JP5129849B2 - Communication function selection method - Google Patents

Description

  The present invention relates to a communication function selection method in a communication system in which a program execution unit that executes an application program is connected to a connection destination via a communication network.

  Conventionally, there is a communication connection unit that connects a program execution unit that executes an application program to a communication network. Here, the program execution unit includes, for example, a personal computer (hereinafter referred to as “PC”), and the communication connection unit includes, for example, a data communication card used by being connected to a PC. When there is a connection request to the communication network from the program execution unit, such a communication connection unit selects a communication function (for example, IPv4, IPv6, etc.) according to the connection destination requested to connect, and the program is selected by the selected communication function. The execution unit is connected to the communication network. Here, the communication connection unit includes a table in which which communication function is used for connection for each connection destination requested by the program execution unit, and performs communication according to the table provided in advance. A function is selected. An example of selecting a communication function using a table and connecting to a communication network is described in Patent Document 1, for example.

JP 2008-42460 A

  Here, the communication function that can be used when the program execution unit connects to a predetermined connection destination may be changed due to version upgrade or setting change of the application program. However, since the conventional apparatus has a table in which a communication method to be used for each connection destination is set in advance, the communication function that can be used by the program execution unit when connecting to a predetermined connection destination and the table include There may be a discrepancy between the communication function used when connecting to the set destination. Due to this mismatch in communication functions, there is a problem that the program execution unit cannot connect to a predetermined connection destination.

  Therefore, in view of the above problems, the present invention provides a communication function selection method capable of reliably connecting to a connection destination by a communication connection unit even when the application of the program execution unit is changed. Objective.

In order to solve the above-described problem, a communication function selection method according to the present invention includes a program execution unit that executes an application program, and a communication connection unit that connects the program execution unit to a connection destination via a communication network. A communication function selection method in a system, wherein the program execution unit is a connection request to the communication connection unit that is a connection request to a predetermined connection destination, and indicates a plurality of connection requests indicating different communication functions. A step of receiving the plurality of connection requests made by the program execution unit, and the communication connection unit being used in the plurality of connection requests received in the receiving step. the different communication and function communication function identification step of identifying, the communication connection unit, the communication function identification step at the identified said different That using the one communication function type signal is set based on the communication function, characterized in that it comprises a connection step of connecting said program execution unit to the predetermined connection destination.

  According to this invention, the program execution unit makes a connection request to a predetermined connection destination to the communication connection unit using a predetermined communication function. When receiving the connection request made by the program execution unit, the communication connection unit identifies the communication function used in the connection request. The communication connection unit connects the program execution unit to a predetermined connection destination using a communication function corresponding to the identified communication function. For this reason, the communication connection unit can identify a communication function that can be used by the program execution unit, and can connect to a predetermined connection destination using the identified communication function. Even if there is a change in the application program of the program execution unit, the communication connection unit reliably connects the program execution unit to the predetermined connection destination using the communication function that can be used at present. You can connect to the connection destination.

  In addition, the communication connection unit includes a connection destination information storage unit that stores information on the communication function used for connection to the connection destination for each connection destination, and the communication function selection method includes the communication connection unit. For connecting the program execution unit to the predetermined connection destination based on the communication function stored in the connection destination information storage unit and the communication function identified in the communication function identification step. A communication function determining step for determining the communication function of the communication function, wherein in the connection step, the communication connection unit uses the communication function determined in the communication function determination step to It is preferable to connect to a predetermined connection destination.

  As a result, the communication connection unit connects the program execution unit to a predetermined connection destination based on the communication function stored in the connection destination information storage unit and the communication function identified in the communication function identification step. Determine the communication function. Then, the communication connection unit can connect the program execution unit to a predetermined connection destination based on the determined communication function. Thereby, the connection to a predetermined connection destination can be controlled based on the information regarding the communication function stored in the connection destination information storage unit. For example, communication can be attempted even if the communication function stored in the connection destination information storage unit is different from the communication function identified in the communication function identification step. As a result of the communication attempt, a case where connection is possible is also assumed. In this case, the connection possibility of communication can be improved. Further, when communication is not attempted, the processing can be simplified as much as the connection processing is not performed.

In the communication function selection method, the communication connection unit acquires a region information acquisition step in which the communication connection unit acquires information on the communication network in which the communication connection unit exists, and the communication connection unit includes the communication function identification. The program execution unit is connected to the predetermined connection based on the communication function identified in step and information on the communication network in which the communication connection unit acquired in the location information acquisition step exists. A communication function determining step for determining the communication function for connecting to the destination, and in the connecting step, the communication connecting unit uses the communication function determined in the communication function determining step, It is preferable to connect the program execution unit to the predetermined connection destination.

  Thereby, a communication connection part acquires the information regarding the communication network in which the said communication connection part exists. The communication connection unit is configured to connect the program execution unit to a predetermined connection destination based on the communication function identified in the communication function identification step and information on the communication network in which the communication connection unit is located. Determine the communication function. Then, the communication connection unit can connect the program execution unit to a predetermined connection destination based on the determined communication function. Thereby, even if the communication function that can be used differs for each communication network in which the communication connection unit is located, the program execution unit can be reliably connected to the connection destination.

In the communication function selection method, the communication connection unit acquires a communication mode information acquisition step of acquiring information about a communication mode of the communication network in which the communication connection unit is located, and the communication connection unit Based on the communication function identified in the communication function identification step and the information on the communication mode acquired in the communication mode information acquisition step, the program execution unit for connecting to the predetermined connection destination A communication function determining step for determining a communication function, wherein in the connecting step, the communication connecting unit uses the communication function determined in the communication function determining step to cause the program execution unit to It is preferable to connect to a connection destination.

  Thereby, a communication connection part acquires the information regarding the communication mode of the communication network in which the said communication connection part exists. Further, the communication function unit determines a communication function for connecting the program execution unit to a predetermined connection destination based on the communication function identified in the communication function identification step and the acquired information on the communication mode. Can do. Then, the communication connection unit can connect the program execution unit to a predetermined connection destination using the determined communication function. Thereby, even if the communication function that can be used differs for each communication mode of the communication network in which the communication connection unit is located, the program execution unit can be reliably connected to the connection destination.

