JP6490943B2 - COMMUNICATION DEVICE, COMMUNICATION CONNECTION METHOD, AND COMMUNICATION DEVICE CONTROL PROGRAM - Google Patents

Description

  The present invention relates to a communication device, a communication connection method, and a communication device control program.

  In recent years, communication devices used by connecting to a plurality of networks are increasing due to maintenance of mobile networks and the Internet environment. For example, a communication device of a system that connects to a sensor network having a communication function, acquires sensor information, and aggregates the information in a center via a mobile network has a plurality of communication functions that are responsible for communication with the sensor and communication with the center.

  In such a communication device, it is necessary to increase the accuracy of connection for the communication device to communicate with each network. When the connection accuracy is low, the communication device repeats connection processing for communication, and the power of the communication device is consumed unnecessarily. Therefore, it is important for the communication device to increase the connection accuracy with the network in order to suppress the power consumption of the communication device, reduce the size of the device, and expand the application area.

  Patent Document 1 discloses a line concentrator that includes a plurality of communication ports and lightens hardware resources. Specifically, the technique of Patent Document 1 is a technique for sharing hardware resources used by a plurality of communication ports included in a line concentrator to lighten hardware resources.

  Patent Document 2 discloses a location registration process performed by a mobile station with respect to a base station. Specifically, the technique of Patent Document 2 is a technique for reducing power consumption of a mobile station and reducing battery consumption when performing location registration processing.

JP 2014-127724 A (page 3-6, FIGS. 1 and 2) Japanese Patent Laying-Open No. 2004-007762 (page 5-7, FIG. 1-3)

  The technology of Patent Document 1 is to lighten hardware resources used by a plurality of communication ports of a line concentrator. The technology of Patent Document 1 is a device adapter by transferring a TCP / IP (Transmission Control Protocol / Internet Protocol) layer, a device control protocol layer, a device object, and the like from the device adapter unit responsible for the communication port to the main body of the line concentrator. Part of the hardware. Therefore, the technique of Patent Document 1 does not increase the connection accuracy of the communication port connection processing.

  The technique of Patent Document 2 saves power by causing the mobile station apparatus to pause the position registration process for a predetermined period when the position registration process fails, and increases the connection accuracy of the connection process of the mobile station apparatus. It is not a thing.

  As described above, the techniques of Patent Documents 1 and 2 have a problem that the connection accuracy of the connection process for communication of each device cannot be increased.

  An object of the present invention is to provide a communication device, a communication connection method, and a communication device control program that can improve the connection accuracy of connection processing for communication.

  The communication apparatus of the present invention performs connection processing to the first network by the first connection signal, outputs a first state notification signal for notifying a connection state including the first reception level from the first network, A first communication means for communicating with the second network by a second connection signal and outputting a second state notification signal for notifying a connection state including a second reception level from the second network; Whether to perform connection processing with the first network or the second network based on the second communication means communicating with the first status notification signal and the second status notification signal, and the first connection signal based on the determination Alternatively, a communication control means for outputting the second connection signal is provided.

  The communication connection method of the present invention performs a connection process to a first network by a first connection signal, outputs a first state notification signal for notifying a connection state including a first reception level from the first network, and outputs the first state notification signal. To communicate with the second network by outputting a second state notification signal for notifying the connection state including the second reception level from the second network. Based on the first status notification signal and the second status notification signal, it is determined whether to perform connection processing with the first network or the second network, and the first connection signal or the second connection signal is output based on the determination. It is characterized by doing.

  The communication device control program of the present invention performs connection processing to the first network by the first connection signal, outputs a first state notification signal for notifying the connection state including the first reception level from the first network, and A first communication means for communicating with one network, and a second communication state notification signal for notifying a connection state including a second reception level from the second network by outputting a connection to the second network by a second connection signal. Whether or not the computer of the communication device having the second communication means for communicating with the second network is connected to the first network or the second network based on the first state notification signal and the second state notification signal. It is characterized by operating as communication control means for determining and outputting the first connection signal or the second connection signal based on the determination.

  ADVANTAGE OF THE INVENTION According to this invention, the connection accuracy of the connection process for communication can be improved.

It is the block which showed the example of a structure of the communication apparatus of the 1st Embodiment of this invention. It is the flowchart which showed the operation example of the communication apparatus of the 1st Embodiment of this invention. It is explanatory drawing which showed the operation example of the communication apparatus of the 1st Embodiment of this invention. It is the block diagram which showed the structural example of the communication apparatus of the 2nd Embodiment of this invention. It is the flowchart which showed the operation example of the communication apparatus of the 2nd Embodiment of this invention. It is the block diagram which showed the example of a structure of the communication apparatus of the 3rd Embodiment of this invention. It is the block diagram which showed the example of a structure of the comparison part of the communication apparatus of the 3rd Embodiment of this invention. It is the flowchart which showed the operation example of the communication apparatus of the 3rd Embodiment of this invention.

Embodiments of the present invention will be described below in detail with reference to the drawings.
(First embodiment)
A first embodiment of the present invention will be described. FIG. 1 is a block diagram illustrating a configuration example of a communication device 100 according to the first embodiment of this invention.

