JP4918721B2 - Wireless communication system, wireless LAN access point, mobile communication terminal, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the power consumption of a dual terminal and to improve convenience. <P>SOLUTION: The mobile communication terminal 100 capable of communicating with a plurality of cellular communication systems CS and the wireless LAN access point 200 registers information required for communication using the respective cellular communication systems CS to the wireless LAN access point 200 and stops a function relating to cellular communication when the mobil communication terminal 100 enters the wireless LAN area of the wireless LAN access point 200. The wireless LAN access point 200 includes a communication function with a cellular communication base station BS and receives the radio waves of the cellular communication transmitted from the cellular communication base station BS to the mobile communication terminal 100. In this case, the wireless LAN access point 200 notifies the mobile communication terminal 100 of the generation of the cellular communication by a wireless LAN. Then, the mobile communication terminal 100 activates the stopped cellular communication function and receives the radio waves transmitted by the cellular communication base station BS. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a wireless communication system, a wireless LAN access point, a mobile communication terminal, and a program, and in particular, a wireless communication system, a wireless LAN access point, a mobile communication terminal suitable for power saving in a dual terminal, and , Related to the program.

  In mobile communication such as a mobile phone, there is a so-called dual terminal that can use a plurality of wireless communication systems with one terminal (for example, Patent Document 1).

  Such dual terminals are generally capable of performing a voice call function and a data communication function with a single unit. Recently, for example, a UIM (User Identity Module), a SIM (Subscriber Identity Module), or the like is used. There is also a dual terminal that can simultaneously handle a plurality of telephone numbers assigned from different communication carriers with one terminal.

  When such a dual terminal is used, if the communication method is the same, the hardware used for communication can be shared, but it is necessary to operate on different channels according to each telephone number (communication carrier). Therefore, more power is consumed during standby than a terminal that supports only one telephone number (communication carrier).

  Further, while a telephone call is made with one telephone number, the communication hardware is occupied, so there is a disadvantage that the standby operation for the other telephone number cannot be performed.

  On the other hand, a connection form via a public wireless LAN service (so-called Hot Spot (trademark)) or the like has been put into practical use by adding a connection function to a wireless LAN to a mobile communication terminal. For this reason, a wireless LAN connection function may be further installed in the dual terminal as described above. In this case, the mobile communication terminal is a dual terminal compatible with different wireless communication schemes of cellular communication and wireless LAN.

Here, since the communication range in a general public wireless LAN service is usually smaller than the communication range (cell) of cellular communication, it is necessary to detect whether it is within an area where wireless LAN connection is possible. For this reason, in order to use the wireless LAN function effectively, it is necessary to always start the operation part of the wireless LAN. In this case, since each system corresponding to two different wireless communication systems is operated simultaneously, more power is consumed during standby.
JP 2006-262314 A

  The present invention has been made in view of the above circumstances, and provides a wireless communication system, a wireless LAN access point, a mobile communication terminal, and a program for reducing power consumption and improving convenience in a dual terminal. The purpose is to provide.

In order to achieve the above object, a wireless communication system according to a first aspect of the present invention includes:
In a wireless communication system including a mobile communication terminal including a cellular communication unit and a wireless LAN communication unit, and a wireless LAN access point,
The mobile communication terminal is
Registration means for registering the setting information used by the cellular communication unit in the wireless LAN access point when the wireless LAN access point is within communication range;
Operation control means for controlling stop / activation of the cellular communication unit,
The wireless LAN access point is
Cellular communication receiving means for receiving radio waves of cellular communication;
A relay means for relaying to the mobile communication terminal by communication with the wireless LAN communication section when the cellular communication receiving means receives a radio wave of cellular communication for the mobile communication terminal;
The operation control means includes
When the registration to the wireless LAN access point is performed by the registration unit, the cellular communication unit is stopped,
When the relay by the relay means is received, the cellular communication unit stopped is activated,
It is characterized by that.

In order to achieve the above object, a mobile communication terminal according to the second aspect of the present invention provides:
At least in a mobile communication terminal having a cellular communication function and a wireless LAN communication function,
An access point detecting means for detecting that a wireless LAN access point having a relay function to the mobile communication terminal is within a communication range;
A registration unit for registering setting information used for the cellular communication in the wireless LAN access point when the access point detection unit detects that the wireless LAN access point having the relay function is within a communication range;
While the registration means registers the setting information in the wireless LAN access point, and the access point detection means detects that the mobile communication terminal is within the communication area of the wireless LAN access point, Cellular communication stop means for stopping the cellular communication function;
Cellular communication activation means for activating the cellular communication function stopped by the cellular communication stopping means when the wireless LAN access point relays the cellular communication terminal to the mobile communication terminal. When,
It is characterized by providing.

In the mobile communication terminal,
The cellular communication function may correspond to a plurality of cellular communication systems, in this case,
When the wireless LAN access point relays a call originating from another cellular communication system to the mobile communication terminal while communication is being performed by the cellular communication function activated by the cellular communication activation means, a busy signal is transmitted to the mobile communication terminal. It is desirable to further include busy notification means for transmitting to the wireless LAN access point.

In the mobile communication terminal,
The cellular communication stop means preferably stops the cellular communication function again when communication by the cellular communication function activated by the cellular communication activation means is completed.

In order to achieve the above object, a program according to the third aspect of the present invention is:
At least a computer that controls a mobile communication terminal having a cellular communication function and a wireless LAN communication function,
A function of detecting that a wireless LAN access point having a relay function to the mobile communication terminal is within a communication range;
A function of registering setting information used for the cellular communication in the wireless LAN access point when it is detected that the wireless LAN access point having the relay function is within a communication range;
A function of registering the setting information in the wireless LAN access point and stopping the cellular communication function while detecting that the mobile communication terminal is within a communication area of the wireless LAN access point;
A function of starting the stopped cellular communication function when the wireless LAN access point relays the outgoing call in the cellular communication to the mobile communication terminal to the mobile communication terminal;
It is characterized by realizing.

  According to the present invention, it is possible to reduce power consumption and improve convenience in a dual terminal.

  Embodiments according to the present invention will be described below with reference to the drawings. First, a mobile communication system (wireless communication system) according to an embodiment of the present invention will be described with reference to FIG. As shown in the figure, the mobile communication system 1 according to the present embodiment is a system for realizing communication by at least the mobile communication terminal 100, and includes a communication method using cellular communication (mobile communication), a wireless LAN ( Local area network) communication method. The mobile communication system 1 includes a cellular communication system CS and a cellular communication base station BS as a configuration for cellular communication, and a wireless LAN access point (AP: Access Point) as a configuration for wireless LAN connection. 200 is included.

