JP5509874B2 - Communication terminal - Google Patents

Description

  The present invention relates to a communication terminal, and more particularly to a communication terminal that can establish a connection by pairing with a counter device.

  In recent years, for example, Bluetooth (registered trademark) is known as a wireless communication technology that can be applied to communication terminals including mobile phones. By using Bluetooth wireless communication technology, a communication terminal including a mobile phone can transfer audio data to an opposite device such as a headset without using an audio cable. As a specification when a communication terminal including a mobile phone performs pairing using a Bluetooth wireless communication technology, Bluetooth Specification version 2.1 + EDR (see Non-Patent Document 1) defined by Bluetooth SIG is known. On the other hand, NFC (Near Field Communication) Forum is a specification related to negotiation for determining other wireless communication methods to be handed over by NFC (Near Field Communication) for communication terminals including mobile phones. Connection Handover Technical Specification (see Non-Patent Document 2) is known. NFC is an international standard for short-range wireless communication technology performed at a distance of about 10 to 30 cm.

  A communication terminal that complies with the two specifications of Bluetooth Specification version 2.1 + EDR and Connection Handover Technical Specification has at least a communication unit applicable to the Bluetooth wireless communication method and a communication unit applicable to the NFC wireless communication method. Therefore, it is possible to perform handover (switching between communication methods) between two different communication methods.

Bluetooth Specification version 2.1 + EDR (Bluetooth SIG) Connection Handover Technical Specification (NFC Forum)

  The Bluetooth Specification version 2.1 + EDR defines a pairing method called Secure Simple Pairing (SSP). As one of the SSP pairing methods, a pairing method called Out Of Band (OOB) is defined. In the case of the pairing method called OOB, the communication terminal uses the device information and security information of the opposite device required for pairing with the opposite device that performs short-range wireless communication using Bluetooth. A mechanism for obtaining data from the opposite device using a communication method (for example, an NFC wireless communication method) is defined.

  Communication terminals that comply with the two specifications of Bluetooth Specification version 2.1 + EDR and Connection Handover Technical Specification are different from NFC communication systems based on negotiations for handover (switching communication systems) using NFC. Hand over to Bluetooth, which is a communication method. However, when the communication terminal receives a connection request from the opposite device, even if the communication terminal is handed over from the NFC communication method to the Bluetooth communication method, the communication terminal is not used unless Bluetooth is available at the time of handover. Finally, a connection cannot be established with the opposite device using Bluetooth. Specifically, even when the communication terminal receives a connection request from the opposite device, it is assumed that the communication terminal stops the Bluetooth communication unit as much as possible from the viewpoint of power saving. Under such circumstances, Bluetooth is not always available at the time of handover, and even if the communication terminal is handed over from the NFC communication method to the Bluetooth communication method, the communication terminal In some cases, it may not be possible to establish a connection with the opposite device using Bluetooth.

  In such a case, the peer device that has successfully negotiated the handover from the NFC communication method to the Bluetooth communication method will request connection until the connection using Bluetooth is established between the peer device and the communication terminal. There arises a problem that the data is repeatedly transmitted to the communication terminal. However, in any of the two specifications of Bluetooth Specification version 2.1 + EDR and Connection Handover Technical Specification, there is no provision for actual operation for solving such a problem.

  In addition, after the communication terminal negotiates handover with the first device using NFC, handover from the NFC communication method to the Bluetooth communication method is performed, and Secure Simple Pairing (SSP) by Bluetooth is started. In the meantime, there has been a problem that the communication terminal receives a connection request from a second opposite device different from the first opposite device with which the communication terminal has negotiated for handover using NFC. In this case, even if the communication terminal receives a connection request from the first opposite device after receiving a connection request from the second opposite device, the communication terminal performs a handover to Bluetooth to the first opposite device. In spite of the permission, there arises a problem that the SSP request (authentication request) based on the connection request from the first opposite device cannot be accepted. However, in any of the two specifications of Bluetooth Specification version 2.1 + EDR and Connection Handover Technical Specification, there is no provision for actual operation for solving such a problem.

  The present invention has been made in view of such a situation, and after negotiating the switching of the communication method using the first communication unit, the connection request using the second communication unit is preferable from the opposite device. An object of the present invention is to provide a communication terminal that can be accepted.

  In addition, the present invention requests a connection request using the second communication unit after the negotiation for switching the communication method using the first communication unit and before starting authentication by the second communication unit. An object of the present invention is to provide a communication terminal that can be suitably received from the opposite device.

In order to solve the above-described problem, the communication terminal according to the present invention provides a first wireless communication unit that wirelessly communicates between the communication terminal and the first opposite device, and between the communication terminal and the first opposite device. When the second wireless communication means for wireless communication with the communication terminal and the first opposing device are close to each other within a range where wireless communication can be performed by the first wireless communication means, the first wireless communication means to the second When the first wireless communication unit receives the communication method switching request for switching the communication method to the wireless communication unit from the first opposite device, the first wireless communication unit is used to respond to the communication method switching request. Communication method switching control means for switching the communication method from the first wireless communication means to the second wireless communication means and the second wireless communication means, in response to the communication method switching request. Connection request from the first device And responds to the connection request from the first opposite device using the second wireless communication means, and obtains the device information and security from the first opposite device acquired using the first wireless communication means. Based on the information, from the pairing control means for controlling the pairing with the first opposite device using the second wireless communication means, and the first opposite device using the second wireless communication means Setting means for setting a reception waiting time for waiting for the reception of the connection request, and the pairing control means includes the second wireless communication means until the reception waiting time set by the setting means elapses. Only the connection request from the first opposing device to receive is accepted, and the communication system switching control means operates differently from the pairing processing by the pairing control means until the reception waiting time set by the setting means elapses. When accepting a request related to discard the communication system switch request, the communication mode switching control means may control, when the reception waiting time set by the setting means has elapsed, and wherein the discarding said communication method switching request To do.