  With reference to FIG. 1, the communication apparatus 100 of this embodiment is demonstrated. The communication device 100 includes a first communication unit 10, a second communication unit 20, and a communication control unit 30.

  The first communication means 10 performs “connection processing” to a first network (not shown) in response to a connection signal from the communication control means 30. The “connection process” is a process for ensuring a connection for the communication device to communicate with the network according to a communication procedure with the network.

  For example, if the communication device 100 is a mobile terminal and the first network is a mobile network, the mobile terminal receives a reception signal from the mobile network and acquires synchronization information and base station information (cell search). . The mobile terminal transmits a location registration request to the base station having the base station ID included in the acquired base station information. The base station that has received the location registration request from the mobile terminal performs location registration processing in the mobile network and notifies the mobile terminal that location registration has been completed. The mobile terminal receives the location registration completion notification and completes the process of connecting to the mobile network. Thereafter, the mobile terminal can communicate with the mobile network as appropriate.

  As described above, the mobile terminal as the communication device 100 secures connection to the first network by performing cell search and location registration processing, that is, connection processing, to the mobile network that is the first network. Can do.

  The first communication means 10 communicates with the first network by outputting to the communication control means 30 a first state notification signal for notifying the “connection state” with the first network. The “connection state” indicates a connection state of communication between the communication means and the network. The first status notification signal includes information indicating whether the communication between the first communication means 10 and the first network is normally connected, the reception level of the reception signal from the first network, and the like. included.

  Similarly to the above, the second communication unit 20 performs a connection process to a second network (not shown) by a connection signal from the communication control unit 30. The second communication means 20 communicates with the second network by outputting a second state notification signal for notifying the connection state with the second network to the communication control means 30.

  The communication control unit 30 determines whether to perform connection processing with the first network or the second network based on the first state notification signal and the second state notification signal. The communication control unit 30 outputs the first connection signal or the second connection signal based on the determination result. Specific contents of the determination will be described later.

  FIG. 2 is a flowchart illustrating an operation of the first communication unit 10 performing connection processing to the first network as an operation example of the communication device 100. The operation of the communication apparatus 100 will be described with reference to FIGS. In FIG. 2, it is assumed that communication is performed between the first communication unit 10 and the first network, and a transmission / reception signal transmitted by the second communication unit 20 is regarded as noise.

  The first communication means 10 executes connection processing to the first network (S101). The communication control unit 30 causes the first communication unit 10 to perform connection processing to the first network when the communication apparatus 100 is powered on and at a predetermined timing. For example, the communication control unit 30 outputs a first connection signal to the first communication unit 10 to request connection to the first network. The first communication means 10 performs a connection process to the first network according to a predetermined communication procedure with the first network. For example, the first communication unit 10 receives a reception signal from the first network. The first communication means 10 transmits a transmission signal for requesting connection to the first network based on the received signal. The first communication means 10 waits for a response signal from the first network corresponding to the connection request. The response signal indicates whether or not the first network has completed connection processing for the connection request of the communication device 100. Based on the response signal from the first network, the first communication means 10 includes connection information indicating whether or not the connection processing with the first network has been completed, a reception state, for example, a reception level of the reception signal, etc. A first state notification signal including reception information is output.

  The communication control unit 30 confirms whether the connection process between the first communication unit 10 and the first network is completed based on the first state notification signal from the first communication unit 10 (S102). If the connection process has been completed (S103: Yes), the communication control means 30 continues to communicate with the first network via the first communication means 10 (S103).

  On the other hand, if the connection process has not been completed (S102: No), the communication control means 30 sets an initial value for the timer for retrying the connection process and starts the timer operation (S110). The communication control means 30 confirms whether the timer has counted up (S111).

  If the timer has counted up (S111: Yes), the communication control means 30 returns to the process of step S101.

  On the other hand, if the timer has not counted up (S111: No), the communication control means 30 increases the reception level of the reception signal from the first network included in the first state notification signal and causes the first predetermined signal to increase. It is confirmed whether or not the value is exceeded (S112).

  If the reception level rises and exceeds the first predetermined value (S112: Yes), the communication control means 30 returns to the process of step S101. At this time, since the reception level of the received signal from the first network is increased and exceeds the first predetermined value, the probability that the communication control unit 30 can connect in the connection process performed by the first communication unit 10 is High expectation.

  If the reception level increases but does not exceed the first predetermined value (S112: No), the communication control means 30 proceeds to the process of the next step S113. The communication control means 30 confirms whether or not the reception level of the received signal from the second network included in the second status notification signal from the second communication means 20 has dropped and has fallen below a second predetermined value ( S113).

  If the reception level is lower than the second predetermined value (S113: Yes), the communication control means 30 returns to the process of step S101. At this time, since the reception level of the received signal from the second network (which becomes a noise level in the first communication unit 10) is lower than the second predetermined value, the communication control unit 30 performs the first operation. The accuracy with which the connection can be established by the connection processing performed by the communication means 10 can be expected to be high.

  If the reception level is not lower than the second predetermined value (S113: No), the communication control means 30 returns to the process of step S111.

