Terminal, management device, terminal control method, management device control method and program

Abstract

To provide a terminal and the like capable of recognizing a backhaul network when wireless communication is performed.SOLUTION: A terminal includes: a first communication unit that connects to a first wireless network that uses a first communication method; a second communication unit that connects to a second wireless network which uses a second communication method different from the first communication method, and that uses the second wireless network to connect to the first wireless network; and a control unit that, when information indicating the second communication method corresponding to the first communication method is received, controls communication of the second communication unit based on the received information.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a terminal, a management device, a method for controlling a terminal, a method for controlling a management device, and a program. [Background technology]

[0002] Wi-Fi is used as one of the wireless communication methods. For example, Patent Document 1 discloses a technique for distinguishing and displaying SSIDs (Service Set Identifiers) that identify wireless networks according to the setting mode. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-188518 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, systems that apply the next-generation mobile communication system, 5G (5th Generation) mobile communication system, to private networks have been used. In private networks, in areas where radio waves cannot reach, communication is supplemented by Wi-Fi belonging to the private network. In this case, terminals may receive not only Wi-Fi signals using the private network as a backhaul, but also external Wi-Fi signals.

[0005] Devices intended for use on private networks must connect to Wi-Fi that uses the private network as a backhaul. However, because the device is not aware of the Wi-Fi backhaul network, the device may connect to an external Wi-Fi network. This problem can also occur with wireless communications other than 5G.

[0006] In one aspect, an object of the present disclosure is to provide a terminal or the like that can recognize a backhaul network when performing wireless communication. [Means for solving the problem]

[0007] A terminal according to one embodiment of the present invention includes a first communication unit that connects to a first wireless network using a first communication method, a second communication unit that connects to a second wireless network using a second communication method different from the first communication method and connects to the first wireless network using the second wireless network, and a control unit that, when receiving information indicating a second communication method corresponding to the first communication method, controls communication of the second communication unit based on the received information.

[0008] A management device according to another aspect of the present invention includes a memory unit that stores information indicating a first wireless network using a first communication method and information indicating a second wireless network that connects to the first wireless network using a second communication method different from the first communication method, in association with each other, and a notification unit that references the memory unit and notifies one or more terminals belonging to the first wireless network of information indicating the second communication method that corresponds to the first communication method. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 illustrates an example of a system. [Figure 2] FIG. 2 is a diagram illustrating an example of a hardware configuration of a terminal. [Figure 3] FIG. 2 illustrates an example of a hardware configuration of an NMS. [Figure 4] FIG. 10 is a sequence diagram showing an example of a process flow for notifying Wi-Fi information. [Figure 5] FIG. 10 is a diagram illustrating an example of a table associating connected SIMs, connected DNNs, Wi-Fi information, and connection profile information. [Figure 6] 10 is a flowchart illustrating an example of the flow of processing performed by the NMS when Wi-Fi information is received. [Figure 7]FIG. 10 is a sequence diagram showing an example of a processing flow until a terminal connects to Wi-Fi. [Figure 8] 6 is a flowchart showing an example of the flow of processing performed by the terminal in the first embodiment. [Figure 9] This is a diagram showing an example in which two internal Wi-Fi routers are installed. [Figure 10] FIG. 10 is a diagram showing an example of another table in which connected SIMs, connected DNNs, Wi-Fi information, and connection profile information are associated with each other. [Figure 11] FIG. 10 is a sequence diagram showing an example of a processing flow according to the second embodiment. [Figure 12] 10 is a flowchart showing an example of the flow of processing performed by a terminal in the second embodiment. [Figure 13] FIG. 11 is a sequence diagram showing an example of a processing flow according to a third embodiment. [Figure 14] 11 is a flowchart showing an example of the flow of processing performed by a terminal in the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Each embodiment will be described below. Each of the following embodiments can be modified as appropriate. Furthermore, the configuration of each embodiment can be replaced with a substantially similar configuration, a configuration that provides similar effects, or a configuration that can achieve similar purposes. Furthermore, the order of the processes in the flowcharts described in each embodiment can be changed as much as possible.

[0011] First Embodiment FIG. 1 is a diagram illustrating an example of a system 10 according to the present embodiment. The system 10 of FIG. 1 may also be applied to other embodiments. The system 10 includes a base station 20, a terminal 30, an L5G network 40, and a carrier network 50. The L5G is a private network such as local 5G, for example. The base station 20 is installed within a premises 21. The base station 20 provides a first wireless network using a first communication method.

[0012] In each embodiment, the first wireless communication method is a wireless communication method that complies with the specifications of a 5th Generation (5G) mobile communication system (hereinafter referred to as 5G), which is a fifth generation mobile communication system. The first wireless network is a network that applies 5G to a private network (hereinafter referred to as local 5G). However, the first wireless communication method may be any wireless communication method, such as LTE (Long Term Evolution).