In order to solve the above-described problem, the communication terminal according to the present invention provides a first wireless communication unit that wirelessly communicates between the communication terminal and the first opposite device, and between the communication terminal and the first opposite device. When the second wireless communication means for wireless communication with the communication terminal and the first opposing device are close to each other within a range where wireless communication can be performed by the first wireless communication means, the first wireless communication means to the second When the first wireless communication unit receives the communication method switching request for switching the communication method to the wireless communication unit from the first opposite device, the first wireless communication unit is used to respond to the communication method switching request. Communication method switching control means for switching the communication method from the first wireless communication means to the second wireless communication means based on the communication method switching request, and the communication terminal as the first opposing device. When sending a connection request to The first wireless communication unit receives only the connection request from the first opposite device received by the second wireless communication unit, responds to the connection request from the first opposite device using the second wireless communication unit, and performs the first wireless communication. Pairing control for controlling pairing with the first counter device using the second wireless communication unit based on the device information and security information from the first counter device acquired using the means And a setting means for setting a transmission time until transmission of a connection request to the first opposing device using the second wireless communication means is completed, and the pairing control means includes second wireless communication means From the first opposing device received by the second wireless communication means before the transmission of the connection request to the first opposing device using the wireless communication device is completed and the transmission time set by the setting means elapses Accept only connection requests Communication system switch control unit, until the elapse of the transmission time set by the setting means, when accepting a request for a different pairing processing operation by the pairing controller discards the communication system switch request, the communication The mode switching control unit discards the communication mode switching request when the transmission time set by the setting unit elapses .

  According to the present invention, it is possible to preferably accept a connection request using the second communication unit from the opposite device after negotiating the switching of the communication method using the first communication unit.

  Further, according to the present invention, the connection request using the second communication unit is performed after the negotiation for switching the communication method using the first communication unit and before the authentication by the second communication unit is started. Can be suitably received from a desired opposite device.

The block diagram which shows the internal structure of the mobile telephone applicable to the communication terminal which concerns on this invention. (A) to (C) are communication using the NFC communication unit between the mobile phone 1-1 and the mobile phone 1-2 according to the present invention in the case of a pairing method called Out Of Band (OOB). FIG. The flowchart explaining the pairing control process in the mobile telephone 1-1 of FIG. 1 in case the mobile telephone 1-1 and the mobile telephone 1-2 perform pairing using a Bluetooth communication part. FIG. 3 is a sequence diagram showing specific processing between the mobile phone 1-1 (own device) and the mobile phone 1-2 (opposite device) when executing the pairing control processing described with reference to the flowchart of FIG. . The flowchart explaining the other pairing control processing in the mobile telephone 1-1 of FIG. 1 in case the mobile telephone 1-1 and the mobile telephone 1-2 perform pairing using a Bluetooth communication part. FIG. 5 is a sequence diagram showing specific processing between the mobile phone 1-1 (own device) and the mobile phone 1-2 (opposite device) when executing the pairing control processing described using the flowchart of FIG. . The flowchart explaining the other pairing control processing in the mobile telephone 1-1 of FIG. 1 in case the mobile telephone 1-1 and the mobile telephone 1-2 perform pairing using a Bluetooth communication part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an internal configuration of a mobile phone 1 applicable to a communication terminal according to the present invention. The cellular phone 1 includes a transmission / reception antenna 11, a transmission / reception duplexer 12, a radio transmission / reception unit 13, a signal processing unit 14, a data processing unit 15, a PCM codec 16, a reception amplifier 17, a receiver 18, a transmission amplifier 19, a microphone 20, and a control unit. 21, an operation unit 22, a display unit 23, a content processing unit 24, a Bluetooth communication unit 25, an NFC communication unit 26, and a storage unit 27.

  The transmission / reception antenna 11 transmits radio waves of the mobile communication system to which the mobile phone 1 corresponds, and receives radio waves of the mobile communication system to which the mobile phone 1 corresponds. The transmission / reception duplexer 12 includes a circulator, a duplexer, and the like, and transmits the radio wave received (received) by the transmission / reception antenna 11 to the wireless transmission / reception unit 13. In addition, the transmission / reception duplexer 12 sends the signal input from the wireless transmission / reception unit 13 to the transmission / reception antenna 11. The radio transmission / reception unit 13 includes a band pass filter, a gain adjustment circuit, an A / D converter, and the like, receives a radio signal having a carrier frequency instructed from the control unit 21, and outputs a local oscillation signal output from the frequency synthesizer. Mixing and frequency conversion (down-conversion) into an intermediate frequency signal, and orthogonal demodulation of the down-converted intermediate frequency signal generates a reception baseband signal. The band pass filter of the radio transmission / reception unit 13 receives a radio signal transmitted from a base station belonging to the mobile communication system, and removes noise outside the desired band from the received signal. Further, the gain adjustment circuit of the wireless transmission / reception unit 13 adjusts the signal amplitude to be handled by an A / D converter provided at the subsequent stage of the gain adjustment circuit. The A / D converter of the wireless transmission / reception unit 13 converts the signal that has passed through the band-pass filter into a baseband digital signal.

  The signal processing unit 14 performs baseband processing on the reception baseband signal (reception baseband digital signal) output from the wireless transmission / reception unit 13. The data processing unit 15 includes, for example, a DSP (Digital Signal Processor), and converts the baseband signal that has been baseband processed by the signal processing unit 14 into data and voice. That is, the data processing unit 15 first separates the received packet data for each medium, and performs a decoding process on the separated data for each medium. Specifically, when the received packet data includes audio data, for example, the data processing unit 15 decodes the audio data using a speech codec. In addition, when the received packet data includes moving image data, the data processing unit 15 decodes the moving image data using a video codec. Furthermore, when the received packet data is download content, the data processing unit 15 expands the download content. The digital audio signal obtained by the decoding process is PCM decoded by the PCM codec 16, amplified by the reception amplifier 17, and output from the receiver 18. On the other hand, the digital moving image signal decoded by the video codec is supplied to the display unit 23 via the control unit 21 and displayed.

  The wireless transmission / reception unit 13 and the signal processing unit 14 perform a series of processing such as transmission baseband processing and wireless processing for transmitting communication data to a base station belonging to the mobile communication system.

