KR100501325B1 - The apparatus and method for data service using wireless VOIP terminal - Google Patents

Abstract

The present invention relates to wireless data services, and more particularly, to an apparatus and method for extending data services using a wireless VOIP terminal. In order to use the wireless data service, a separate device for data transmission and reception is required, similar to the use of a wired data network, and a device or a terminal without an interface for the wireless data service cannot receive the wireless data service. In the present invention, even in the case of a device or a terminal that does not have an interface for a wireless data service, the wireless VOIP terminal device can be switched to a wireless transmit / receive adapter, thereby facilitating the expansion of a data network linked with a device without a data service interface and providing mobility. In addition to guaranteeing, various services can be implemented by mode selection.

Description

Apparatus and method for data service using wireless VIP terminal device

The present invention relates to wireless data services, and more particularly, to an apparatus and method for extending data services using a wireless VOIP terminal.

As a method for implementing a wireless data service, Bluetooth, home RF, wireless LAN (WLAN), and the like are used. Bluetooth refers to a standard, short-range wireless communication technology, and products for implementing bidirectional short-range communication between portable devices such as mobile phones, PDAs, and notebook computers at low cost without complicated wires. Bluetooth has its own security features and can be used as a high security communication medium such as e-commerce. In addition, if you use a handset, you can call anytime, wherever you are, and you can use your phone as a wireless Internet phone without paying for your office and at home. You can use PSTN and cellular phones (Cellular, PCS), so you can use three phones with one phone. You can also quickly synchronize with information on your desktop or laptop computer, send and receive faxes, or print out. In general, full cooperation with all portable and stationary computer devices is possible. Bluetooth technology requires that each device be equipped with a low-cost transceiver chip.

Each device is equipped with a microchip transceiver that is not used previously and can transmit and receive at 2.45 GHz, the world's available frequency band (some countries may have slightly different frequency bands). In addition to data, up to three voice channels can be used. Each device has a unique 48-bit address from the IEEE 802 standard. Connections can be point-to-point or multipoint. The maximum range of communication is 10m. Data is transmitted at 1 Mbps (up to 2 Mbps in 2nd generation technology). The frequency hop design enables devices to communicate even in areas with enormous amounts of electromagnetic disturbances and provides built-in encryption and verification.

Home RF has a 50m operating range, which is longer than Bluetooth and is 2 Mbps faster. Four voice channels and one data channel have the advantage of transmitting data and voice simultaneously. However, when used in a mobile device may interfere with Bluetooth. Wireless LANs follow IEEE 802.11 rules. One or more access points are installed in the network and connected to a wireless LAN with devices ranging from tens to hundreds of meters.

On the other hand, VoIP (Voice over Internet Protocol) is a term for a voice processing technology that provides a voice service by putting voice in the form of packets in an IP network, which is the basis of the Internet network, unlike a conventional circuit switched telephone. In general, this means that voice information is sent in digital form within discrete packets, rather than traditional protocols based on circuits such as PSTN, a public switched telephone network. The main advantage of VoIP and Internet telephony technology is that it integrates telephone service by utilizing existing IP network so that telephone users can receive long distance and international phone service in internet and intranet environment with only local call charge.

In addition, VoIP is an integrated technology from the network to the subscriber terminal for combining voice (PSTN) and data (IP network) to provide cheap voice services, and flexible services in combination with various communication means such as text and multimedia other than voice. It can be provided. VoIP uses RTP to support packets arriving in time, in addition to the original IP functionality. Using public networks makes it difficult to guarantee current quality of service (QoS). Better service can be achieved by using a private network managed by an independent company or an Internet telephony service provider (ITSP). To use VoIP, companies must install VoIP equipment at the gateway. The gateway receives the voice transmission divided into packets from users in the company and sends it to other parts of the intranet or to the PSTN using the T-1 or E1 interface.

Meanwhile, in order to use the data service as described above, a separate apparatus for transmitting and receiving data is required. In addition, in the conventional case, when a limited data line is used in an office or a home by using a wired data network, a number of people receive a service at the same time, and there is a difficulty in moving a data service to another place. In this case, in order to use a wireless data service instead of a wired data network, a separate device is required as in the use of a wired data network. Therefore, a device or a terminal without an interface for using a data service cannot receive a data service, so a device or a terminal without an interface for a wireless data service cannot receive a wireless data service.

