KR100419931B1 - SIP-Phone Wireless Bridge Unifing terminal And Control method thereof - Google Patents

Abstract

The present invention relates to a terminal device for Internet-based application services (hereinafter referred to as SIP-Phone Wireless Bridge terminal device) using SIP (Session Initiation Protocol; SIP), and in particular, the existing PSTN network and Internet through SIP-Phone Wireless Bridge. The present invention relates to a SIP-Phone Wireless Bridge terminal device capable of accommodating both a network and a mobile communication network to enable voice communication and to implement a wireless network as a single terminal.

Therefore, the telephone service is available to any network through one terminal by accommodating all the existing networks in one terminal, thereby making it more convenient to use. In addition, by enabling the configuration of a wireless network, it is possible to use network resources supporting the same type of air interface, and when the short-range communication in the company or home can ensure the mobility of the terminal user to facilitate the convenience.

Description

SIP-based wireless bridge integrated terminal device and control method thereof {SIP-Phone Wireless Bridge Unifing terminal And Control method}

The invention S IP (Session Init i ation Protocol; SIP), the existing PSTN network via the, in particular SIP-Phone Wireless Bridge relates to Internet-based application service terminal apparatus (hereinafter referred to as SIP-Phone Wireless Bridge terminal apparatus) for using The present invention relates to a SIP-Phone Wireless Bridge terminal device capable of accommodating all of the Internet network, the mobile communication network, and enabling a voice communication, and also implementing a wireless network as a single terminal.

In recent years, domestic and foreign companies are increasingly using the network.In the enterprise, a LAN (Local Area Network) is formed, and the office environment is more than a telephone network. to be. However, in the office, the LAN and the telephone (extension telephone) network are composed of independent networks, which requires twice as much cost to maintain them, and the environment in the office is also complicated by network lines and communication lines.

Accordingly, some of the above-mentioned problems have been solved by reducing communication costs and network maintenance costs by replacing the telephone network with a network line by a terminal device capable of operating in a LAN or the Internet.

FIG. 1 is a schematic diagram illustrating a conventional Internet phone. As shown in FIG. 1, a LAN card 1 for transmitting and receiving a packet by connecting to a network and a packet input through the LAN card 1 are decomposed. Or assembling data input from the sound card 3 into packets, and outputting voice data as sound from packets decomposed by the CPU 5 and the CPU 5 for controlling each component of the Internet phone, or The sound card 5 which outputs the sound input as audio data to the CPU 5 is incorporated in the computer main body.

However, such a conventional Internet phone accepts only a PSTN network and cannot be used as a conventional CDMA mobile phone using a mobile communication network or a cordless phone using a PSTN network.

In addition, separate equipment must be configured to accommodate video communication and wireless networks.

Therefore, it is complicated in terms of the configuration of the equipment as well as the additional cost for this, there was a problem to configure a separate equipment. In addition, most domestic companies have a somewhat complicated problem in call setup by using Internet phone equipment using H.323 or MGCP based VoIP protocol stack, which is relatively heavy and complicated compared to SIP protocol.

In general, many Internet applications use the TCP / IP protocol for data transmission. Since TCP is a transmission guarantee protocol, the retransmission of lost packets is repeated.

However, in order to retransmit a lost packet, it must be kept until a response is received to whether or not it has already been sent. If the storage is full because the response is late, it is better to wait until the response is received. TCP could not transmit more packets, which caused a serious delay instead of guaranteeing perfect transmission.

In addition, the conventional Internet phone uses RTP / UDP / IP to transmit voice data because voice data is more sensitive to delay than packet loss. However, RTP / UDP / IP has a problem in that data transmission delay is reduced but transmission is not guaranteed.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and has an object of providing a SIP-based wireless bridge integrated terminal device capable of providing a telephone service to any network by accommodating all existing networks as a single terminal device. .

In addition, another object of the present invention is to provide a SIP-based wireless bridge integrated terminal device that supports the sharing of network resources and mobility of users by enabling a call through an existing CDMA terminal in the configuration of a wireless network. .