The communication function selection method includes a connection unit communication mode information acquisition step in which the communication connection unit acquires information on a communication mode used by the communication connection unit, and the communication connection unit includes the communication function identification step. Based on the identified communication function and information on the communication mode used by the communication connection unit acquired in the connection unit communication mode information acquisition step, the program execution unit is connected to the predetermined connection destination. A communication function determining step for determining the communication function to be performed, wherein the communication connecting unit uses the communication function determined in the communication function determining step to use the program execution unit. Is preferably connected to the predetermined connection destination.

  Thereby, a communication connection part acquires the information regarding the communication mode which the said communication connection part can use. In addition, the communication function unit has a communication function for connecting the program execution unit to a predetermined connection destination based on the communication function identified in the communication function identification step and information on the communication mode used by the communication connection unit. Can be determined. Then, the communication connection unit can connect the program execution unit to a predetermined connection destination using the determined communication function. Thereby, according to the communication mode which a communication connection part uses, a program execution part can be reliably connected to a connecting point.

The communication function selection method of the present invention is a communication function selection in a communication system comprising a program execution unit for executing an application program and a communication connection unit for connecting the program execution unit to a connection destination via a communication network. A connection requesting step in which the program execution unit makes a connection request to the predetermined connection destination using a predetermined communication function to the communication connection unit, and the communication connection unit includes the program A reception step of receiving the connection request made by the execution unit; a communication function identification step of identifying the communication function used in the connection request received by the communication connection unit in the reception step; and the communication connection The program execution unit using the communication function corresponding to the communication function identified in the communication function identification step. A connection step of connecting to said predetermined connection destination, the connection request is received by the reception step, a timer step of prescribed time counting process, while being timed processed by the timer step, in said receiving step Additionally and a determination step of determining the presence or absence of the reception of another connection request, in the determination step, when it is determined that there is another connection request, in the communication function identification step, in addition to the connection request It is preferable to identify a communication function used in the other connection request.

  As a result, even if connection requests are received with a time lag, other connection requests can be accepted while the time is counted for a predetermined time, and the communication function used in other connection requests in addition to the connection request can be accepted. Can be identified.

  In the communication function selection method of the present invention, when it is determined that there is no other connection request in the determination step, the communication function used in the connection request is identified in the communication function identification step. preferable.

  Thereby, when another connection request is not received while the predetermined time is counted, the communication function based on the already received connection request can be identified.

  In addition, the communication function selection method of the present invention, after receiving a further connection request in the reception step after the predetermined time is counted by the timer step, rejects the other connection request. It is preferable to further include a reply step for replying.

  As a result, when another connection request is received after being measured for a predetermined time, a rejection of the other connection request can be returned, and the connection request source can know in advance that the connection cannot be made, Efficient communication processing can be realized.

  According to the present invention, even if there is a change in the application or the like of the program execution unit, the communication connection unit can reliably connect to the connection destination.

It is a figure which shows the system configuration | structure of the communication system in 1st Embodiment. 5 is a correspondence table between a connection request signal and a PDP type set when connecting to a predetermined connection destination. It is a flowchart which shows the flow of a communication connection process. It is a figure which shows the flow of the signal transmitted / received. It is a figure which shows the system configuration | structure of the communication system in 2nd Embodiment. It is a figure which shows the data preserve | saved in the connection destination information preservation | save part. 5 is a correspondence table between a connection request signal and a PDP type set when connecting to a predetermined connection destination. It is a figure which shows the system configuration | structure of the communication system in 3rd Embodiment. 5 is a correspondence table between a connection request signal and a PDP type set when connecting to a predetermined connection destination. It is a flowchart which shows the flow of a communication connection process. It is a figure which shows the system configuration | structure of the communication system in 4th Embodiment. 5 is a correspondence table between a connection request signal and a PDP type set when connecting to a predetermined connection destination. It is a flowchart which shows the flow of a communication connection process. It is a figure which shows the system configuration | structure of the communication system in 5th Embodiment. 5 is a correspondence table between a connection request signal and a PDP type set when connecting to a predetermined connection destination. It is a flowchart which shows the flow of a communication connection process. It is a figure which shows the flow of the signal transmitted / received. It is a figure which shows the system configuration | structure of the communication system with which TE, TA, and MT were integrated in the same apparatus. It is a sequence diagram when only “IPCP: Configure-request” which is a connection request signal is received. FIG. 11 is a sequence diagram showing processing when an “IPv6CP: Configure-request” signal is further received after receiving an “IPCP: Configure-request” signal. FIG. 10 is a sequence diagram showing processing when an “IPv6CP: Configure-request” signal is further received after receiving a “IPCP: Configure-request” signal and counting up a timer.

  Embodiments of the present invention will be described with reference to the accompanying drawings. Where possible, the same parts are denoted by the same reference numerals, and redundant description is omitted.

  [First Embodiment]

  In the first embodiment, the communication function identifying unit identifies the communication function used in the connection request signal transmitted by the TE, and the TA connects the TE to the connection destination based on the identification result.

  (Overall configuration of communication system in the first embodiment)

  FIG. 1 is a diagram illustrating an overall configuration of a communication system 1 according to the first embodiment. As shown in FIG. 1, the communication system 1 connects Terminal Equipment 2 (hereinafter referred to as “TE2”) (corresponding to “program execution unit” in the claims) that executes an application program and TE2 to a communication network. Communication terminal 3 (corresponding to “communication connection unit” in the claims). For example, a PC that executes an application program can be used as the TE2. The communication terminal 3 can be a data communication card used by connecting to a PC, for example.

  The TE 2 includes a communication-related function unit 20 that is used to connect to a connection destination on the communication network when the application program is executed. The communication-related function unit 20 transmits a connection request signal for requesting connection to a predetermined connection destination toward the communication terminal 3 at the start of connection to the connection destination.

  The communication terminal 3 includes a terminal adaptation 30 (hereinafter referred to as “TA30”) and a mobile termination 31 (hereinafter referred to as “MT31”). The TA 30 serves as an interface when a connection request is received from the communication related function unit 20 of the TE 2. The MT 31 transmits and receives data on the communication network under the control of the TA 30. Further, the TA 30 identifies the communication function used in the connection request based on the connection request signal transmitted from the communication-related function unit 20. In the first embodiment, TA30 is assumed to be a modem type.