  The cellular communication system CS is a communication system provided by a mobile communication carrier (so-called carrier). For example, the cellular communication system CS or a public line network or communication that connects a plurality of cellular communication base stations BS and a carrier center. It consists of a network. The cellular communication base station BS is a communication facility for wirelessly communicating with the mobile communication terminal 100, and is installed at a plurality of locations within the service providing range.

  The mobile communication terminal 100 communicates with other mobile communication terminals 100 and the like via the cellular communication system CS by performing wireless communication with nearby cellular communication base stations BS. That is, the cellular communication base station BS is connected to a communication network NW constituted by, for example, a circuit switching network such as a cellular network, a packet switching network such as the Internet, and the like, via the communication network NW by the mobile communication terminal 100. Communication has been realized.

  In the mobile communication system 1 according to the present embodiment, it is assumed that mobile communication services are provided by a plurality of carriers, and the cellular communication system CS includes equipment corresponding to the plurality of carriers. To do.

  The wireless LAN access point 200 is an access point for providing a public wireless LAN service called a so-called hot spot (trademark), and is installed in a public facility or store serving as a service providing area. The wireless LAN access point 200 is composed of a wireless communication device compliant with a wireless LAN standard such as IEEE802.11 system, and performs wireless communication with a device having a wireless LAN connection function.

  The wireless LAN access point 200 is connected to a communication network NW configured by a packet switching network such as the Internet, and allows a device that wirelessly communicates with the wireless LAN access point 200 to perform communication via the communication network NW. ing.

  The wireless LAN access point 200 according to the present embodiment not only provides such a wireless LAN connection service, but also receives cellular communication radio waves emitted from nearby cellular communication base stations BS to the mobile communication terminal 100. It also functions as a relay device for relaying.

  The configurations of the mobile communication terminal 100 and the wireless LAN access point 200 constituting the mobile communication system 1 as described above will be described below with reference to the drawings.

  First, the mobile communication terminal 100 according to the present embodiment will be described. The mobile communication terminal 100 according to the present embodiment is a mobile communication terminal device (telephone) such as a mobile phone or PHS (Personal Handyphone System), and is so-called dual that can be connected to a plurality of wireless communication systems. It is a terminal. In the present embodiment, it is assumed that the terminal is a dual terminal provided with a wireless LAN connection function capable of wireless connection with the wireless LAN access point 200 in addition to the cellular communication function for connecting to the cellular communication system CS.

  Further, the mobile communication terminal 100 of the present embodiment is also a dual terminal that can simultaneously handle a plurality of telephone numbers assigned from different carriers in the cellular communication function. Here, in the cellular communication system CS of the mobile communication system 1 according to the present embodiment, it is assumed that at least two communication carriers (referred to as “carrier CA” and “carrier CB”) provide services. The mobile communication terminal 100 according to the embodiment is a dual terminal that can use a telephone number assigned by a contract with a carrier CA and a telephone number assigned by a contract with a carrier CB. .

  The configuration of the mobile communication terminal 100 according to the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing the configuration of the mobile communication terminal 100.

  As illustrated, the mobile communication terminal 100 includes a control unit 110, a cellular communication unit 120, an antenna 121, a wireless LAN communication unit 130, an antenna 131, a display unit 140, an input unit 150, a call processing unit 160, a storage unit 170, Etc.

  The control unit 110 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory) serving as a work area, and the like, and each unit of the mobile communication terminal 100 by executing a predetermined operation program. To control. That is, each component of the mobile communication terminal 100 is controlled by the control unit 110, and information transmission between the components is performed via the control unit 110.

  The cellular communication unit 120 includes, for example, a wireless communication device for mobile communication, and controls radio wave transmission / reception by the antenna 121 for wireless communication with the cellular communication base station BS, for example, CDMA (Code Division Multiplex). Wireless communication is performed with the cellular communication base station BS by a communication method such as “Access: code division multiple access method”, and voice communication and data communication are performed via the cellular communication system CS.

  The wireless LAN communication unit 130 includes, for example, a wireless communication device compliant with a wireless LAN standard such as IEEE802.11, and controls radio wave transmission / reception by the antenna 131 for wireless communication with the wireless LAN access point 200. Wireless communication with the wireless LAN access point 200 is performed, and data generated based on various protocols such as IP (Internet Protocol) is transmitted and received.

  The display unit 140 is a display output device configured by, for example, a liquid crystal display device, and displays and outputs an image and the like under the control of the control unit 110.

  The input unit 150 includes buttons and keys configured on the outer surface of the mobile communication terminal 100 and is operated by the user of the mobile communication terminal 100. The input unit 150 includes an input circuit connected to each button, key, and the like, and generates an input signal according to a user operation and inputs the input signal to the control unit 110.

  The call processing unit 160 includes, for example, a voice input / output microphone and speaker, a codec circuit, and the like, and performs processing of voice related to the call function of the mobile communication terminal 100. That is, the reception operation of converting the digital audio data received by the cellular communication unit 120 into an analog audio signal and outputting it from the speaker 161, or the user's utterance input from the microphone 162 is converted into digital audio data and the cellular communication unit The transmission operation to be transmitted to 120 is performed.

  The storage unit 170 is composed of, for example, a storage device such as a ROM (Read Only Memory) or a flash memory, and stores various data necessary for realizing the present invention in addition to storing an operation program executed by the control unit 110. Store. In the present embodiment, as shown in FIG. 2, a plurality of storage areas are configured in the storage unit 170, and predetermined data is stored in each storage area. As illustrated, the storage unit 170 includes storage areas such as a cellular communication setting storage area 171, a wireless LAN setting storage area 172, and a program storage area 173.

  The cellular communication setting storage area 171 is an area for storing setting information required when the mobile communication terminal 100 performs cellular communication. As described above, since the mobile communication terminal 100 according to the present embodiment can perform cellular communication using the carrier CA and cellular communication using the carrier CB, the cellular communication setting storage area 171 includes setting information for each carrier. Will be stored.

  Here, as shown in FIG. 3A, at least the telephone number assigned from the carrier CA and the telephone number assigned from the carrier CB are stored in the cellular communication setting storage area 171. . Such setting information for each carrier is provided by an IC card issued by the carrier (hereinafter referred to as an “identification information card”) such as a so-called UIM (User Identity Module) or SIM (Subscriber Identity Module). Therefore, the mobile communication terminal 100 according to the present embodiment is configured so that a plurality of such identification information cards can be mounted, and by mounting a plurality of identification information cards at the same time as described above, Functions as a dual terminal.

  Therefore, the information recorded on the identification information card thus mounted can be transferred to the storage unit 170 of the mobile communication terminal 100 to be used as the cellular communication setting storage area 171. The information card itself may be used as the cellular communication setting storage area 171.