1 is an exemplary view briefly showing the configuration of a conventional Internet phone;

2 is an embodiment of a SIP-Phone Wireless Bridge terminal device according to the present invention,

3 is an internal configuration diagram of a SIP-Phone Wireless Bridge terminal device according to the present invention;

4 is an operation flowchart of a SIP-Phone Wireless Bridge terminal device according to the present invention;

5 is a control flowchart for receiving a SIP-Phone Wireless Bridge terminal device according to the present invention;

6 is a control flowchart for transmission of a SIP-Phone Wireless Bridge terminal device according to the present invention.

********** Symbol description of the main parts of the drawing **********

10: power supply 20: Ethernet interface

30: PSTN interface unit 40: IS-95C / UMTS interface unit

50: Bluetooth module unit 60: memory unit

70: central control unit 80: codec unit

90: input / output unit

The configuration of the SIP-based wireless bridge integrated terminal device of the present invention for achieving the above object, in the terminal device for interfacing with a plurality of communication networks, and wirelessly communicating with the mobile communication terminal,

A power supply unit for supplying power so that the terminal device is always in a standby state, an internal interface unit for interfacing with the plurality of communication networks, and a Bluetooth module for wireless network support for communication between the terminal device and the mobile communication terminal. A memory unit for storing a control program and a parameter generated during program execution, a central control unit controlling each unit based on a program stored in the memory unit, and the central control unit. And a codec unit for coding and decoding the processed data, and an input / output unit for outputting data decoded through the codec unit or receiving data and outputting the data to the codec unit.

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

Figure 2 is an embodiment of a SIP-Phone Wireless Bridge terminal device according to the present invention, when shown to be transmitted to a conventional mobile communication terminal or PDA as shown in the Internet network using the SIP-based wireless bridge integrated terminal device It is shown that the communication is possible by transmitting to a wireless bridge terminal device of the other party through a PSTN or a mobile communication network to the other party's mobile communication terminal or PDA.

In addition, each network is connected to a SIP server for processing data through each network according to the SIP.

3 is an internal configuration diagram of a SIP-Phone Wireless Bridge terminal device according to the present invention, the power supply unit 10, the interface unit 20, 30, 40 for telecommunications, the Bluetooth module unit 50, the memory unit ( 60), the central control part 70, the codec part 80, and the input / output part 90 are comprised.

In more detail, the power supply unit 10 supplies power so that the terminal device maintains the standby state, and the interface unit for the telecommunication is a PSTN interface 30 for supporting the PSTN, and an Ethernet interface 20 for supporting the Internet network. ) And an IS-95C / Universal Mobile Communication System (UMTS) interface 40 for supporting a mobile communication network.

The IS-95C / Universal Mobile Telecommunications System (UMTS) interface 40 is a code division multiple access for digital mobile phones operating in the 800 MHz band and PCS in the 1.9 GHz band in the United States. CDMA) standard, which enables a conventional CDMA mobile phone to connect and make a call to the SIP-based wireless bridge integrated terminal device of the present invention.

In addition, the Ethernet interface 20 enables communication with a PDA or the like through the Internet.

As described above, the SIP-based wireless bridge integrated terminal device of the present invention can accommodate both communication through the PSTN, communication through the Internet network, and communication through the mobile communication network through the respective interfaces.

The Bluetooth module unit 50, which increases the efficiency of mobility and resource sharing by providing a wireless network environment for short-range communication, enables communication at a distance of 10m to the 2.45GHz band, thereby ensuring user mobility in an office or home environment. Do it.

It also allows you to quickly synchronize with information in your desktop, notebook computer, PDA, and more.

In other words, when receiving with an existing CDMA terminal in an indoor environment, the communication received through the PSTN network, the communication received through the Internet network, and the communication received through the mobile communication network using the SIP-based wireless bridge terminal of the present invention. It is also possible with existing CDMA terminals with Bluetooth.

