Contract system and computer program

Abstract

To provide a technique that allows a contract for performing data communication to be made.SOLUTION: A contract system includes: a communication terminal that is connected to a communication line provided by a telecommunication carrier and announces that sharing of the communication line is likely to be permitted; and a wireless communication terminal that can request the announcing communication terminal to permit sharing of the communication line, using wireless communication. The communication terminal determines whether to permit the wireless communication terminal to share the communication line. When permitted to share the communication line by the communication terminal, the wireless communication terminal uses the communication line via the communication terminal.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a contract system and a computer program. [Background technology]

[0002] In recent years, communication terminals are required to provide faster and more stable data communication. When the maximum communication speed is limited to a speed slower than normal or in an environment without public wireless LAN, data communication cannot be performed satisfactorily. Therefore, a technique is known in which a subscriber uses a communication terminal to make a contract for communication services with a telecommunications carrier. By making a contract for communication services with a telecommunications carrier, the subscriber can perform satisfactory data communication using the communication terminal. Patent Document 1 describes a technique in which a new subscriber makes a new contract using a communication terminal that has already contracted with a contracting institution. With this technique, for example, a new subscriber can newly subscribe another communication terminal to a communication service using a communication terminal that has already contracted with a telecommunications carrier, which is a contracting institution. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-216055 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology described in Patent Document 1 requires borrowing someone else's communication terminal, and does not take into account the case where there are no acquaintances nearby. If there are no acquaintances nearby, the technology described in Patent Document 1 may not be able to make a new contract with a telecommunications carrier, and data communication may not be performed satisfactorily. Therefore, there has been a demand for other technology that allows a contract for data communication to be made. [Means for solving the problem]

[0005] The present disclosure has been made to solve the above-mentioned problems, and can be realized in the following forms. According to one embodiment of the present disclosure, a contract system is provided that automatically processes a contract so that a wireless communication terminal can use a communication line via the communication terminal. The contract system includes a communication terminal that is connected to the communication line provided by a telecommunications carrier and transmits a signal indicating that sharing of the communication line may be permitted, and a wireless communication terminal that can request permission to share the communication line from the transmitting communication terminal via wireless communication. The communication terminal determines whether or not to permit sharing of the communication line of the wireless communication terminal, and when the wireless communication terminal permits sharing of the communication line, restricts the end of sharing of the communication line until the wireless communication terminal terminates use of the communication line. When the wireless communication terminal permits sharing of the communication line, the wireless communication terminal uses the communication line via the communication terminal.

[0006] (1) According to one embodiment of the present disclosure, a contract system is provided. The contract system includes a communication terminal that is connected to a communication line provided by a telecommunications carrier and transmits a signal indicating that sharing of the communication line may be permitted, and a wireless communication terminal that can request permission to share the communication line from the communication terminal that is transmitting the signal via wireless communication. The communication terminal determines whether or not to permit sharing of the communication line by the wireless communication terminal. When the communication terminal is permitted to share the communication line, the wireless communication terminal uses the communication line via the communication terminal. In this manner, the wireless communication terminal can request permission to share the communication line, and therefore can enter into a contract for data communication even in an environment where the maximum communication speed is limited or where there is no public wireless LAN. (2) In the contract system of the above type, the wireless communication terminal may request permission to share the communication line from a plurality of the communication terminals, and may use the communication line via the communication terminal that is the first of the plurality of communication terminals that satisfies predetermined conditions to permit sharing of the communication line. In this manner, the wireless communication terminal can request permission to share the communication line with a plurality of communication terminals, thereby making it possible to make a contract for more reliable data communication. (3) In the contract system of the above type, the wireless communication terminal may transmit information about the wireless communication terminal to the communication terminal when making the request, and the communication terminal may allow the wireless communication terminal to share the communication line if the wireless communication terminal satisfies predetermined conditions based on the information about the wireless communication terminal. In this manner, for example, the communication terminal can automatically permit sharing of the communication line to a wireless communication terminal that has permitted sharing of the communication line in the past or a wireless communication terminal that has used a communication volume less than a predetermined volume in the past. Therefore, a wireless communication terminal that satisfies the conditions can enter into a contract for more reliable data communication. (4) In the contract system of the above aspect, the wireless communication terminal may provide a reward to the communication terminal that has permitted sharing of the communication line. In this embodiment, the communication terminal can receive a reward, which can promote permission to share the communication line, making it easier for the wireless communication terminal to use the communication line. (5) In the contract system of the above aspect, the remuneration may be lower than an amount paid by the communication terminal to the telecommunications carrier for use of the communication line. In this manner, a wireless communication terminal user can use a communication line at a lower price than if he or she were to make a direct contract with a telecommunications carrier that provides the communication line. (6) In the contract system of the above form, the wireless communication terminal may request permission to share the communication line from a plurality of the communication terminals, and may use the communication line via the communication terminal among the plurality of communication terminals that offers the cheapest remuneration. In this manner, wireless communication terminal users can use the communication line at a low cost. (7) In the contract system of the above type, the wireless communication terminal may present at least one of the communication strengths and communication speeds of a plurality of communication terminals and the remuneration to a user of the wireless communication terminal, and prompt the user to select a communication terminal to be used for utilizing the communication line. In this embodiment, the user can use the presented information to select a communication terminal to be used for utilizing the communication line. (8) In the contract system of the above type, the wireless communication terminal may request permission to share the communication line from multiple communication terminals, and use the communication line through a communication terminal among the multiple communication terminals having the strongest communication strength. In this manner, a wireless communication terminal user can perform stable data communication. (9) In the contract system of the above type, the wireless communication terminal requests permission to share the communication line from multiple communication terminals, and uses the communication line through a communication terminal among the multiple communication terminals that has the highest communication speed. In this manner, a wireless communication terminal user can perform data communication at a high communication speed. (10) In the above-described contract system, the communication terminal may connect to the communication line via a repeater capable of wireless communication, and when the wireless communication terminal is permitted to share the communication line, connection information for connecting to the repeater may be transmitted to the wireless communication terminal, and the wireless communication terminal may connect to the communication line via the repeater using the connection information. With this configuration, even if the communication terminal is performing wired communication, the wireless communication terminal can use the communication line via the repeater.

