KR100373502B1 - A Cellular Phone Which can Directly Communicate with Another Cellular Phones - Google Patents

Abstract

The present invention relates to a wireless terminal capable of direct communication between terminals, wherein a first terminal to make a call transmits and receives a necessary signal to or from a second base station by wire or wirelessly without a call with a base station. Provides a means for allowing a second terminal to transmit and receive a signal to be transmitted and received with the base station so that a call can be made even when the battery charge of the first terminal is low.

Description

A cellular phone which can directly communicate with another cellular phone

The present invention relates to a wireless terminal, and more particularly, to a wireless terminal that communicates directly between terminals so that a call can be made even when a battery charge is low.

In general, a mobile communication terminal can make a call with another user by transmitting and receiving a required signal with a base station using a wireless communication means provided in itself. At this time, if the radio wave condition with the base station is bad, the terminal needs to transmit and receive a signal with a high output power, and thus the power consumption of the battery increases, and when the battery charge of the terminal is low, the call cannot be made.

Increasing the capacity of the battery in order to increase the talk time, the weight and volume becomes inconvenient to carry, so the conventional technology for solving this problem is to separate the mobile communication terminal into the main body and the mobile device, the mobile phone has a microphone, speaker, keypad, The main body is provided with only a user interface part such as a display unit to reduce the weight and size, and the main body responsible for transmitting and receiving the signal with the base station is easy to carry while being put on a waistband or in a bag, and can increase the talk time (registration number 20-0143321, Application No. 20-1997-0033992 and Application No. 10-1997-0074150 are filed or registered. As another method, an additional wireless communication unit is added to an existing mobile communication terminal, and a method for placing a wireless unit capable of transmitting and receiving a signal with a user interface and a terminal on a separate portable device is also applied for (application number 10-1997-0058423). It also applies a method of connecting an additional wireless device to an existing terminal without changing the structure of the existing terminal, and having a wireless unit capable of transmitting and receiving signals with a user interface and an additional wireless device on a separate portable device (application number 10-1998-0014316). It is.

The conventional methods do not solve the problem of not being able to talk when the battery is low in charge.

In addition, a repeater may be used as a method for enabling a call even when the battery is low in charge. Although this method aims to make a call in a poor radio wave environment, it can also be used as a way to make a call with low power consumption. That is, the terminal and the base station need high power to transmit and receive the signal directly in the place where the electric wave is weak such as underground shopping mall, but it is possible to call with low power because it can transmit and receive the signal with the base station in close proximity. Since this method is a method of relaying signals of the same frequency, it is advantageous to use in subways and underground shopping malls that are blocked from the outside, but it is difficult to use due to mutual interference in an open environment.

An object of the present invention devised to solve the above problems is that the first terminal to make a call does not need to talk directly with the base station, and transmits and receives the necessary signal with a second other terminal in a wired or wireless manner so that the first terminal is connected with the base station. By allowing the second terminal to transmit and receive a signal to be transmitted and received with the base station, even when the battery charge of the first terminal is low, the call can be made.

1 is a terminal structure for implementing a call method according to the present invention

2 is a block diagram showing the structure of a terminal according to a first embodiment of the present invention;

3 is a block diagram showing a terminal structure according to a second embodiment of the present invention;

4 is a block diagram showing a terminal structure according to a third embodiment of the present invention;

5 is a block diagram showing the structure of a terminal according to a fourth embodiment of the present invention.

6 is a block diagram showing the structure of a terminal according to a fifth embodiment of the present invention.

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

210: first terminal 220: second terminal

211, 221: first wireless communication unit 212, 222: second communication unit

213, 223: signal processing and control unit 235, 245: interface unit

233, 243: connectors 231, 232, 241, 242: antenna

In order to achieve the above object, a wireless terminal capable of direct communication between terminals of the present invention includes a first wireless communication unit for transmitting and receiving signals between a terminal and a base station, a second communication unit for transmitting and receiving signals between terminals, In the first and second terminals comprising a signal processing and control unit for control and interface processing between the user and the terminal, and an antenna for wireless communication and a connector for wired communication, the first and second terminals are configured through a predetermined authentication and approval procedure. Characterized in that the signal is transmitted and received through the second communication unit of the second terminal to transmit and receive signals with the base station through the first wireless communication unit of the second terminal.

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

1 is a terminal structure for implementing a call method of the present invention.

As shown in Figure 1, the first terminal 110 for implementing a communication method of the present invention is a first wireless communication unit 111 for transmitting and receiving a signal with a base station, the terminal using a wired or wireless signal between each other A second communication unit 112 for transmitting and receiving, a signal processing and control unit 113 for controlling communication and interface processing between a user and a terminal, antennas 131 and 132 for wireless communication, and a connector 133 for wired communication; The interface unit 135 includes a microphone, a camera, a speaker, a keypad, a display unit, and the like. Here, the interface unit refers to all means of communication between the user and the terminal device, such as a motor and a volume control switch for vibration. This configuration is also used in the prior art.

2 shows a structure of a terminal for transmitting and receiving a signal with a base station through a second terminal as a first embodiment of the present invention.