In addition, when making an outgoing call to an existing CDMA terminal in an indoor environment, if a predetermined number is set for communication between the SIP-based wireless bridge terminal and the existing CDMA terminal of the present invention, the predetermined number is pressed first, and then the calling number is pressed. The present invention is sent through a SIP-based wireless bridge terminal.

However, when communicating via conventional CDMA that is not equipped with the Bluetooth module unit, it can be used by connecting to the USB port.

The memory unit 60 stores a control program for controlling the networks and parameters generated during program execution, and the central control unit 70 controls each unit based on a program stored in the memory unit 60. .

The codec unit 80 performs coding and decoding of data processed by the central control unit 70.

The input / output unit 90 outputs the decoded data through the codec unit 80 or receives data and outputs the data to the codec unit 80. A headphone for listening to the received voice signal and a voice signal to be transmitted A microphone for inputting an input, a display unit for indicating which network a received signal is coming through, a speaker for outputting a ring tone, a key button for inputting a telephone number or an IP number, and video communication It consists of a USB camera.

In addition, it is possible to implement a network that can distinguish the received signal through the ring tones.

4 is an operation flowchart of a SIP-Phone Wireless Bridge terminal device according to the present invention. First, it is determined whether a key button signal is input (S10). Determine (S14).

If the ring signal is not input as a result of the determination in step S14, the process returns to the standby state, and if the ring signal is input, distinguish and control (S11) which network the input voice signal is through the signal and perform the step (S11). After the processing, the signal data is coded (Coder / Decoder; CODEC) (S17). If the key button signal is input as a result of the determination in step S10, the key button signal is processed according to the SIP (S12), and then the frame (call control frame) processing (S13) is determined whether the counterpart responds (S16). If the result of the determination in step S16 is answered, the voice signal is subjected to CODEC processing (S17), and again according to SIP (S17), and then a frame (voice frame) processing (S19) is performed to make a telephone call with the other party ( S20). If it is determined in step S16 that the other party does not answer, the call is transmitted (S15) and ends.

FIG. 5 is a control flowchart for receiving a SIP-Phone Wireless Bridge terminal device according to the present invention. In particular, the SIP-Phone Wireless Bridge terminal device may accommodate both a PSTN network, an Internet network, and a mobile communication network as described above. There is a flowchart illustrating reception control according to each network when the terminal device receives it.

First, it is determined whether a ring signal is input (S20). If the ring signal is input as a result of the determination of the step, it is determined whether it is input through the PSTN network (S21).

If the determination result of the step (S21) is input through the PSTN network, the input voice data is subjected to CODEC processing (S22) and processed according to SIP (S23), and then frame processing (S24) to make a call with the other party (S25). do. If it is determined in the step S21 that the input is not through the PSTN network or the input through the internet network (S26), and if the result of the determination in the step S26 is the input through the internet network (S22, S23, S24) Make a call with the other party through (S25).

In addition, as a result of the determination in step S26, it is determined whether the input is through the mobile communication network or not through the internet network (S27). As a result of the determination in step S27, if the input is not through the mobile communication network, the method returns to step S20 to determine whether the ring signal is input, and if the input is through the mobile communication network, the call is made through the steps S22, S23 and S24. (S25).

6 is a control flowchart for transmitting a SIP-Phone Wireless Bridge terminal device according to the present invention. In particular, the SIP-Phone Wireless Bridge terminal device may accommodate both a PSTN network, an Internet network, and a mobile communication network as described above. There is a flowchart illustrating transmission control according to each network when the terminal device transmits.

First, it is determined whether the key button signal is input (S30). If the key button signal is input as a result of the determination of the step, it is determined whether to output through the PSTN network as a result of the determination of the step (S31).

As a result of the determination in step S32, in order to output through the PSTN network, the audio data to be transmitted is subjected to CODEC processing (S32), and the signal processed by the CODEC is processed according to SIP (S33), and then frame processing (S34) Make a phone call with (S35). If it is determined in step S32 that the output is not through the PSTN network, it is determined whether the output is through the Internet network (S36). If the output is through the Internet network, the communication is performed with the other party through steps S33 and S34 (S35). .