  The TA 30 includes a communication function identification unit 50 and a correspondence table storage unit 51. The communication function identifying unit 50 identifies the communication function (PDP type) used for transmitting the connection request signal. Here, it is assumed that IPv4, IPv6, and IPv4v6 are included in PDPtype. Further, in the correspondence table storage unit 51, for example, as shown in FIG. 2, the PDP type used for transmitting the connection request signal and the PDP type set when the TE 2 is connected to a predetermined connection destination on the communication network. The correspondence table is stored.

  Although TE2 is not shown, TE2 has a basic configuration of a normal information processing apparatus (that is, a CPU, a RAM, a ROM, an input device for inputting information and commands, a storage device for storing information, and the like). Needless to say. The communication terminal 3 also has a basic configuration of a normal communication device (that is, a CPU, a RAM, a ROM, a wireless communication antenna, etc.) although not shown.

  (Communication connection processing)

  Next, the flow of processing when TE2 is connected to a predetermined connection destination via a communication network will be described. FIG. 3 is a flowchart showing a flow of processing performed in the communication system 1 when the TE 2 is connected to a predetermined connection destination. FIG. 4 is a diagram illustrating a flow of signals transmitted and received by each unit of the communication system 1 when the TE 2 is connected to a predetermined connection destination.

  First, in step S101 of FIG. 3, the TE 2 and the communication terminal 3 are prepared between the communication-related function unit 20 of the TE 2 and the TA 30 of the communication terminal 3 as a communication start preparation for performing communication via the communication network. Establish communication. That is, in the example shown in FIG. 4, the communication-related function unit 20 of the TE 2 transmits a “communication start request” signal to the TA 30, and the “Connect” indicating that the TA 30 accepts the communication start to the communication-related function unit 20. "Signal. Then, an LCP (Link Control Protocol) is established between the communication-related functional unit 20 and the TA 30, and PAP (Password Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) are set.

  Next, in step S102, the communication-related function unit 20 transmits a connection request signal for requesting connection to a predetermined connection destination to the TA 30. That is, in the example illustrated in FIG. 4, the “IPCP: Configure-request” signal and the “IPv6CP: Configure-request” signal are transmitted to the TA 30 from the communication-related functional unit 20 of the TE 2 as connection request signals. In the example illustrated in FIG. 4, it is assumed that the communication-related functional unit 20 and the TA 30 can use both IPv4 and IPv6 as PDP types. Step S102 corresponds to a “connection request step” in the claims.

  In step S103, the TA 30 receives the connection request signal transmitted from the communication-related function unit 20. Note that step S103 corresponds to a “reception step” in the claims. In step S104, the communication function identifying unit 50 identifies the PDP type used when the communication-related function unit 20 transmits the connection request signal based on the received connection request signal. In the example shown in FIG. 4, since the TA 30 receives the “IPCP: Configure-request” signal and the “IPv6CP: Configure-request” signal as connection request signals, the communication function identifying unit 50 receives the connection request signal. Identify PDPtype as being IPv4 and IPv6. Note that step S104 corresponds to a “communication function identification step” in the claims.

  Next, in step S105, the TA 30 determines the corresponding PDP type based on the PDP type identified by the communication function identifying unit 50, and uses the determined PDP type when connecting the TE 2 to the connection destination for which the connection request has been made. Set as the PDP type. For this setting, for example, as in the correspondence table shown in FIG. 2, when the connection request signal is only IPCP, the PDP type is set to IPv4. When the connection request signal is only IPv6CP, the PDP type is set to IPv6, and when the connection request signal is both IPCP and IPv6CP, the PDP type is set to IPv4v6. In step S106, the TA 30 communicates with a predetermined connection destination on the communication network through the MT 31 using the set PDP type, and connects the TE 2 and the predetermined connection destination. Steps S105 and S106 correspond to a “connection step” in the claims.

  That is, in the example shown in FIG. 4, since TA30 has received both IPCP and IPv6CP as connection request signals (Configure-request), IPv4v6 is set as the PDP type based on the correspondence table shown in FIG. Then, the TA 30 transmits an “Activate PDP context req” signal to the MT 31 in order to connect the TE 2 to a predetermined connection destination. The MT 31 transmits an “Activate PDP context req” signal to a predetermined connection destination on the communication network, and receives an “Activate PDP context accept” signal transmitted from the predetermined connection destination via the communication network. The MT 31 transmits the received “Activate PDP context accept” signal to the TA 30. Then, the TA 30 transmits the “IPCP: Configure-Ack” signal and the “IPv6CP: Configure-Ack” signal to the communication-related functional unit 20 of the TE 2, thereby connecting the TE 2 to a predetermined connection destination. .

  Here, a modified example of the connection request signal reception process of S103 will be described. This modification relates to processing when connection request signals (Configure request) having different contents are received at the TA 30 with a time lag. FIG. 19 is a sequence diagram when only one connection request signal is received. Communication connection processing is performed between TE2 and TA30. That is, a communication start request is output from TE2, and TA30 receives the communication start request and outputs a “conncet” signal. Then, LCP processing and PAP / CHAP processing are performed between TE2 and TA30. Up to this point, the process is the same as in FIG.

  Thereafter, “IPCP: Configure-request” which is a connection request signal for requesting connection by IPv4 from TE2 is transmitted. In TA30, when this connection request signal is received, a timer is started and a predetermined time is counted. In the meantime, when another connection request signal (for example, “IPv6CP: Configure-request” signal) is not received, a connection request signal (IPCP: Configure-request) for requesting a connection by IPv4 that has already been received. The PDP type is set based on the above. In FIG. 19, PDPtype is set to IPv4.

  Thereafter, connection processing is performed by the same processing as in FIG. In FIG. 19, since IPv4 is set as the PDP type, processing for connection using IPv4 is performed. That is, for connection processing for IPv4, information such as an IP address by IPv4 is received from the communication network via the MT, and the TA 30 outputs “IPCP: Configure-Ack” and IPv4 address to TE2. Thereafter, communication processing by IPv4 is realized.

  In FIG. 19, the case where the “IPCP: Configure-request” signal is received has been described, but when the “IPv6 CP: Configure-request” signal is received instead of the “IPCP: Configure-request” signal, A timer may be started in the same manner as described above, and then IPv6 may be set as the PDP type.

  By such processing, when the “IPv6CP: Configure-request” signal is not received during the predetermined time, the communication function based on the already received “IPCP: Configure-request” signal is identified. be able to.