  The control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU of the control unit 21 executes various processes according to various application programs and control programs including an operating system (OS) loaded from the storage unit 27 to the RAM from the program stored in the ROM, and various processes. The mobile radio terminal 1 is comprehensively controlled by generating a control signal and supplying it to each unit. The RAM appropriately stores data necessary for the CPU to execute various processes. Specifically, the control unit 21 has a control function for realizing voice communication and data communication by the mobile communication system. Further, when performing communication control, the control unit 21 performs a transmission / reception antenna 11, a radio transmission / reception unit 13, a signal processing unit 14, a data processing unit 15, a PCM codec 16, a reception amplifier 17, a receiver 18, a transmission amplifier 19, and a microphone. Control communication processing using 20 or the like. On the other hand, the control unit 21 controls the UI processing using the operation unit 22, the display unit 23, the storage unit 27, a clock circuit (not shown), and the like.

  For example, when controlling the music player, the content processing unit 24 once decodes audio data encoded by an encoding method such as AAC or MP3 using a decoding method corresponding to the encoding method. Then, re-encoding processing or the like is performed by another encoding method (for example, SBC (Sub Band Coding)). The Bluetooth communication unit 25 is one of short-range wireless communication units included in the mobile phone 1 and includes, for example, a module that performs wireless communication using Bluetooth (registered trademark). The Bluetooth communication unit 25 performs wireless communication with a headset or another mobile phone 1 that exists in the vicinity of the mobile phone 1. Of course, wireless communication other than Bluetooth (for example, infrared communication) may be used.

  The NFC communication unit 26 is one of the short-range wireless communication units included in the mobile phone 1 and includes a module applicable to NFC, which is an international standard for short-range wireless communication technology performed at a distance of about 10 to 30 cm. The NFC communication unit 26 functions as a non-contact IC card, and can be used as, for example, a traffic ticket or an entry / exit management card. When the electromagnetic wave radiated from is received, wireless communication with the IC reader / writer is performed using various information accordingly. 1 can perform data communication with another mobile phone 1 including the NFC communication unit 26 using NFC. In the case of short-range wireless communication using the NFC communication unit 26, it is necessary to bring the NFC communication units 26 closer to each other, so that the security confirmation procedure is simplified.

  The storage unit 27 includes, for example, a flash memory element that is an electrically rewritable and erasable nonvolatile memory, an HDD (Hard Disc Drive), and the like, and includes various application programs executed by the CPU of the control unit 21 and various types. And a control program and control data of the mobile phone 1 are stored. In addition to this, the storage unit 27 appropriately stores telephone directory data in which names and telephone numbers are associated, data acquired by data communication, and downloaded data. The mobile phone 1 also includes a power supply circuit that generates a predetermined operating power supply voltage Vcc based on the output of the battery and supplies it to each circuit unit, and a clock circuit (timer) that measures the current time.

  Note that the cellular phone 1 includes a receiving amplifier 17, a receiver 18 for outputting a received voice signal, a transmission amplifier 19, a microphone 20 for inputting a transmitted voice signal, an operation unit 23 for receiving a request from a user, and received data. A display unit 24 is provided for displaying an image based thereon.

  Here, the mobile phone 1 according to the present invention includes the two short-range wireless communication units of the Bluetooth communication unit 25 and the NFC communication unit 26 as described above. When transmitting / receiving a large amount of data to / from another mobile phone 1 (opposite device) that is similarly provided with two short-range wireless communication units, the NFC communication unit 26 of each other is used first. Device information (information including device address etc.) is exchanged by negotiation. Next, the mobile phone 1 performs pairing including authentication processing by the mutual Bluetooth communication unit 25 using the device information of the other mobile phone 1 acquired by negotiation via the NFC communication unit 26. Thereafter, the mobile phone 1 transmits / receives a large amount of data to / from another mobile phone 1 using the Bluetooth communication unit 25. Here, it is possible to perform short-range wireless communication using the NFC communication unit 26 in which the security check procedure is simplified in the first stage, and then perform data communication at a higher speed than NFC communication in the second stage. Switching to the short-range wireless communication using the Bluetooth communication unit 25 (taking over) is defined as “handover”. That is, “handover” means switching between short-range wireless communication systems.

  The device information of the other mobile phone 1 acquired by the negotiation via the NFC communication unit 26 is included in the handover request from the other mobile phone 1 received at the time of negotiation via the NFC communication unit 26. Yes. When the mobile phone 1 according to the present invention receives a handover request from another mobile phone 1 and the Bluetooth communication unit 25 is in an available state, the Bluetooth communication unit 25 performs pairing including authentication processing. Therefore, this handover request is not only a request for switching the short-range wireless communication system but also a pairing request using the Bluetooth communication unit 25. In that sense, the handover request is a request directed to the pairing performed after that from the intention of the user who performs the NFC touch, and more precisely, using the NFC communication unit 26 between the two devices. This is a request exchanged at the time of handover negotiation to be performed and includes device information unique to the device.

  When the mobile phone 1 according to the present invention receives a handover request from another mobile phone 1 and the Bluetooth communication unit 25 is not in an available state, the state of the Bluetooth communication unit 25 is changed to an available state. The pairing including the authentication process is performed by the Bluetooth communication unit 25. The control unit 21 includes a communication system switching control unit 31, a communication system switching execution determination unit 32, and a pairing control unit 33 as characteristic functions according to the present invention. The communication system switching control unit (handover control unit) 31 of the control unit 21 is necessary for pairing with an opposite device (such as the mobile phone 1) that performs short-range wireless communication using the Bluetooth communication unit 25. A process of acquiring device information and security information of the opposite device from the opposite device using a communication method other than Bluetooth (for example, an NFC wireless communication method) is controlled. Specifically, the communication system switching control unit 31 controls the NFC communication unit 26 and performs the NFC communication unit 26 when pairing with the opposite device that performs short-range wireless communication using the Bluetooth communication unit 25. Is used to negotiate with another mobile phone 1 that exists in the vicinity of the mobile phone 1, receives a handover request from the other mobile phone 1 at the time of this negotiation, and receives device information (device address, etc.) specific to each other's mobile phone 1 Information) and security information are negotiated, a communication method to be switched from the NFC communication method (for example, a communication method by the Bluetooth communication unit 25) is determined, and switching (handover) to the communication method to be switched is performed. Control. In addition, the communication method switching control unit 31 determines the communication method of the switching destination when receiving the handover request, and then transmits the response to the handover request to the other mobile phone 1 as the opposite device. An inquiry about whether or not handover is possible (handover availability inquiry) is sent to the method switching execution determination unit 32. The communication mode switching control unit 31 controls switching (handover) to the switching destination communication mode according to the response to the handover possibility inquiry.