  In this way, the communication control unit 30 receives the reception level of the reception signal from the second network when the reception level of the reception signal from the first network does not exceed the first predetermined value even if the reception level of the reception signal from the first network increases. Is acquired from the second communication means 20. The communication control means 30 regards the acquired reception level of the received signal from the second network as a noise level, and if the noise level decreases and falls below a second predetermined value, the communication control means 30 sends the signal to the first network. A connection process is requested to the first communication means 10. Therefore, the opportunity for the communication apparatus 100 to retry the connection processing to the first network can be increased, and the connection accuracy can be increased.

  FIG. 3 is an explanatory diagram illustrating an operation example of the communication apparatus 100 according to the present embodiment. FIG. 3 illustrates conditions for the first communication unit 10 to retry connection processing to the first network. The operation of the communication device 100 will be described with reference to FIG.

  If the reception level of the received signal from the first network is increased and exceeds the first predetermined value (shown in T101), the communication control means 30 is independent of the reception level of the received signal from the second network. Then, the first communication unit is caused to perform connection processing.

  Further, the communication control means 30 acquires the reception level of the reception signal from the second network when the reception level of the reception signal from the first network increases but does not exceed the first predetermined value. . The communication control unit 30 causes the first communication unit 10 to perform connection processing when the acquired reception level is reduced and falls below a second predetermined value (shown in T102).

  Note that symbols ◎, ○, and Δ shown in Table T100 in FIG. 3 indicate the degree to which the first communication unit 10 can connect to the first network. The symbol ◎ indicates the highest degree of connection, the symbol ◯ indicates that the degree is medium, and the symbol Δ indicates that the degree is low but connection can be expected.

  As described above, the communication device 100 monitors the reception level of the received signal from the second network, which is regarded as noise when the first communication unit 10 connects to the first network, and transfers to the first network. Determine the retry of the connection process. Therefore, the communication apparatus 100 can increase the chances of retrying the connection process to the first network and increase the connection accuracy.

  As described above, the communication device according to the present embodiment can increase the connection accuracy for connection to the network by increasing the opportunities for connection processing for communication with the network.

  In the present embodiment, it has been described that the first communication unit performs the connection process to the first network. However, the first communication unit is not limited to performing the connection process. When the second communication means performs the connection process to the second network, the communication control means may determine the execution of the connection process to the second network by monitoring the reception level from the first network. . At this time, the communication control means determines the execution of the connection process by regarding the reception level of the received signal from the first network as the noise level.

  Further, in the present embodiment, it has been described that each communication unit communicates with a corresponding network. However, the partner with which each communication means communicates is not limited to the network. The partner with which each communication means communicates may be a network, a specific communication device, a communication terminal, a sensor with a communication function, or the like, and may be a partner that can communicate based on a predetermined communication procedure. That's fine. For example, the communication means may communicate with a HEMS (Home Energy Management System) terminal that performs in-house power control or a gas or water monitoring terminal. The usage amount of electric power, gas, and water may be acquired by the communication device via the communication means.

  Moreover, in this embodiment, the communication means with which a communication apparatus is provided was demonstrated as two. However, the number of communication means included in the communication device is not limited to two. That is, when the communication control unit determines whether or not to cause the communication unit to perform connection processing, it can be determined by monitoring the reception level from other communication units, and the number of communication units may be two or more.

  Further, in the present embodiment, the network in which the communication unit included in the communication device performs the connection process is described as a mobile network. However, the network communication method in which the communication device performs connection processing is not limited to the mobile network. That is, the communication method of the plurality of communication means provided in the communication device may be any method that uses the same communication medium, for example, wireless, light, or sound wave, and the communication method is not limited. For example, if a plurality of communication means of the communication device uses radio as a communication medium, the communication method is mobile communication, satellite communication, Bluetooth (registered trademark), ZigBee (registered trademark), Wi-Fi (registered trademark). ), General wireless communication such as 920 MHz band communication may be used. In addition, as long as a plurality of communication units of the communication apparatus use radio as a communication medium, the above-described radio communication may be combined as the communication method of each communication unit. That is, the plurality of communication means included in the communication device may use the same communication medium (for example, wireless for wireless, light for light, and sound wave for sound waves) and use communication frequency bands close to each other. .

  In the present embodiment, the communication control unit has been described as acquiring the reception level from a plurality of communication units and determining the execution of the connection process. However, the communication control unit may further include a data relay function that acquires received data from one communication unit and outputs the received data as transmission data to the other communication unit. For example, the communication control means may receive instruction information to the sensor through a mobile network and transmit the instruction information to the sensor, acquire the sensor information from the sensor, and transmit the sensor information to the center. For example, the communication device may acquire the amount of power, gas, and water usage and transmit it to the center via the mobile network.

The flowcharts of the communication apparatus and the determination conditions of the connection process shown in FIGS. 2 and 3 are shown as operation examples of the communication apparatus of the present embodiment, and the operations of the communication apparatus are shown in the flowcharts and determination conditions. It is not limited to things.
(Second Embodiment)
A second embodiment of the present invention will be described. FIG. 4 is a block diagram illustrating a configuration example of the communication apparatus 200 according to the second embodiment of this invention.