  The cellular communication setting storage area 171 stores location information obtained by location registration operation in cellular communication. In this case, location information transmitted by a nearby cellular communication base station BS that can wirelessly communicate with the mobile communication terminal 100 is stored in the cellular communication setting storage area 171. Here, since the mobile communication terminal 100 is a dual terminal corresponding to a plurality of carriers, there may be a plurality of cellular communication base stations BS capable of simultaneous communication for each carrier. In this case, the cellular communication setting storage area 171 stores a plurality of pieces of position information acquired from the respective cellular communication base stations BS. The position information stored in the cellular communication setting storage area 171 includes identification information unique to each cellular communication base station BS, in addition to information indicating the position (for example, latitude and longitude) of the cellular communication base station BS. It shall be assumed.

  The wireless LAN setting storage area 172 stores setting information necessary for wireless connection with a wireless LAN access point such as the wireless LAN access point 200. In the present embodiment, it is assumed that the wireless LAN access point 200 having the function as a relay device as described above and the mobile communication terminal 100 are connected by wireless LAN. Therefore, the wireless LAN setting storage area 172 stores setting information necessary for connection with the wireless LAN access point 200 having such a relay function.

  Here, in order to use the relay function by the wireless LAN access point 200, a contractor (operator, etc.) operating the wireless LAN access point 200, a carrier of cellular communication, and a user of the mobile communication terminal 100 are contracted in advance. It is assumed that it is doing. Based on such a contract, setting information necessary for communication with the wireless LAN access point 200 having the relay function is provided and stored in the wireless LAN setting storage area 172.

  In this case, in the wireless LAN setting storage area 172, for example, as shown in FIG. 3B, a record using identification information of the wireless LAN access point 200 (for example, ESSID (Extended Service Set Identifier) etc.) as a key. Each record is recorded with an encryption key necessary for encryption of wireless communication with the wireless LAN access point 200, a login ID and a login password for logging in to a connection service provided by the provider, and the like. The

  The program storage area 173 is an area for storing a program executed by the control unit 110. The program storage area 173 stores basic software (so-called OS) for controlling the operation of the entire mobile communication terminal 100, application software for realizing various functions of the mobile communication terminal 100, and the like. .

  In the present embodiment, the control unit 110 executes a program stored in the program storage area 173, thereby realizing a functional configuration for performing processing according to the present embodiment. A functional configuration realized by the control unit 110 is shown in FIG. FIG. 4 is a functional block diagram showing a functional configuration realized by the control unit 110.

  As illustrated, the control unit 110 functions as an access point detection unit 111, an information registration unit 112, an operation control unit 113, and the like.

  The access point detection unit 111 operates the wireless LAN communication unit 130 to detect the wireless LAN access point 200 registered in the wireless LAN setting storage area 172.

  Since the access point of the wireless LAN transmits identification information such as ESSID at any time by a beacon signal, when such a beacon signal can be received, it means that the wireless LAN access point is in an area where communication with the access point is possible. . In the present embodiment, the access point detection unit 111 collates the identification information included in the beacon signal received by the wireless LAN communication unit 130 with the identification information registered in the wireless LAN setting storage area 172, so that the relay function The wireless LAN access point 200 having the above is detected. That is, by such a detection operation, it is determined whether or not the mobile communication terminal 100 is in an area (communication range) where communication with the wireless LAN access point 200 having a relay function is possible.

  The information registration unit 112 controls the wireless LAN communication unit 130, and when it becomes possible to communicate with the wireless LAN access point 200 having a relay function, information for relaying an incoming call or the like by cellular communication to the mobile communication terminal 100 Are registered in the connected wireless LAN access point 200. In this case, the information registration unit 112 registers a plurality of pieces of telephone number information (hereinafter referred to as “terminal registration information”) stored in the cellular communication setting storage area 171 in the wireless LAN access point 200.

  The operation control unit 113 controls the operation of the hardware unit related to the communication operation, that is, the cellular communication unit 120 and the wireless LAN communication unit 130, according to the communication method that the mobile communication terminal 100 can use at that time.

  In the present embodiment, when wireless connection with the wireless LAN access point 200 having a relay function is possible, control is performed so that the operation of the cellular communication unit 120 stops. Here, when the operation control unit 113 stops the operation of the cellular communication unit 120, the control is performed by a method that reduces the power consumption of the mobile communication terminal 100, for example, by cutting off the power supplied to the cellular communication unit 120. To do.

  The operation control unit 113 also performs control to operate the cellular communication unit 120 that has been stopped. In the present embodiment, when the wireless LAN communication unit 130 receives a relay (details will be described later) from the wireless LAN access point 200 capable of performing the relay operation, the cellular communication unit 120 is controlled to operate.

  The operation control unit 113 further monitors the communication operation by the cellular communication unit 120 operated in this way, and performs control to stop the operation of the cellular communication unit 120 when the communication operation by the cellular communication unit 120 is completed. .

  The operation control unit 113 controls the wireless LAN communication unit 130 when the wireless LAN communication unit 130 receives a relay from the wireless LAN access point 200 while the cellular communication unit 120 performs the communication operation. An operation of notifying the wireless LAN access point 200 that the cellular communication unit 120 is busy is performed.

  In the present embodiment, the functional configuration is logically realized by the control unit 110 executing a program. For example, these functions are configured by, for example, an ASIC (Application Specific Integrated Circuit). ) Or the like.

  In addition, each said structure is a main structure required in order to implement | achieve this invention with the mobile communication terminal 100, About the other structure required as a mobile communication terminal, it is equipped as needed. And

  Next, the configuration of the wireless LAN access point 200 according to the present embodiment will be described with reference to FIG. FIG. 5 is a block diagram showing a configuration of the wireless LAN access point 200 according to the present embodiment.

  As shown in the figure, the wireless LAN access point 200 includes a control unit 210, a cellular communication unit 220, a wireless LAN communication unit 230, a storage unit 240, and the like.

  The control unit 210 includes, for example, a CPU and a RAM, and controls each unit of the wireless LAN access point 200.

  The cellular communication unit 220 includes, for example, a wireless communication apparatus having the same configuration as the cellular communication unit 120 of the mobile communication terminal 100, an antenna 221 and the like, and a cellular communication base station BS existing in the vicinity of the wireless LAN access point 200. Receives cellular radio waves transmitted by. When the relayed mobile communication terminal 100 is busy, a busy signal indicating that fact is relayed to the cellular communication base station BS.

  Such a cellular communication unit 220 is applied to the wireless LAN access point 200 in the form of a module, for example. In this case, the line capacity for the wireless LAN access point 200 to communicate with the cellular communication base station BS is defined by the number of cellular communication units 220 applied to the wireless LAN access point 200.

