall function of the MSM unit 75, including the function of the modem 78, Including the interface unit 80 for interfacing the external input, and compresses the DTMF signal or PCM signal input through the interface unit 80 and the codec 72 at a predetermined ratio to transmit or perform the reverse process Vocoder 81 is included.

In addition, the wired telephone 71 has a key panel unit 82 for generating a DTMF signal according to a key signal input by the user and transmitting the DTMF signal to the DTMF receiver 73 of the WLL fixing device unit 70, and the wired telephone. And a communication circuit section 83 for processing the voice signal of the user of 71 and transmitting it to the codec 72 of the WLL fixing device section 70 via a wire.

Meanwhile, referring to the operation of the conventional WLL terminal system as described above, first, the user picks up the handset 84 of the landline telephone 71 separated from the WLL fixing device unit 70 and makes a call through the key panel unit 82. Input the phone number signal of the desired counterpart. Then, the key panel unit 82 of the wired telephone 71 converts the telephone number signal input by the user into a DTMF signal and inputs the DTMF receiver 73 of the WLL fixing unit 70. The DTMF receiver 73 of the WLL fixing device 70 detects the DTMF signal input from the key panel 82 of the wireline telephone 71, processes the predetermined signal, and then interfaces the MSM 75 with the interface unit. Enter (80). In addition, the interface unit 80 of the MSM unit 75 interfaces the input DTMF signal and inputs it to the vocoder 81. Then, the vocoder 81 of the MSM unit 75 compresses the input DTMF signal at a predetermined ratio and inputs it to the modem 78. At this time, the control processor 79 of the MSM unit 75 recognizes this, modulates the DTMF signal through the modem 78, and then processes the RF signal through the RF module 77 to an external WLL switching station (not shown). Send it out. Then, when the call is established with the counterpart communication equipment by the WLL switching station, the user of the wired telephone 71 emits a voice signal through the handset, and accordingly, the communication circuit unit 83 of the wired telephone 71 processes the voice signal to WLL. Input to the codec 72 of the fixing unit 70. Then, the codec 72 PCM decodes the input voice signal into a digital signal and inputs it to the vocoder 81 of the MSM unit 75.

Then, the control processor 79 recognizes this, modulates the PCM signal through the modem 78, processes the RF signal through the RF module 77, and transmits the RF signal to an external WLL switching station to perform normal WLL communication. The memory unit 76 stores data generated in the course of the operation according to the function control signal of the control processor 79.

However, the WLL fixing device 1 having the conventional MSM unit as described above has a codec (for processing the voice signals of the DTMF receiver 73 and the wireline telephone 71 to receive the DTMF signal of the wireline telephone 2). Since 72) must be separately installed outside of the MSM unit with one chip, the manufacturing cost of the WLL terminal system has been significantly increased. In addition, the DTMF receiver 73 and the wires in the WLL fixing unit 70 can be increased. Since a separate space for installing the telephone 71 should always be provided, there is a problem of degrading the space design of the WLL terminal system accordingly.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems. The DTMF signal processing unit and the TX tone status register, which can process the DTMF signal of the wireline telephone, are integrated into the fixing unit, and the control processor in the MSM unit is TX. By periodically polling the tone status register to process DTMF signals, there is no need to install a DTMF receiver and codec separately outside of the MSM unit, thereby providing the UE terminal system that can reduce the manufacturing cost of the WLL terminal system. The purpose is.

It is another object of the present invention to provide a UE terminal system in which the space design of the WLL terminal system is considerably improved since there is no need to install a DTMF receiver and a codec in the WLL fixing device.

The present invention for achieving the above object is a WLL terminal system including a WLL fixing device unit configured separately from a wire telephone, the WLL fixing device unit and DTMF signal processing unit for interfacing the DTMF signal transmitted from the wire telephone in digit units; And a TXM status register for storing the digit values interfaced by the DTMF signal processing unit, and a MSM for polling the status values of the TX tone status register and wirelessly processing the detected DTMF tone signals to the corresponding telephone number. Provides a more UEL terminal system including a wealth.

1 is an explanatory diagram illustrating a conventional WLL terminal system.

2 is an explanatory diagram illustrating a WLL terminal system of the present invention.

<Detailed Description of Codes>

1: WLL fixing unit 2: wired telephone

3: TX tone status register 4: MSM part

5 memory unit 6 key panel unit

7: RF Module 8: Modem

9: control processor 10: interface unit

11: data signal processing block 12: DTMF signal processing unit

13: PCM signal processor 14: key button

15: control unit 16: handset

17: communication circuit

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

As shown in FIG. 2, the present invention is largely divided into a WLL fixing device 1 and a wired telephone 2 which is connected to the WLL fixing device 1 in a wired manner to perform communication, wherein the WLL fixing is performed. The device unit 1 detects by polling the state value of the TX tone status register 3 and the TX tone status register 3 which store the state value in the digit unit of the DTMF signal transmitted from the wireline telephone 2. An MSM unit 4 for processing a DTMF tone signal and a voice signal input through the wired telephone 2 and transmitting the RF signal to another communication device or processing a communication signal input from the outside through an antenna as a baseband signal. And a memory unit 5 connected to the MSM unit 4 for storing or reproducing data according to a function control signal of the MSM unit 4, and inputting a control command signal of a user to the MSM unit 4; The key panel part 6 is included.