  The communication method switching execution determining unit (handover execution determining unit) 32 controls the Bluetooth communication unit 25 and switches the communication method after the communication method switching control unit 31 determines the switching destination communication method when receiving the handover request. When a handover availability inquiry from the control unit 31 is received, it is determined whether or not the Bluetooth communication unit 25 is in an available state. Here, that the Bluetooth communication unit 25 is in an available state means “a state of waiting for a Bluetooth connection request (that is, a state in which a connection request from an opposite device can be received)”. When it is determined that the Bluetooth communication unit 25 is in an available state, the communication method switching execution determining unit 32 notifies the communication method switching control unit 31 of a response to the handover availability inquiry (handover possible response). On the other hand, when the communication mode switching execution determining unit 32 determines that the Bluetooth communication unit 25 is not in an available state, the communication mode switching execution determining unit 32 notifies the communication mode switching control unit 31 of a response to the handover availability inquiry (handover failure response). The Bluetooth communication unit 25 is controlled to change the state of the Bluetooth communication unit 25 to an available state. Then, when the state of the Bluetooth communication unit 25 is changed to an available state, the communication method switching execution determination unit 32 notifies the communication method switching control unit 31 of a response to the handover availability inquiry (handover possible response).

  The pairing control unit 33 uses the Bluetooth communication unit 25 to control pairing with an opposite device (another mobile phone 1) that performs short-range wireless communication. This pairing is a pairing method called Secure Simple Pairing (SSP), for example.

  2A to 2C show an NFC communication unit 26 between the mobile phone 1-1 and the mobile phone 1-2 according to the present invention in the case of a pairing method called Out Of Band (OOB). It shows the state of communication used. As shown in FIGS. 2 (A) and 2 (B), when the mobile phone 1-1 incorporating the NFC communication unit 26 approaches the vicinity of the mobile phone 1-2, the mobile phone 1- Electromagnetic induction is generated by the electromagnetic waves radiated from 1, and the cellular phone 1-2 uses the current generated thereby to exchange data with the cellular phone 1-1 by short-range wireless communication (NFC communication). Do. Of course, the mobile phone 1-1 may be brought closer to the mobile phone 1-2, and conversely, the mobile phone 1-2 may be brought closer to the mobile phone 1-1. As shown in FIG. 2C, when NFC communication is performed between two mobile phones, the two mobile phones 1 may be overlapped with each other. Note that “NFC touch” is defined as bringing two mobile phones close to each other so that NFC communication with each other is possible, and overlapping two mobile phones 1 with each other.

  With reference to the flowchart of FIG. 3, the pairing control process in the mobile phone 1-1 of FIG. 1 when the mobile phone 1-1 and the mobile phone 1-2 perform pairing using the Bluetooth communication unit 25 will be described. To do. This pairing control process is executed by the mobile phone 1-1 when an NFC touch is performed between the two mobile phones when the mobile phone 1-1 is waiting for a Bluetooth communication connection. FIG. 4 shows a specific example between the mobile phone 1-1 (own device) and the mobile phone 1-2 (opposite device) when executing the pairing control process described with reference to the flowchart of FIG. Represents a sequence of various processes.

  In step S <b> 1, when an NFC touch is performed between the mobile phone 1-1 and the mobile phone 1-2, the communication method switching control unit 31 of the mobile phone 1-1 uses the NFC communication unit 26. Negotiation with another mobile phone 1-2 existing in the vicinity of is started. The NFC communication unit 26 of the mobile phone 1-1 receives a handover request from the other mobile phone 1-2 during negotiation with the other mobile phone (step S31 in FIG. 4). This handover request includes device information (information including a device address) unique to the other mobile phone 1-2 and security information. The device information unique to the other mobile phone 1-2 is “BD_ADDR = YYYYYY”. On the other hand, the device information unique to the mobile phone 1-1 as the own device is “BD_ADDR = XXXXXX”.

  In step S2, the communication method switching control unit 31 of the mobile phone 1-1 receives device information and security information specific to the other mobile phone 1-2 from the handover request received by the NFC communication unit 26. get. The communication method switching control unit 31 of the mobile phone 1-1 supplies the acquired device information and security information specific to the other mobile phone 1-2 to the pairing control unit 33. In step S <b> 3, the communication system switching control unit 31 of the mobile phone 1-1 determines the communication system to be switched from the NFC communication system as the communication system by the Bluetooth communication unit 25. In addition, the communication system switching control unit 31 determines a switching destination communication system when receiving a handover request, and then transmits a response to the handover request to another mobile phone 1-2 as the opposite device. Then, an inquiry about whether or not handover is possible (handover availability inquiry) is sent to the communication system switching execution determination unit 32 (step S32 in FIG. 4).

  In step S4, the communication method switching execution determining unit (handover execution determining unit) 32 controls the Bluetooth communication unit 25, and the communication method switching control unit 31 determines the switching destination communication method when receiving the handover request. When a handover availability inquiry from the communication system switching control unit 31 is received later, it is determined whether or not the state of the Bluetooth communication unit 25 is an available state. If the communication system switching execution determining unit 32 determines in step S4 that the state of the Bluetooth communication unit 25 is available, the communication system switching execution determining unit 32 responds to the handover possibility inquiry (handover) in step S5. (Acceptable) is notified to the communication system switching control unit 31 (step S34 in FIG. 4). When the communication mode switching control unit 31 receives the handover acceptable response from the communication mode switching execution determining unit 32, the communication state switching control unit 31 communicates from the NFC communication unit 26 to the Bluetooth communication unit 25 because the state of the Bluetooth communication unit 25 is available. Recognize that the method can be switched.

  Thereafter, in step S9, when the communication method switching control unit 31 recognizes that the communication method can be switched from the NFC communication unit 26 to the Bluetooth communication unit 25, the NFC communication unit 26 is used to respond to the handover request. (Handover response) is transmitted to the other mobile phone 1-2 (step S35 in FIG. 4).