  Next, the processing when the TA 30 receives an “IPCP: Configure-request” signal and then receives an “IPv6CP: Configure-request” signal will be described. FIG. 20 is a sequence diagram showing the processing at that time. Similarly to FIG. 19, a communication start request, a connect signal, LCP, and PAP / CHAP connection processing are performed between TE2 and TA30.

  Thereafter, a connection request signal (IPCP: Configure-request) for requesting connection by IPv4 is transmitted from TE2. In TA30, when this connection request signal is received, a timer is started and a predetermined time is counted. When the “IPv6CP: Configure-request” signal, which is another connection request signal, is received while the timer is timing, after the timer has counted up, the “IPCP: Configure-request” signal and the “IPv6CP” : PDP type is set based on the “Configure-request” signal. In FIG. 20, PDPtype is set to IPv4v6.

  Similarly to FIG. 4, in the TE 2, the “IPCP: Configure-Ack” signal and the “IPv6CP: Configure-Ack” signal are received from the TA 30.

  In FIG. 20, the processing when the “IPv6CP: Configure-request” signal is received after receiving the “IPCP: Configure-request” signal has been described, but the same processing is performed in the opposite case. May be.

  By such processing, even if the “IPv6CP: Configure-request” signal and the “IPCP: Configure-request” signal are received with a time lag, other connection requests are not received while the timer is counting the predetermined time. The communication function corresponding to both the “IPv6CP: Configure-request” signal and the “IPCP: Configure-request” signal can be identified.

  Next, the processing when the TA30 receives the “IPCP: Configure-request” signal and the timer counts up, and then receives the “IPv6CP: Configure-request” signal will be described. FIG. 21 is a sequence diagram showing the processing at that time. Similarly to FIG. 19, a communication start request, a connect signal, LCP, and PAP / CHAP connection processing are performed between TE2 and TA30.

  Thereafter, a connection request signal (IPCP: Configure-request) for requesting connection by IPv4 is transmitted from TE2. In TA30, when this connection request signal is received, a timer is started and a predetermined time is counted. Meanwhile, if no other connection request signal is received, the PDP type is set based on the received connection request signal (IPCP: Configure-request) for requesting connection by IPv4. In FIG. 21, PDPtype is set to IPv4.

  After the PDP type setting process is completed, an “IPv6CP: Configure-request” signal is transmitted from TE2 to TA30. In this modification, since IPv4 is already set as the PDP type and the processing is started, an “LCP Protocol Reject” signal that is a rejection signal is transmitted in response to the “IPv6CP: Configure-request” signal. .

  Thereafter, connection processing is performed by the same processing as in FIG. In FIG. 19, since IPv4 is set as the PDP type, processing for connection using IPv4 is performed. That is, for connection processing for IPv4, information such as an IP address according to IPv4 is received from the communication network via MT, and TA 30 outputs an “IPCP: Configure-Ack” signal and IPv4 address to TE2. Thereafter, communication processing by IPv4 is realized.

  In FIG. 21, the processing when the “IPv6CP: Configure-request” signal is received after the timer expires after receiving the “IPCP: Configure-request” signal has been described. You may make it perform the process of. That is, the same processing may be performed even when the order of receiving the “IPCP: Configure-request” signal and the “IPv6CP: Configure-request” signal is switched.

  By such processing, when the “IPv6CP: Configure-request” signal is received after being measured for a predetermined time by the timer in the TA 30, it is possible to return a rejection of the “IPv6CP: Configure-request” signal, and in TE2 Can know in advance that connection cannot be established, and can realize efficient communication processing.

  (About action and effect)

  According to the first embodiment described above, when the TE 2 connects to a predetermined connection destination via the communication network, the communication related function unit 20 of the TE 2 transmits a predetermined communication function (PDPtype) to the communication terminal 3. ) Is used to transmit a connection request signal. When the TA 30 of the communication terminal 3 receives the connection request signal transmitted from the TE 2, the communication function identifying unit 50 in the TA 30 identifies the communication function (PDP type) used in the connection request signal. The TA 30 connects the TE 2 to a predetermined connection destination via a communication network using a communication function (PDP type) corresponding to the identified communication function (PDP type). For this reason, the TA 30 of the communication terminal 3 can identify a communication function (PDP type) that can be used by the communication-related function unit 20 of the TE 2 and connects to a predetermined connection destination using the identified communication function (PDP type). be able to. Even when the application program of TE2 or the communication related function unit 20 is changed, the TA 30 of the communication terminal 3 is predetermined by using the communication function (PDPtype) currently available to the communication related function unit 20 of the TE2. Therefore, TE2 can be reliably connected to the connection destination.

  [Second Embodiment]

  The second embodiment has a communication function for connecting TE to a predetermined connection destination based on the communication function stored in the connection destination information storage unit and the communication function identified by the communication function identification unit. To decide.

  (Overall configuration of communication system in second embodiment)

  FIG. 5 is a diagram showing an overall configuration of a communication system 1A in the second embodiment. As shown in FIG. 5, the communication system 1A connects Terminal Equipment 2 (hereinafter referred to as “TE2”) (corresponding to “program execution unit” in the claims) that executes an application program and TE2 to a communication network. Communication terminal 3A (corresponding to “communication connection unit” in the claims). For example, a PC that executes an application program can be used as the TE2. Further, the communication terminal 3A can use, for example, a data communication card used by connecting to a PC.

  The communication terminal 3A includes a terminal adaptation 30A (hereinafter referred to as “TA30A”), a mobile termination 31 (hereinafter referred to as “MT31”), and a connection destination information storage unit 32. The TA 30A serves as an interface when a connection request is received from the communication-related functional unit 20 of the TE2. In the second embodiment, TA30A is assumed to be a modem type.

  The connection destination information storage unit 32 stores, for each connection destination on the communication network, a communication function (PDP type) set when connecting to the connection destination. For example, as shown in FIG. 6, the connection destination information storage unit 32 includes a connection destination A, a connection destination B, a connection destination C... And a PDP type (IPv4, IPv6, IPv4v6) set when connecting to the connection destination. Is stored.