The present invention has been made to solve the above-mentioned problems, and by converting the wireless VOIP terminal device according to the present invention into a WLAN or Bluetooth adapter and interworking with a device without a data service interface, it is easy to expand the data network and provide convenience of mobility. For the purpose.

In order to achieve the above object, the wireless VOIP terminal apparatus according to the present invention includes a radio front end (RF) unit 100, a MAC / baseband processing unit 103, a control unit 104, a wired interface unit 105, The memory unit 106 and the input / output units 107 and 108 are configured.

The wireless adapter mode uses a wireless transmission / reception method used by a wireless VOIP terminal for wireless connection, that is, wireless local area network (WLAN), Bluetooth, etc., to connect to a wired interface with a device without an interface for data service. Mode to receive data service. The connection between a wireless VOIP terminal and a device without a data service interface is connected by a wired interface such as USB or IEEE1394.

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

1 is a diagram illustrating an internal configuration of a wireless VOIP terminal device. There is an RF unit 100 for wireless transmission / reception, and there is a MAC / baseband processing unit 103 capable of processing analog data. In this case, WLAN or Bluetooth may be used as a transmission / reception method. In addition, there is a wired interface unit 105 that performs a role of connecting a terminal or a device having no interface for data service and a wireless VOIP terminal by wire.

The RF (Radio Front End) part is divided into a transmitter 101 which is in charge of transmission internally and a receiver 102 which is in charge of reception. Transmitter 101 in charge of the transmission modulates the baseband low digital signal through RF (Intermediate Frequency) to RF (Radio Frequency) and then transmits the output by increasing the power through the PA (Power Amplifier). When transmitting by WLAN, transmit at 2.4 GHz level. The receiver 102 responsible for reception demodulates the transmitted signal into a low digital signal of the baseband through a low noise amplifier (LNA) and an IF unit.

Each of the MAC / baseband part 103 may be implemented as a separate device, and in some cases, may be implemented as a single chip. The baseband unit 103 plays a role of controlling the RF unit 100 so that an AGC (Automatic Gain Control) function may be performed, and the MAC unit plays a role of allowing a wireless protocol to be performed.

The controller 104 is responsible for controlling a radio physical layer such as the MAC / baseband unit 103 and the like and is composed of a CPU. When switching modes, the controller 104 enables mode selection through on / off of the wired interface unit 105.

The memory unit 106 is composed of a RAM, a ROM, and the like, and stores a user interface program and other data, which are programs for operating the control unit 104. The memory unit may be included in the control unit or may be implemented as a separate memory unit. A serial port, USB, IEEE 1394, or the like may be used for the wired interface unit 105.

The input / output units 107 and 108 may include a key input unit 107 for inputting a command such as a mode selection by a user, and a display unit 108 for identifying a service usage situation.

A device that does not have an interface for data service is connected to the data service network or LAN network as follows. When the user wants to select and use the wireless adapter mode while operating as the wireless VOIP terminal, the controller 104 switches the wireless VOIP terminal to the wireless adapter mode. In this case, the control unit 104 may select a mode through shielding of the wired interface unit. If you do not need the terminal's own power supply, such as USB, power off the terminal. The user connects the wireless VOIP terminal with a wired cable with a device that does not have an interface for data service. In order to use a device without an interface for data service according to the present invention, software for controlling the wireless VOIP terminal to be operated as a wireless adapter is necessary. That is, a user interface program that allows a user to control a wireless VOIP terminal should be installed.

As described above, when the user uses the data service and selects the wireless VOIP terminal mode (normal mode) again through the user interface program or the wireless VOIP terminal, the controller of the wireless VOIP terminal turns on the power of the terminal and operates as a wireless VOIP terminal. do. At this time, the controller switches the wired interface unit to the off state. If the control unit maintains the wired interface unit in the on state, the wireless VOIP terminal operates in the wireless adapter mode in which the wired interface unit is in operation, and in the case of maintaining the wired interface unit in the off state. As an operation stop state of the interface unit, it functions as a wireless VOIP terminal in normal mode.

2 is a diagram illustrating the operation of a wireless data service. As shown, the wireless VOIP terminal 200 according to the present invention is able to connect to the data service network, that is, the LAN network 204, even for a terminal or device that does not have an interface for data service. That is, in the case of a terminal or a device without an interface for data service, when connecting to the wired interface unit 105 of the wireless VOIP terminal 200 through a wired cable 201 or the like, the base station (access) via WLAN or Bluetooth is required. point 203 can be transmitted.