[0007] The present disclosure can be realized in various forms, for example, in the form of a method for concluding a contract. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a contract system. [Diagram 2] 11 is a sequence diagram showing an example of a process in which a wireless communication terminal concludes a contract with another communication terminal; FIG. [Diagram 3] 13 is an example of a screen displayed by the wireless communication terminal at the event E110. [Figure 4] 13 is an example of a screen displayed by the communication terminal at the event E120. [Diagram 5] FIG. 11 is a sequence diagram showing an example of a process in which a wireless communication terminal concludes a contract with another communication terminal in the second embodiment. [Figure 6] FIG. 13 is a sequence diagram showing an example of a process in which a wireless communication terminal concludes a contract with another communication terminal in the third embodiment. [Figure 7] FIG. 13 is a diagram showing a schematic configuration of a contract system according to a fifth embodiment. [Figure 8] 13 is an example of a map displayed as a screen in another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A. First embodiment: 1 is a diagram showing a schematic configuration of a contract system 100 according to an embodiment of the present disclosure. The contract system 100 includes a wireless communication terminal 10 and a communication terminal 20 connected to a communication line INT provided by a telecommunications carrier. The contract system 100 is a system that concludes a contract with the communication terminal 20 so that the wireless communication terminal 10 can use the communication line INT via the communication terminal 20.

[0010] The wireless communication terminal 10 is a terminal capable of wireless communication with the communication terminal 20. In this embodiment, the wireless communication terminal 10 is a smartphone. Note that the wireless communication terminal 10 is not limited to a smartphone, and may be, for example, a personal computer, a tablet PC, or a car navigation device. The wireless communication terminal 10 can use, for example, Wi-Fi (registered trademark) or Bluetooth (registered trademark) as wireless communication.

[0011] The wireless communication terminal 10 has a functional unit 11. The functional unit 11 is composed of a microcomputer constituted by a central processing unit (CPU), RAM, and ROM, and executes a process of concluding a contract with the communication terminal 20, which will be described later, by the microcomputer executing a computer program installed in advance.

[0012] In this embodiment, the communication terminal 20 is a smartphone equipped with a tethering function. Note that the communication terminal 20 is not limited to a smartphone, and may be, for example, a personal computer or a tablet PC. The communication terminal 20 transmits a message indicating that there is a possibility of allowing sharing of the communication line INT. The communication terminal 20 may also transmit information about the communication terminal 20. The information about the communication terminal 20 is, for example, information such as the name of the communication terminal 20, an available time that is a time when sharing of the communication line INT is permitted, and a communication volume that is available per a predetermined unit time.