  The TA 30A includes a communication function identification unit 50 and a correspondence table storage unit 51A. The communication function identifying unit 50 identifies a PDP type (IPv4, IPv6, IPv4v6) as a communication function used for transmitting the connection request signal. The correspondence table storage unit 51A stores, for example, the correspondence table shown in FIG. This correspondence table is based on the PDP type used for transmission of the connection request signal (Configure-request) and the PDP type stored in the connection destination information storage unit 32 when connecting TE2 to a predetermined connection destination. This is for setting the PDP type. For example, when the PDP type corresponding to the predetermined connection destination stored in the connection destination information storage unit 32 is IPv4 and the connection request signal is IPCP, IPv4 is used as the PDP type when connecting TE2 to the predetermined connection destination. Set. If the PDP type corresponding to the predetermined connection destination stored in the connection destination information storage unit 32 is IPv4 and the connection request signal is IPv6CP, “reject” that does not connect TE2 to the predetermined connection destination is set. select.

  In FIG. 5, the same components as those of the communication system 1 in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  (Communication connection processing)

  Next, the flow of processing when TE2 is connected to a predetermined connection destination via a communication network will be described. FIG. 3 is a flowchart showing a flow of processing performed in the communication system 1A when TE2 is connected to a predetermined connection destination. FIG. 4 is a diagram illustrating a flow of signals transmitted and received by each unit of the communication system 1A when the TE 2 is connected to a predetermined connection destination.

  In the second embodiment, the processes in steps S101 to S104 in FIG. 3 are the same as those in the first embodiment, and a description thereof is omitted. Here, only steps S105A and S106A, which are different processes from the first embodiment, will be described.

  In step S <b> 105 </ b> A, the TA 30 </ b> A sets a PDP type for connecting the TE 2 to a predetermined connection destination based on the PDP type identified by the communication function identification unit 50 and the PDP type stored in the connection destination information storage unit 32. . Specifically, in the example illustrated in FIG. 4, it is assumed that the communication-related functional unit 20 of the TE 2 transmits both IPCP and IPv6CP as a connection request signal (Configure-request) to the connection destination B. Based on the received connection request signal, the TA 30A extracts IPv4v6 as the PDP type corresponding to the connection destination B from the data shown in FIG. 6 stored in the connection destination information storage unit 32. Then, the TA 30A uses the correspondence table shown in FIG. 7 to extract IPv4v6 corresponding to the IPCP & IPv6CP as a connection request signal and the IPv4v6 extracted from the data shown in FIG. 6 stored in the connection destination information storage unit 32. The extracted IPv4v6 is set as the PDP type when TE2 is connected to the connection destination B. Step S105A corresponds to a “communication function determination step” in the claims.

  In step S106A, the TA 30A communicates with a predetermined connection destination on the communication network through the MT 31 using the set PDPtype, and connects TE2 and the predetermined connection destination. When the set PDP type is “reject”, connection to a predetermined connection destination by TE2 is not performed. Note that step S106A corresponds to a “connection step” in the claims.

  (About action and effect)

  According to the second embodiment described above, when the TE 2 connects to a predetermined connection destination via the communication network, the communication related function unit 20 of the TE 2 uses a predetermined communication function for the communication terminal 3A. Send the connection request signal that was received. When the TA 30A of the communication terminal 3A receives the connection request signal transmitted from the TE 2, the communication function identifying unit 50 in the TA 30A identifies the communication function (PDP type) used in the connection request signal. The TA 30A connects the TE 2 to a predetermined connection destination based on the communication function (PDP type) stored in the connection destination information storage unit 32 and the communication function identified by the communication function identification unit 50. A communication function (PDP type) is determined. Therefore, the TA 30A can connect the TE 2 to a predetermined connection destination based on the determined communication function (PDP type).

  Thereby, the connection to a predetermined connection destination can be controlled based on the communication function for each connection destination stored in the connection destination information storage unit 32. For example, when there is a connection request to a predetermined connection destination, the communication function to the predetermined connection destination stored in the connection destination information storage unit 32 and the communication function identified by the communication function identification unit 50 are: Even if they are different, communication can be attempted. As a result of the communication attempt, a case where connection is possible is also assumed. In this case, the connection possibility of communication can be improved. Further, when communication is not attempted, the processing can be simplified as much as the connection processing is not performed.

  [Third Embodiment]

  In the third embodiment, a communication function for connecting a TE to a predetermined connection destination is determined based on the communication function identified by the communication function identification unit for each communication network in which the communication terminal is located. .

  (Overall configuration of communication system in the third embodiment)

  FIG. 8 is a diagram illustrating an overall configuration of a communication system 1B according to the third embodiment. As shown in FIG. 8, the communication system 1B connects Terminal Equipment 2 (hereinafter referred to as “TE2”) (corresponding to “program execution unit” in the claims) that executes an application program and TE2 to a communication network. Communication terminal 3B (corresponding to “communication connection unit” in the claims). For example, a PC that executes an application program can be used as the TE2. The communication terminal 3B can use, for example, a data communication card used by connecting to a PC.

  The communication terminal 3B includes a terminal adaptation 30B (hereinafter referred to as “TA30B”), a mobile termination 31 (hereinafter referred to as “MT31”), and a location information acquisition unit 33. The TA 30B serves as an interface when a connection request is received from the communication-related functional unit 20 of the TE2. In the third embodiment, the TA 30B is assumed to be a modem type.

  The location information acquisition unit 33 acquires information related to the communication network in which the communication terminal 3B is located. Note that the communication terminal 3B performs wireless communication through a communication network. Moreover, the acquisition method of the information regarding the communication network in which it is located can be acquired by an appropriate method, for example, based on the frequency used during communication.

  The TA 30B includes a communication function identification unit 50 and a correspondence table storage unit 51B. The communication function identifying unit 50 identifies a PDP type (IPv4, IPv6, IPv4v6) as a communication function used for transmitting the connection request signal. The correspondence table storage unit 51B stores, for example, the correspondence table shown in FIG. This correspondence table connects, for each communication network (communication network A, communication network B...), The PDP type used for transmission of the connection request signal (Configure-request) and TE2 to a predetermined connection destination on the communication network. A correspondence table with the PDP type set when performing is stored.

  In FIG. 8, the same components as those of the communication system 1 in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  (Communication connection processing)

  Next, the flow of processing when TE2 is connected to a predetermined connection destination via a communication network will be described. FIG. 10 is a flowchart showing a flow of processing performed in the communication system 1B when connecting TE2 to a predetermined connection destination. FIG. 4 is a diagram illustrating a flow of signals transmitted and received by each unit of the communication system 1B when the TE 2 is connected to a predetermined connection destination.

