KR20020042107A - Internet phone for voice communication and data transmission on wireless internet - Google Patents

Abstract

PURPOSE: An Internet phone for wireless Internet phone calls and wireless Internet data communication is provided to offer a wireless Internet phone comprising a wireless LAN data communication function, a generic voice call function, and a gateway function. CONSTITUTION: An Internet phone for wireless Internet phone calls and wireless Internet data communication consists of a wireless LAN data communication block(150) and an Internet voice call supporting block(140). The Internet phone also comprises an RF transmitting/receiving module(60) composed of an antenna(10), a switch(20), a transmitting amplifier(30), a receiver(40), and an RF/IF converter(50). A baseband processing unit(70), connected with the RF transmitting/receiving module(60), executes DSSS(Direct Sequence Spread Spectrum) modulation/demodulation operation after converting an inputted IF signal into a digital signal through an A/D converter or a digital signal into an analog signal through a D/A converter. An MAC(Media Access Control unit)(80) converts a baseband signal into an ethernet communication protocol signal and vice versa. The MAC(80) is connected with an MCU(Micro Controller Unit)(100) through a PCI adapter(90). The MCU(100) converts an ethernet signal into a voice signal or a voice signal into an ethernet signal. The output signal of the MCU(100) is decoded through a codec(120) and transferred to a receiver(130). The Internet phone user voice transferred to the receiver(130) is encoded through the codec(120) and transferred to the MCU(100).

Description

Internet Phone for Wireless Internet Phone Calls and Wireless Internet Data Communication {INTERNET PHONE FOR VOICE COMMUNICATION AND DATA TRANSMISSION ON WIRELESS INTERNET}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless Internet phone or an access point for wireless Internet communication. The present invention relates to a voice over internet protocol (VoIP) function as well as a wireless LAN data communication function and a gateway. A wireless internet phone including a gateway function is provided.

Today's Internet users can communicate with remote computer terminals or wired or wireless terminals through the Internet. That is, the Internet phone enables a computer terminal or a mobile communication terminal connected to the Internet network to access an internet terminal or a mobile communication terminal at a remote location.

In order to implement a wireless LAN, a wireless LAN card is required for a notebook computer or a desktop computer. An access point (AP) is a device used for wireless connection with an existing wired LAN (connected with a hub or a switch) and provides data transmission and buffering functions. An access point provides access to dozens or hundreds of clients. It supports users and can be used for several kilometers. The IEEE 802.11 WLAN structure is based on a cellular structure divided into cells, with each cell coordinated by a base station called the access point described above. On the other hand, the access point is connected to a backbone network called a distribution system (DS).

At this time, the distribution system may be a general Ethernet (Ethernet), the WLAN itself may be a backbone network. In the above-described wireless LAN system according to the related art, since only the wireless LAN data communication function is provided to the client terminal, it is inconvenient to provide a general voice telephone call function service to the client terminal.

Moreover, the Internet phone according to the prior art provides only a function (VoIP) for making a call by connecting to the Internet network by wire, and thus requires a wireless LAN data communication function or a gateway function. There have been inconveniences and technical difficulties in performing voice communication (VoIP) function through wireless data communication and Internet network.

Accordingly, a first object of the present invention is to provide a wireless Internet phone including a wireless LAN data communication function, a general voice call function, and a gateway function.

A second object of the present invention is to provide a wireless Internet phone in which, in addition to the first object, it is possible to make simultaneous use of the Internet by making a telephone call.

In addition to the first object, a third object of the present invention is to provide a wireless Internet phone capable of providing a unified message system (UMS) service including a wireless LAN data communication function and a general voice call through an Internet network. To provide.

1 is a view showing the configuration of a wireless Internet phone according to the present invention.

2 is a diagram showing the configuration of a wireless Internet system to which a wireless Internet phone according to the present invention is applied.

Figure 3 is a block diagram showing an embodiment of a wireless Internet phone according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: antenna

20: switch

30: transmit amplifier

40: receiver

50: RF / IF converter

60: RF transceiver module

70: baseband processing unit

80: media access control unit (MAC)

90: PCI Adapter

100: micro controller unit (MCU)

110: interface port

120: codec

130: handset

200: wired Ethernet network

210: gateways and exchanges

211: wireless

212: wired

220: access point

230: Wireless Internet Phone

240: client terminal

301: Ethernet port

303: Ethernet buffer

304: Ethernet controller

305 CPU core

In order to achieve the above object, the present invention provides a wireless Internet phone for wirelessly providing a voice call and wireless LAN data communication of the client terminal via the Internet network, receiving an RF signal transmitted from the Internet network, the client terminal A wireless transmission / reception module for transmitting the voice telephone message or digital data to be transmitted to the access point; A base band processing unit connected to the wireless transmit / receive module to perform signal processing at baseband; A media access control unit connected to the base band processing unit to convert a baseband signal into an Ethernet communication protocol signal or an Ethernet communication protocol signal into a baseband signal; A microcontroller unit for converting the Ethernet communication protocol signal into a voice signal (VoIP) or converting the voice signal into an Ethernet communication protocol signal; A codec unit connected to the micro controller unit to encode or decode a speech signal; An internet phone connected to the microcontroller unit and including an interface port unit for communicating data with the client terminal.