[0013] The communication terminal 20 has a functional unit 21. The functional unit 21 is composed of a microcomputer constituted by a central processing unit (CPU), RAM, and ROM, and executes a process of concluding a contract with the wireless communication terminal 10, which will be described later, by the microcomputer executing a computer program installed in advance.

[0014] FIG. 2 is a sequence diagram showing an example of a process in which the wireless communication terminal 10 concludes a contract with the communication terminal 20. As shown in FIG.

[0015] First, in an event E100, the wireless communication terminal 10 searches the vicinity of the wireless communication terminal 10 and detects the communication terminal 20. More specifically, the wireless communication terminal 10 receives a beacon transmitted by the surrounding communication terminal 20 via wireless communication, and detects the surrounding communication terminal 20.

[0016] Next, in event E110, the wireless communication terminal 10 determines, as the request destination, the communication terminal 20 that has transmitted the information that there is a possibility of permission to share the communication line INT detected in event E100. The wireless communication terminal 10 requests permission to share the communication line INT to the communication terminal 20 determined as the request destination, by wireless communication. The wireless communication terminal 10 also transmits information about the wireless communication terminal 10. The information about the wireless communication terminal 10 is, for example, information such as the user name of the wireless communication terminal 10, the scheduled date and time of use, and the scheduled communication volume to be used. In this embodiment, "transmission" refers to transmitting information to the specified other device directly or indirectly via another device.

[0017] 3 is an example of a screen S1 displayed by the wireless communication terminal 10 in the event E110. The wireless communication terminal 10 displays the name of the communication terminal 20 detected in the event E100, the signal strength, the available time, and a button b1 for selecting whether or not to request permission to share the communication line INT, and a button b2 for executing the permission request. When multiple communication terminals are detected in the event E100, the wireless communication terminal 10 displays the detected communication terminals in a list.

[0018] Next, in an event E120 (see FIG. 2), the communication terminal 20 determines whether or not to permit sharing of the communication line INT of the wireless communication terminal 10.

[0019] 4 is an example of a screen S2 displayed by the communication terminal 20 in the event E120. The communication terminal 20 displays buttons b3 and b4 that allow the user to input the name of the user of the wireless communication terminal 10 that has requested sharing of the communication line INT, the scheduled date and time of use, the scheduled communication volume, and whether or not to permit sharing of the communication line INT of the wireless communication terminal 10. When the button b3 is pressed, the communication terminal 20 transmits permission to share the communication line INT to the wireless communication terminal 10. On the other hand, when the button b4 is pressed, the communication terminal 20 transmits a non-permission to share the communication line INT to the wireless communication terminal 10. The following describes an example in which the communication terminal 20 permits sharing of the communication line INT of the wireless communication terminal 10. In this embodiment, the communication terminal 20 operates as an access point to permit sharing of the communication line INT to the wireless communication terminal 10.

[0020] Next, the wireless communication terminal 10 determines a sharing destination in event E130 (see FIG. 2). The wireless communication terminal 10 notifies the communication terminal 20 that it has been determined as the sharing destination. At this point, a contract is concluded between the wireless communication terminal 10 and the communication terminal 20. The communication terminal 20, which has received the notification that the sharing destination has been determined, transmits to the wireless communication terminal 10 information for connecting the communication terminal 20 to the communication line INT as an access point. The "information for connection" is information including, for example, a password required for a Wi-Fi connection. It is preferable that this information is encrypted. The password required for a Wi-Fi connection may be a one-time password. The wireless communication terminal 10 uses the received information for connection via the communication terminal 20 to utilize the communication line INT.

[0021] According to the contract system 100 of the present embodiment described above, the wireless communication terminal 10 can request permission to share the communication line INT from the communication terminal 20. Therefore, even if the maximum communication speed is limited or in an environment without a public wireless LAN, a contract for data communication can be made.

[0022] B. Second embodiment: The contract system 100 in the second embodiment differs from the first embodiment in that the wireless communication terminal 10 grants a reward to the communication terminal 20. Since the configuration of the contract system 100 in the second embodiment is the same as the configuration of the contract system 100 in the first embodiment, a description of the configuration of the contract system 100 will be omitted.