  With reference to FIG. 4, the communication apparatus 200 of this embodiment is demonstrated. The communication device 200 includes a first communication unit 11, a second communication unit 21, and a communication control unit 31.

  The first communication unit 11 includes a transmission unit 12, a reception unit 13, a transmission / reception processing unit 14, and an identification information unit 15. The transmission unit 12 transmits a transmission signal to a first mobile network (not shown). The receiving unit 13 receives a reception signal from the first mobile network. The identification information unit 15 stores “identification information” of the first communication unit of the communication device 200 in the first mobile network. “Identification information” is unique information for identifying a communication device in a mobile network, and is stored in a UIM (User Identity Module) card. The transmission / reception processing unit 14 performs transmission processing in which the identification information of the identification information unit 15 is added to the transmission signal and transmitted from the transmission unit 12, and the identification information included in the reception signal from the reception unit 13 is identified by the identification information unit 15. If they match with the information, the received signal is received.

  The second communication unit 21 includes a transmission unit 22, a reception unit 23, a transmission / reception processing unit 24, and an identification information unit 25. The transmission unit 22 transmits a transmission signal to a second mobile network (not shown). The receiving unit 23 receives a reception signal from the second mobile network. The identification information unit 25 stores identification information of the second communication unit of the communication device 200 in the second mobile network. The transmission / reception processing unit 24 performs transmission processing in which the identification information of the identification information unit 25 is added to the transmission signal and transmitted from the transmission unit 22, and the identification information included in the reception signal from the reception unit 23 is identified by the identification information unit 25. If they match with the information, the received signal is received.

  The communication control unit 31 determines whether to perform connection processing with the first mobile network or the second mobile network based on the first state notification signal and the second state notification signal. The communication control unit 31 outputs the first connection signal or the second connection signal based on the determination result. Specific contents of the determination will be described later.

  FIG. 5 illustrates an operation example in which the first communication unit 20 performs a connection process to the first mobile network as an operation example of the communication apparatus 200. The operation of the communication apparatus 200 will be described with reference to FIGS.

  The flowchart in FIG. 5 is different from the first embodiment in that steps S101 and S102 described in FIG. 2 are changed from steps S201 to S205. Therefore, the same steps as those in the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and changes will be described.

  The first communication unit 11 performs a cell search as a connection process to the first mobile network (S201). Specifically, the communication control unit 31 causes the first communication unit 11 to perform a cell search for the first mobile network when the communication device 200 is powered on and at a predetermined timing. The communication control unit 31 outputs a first connection signal to the transmission / reception processing unit 14 of the first communication unit 11 to request connection to the first mobile network. The transmission / reception processing unit 14 receives a reception signal from the first mobile network according to a predetermined communication procedure with the first mobile network. The transmission / reception processing means 14 confirms whether the synchronization information and the base station information of the first mobile network included in the received signal have been acquired (S202).

  If the transmission / reception processing unit 14 cannot acquire the synchronization information and the base station information (S202: No), the process returns to step 201.

  If the synchronization information and the base station information can be acquired (S202: Yes), the transmission / reception processing unit 14 transmits a location registration request signal to the base station with the base station ID included in the acquired base station information (S203). The location registration request signal is a request for registration as a communication device existing in the first mobile network, which includes the unique identification information of the first communication unit 11 stored in the identification information unit 15 as a connection process. It is. Therefore, the transmission / reception processing unit 14 creates a location registration request signal including the identification information of the identification information unit 15 and transmits it to the base station of the first mobile network from which the base station ID has been received. The base station that has received the location registration request signal performs location registration processing on the home memory of the first mobile network. The base station transmits a location registration completion notification signal for notifying that location registration has been completed.

  The transmission / reception processing unit 14 confirms whether or not a location registration completion notification signal has been received (S204). If the transmission / reception processing unit 14 has received the location registration completion notification signal (S204: Yes), the transmission / reception processing unit 14 outputs a first state notification signal that notifies the communication control unit 31 that the connection has been completed. The communication with the first mobile network by the first communication unit 11 is continuously executed (S205).

  If the transmission / reception processing unit 14 does not receive the location registration completion notification signal (S204: No), the transmission / reception processing unit 14 outputs a first state notification signal that notifies the communication control unit 31 that the connection is not completed. Sets an initial value in the timer for retrying the connection process and starts the operation of the timer (S110). The communication control unit 31 confirms whether the timer has counted up (S111).

  If the timer has counted up (S111: Yes), the communication control unit 31 returns to the process of step S201.

  On the other hand, if the timer has not counted up (S111: No), the communication control unit 31 increases the reception level of the reception signal from the first mobile network included in the first state notification signal to increase the first predetermined value. It is confirmed whether or not the value exceeds (S112).

  If the reception level increases and exceeds the first predetermined value (S112: Yes), the communication control unit 31 returns to the process of step S201. At this time, since the reception level of the reception signal from the first mobile network is increased and exceeds the first predetermined value, the probability that the communication control unit 31 can connect with the connection processing performed by the transmission / reception processing unit 14 is High expectation.