Hereinafter, a preferred embodiment of a wireless Internet phone according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a wireless Internet phone according to the present invention. The wireless Internet phone shown in FIG. 1 is wirelessly connected to an access point equipped with a conventional wireless LAN card and can be used for internet voice telephone calls as well as wireless LAN data communication. The Internet phone itself may be configured as an access point (AP) connected to an access point to wirelessly connect a backbone Internet network as a gateway for wireless Internet communication.

In addition, the Internet phone according to the present invention can be connected to the client terminal by wire or wirelessly by mounting the RS232 or RJ-45 port or the like to provide data communication with the Internet network.

1, the Internet phone according to the present invention is characterized in that the wireless LAN (LAN) data communication block 150 and the Internet voice telephone call support block 140 is characterized in that the present invention. It is characterized by configuring a wireless Internet phone with the function of LAN card) and Voice over Internet service (VoIP) function.

Referring back to FIG. 1, the present invention provides an RF transmission / reception module 60 including an antenna 10, a switch 20, a transmission amplifier 30, a receiver 40, and an RF / IF converter 50. It consists. In addition, the baseband processing unit 70 is connected to the RF transceiver module to perform signal processing at baseband. That is, the baseband processing unit converts an input IF signal into a digital signal through an A / D converter, or converts a digital signal into an analog signal through a D / A converter during transmission, thereby direct DSSP modulation and Perform demodulation operation.

The media access control unit (MAC) 80 according to the present invention serves to convert the baseband signal into an Ethernet communication protocol signal and vice versa. In IEEE 802.11 WLAN, a collision sense multiple access / collision avoidance (CSMA / CA) scheme is used. The media access control unit according to the present invention has a role of receiving data requested to be transmitted from the computer terminal or sending the received data to the computer through an interface with the computer terminal, flow control through a CSMA / CA method, and a switching role during transmission and reception. In charge of.

Meanwhile, the media access control unit 80 is connected to the micro controller unit (MCU) 100 through a PCI adapter 90, and the micro controller unit 100 converts an Ethernet signal into a voice signal or converts a voice signal into an Ethernet. It converts into a signal. In addition, the output signal of the micro-controller unit 100 is decoded through the codec 120 to be delivered to the handset 130, and the voice of the Internet phone user transmitted to the handset 130 is encoded through the codec 120 to make the micro It is delivered to the controller unit 100.

Meanwhile, the digital data signal processed by the microcontroller unit 100 may be connected to a computer through the interface port 110 to provide an additional service through an internet connection. As a preferred embodiment of the interface port 110 according to the present invention can be used, such as RS232, RJ-45, USB port, and as a terminal connected to the interface port 110, a handy computer, laptop computer, desktop computer, personal portable A terminal PDA, an MP3 player, or the like may be employed.

That is, the present invention can simultaneously provide the wireless LAN data communication function and the voice telephone (VoIP) service function under the control of the microcontroller unit 100 by the handset 130 and the codec 120 through the interface port 110. . Meanwhile, the RF signal transmitted and received by the RF transmission / reception block 60 of the Internet phone according to the present invention shown in FIG. 1 through the antenna 10 is an existing Ethernet network (Ethernet network; IEEE 802.3) or another access point configured by wire. A wireless Ethernet network (IEEE 802.11) through an access point (AP) can be connected to provide an Ethernet environment to a wirelessly connected client terminal.

2 is a diagram showing the configuration of a wireless Internet system to which an Internet phone according to the present invention is applied. Referring to FIG. 2, the Internet phone according to the present invention can perform the function of the access point 220 in the wireless Ethernet network, and the voice phone (VoIP) function and the client terminal 240 as the wireless Internet phone 230 itself. Can provide wireless Internet access.

Referring to FIG. 2, the wired Ethernet network 200 receives a signal from a wired 212 or a wireless 211 through a gateway and an exchange 210 and a client 240 wirelessly connected through a wireless Internet phone 230. Send and receive data to transmit the data transmitted from the Ethernet to the client 240, or transmits the data requested by the client 240 to the Ethernet network 200.

The access point 220 according to the present invention includes an access point capable of transmitting service-oriented data apart from the conventional simple functions. That is, it is based on a service-oriented transmission format such as Voice over IP (VoIP). VoIP service is to configure a voice service, such as a conventional telephone service through the Internet network 200, the difference from the existing Ethernet transmission requires a quality of service (Q.S) requires a certain bandwidth.

3 is a block diagram showing an embodiment of an Internet phone according to the present invention. Referring to FIG. 3, a CPU core of an ARM7TDM1 series is a central control unit for processing an Ethernet packet in order to provide other services such as web browsing and file transfer in addition to the VoIP function and the Ethernet service function according to the present invention. 305 may be used, and after receiving a signal through the Ethernet controller 304, the service is provided to the client for each service.