[0023] 5 is a sequence diagram showing an example of a process in which the wireless communication terminal 10 concludes a contract with the communication terminal 20 in the second embodiment. The wireless communication terminal 10 grants a reward to the communication terminal 20 in event E140. The reward is, for example, money or virtual currency. The reward may be fixed, or may be determined according to the amount of communication in communication performed via the communication terminal 20. In addition, the contract system 100 may determine the reward, the wireless communication terminal 10 may determine the reward, or the communication terminal 20 may determine the reward.

[0024] In this embodiment, the remuneration is money, and the wireless communication terminal 10 grants the remuneration when the use of the communication line INT via the communication terminal 20 is completed. The amount of the remuneration is determined according to the amount of communication in the communication performed via the communication terminal 20. The amount of the remuneration is preferably lower than the amount that the wireless communication terminal 10 would pay if it were to directly contract with the provider of the communication line INT. In this embodiment, the wireless communication terminal 10 grants the remuneration directly to the communication terminal 20. The wireless communication terminal 10 transfers the remuneration to an account designated by the communication terminal 20, for example.

[0025] According to the contract system 100 of the present embodiment described above, the communication terminal 20 can receive a reward, which can promote permission to share the communication line INT. Therefore, the wireless communication terminal 10 can more easily use the communication line INT.

[0026] In addition, since the amount of the remuneration is lower than the amount that the wireless communication terminal 10 would pay if it were to make a direct contract with the provider of the communication line INT, the user of the wireless communication terminal 10 can use the communication line INT at a lower price than if he or she were to make a direct contract with the provider of the communication line INT.

[0027] C. Third embodiment: 6 is a sequence diagram showing an example of a process in which the wireless communication terminal 10 concludes a contract with the communication terminal 20 in the third embodiment. The contract system 100 in the third embodiment differs from the contract system 100 in the second embodiment in that the wireless communication terminal 10 determines, in the event E130, a communication terminal 20 that satisfies a predetermined condition as a sharing destination, and other configurations are the same as those in the second embodiment.

[0028] In this embodiment, in an event E100, the wireless communication terminal 10 detects the communication terminal 20 and another communication terminal 30. In an event E110, the wireless communication terminal 10 transmits a communication sharing request to all communication terminals 20, 30 detected in the event E100. In an event E120, the communication terminals 20, 30 also transmit information used for determining whether the wireless communication terminal 10 satisfies a sharer determination condition described below.

[0029] In this embodiment, the wireless communication terminal 10 determines, in the event E130, a communication terminal that satisfies a predetermined sharer determination condition as a sharer. The wireless communication terminal 10 determines whether each communication terminal satisfies the sharer determination condition based on information received from the communication terminals 20 and 30. The wireless communication terminal 10 can adopt, as the sharer determination condition, one or more of the following conditions, for example:

[0030] <Sharing destination determination condition 1> It must be the first device you allowed. <Sharing destination determination condition 2> The device has the highest communication speed. <Sharing destination determination condition 3> The device with the strongest communication strength. <Sharing destination determination condition 4> It must be the device for which the most contracts have been signed in the past. <Sharing destination determination condition 5> It is the device with the lowest communication costs. <Sharing destination determination condition 6> The device with the highest rating.

[0031] The "first permitted terminal" in the above-mentioned share destination determination condition 1 is the terminal that transmitted the sharing permission that the wireless communication terminal 10 received first.

[0032] The "cost of communication" in the above-mentioned sharer determination condition 5 is the remuneration that the wireless communication terminal 10 gives to the communication terminal 20. In other words, the terminal that satisfies this condition is the terminal with the cheapest remuneration.

[0033] The evaluation value in the above-mentioned sharing destination determination condition 6 is an evaluation value that is assigned according to a predetermined condition. The predetermined condition is, for example, a condition that a higher evaluation value is assigned if communication was stable when a contract was previously concluded than if communication was unstable. In addition, at the end of communication, the user of the wireless communication terminal 10 may assign an evaluation value according to the degree of satisfaction.

[0034] In addition, the above-mentioned shared party determination conditions 1 to 6 and other conditions can be appropriately combined to set the shared party determination condition. In this embodiment, the wireless communication terminal 10 employs the above-mentioned shared party determination condition 5.

[0035] According to the contract system 100 of the present embodiment described above, the wireless communication terminal 10 can request permission to share the communication line INT from the multiple communication terminals 20. This makes it possible to make a contract for more reliable data communication.

[0036] In addition, the condition for determining the sharer is that the terminal with the lowest remuneration should be selected, so that the user of the wireless communication terminal 10 can use the communication line INT at a low cost.