  Even if the reception level increases, if it does not exceed the first predetermined value (S112: No), the communication control unit stage 31 proceeds to the process of the next step S113. The communication control unit 31 confirms whether or not the reception level of the reception signal from the second mobile network included in the second state notification signal from the communication unit 21 has decreased below the second predetermined value (S113). ).

  If the reception level is lower than the second predetermined value (S113: Yes), the communication control unit 31 returns to the process of step S201. At this time, since the reception level of the received signal from the second mobile network (which is a noise level in the transmission / reception process 14) is lower than the second predetermined value, the communication control unit 31 performs the transmission / reception processing unit. The accuracy of the connection that can be performed by the connection processing to be performed by the network 14 is high.

  If the reception level is not lower than the second predetermined value (S113: No), the communication control unit 31 returns to the process of step S111.

  As described above, the communication control unit 31 receives the signal received from the second mobile network when the reception level of the signal received from the first mobile network is not higher than the first predetermined value even if the reception level is increased. The reception level is acquired from the transmission / reception processing unit 24. The communication control unit 31 regards the acquired reception level of the received signal from the second mobile network as a noise level, and if the noise level decreases and falls below the second predetermined value, the first mobile network To the transmission / reception processing unit 14. Therefore, the chance that the communication apparatus 200 retries connection processing to the first mobile network can be increased, and the connection accuracy can be increased.

  As described above, the communication apparatus according to the present embodiment can increase the connection accuracy for connection to the network by increasing the opportunities for connection processing for communication with the network, as in the first embodiment.

  In the present embodiment, it has been described that the first communication unit performs the connection process to the first mobile network. However, the first communication unit is not limited to performing the connection process. When the second communication unit performs connection processing to the second mobile network, the reception level from the first mobile network is monitored, and the communication control unit determines execution of connection processing to the second mobile network. May be. At this time, the communication control unit considers the reception level of the received signal from the first mobile network as the noise level and determines execution of the connection process.

  In the present embodiment, each communication unit has been described as communicating with a corresponding network. However, the partner with which each communication unit communicates is not limited to the mobile network. The partner with which each communication unit communicates may be a network other than a mobile network, or may be a specific communication device, a communication terminal, a sensor having a communication function, or the like, and performs communication based on a predetermined communication procedure. Anyone who can do it. For example, the communication means may communicate with a HEMS (Home Energy Management System) terminal that performs in-house power control or a gas or water monitoring terminal. The usage amount of electric power, gas, and water may be acquired by the communication device via the communication means. At this time, if the other party with which the communication unit communicates is a specific communication device or communication terminal, the identification information unit only needs to store unique identification information as the communication unit of the communication device.

  Moreover, in this embodiment, the communication part with which a communication apparatus is provided was demonstrated. However, the number of communication units included in the communication device is not limited to two. That is, when the communication control unit determines whether or not to make the communication unit perform connection processing, it is only necessary to monitor the reception level from other communication units, and the number of communication units may be two or more. .

  Further, in the present embodiment, the network in which the communication unit included in the communication device performs the connection process is described as a mobile network. However, communication with a network on which a communication device performs connection processing is not limited to a mobile network. That is, the communication of the plurality of communication units included in the communication device may use the same communication medium, for example, wireless, light, or sound wave, and the communication method is not limited. For example, if a plurality of communication means of a communication device uses radio as a communication medium, the communication method is general radio communication such as mobile communication, satellite communication, Bluetooth, ZigBee, Wi-Fi, 920 MHz band communication, etc. Good. In addition, as long as a plurality of communication units of the communication apparatus use radio as a communication medium, the above-described radio communication may be combined as the communication method of each communication unit. In other words, the plurality of communication units included in the communication device may use the same communication medium (for example, wireless for radio, light for light, and sound wave for sound waves) and use communication frequency bands close to each other. .

  In the present embodiment, the communication control unit has been described as acquiring the reception level from a plurality of communication units and determining the execution of the connection process. However, the communication control unit may further include a data relay function that acquires received data from one communication unit and outputs the received data as transmission data to the other communication unit. For example, the communication control unit may receive instruction information to the sensor through the mobile network and transmit the instruction information to the sensor, acquire the sensor information from the sensor, and transmit the sensor information to the center. For example, the communication device may acquire the amount of power, gas, and water usage and transmit it to the center via the mobile network.

The flowchart of the communication device shown in FIG. 5 is shown as an example of the operation of the communication device of the present embodiment, and the operation of the communication device is not limited to that shown in this flowchart.
(Third embodiment)
A third embodiment of the present invention will be described. FIG. 6 is a block diagram illustrating a configuration example of the communication apparatus 300 according to the third embodiment of the present invention.

  With reference to FIG. 6, the communication apparatus 300 of this embodiment is demonstrated. The communication device 300 is different in that the communication unit of the communication device 200 described in FIG. 4 is changed and a comparison unit is added. Therefore, the same components are assigned the same names and the same numbers, and the description thereof is omitted, and the differences will be described.

  The communication device 300 includes a first communication unit 41, a second communication unit 51, a comparison unit 60, and a communication control unit 32.