[0013] Site 21 is, for example, the site of a construction site, a factory, or the like. Local 5G area A1 established by base station 20 covers a portion of site 21. Base station 20 is connected to an L5G network 40, and wireless communication using local 5G is possible within the range of the approximately circular area A1 indicated by the solid line. The L5G network represents a local 5G network.

[0014] In the example of FIG. 1, a plurality of terminals 30A to 30E (hereinafter collectively referred to as terminals 30) exist within the premises 21. There may be only one terminal 30 within the premises 21. The terminal 30 is, for example, a terminal with a wireless communication function, such as a smartphone, mobile phone, or tablet terminal. The terminal 30 can perform local 5G communication within the range of area A1. The terminal 30 is also referred to as UE (User Equipment).

[0015] Because local 5G is a private network, the area in which local 5G can communicate is restricted so as not to extend outside the premises 21. For this reason, area A1 cannot cover the entire premises 21. For example, the corners of the premises 21 are outside the range of area A1 and are out-of-range locations where local 5G communication is not possible.

[0016] An internal Wifi router 22 is installed as a Wifi device within area A1 of base station 20. The internal Wifi router 22 covers a substantially circular area A2 indicated by a dashed line as an area where wireless communication via Wifi is possible. The internal Wifi router 22 is provided to complement wireless communication in area A2 of premises 21 that is outside the local 5G area A1, using local 5G as a backhaul. Wifi corresponds to the second communication method, and the wireless network established by the internal Wifi router 22 corresponds to the second wireless network. The second communication method may be, for example, any short-range wireless communication method such as Bluetooth (registered trademark).

[0017] The L5G network 40 includes a 5GC 41, an NMS 42, and MECs 43 and 44. The L5G network 40 corresponds to the first wireless network. The L5G network 40 connects the base station 20 to an internal or external network. The base station 20 may be configured to be included in the L5G network 40. The L5G network 40 is connected to the base station 20 so that they can communicate with each other via wired or wireless communication. The 5GC 41 is a core network that controls local 5G communication. The NMS (Network Management System) 42 manages the network including the 5GC 41, and controls and manages local 5G communication based on communication between the 5GC 41 and the terminal 30. Hereinafter, it is assumed that data is exchanged between the NMS 42 and the terminal 30 via the 5GC 41. The NMS 42 corresponds to a management device.

[0018] MECs (Multi-access Edge Computing) 43, 44 are each connected to a different DN (Data Network). MEC (DNN_A) 43 is an MEC whose destination DNN corresponds to "DNN_A". MEC (DNN_B) 44 is an MEC whose destination DNN corresponds to "DNN_B". The L5G network 40 may include one MEC, or may include three or more MECs. The DNN is information indicating the name of the destination network. The DNN may be an APN (Access Point Name).

[0019] The 5GC 41, the NMS 42, and the MECs 43 and 44 may be implemented by different computers or servers, or may be implemented in part or entirely by a single computer or server. Also, the 5GC 41, the NMS 42, and the MECs 43 and 44 may each be a software component executed by one or more computers or servers.

[0020] NMS42 may be included in an AMF (Access and Mobility Management Function: subscriber), an SMF (Session Management Function), or an UPF (User Plane Function), or may be included in an NF (Network Function) that aggregates these functions.

[0021] The carrier network 50 provides a wireless network operated by a telecommunications carrier. The wireless network is a wireless network of a wireless communication method that complies with the specifications of a 5G mobile communication system, which is a fifth-generation mobile communication system. However, the wireless network may be a wireless network such as the LTE mentioned above.

[0022] The carrier network 50 includes a 5GC 51. The 5GC 51 is a core network that controls 5G communication. The 5GC 51 is not a private network, but provides 5G wireless communication in a public area built by a telecommunications carrier.

[0023] The 5GC 51 is wirelessly connected to the external Wifi router 52. The external Wifi router 52 covers a substantially circular area A3 indicated by a dashed dotted line as an area where wireless communication via Wifi is possible. The backhaul of the external Wifi router 52 is the carrier network 50. The Wifi wireless communication method of the external Wifi router 52 and the Wifi wireless communication method of the internal Wifi router 22 may be the same or different.

[0024] Next, an example of the terminal 30 will be described. Fig. 2 is a diagram showing an example of the hardware configuration of the terminal 30. The terminal 30 includes a terminal control unit 31, a communication unit 32, a storage unit 33, a display unit 34, and an operation input unit 35. The terminal 30 may not include some of the elements of the hardware configuration in Fig. 2, or may include other elements.