  In the third embodiment, the processes in steps S201 to S204 in FIG. 10 are the same as those in steps S101 to S104 in FIG. 3 described in the first embodiment, and description thereof is omitted. Here, only steps S205 to S207, which are processes different from those of the first embodiment, will be described.

  In step S <b> 205, the TA 30 </ b> B acquires information related to the communication network in which the communication terminal 3 </ b> B is currently located through the area information acquisition unit 33. Note that step S205 corresponds to the “located area acquisition step” in the claims.

  In step S206, the TA 30B determines in FIG. 9 based on the PDP type identified by the communication function identifying unit 50 and the information related to the communication network in which the communication terminal 3B is acquired, which is acquired by the area information acquiring unit 33. The PDP type for connecting TE2 to a predetermined connection destination is set using the correspondence table shown. Note that step S206 corresponds to a “communication function determination step” in the claims.

  Specifically, in the example illustrated in FIG. 4, it is assumed that the communication-related functional unit 20 of the TE 2 transmits both IPCP and IPv6CP as a connection request signal (Configure-request) to a predetermined connection destination. In addition, it is assumed that information about the communication network A is acquired by the location information acquisition unit 33. In this case, based on the correspondence table for the communication network A shown in FIG. 9, the PDP type to be set corresponding to the connection request signal: “IPCP and IPv6CP”: “IPv4v6” is set when TE2 is connected to a predetermined connection destination. Set as PDPtype.

  In step S207, the TA 30B communicates with a predetermined connection destination on the communication network through the MT 31 using the set PDP type, and connects TE2 and the predetermined connection destination. Note that step S207 corresponds to a “connection step” in the claims.

  (About action and effect)

  According to the third embodiment described above, when the TE 2 connects to a predetermined connection destination via the communication network, the communication related function unit 20 of the TE 2 uses a predetermined communication function for the communication terminal 3B. Send the connection request signal that was received. When the TA 30B of the communication terminal 3B receives the connection request signal transmitted from the TE 2, the communication function identifying unit 50 in the TA 30B identifies the communication function (PDP type) used in the connection request signal. Further, the TA 30 </ b> B acquires information regarding the communication network in which the communication terminal 3 </ b> B is currently located through the area information acquisition unit 33. Further, the TA 30B is for connecting the TE 2 to a predetermined connection destination based on the communication function (PDP type) identified by the communication function identifying unit 50 and information on the communication network in which the communication terminal 3B is located. A communication function (PDP type) is determined. Therefore, the TA 30B can connect the TE 2 to a predetermined connection destination based on the determined communication function. Thereby, even if the communication function (PDP type) that can be used is different for each communication network in which the communication terminal 3B is located, the TE 2 can be reliably connected to the connection destination.

  [Fourth Embodiment]

  In the fourth embodiment, a communication function for connecting a TE to a predetermined connection destination is determined based on the communication mode of the communication network in which the communication terminal is located and the communication function identified by the communication function identification unit. To do.

  (Overall configuration of communication system in fourth embodiment)

  FIG. 11 is a diagram illustrating an overall configuration of a communication system 1C according to the fourth embodiment. As shown in FIG. 11, the communication system 1C connects Terminal Equipment 2 (hereinafter referred to as “TE2”) (corresponding to “program execution unit” in the claims) that executes an application program and TE2 to a communication network. Communication terminal 3C (corresponding to “communication connection unit” in the claims). For example, a PC that executes an application program can be used as the TE2. The communication terminal 3C can use, for example, a data communication card used by connecting to a PC.

  The communication terminal 3 </ b> C includes a terminal adaptation 30 </ b> C (hereinafter referred to as “TA30C”), a mobile termination 31 (hereinafter referred to as “MT31”), and a communication mode information acquisition unit 34. The TA 30C serves as an interface when a connection request is received from the communication-related functional unit 20 of the TE 2. In the fourth embodiment, TA30C is assumed to be a modem type.

  The communication mode information acquisition part 34 acquires the information regarding the communication mode of the communication network in which the communication terminal 3C exists. Note that the communication terminal 3C performs wireless communication through a communication network. In addition, the acquisition method of information regarding the communication mode of the communication network in which the user is located can be acquired by an appropriate method such as obtaining based on the communication control method.

  The TA 30C includes a communication function identification unit 50 and a correspondence table storage unit 51C. The communication function identifying unit 50 identifies a PDP type (IPv4, IPv6, IPv4v6) as a communication function used for transmitting the connection request signal. The correspondence table storage unit 51C stores, for example, the correspondence table shown in FIG. This correspondence table connects the PDP type used for transmission of the connection request signal (Configure-request) and TE2 to a predetermined connection destination on the communication network for each communication mode (communication mode A, communication mode B...). A correspondence table with the PDP type set at the time is stored.

  In FIG. 11, the same components as those of the communication system 1 in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  (Communication connection processing)

  Next, the flow of processing when TE2 is connected to a predetermined connection destination via a communication network will be described. FIG. 13 is a flowchart showing a flow of processing performed in the communication system 1C when TE2 is connected to a predetermined connection destination. FIG. 4 is a diagram illustrating a flow of signals transmitted and received in each unit of the communication system 1C when the TE 2 is connected to a predetermined connection destination.

  In the fourth embodiment, the processes in steps S301 to S304 in FIG. 13 are the same as those in steps S101 to S104 in FIG. 3 described in the first embodiment, and description thereof is omitted. Here, only steps S305 to S307, which are processing different from the first embodiment, will be described.

  In step S305, the TA 30C acquires information on the communication mode of the communication network in which the communication terminal 3C is currently located from the communication mode information acquisition unit 34. Note that step S305 corresponds to a “communication mode information acquisition step” in the claims.

  In step S306, the TA 30C, based on the PDP type identified by the communication function identifying unit 50 and the information regarding the communication mode of the communication network in which the communication terminal 3B is acquired, acquired by the communication mode information acquiring unit 34, The PDP type used when connecting TE2 to a predetermined connection destination is set using the correspondence table shown in FIG. Note that step S306 corresponds to a “communication function determination step” in the claims.