  On the other hand, if the communication mode switching execution determination unit 32 determines in step S4 that the state of the Bluetooth communication unit 25 is not available, the communication mode switching execution determination unit 32 responds to the handover availability inquiry (step S6). (Handover rejection response) is notified to the communication system switching control unit 31. In step S <b> 7, the communication system switching execution determination unit 32 controls the Bluetooth communication unit 25 to change the state of the Bluetooth communication unit 25 to an available state, and starts preparation for connection by the Bluetooth communication unit 25. In step S8, when the state of the Bluetooth communication unit 25 is changed to the usable state, the communication method switching execution determining unit 32 notifies the communication method switching control unit 31 of a response to the handover feasibility inquiry (handover acceptable response). To do. In the case of the pairing control process of FIG. 3, a response to the handover availability inquiry (handover rejection response) is once notified to the communication method switching control unit 31, but this process may be omitted. Thereafter, the process proceeds to step S9.

  In step S10, the communication method switching control unit 31 notifies the Bluetooth communication unit 25 of a handover request (request to switch the communication method from the communication method by the NFC communication unit 26 to the communication method by the Bluetooth communication unit 25). The communication method is switched from the NFC communication unit 26 to the Bluetooth communication unit 25 for pairing using the communication unit 25 (step S36 in FIG. 4). At this time, when the mobile phone 1-2 which is the opposite device receives a response (handover response) to the handover request transmitted from the mobile phone 1-1 using the NFC communication unit 26, the mobile phone 1-2 Similarly to the mobile phone 1-1, the telephone 1-2 notifies the Bluetooth communication unit 25 of the handover request, and for pairing with the mobile phone 1-1 using the Bluetooth communication unit 25. The communication method is switched from the NFC communication unit 26 to the Bluetooth communication unit 25 (step S37 in FIG. 4). At this time, the communication system switching control unit 31 of the cellular phone device 1-1 permits the handover request based on the handover request (switching the communication system from the communication system by the NFC communication unit 26 to the communication system by the Bluetooth communication unit 25). The pairing control unit 33 is notified of the start of pairing with the other mobile phone 1-2.

  Thereafter, the cellular phone 1-2 transmits a connection request for requesting establishment of a Bluetooth connection with the cellular phone 1-1 to the cellular phone 1-1 via the Bluetooth communication unit 25 (step S38 in FIG. 4). . In step S <b> 11, the pairing control unit 33 of the mobile phone 1-1 receives a connection request from the mobile phone 1-2 using the Bluetooth communication unit 25. In step S12, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to start a pairing process between the two mobile phones 1 based on the received connection request. Is transmitted to the mobile phone 1-2 (step S39 in FIG. 4).

  In step S13, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to change the other information based on the device information and security information from the other mobile phone 1-2 acquired in step S2. Pairing with the mobile phone 1 is controlled (step S40 in FIG. 4). This pairing is a pairing method called Secure Simple Pairing (SSP), for example. Thereby, a Bluetooth connection is established between the mobile phone 1-1 and the mobile phone 1-2.

  The mobile phone applicable to the communication terminal according to the present invention wirelessly communicates between the communication terminal and the opposite device using the first wireless communication unit (NFC communication unit 26), and the second wireless communication unit (Bluetooth). Wireless communication between the communication terminal and the opposite device using the communication unit), and the first wireless communication when the communication terminal and the opposite device are close to each other within a range where wireless communication can be performed by the first wireless communication unit. Whether or not the state of the second wireless communication unit is an available state when the first wireless communication unit receives a communication method switching request for switching the communication method from the unit to the second wireless communication unit from the opposite device. If the second wireless communication unit is determined to be usable, the first wireless communication unit is used to respond to the communication method switching request to the opposite device and to switch the communication method. Based on the request, from the first wireless communication unit to the second When the communication method is switched to the line communication unit and the second wireless communication unit receives a connection request from the opposite device, based on the device information and the security information from the opposite device acquired using the first wireless communication unit Thus, pairing with the opposite device can be controlled using the second wireless communication unit.

  Accordingly, the mobile phone applicable to the communication terminal according to the present invention is the second wireless communication unit after negotiating the switching of the communication method using the NFC communication unit 26 which is the first wireless communication unit. A connection request using the Bluetooth communication unit 25 can be reliably accepted from the opposite device, and a seamless connection can be established.

  Note that, instead of the Bluetooth communication unit 25, a WLAN may be used as the second wireless communication unit, or another wireless communication unit may be used.

  By the way, after the mobile phone 1 negotiates handover with the first opposite device (opposite device A) using NFC, handover from the NFC communication method to the Bluetooth communication method is performed, and Secure Simple Pairing by Bluetooth is performed. Before the start of (SSP), the mobile phone 1 uses a second counter device (counter device) that is different from the first counter device (counter device A) for which the mobile phone 1 has negotiated for handover using NFC. C) receives a connection request. This is because in the case of short-range wireless communication using NFC, data communication can be performed only with a simplified security check procedure between the mobile phones 1 existing at a distance of about 10 to 30 cm.

  As a result, even if the cellular phone 1 receives a connection request from the first counter device (counter device A) after receiving a pairing request from the second counter device (counter device C), the cell phone 1 Accepts an SSP request (authentication request) based on a connection request from the first opposite device (opposite device A) despite allowing the first opposite device (opposite device A) to be handed over to Bluetooth. It becomes impossible to do. Therefore, the mobile phone 1 applicable to the communication terminal according to the present invention performs handover after the negotiation for switching the communication method using the NFC communication unit 26 and before the authentication by the Bluetooth communication unit 25 is started. Connection using the Bluetooth communication unit 25 is performed so as to accept only a connection request from the permitted first counter device (counter device A) and not to accept a pairing request from another counter device. The request can be suitably accepted from a desired opposite device. Hereinafter, the pairing control process using this method will be described.

