JP2005260434A - Mobile communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance convenience by performing seamless switching of a wired public line and a wireless line. <P>SOLUTION: A wireless base station detecting section 203 receives a control signal transmitted from a wireless base station through a wireless communication interface section 201 and decides that a wireless base station is detected if a received control signal has a reception quality of predetermined level or above. A wired connector detecting section 204 detects connection of a wired connector to a wired communication interface section 202 and disconnection of the wired connector therefrom. A communication system control section 205 determines which of a wired communication protocol and a wireless communication protocol is employed based on the existence of detection of wireless base station and existence of connection of the wired connector, and controls the wireless communication interface section 201 and the wired communication interface section 202 according to the protocol thus determined. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile communication terminal device, and more particularly to a mobile communication terminal device connectable to a wired public line.

  Since the mobile phone performs wireless communication with the base station apparatus, communication can be performed anywhere as long as the propagation environment with the base station apparatus is good, and communication can be performed even while moving.

  Mobile phones are widely used because of their convenience, and they can communicate almost anywhere in major areas except in mountainous areas and remote areas.

  However, mobile phones radiate radio waves to transmit and receive control signals to and from the base station device and perform cell searches during standby as well as during communications, and medical institutions such as hospitals use radio waves. In order to prevent medical devices from malfunctioning, the mobile phone must be turned off so as not to emit radio waves.

  On the other hand, wired public lines can perform high-speed data communication without radiating radio waves, and do not operate with an internal power supply like mobile phones. There are also advantages that mobile phones do not have.

  As described above, a technique described in Patent Document 1 is known as a technique having both the advantages of a wireless line typified by a mobile phone and a wired public line typified by a fixed telephone. This patent document 1 discloses a technique that has a function of connecting to a wired public line and can respond to incoming calls from the wireless line while connected to the public line.

Patent Document 2 prepares a charger that is connected to a wired public line and wirelessly communicates with a mobile communication terminal using a weak radio wave, and automatically switches to a wired public line within the reach of the radio wave from the charger. Thus, a technology capable of suppressing communication charges at low cost and performing high-speed communication is disclosed.
JP 2001-197561 A JP 2002-291934 A

  However, neither of the mobile communication terminals disclosed in Patent Document 1 and Patent Document 2 can switch between wired public lines and wireless lines, and is not convenient.

  The present invention has been made in view of this point, and an object of the present invention is to provide a mobile communication terminal device that is highly convenient by seamlessly switching between a wired public line and a wireless line.

  A mobile communication terminal device according to the present invention includes a wired interface connected to a wired public line, a wired connector detection means for detecting connection of a wired connector to the wired interface and disconnection of the wired connector from the wired interface, and a wireless line. Based on a wireless interface for wireless connection, a wireless base station detection means for detecting a control signal transmitted from the wireless base station, a detection result of the wired connector detection means, and a detection result of the wireless base station detection means, It is determined which communication protocol or wireless communication protocol is used, and a control unit that controls the wired interface and the wireless interface according to the determined protocol.

  According to this configuration, based on the detection result of the wired connector detection means and the detection result of the wireless base station detection means, it is determined which of the wired communication protocol and the wireless communication protocol is used, and the wired communication protocol is determined according to the determined protocol. By controlling the interface and the wireless interface, it is possible to seamlessly switch to another communication line during communication using either a wired public line or a wireless line, thereby improving convenience.

  In the mobile communication terminal device of the present invention, in the configuration described above, when the wired connector detection unit detects connection of a wired connector during wireless communication in which the control unit controls the wireless interface according to a wireless communication protocol, a wired communication protocol is provided. Accordingly, a configuration is adopted in which the communication is switched to wired communication for controlling the wired interface.

  According to this configuration, when the wired connector detection unit detects connection of the wired connector during wireless communication, the control unit switches from wired communication to wired communication by controlling the wired interface according to the wired communication protocol. You can switch seamlessly.