[0037] D. Fourth embodiment: The contract system 100 in the third embodiment differs from the contract system 100 in the second embodiment in that the communication terminal 20 automatically permits a wireless communication terminal 10 that satisfies predetermined conditions to share the communication line INT during event E120 (see Figure 5), but other configurations are the same as those of the second embodiment.

[0038] In this embodiment, the communication terminal 20 determines whether the wireless communication terminal 10 that has requested permission to share the communication line INT in the event E120 satisfies a predetermined permission condition. The communication terminal 20 determines whether the wireless communication terminal 10 satisfies the permission condition based on information about the wireless communication terminal 10 received from the wireless communication terminal 10. If the wireless communication terminal 10 satisfies the permission condition, the communication terminal 20 automatically permits the wireless communication terminal 10 to share the communication line INT. On the other hand, if the wireless communication terminal 10 does not satisfy the permission condition, a screen S2 (see FIG. 4) is displayed to allow the user to select whether to permit or not. The communication terminal 20 can adopt, for example, one or more of the following conditions as the permission condition.

[0039] <Permission Condition 1> The number of times that a contract has been approved in the past is greater than or equal to the threshold. <Permission Condition 2> The scheduled date and time of use of the wireless communication terminal 10 is within a predetermined period. <Permission Condition 3> The planned communication volume of the wireless communication terminal 10 is equal to or less than a threshold value. <Permission Condition 4> The evaluation value of the wireless communication terminal 10 is equal to or greater than a threshold value.

[0040] The evaluation value in the above permission condition 4 is an evaluation value that is assigned according to a predetermined condition. The predetermined condition is, for example, a condition that a higher evaluation value is assigned when the amount of communication used is small when a contract is concluded in the past than when the amount of communication used is large. In addition, the user of the communication terminal 20 may assign an evaluation value at the end of communication.

[0041] Moreover, the permission conditions 1 to 4 and other conditions may be appropriately combined to set the permission conditions. In this embodiment, the communication terminal 20 employs the permission condition 1 described above.

[0042] According to the contract system 100 of the present embodiment described above, for example, the communication terminal 20 can automatically permit sharing of the communication line INT to the wireless communication terminal 10 that has permitted sharing of the communication line INT in the past, or the wireless communication terminal 10 whose communication usage volume in the past is equal to or less than a predetermined communication volume. Therefore, the wireless communication terminal 10 that satisfies the permission conditions can make a contract for more reliable data communication.

[0043] E. Fifth embodiment: 7 is a diagram showing a schematic configuration of a contract system 100E in the fifth embodiment. The contract system 100E in the fifth embodiment is different from the contract system 100 in the first embodiment in that the wireless communication terminal 10 connects to the communication line INT via a repeater 22 capable of wireless communication, but other configurations are the same as those in the first embodiment.

[0044] In this embodiment, the communication terminal 20E includes a repeater 22. The communication terminal 20E is a personal computer connected by wire to the repeater 22. The repeater 22 is a router. In this embodiment, the term "communication terminal" is a concept that includes the repeater 22 capable of wireless communication.

[0045] When the communication terminal 20E permits the wireless communication terminal 10 to share the communication line INT, the communication terminal 20E transmits, to the wireless communication terminal 10, connection information for connecting to the repeater 22. The wireless communication terminal 10 connects to the communication line INT via the repeater 22 using the received connection information.

[0046] According to the contract system 100E of the present embodiment described above, the wireless communication terminal 10 can use the communication line INT via the repeater 22 even if the communication terminal 20E is performing wired communication.

[0047] F. Other Embodiments: (F1) In the above-described embodiment, the communication terminal 20 transmits information for connection after being determined as a sharing destination to the wireless communication terminal 10. Instead, the communication terminal 20 may transmit information for connection when transmitting permission for communication sharing.