  Further, when there are cellular communication base stations BS of a plurality of carriers in the vicinity of the wireless LAN access point 200, it is possible to correspond to a plurality of carriers by applying the cellular communication unit 220 corresponding to each carrier. In this embodiment, it is assumed that it corresponds to the carrier CA and the carrier CB described above, and as shown in FIG. 5, the cellular communication unit 220A and the antenna 221A corresponding to the carrier CA, and the cellular communication unit corresponding to the carrier CB. It is assumed that 220B and antenna 221B are applied to wireless LAN access point 200.

  The wireless LAN communication unit 230 is composed of, for example, a wireless communication device for an access point based on a wireless LAN standard such as IEEE802.11 system, and controls radio wave transmission / reception by the antenna 231 so that a wireless LAN connectable terminal and Wireless communication. Here, for example, data generated using an IP protocol or the like is transmitted and received.

  The storage unit 240 is configured by a storage device such as a flash memory, for example, in order to make the wireless LAN access point 200 function as a relay device in addition to an operation program for causing the wireless LAN access point 200 to function as a wireless LAN access point. Stores necessary operation programs and data.

  In this embodiment, it is assumed that the wireless LAN access point 200 is accessed by the operation of the wireless LAN communication unit 130 of the mobile communication terminal 100 configured as described above. Here, when the wireless LAN access point 200 functions as a relay device, information based on the registration operation by the information registration unit 112 of the mobile communication terminal 100 (hereinafter referred to as “relay information”) is stored in the storage unit 240. The

  An example of this relay information is shown in FIG. As shown in the drawing, a record is created in the storage unit 240 using as key the address information (for example, private IP address) assigned to the mobile communication terminal 100 that has accessed the wireless LAN access point 200 via wireless LAN connection. Each record stores terminal registration information registered by the mobile communication terminal 100 and including telephone number information for each carrier used for cellular communication, as well as information indicating the registration date and time of the information.

  In addition, it is assumed that the storage unit 240 stores various types of access information (identification information such as ESSID, encryption key, etc.) defined in advance for the wireless LAN access point 200.

  Next, functions realized by the control unit 210 executing a program stored in the storage unit 240 will be described with reference to FIG. FIG. 7 is a functional block diagram illustrating functions realized when the control unit 210 of the wireless LAN access point 200 executes a program. Here, in addition to the function as a wireless LAN access point, a functional configuration when the wireless LAN access point 200 also functions as a relay device that relays cellular communication will be described.

  As illustrated, the control unit 210 functions as an access control unit 211, a relay information registration unit 212, a relay operation unit 213, and the like.

  The access control unit 211 controls the wireless LAN communication unit 230 and transmits the identification information (such as ESSID) of the wireless LAN access point 200 as a beacon signal as needed, and for example, by a DHCP (Dynamic Host Configuration Protocol) server function, etc. Address information necessary for wireless communication with the wireless LAN access point 200 is given to the mobile communication terminal 100 that has wirelessly accessed using the same identification information as the identification information. Here, among the private IP addresses prepared within a certain range, an address not assigned to another device is assigned to the mobile communication terminal 100.

  The relay information registration unit 212 newly creates a record (see FIG. 6) using the address information (private IP address) given to the mobile communication terminal 100 by the access control unit 211 as a key in the storage unit 240, and mobile communication. The registration information transmitted by the operation of the terminal 100 is recorded in the created record. At this time, for example, current date and time information acquired by a timer function of the control unit 210 is recorded in the record.

  The relay operation unit 213 analyzes the information included in the radio wave received from the cellular communication base station BS received by the cellular communication unit 220, and is a call for calling the mobile communication terminal 100 registered in the relay information. In that case, the wireless LAN communication unit 230 relays the call to the mobile communication terminal 100.

  In the present embodiment, the functional configuration is logically realized by the control unit 210 executing the program. However, these functions may be realized by a physical configuration such as an ASIC, for example. Good.

  The operation of the mobile communication system 1 using the mobile communication terminal 100 and the wireless LAN access point 200 configured as described above will be described below.

  First, the operation of the mobile communication terminal 100 will be described. Here, the “standby operation process” executed when the mobile communication terminal 100 is on standby will be described with reference to the flowchart shown in FIG. This standby operation processing is assumed to be started, for example, when the mobile communication terminal 100 is activated by turning on the power.

  When the process is started, each of the wireless LAN communication unit 130 and the cellular communication unit 120 is activated under the control of the operation control unit 113 of the control unit 110 (steps S101 and S102). That is, both the wireless LAN communication unit 130 and the cellular communication unit 120 are activated during a standby operation such as when the mobile communication terminal 100 is activated.

  Since the wireless LAN communication unit 130 is activated in this way, when there is a wireless LAN access point 200 in the vicinity of the mobile communication terminal 100, a beacon signal transmitted by the wireless LAN access point 200 is transmitted to the wireless LAN communication unit 130. Will receive. As described above, when the wireless LAN communication unit 130 receives some wireless radio wave by the wireless LAN, the wireless LAN communication unit 130 demodulates the radio wave and inputs the radio wave to the control unit 110.

  An input from the wireless LAN communication unit 130 is analyzed by the access point detection unit 111. Here, when the wireless LAN communication unit 130 receives a beacon signal transmitted from a wireless LAN access point, identification information (such as ESSID) of the wireless LAN access point that transmitted the beacon signal is obtained by demodulating the wireless radio signal. A signal is obtained.

  When the identification information thus obtained (hereinafter referred to as “AP identification information”) is input to the control unit 110, the access point detection unit 111 stores the wireless LAN stored in the wireless LAN setting storage area 172. The mobile communication terminal 100 is collated with each identification information of the setting information to determine whether or not the mobile communication terminal 100 is within the communication area of the wireless LAN access point 200 having a relay function (hereinafter referred to as “wireless LAN area”) (step) S103).

  Here, when it is determined that the mobile communication terminal 100 is within the wireless LAN range due to the match of the identification information (step S103: Yes), the access point detection unit 111 reads the wireless LAN access from the wireless LAN setting storage area 172. Various setting information associated with the identification information of the point 200 is acquired and transmitted from the wireless LAN communication unit 130 to the wireless LAN access point 200, thereby requesting the wireless LAN access point 200 for authentication.

  In this case, the wireless LAN access point 200 performs authentication using the setting information transmitted from the mobile communication terminal 100, and in the case of authentication, authentication including a private IP address assigned to the mobile communication terminal 100 or the like. Reply information.

  In this case, the authentication information is received by the wireless LAN communication unit 130 and input to the control unit 110. The access point detection unit 111 establishes the connection with the wireless LAN access point 200 by setting the address information included in the received authentication information in the wireless LAN communication unit 130 (step S104). It is assumed that such an operation for establishing a connection with the wireless LAN access point 200 is performed by a general procedure based on regulations such as a wireless LAN standard and a protocol.