  Referring to the flowchart of FIG. 5, another pairing control process in the mobile phone 1-1 in FIG. 1 when the mobile phone 1-1 and the mobile phone 1-2 perform pairing using the Bluetooth communication unit 25. Will be described. This pairing control process is executed by the mobile phone 1-1 when an NFC touch is performed between the two mobile phones when the mobile phone 1-1 is waiting for a Bluetooth communication connection. FIG. 6 shows a specific example between the mobile phone 1-1 (own device) and the mobile phone 1-2 (opposite device) when executing the pairing control process described with reference to the flowchart of FIG. Represents a sequence of various processes. Note that the processing in steps S61 to S64 in FIG. 5 is the same as the processing in steps S1 to S2 and steps S9 to S10 in FIG. Also, the processing of steps S101 to S104 in the sequence diagram of FIG. 6 is the same as the processing of steps S31 and S35 to S37 in the sequence diagram of FIG.

  In step S64, the communication mode switching control unit 31 of the mobile phone 1-1 sends a handover request (request to switch the communication mode from the communication mode by the NFC communication unit 26 to the communication mode by the Bluetooth communication unit 25) to the Bluetooth communication unit 25. The communication method is switched from the NFC communication unit 26 to the Bluetooth communication unit 25 for pairing using the Bluetooth communication unit 25 (step S103 in FIG. 6). At this time, the communication system switching control unit 31 of the cellular phone device 1-1 permits the handover request based on the handover request (switching the communication system from the communication system by the NFC communication unit 26 to the communication system by the Bluetooth communication unit 25). The pairing control unit 33 is notified of the start of pairing with the other mobile phone 1-2.

  In step S65, the pairing control unit 33 of the cellular phone 1-1 uses a clock circuit to set a reception standby time for waiting for reception of a connection request from another cellular phone 1-2 that has permitted the handover request. Set to a time (for example, 10 seconds). In step S66, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to wait for reception of a connection request from another mobile phone 1-2 that has permitted the handover request. At this time, the pairing control unit 33 of the mobile phone 1-1 permits and accepts only the connection request from the other mobile phone 1-2 that has permitted the handover request (step S105 in FIG. 6). At this time, the pairing control unit 33 of the mobile phone 1-1 determines that the received connection request is a handover request based on the device address included in the connection request received from another mobile phone 1 other than the mobile phone 1-1. It is determined whether or not it is a connection request from another mobile phone 1-2 that has permitted the access. The device information (device address) unique to the other mobile phone 1-2 that has permitted the handover request is “BD_ADDR = YYYYYY”.

  In step S <b> 67, the pairing control unit 33 of the mobile phone 1-1 controls the Bluetooth communication unit 25 and determines whether a connection request has been received from another mobile phone 1 other than the mobile phone 1-1. When the pairing control unit 33 determines in step S67 that the connection request has been received from another mobile phone 1 other than the mobile phone 1-1, the pairing control unit 33 determines in step S68 that the other mobile phone 1-1. It is determined whether or not the connection request received from the other mobile phone 1 is a connection request from another mobile phone 1-2 that has permitted the handover request. When the pairing control unit 33 of the mobile phone 1-1 determines in step S68 that the connection request received from the other mobile phone 1 is not a connection request from another mobile phone 1-2 that has permitted the handover request. In step S69, the pairing control unit 33 of the mobile phone 1-1 transmits a rejection response to the connection request from another mobile phone 1 that does not permit the handover request using the Bluetooth communication unit 25. (Steps S106 and S107 in FIG. 6). In step 106 in FIG. 6, since the mobile phone 1-1 has received a connection request from another mobile phone 1 (opposite device C) that does not permit the handover request, in step S107 in FIG. Then, a rejection response is transmitted in response to a connection request from another mobile phone 1 (opposite device C) that does not permit the handover request. Accordingly, it is possible to perform guard processing (reject) so as not to accept a pairing request from another mobile phone 1 (opposite device C) that does not permit a handover request.

  Thereafter, the process returns to step S66, and the mobile phone 1-1 waits for reception of a connection request from another mobile phone 1.

  On the other hand, in step S68, the pairing control unit 33 of the mobile phone 1-1 determines that the connection request received from the other mobile phone 1 is a connection request from the other mobile phone 1-2 that has permitted the handover request. In this case, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 in step S70 to start pairing processing between the two mobile phones 1 based on the received connection request. A response to the connection request is transmitted to the mobile phone 1-2 (step S108 in FIG. 6).

  In step S71, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 based on the device information and security information from the other mobile phone 1-2 acquired in step S62. Pairing with the mobile phone 1 is controlled (step S110 in FIG. 6).

  On the other hand, when the pairing control unit 33 determines in step S67 that a connection request has not been received from another mobile phone 1 other than the mobile phone 1-1, the pairing control unit 33 of the mobile phone 1-1 sets the step. In S72, it is determined whether or not the set reception standby time has elapsed. If the pairing control unit 33 of the mobile phone 1-1 determines in step S72 that the set reception standby time has not elapsed, the pairing control unit 33 of the mobile phone 1-1 determines that the user has It is determined whether or not a request regarding another operation different from the pairing process has been received by operating the operation unit 22. If the pairing control unit 33 of the mobile phone 1-1 determines in step S74 that it has not received a request for another operation different from the pairing process, the process returns to step S66, and the set reception standby time has elapsed. Until this is done, the reception of a connection request from another mobile phone 1 is kept on standby. On the other hand, when the pairing control unit 33 of the mobile phone 1-1 determines in step S72 that the set reception standby time has elapsed, or when it determines that a request related to another operation different from the pairing process has been received, The pairing control unit 33 of the mobile phone 1-1 notifies the communication method switching control unit 31 that the set reception standby time has elapsed or that a request regarding another operation different from the pairing process has been received. In step S73, the communication system switching control unit 31 discards the handover request received from the other mobile phone 1-2. Thereafter, the pairing process ends.

  The mobile phone applicable to the communication terminal according to the present invention wirelessly communicates between the communication terminal and the first opposite device using the first wireless communication unit, and the communication terminal using the second wireless communication unit. Wireless communication between the first wireless communication unit and the first opposed device, and when the communication terminal and the first opposed device are close to each other within a range where wireless communication can be performed by the first wireless communication unit, the first wireless communication unit When the first wireless communication unit receives a communication method switching request for switching the communication method to the second wireless communication unit from the first opposite device, the first wireless communication unit is used to respond to the communication method switching request. The first opposing device that responds to the first opposing device and switches the communication method from the first wireless communication unit to the second wireless communication unit based on the communication method switching request, and is received by the second wireless communication unit. Accepts only connection requests from devices and requires connection from the first device To the second wireless communication unit based on the device information and security information from the first opposing device acquired using the first wireless communication unit. It is possible to control pairing with the first opposing device.