  In the mobile communication terminal device of the present invention, in the above configuration, the control means transmits a control signal transmitted from the radio base station by the radio base station detection means during wired communication in which the wired interface is controlled according to a wired communication protocol. When the detection is performed and the wired connector detection means detects disconnection of the wired connector, a configuration is adopted in which the wireless interface is switched to control the wireless interface according to a wireless communication protocol.

  According to this configuration, when the wireless base station detection unit detects a control signal transmitted from the wireless base station during wired communication, and the wired connector detection unit detects disconnection of the wired connector, the control unit performs wireless communication. By switching to wireless communication in which the wireless interface is controlled according to the protocol, it is possible to seamlessly switch from wired communication to wireless communication.

  In the mobile communication terminal of the present invention, in the above configuration, the control means controls the radio interface when a control signal for requesting forcibly stopping radio communication is detected by the radio base station detection means. By adopting such a configuration, the radio wave emission is stopped.

  According to this configuration, when a control signal for forcibly stopping wireless communication is detected by the wireless base station detecting means, the control means controls the wireless interface to stop the emission of radio waves. Therefore, for example, in a place where radiation of radio waves is prohibited, such as a medical institution, it is unnecessary to turn off the power, and if there is a wired connector, communication can be performed by connecting the wired connector.

  The mobile communication terminal device according to the present invention adopts a configuration in which the wired interface and the wireless interface are detachable and modular in the above configuration.

  According to this configuration, since the wired interface and the wireless interface are detachable module types, if any of the modules is mounted as necessary, the mobile communication terminal device can be reduced in weight.

  As described above, according to the present invention, it is possible to seamlessly switch between a wired line and a wireless line by switching communication method control between wired communication and wireless communication during communication, and a highly convenient mobile communication terminal apparatus. Can be realized.

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

(Embodiment 1)
FIG. 1 is a diagram showing a configuration of a radio communication system according to Embodiment 1 of the present invention. In this figure, a mobile terminal 101 includes a wired connector such as a modular jack connected to a wired line, and is connected to the wired base station 102 via a wired line. In addition, an antenna is provided and connected to the radio base station 103 via a radio line. Switching between the wired line and the wireless line may be a switching operation of the user of the mobile terminal 101 or may be based on whether or not the wired line is connected. Here, a case where switching is performed depending on whether or not the wired line is connected will be described. .

  When the mobile terminal 101 uses a wired line, the wired base station 102 communicates with the mobile terminal 101 via the wired line. When the mobile terminal 101 uses a wireless line, the wireless base station 103 communicates with the mobile terminal 101 via the wireless line.

  The control station 104 performs overall control of the wired base station 102 and the wireless base station 103, and performs control when the mobile terminal 101 switches to the other base station during communication with either the wired base station 102 or the wireless base station 103.

  FIG. 2 is a block diagram showing an internal configuration of mobile terminal 101 according to Embodiment 1 of the present invention. In this figure, a wireless communication interface unit 201 is an interface connected to a wireless line, and a wired communication interface unit 202 is an interface connected to a wired line.

  The radio base station detection unit 203 detects a control signal such as a broadcast channel received from the radio base station received via the radio communication interface unit 201, and if the detected control signal is equal to or higher than a predetermined reception quality, the radio base station And the communication method control unit 205 is notified of the fact.

  The wired connector detection unit 204 detects whether a wired connector is connected to the wired communication interface unit 202 or whether the wired connector is disconnected (opened) from the wired communication interface unit 202 and notifies the communication method control unit 205 of the detection result.

  The communication method control unit 205 controls the wired communication interface unit 202 according to the wired communication protocol based on the detection results notified from the wireless base station detection unit 203 and the wired connector detection unit 204, or wirelessly according to the wireless communication protocol. The communication interface unit 201 is controlled. Detailed control of the communication system control unit 205 will be described later.

  The transmission / reception unit 206 performs transmission / reception with the wired base station 102 via the wired communication interface unit 202 or performs transmission / reception with the wireless base station 103 via the wireless communication interface unit 201.