  When the connection with the wireless LAN access point 200 is established, the access point detection unit 111 notifies the information registration unit 112 to that effect. In response to the notification from the access point detection unit 111, the information registration unit 112 accesses the cellular communication setting storage area 171, and stores the cellular communication setting information currently stored in the cellular communication setting storage area 171 as a wireless LAN access point. It is acquired as terminal registration information to be registered in 200.

  When the information registration unit 112 acquires the terminal registration information from the cellular communication setting storage area 171, the information registration unit 112 controls the wireless LAN communication unit 130 and transmits the acquired terminal registration information to the wireless LAN access point 200 (step S 105).

  Here, in the present embodiment, the telephone numbers assigned to the carrier CA and the carrier CB are registered in the wireless LAN access point 200 as terminal registration information. As described above, in the wireless LAN access point 200, for example, the cellular communication unit 220 is prepared for each carrier that can be handled, and the capacity of each line is determined.

  Therefore, when the wireless LAN access point 200 cannot cope with the carrier indicated by the terminal registration information from the mobile communication terminal 100, or when the wireless LAN access point 200 has already registered more than the line capacity even if it can cope with the carrier, Is returned (details will be described later). It is assumed that such an error notification is returned within a predetermined time after receiving the terminal registration information, and this reply time is notified to the mobile communication terminal 100 at the time of connection establishment, for example. It shall be.

  If the error notification is not received within a predetermined time after transmitting the terminal registration information (step S106: Yes), the terminal registration information is registered in the wireless LAN access point 200, and the relay operation by the wireless LAN access point 200 is performed. Will be done. In this embodiment, in this case, the wireless LAN access point 200 relays cellular communication with the mobile communication terminal 100 by the wireless LAN. That is, when a call is made to the mobile communication terminal 100 by the cellular communication of the carrier CA or the carrier CB that can be used by the mobile communication terminal 100, the wireless LAN access point 200 that has received the call is called by the wireless LAN. Notice.

  In this case, the mobile communication terminal 100 can also recognize a cellular communication call if only the wireless LAN function is operating. Therefore, since the cellular communication unit 120 does not need to operate, the power consumption of the mobile communication terminal 100 can be reduced by stopping the operation.

  In this case, the operation control unit 113 controls the cellular communication unit 120 to stop the operation of the cellular communication unit 120 after performing the location registration operation of the cellular communication (step S107).

  That is, in order to relay cellular communication with respect to the mobile communication terminal 100 by the wireless LAN access point 200, the cellular communication base station BS in the vicinity of the wireless LAN access point 200 transmits wireless communication of cellular communication to the mobile communication terminal 100. Therefore, by performing the location registration operation of cellular communication when the wireless LAN access point 200 is within the wireless LAN range, transmission from the cellular communication base station BS in the vicinity of the wireless LAN access point 200 is performed. To be.

  When the operation of the cellular communication unit 120 is stopped, the operation control unit 113 notifies the information registration unit 112 to that effect. In response to the notification from the operation control unit 113, the information registration unit 112 periodically repeats the transmission of the terminal registration information performed in step S105 (step S108). This is an operation for notifying the wireless LAN access point 200 that has registered the terminal registration information that the mobile communication terminal 100 is within the wireless LAN area.

  In this case, the information registration unit 112 notifies the access point detection unit 111 that the operation of the cellular communication unit 120 is stopped under the control of the operation control unit 113. The access point detection unit 111 monitors the beacon signal received by the wireless LAN communication unit 130 in response to the notification from the information registration unit 112, so that the mobile communication terminal 100 is within the wireless LAN area of the wireless LAN access point 200. It is discriminated at any time.

  In this way, when the mobile communication terminal 100 is in the standby state (step S109: No), if there is a call to a telephone number that can be used by the mobile communication terminal 100, the cellular communication base station BS that has recently registered the location. A radio wave for calling the mobile communication terminal 100 is transmitted.

  In this case, since the mobile communication terminal 100 stops the operation of the cellular communication unit 120, it cannot receive radio waves from the cellular communication base station BS. On the other hand, the wireless LAN access point 200 can receive a radio wave transmitted from the cellular communication base station BS, and receives it instead of the mobile communication terminal 100. And the relay signal which shows that the call by cellular communication is made is transmitted to the mobile communication terminal 100 by wireless LAN.

  Here, since the wireless LAN communication unit 130 is activated, the wireless LAN communication unit 130 receives the relay signal issued by the wireless LAN access point 200 and inputs it to the control unit 110. In this case (step S110: Yes), the operation control unit 113 executes “cellular communication processing” for performing cellular communication in accordance with the relay from the wireless LAN access point 200 (step S150). Details of this cellular communication process will be described later.

  On the other hand, when there is no transmission by cellular communication with respect to the mobile communication terminal 100, since the relay signal is not transmitted by the wireless LAN access point 200, the mobile communication terminal 100 does not receive it (step S110: No). . In this case, as described above, since the access point detection unit 111 monitors the beacon signal, it is determined at any time whether the mobile communication terminal 100 is within the wireless LAN area of the wireless LAN access point 200 or not. . Here, if the mobile communication terminal 100 is within the wireless LAN range of the wireless LAN access point 200 (step S111: Yes), periodic transmission of terminal registration information is repeated while the cellular communication unit 120 is stopped ( Step S108).

  On the other hand, if the mobile communication terminal 100 moves out of the wireless LAN area of the wireless LAN access point 200 due to movement or the like (step S111: No), the wireless LAN access point 200 cannot receive relay using the wireless LAN. Therefore, the cellular communication unit 120 is activated (step S102). In this case, for example, until a standby end requirement such as power-off of the mobile communication terminal 100 occurs (step S109: No), the processing after step S103 is repeated.

  That is, if the wireless LAN access point 200 having a relay function enters the wireless LAN area, the operation of the cellular communication unit 120 is stopped. If the mobile communication terminal 100 is not in such a wireless LAN area, the cellular communication unit 120 Both of the wireless LAN communication units 130 are operated.

  Then, when a predetermined standby end requirement occurs (step S109: Yes), this process ends.

  Next, in the standby operation process, the “cellular communication process” (step S150) executed when the mobile communication terminal 100 receives a relay signal from the wireless LAN access point 200 is shown in the flowchart of FIG. The description will be given with reference.

  As described above, in this process, the wireless LAN access point 200 receives the radio wave of the cellular communication transmitted by the cellular communication base station BS in response to the call to the telephone number of the mobile communication terminal 100, and the mobile communication terminal It is started when triggered by notification to the wireless LAN 100.

  As described above, when the wireless LAN access point 200 is notified that the cellular communication with the mobile communication terminal 100 is occurring, the cellular communication connection is established unless the outgoing call in the cellular communication is received. I can't. Therefore, when a relay signal is received from the wireless LAN access point 200, the operation control unit 113 activates the cellular communication unit 120 that has been stopped again (step S151).