[0048] (F2) In the above-described embodiment, the wireless communication terminal 10 displays the name, radio wave strength, and available time of the communication terminal detected in the event E100 (see FIG. 2) as the screen S1. Without being limited to this, the wireless communication terminal 10 can display, for example, the reward presented by the communication terminal, the communication speed, the amount of communication available per a predetermined unit time, whether the communication line INT is connected by wire or wirelessly, and the like. It is preferable that the wireless communication terminal 10 presents at least one of the communication strength and communication speed of the multiple communication terminals detected in the event E100 and the reward presented by the communication terminal to the user of the wireless communication terminal 10, and prompts the user to select a communication terminal to be used to use the communication line INT. In this way, the user can select a communication terminal to be used to use the communication line INT using the presented information. The wireless communication terminal 10 may also display, as the screen S1, a map showing a positional relationship with the communication terminal. FIG. 8 is an example of a map M1 displayed as the screen S1. In the map M1, the position of the wireless communication terminal 10 is indicated by a cross, and the position of the detected communication terminal is indicated by a black circle. The black circle indicating the position of the communication terminal is a button b11 that allows the user to select whether or not to request permission to share the communication line INT. For example, by pressing a black circle indicating an arbitrary communication terminal, information about that communication terminal is displayed.

[0049] (F3) In the above-described embodiment, when button b4 is pressed, the communication terminal 20 transmits a non-permission to share the communication line INT to the wireless communication terminal 10. Alternatively, when button b4 is pressed, the communication terminal 20 may end the process without doing anything. In this case, the wireless communication terminal 10 can determine that sharing of the communication line INT is not permitted if a permission for the reason of the communication line INT is not transmitted from the wireless communication terminal 10 for a predetermined time or more. Also, when button b4 is pressed, the communication terminal 20 may stop transmitting a message indicating that sharing of the communication line INT may be permitted.

[0050] (F4) In the above-described embodiment, the communication terminal 20 may be configured not to intentionally end the sharing of the communication line INT. This can prevent the wireless communication terminal 10 from suddenly becoming unable to use the communication line INT via the communication terminal 20. In addition, when the wireless communication terminal 10 gives a reward to the communication terminal 20, it can prevent the communication terminal 20 from intentionally repeating sharing of the communication line INT for the purpose of obtaining the reward.

[0051] (F5) In the above-described second embodiment, the wireless communication terminal 10 directly grants the reward to the communication terminal 20. Alternatively, the wireless communication terminal 10 may grant the reward indirectly to the communication terminal 20. For example, the wireless communication terminal 10 grants the reward to a platform developer that provides the contract system 100, and the reward remaining after the platform developer deducts a commission fee from the reward is granted to the communication terminal 20.

[0052] (F6) In the second embodiment described above, the wireless communication terminal 10 grants a reward when the use of the communication line INT via the communication terminal 20 is completed. Alternatively, the wireless communication terminal 10 may grant a reward when the use of the communication line INT via the communication terminal 20 is started. In this case, the wireless communication terminal 10 grants the communication terminal 20 a reward according to the communication volume planned to be used, for example, and can receive a refund of the reward from the communication terminal 20 if the communication volume actually used is less than planned when the use of the communication line INT is completed.

[0053] (F7) In the above-described third embodiment, the wireless communication terminal 10 acquires information used to determine whether the sharing destination determination condition is satisfied from the communication terminal 20. Also, in the above-described fourth embodiment, the communication terminal 20 acquires information used to determine whether the permission condition is satisfied from the wireless communication terminal 10. Alternatively, the wireless communication terminal 10 or the communication terminal 20 may acquire this information from an external server.

[0054] (F8) In the third embodiment described above, the wireless communication terminal 10 determines, as a sharer, a communication terminal 20 that satisfies a predetermined sharer determination condition in the event E130 (see FIG. 6). Alternatively, the wireless communication terminal 10 may automatically issue a communication sharing request to a communication terminal that satisfies the predetermined sharer determination condition in the event E110. In this case, the wireless communication terminal 10 receives, from the surrounding communication terminals 20 in the event E100, information used for determining whether or not the sharer determination condition is satisfied. Also, when there are multiple communication terminals 20 that satisfy the predetermined sharer determination condition, the communication terminal 20 that first permits sharing of the communication line INT among the multiple communication terminals 20 that satisfy the sharer determination condition may be determined as a sharer.

[0055] (F9) In the above-described fourth embodiment, when the wireless communication terminal 10 satisfies the permission conditions, the communication terminal 20 automatically permits the wireless communication terminal 10 to share the communication line INT. On the other hand, when the wireless communication terminal 10 does not satisfy the permission conditions, the communication terminal 20 allows the user to select whether or not to permit. This is not limited to the above, and for example, when the wireless communication terminal 10 does not satisfy the permission conditions, the communication terminal 20 may not display the screen S2 and automatically deny the wireless communication terminal 10 from sharing the communication line INT. On the other hand, when the wireless communication terminal 10 satisfies the permission conditions, the communication terminal 20 may display the screen S2 and allow the user to select whether or not to permit.