As illustrated in FIG. 2, when it is difficult to directly transmit or receive a signal to a base station due to a lack of battery charge of the first terminal 210, the second terminal of the first terminal 210 is configured through a predetermined authentication and approval procedure. A communication path must be established between the communication unit 212 and the second communication unit 222 of the second terminal 220 and transmitted and received with the base station through the first wireless communication unit 211 provided by the first terminal 210 itself. The communication method is to transmit and receive a signal to and from a base station through a first wireless communication unit 221 of the second terminal 220. In this way, power consumption of the first terminal 210 occurs only in the interface unit 235, a part of the signal processing control unit 213, and the second communication unit 212, and the power of the first wireless communication unit 211 which consumes the most power. Since the supply is cut off, the call can be made even when the battery charge is low. When the communication between the first terminal 210 and the second terminal 220 is wirelessly connected, the second antennas 232 and 242 are used, and when the wires are connected, the connectors 233 and 243 are used. Since the first terminal 210 does not directly talk to the base station, the first antenna 231 of the first terminal 210 is not used and is connected with the base station through the first antenna 241 of the second terminal 220. do. The signal processing and control unit 213 of the first terminal 210 performs only basic operations for the user interface, and the signal processing and control unit 223 of the second terminal 220 performs all operations necessary for transmission and reception with the base station. do. In addition, the interface unit 245 of the second terminal 220 is not used when only relaying the call of the first terminal 210, but also the second terminal 220 while relaying the call of the first terminal 210. It can be used when you want to talk at the same time.

Figure 3 shows a structure of a terminal for transmitting and receiving a signal with a base station using a relay terminal as a second embodiment of the present invention.

As shown in FIG. 3, since the second terminal 320 does not have a user interface, direct communication is not possible, and the external first terminal 310 is formed using the first wireless communication unit 321 of the second terminal 320. ) Is configured to only relay relaying signals to and from the base station. In this case, the relay-only second terminal 320 functions to increase the use time of the user's first terminal 310 by minimizing the power consumption of other terminals in public places such as department stores, theaters, buses, airplanes, and the like. The difference from the general repeater used is that the communication between the user first terminal 310 and the second relay terminal 320 and the communication between the base station and the second terminal 320 do not interfere with each other because they use different frequencies. Is not. The first terminal 310 opens a communication path between the second communication unit 322 of the second terminal 320 and the second communication unit 312 of the first terminal 310 through a predetermined authentication and approval procedure. Transmitting and receiving a signal to and from a base station through a first wireless communication unit 321 of a second terminal 320 dedicated to relay the signal to be transmitted and received with the base station via the first wireless communication unit 321 which is provided by the second terminal 320 itself; It is a communication method. In this way, power consumption of the first terminal 310 occurs only in the interface unit 335, a part of the signal processing control unit 313, and the second communication unit 312, and the power of the first wireless communication unit 311 which consumes the most power. The supply is cut off, reducing battery power consumption. When the communication between the first terminal 310 and the second terminal 320 is wirelessly connected, the second antennas 332 and 342 are used, and when the wires are connected by wires, the connectors 333 and 343 are used. Since the first terminal 310 does not directly talk to the base station, the first antenna 331 of the first terminal 310 is not used and is connected to the base station through the first antenna 341 of the second terminal 320. do. The signal processing and control unit 313 of the first terminal 310 performs only basic operations for the user interface. In addition, the relay-only second terminal 320 may be connected to the plurality of first terminals 310 at the same time.

FIG. 4 shows a structure of a terminal in which a call is made with the aid of a second terminal without a call with a base station by itself as a third embodiment of the present invention.

As shown in FIG. 4, the first terminal 410 is not provided with the first wireless communication unit for communication with the base station, and only the second communication unit 412 is provided so that it is impossible to directly communicate with the base station. A signal may be transmitted and received through the second communication unit 422 of 420, and the signal may be transmitted and received with the base station using the first wireless communication unit 421 of the second terminal 420. Since the first terminal 410 does not have a first wireless communication unit, it can be miniaturized. When carrying a pair with the second terminal 420, the second terminal 420 is stored in a bag and the first terminal 410 is miniaturized. Can be carried in a pocket or the like. The first terminal 410 opens a communication path between the second communication unit 412 of the first terminal 410 and the second communication unit 422 of the second terminal 420 through a predetermined authentication and approval procedure. It is a communication method for transmitting and receiving a signal with a base station through the first wireless communication unit 421 of the second terminal 420. When the communication between the first terminal 410 and the second terminal 420 is wirelessly connected, the second antennas 432 and 442 are used, and when the wires are connected by wires, the connectors 433 and 443 are used. The second terminal 420 is connected to the base station through the first antenna 441 provided by itself. Since the signal processing and control unit 413 of the first terminal 410 only needs to perform basic operations for the user interface, the manufacturing cost can be lowered, and the signal processing and control unit 423 of the second terminal 420 may be connected to the base station. Perform all necessary operations for sending and receiving. In addition, the interface unit 445 of the second terminal 420 is not used when only the call of the first terminal 410 is relayed, and the second terminal 420 also relays the call of the first terminal 410. It can be used when you want to talk at the same time.