[0025] The terminal control unit 31 includes, for example, one or more processors. The processor executes a program including multiple instruction sets, thereby performing the processing executed by the terminal control unit 31 in each embodiment. The program is stored in, for example, the storage unit 33. The terminal control unit 31 corresponds to a control unit.

[0026] The communication unit 32 includes a first communication unit 38A and a second communication unit 38B. The communication unit 32 is configured by a predetermined circuit including, for example, a module for performing local 5G communication and a module for performing Wifi communication. The first communication unit 38A is connected to a first antenna 39A. The first communication unit 38A transmits and receives signals in the local 5G communication via the first antenna 39A. The second communication unit 38B is connected to a second antenna 39B. The second communication unit 38B transmits and receives signals in the Wifi communication via the second antenna 39B.

[0027] The storage unit 33 stores various types of information. The storage unit 33 may be a memory such as a random access memory (RAM) or a storage medium such as a solid state drive (SSD). The display unit 34 displays various types of information under the control of the terminal control unit 31. The operation input unit 35 accepts operations from an operator or user carrying the terminal 30. The display unit 34 and the operation input unit 35 may be a touch panel display integrally configured.

[0028] The terminal control unit 31 includes a communication control unit 36 ​​and a communication information processing unit 37. The communication control unit 36 ​​controls communication of the local 5G communication and Wi-Fi communication performed by the terminal 30. The communication information processing unit 37 performs various processes in each embodiment.

[0029] Next, an example of the NMS 42 will be described. Fig. 3 is a diagram showing an example of the hardware configuration of the NMS 42. The NMS 42 includes a system control unit 61 and a storage unit 62. The NMS 42 may also include other elements. The system control unit 61 corresponds to a notification unit.

[0030] The system control unit 61 includes, for example, one or more processors. The processor executes a program including a plurality of instruction sets, thereby performing the processing executed by the system control unit 61 in each embodiment. The program is stored in, for example, the storage unit 62. The storage unit 62 stores various types of information. The storage unit 62 may be a storage device such as a hard disk drive, or may be the above-mentioned memory or storage medium.

[0031] 3 shows an example in which the NMS 42 and the 5GC 41 are separated, but as described above, the NMS 42 and the 5GC 41 may be software components included in one or more servers. In the following description, the NMS 42 and the 5GC 41 will be described as software components included in one or more servers.

[0032] The NMS 42 controls and manages the local 5G communication between the 5GC 41 and the terminal 30. The system control unit 61 includes a communication control unit 46 and a communication information management unit 47. The communication control unit 46 controls the communication of the 5GC 41. The communication information management unit 47 manages the network of the local 5G communication.

[0033] 1, each terminal 30 located within the range of area A1 is carried by, for example, a worker. Assume that terminal 30A among the terminals 30 is connected to MEC(DNN_A) 43. As shown in FIG. 1, when the worker carrying terminal 30A moves from area A1 to a corner of site 21, terminal 30A goes outside the range of area A1.

[0034] When terminal 30A moves out of area A1, it moves out of the range of local 5G wireless communication. However, even if terminal 30A moves from area A1 to area A2, area A2 is an area that uses local 5G as a backhaul. Therefore, terminal 30A can continue local 5G wireless communication via Wi-Fi communication by internal Wi-Fi router 22 within the range of area A2.

[0035] In the example of Fig. 1, the terminal 30A moves to a position where the range of area A2 of the internal Wifi router 22 and the range of area A3 of the external Wifi router 52 overlap. In this case, the terminal 30A can connect to both the internal Wifi router 22 and the external Wifi router 52. Therefore, of the internal Wifi router 22 and the external Wifi router 52, the terminal 30A needs to connect to the internal Wifi router 22 that uses the local 5G provided by the base station 20 as a backhaul.

[0036] Also, as described above, the terminal 30A is connected to the MEC(DNN_A) 43. When the terminal 30A moves from area A1 to area A2, in order to continue wireless communication, the connected MEC also needs to maintain the MEC(DNN_A) 43. In other words, when the terminal 30A is outside the range of area A1 and moves within the range of area A2, in order to continue wireless communication when it was within the range of area A1, it needs to connect to the internal Wi-Fi router 22 that uses local 5G as a backhaul and to connect to the same DNN.

[0037] Therefore, even if the terminal 30A moves from area A1 to area A2, the NMS 42 notifies the terminal 30A of information (hereinafter referred to as Wi-Fi information) for performing wireless communication using local 5G as a backhaul and connecting to the same DNN as before the movement. The terminal 30A performs Wi-Fi connection control based on the notified Wi-Fi information. The Wi-Fi information corresponds to information indicating a second communication method corresponding to the first communication method. The Wi-Fi information will be described later.