  The first communication unit 41 includes a transmission unit 12, a reception unit 42, a transmission / reception processing unit 43, and an identification information unit 15. The transmission unit 12 transmits a transmission signal to a first mobile network (not shown). The receiving unit 42 receives a reception signal from the first mobile network. The identification information unit 15 stores identification information of the first communication unit of the communication device 300 in the first mobile network. The transmission / reception processing unit 43 performs transmission processing in which the identification information of the identification information unit 15 is added to the transmission signal and transmitted from the transmission unit 12, and the identification information included in the reception signal from the reception unit 42 is identified by the identification information unit 15. If they match with the information, the received signal is received.

  The second communication unit 51 includes a transmission unit 22, a reception unit 52, a transmission / reception processing unit 53, and an identification information unit 25. The transmission unit 22 transmits a transmission signal to a second mobile network (not shown). The receiving unit 52 receives a reception signal from the second mobile network. The identification information unit 25 stores identification information of the second communication unit of the communication device 300 in the second mobile network. The transmission / reception processing unit 53 performs transmission processing in which the identification information of the identification information unit 25 is added to the transmission signal and transmitted from the transmission unit 22, and the identification information included in the reception signal from the reception unit 52 is identified by the identification information unit 25. If they match with the information, the received signal is received.

  The comparison unit 60 includes a first reception signal from the first mobile network from the reception unit 42 of the first communication unit 41, a second reception signal from the reception unit 52 of the second communication unit 51, and a second signal from the second mobile network. Each received signal is input. The comparison unit 60 compares the reception levels of the first reception signal and the second reception signal, and outputs the comparison result to the communication control unit 32 as a comparison notification signal.

  FIG. 7 is a block diagram illustrating a configuration example of the comparison unit 60 of the present embodiment. The first received signal and the second received signal are input to the bandpass filters BPF61 and BPF62, respectively, and input to the subsequent subtracting circuit 63. The subtraction circuit 63 outputs the result of subtracting the second reception signal from the first reception signal to the analog / digital converter A / D-CONV 64 at the subsequent stage. The analog / digital converter A / D-CONV 64 converts the result of subtracting the second received signal from the input first received signal from an analog value to a digital value, and outputs the converted digital value as a comparison notification signal.

  The communication control unit 32 determines whether to perform connection processing with the first mobile network or the second mobile network based on the first status notification signal, the second status notification signal, and the comparison notification signal. The communication control unit 32 outputs the first connection signal or the second connection signal based on the determination result. Specific contents of the determination will be described later.

  FIG. 8 illustrates an operation example in which the first communication unit 41 performs a connection process on the first mobile network as an operation example of the communication apparatus 300. The operation of the communication apparatus 300 will be described with reference to FIGS.

  8 is different from the second embodiment in that steps S112 and S113 described in FIG. 6 are changed to step S120. Therefore, the same steps as those in the second embodiment are denoted by the same reference numerals, description thereof is omitted, and changes are described.

  The transmission / reception processing unit 43 checks whether or not a location registration completion notification signal has been received (S204). If the transmission / reception processing unit 43 has received the location registration completion notification signal (S204: Yes), the transmission / reception processing unit 43 outputs a first state notification signal that notifies the communication control unit 32 that the connection has been completed. Then, the communication with the first mobile network by the first communication unit 41 is continued (S205).

  If the location registration completion notification signal is not received (S204: No), the transmission / reception processing unit 43 outputs a first status notification signal that notifies the communication control unit 32 that the connection is not completed, and the communication control unit 32 Sets an initial value in the timer for retrying the connection process and starts the operation of the timer (S110). The communication control unit 32 confirms whether the timer has counted up (S111).

  If the timer has counted up (S111: Yes), the communication control unit 32 returns to the process of step S201.

  On the other hand, if the timer has not counted up (S111: No), the communication control unit 32 determines whether the first reception signal and the second reception signal from the first mobile network are based on the comparison notification signal from the comparison unit 60. It is confirmed whether or not the difference between the reception levels exceeds a third predetermined value (S120).

  If the reception level difference exceeds the third predetermined value (S120: Yes), the communication control unit 32 returns to the process of step S201. At this time, since the difference between the reception level of the reception signal from the second mobile network and the reception level of the reception signal from the first mobile network exceeds the third predetermined level, the communication control unit 32 performs transmission / reception processing. The accuracy with which the connection can be made by the connection processing performed by the unit 43 can be expected to be high.

  If the reception level difference does not exceed the third predetermined value (S120: No), the communication control unit stage 32 returns to the process of step S111.

  As described above, the communication control unit 32 determines that the first level of the received signal from the second mobile network with respect to the received level of the received signal from the first mobile network exceeds the predetermined value. The transmission / reception processing unit 43 is requested to perform connection processing to the mobile network. In this embodiment, the comparison unit 60 that directly calculates the difference in reception level notifies the calculation result as a comparison notification signal, and the communication control unit 32 determines the connection process. Therefore, the communication apparatus 300 may not perform the procedure of confirming the reception level from the second mobile network after confirming the reception level from the first mobile network. Therefore, since the communication apparatus 300 can grasp the opportunity to retry in a timely manner, the connection accuracy can be further increased.