  Then, the operation control unit 113 starts monitoring the cellular communication operation by the activated cellular communication unit 120 (step S152).

  Here, since the paging signal based on the transmission for the telephone number of the mobile communication terminal 100 is transmitted by radio waves from the cellular communication base station BS, the cellular communication base station BS causes the activated cellular communication unit 120 to operate. Will be received and received (step S153: Yes).

  In this case, the operation control unit 113 generates an incoming response signal indicating that the incoming call has been received through cellular communication in accordance with the relay signal, and controls the wireless LAN communication unit 130 to send the incoming response to the wireless LAN access point via the wireless LAN. 200 (step S154).

  In the mobile communication terminal 100 of the present embodiment, the hardware for performing the cellular communication is only the cellular communication unit 120, so that even if it supports a plurality of carriers, the actual communication operation can be performed by one carrier. About communication only. Therefore, the incoming cellular communication is a cellular communication for any carrier. Here, assuming that the cellular communication for the carrier CA is received, it is impossible to respond to a call to the telephone number of the carrier CB while this communication is being performed.

  However, since the telephone number assigned from the carrier CA and the telephone number assigned from the carrier CB are different numbers, it is transmitted to the telephone number of the carrier CB while communicating by the cellular communication of the carrier CA. Sometimes. In such a case, a call radio wave is transmitted from the cellular communication base station BS of the carrier CB to the mobile communication terminal 100, so that the wireless LAN access point 200 receives this and receives the mobile communication terminal over the wireless LAN. 100 will be notified.

  As described above, when the relay signal for the other carrier is received during the cellular communication for one carrier (step S155: Yes), the operation control unit 113 indicates that the cellular communication is currently busy. A busy signal is generated, and the wireless LAN communication unit 130 is controlled and transmitted to the wireless LAN access point 200 (step S156).

  When the operation control unit 113 monitors the operation of the cellular communication unit 120 and determines that the cellular communication has been completed due to the call-end operation or the like (step S157: Yes), the operation control unit 113 reduces power consumption by standby only in the wireless LAN. In order to reduce it, the operation of the cellular communication unit 120 is stopped again (step S158), and the process returns to the standby operation process flow of FIG.

  In this case, as shown in FIG. 8, the process returns to step S108, and the periodic transmission of the terminal registration information is continuously performed.

  As described above, in the mobile communication terminal 100, within the wireless LAN area of the wireless LAN access point 200 having a relay function, the cellular communication unit 120 is stopped to reduce power consumption, and during this time there is a transmission by cellular communication. If this happens, this is recognized by a notification from the wireless LAN access point 200 using the wireless LAN. And only when it is necessary to perform such cellular communication, the cellular communication part 120 is started and cellular communication is performed.

  Next, the operation of the wireless LAN access point 200 when the mobile communication terminal 100 performs the above operation will be described. First, “wireless LAN communication processing” executed by the wireless LAN access point 200 to provide a wireless LAN connection will be described with reference to the flowchart shown in FIG. This wireless LAN communication process is started when wireless access using identification information (such as ESSID) of the wireless LAN access point 200 occurs. Here, description will be given below assuming that there is an access from the mobile communication terminal 100.

  When the processing is started, the access control unit 211 of the wireless LAN access point 200 performs a predetermined authentication operation by collation based on information transmitted from the mobile communication terminal 100, and assigns a private IP address to the mobile communication terminal. The connection is established, for example, by giving it to 100 (step S201).

  Here, when terminal registration information is transmitted from a terminal that has established a connection, the wireless LAN communication unit 230 receives it and inputs it to the control unit 210. Here, since mobile communication terminal 100 is accessing, the terminal registration information transmitted by mobile communication terminal 100 in step S105 of the standby operation process (FIG. 8) is received (step S202: Yes).

  In this case, the relay information registration unit 212 confirms the registration status of the relay information to the wireless LAN access point 200 at the current time (step S203), and can register the terminal registration information transmitted from the mobile communication terminal 100. It is determined whether or not there is (step S204). Here, since the line capacity capable of receiving cellular communication is different for each wireless LAN access point 200, the mobile communication terminal 100 is determined based on its own line capacity and connection information currently registered in the storage unit 240. Determine whether you can register.

  Here, when registration is not possible (step S204: No), the relay information registration unit 212 generates an error signal indicating the fact, and controls the wireless LAN communication unit 230 to transmit it to the mobile communication terminal 100 (step S205). ).

  On the other hand, if registration is possible (step S204: Yes), the relay information registration unit 212 accesses the storage unit 240 and creates a new record in the relay information table using the identification information assigned to the mobile communication terminal 100 as a key. Then, the relay information about the mobile communication terminal 100 is registered by storing the terminal registration information received from the mobile communication terminal 100 and the registration date / time information (step S206).

  When new relay information is created in this way, the relay information registration unit 212 notifies the relay operation unit 213 to that effect. In response to the notification from the relay information registration unit 212, the relay operation unit 213 executes “cellular communication relay processing” for performing a relay operation on the newly registered terminal (step S250). Details of this cellular communication relay process will be described later.

  When processing returns from cellular communication processing described later, or when an error notification is sent to the mobile communication terminal 100 in step S205, predetermined requirements for terminating communication with the accessed terminal (for example, reception of a disconnection request, Step S202 and subsequent steps are repeated until a radio wave does not reach due to the movement of the wireless LAN out of the wireless LAN range (step S207: No).

  Here, as described above, the mobile communication terminal 100 periodically transmits terminal registration information (step S108 (FIG. 8)). In this case, the relay information registration unit 212 updates only the registration date / time information in step S206 when the registration operation is performed again for the relay information already registered.

  Then, when a predetermined communication termination requirement is generated (step S207: Yes), this processing is terminated.

  Next, the “cellular communication relay process” (step S250) that is started when new relay information is registered in the wireless LAN communication process will be described with reference to the flowchart shown in FIG.

  This cellular communication relay process is a process for monitoring the occurrence of cellular communication for the registered mobile communication terminal 100. Here, when there is a call to the mobile communication terminal 100 that is currently within the wireless LAN range of the wireless LAN access point 200, the cellular communication terminal 100 is called from the cellular communication base station BS in the vicinity of the wireless LAN access point 200. Will be transmitted. In the wireless LAN access point 200, since the cellular communication unit 220 receives the radio wave transmitted from the cellular communication base station BS of cellular communication, when the cellular communication to the mobile communication terminal 100 occurs, the cellular communication unit 220 A radio wave is received and input to the control unit 210.

  The wireless radio wave from the cellular communication base station BS includes information indicating the telephone number of the target terminal in order to indicate to which terminal the transmission is made. When the cellular communication unit 220 receives such a radio wave, information is extracted and input to the control unit 210 by performing a predetermined demodulation operation. In this case (step S251: Yes), the relay operation unit 213 refers to the relay information in the storage unit 240 (step S252), and checks whether the same telephone number as the input telephone number is registered, thereby confirming the wireless LAN. It is determined whether or not the cellular communication is performed for the mobile communication terminal 100 registered in the access point 200 (step S253).