[0038] Here, in FIG. 1, when the carrier network 50 and the L5G network 40 are connected via a predetermined network, a case may be considered in which the terminal 30A connects to the MEC(DNN_A) 43 via the carrier network 50. However, it is assumed that the terminal 30A will be used in a private network called local 5G. Also, if the terminal 30A connects to the MEC(DNN_A) 43 via the carrier network 50, it becomes difficult to perform low-latency communication. Furthermore, extra costs are incurred for using the above-mentioned predetermined network. For this reason, the terminal 30A basically does not connect to the MEC(DNN_A) 43 via the carrier network 50.

[0039] Fig. 4 is a sequence diagram showing an example of the flow of a process for notifying Wi-Fi information in the first embodiment. In the sequence diagram of Fig. 4, an example is shown in which there is one terminal, but there may be multiple terminals.

[0040] The internal Wi-Fi router 22 transmits a connection request to the 5GC 41 via a network including the base station 20, and the NMS 42 acquires the connection request (step S10). The connection request acquired by the NMS 42 includes SIM (Subscriber Identity Module) information and information on the destination DNN. Hereinafter, the SIM information may be any information that can identify the SIM information. Hereinafter, the description will be given assuming that the destination DNN of the internal Wi-Fi router 22 is DNN_A, but the destination DNN may be any DNN. The connection request transmitted by the internal Wi-Fi router 22 may be, for example, a PDU Session Establishment Request.

[0041] Based on the connection request, the 5GC41 establishes a connection between the internal Wifi router 22 and the DNN_A (step S11). Based on the connection information acquired via the 5GC41, the NMS42 updates a table showing the correspondence between the SIM, the DNN, and Wifi (step S12). The table is stored in the storage unit 62. The processing of step S12 may be executed during the processing of step S11.

[0042] 5 is a diagram showing an example of a table associating a connecting SIM, a connecting DNN, Wi-Fi information, and connection profile information. The connecting SIM is SIM information included in the connection request. The connecting DNN is information indicating the DNN of the connection destination included in the connection request. At the time step S13 is executed, NMS42 has not received the Wi-Fi information, so the Wi-Fi information is not recorded.

[0043] For example, assume that the SIM of the internal Wi-Fi router 22 is "001." Since the DNN to which the connection is made is "DNN_A," the NMS 42 adds "001" as the connected SIM to the table in FIG. 5 and adds "DNN_A" to the corresponding connected DNN.

[0044] 4, when the internal Wifi router 22's Wifi access point (AP) function is turned on, it transmits Wifi radio waves to the surrounding area (step S13). Then, the internal Wifi router 22 notifies the NMS 42 of SSID (Service Set Identifier) ​​information together with SIM information (step S14). The NMS 42 updates the table based on the notification obtained via the 5GC 41 (step S15). The SSID is Wifi information that identifies Wifi devices that perform Wifi communication, such as the internal Wifi router 22 and the terminal 30.

[0045] For example, assume that the SSID of the internal Wifi router 22 is "SSID_A." In this case, the NMS 42 records the Wifi information "SSID_A" corresponding to "001," which is the SIM of the internal Wifi router 22, in the table. As a result, the correspondence between the connected SIM, the connected DNN, and the Wifi information is recorded in the table of the example of FIG.

[0046] The NMS 42 notifies one or more terminals 30 that have the same DNN as the destination DNN of the terminals 30 belonging to the local 5G area A1 established by the base station 20 of the Wi-Fi information corresponding to the DNN (step S16). Based on this control, the 5GC 41 performs the above notification to the one or more terminals 30.

[0047] For example, in the example table of FIG. 5, the terminals 30 whose connected SIMs are "002" and "003" have the same connected DNN, "DNN_A." In this case, the NMS 42 notifies the terminal 30 whose connected SIM is "002" and the terminal 30 whose connected SIM is "003" of "SSID_A" as Wi-Fi information. On the other hand, the connected DNN of the terminal 30 whose connected SIM is "004" is "DNN_B." In this case, the NMS 42 does not notify the terminal 30 whose connected SIM is "004" of the Wi-Fi information of "SSID_A."

[0048] 4, the Wi-Fi information may be any information that identifies a Wi-Fi device, not an SSID. For example, the Wi-Fi information may be an Extended Service Set Identifier (ESSID), a Basic Service Set Identifier (BSSID), a Media Access Control (MAC) address, etc.

[0049] Furthermore, Wifi routers such as the internal Wifi router 22 and the external Wifi router 52 may be any Wifi device with a Wifi function. The Wifi router may be a fixedly installed one or a portable mobile Wifi router. In FIG. 4, the internal Wifi router 22 may be any device such as a terminal 30. Furthermore, a device capable of Wifi communication with the internal Wifi router 22 may obtain the SIM information, destination DNN, and Wifi information of the internal Wifi router 22 and notify the NMS 42 of the obtained information.

