KR100339335B1 - Interface Device of Terminal's in Wireless Local Loop System - Google Patents

Abstract

The present invention relates to a wireless subscriber network system, which is used as a handset of a WLL terminal when coupled with a main body using a handset of a WLL terminal and a wireless subscription that can be used as a mobile terminal when used as a wireless terminal when separated from the main body. It is to provide an interface device between terminals in a self-network system. According to the present invention, a radio frequency (RF) unit for transmitting / receiving a radio signal, a baseband unit for processing an input voice signal and converting it into a radio signal or converting the received radio signal into a voice signal, A keypad for inputting a signal, a microphone / speaker for inputting / outputting a voice signal, a control circuit unit for detecting a combination of a wireless subscriber network terminal body, the radio frequency unit, a baseband unit, a keypad, a microphone, a speaker, and a control circuit unit, respectively And a wireless terminal including a battery unit for supplying power to the battery, detecting whether the wireless terminal is coupled, and a charging unit and a coupling detection circuit unit for charging the battery when the wireless terminal is detected, and an internal speaker for outputting a voice signal. In this regard, it is possible to use a handheld by using a handset of a WLL terminal. Was newly added to the mobile terminal has a number of points.

Description

Interface device between terminals in a wireless subscriber network system

The present invention relates to a wireless local loop (hereinafter, abbreviated as WLL), and more particularly, to operate as a handset of a terminal when connected to a main body using a handset of a WLL terminal, The present invention relates to a WLL terminal combined with a mobile phone, which operates as a mobile mobile phone only by the handset itself.

In general, the WLL system is for wirelessly providing a subscriber line provided between a subscriber and a telephone station. Such a system can provide a voice communication service, a facsimile transmission service, and a data communication service when needed.

The WLL system combines radio frequency (RF) technology developed in the 1970s with semiconductor and wireless communication technology developed in the late 1980s, and solves problems such as frequency efficiency, wireless channel quality, and cost per subscriber. It began to be developed.

The advantage of the WLL system is that construction costs, time, and maintenance costs are reduced compared to the conventional wired network, and it is possible to provide various services such as excellent call quality, data, and ISDN. Therefore, it can be very useful for a new service provider who wants to secure a subscriber network early, or for a developing country in which wired network structure is poor.

The basic configuration of such a WLL system consists of a telephone and a network interface unit (NIU) that enables wireless communication with the telephone during the exchange. In addition, the WLL system is divided into a separate WLL system and an integrated WLL system according to a connection relationship between a telephone and a subscriber access device. A separate WLL system is a wired connection between a fixed telephone and a subscriber access unit so that a subscriber having a fixed telephone connected to the existing wired network can purchase only a subscriber access unit without purchasing a telephone when joining the WLL system. On the other hand, the integrated WLL system is composed of a single phone and a connecting device in hardware so that a subscriber who does not have a fixed telephone connected to the existing wired network can easily join the WLL system.

1 is a block diagram of a typical separate and integrated WLL system.

Referring to FIG. 1, a fixed telephone 10 installed in a home or an office, a subscriber access device 20 connected to a fixed phone 10 for transmitting and receiving information on a wireless interface, and an integrated telephone having a built-in subscriber access device ( 30, the base station 40 for wireless connection with the subscriber connection device 20 or the integrated telephone 30, the base station controller 50 for wired connection with the base station 40, and for the functions of call processing and message delivery; It consists of an operating device 60 for operating and maintaining the WLL system. Here, the switching center 70 is connected to the base station controller 50.

The operation of each component of the WLL system configured as described above will be described in detail as follows.

First, the subscriber access device 20 is located at the last stage of the WLL system and transmits / receives information on the air interface, and transmits a signal converted from radio frequency to baseband to the subscriber and its reverse process. Performs baseband signal processing, signal protocol processing with the communication network, and voice signal processing.

In addition, the base station 40 wirelessly connects to the subscriber access device 20 or the integrated terminal 30 to process radio frequency signals to perform modulation and demodulation, channel coding and decoding functions of the radio signals, and the base station controller 50. Is connected by wire through specific trunk (E1 / HDSL).