  Here, when the received cellular communication is for the mobile communication terminal 100 (step S253: Yes), the relay operation unit 213 generates a relay signal for notifying the mobile communication terminal 100 to that effect, Transmission is performed from the wireless LAN communication unit 230 to the mobile communication terminal 100 via a wireless LAN (step S254). Here, the generated relay signal is a signal obtained by packetizing at least a telephone number acquired from the received radio wave, information indicating that the telephone number is transmitted, etc. according to a predetermined protocol. And Then, by transmitting such a relay signal using the address information assigned to the mobile communication terminal 100, the mobile communication terminal 100 is notified that a call in cellular communication has occurred.

  As described above, in the mobile communication terminal 100 that receives such a relay signal, the cellular communication unit 120 is activated to start the reception operation of the cellular communication. When communication by cellular communication is started, an incoming call response indicating that is returned to the wireless LAN access point 200. Here, for example, when the mobile communication terminal 100 moves and becomes out of the wireless LAN area (out of the communication area) of the wireless LAN access point 200, a relay signal from the wireless LAN access point 200 may not be received. In this case, an incoming response is not returned from the mobile communication terminal 100 to the wireless LAN access point 200.

  If the incoming call response to the relay signal transmitted first is not returned within a predetermined time (for example, about several tens of milliseconds to less than 1 second), the relay operation unit 213 transmits the relay signal to the mobile communication terminal 100 in advance. Retry a number of times (for example, 3 to 5 times).

  When an incoming call response cannot be obtained even for such multiple times of relay signal transmission (step S255: No), the relay operation unit 213 determines that the mobile communication terminal 100 is communicating with another cellular communication. It transmits (step S156 (FIG. 9)), and it is discriminate | determined whether the busy signal was received (step S256).

  Here, when a busy signal is received from the mobile communication terminal 100 (step S256: Yes), the relay operation unit 213 controls the cellular communication unit 220 to receive the busy signal received from the mobile communication terminal 100 via cellular communication. Relay to the base station BS (step S257). That is, when the mobile communication terminal 100 is busy, the wireless LAN access point 200 relays a busy signal that is returned to the cellular communication base station BS to the cellular communication base station BS, so that the mobile communication terminal 100 Is notified that the mobile communication terminal 100 cannot currently receive a call.

  When the busy signal is relayed to the cellular communication base station BS, the flow returns to the flow of the wireless LAN communication processing (FIG. 10).

  On the other hand, when the mobile communication terminal 100 does not transmit such a busy signal (step S256: No), the relay operation unit 213 accesses the storage unit 240 and records the mobile communication terminal 100 in the relay information table. , It is determined whether or not a predetermined time or more has elapsed from the currently recorded registration date information to the current date and time (step S258). That is, as described above, the mobile communication terminal 100 within the wireless LAN area of the wireless LAN access point 200 periodically transmits terminal registration information to the wireless LAN access point 200. Every time the terminal registration information is received, the registration date / time information is updated.

  If the transmission cycle of this terminal registration information is defined in advance, the mobile communication terminal 100 is out of the wireless LAN area of the wireless LAN access point 200 if the transmission cycle has passed since the last updated registration date and time. Can be determined. Therefore, in such a case (step S259: Yes), the relay to the mobile communication terminal 100 ends, so the relay operation unit 213 accesses the storage unit 240 and deletes the relay information about the mobile communication terminal 100. Then (step S260), the process returns to the flow of the wireless LAN communication process (FIG. 10).

  As shown in FIG. 1, since a general wireless LAN communication area is smaller than a cell for cellular communication, even if the mobile communication terminal 100 is out of the wireless LAN area of the wireless LAN access point 200, the The cellular communication base station BS with which the cellular communication terminal 100 performs cellular communication may be the same as the cellular communication base station BS in the vicinity of the wireless LAN access point 200. Therefore, a situation may occur in which radio waves are transmitted from the cellular communication base station BS in the vicinity of the wireless LAN access point 200 to the mobile communication terminal 100 outside the wireless LAN area of the wireless LAN access point 200.

  On the other hand, when the wireless LAN communication unit 230 receives an incoming call response to the relay signal, it is input to the control unit 210. In this case (step S255: Yes), the relay operation unit 213 returns to the flow of the wireless LAN communication process (FIG. 10) without deleting the relay information.

  If no incoming call response is obtained but the mobile communication terminal 100 may be within the wireless LAN area of the wireless LAN access point 200 (step S255: No, step S256: No, step S259: No) In order to perform relay to the body communication terminal 100, the relay operation unit 213 returns to the flow of the wireless LAN communication process (FIG. 10) without deleting the relay information.

  As described above, when the wireless LAN access point 200 according to the present embodiment receives cellular communication for the mobile communication terminal 100 based on the terminal registration information received from the mobile communication terminal 100, the wireless LAN access point 200 uses the wireless LAN. This is notified to the mobile communication terminal 100.

  As described above, when the present invention is applied as in the above-described embodiment, a wireless terminal having a relay function can be used in a case where standby is performed with dual terminals compatible with a plurality of wireless communication systems such as cellular communication and wireless LAN communication. Since the cellular communication operation can be stopped while in the communication area of the LAN access point, the power consumption at the terminal can be greatly reduced as compared with the case where both the wireless LAN and the cellular communication are always operated.

  Even in such a case, when there is a call through cellular communication, the wireless LAN access point notifies that fact, so it is possible to reliably receive an incoming call through cellular communication, thus reducing power consumption. And convenience can be improved. Also, when the mobile communication terminal is out of the communication range of the wireless LAN access point, the relay operation for the mobile communication terminal is not performed, so that an efficient relay operation according to the line capacity or the like can be performed. it can.

  And when the communication by cellular communication is complete | finished, since a cellular communication function is stopped again, effective power consumption reduction can be aimed at.

  In addition, in the case of dual terminals that support cellular communication of different carriers, it is possible to stand by any carrier by relaying incoming calls to the wireless LAN access point, and when one carrier is communicating, busy, etc. In this case, the busy signal to be returned can be notified to the caller using the wireless LAN, so that power consumption can be reduced and convenience can be improved.

  The said embodiment is an example and the application range of this invention is not restricted to this. That is, various applications are possible, and all embodiments are included in the scope of the present invention.

  For example, in the above-described embodiment, cellular communication corresponds to a plurality of carriers. For example, when a mobile communication terminal supports one or more telephone numbers of one carrier, However, the power consumption can be reduced by applying the present invention.