[0050] The SIM information may also be an IP address, etc. A unique IP address is assigned to each device that performs local 5G communication, such as the internal Wi-Fi router 22 and the terminal 30. Therefore, the IP address can be used instead of the SIM information.

[0051] Next, the process performed by the NMS 42 when the Wi-Fi information is acquired will be described. Fig. 6 is a flowchart showing an example of the process performed by the NMS 42 when the Wi-Fi information is received. The communication control unit 46 of the NMS 42 acquires the Wi-Fi information and SIM information received by the 5GC 41 via a network such as the base station 20 (step S20).

[0052] The communication information management unit 47 of the NMS 42 refers to the table stored in the memory unit 62, references the connection DNN corresponding to the acquired SIM information, links the connection DNN with the Wi-Fi information, and updates the table (step S21).

[0053] The communication information management unit 47 refers to the table of Fig. 5 and determines whether there is a terminal 30 connected to the same connection DNN as the connection DNN associated in step S21 (step S22). For example, in the case of the table of Fig. 5, if the associated connection DNN is "DNN_A", the terminal 30 with the connection SIM "002" and the terminal 30 with the connection SIM "003" are connected to "DNN_A", so the result is Yes in step S22. On the other hand, if the associated connection DNN is "DNN_B", there is no terminal 30 that has the same connection DNN as the associated connection DNN as its connection destination, so the result is No in step S22.

[0054] If the communication information management unit 47 determines Yes in step S22, it transmits the associated Wi-Fi information to all terminals 30 that are within the range of area A1 and that have the same DNN as the DNN associated in step S21 as their connection destination (step S23). The 5GC41 transmits the Wi-Fi information to each target terminal 30. On the other hand, if the communication information management unit 47 determines No in step S22, it terminates the processing of the flowchart in FIG. 6 without executing the processing of step S23.

[0055] The system 10 in FIG. 1 shows an example of a multi-DNN configuration in which the L5G network 40 has two DNNs (MEC(DNN_A) 43 and MEC(DNN_B) 44). The L5G network 40 may have only one DNN. In this case, it is not necessary to determine for each DNN whether there is an associated terminal 30, and therefore the determination process of step S22 in the flowchart in FIG. 6 is omitted.

[0056] The NMS42 manages or recognizes the communication status of the 5GC51, and therefore can recognize whether there is one or more DNNs connected from the 5GC51. The NMS42 also recognizes information about each terminal 30 connected to the 5GC51. The information about the terminal 30 also includes information about the DNN to which it is connected, and therefore the NMS42 can recognize, based on this information, whether there is one or more DNNs connected from the 5GC51. The NMS42 may determine, based on the result of the above recognition, whether to omit the determination process of step S22 in FIG. 6.

[0057] Next, the processing on the terminal 30 side will be described. Fig. 7 is a sequence diagram showing an example of the processing flow until the terminal 30 connects to Wi-Fi in the first embodiment. Steps S30 to S35 in Fig. 7 are the same as steps S10 to S15 in Fig. 4, and therefore description thereof will be omitted.

[0058] The terminal 30 transmits a connection request to the 5GC 41 via a network including the base station 20, and the NMS 42 acquires the connection request (step S36). The connection request information transmitted to the NMS 42 includes SIM information and information on the destination DNN. In the following description, the destination DNN is assumed to be DNN_A. The 5GC 41 establishes a connection between the terminal 30 and DNN_A based on the connection request (step S37).

[0059] 5, the Wi-Fi information corresponding to the connected DNN "DNN_A" is "SSID_A." The NMS 42 refers to the table and notifies each terminal 30 of the connected SIM corresponding to the connected DNN "DNN_A" of "SSID_A" as the Wi-Fi information (step S38).

[0060] The terminal 30 determines whether the local 5G network communication quality has fallen below a predetermined level (step S39). Details of the communication quality determination will be described later. If the terminal 30 determines that the local 5G network communication quality has fallen below a predetermined level, it connects to the internal Wi-Fi router 22 based on the received Wi-Fi information "SSID_A" (step S40).

[0061] Next, the processing performed by the terminal 30 in the sequence diagram of Fig. 7 will be described. Fig. 8 is a flowchart showing an example of the flow of processing performed by the terminal 30 in the first embodiment. The communication control unit 36 ​​of the terminal 30 controls connection to the L5G network 40 via the first communication unit 38A and the first antenna 39A (step S50). At this time, the communication control unit 36 ​​transmits the above-mentioned connection request to the 5G network 41 via the first communication unit 38A and the first antenna 39A. The connection request is acquired by the NMS 42. It is assumed that the DNN to which the terminal 30 is to connect is "DNN_A".