  Next, the protocol stack will be described. FIG. 3 is a diagram showing a protocol stack of the mobile terminal according to Embodiment 1 of the present invention. As shown in this figure, a common protocol is used for wired and wireless from the upper application layer to the data link layer. The physical layer includes a wired communication protocol and a wireless communication protocol. During wired communication, the wired base station and the mobile terminal use the wired communication protocol, and during wireless communication, the wireless base station and the mobile terminal use the wireless communication protocol.

  Next, the operation of the communication method control unit 205 will be described. FIG. 4 is a state transition diagram of the communication system control unit 205 according to Embodiment 1 of the present invention. In this figure, the state in which the mobile terminal 101 is not connected to the wired base station 102 and the wireless base station 103 is out of range (state A), and the state in which the mobile terminal 101 is connected to the wired base station 102 is a wired communication mode (state B). The control state of the communication system control unit 205 is shown with the state connected to the wireless base station 103 as the wireless communication mode (state C). The communication system control unit 205 transitions between states A, B, and C, respectively.

  A table summarizing the state transitions of the communication system control unit 205 is shown in FIG. This figure shows the relationship between the current control state of the communication system control unit 205 and the state transition trigger. First, a description will be given of a state that is changed by various triggers when the current control state of the communication method control unit 205 is state A (out of service area). When the wired connector detection unit 204 detects the connection of the wired connector, the state transitions from state A to state B (wired communication mode). In addition, the disconnection of the wired connector is not detected because it is in state A (out of service area), and the state A is not changed. Further, when the wireless base station detection unit 203 detects a wireless base station, the state A is changed to the state C (wireless communication mode). Further, the disappearance of the radio base station cannot occur in the state A, and the state A is not changed.

  Next, when the control state of the current communication method control unit 205 is the state B (wired communication mode), the detection of the wired connector is not connected to the state transition trigger because the wired connector remains connected. There is no transition. When disconnection of the wired connector is detected, the state transitions from state B to state C if state A or a wireless base station is detected. Even if a wireless base station is detected, the state B (wired communication mode) is prioritized and the state B remains unchanged. Further, even if the disappearance of the radio base station is detected, communication is possible in the state B, so that no transition is made to another state.

  Next, when the control state of the current communication method control unit 205 is state C (wireless communication mode), when connection of a wired connector is detected, state B (wired communication mode) is prioritized and transition from state C to state B is performed. To do. Further, even if disconnection of the wired connector is detected, communication is possible in the state C, so that no transition is made to another state. In addition, since the wireless base station has already detected the detection of the wireless base station, it does not trigger a state transition, and the state C is not changed. Further, when the disappearance of the wireless base station is detected, the state transitions to the state B if the state A or the connection of the wired connector is detected.

  As described here, for example, even if a wireless base station is detected in the state B (wired communication mode), the state B remains unchanged, or the connection of the wired connector is detected in the state C (wireless communication mode). The reason why the wired communication mode is wired so as to change to the state B is that the act of connecting the wired connector is performed with the intention of the user, so that high-speed data communication, power consumption reduction or This is because the purpose is to stop charging and emission of radio waves.

  In this way, by seamlessly handing over the wired line and the wireless line, for example, the remaining battery level is reduced during a wireless call, and if the wired connector is connected in a restaurant where the wired connector is laid, the call is interrupted. Can continue without.

  As described above, according to the embodiment of the present invention, the disadvantages of the wired line and the wireless line are complemented, and further, detection of connection / disconnection of the wired connector and detection / disappearance of the wireless base station during communication. Accordingly, by switching the communication method control, the wired line and the wireless line can be switched seamlessly, and a highly convenient mobile terminal can be realized.

(Embodiment 2)
In the first embodiment, the case where the wired communication and the wireless communication are seamlessly switched has been described. In the second embodiment of the present invention, a case where the wireless communication mode is forcibly changed will be described.

  The configuration of the mobile terminal according to Embodiment 2 of the present invention is the same as that in FIG. 2 and will be described with reference to FIG.