In addition, the MSM unit 4 includes an RF module 7 for processing an external RF signal input through an antenna or an RF signal transmitted to other communication equipment, and an RF signal input / output to the RF module 7. The modem 8 to demodulate, the control processor 9 to control the overall function of the MSM unit 4, including the function of the modem 8, and the components in the WLL fixture unit 1 An interface unit 10 for interfacing an external input including a signal input from the terminal and the TX tone status register 3 to detect a DTMF signal, and process a voice signal input from the landline 2 as a PCM signal. And a data signal processing block 11.

Here, the data signal processing block 11 is a DTMF signal processing unit 12 for interfacing the DTMF signal transmitted from a wire telephone in digit units, and is located in one block of the DTMF signal processing unit 12 and is connected to the wire telephone 2. And a PCM signal processor 13 for processing the voice signal input from the PCM signal.

In addition, the wired telephone 2 judges the key button unit 14 for inputting a user's key signal, the telephone number signal and the function control signal inputted from the key button unit 14, The MSM unit 4 of the WLL fixing unit 1 is signal-processed by the control unit 15 for controlling the overall function and the voice signal input through the handset 16 according to the function control signal of the control unit 15. Communication circuitry 17 for transmitting to the data signal processing block 11 of FIG.

Next, the operation and effects of the present invention as described above will be described.

The present invention, first, when the user picks up the handset 16 of the landline telephone that is separated from the WLL fixing device unit 1 for a call and inputs the telephone number signal of the other party to call through the key button unit 14; The key panel unit 6 of the wireline telephone 2 converts the telephone number signal input by the user into a DTMF signal and inputs the DTMF signal processing unit 12 of the WLL fixing unit 1 to the DTMF signal.

Then, the DTMF signal processing unit 12 interfaces the DTMF signals transmitted by the key panel unit of the wireline telephone 6 in digit units and records them in the TX tone status register 3.

At this time, since the DTMF signal processing unit 12 is a DTMF signal transmitted from the key panel unit 6 of the wireline telephone, the DTMF signal used in a normal wireline telephone is composed of this DTMF signal, that is, a keypad digit (KEYPAD DIGITS). The digit value is recorded in the TX tone status register 3. Here, the DTMF digit value recorded in the TX tone status register 3 is, for example, when the input value of the key panel portion is "0", for example, 679 [HZ]. Is interfacing and recorded with a digit signal of the form " 123A " having &lt; RTI ID = 0.0 &gt;]. Thus, the TX tone status register 3 changes its status value according to the input DTMF tone signal. The status register 3 initializes the internal specific flag so that the DTMF tone signal is transmitted through the signal channel. At this time, the control processor 9 of the WLL fixing unit 1 performs the TX tone status register. There are polls (3) periodically, and if the if the DTMF tone signal to set the status value of the tone TX status register (3) is set to a process for detecting this predetermined signal and the input to the modem (8). Then, the control processor 9 recognizes this, modulates the DTMF tone signal through the modem 8, processes the RF signal through the RF module 7, and sends it to an external WLL switching station (not shown). The control processor 9 assumes that the DTMF signal is not input from the wireline telephone when there is no state value recorded in the TX tone status register 3. However, if there is a state value recorded in the TX tone status register 3, the control processor 9 reads this value and decodes it and outputs it to the modem 8.

And, when a call is established with the counterpart communication equipment by the WLL switching station, the MSM unit 4 of the WLL fixing device unit 1 informs the wire telephone 2 of this fact through the reverse process of the above process and accordingly, The telephone 2 notifies the user of this call connection through a beep.

Then, the user of the landline phone 2 emits a desired voice signal through the handset 16, and accordingly, the communication circuit unit 17 of the wireline phone 2 processes the voice signal to the WLL fixing device unit 1. Input to the data signal processing block 11). Then, the PCM signal processing unit 13 of the data signal processing block 11 PCM decodes the input voice signal into a digital signal, processes a predetermined signal, and then inputs it to the modem 8.

At this time, the control processor 9 of the MSM unit 4 recognizes this, modulates the PCM signal through the modem 8, and then processes the RF signal through the RF module 7 and sends it to an external WLL switching station. Execute WLL communication. The memory unit 5 of the WLL fixing unit 1 stores data generated in the course of the operation according to the function control signal of the control processor 9.

As described above, the present invention integrates a DTMF signal processing unit capable of processing DTMF signals of a wireline telephone and a TX tone status register into a fixed unit, and a control processor in the MSM unit periodically polls the TX tone status register to perform DTMF signal. By doing so, since there is no need to install a DTMF receiver and a codec separately outside the MSM unit, the manufacturing cost of the WLL terminal system can be reduced accordingly.

Further, according to the present invention, since the space for installing the DTMF receiver and the codec is not required in the WLL fixing device, the space design of the WLL terminal system is also significantly improved.

Claims (3)

In the WLL terminal system including a wired telephone and a WLL fixing unit configured separately The WLL fixing unit includes a DTMF signal processor for interfacing the DTMF signal transmitted from the wireline telephone in digit units, a TX tone status register for storing the digit value interfaced by the DTMF signal processor, and the state of the TX tone status register. And a MSM unit for polling a value and wirelessly processing the detected DTMF tone signal and transmitting it to the corresponding telephone number. delete delete