  As described above, the communication device according to the present embodiment can increase the connection accuracy for connection to the network by increasing the opportunities for connection processing for communication with the network, as in the second embodiment. In the present embodiment, the connection processing opportunity can be grasped more timely than in the second embodiment, so that the connection accuracy can be further increased.

  In the present embodiment, it has been described that the comparison unit inputs the reception signals from the first mobile network and the second mobile network to the subtraction circuit and calculates the difference in the reception level. However, the method for calculating the difference between the reception levels is not limited to that using a subtraction circuit. For example, an average value of each reception level may be obtained within a predetermined time, and a difference between the reception levels may be calculated as a difference between the average values. The difference between the obtained reception levels may be output as a comparison notification signal.

  In the present embodiment, the communication device includes two communication units. However, the number of communication units included in the communication device is not limited to two. That is, when the communication control unit determines whether or not to cause the communication unit to perform connection processing, the determination is made based on the comparison notification signal obtained by comparing the difference in reception level with the received signal from the other communication unit by the comparison unit. It is sufficient that the number of communication units is two or more.

  The flowchart of the communication device shown in FIG. 8 is shown as an example of the operation of the communication device of the present embodiment, and the operation of the communication device is not limited to that shown in this flowchart.

  Note that the present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the spirit of the present invention.

  For example, in the first and second embodiments, it has been described that it is determined whether to perform connection processing based on the reception level of the received signal from each network. However, an average value of each reception level at a predetermined time is obtained. The determination may be made based on the average value of each reception level.

  Further, the processing related to connection control in each of the above embodiments may be executed by software using a computer provided in the communication apparatus of the present invention. In other words, the connection process may be controlled by a computer program that controls the connection process being read and executed by a CPU (not shown). Even if the connection process is controlled using a program, the same process as the connection process of the above-described embodiment can be performed.

  Note that the program may be stored in a non-transitory medium such as a ROM (Read Only Memory), a RAM (Random Access Memory), a semiconductor memory device such as a flash memory, an optical disk, a magnetic disk, or a magneto-optical disk.

Part or all of the above embodiments can be described as the following supplementary notes, but is not limited to the following.
(Appendix 1)
A first communication that communicates with the first network by performing a connection process to the first network by the first connection signal, outputting a first state notification signal that notifies a connection state including a first reception level from the first network. Means,
Second communication for communicating with the second network by performing connection processing to the second network by the second connection signal, outputting a second state notification signal for notifying the connection state including the second reception level from the second network. Means,
Based on the first state notification signal and the second state notification signal, it is determined whether to perform the connection process with the first network or the second network, and based on the determination, the first connection signal or the A communication apparatus comprising communication control means for outputting a second connection signal.
(Appendix 2)
The communication apparatus according to claim 1, wherein the communication control unit detects that the first reception level has increased and exceeded a first predetermined value, and outputs the first connection signal.
(Appendix 3)
The communication according to claim 1 or 2, wherein the communication control means detects that the second reception level has dropped and has fallen below a second predetermined value, and outputs the first connection signal. apparatus.
(Appendix 4)
It is detected that the first reception level does not exceed a first predetermined value and the second reception level is lower than a second predetermined value, and the first connection signal is output. The communication apparatus according to appendix 1 or 3.
(Appendix 5)
The communication control means detects that a level difference between the first reception level and the second reception level exceeds a third predetermined value, and outputs the first connection signal. The communication device according to any one of 1 to 3.
(Appendix 6)
Supplementary notes 1 to 5, wherein the communication control means determines whether or not to perform the connection process based on an average value of each of the first reception level and the second reception level at a predetermined time. The communication apparatus in any one of.
(Appendix 7)
The communication apparatus according to any one of appendices 1 to 6, wherein the second network uses a frequency band close to a use frequency band of the first network.
(Appendix 8)
The communication apparatus according to any one of appendices 1 to 7, wherein the second network uses a frequency band close to a use radio frequency band of the first network.
(Appendix 9)
The communication apparatus according to any one of appendices 1 to 8, wherein the first network is a first mobile network.
(Appendix 10)
10. The communication apparatus according to any one of appendices 1 to 9, wherein the second network is Bluetooth, ZigBee, Wi-Fi, 920 MHz band communication, or a second mobile network.
(Appendix 11)
The communication apparatus according to any one of appendices 1 to 7, wherein the second network uses a frequency band close to an optical frequency band used by the first network.
(Appendix 12)
The communication device according to any one of appendices 1 to 7, wherein the second network uses a frequency band close to a use sound wave frequency band of the first network.
(Appendix 13)
The communication device according to any one of appendices 1 to 12, wherein the second network is a predetermined communication device or a sensor having a communication function.
(Appendix 14)
The communication device according to any one of appendices 1 to 12, wherein the second network is a HEMS terminal, a gas or water monitoring terminal.
(Appendix 15)
The second status notification signal includes second received data received from the second network;
The communication control means includes the second reception data as first transmission data in the first connection signal,
The communication apparatus according to any one of appendices 1 to 14, wherein the first communication unit transmits the first transmission data to the first network.
(Appendix 16)
The first status notification signal includes first received data received from the first network;
The communication control means includes the first reception data as second transmission data in the second connection signal,
The communication apparatus according to appendix 15, wherein the second communication means transmits the second transmission data to the second network.
(Appendix 17)
Processing to connect to the first network by the first connection signal, outputting a first state notification signal notifying of a connection state including a first reception level from the first network, and communicating with the first network;
Processing to connect to the second network by the second connection signal, outputting a second state notification signal for notifying the connection state including the second reception level from the second network, and communicating with the second network;
It is determined whether to perform the connection process with the first network or the second network based on the first status notification signal and the second status notification signal, and based on the determination, the first connection signal or A communication connection method for outputting the second connection signal.
(Appendix 18)
The first connection signal is connected to the first network by the first connection signal, and a first state notification signal for notifying the connection state including the first reception level from the first network is output to communicate with the first network. Communication means;
The second connection signal is connected to the second network by the second connection signal, and a second state notification signal for notifying the connection state including the second reception level from the second network is output to communicate with the second network. A computer of a communication device comprising communication means,
Based on the first state notification signal and the second state notification signal, it is determined whether to perform the connection process with the first network or the second network, and based on the determination, the first connection signal or the A communication device control program that operates as communication control means for outputting a second connection signal.