The base station controller 50 is located between the base station 40 and the exchange 70 to control and control a plurality of base stations, and to transmit signal messages, call processing functions, code conversion functions, and the base station 40 and the switching center 70. It performs the interface function between).

The operation device 60 is in charge of the operation and maintenance of the subscriber access device 20, the base station 40 and the base station controller 50, the network configuration management function, network element management function, performance management function, data processing function, software Perform administrative and security management functions.

In the case of the conventional fixed WLL terminal using the WLL system, all the circuits necessary for the implementation of the technology are contained in the main body of the terminal, so the handset functions only a microphone for inputting an audio and an earpiece (speaker) circuit for outputting audio. It is attached to the body in the form that it was.

2 is a block diagram illustrating an operation of input / output of voice through a handset in a conventional WLL terminal.

Referring to FIG. 2, the radio wave received through the antenna is demodulated into a digital (CDMA) signal via an RF unit 11, and the demodulated digital signal is restored to voice through a baseband unit 12. The voice restored in the terminal main body is delivered to the handset again and delivered to the user through the handset 13. In addition, the user's voice is input through the handset 14 of the handset, and then digitalized (CDMA) by the baseband (Bseband) 12 and the signal is transmitted to the other party through the RF section 11 again. On the other hand, even if you want to make a call, the call number of the other party is to be input through the keypad 15 attached to the main body of the WLL terminal.

However, when attempting a call with an external or internal subscriber using a conventional WLL terminal, all circuits necessary for implementing the technology were attached to the inside or the periphery of the main body of the WLL terminal.

Therefore, the handset connected by wire has only a circuit for detecting a handset that delivers the user's voice and a handset that delivers the external ringing tone to the user, thereby limiting the user's communication area and allowing the user to move away from the body of the WLL terminal. If there is, there is a disadvantage of difficulty in calling.

In addition, there is a disadvantage that the user is unsuitable for volume, weight or user convenience to use the WLL terminal for mobile.

An object of the present invention has been made in view of the above-mentioned problems of the prior art, and when used with a handset of a WLL terminal, it is operated as a handset of the WLL terminal and used as a wireless terminal when separated from the main body. The present invention provides a device for inter-terminal interface in a wireless subscriber network system that is suitable for operation as a mobile cellular phone.

According to an aspect of the present invention for achieving the above object, a radio frequency (RF) unit for transmitting / receiving a wireless signal, processing the input voice signal to convert to a wireless signal or convert the received wireless signal into a voice signal A baseband unit for converting a signal into a signal, a keypad for inputting a signal by a user, a microphone / speaker for inputting / outputting a voice signal, a control circuit unit for detecting a combination of a wireless subscriber network terminal, the radio frequency unit, a baseband unit, and a keypad And a wireless terminal including a battery unit for supplying power to each of the microphone / speaker and the control circuit unit, and detecting whether the wireless terminal is coupled, and charging unit and a coupled detection circuit unit charging the battery when the wireless terminal is detected. It is configured to include an internal speaker for outputting a voice signal.

1 is a block diagram of a typical separate and integrated WLL system.

2 is a block diagram illustrating an operation of input and output of voice through a handset in a conventional WLL terminal.

Figure 3 is a block diagram illustrating the operation when using a WLL terminal according to the present invention portable.

Explanation of symbols on the main parts of the drawings

20: RF unit 21: base band (BASE BAND) unit

22: battery part 23: hydration part (earpiece)

24: talker (microphone) 25: keypad

26: charging unit and coupling detection circuit unit 27: built-in speaker

Hereinafter, the configuration and operation according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The present invention allows the handset to be used in a portable manner by separating the handset, which has been used by a conventional wire, from the WLL terminal (hereinafter, referred to as a handset).

3 is a block diagram illustrating the operation when using a WLL terminal according to the present invention portable.