[0062] The communication control unit 36 ​​determines whether Wi-Fi information has been acquired (step S51). As described using the sequence diagram of Fig. 7, the terminal 30 transmits a connection request to the 5GC 41, and the NMS 42 acquires the connection request. The NMS 42 refers to the table of Fig. 5, and if there is information on the connection DNN that is the same as the connection DNN included in the acquired connection request and there is corresponding Wi-Fi information, it transmits the Wi-Fi information to the terminal 30. On the other hand, if there is no information on the connection DNN that is the same as the connection DNN included in the received connection request in the table of Fig. 5, or if there is no corresponding Wi-Fi information, the NMS 42 does not transmit the Wi-Fi information to the terminal 30.

[0063] If the terminal 30 has received the Wifi information, the communication information processing unit 37 of the terminal 30 determines Yes in step S51 and stores the received Wifi information (Wifi information with local 5G as a backhaul) in the storage unit 33 (step S52). The received Wifi information is "SSID_A." On the other hand, if the terminal 30 has not received the Wifi information, the communication information processing unit 37 determines No in step S51 and proceeds to step S53.

[0064] The communication information processing unit 37 determines whether the local 5G network communication quality has fallen below a predetermined level (step S53). For example, as the terminal 30 moves farther away from the base station 20, the local 5G network communication quality deteriorates, making continuation of local 5G communication unstable. When the terminal 30 moves outside the range of area A1, it is out of the local 5G range and communication cannot be continued. The predetermined level may be a value that determines whether it is out of the local 5G range.

[0065] The communication information processing unit 37 may make the determination in step S53 based on whether index values ​​such as SS-RSRP (Synchronization Signal-Reference Signal Received Power) and SS-RSRQ (Synchronization Signal-Reference Signal Received Quality) have become equal to or less than a predetermined value.

[0066] If the local 5G network communication quality exceeds a predetermined level, the terminal 30 is within the range of area A1 and local 5G communication can continue. In this case, the communication information processing unit 37 determines No in step S53 and returns the process to step S53.

[0067] If the local 5G network communication quality falls below a predetermined level, it becomes impossible to continue local 5G communication by the terminal 30. In this case, the communication information processing unit 37 determines Yes in step S53 and proceeds to step S54.

[0068] The communication information processing unit 37 determines whether Wi-Fi information has been received from the L5G network 40 (step S54). As described above, the Wi-Fi information received from the L5G network 40 in step S52 is stored in the storage unit 33. The communication information processing unit 37 may make the determination in step S54 based on whether the Wi-Fi information is stored in the storage unit 33.

[0069] If the communication information processing unit 37 determines that Wi-Fi information has been received from the L5G network 40, it determines Yes in step S54 and proceeds to step S55. Then, the communication information processing unit 37 determines whether a Wi-Fi connection is possible based on the Wi-Fi information received from the L5G network 40 (step S55).

[0070] As described above, it is assumed that the Wifi information received from the L5G network 40 is "SSID_A." In this case, the communication information processing unit 37 determines whether the second antenna 39B has received a Wifi radio wave whose SSID is "SSID_A" via the second communication unit 38B.

[0071] "SSID_A" is the SSID of the internal Wi-Fi router 22 that uses local 5G as a backhaul. Therefore, the terminal 30 can connect to the internal Wi-Fi router 22 with "SSID_A" received from the L5G network 40. For this reason, the communication information processing unit 37 performs control to establish a Wi-Fi connection to the internal Wi-Fi router 22 whose SSID is "SSID_A" (step S56). As a result, even if the terminal 30 goes outside the range of area A1, communication with the same DNN as the connection destination and using local 5G as a backhaul continues.

[0072] If the communication information processing unit 37 determines No in step S54 or step S55, communication using local 5G as a backhaul cannot be continued. In this case, the communication information processing unit 37 ends the processing of the flowchart in Fig. 8 without executing the processing of step S56. After executing the processing of step S56, the communication information processing unit 37 ends the processing of the flowchart in Fig. 8.

[0073] Here, it is assumed that the terminal 30A in Fig. 1 is a terminal whose connected SIM is "002" in the table in Fig. 5. The terminal 30A is connected to the MEC (DNN_A) 43 of the L5G network 40 via the base station 20 within the range of the area A1.

[0074] When the access point function of the internal Wi-Fi router 22 is turned on, the NMS 42 acquires the SIM information and Wi-Fi information of the internal Wi-Fi router 22 via the 5GC 41. Then, the NMS 42 associates "DNN_A" corresponding to the connected SIM "001" indicated in the acquired SIM information with "SSID_A" indicated in the Wi-Fi information, and updates the table of FIG.