DESCRIPTION OF SYMBOLS 10 1st communication means 11, 41 1st communication part 12, 22 Transmission part 13, 23, 42, 52 Reception part 14, 24, 43, 53 Transmission / reception processing part 15, 25 Identification information part 20 2nd communication means 21, 51 Second communication unit 30 Communication control means 31, 32 Communication control unit 60 Comparison unit 61, 62 BPF
63 Subtraction circuit 64 A / D-CONV
100, 200, 300 Communication device

Claims (9)

A first communication that communicates with the first network by performing a connection process to the first network by the first connection signal, outputting a first state notification signal that notifies a connection state including a first reception level from the first network. Means,
Second communication for communicating with the second network by performing connection processing to the second network by the second connection signal, outputting a second state notification signal for notifying the connection state including the second reception level from the second network. Means,
Based on the first state notification signal and the second state notification signal, it is determined whether to perform the connection process with the first network or the second network, and based on the determination, the first connection signal or the Communication control means for outputting a second connection signal ;
A first frequency that is a frequency used for communication in the first network and a second frequency that is a frequency used for communication in the second network are close to each other,
It said communication control unit, communication unit and said second reception level you output the first connection signal by detecting that falls below the second predetermined value decreases. 2. The communication apparatus according to claim 1, wherein the communication control unit detects that the first reception level has increased and exceeded a first predetermined value, and outputs the first connection signal. 3. . The communication apparatus according to claim 1 , wherein the communication control unit detects that the first reception level does not exceed a first predetermined value and outputs the first connection signal. The communication control means detects that a level difference between the first reception level and the second reception level exceeds a third predetermined value, and outputs the first connection signal. Item 4. The communication device according to Item 1 or 3 . The first network is a first mobile network or / and
It said second network is Bluetooth, ZigBee, Wi-Fi, communications device according to any one of claims 1 to 4, characterized in that the 920MHz band communication or the second mobile network. The second status notification signal includes second received data received from the second network;
The communication control means includes the second reception data as first transmission data in the first connection signal,
The communication device according to any one of claims 1 to 5 , wherein the first communication unit transmits the first transmission data to the first network. The first status notification signal includes first received data received from the first network;
The communication control means includes the first reception data as second transmission data in the second connection signal,
The communication apparatus according to claim 6 , wherein the second communication unit transmits the second transmission data to the second network. Processing to connect to the first network by the first connection signal, outputting a first state notification signal notifying of a connection state including a first reception level from the first network, and communicating with the first network;
Processing to connect to the second network by the second connection signal, outputting a second state notification signal for notifying the connection state including the second reception level from the second network, and communicating with the second network;
It is determined whether to perform the connection process with the first network or the second network based on the first status notification signal and the second status notification signal, and based on the determination, the first connection signal or Outputting the second connection signal ;
A first frequency that is a frequency used for communication in the first network and a second frequency that is a frequency used for communication in the second network are close to each other,
The communication connection method according to claim 1, wherein the output of the second connection signal is performed by detecting that the second reception level is lowered and falls below a second predetermined value . The first connection signal is connected to the first network by the first connection signal, and a first state notification signal for notifying the connection state including the first reception level from the first network is output to communicate with the first network. Communication means;
The second connection signal is connected to the second network by the second connection signal, and a second state notification signal for notifying the connection state including the second reception level from the second network is output to communicate with the second network. A computer of a communication device comprising communication means,
Based on the first state notification signal and the second state notification signal, it is determined whether to perform the connection process with the first network or the second network, and based on the determination, the first connection signal or the Operating as a communication control means for outputting the second connection signal ;
A first frequency that is a frequency used for communication in the first network and a second frequency that is a frequency used for communication in the second network are close to each other,
Wherein the output of the second connection signal, the communication apparatus control program, wherein the second reception level is Ru performed by detecting that falls below the second predetermined value decreases.

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