  For example, in a medical institution such as a hospital, there is a risk of causing malfunction of a medical device due to radio wave radiation, and in a place where the power of the mobile terminal must be turned off, a control signal for forcibly changing the wireless communication mode is sent. A transmission device for transmission is provided. In addition, this transmission device is provided at an entrance and exit, and is designed to transmit a control signal to all mobile terminals brought into a hospital, taking care not to cause malfunctions of medical devices such as weak radio waves. .

  In the mobile terminal 101, the radio base station detection unit 203 detects the control signal transmitted from the transmission device via the radio communication interface unit 201, and notifies the communication method control unit 205 to that effect.

  The communication method control unit 205 forcibly changes the wireless communication mode according to the content notified from the wireless base station detection unit 203. That is, if the communication method control unit 205 detects out-of-service (state A) or wired connector connection from the wireless communication mode (state C), the communication method control unit 205 transitions to the wired communication mode (state B). Also, the emission of radio waves is stopped so as not to transmit / receive control signals used for cell search or the like.

  As a result, even if the radio communication mode is forcibly stopped in a medical institution where emission of radio waves is prohibited, there is no need to intentionally turn off the power. For example, a hospitalized patient was laid on the bed. By connecting a wired connector, communication can be performed in a wired communication mode without emitting radio waves.

  As described above, according to the present embodiment, by forcibly changing the wireless communication mode, it is possible to stop the emission of radio waves without turning off the power in a place where emission of radio waves is prohibited, such as medical institutions. it can.

  In addition, the wired communication interface unit and the wireless communication interface unit can be detachably modularized, and any one of the modules can be mounted as necessary, thereby reducing the weight of the mobile terminal.

  The mobile communication terminal device according to the present invention has an effect of seamlessly switching between a wired line and a wireless line by switching between communication control of wired communication and wireless communication during communication, and is applied to a wired and wireless communication system. be able to.

The figure which shows the structure of the radio | wireless communications system which concerns on Embodiment 1 of this invention. The block diagram which shows the internal structure of the mobile terminal which concerns on Embodiment 1 of this invention. The figure which shows the protocol stack of the mobile terminal which concerns on Embodiment 1 of this invention. State transition diagram of communication system control unit according to Embodiment 1 of the present invention The figure which shows the table which put together the state transition of the communication system control part which concerns on Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Mobile terminal 102 Wired base station 103 Wireless base station 104 Control station 201 Wireless communication interface part 202 Wired communication interface part 203 Wireless base station detection part 204 Wired connector detection part 205 Communication system control part 206 Transmission / reception part

Claims (5)

A wired interface connected to a wired public line;
Wired connector detection means for detecting connection of a wired connector to the wired interface and disconnection of the wired connector from the wired interface;
A wireless interface for wireless connection to a wireless line;
Radio base station detection means for detecting a control signal transmitted from the radio base station;
Based on the detection result of the wired connector detection means and the detection result of the wireless base station detection means, it is determined which protocol of a wired communication protocol and a wireless communication protocol is to be used, and the wired interface and the wireless communication protocol according to the determined protocol Control means for controlling the wireless interface;
A mobile communication terminal device comprising:   When the wired connector detection unit detects connection of a wired connector during wireless communication in which the wireless interface is controlled according to a wireless communication protocol, the control unit switches to wired communication that controls the wired interface according to a wired communication protocol. The mobile communication terminal apparatus according to claim 1, wherein:   The control means detects a control signal transmitted from the wireless base station during wired communication in which the wired interface is controlled according to a wired communication protocol, and the wired connector detection means is a wired connector. 3. The mobile communication terminal device according to claim 1, wherein the mobile communication terminal device switches to wireless communication that controls the wireless interface according to a wireless communication protocol when disconnection is detected.   When the control signal for forcibly stopping wireless communication is detected by the wireless base station detection means, the control means stops radio wave emission by controlling the wireless interface. The mobile communication terminal device according to any one of claims 1 to 3.   The mobile communication terminal apparatus according to any one of claims 1 to 4, wherein the wired interface and the wireless interface are detachably modular.

Images