On the other hand, the Ethernet signal entered through the RJ-45 Ethernet port 301 is classified into the Ethernet controller 304 through the Ethernet buffer 303, and then through the CPU 305 through a wireless LAN card (311); ) Is delivered to the user.

In an IEEE 802.11 wireless LAN, a carrier sense multiple access / collision avoidance (CSMA / CA) scheme is basically used. The media access controller unit 80 according to the present invention transmits data requested from a computer through an interface with a PCMCIA slot. It plays a role of sending input or received data to a computer terminal, and performs a role of controlling flow or switching of transmission and reception through a CSMA / CA method.

The foregoing has outlined rather broadly the features and technical advantages of the present invention to better understand the claims of the invention which will be described later. Additional features and advantages that make up the claims of the present invention will be described below. It should be appreciated by those skilled in the art that the conception and specific embodiments of the invention disclosed may be readily used as a basis for designing or modifying other structures for carrying out similar purposes to the invention.

In addition, the inventive concepts and embodiments disclosed herein may be used by those skilled in the art as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. In addition, such modifications or altered equivalent structures by those skilled in the art may be variously changed, substituted, and changed without departing from the spirit or scope of the invention described in the claims.

As described above, the present invention implements an Internet phone with both a wireless LAN card function and a Voice over IP (VoIP) function, so that the conventional wireless phone unlike the conventional Internet phone that provides only a conventional wired / wireless LAN card or a general telephone function for delivering only Internet information. Provided is a terminal having a communication relay function.

As a result, data transmission / voice / fax data / UMS, etc. may be performed by designating and transmitting and transmitting an arbitrary frequency transmitted and received from devices having access point and access point functions including or without a base station or gateway function to a specific bandwidth. It is possible to transfer data to a communication device such as a handy computer, a notebook computer, a desktop computer, a personal digital assistant (PDA), an MP3 player, etc. using a communication cable or connector such as USB, RJ-45, or RS232.

Claims (11)

A wireless Internet phone that wirelessly provides wireless LAN data communication between a voice call and a client terminal through an Internet network, A wireless transmission / reception module configured to receive an RF signal transmitted from an access point connected to the internet network, generate a voice telephone message or digital data of the client terminal to be communicated through the internet network, and generate the RF signal to the access point as an RF signal; A base band processing unit connected to the wireless transmit / receive module to perform signal processing at baseband; A media access control unit connected to the base band processing unit to convert a baseband signal into an Ethernet communication protocol signal or to convert an Ethernet communication protocol signal into a baseband signal; A microcontroller unit for switching the Ethernet communication protocol signal to a voice signal (VoIP) for Internet phone call or digital data for Internet use of the client terminal, or converting the voice signal or the digital data to an Ethernet communication protocol signal ; A codec unit connected to the micro controller unit to encode or decode a voice signal for an internet telephone call; An interface port unit connected to the microcontroller unit to communicate data with the client terminal Internet phone including a. The Internet phone according to claim 1, wherein the interface port unit comprises one of USB port, RJ-45, RS232, or a combination thereof. The Internet phone according to claim 1, wherein the Internet network includes any one or a combination of a wired Ethernet network (IEEE 802.3) or a wireless Ethernet network (IEEE 802.11) through another access point. The Internet phone of claim 1, wherein the client terminal comprises any one or a combination of an Internet phone, a handy computer, a notebook computer, a desktop computer, a personal digital assistant (PDA), and an MP3 player. The Internet phone of claim 1, wherein the voice phone and digital data wirelessly transmitted by the Internet phone include one or a combination of wireless communication LAN data, voice, integrated message (UMS), and VOD fax data. . The Internet phone according to claim 1, wherein the Internet phone functions as a repeater as an access point for wireless Internet use by being connected to an access point connected to the Internet network through a card slot. The Internet phone of claim 1, wherein the Internet phone further includes a handset for a voice call (VoIP) call. The Internet phone according to claim 1, further comprising a PC adapter between the media access control unit and the micro controller unit. A wireless Internet phone that provides an Internet telephony function wirelessly through an access point from an Internet network, and simultaneously provides a client terminal and Internet data communication through a wireless LAN. A communication apparatus for relaying voice telephone messages and digital data wireless communications to a client terminal wirelessly with an internet network, An access point receiving the transmission data from the Ethernet network and delivering the transmission data to the wireless client or transmitting the request data of the wireless client to the Ethernet network; A micro-controller unit for classifying an Ethernet signal from the access point into a voice signal (VoIP) and a digital data packet so as to enable wireless voice telephone call and wireless LAN data communication through the Internet; A PC-eye adapter for interfacing the microcontroller unit with the access point; And A communication port for connecting the output of the microcontroller unit to the client terminal Internet phone including a. The Internet phone according to claim 10, wherein the Internet phone has a PCMCIA card slot.