  Thus, the mobile phone applicable to the communication terminal according to the present invention allows the NFC communication unit 26 to be used when the mobile phone waits for reception of a connection request from another mobile phone using the Bluetooth communication unit 25. From the negotiation using the communication method switching to the start of authentication by the Bluetooth communication unit 25, only the connection request from the first opposing device that has permitted the handover is accepted and the pair from the other opposing device is received. A guard process (rejection) so as not to accept a ring request, and a connection request using the Bluetooth communication unit 25 can be suitably accepted from a desired opposite device.

  In the case of FIGS. 5 and 6, the case where the mobile phone 1-1 waits for reception of a connection request from another mobile phone 1-2 using the Bluetooth communication unit 25 is described. For example, the present invention can also be applied to a case where the mobile phone 1-1 transmits a connection request to another mobile phone 1-2 using the Bluetooth communication unit 25. The pairing control process in this case is shown in the flowchart of FIG.

  Referring to the flowchart of FIG. 7, another pairing control process in the mobile phone 1-1 in FIG. 1 when the mobile phone 1-1 and the mobile phone 1-2 perform pairing using the Bluetooth communication unit 25. Will be described. Note that the processing in steps S201 to S204 in FIG. 7 is the same as the processing in steps S1 to S2 and steps S9 to S10 in FIG.

  In step S204, the communication system switching control unit 31 of the mobile phone 1-1 sends a handover request (request to switch the communication system from the communication system by the NFC communication unit 26 to the communication system by the Bluetooth communication unit 25) to the Bluetooth communication unit 25. The communication method is switched from the NFC communication unit 26 to the Bluetooth communication unit 25 for pairing using the Bluetooth communication unit 25. At this time, the communication system switching control unit 31 of the cellular phone device 1-1 permits the handover request based on the handover request (switching the communication system from the communication system by the NFC communication unit 26 to the communication system by the Bluetooth communication unit 25). The pairing control unit 33 is notified of the start of pairing with the other mobile phone 1-2.

  In step S205, the pairing control unit 33 of the cellular phone 1-1 uses a clock circuit to set a predetermined transmission time until a connection request is transmitted to another cellular phone 1-2 that has permitted the handover request. (For example, 10 seconds). In step S206, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to start transmitting a connection request to another mobile phone 1-2 that has permitted the handover request. In step S207, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to wait for reception of a connection request from another mobile phone 1-2 that has permitted the handover request. At this time, the pairing control unit 33 of the mobile phone 1-1 permits and accepts only a connection request from another mobile phone 1-2 that has permitted the handover request. At this time, the pairing control unit 33 of the mobile phone 1-1 determines that the received connection request is a handover request based on the device address included in the connection request received from another mobile phone 1 other than the mobile phone 1-1. It is determined whether or not it is a connection request from another mobile phone 1-2 that has permitted the access.

  In step S208, the pairing control unit 33 of the mobile phone 1-1 controls the Bluetooth communication unit 25 and waits until the transmission of the connection request to the other mobile phone 1-2 that has permitted the handover request. Then, it is determined whether or not a connection request is received from another mobile phone 1 other than the mobile phone 1-1. In step S208, the pairing control unit 33 connects from another mobile phone 1 other than the mobile phone 1-1 until the connection request is transmitted to the other mobile phone 1-2 that has permitted the handover request. If it is determined that the request has been received, the pairing control unit 33 determines in step S209 that the connection request received from another mobile phone 1 other than the mobile phone 1-1 is another mobile phone 1- 1 that has permitted the handover request. It is determined whether or not the request is a connection request from 2. When the pairing control unit 33 of the mobile phone 1-1 determines in step S209 that the connection request received from the other mobile phone 1 is not a connection request from another mobile phone 1-2 that has permitted the handover request. In step S210, the pairing control unit 33 of the mobile phone 1-1 transmits a rejection response to the connection request from another mobile phone 1 that does not permit the handover request using the Bluetooth communication unit 25. . Thereafter, the process returns to step S207, and the mobile phone 1-1 waits for reception of a connection request from another mobile phone 1.

  On the other hand, in step S209, the pairing control unit 33 of the mobile phone 1-1 waits for completion of transmission of the connection request to the other mobile phone 1-2 that has permitted the handover request. When it is determined that the received connection request is a connection request from another mobile phone 1-2 that has permitted the handover request, the pairing control unit 33 of the mobile phone 1-1 permits the handover request in step S211. The connection request (connection request from the own device) transmitted to the other mobile phone 1-2 is discarded. In step S212, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to start a pairing process between the two mobile phones 1 based on the received connection request. To the mobile phone 1-2. In step S213, the pairing control unit 33 of the mobile phone 1-1 uses the Bluetooth communication unit 25 to change the other information based on the device information and security information from the other mobile phone 1-2 acquired in step S202. Pairing with the mobile phone 1 is controlled.

  On the other hand, in step S208, the pairing control unit 33 completes the transmission of the connection request to the other mobile phone 1-2 that has permitted the handover request, and the other mobile phone 1 other than the mobile phone 1-1. When it is determined that the connection request is not received from the mobile phone 1-1, the pairing control unit 33 of the mobile phone 1-1 determines whether or not the set transmission time has elapsed in step S214. When the pairing control unit 33 of the mobile phone 1-1 determines in step S214 that the set transmission time has not elapsed, the pairing control unit 33 of the mobile phone 1-1 is operated by the user in step S216. It is determined whether or not a request relating to another operation different from the pairing process has been received by operating the unit 22. If the pairing control unit 33 of the mobile phone 1-1 determines in step S216 that it has not received a request regarding another operation different from the pairing process, the process returns to step S207 to return another request for permitting the handover request. As long as the transmission of the connection request to the mobile phone 1-2 is not completed, the reception of the connection request from another mobile phone 1 is kept on standby until the set transmission time elapses. On the other hand, if the pairing control unit 33 of the mobile phone 1-1 determines in step S216 that the set transmission time has elapsed, or if it determines that a request regarding another operation different from the pairing process has been received, The pairing control unit 33 of the telephone set 1-1 notifies the communication system switching control unit 31 that the set transmission time has elapsed and that a request regarding another operation different from the pairing process has been received. In step S215, the communication system switching control unit 31 discards the handover request received from the other mobile phone 1-2. Thereafter, the pairing process ends.