In addition, if it is determined that the output of the mobile communication network is not output through the internet network (S37) as a result of step S36 (S37), if it is not output through the mobile communication network, the standby state is maintained, and the mobile communication network If the output through the step (S33, S34) through the call to the other party (S35).

SIP, a protocol used in the present invention, is a VoIP (Voice Over Internet Protocol) communication protocol that provides multimedia conferencing and Internet telephony services through a stand-alone or SIP-server in an existing Internet network. Application level signaling protocol for creating, modifying and removing sessions. This allows you to invite other participants to the session or send data describing the type of media the attendee uses.

SIP is used to provide various services by supporting individual mobility without being complicated in protocol stack and call setup, compared to H.323, which is a conventional standard protocol.

Although the invention has been particularly shown and described with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications are possible without departing from the spirit and scope of the invention. Accordingly, the invention is limited only by the claims.

As described above, the present invention can accommodate the existing network in one terminal, and can be used more conveniently by any network through a single terminal, it is more convenient to use, enabling the wireless network configuration of the same type of wireless Network resources supporting the interface can be used, and in case of short-range communication in-house or at home, the user's mobility can be guaranteed for convenience.

In addition, it is possible to provide high quality multimedia service with more efficient and easy equipment in terms of cost because communication is possible through internet network, mobile communication network, and PSTN using existing CDMA mobile phone already used by user. It can be effective.

Claims (8)

A terminal apparatus for communicating wirelessly with a mobile communication terminal by interfacing with a plurality of communication networks, Power supply means for supplying power so that the terminal apparatus is always in standby state, an Ethernet interface for supporting the Internet network to interface with the plurality of communication networks, a PSTN interface means for supporting the PSTN, and a mobile communication network Internal interface means, including IS-95C or UMTS interface means for support of, Bluetooth module means for wireless network support for communication between the terminal device and the mobile communication terminal, and control to support the network Storage means for storing necessary control programs and parameters generated during program execution, central control means for controlling each part based on a program stored in the memory means, and coding and decoding of data processed by the central control means. Codec means and decoded through the codec means. Displaying a headphone for listening to a received voice signal, a microphone for inputting a voice signal to be transmitted, and a network through which the received signal comes in to output data or to receive data and output the data to a codec means. SIP-based wireless bridge terminal device comprising a display unit, a speaker for outputting a ring tone, a key button for inputting a telephone number or an IP number, and an input / output means composed of a USB camera for supporting video communication. delete. According to claim 1, The Bluetooth module means, SIP-based, characterized in that the existing CDMA terminal to enable all the communication through the PSTN, the Internet network, mobile communication network to move freely within a short distance Radio bridge integrated terminal device. delete. Determining whether a key button signal has been input to determine whether the key button signal has been input and performing a predetermined operation according to the step; a SIP processing step of processing the input signal according to the SIP; and a frame (call control frame A key button input determination step comprising a frame processing step of processing; A ring signal input determination step of determining whether a ring signal is input if a key button signal is not input as a result of the determination of the key button input determination step; A network discriminating step of discriminating or controlling a signal through a network after performing the response performing step; Codec processing an input voice signal to perform data processing according to the network discrimination result, SIP processing the codec processed data, and processing the SIP processed data into a frame (voice frame). The control method of the SIP-based wireless bridge integrated terminal device consisting of a signal processing step comprising the step of making a telephone call with the other party. delete. The method of claim 5, wherein the network determination step, A first step of determining whether an input signal is input through the PSTN when a ring signal is input; A second step of performing a codec process on the input signal and performing frame processing with the SIP process and talking to the other party if the signal is input through the PSTN as a result of the determination of the first step; A third step of determining whether a signal input through a PSTN is a signal input through an internet network as a result of the determination of the first step; A fourth step of returning to the second step if the signal inputted through the internet network is determined as the third step; A fifth step of determining whether the signal is input through the mobile communication network or the signal input through the internet network as a result of the determination in the third step; And a sixth step of returning to the second step if the signal inputted through the mobile communication network is determined as the fifth step. delete.