The terminal or device receiving the transmitted data may receive the desired data through the LAN 204 connected to the access point 203. For example, it is possible to output desired data from a transmitting terminal 202 such as a laptop without a network apparatus through a remote receiving terminal 205, such as a fish or a printer, by a wireless transmission method. Therefore, even when a laptop without a network device is connected to the wireless VOIP terminal 200 according to the present invention, when the data is transmitted, the receiving terminal side 205 to which an IP is designated through the LAN 204 connected to the receiver station 203 is transmitted. It is possible to transfer data.

As a result, according to the present invention, the data service is possible even for a device without a data service interface, thereby facilitating the expansion of the data service network and the mobility according to the wireless data network. In addition, by enabling the wireless VOIP terminal 200 to be interoperable with other devices, it is possible to broadly extend the limits of its own functions. For example, when connected with devices such as desktop or notebook fish, various functions of PC can be used. In addition, when interlocked with office automation equipment such as printers, copiers, and fax machines with wired interfaces (USB, IEEE1394, etc.), it enables mobility security of office automation equipment and common use of equipment by multiple users.

3 is a flowchart illustrating a mode switching method according to the present invention. First, the initial mode is a normal mode and operates as a normal wireless VOIP terminal (S1). That is, normal wireless voice transmission and reception are performed. At this time, in order to use the wireless VOIP terminal according to the present invention as a wireless adapter capable of transmitting and receiving wireless data, the mode must be changed. That is, by selecting a wireless adapter mode other than the wireless VOIP terminal mode (S2), wireless data transmission and reception are possible even in a terminal without a separate interface for wireless data transmission and reception. When the wireless adapter mode is selected, the controller controls the wired interface unit to operate so that the wireless VOIP terminal function does not operate (S3). In this case, in order to transmit data from a terminal or a device that does not have an interface for a data service, a wireless VOIP terminal device must be connected through a wired cable (S4). The wired cable connected from the terminal or the device is connected to the wired interface of the wireless VOIP terminal device to enable wireless data transmission and reception (S5). If the user wants to use the normal wireless VOIP function again, the wireless VOIP mode is selected (S6). At this time, the control unit does not operate the wired interface unit to perform the operation of the wireless VOIP terminal in the wireless VOIP mode (S7). As a result, conventional wireless VOIP transmission and reception is performed.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

In the present invention, even in the case of a device or a terminal that does not have an interface for a wireless data service, the wireless VOIP terminal device can be switched to a wireless transmit / receive adapter, thereby facilitating the expansion of a data network linked with a device without a data service interface and providing mobility. In addition to guaranteeing, various services can be implemented by mode selection.

1 is a block diagram of a wireless VOIP terminal device

2 is a configuration diagram of a wireless data service operation

3 is a flowchart illustrating a mode switching method according to the present invention.

********* Explanation of symbols on the main parts of the drawing *********

100: RF (Radio Front End) section 101: transmitter

102: receiver 103: MAC / baseband processing unit

104: control unit 105: wired interface unit

106: memory unit 107: key input unit

108: display unit 200: wireless VOIP terminal

201: wired cable 202: transmitting terminal

203: base station 204: LAN

205: receiving terminal

Claims (9)

In the wireless VOIP terminal providing a wireless data service, RF unit for performing modulation and demodulation for wireless transmission and reception; A MAC / baseband processor for processing analog data by controlling the RF unit and allowing a wireless protocol to be performed; A wired interface unit connected to a terminal or a device for determining a power supply based on an input control signal and providing a data service; When the wireless VoIP terminal mode is selected, the power to the wired interface unit is cut off, and when the wireless adapter mode is selected, a signal such as controlling to supply power to the wired interface unit is outputted to the MAC / baseband processor, the wired interface unit, and the like. A control unit; Wireless VOIP terminal device comprising a. The apparatus of claim 1, further comprising: a separate memory unit for storing a user interface program and other data which are programs for operating the control unit; Wireless VOIP terminal device further comprising. delete delete In the data service method using a wireless VOIP terminal device, If the user selects a wireless adapter mode, controlling to supply power to the wired interface unit and to drive the wired interface unit; Connecting a wireless VOIP terminal with a terminal or device for providing a data service and transmitting and receiving wireless data through the wireless VoIP terminal; Controlling not to operate by cutting off power to the wired interface unit when the user selects the wireless VOIP mode; Data service method comprising a. delete delete delete The method of claim 1, The wireless transmission and reception is a wireless VoIP terminal device, characterized in that using a wireless network communication method such as WLAN, Bluetooth.