[0056] (F10) In the fifth embodiment described above, the repeater 22 is a router. However, the repeater 22 is not limited to this, and may be a mobile router, an access point, or the like.

[0057] The present disclosure is not limited to the above-mentioned embodiment, and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in the embodiments corresponding to the technical features in each form described in the Summary of the Invention column can be appropriately replaced or combined in order to solve the above-mentioned problems or to achieve some or all of the above-mentioned effects. Furthermore, if the technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0058] 10... wireless communication terminal, 11, 21... functional unit, 20, 20E... communication terminal, 22... repeater, 30... other communication terminal, 100, 100E... contract system, INT... communication line

Claims

1. A contract system that automatically processes a contract so that a wireless communication terminal can use a communication line via the communication terminal, The communication terminal is connected to the communication line provided by a telecommunications carrier and transmits a message indicating that there is a possibility of allowing sharing of the communication line; a wireless communication terminal capable of requesting permission to share the communication line from the communication terminal making the call by wireless communication; The communication terminal includes: determining whether to permit sharing of the communication line of the wireless communication terminal; when the sharing of the communication line of the wireless communication terminal is permitted, restricting the end of the sharing of the communication line of the communication terminal until the wireless communication terminal ends use of the communication line; The wireless communication terminal uses the communication line via the communication terminal when the communication terminal is permitted to share the communication line.

2. The contract system according to claim 1, A contract system in which the wireless communication terminal requests permission to share the communication line from multiple communication terminals, and uses the communication line through the communication terminal that is the first of the multiple communication terminals to be granted permission to share the communication line and that satisfies predetermined conditions.

3. A contract system according to claim 1 or 2, When making the request, the wireless communication terminal transmits information about the wireless communication terminal to the communication terminal; A contract system in which the communication terminal permits sharing of the communication line of the wireless communication terminal when the wireless communication terminal satisfies a predetermined condition based on the information regarding the wireless communication terminal.

4. A contract system according to any one of claims 1 to 3, The wireless communication terminal provides a reward to the communication terminal that permits sharing of the communication line.

5. A contract system according to claim 4, A contract system in which the remuneration is lower than the amount that the communication terminal pays to the telecommunications carrier for use of the communication line.

6. A contract system according to claim 4 or claim 5, A contract system in which the wireless communication terminal requests permission to share the communication line from multiple communication terminals, and uses the communication line via the communication terminal among the multiple communication terminals for which the remuneration is the cheapest.

7. A contract system according to claim 4 or claim 5, The wireless communication terminal presents to a user of the wireless communication terminal at least one of the communication strength, communication speed, and the reward of a plurality of communication terminals, and prompts the user to select a communication terminal to be used for utilizing the communication line.

8. The contract system according to claim 1, A contract system in which the wireless communication terminal requests permission to share the communication line from multiple communication terminals, and uses the communication line via a communication terminal among the multiple communication terminals that has the strongest communication strength.

9. The contract system according to claim 1, A contract system in which the wireless communication terminal requests permission to share the communication line from multiple communication terminals, and uses the communication line via a communication terminal among the multiple communication terminals that has the highest communication speed.

10. A contract system according to any one of claims 1 to 9, the communication terminal connects to the communication line via a repeater capable of wireless communication, and when sharing of the communication line is permitted to the wireless communication terminal, transmits connection information for wirelessly connecting to the repeater to the wireless communication terminal; A contract system in which the wireless communication terminal wirelessly connects to the repeater using the connection information and connects to the communication line via the repeater.

11. A computer program for causing a wireless communication terminal to use a communication line provided by a telecommunications carrier through a communication terminal connected to the communication line, the computer program comprising: a function of transmitting to the wireless communication terminal a notification that there is a possibility of allowing sharing of the communication line; a function of receiving, via wireless communication, a request for sharing the communication line transmitted by the wireless communication terminal; a function of transmitting, when a decision is made to permit the sharing, the permission to the wireless communication terminal that transmitted the request via the wireless communication; a function of causing the wireless communication terminal to utilize the communication line via the communication terminal; a function of restricting the end of sharing of the communication line by the communication terminal until the wireless communication terminal ends use of the communication line when a decision is made to permit the sharing; A computer program that causes the communication terminal to realize the above.

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