[0075] 5, the connecting SIM "002" is associated with the connecting DNN "DNN_A", and the connecting DNN "DNN_A" is associated with the Wi-Fi information "SSID_A". Therefore, the NMS 42 performs control to notify the terminal 30A of the connecting SIM "002" corresponding to the connecting DNN "DNN_A" of the Wi-Fi information "SSID_A".

[0076] Based on the above control, the Wi-Fi information "SSID_A" is notified to the terminal 30A within the range of the area A1 from the base station 20. The terminal 30A stores the notified Wi-Fi information "SSID_A" in the storage unit 33.

[0077] When the terminal 30A moves toward the boundary of area A1, the local 5G network communication quality of the terminal 30A deteriorates. When the terminal 30A moves to a position where area A2 and area A3 in FIG. 1 overlap, the terminal 30A receives radio waves from the internal Wi-Fi router 22 and the external Wi-Fi router 52.

[0078] As described above, the terminal 30A receives the Wifi information "SSID_A" of the internal Wifi router 22 from the L5G network 40. The terminal 30A connects to the internal Wifi router 22 identified by the Wifi information "SSID_A". As a result, the terminal 30A connects to the internal Wifi router 22 that uses the local 5G as a backhaul, without connecting to the external Wifi router 52.

[0079] Also, as described above, the connection DNN of the internal Wi-Fi router 22 is "DNN_A." Therefore, the terminal 30A can continue communication with the same DNN as the connection destination, using the local 5G as a backhaul. If the system 10 does not have the above-mentioned multi-DNN configuration, there is only one connection destination DNN, so the connection destination DNN can be maintained and communication can be continued using the local 5G as a backhaul.

[0080] Furthermore, there are cases where the SIM card of the internal Wifi router 22 is replaceable. If a valid SIM card is removed from the internal Wifi router 22 and an unauthorized SIM card is inserted, the backhaul of the internal Wifi router 22 will no longer be the L5G network 40. On the other hand, if the terminal 30A does not recognize that an unauthorized SIM card has been inserted into the internal Wifi router 22, the terminal 30A will make an incorrect connection.

[0081] For example, if the internal Wi-Fi router 22 is switched to an unauthorized SIM card, a disconnection request process, a detachment process, etc. are executed. The NMS 42 deletes the information of the internal Wi-Fi router 22 that has been switched to an unauthorized SIM card from the table of FIG. 5. The NMS 42 controls to notify the terminal 30A that the information of the internal Wi-Fi router 22 has been deleted. Upon receiving the notification, the terminal 30A recognizes that the information of the internal Wi-Fi router 22 has been deleted from the table of FIG. 5. The terminal 30A then controls not to connect to the internal Wi-Fi router 22. This makes it possible to deal with unauthorized replacement of the SIM card of the internal Wi-Fi router 22 automatically, rather than manually.

[0082] It is also possible that the setting of the DNN to which the internal Wi-Fi router 22 is connected is changed by mistake. For example, if the internal Wi-Fi router 22 uses "DNN_A" as the DNN to which the internal Wi-Fi router 22 is connected, the terminal 30A recognizes the Wi-Fi information of the internal Wi-Fi router 22 based on the table in Fig. 5. In this case, the terminal 30A can communicate normally using the internal Wi-Fi router 22.

[0083] Now, let's assume that the DNN to which the internal Wi-Fi router 22 is connected is changed to "DNN_B." In this case, the NMS 42 updates the information DNN of the internal Wi-Fi router 22 in the table of FIG. 5 to "DNN_B." At this time, the internal Wi-Fi router 22 is no longer "DNN_A" in the table of FIG. 5, and therefore the Wi-Fi information using "DNN_A" is no longer included. The NMS 42 notifies the terminal 30A that the information about the internal Wi-Fi router 22 has been deleted. Upon receiving this notification, the terminal 30A recognizes that the information about the internal Wi-Fi router 22 has been deleted from the Wi-Fi information. The terminal 30A then controls itself so as not to connect to the internal Wi-Fi router 22. This allows automatic response even if the DNN to which the internal Wi-Fi router 22 is connected is changed by mistake.

[0084] In the above, it is assumed that a new internal Wi-Fi router 22 installed within the range of area A1 is connected to the L5G network 40. The SSID of the new internal Wi-Fi router 22 is "SSID_C" and the destination DNN is "DNN_C." In this case, the NMS 42 updates the table in Fig. 5 and notifies each terminal 30 whose destination DNN is "DNN_C" of "SSID_C" as Wi-Fi information.

[0085] As a result, even if a new internal Wifi router 22 is installed within the range of the local 5G area A1, a terminal 30 whose connected DNN is "DNN_C" can continue communication using the Wifi communication of the new internal Wifi router 22 with the local 5G as a backhaul, even if it leaves the area A1.