  Specifically, in the example illustrated in FIG. 4, the communication-related functional unit 20 of the TE 2 transmits both IPCP and IPv6CP as a connection request signal (Configure-request) to a predetermined connection destination. In addition, it is assumed that the communication mode information acquisition unit 34 has acquired information about the communication mode A. In this case, based on the correspondence table for the communication mode A shown in FIG. 12, the connection request signal: “IPCP and IPv6CP” corresponding to the PDP type to be set: “IPv4v6” when connecting the TE2 to the predetermined connection destination Set as PDPtype.

  In step S307, the TA 30C communicates with a predetermined connection destination on the communication network through the MT 31 using the set PDPtype, and connects TE2 and the predetermined connection destination. Note that step S307 corresponds to a “connection step” in the claims.

  (About action and effect)

  According to the fourth embodiment described above, when the TE 2 connects to a predetermined connection destination via the communication network, the communication related function unit 20 of the TE 2 uses a predetermined communication function for the communication terminal 3C. Send the connection request signal that was received. When the TA 30C of the communication terminal 3C receives the connection request signal transmitted from the TE 2, the communication function identifying unit 50 in the TA 30C identifies the communication function (PDP type) used in the connection request signal. Further, the TA 30C acquires information on the communication mode of the communication network in which the communication terminal 3C is currently located through the communication mode information acquisition unit 34. The TA 30C connects the TE 2 to a predetermined connection destination based on the communication function (PDP type) identified by the communication function identifying unit 50 and the communication mode information of the communication network in which the communication terminal 3C is located. Communication function (PDP type) is determined. For this reason, TA30C can connect TE2 to a predetermined connection destination based on the determined communication function. Thereby, even if the communication function (PDP type) that can be used differs for each communication mode of the communication network in which the communication terminal 3C is located, the TE 2 can be reliably connected to the connection destination.

  [Fifth Embodiment]

  In the fifth embodiment, a communication function for connecting a TE to a predetermined connection destination is determined based on the communication terminal communication mode used by the communication terminal and the communication function identified by the communication function identification unit. To do. The communication terminal communication mode used by the communication terminal includes, for example, LTE single, UMTS single, LTE / UMTS dual, and the like.

  (Overall configuration of communication system in the fifth embodiment)

  FIG. 14 is a diagram illustrating an overall configuration of a communication system 1D according to the fifth embodiment. As shown in FIG. 14, the communication system 1D connects Terminal Equipment 2 (hereinafter referred to as “TE2”) (corresponding to “program execution unit” in the claims) that executes an application program and TE2 to a communication network. Communication terminal 3D (corresponding to “communication connection unit” in the claims). For example, a PC that executes an application program can be used as the TE2. The communication terminal 3D can use, for example, a data communication card used by connecting to a PC.

  The communication terminal 3D includes a terminal adaptation 30D (hereinafter referred to as “TA30D”), a mobile termination 31 (hereinafter referred to as “MT31”), and a communication terminal communication mode acquisition unit 35. The TA 30 </ b> D serves as an interface when there is a connection request from the communication-related functional unit 20 of the TE 2. In the fifth embodiment, the TA 30D is a modem type.

  The communication terminal communication mode acquisition unit 35 acquires information related to the communication mode that the communication terminal 3D is currently using in communication. Note that the communication terminal 3D performs wireless communication through a communication network. Moreover, the acquisition method of the information regarding the communication mode currently used can be acquired by appropriate methods, such as acquiring information from TA30D, MT31, etc. which are performing communication.

  The TA 30D includes a communication function identification unit 50 and a correspondence table storage unit 51D. The communication function identifying unit 50 identifies a PDP type (IPv4, IPv6, IPv4v6) as a communication function used for transmitting the connection request signal. The correspondence table storage unit 51D stores, for example, the correspondence table shown in FIG. This correspondence table shows the PDP type used for transmission of the connection request signal (Configure-request) and TE2 for each communication terminal communication mode (communication terminal communication mode A, communication terminal communication mode B...) And a predetermined value on the communication network. A correspondence table with PDP types set when connecting to the connection destination is stored.

  In FIG. 14, the same components as those of the communication system 1 in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  (Communication connection processing)

  Next, the flow of processing when TE2 is connected to a predetermined connection destination via a communication network will be described. FIG. 16 is a flowchart showing a flow of processing performed in the communication system 1D when connecting TE2 to a predetermined connection destination. FIG. 4 is a diagram illustrating a flow of signals transmitted and received by each unit of the communication system 1D when the TE 2 is connected to a predetermined connection destination.

  In the fifth embodiment, the processes in steps S401 to S404 in FIG. 16 are the same as those in steps S101 to S104 in FIG. 3 described in the first embodiment, and a description thereof is omitted. Here, only steps S405 to S407, which are different processes from the first embodiment, will be described.

  In step S <b> 405, the TA 30 </ b> D acquires information related to the communication mode currently used by the communication terminal 3 </ b> D from the communication terminal communication mode acquisition unit 35. Step S405 corresponds to the “connection unit communication mode information acquisition step” in the claims.

  In step S406, the TA 30D determines that the PDP type identified by the communication function identifying unit 50 and the information regarding the communication mode used by the communication terminal 3D acquired by the communication terminal communication mode acquiring unit 35 are shown in FIG. The PDP type for connecting TE2 to a predetermined connection destination is set using the correspondence table shown. Note that step S406 corresponds to a “communication function determination step” in the claims.

  Specifically, in the example illustrated in FIG. 4, the communication-related functional unit 20 of the TE 2 transmits both IPCP and IPv6CP as a connection request signal (Configure-request) to a predetermined connection destination. In addition, it is assumed that the communication terminal communication mode acquisition unit 35 has acquired information about the communication terminal communication mode A. In this case, based on the correspondence table for the communication terminal communication mode A shown in FIG. 15, the connection request signal: “IPCP and IPv6CP” corresponding to the set PDP type: “IPv4v6” is connected to the predetermined connection destination TE2. Set as the PDPtype at the time.

  In step S407, the TA 30D communicates with a predetermined connection destination on the communication network through the MT 31 using the set PDPtype, and connects TE2 and the predetermined connection destination. Step S407 corresponds to a “connection step” in the claims.