The existing detachable terminal or the wireless hands-free device being used gives a user identification code such as a phone number to the main body, whereas the mobile device has only a user interface unit, whereas the first terminal 410 of the present invention itself generates an identification code such as a phone number. Differences in that multiple first terminals 410 can use one second terminal 420 and can be changed from time to time without needing to use a second terminal 420. There is.

5 shows an example of making a call between a terminal and a terminal directly without passing through a base station as a fourth embodiment of the present invention.

As shown in FIG. 5, the first terminal 510 is a second communication unit 512 of the first terminal 510 and a second communication unit 522 of the second terminal 520 through a predetermined authentication and approval procedure. A communication path may be established between the direct terminals using the interface unit 535 of the first terminal 510 and the interface unit 545 of the second terminal 520. At this time, the power consumption of the first terminal 510 and the second terminal 520 occurs only in the interface unit 535, 545, part of the signal processing controller 513, 523 and the second communication unit 512, 522, and consumes the most power. The power supply to the first wireless communication unit 511, 521 is cut off. In the communication between the first terminal 510 and the second terminal 520, the second antennas 532 and 542 are used when connected wirelessly, and the connectors 533 and 543 are used when the connection is made by wire. Since the first terminal 210 and the second terminal 520 do not directly talk to the base station, the first antennas 531 and 541 of each terminal are not used. The signal processing and control units 513 and 523 of each terminal only perform basic operations for the user interface and do not need to perform operations necessary for transmission and reception with the base station. There is an advantage that can be called in the mountains, valleys, etc. because the call between the terminals can be made without the help of the base station.

FIG. 6 shows a structure of a terminal capable of making a call through a terminal connected to a general wireline as a fifth embodiment of the present invention.

As shown in FIG. 6, in an environment in which a general wired telephone line such as a home or an office is available, the first terminal 610 may be connected to the second communication unit 612 of the first terminal 610 through a predetermined authentication and approval procedure. Opens a communication path between the wired telephone line and the second communication unit 622 of the second terminal 620 connected through the connector 644 and performs the wired communication function in the signal processing and control unit 645 of the second terminal 620. It is a communication method that connects with a telephone company. By doing so, the interface unit 635 of the first terminal 610, a part of the signal processing control unit 613 and the second communication unit 612 only operate, and the power supply of the first wireless communication unit 611 is cut off. The first wireless communication unit 621 and the interface unit 645 of the second terminal 620 are not used. In the communication between the first terminal 610 and the second terminal 620, the second antennas 632 and 642 are used when connected wirelessly, and the connectors 633 and 643 of each terminal are used when connected by wire. . Since the first terminal 610 and the second terminal 620 does not directly talk to the base station, the first antennas 631 and 641 are not used. The signal processing and control unit 613 of the first terminal 610 performs only basic operations for the user interface, and the signal processing and control unit 623 of the second terminal 620 performs operations necessary for wired communication.

The terminal of the present invention has a function to make a call even when the battery is low on charge, and by installing a common terminal in a public place, it is possible to reduce the power consumption of the user terminal and increase the use time as well as in the mountains. In an environment in which communication with a base station is difficult, such as a valley, there is an advantage that direct communication between terminals can be made by using a second communication unit provided by each terminal without assistance of the base station. In addition, by adding a connector and a function to connect to a regular telephone line, it can be used as a wired or wireless telephone in homes and offices.

Claims (6)

A first wireless communication unit for transmitting and receiving signals between a terminal and a base station, a second communication unit for transmitting and receiving signals between terminals, a signal processing and control unit for controlling communication and interface processing between a user and a terminal, and for wireless communication In the first and second terminals comprising an antenna and a connector for wired communication, It is characterized in that the first terminal transmits and receives a signal with the base station through the first wireless communication unit of the second terminal by transmitting and receiving the necessary signal through the second communication unit of the first and second terminals through a predetermined authentication and approval procedure. A wireless terminal capable of direct communication between terminals. The method of claim 1, Since the second terminal does not have a user interface unit, direct communication is not possible, and only one of the plurality of first terminals transmits and receives a signal to and from the base station through the first wireless communication unit of the second terminal. A wireless terminal capable of direct communication between terminals. The method of claim 1, The first terminal does not include a first wireless communication unit, the wireless terminal capable of direct communication between the terminal, characterized in that for transmitting and receiving a signal with the base station with the help of the second terminal having a first wireless communication unit and the second communication unit. The method of claim 1 or 3, A wireless terminal capable of direct communication between terminals, wherein the terminals communicate with each other through the second communication unit of the first and second terminals without the help of a base station. The method according to any one of claims 1 to 4, A wireless terminal capable of direct communication between terminals, characterized in that the call is connected to a general wired telephone network using a connector to the signal processing and control unit of the second terminal. The method according to claim 1 or 2, The communication method of the base station to which the first wireless communication unit of the first terminal can connect is different from the communication method of the base station to which the first wireless communication unit of the second terminal can connect, so that multi-mode calls can be made. Wireless terminal capable of communication.