Referring to FIG. 3, a terminal using a WLL system includes an external power supply (AC adapter) for supplying all the power of an internal circuit, a charging unit and a coupling detecting circuit unit for supplying power of a wireless terminal and detecting whether the terminal is coupled to the wireless terminal. 27), a main body of the WLL terminal comprising the internal speaker 28, an RF unit 21 for demodulating the received radio wave into a CDMA digital signal, and a base band unit for restoring the demodulated CDMA digital signal to voice. (22), the handset 24 for delivering the restored voice to the user, the talker 26 for receiving the user's voice, and the keypad 25 for inputting the call number of the party to be sent independently. It consists of a wireless terminal consisting of a battery unit 23 to enable use as a power source when used. Here, coupling detection is used to charge a mobile phone in a wired / wireless telephone or cellular mobile communication which is commonly used in homes. It's the same technology that detects when your phone is in the charger and charges it.

The operation process of the present invention having such a configuration can be described in the following two cases.

First, the operation is when the wireless terminal is coupled to the WLL terminal body.

First, a wireless terminal coupled to the WLL terminal body in an on-hook state (when a handset is placed on the main body) is maintained in a reception state.

At this time, all the power supplies of the circuit are operated by being supplied from the power supply circuit of the WLL terminal main body, and the battery of the wireless terminal is charged by the input power from the AC adapter.

The sequence of call and call operation using the WLL terminal in the reception waiting state is as follows.

When a signal for calling a subscriber from the outside is applied, the radio wave received by the RF unit 21 is demodulated into a CDMA digital signal.

The demodulated CDMA digital signal is restored to voice in the base band 22 section.

Here, the call sound is transmitted to the user through the built-in speaker 28 of the main body of the WLL terminal to inform the user that there is call information together with the restored voice signal.

When the user hears the ringing tone and listens to the wireless terminal (off-hook state), the restored voice signal is transmitted to the user by the receiver 24 of the wireless terminal, thereby enabling a call.

In addition, when the user of the WLL terminal attempts to make a call, the process proceeds to the reverse of the above-described operation process starting with the voice signal input through the talker 26.

Second, the operation when the wireless terminal separated from the main body of the WLL terminal is used as a portable device

The separated wireless terminal has a built-in control circuit that automatically detects this when separated or combined with the WLL terminal body. In this case, the control circuit unit may be additionally configured in the wireless terminal to have a function of automatically detecting when it is separated or combined with the wireless terminal and the main body of the WLL terminal, but the mobile station that controls the mobile phone in a code division multiple access (CDMA) mobile phone. Since there is a modem, the mobile station modem can detect it. That is, in the WLL terminal body, the charging unit and the coupling sensing circuit unit 27 detect the separation or coupling of the WLL terminal body and the wireless terminal in the wireless terminal.

Therefore, the wireless terminal separate from the main body of the WLL terminal allows the WLL terminal main body to independently execute the call and call functions as described above.

Since the wireless terminal to which the call and call functions are provided has a built-in battery, it is powered by the charging unit of the main body and operated by the power of the wireless terminal.

Since the operation when used as a wireless terminal is the same as the operation of a general mobile phone will be omitted.

According to the present invention mentioned above, it is possible to use a handset by using the handset of the WLL terminal can be mentioned that the mobility is newly added to the existing terminal. In addition, when used in conjunction with the main body can solve the charging problem of the wireless terminal, it is effective in that it can execute a separate function that the existing portable terminal does not have in that the speaker of the main body can be used.

In addition, the present invention can be applied to all WLL terminals that are currently commercialized, and when the product is specialized in its own products, the competitiveness of the company's WLL terminal products becomes stronger in that it is a portable combined use that cannot be implemented in other products. You can expect.

Claims (3)

A radio frequency (RF) unit for transmitting / receiving radio signals, A baseband unit for processing an input voice signal and converting the received voice signal into a wireless signal or converting the received wireless signal into a voice signal; Keypad for user to input signal, Microphone / speaker to input / output voice signal, Control circuit unit for detecting the coupling of the wireless subscriber network terminal body, A wireless terminal including a battery unit for supplying power to each of the radio frequency unit, baseband unit, keypad, microphone / speaker, and control circuit unit; A charging unit and a coupling sensing circuit unit configured to detect whether the wireless terminal is coupled, and to charge the battery when the wireless terminal coupling is detected; An inter-terminal interface device in a wireless subscriber network system comprising a main body of a wireless subscriber network terminal including an internal speaker for outputting a voice signal. delete delete