  (About action and effect)

  According to the fifth embodiment described above, when the TE 2 connects to a predetermined connection destination via the communication network, the communication related function unit 20 of the TE 2 uses a predetermined communication function for the communication terminal 3D. Send the connection request signal that was received. When the TA 30D of the communication terminal 3D receives the connection request signal transmitted from the TE 2, the communication function identifying unit 50 in the TA 30D identifies the communication function (PDP type) used in the connection request signal. Moreover, TA30D acquires the information regarding the communication mode which communication terminal 3D is using from the communication terminal communication mode acquisition part 35. FIG. The TA 30D connects the TE 2 to a predetermined connection destination based on the communication function (PDP type) identified by the communication function identification unit 50 and information on the communication mode currently used by the communication terminal 3D. A communication function (PDP type) is determined. For this reason, TA30D can connect TE2 to a predetermined connection destination based on the determined communication function. Thereby, TE2 can be reliably connected to the connection destination according to the communication mode used by the communication terminal 3D.

  In addition, this invention is not limited to each embodiment mentioned above.

  For example, in each of the embodiments described above, each TA is a modem type, but is not limited thereto, and may be a LAN type, for example. In this case, as shown in FIG. 17, the TE transmits a “DHCP request” signal and a “RouterSolicication” signal to the TA as connection request signals. The TA can also set the PDP type based on the received “DHCP request” signal and the “Router Solicication” signal.

  In each of the above embodiments, the communication-related functional unit 20 and the communication terminals 3 and 3A to 3D have been described as individual devices (PC and communication card, etc.). For example, a communication system 1E illustrated in FIG. In addition, TE2, TA30 and MT31 may be combined in one apparatus. Examples of such a communication system 1E include a mobile device.

  Moreover, you may make it select a communication function based on the conditions described in each embodiment combining 2 or more of the 1st-5th embodiment mentioned above. In this case, it is also possible to select a communication function by prioritizing each condition.

  DESCRIPTION OF SYMBOLS 1,1A-1E ... Communication system, 2 ... TE, 3, 3A-D ... Communication terminal, 20 ... Communication related functional part, 30, 30A-30D ... TA, 31 ... MT, 32 ... Connection destination information storage part, 33 ... Area information acquisition unit, 34 ... Communication mode information acquisition unit, 35 ... Communication terminal communication mode acquisition unit, 50 ... Communication function identification unit, 51, 51A to 51D ... Correspondence table storage unit.

Claims (8)

A communication function selection method in a communication system comprising: a program execution unit for executing an application program; and a communication connection unit for connecting the program execution unit to a connection destination via a communication network,
A connection request step in which the program execution unit makes a plurality of connection requests indicating different communication functions, which are connection requests to the predetermined connection destination, to the communication connection unit;
The communication connection unit receives the plurality of connection requests made by the program execution unit; and
A communication function identifying step in which the communication connection unit identifies the different communication functions used in the plurality of connection requests received in the receiving step;
Connection step in which the communication connection unit connects the program execution unit to the predetermined connection destination using one communication function type signal set based on the different communication function identified in the communication function identification step. When,
A communication function selection method comprising: The communication connection unit
A connection destination information storage unit that stores information on the communication function used for connection to the connection destination for each connection destination;
The communication function selection method is:
Based on the communication function stored in the connection destination information storage unit and the communication function identified in the communication function identification step, the communication connection unit moves the program execution unit to the predetermined connection destination. A communication function determining step for determining the communication function to connect to
Further comprising
2. The connection step, wherein the communication connection unit connects the program execution unit to the predetermined connection destination using the communication function determined in the communication function determination step. The communication function selection method described. The communication function selection method is:
The communication connection unit acquires information related to the communication network in which the communication connection unit is located;
The communication connection unit is based on the communication function identified in the communication function identification step, and information on the communication network in which the communication connection unit acquired in the location information acquisition step exists. A communication function determining step for determining the communication function for connecting the program execution unit to the predetermined connection destination;
Further comprising
2. The connection step, wherein the communication connection unit connects the program execution unit to the predetermined connection destination using the communication function determined in the communication function determination step. The communication function selection method described. The communication function selection method is:
A communication mode information acquisition step in which the communication connection unit acquires information related to a communication mode of the communication network in which the communication connection unit is located;
The communication connection unit connects the program execution unit to the predetermined connection based on the communication function identified in the communication function identification step and information on the communication mode acquired in the communication mode information acquisition step. A communication function determining step for determining the communication function for connecting to a destination;
Further comprising
2. The connection step, wherein the communication connection unit connects the program execution unit to the predetermined connection destination using the communication function determined in the communication function determination step. The communication function selection method described. The communication function selection method is:
The communication connection unit acquires a connection unit communication mode information acquisition step for acquiring information about a communication mode used by the communication connection unit;
The communication connection unit is based on the communication function identified in the communication function identification step, and information on the communication mode used by the communication connection unit acquired in the connection unit communication mode information acquisition step, A communication function determining step for determining the communication function for connecting the program execution unit to the predetermined connection destination;
Further comprising
2. The connection step, wherein the communication connection unit connects the program execution unit to the predetermined connection destination using the communication function determined in the communication function determination step. The communication function selection method described. A communication function selection method in a communication system comprising: a program execution unit for executing an application program; and a communication connection unit for connecting the program execution unit to a connection destination via a communication network,
A connection request step in which the program execution unit makes a connection request to the predetermined connection destination using a predetermined communication function with respect to the communication connection unit;
A receiving step in which the communication connection unit receives the connection request made by the program execution unit;
A communication function identification step for identifying the communication function used in the connection request received by the communication connection unit in the reception step;
A connection step in which the communication connection unit connects the program execution unit to the predetermined connection destination using the communication function corresponding to the communication function identified in the communication function identification step;
When a connection request is received by the receiving step, a timer step for performing a predetermined time counting process,
A determination step of determining whether or not another connection request has been received in the reception step while the time measurement process is being performed by the timer step ;
With
In the determining step, when it is determined that there is another connection request, the communication function identifying step identifies the communication function used in the other connection request in addition to the connection request. Communication function selection method.   The communication function according to claim 6, wherein if it is determined that there is no other connection request in the determination step, the communication function used in the connection request is identified in the communication function identification step. Selection method.   The method further comprises a reply step of returning a rejection of the other connection request when receiving another connection request in the receiving step after the timer step counts a predetermined time. The communication function selection method according to claim 6 or 7.

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