  Moreover, although the case where it was the dual terminal corresponding to a some carrier about cellular communication was illustrated in the said embodiment, the some communication system and communication system which can respond as a dual terminal are not restricted to this, but are arbitrary. For example, even if the present invention is applied to a dual terminal that supports a plurality of communication systems such as CDMA2000, WCDMA, PHS, etc., the portion that operates for the cellular communication can be stopped. Reduction and improvement in convenience can be achieved.

  In the above embodiment, the wireless LAN access point determines that the mobile communication terminal is out of the wireless LAN area based on the periodic registration operation from the mobile communication terminal. The method for determining whether or not the terminal is within the wireless LAN range is not limited to this, and is arbitrary.

  In the above embodiment, the case where a wireless LAN access point used in a public wireless LAN service or the like is used is exemplified. However, the present invention is not limited to this. For example, a cellular communication base station is connected to a wireless LAN access point as described above. A relay function using a wireless LAN may be added by using the same configuration as in FIG.

  Note that, as the mobile communication terminal 100 described above, an existing mobile communication terminal that does not have these functions can be provided as well as a mobile communication terminal that has functions for realizing the present invention in advance. The program can be applied to the mobile communication terminal according to the present invention. In this case, at least a mobile communication terminal (dual terminal) that can be connected to a plurality of wireless communication systems is applied with a program for executing each process of the mobile communication terminal 100 described above. When a computer (such as a CPU) to be controlled executes the program, it can function as a mobile communication terminal according to the present invention.

  In addition, if the wireless LAN access point can add a communication function for cellular communication, the same program as the program executed by the control unit 210 of the wireless LAN access point 200 described above can be applied, so that the existing access point can be converted into the present invention. It can also be made to function as an access point.

  The application method of such a program is arbitrary. For example, the program can be applied to an arbitrary device by providing it via a communication medium such as the Internet, and a predetermined recording medium (for example, a memory card, a CD-ROM, a DVD, Etc.) can also be applied by storing and distributing the program.

It is a figure which shows the structure of the mobile communication system concerning embodiment of this invention. It is a block diagram which shows the structure of the mobile communication terminal shown in FIG. FIG. 3 is a diagram illustrating an example of information stored in a storage unit illustrated in FIG. 2, where (a) illustrates an example of information stored in a cellular communication setting storage area, and (b) is stored in a wireless LAN setting storage area. An example of information is shown. It is a functional block diagram which shows the function structure implement | achieved by the control part shown in FIG. It is a block diagram which shows the structure of the wireless LAN access point shown in FIG. It is a figure which shows the example of the information stored in the memory | storage part shown in FIG. It is a functional block diagram which shows the function structure implement | achieved by the control part shown in FIG. 3 is a flowchart for explaining “standby operation processing” executed by the mobile communication terminal shown in FIG. 1. It is a flowchart for demonstrating the "cellular communication process" performed in the standby operation process shown in FIG. 3 is a flowchart for explaining “wireless LAN communication processing” executed by the wireless LAN access point shown in FIG. 1. 11 is a flowchart for explaining “cellular communication relay processing” executed in the wireless LAN communication processing shown in FIG. 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile communication system, NW ... Communication network, CS ... Cellular communication system, BS ... Cellular communication base station, 100 ... Mobile communication terminal, 110 ... Control part, 111 ... Access point detection part, 112 ... Information registration part, DESCRIPTION OF SYMBOLS 113 ... Operation control part, 120 ... Cellular communication part, 121 ... Antenna, 130 ... Wireless LAN communication part, 131 ... Antenna, 140 ... Display part, 150 ... Input part, 160 ... Call processing part, 161 ... Speaker, 162 ... Microphone , 170 ... storage unit, 171 ... cellular communication setting storage area, 172 ... wireless LAN setting storage area, 173 ... program storage area, 200 ... wireless LAN access point, 210 ... control part, 211 ... access control part, 212 ... relay information Registration unit, 213 ... relay operation unit, 220 ... cellular communication unit, 221 ... antenna, 230 ... none LAN communication unit, 231 ... antenna, 240 ... storage unit

Claims (5)

In a wireless communication system including a mobile communication terminal including a cellular communication unit and a wireless LAN communication unit, and a wireless LAN access point,
The mobile communication terminal is
Registration means for registering the setting information used by the cellular communication unit in the wireless LAN access point when the wireless LAN access point is within communication range;
Operation control means for controlling stop / activation of the cellular communication unit,
The wireless LAN access point is
Cellular communication receiving means for receiving radio waves of cellular communication;
A relay means for relaying to the mobile communication terminal by communication with the wireless LAN communication section when the cellular communication receiving means receives a radio wave of cellular communication for the mobile communication terminal;
The operation control means includes
When the registration to the wireless LAN access point is performed by the registration unit, the cellular communication unit is stopped,
When the relay by the relay means is received, the cellular communication unit stopped is activated,
A wireless communication system. At least in a mobile communication terminal having a cellular communication function and a wireless LAN communication function,
An access point detecting means for detecting that a wireless LAN access point having a relay function to the mobile communication terminal is within a communication range;
A registration unit for registering setting information used for the cellular communication in the wireless LAN access point when the access point detection unit detects that the wireless LAN access point having the relay function is within a communication range;
While the registration means registers the setting information in the wireless LAN access point, and the access point detection means detects that the mobile communication terminal is within the communication area of the wireless LAN access point, Cellular communication stop means for stopping the cellular communication function;
Cellular communication activation means for activating the cellular communication function stopped by the cellular communication stopping means when the wireless LAN access point relays the cellular communication terminal to the mobile communication terminal. When,
A mobile communication terminal comprising: The cellular communication function corresponds to a plurality of cellular communication systems,
When the wireless LAN access point relays a call originating from another cellular communication system to the mobile communication terminal while communication is being performed by the cellular communication function activated by the cellular communication activation means, a busy signal is transmitted to the mobile communication terminal. A busy notification means for transmitting to the wireless LAN access point;
The mobile communication terminal according to claim 2 . The cellular communication stop means stops the cellular communication function again when communication by the cellular communication function started by the cellular communication start means ends.
Mobile communication terminal according to claim 2 or 3, characterized in that. At least a computer that controls a mobile communication terminal having a cellular communication function and a wireless LAN communication function,
A function of detecting that a wireless LAN access point having a relay function to the mobile communication terminal is within a communication range;
A function of registering setting information used for the cellular communication in the wireless LAN access point when it is detected that the wireless LAN access point having the relay function is within a communication range;
A function of registering the setting information in the wireless LAN access point and stopping the cellular communication function while detecting that the mobile communication terminal is within a communication area of the wireless LAN access point;
A function of starting the stopped cellular communication function when the wireless LAN access point relays the outgoing call in the cellular communication to the mobile communication terminal to the mobile communication terminal;
A program characterized by realizing.

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