  The mobile phone applicable to the communication terminal according to the present invention wirelessly communicates between the communication terminal and the first opposite device using the first wireless communication unit, and the communication terminal using the second wireless communication unit. Wireless communication between the first wireless communication unit and the first opposed device, and when the communication terminal and the first opposed device are close to each other within a range where wireless communication can be performed by the first wireless communication unit, the first wireless communication unit When the first wireless communication unit receives a communication method switching request for switching the communication method to the second wireless communication unit from the first opposite device, the first wireless communication unit is used to respond to the communication method switching request. While responding to the first opposing device, based on the communication method switching request, the communication method is switched from the first wireless communication unit to the second wireless communication unit, and the communication terminal makes a connection request to the first opposing device. The first device that the second wireless communication unit receives when transmitting From the first counter device that receives only the connection request from the first device, responds to the connection request from the first counter device using the second radio communication unit, and is acquired using the first radio communication unit Based on the device information and the security information, pairing with the first device can be controlled using the second wireless communication unit.

  As a result, the mobile phone applicable to the communication terminal according to the present invention is such that when the mobile phone 1-1 transmits a connection request to another mobile phone 1-2 using the Bluetooth communication unit 25, the NFC communication unit 26, after only negotiating the switching of the communication method using the H.26, until the authentication by the Bluetooth communication unit 25 is started, only the connection request from the first opposing device that permits the handover is accepted and from the other opposing device Thus, it is possible to suitably accept a connection request using the Bluetooth communication unit 25 from a desired opposite device so as not to accept a pairing request.

  The series of processes described in the embodiments of the present invention can be executed by software, but can also be executed by hardware.

  In the embodiment of the present invention, the steps of the flowchart show an example of processing that is performed in time series in the order described. However, even if they are not necessarily processed in time series, they are executed in parallel or individually. The processing to be performed is also included.

  DESCRIPTION OF SYMBOLS 1 (1-1 thru | or 1-2) ... Mobile telephone, 11 ... Transmission / reception antenna, 12 ... Transmission / reception duplexer, 13 ... Radio transmission / reception part, 14 ... Signal processing part, 15 ... Data processing part, 16 ... PCM codec, 17 ... Receiving amplifier, 18 ... receiver, 19 ... transmitting amplifier, 20 ... microphone, 21 ... control unit, 22 ... operation unit, 23 ... display unit, 24 ... content processing unit, 25 ... Bluetooth communication unit, 26 ... NFC communication unit, 27: Storage unit, 31: Communication system switching control unit, 32: Communication system switching execution determination unit, 33 ... Pairing control unit.

Claims (4)

First wireless communication means for performing wireless communication between the communication terminal and the first opposite device;
Second wireless communication means for performing wireless communication between the communication terminal and the first opposite device;
Communication method from the first wireless communication unit to the second wireless communication unit when the communication terminal and the first opposing device are close to each other within a range where the first wireless communication unit can perform wireless communication. When the first wireless communication unit receives the communication method switching request for switching between the first opposed device and the first opposed communication device with respect to the communication method switching request using the first wireless communication unit. A communication mode switching control unit that responds to the device and switches the communication mode from the first wireless communication unit to the second wireless communication unit based on the communication mode switching request;
Accepts only a connection request from the first opposite device received by the second wireless communication means, responds to a connection request from the first opposite device using the second wireless communication means, Based on device information and security information from the first opposite device acquired using the first wireless communication means, between the first opposite device using the second wireless communication means. A pairing control means for controlling the pairing of
Setting means for setting a reception waiting time for waiting for reception of a connection request from the first opposing device using the second wireless communication means;
The pairing control unit accepts only a connection request from the first opposite device received by the second wireless communication unit until the reception standby time set by the setting unit elapses,
When the communication mode switching control unit accepts a request regarding an operation different from the pairing process by the pairing control unit until the reception waiting time set by the setting unit elapses, the communication mode switching request discard the,
The communication terminal, wherein the communication system switching control unit discards the communication system switching request when the reception standby time set by the setting unit has elapsed . First wireless communication means for performing wireless communication between the communication terminal and the first opposite device;
Second wireless communication means for performing wireless communication between the communication terminal and the first opposite device;
Communication method from the first wireless communication unit to the second wireless communication unit when the communication terminal and the first opposing device are close to each other within a range where the first wireless communication unit can perform wireless communication. When the first wireless communication unit receives the communication method switching request for switching between the first opposed device and the first opposed communication device with respect to the communication method switching request using the first wireless communication unit. A communication mode switching control unit that responds to the device and switches the communication mode from the first wireless communication unit to the second wireless communication unit based on the communication mode switching request;
When the communication terminal transmits a connection request to the first opposite device, only the connection request from the first opposite device received by the second wireless communication unit is accepted, and the first opposite device is received. Responding to a connection request from a device using the second wireless communication means, based on device information and security information from the first opposing device acquired using the first wireless communication means A pairing control means for controlling pairing with the first opposing device using the second wireless communication means;
Setting means for setting a transmission time until completion of transmission of a connection request to the first opposing device using the second wireless communication means;
The pairing control means does not complete transmission of the connection request to the first opposite device using the second wireless communication means, and until the transmission time set by the setting means elapses. Accepting only the connection request from the first opposing device received by the second wireless communication means in the meantime,
When the communication mode switching control unit accepts a request regarding an operation different from the pairing process by the pairing control unit until the transmission time set by the setting unit elapses, the communication mode switching control unit Destroy ,
The communication terminal, wherein the communication system switching control unit discards the communication system switching request when the transmission time set by the setting unit has elapsed . The communication terminal according to claim 1 or 2 , wherein the first wireless communication unit is a non-contact communication method using NFC. The communication terminal according to claim 1 or 2 , wherein the second wireless communication means is a Bluetooth or WLAN communication system.

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