[0086] 5 of this embodiment, the connection SIM, the connection DNN, and the Wi-Fi information are associated with each other, but connection profile information may also be associated with each other. Then, the terminal 30 that has moved out of the range of area A1 may be notified of which of the multiple internal Wi-Fi routers to preferentially connect to based on the connection SIM, the connection DNN, the Wi-Fi information, and the connection profile information.

[0087] Figure 9 is a diagram showing an example in which two internal Wifi routers 22, 23 are installed. The internal Wifi router (X) 23 corresponds to the internal Wifi router 22 in Figure 1. The internal Wifi router (Y) 24 is an internal Wifi router different from the internal Wifi router (X) 23. The internal Wifi router (Y) 24 covers a substantially circular area A4 indicated by a two-dot chain line as an area in which wireless communication via Wifi is possible.

[0088] The internal Wi-Fi router (X) 23 and the internal Wi-Fi router (Y) 24 use the same local 5G as a backhaul and also connect to the same DNN, "DNN_A." The SSID of the internal Wi-Fi router (X) 23 is "SSID_A," and the SSID of the internal Wi-Fi router (Y) 24 is "SSID_D."

[0089] Assume that the QoS (Quality of Service) value of the internal Wi-Fi router (X) 23 is "1" and the QoS value of the internal Wi-Fi router (Y) 24 is "9." QoS represents the connection priority of a communication. The lower the QoS value, the higher the connection priority of the communication, and the higher the QoS value, the lower the connection priority of the communication. The connection priority of a communication may be represented by an index other than QoS (connection profile information).

[0090] For example, the NMS 42 stores another table that associates a connected SIM, a connected DNN, Wi-Fi information, and connection profile information. FIG. 10 is a diagram showing an example of the other table. The connected SIM "001" represents the SIM of the internal Wi-Fi router (X) 23, and the QoS as profile information is "1." The connected SIM "002" represents the terminal 30A.

[0091] The connected SIM "005" represents the SIM of the internal Wifi router (Y) 24, and the QoS as profile information is "9." The connected DNN of the internal Wifi router (X) 23 and the internal Wifi router (Y) 24 is "DNN_A."

[0092] When the access point function of the internal Wi-Fi router (X) 23 is turned on, the terminal 30A within the range of area A1 is notified of "SSID_A" as the Wi-Fi information and QoS "1" as the profile information. Also, when the access point function of the internal Wi-Fi router (Y) 24 is turned on, the terminal 30A within the range of area A1 is notified of "SSID_D" as the Wi-Fi information and QoS "9" as the profile information.

[0093] The terminal 30A can perform communication using the internal Wi-Fi router (X) 23 as a backhaul, and can also perform communication using the internal Wi-Fi router (Y) 24 as a backhaul.

[0094] As described above, the QoS value of the internal Wifi router (X) 23 is "1." Then, as shown in the example of Fig. 9, it is assumed that the terminal 30A moves from area A1 to a position where area A2 of the Wifi communication of the internal Wifi router (X) 23 and area A4 of the Wifi communication of the internal Wifi router (Y) 24 overlap. In this case, the terminal 30A can communicate using the internal Wifi router (X) 23 and the internal Wifi router (Y) 24.

[0095] As described above, the terminal 30A is notified of the profile information along with the Wifi information. In addition, the QoS value of the terminal 30A is "1". The terminal 30A refers to the profile information and connects to the internal Wifi router with the closest QoS value (condition) indicated by the profile information. As described above, the QoS value of the terminal 30A is "1", and the QoS value of the internal Wifi router (X) 23 is also "1".

[0096] Therefore, the terminal 30A performs control to preferentially connect to the internal Wi-Fi router (X) 23 with the closest QoS value (condition) between the internal Wi-Fi router (X) 23 and the internal Wi-Fi router (Y) 24. This allows the terminal 30A to continue communication with the priority of the condition closest to that of the local 5G communication in area A1. In the above description, an example has been described in which different QoS information is notified to the terminal 30A within the range of area A1, but this example is not limited to this. For example, the NMS 42 may perform control to notify corresponding Wi-Fi information by narrowing down the QoS conditions to the same as the QoS conditions of the terminal 30A. For example, in the above example, the terminal 30A may be notified of only the Wi-Fi information of the internal Wi-Fi router (X) 23 with the same QoS conditions as the QoS conditions of the terminal 30A. This allows the terminal 30A to connect to the optimal internal Wi-Fi router without performing a QoS determination process.

[0097] Second Embodiment Next, a second embodiment will be described. When the terminal 30 receives a Wi-Fi radio wave from a nearby Wi-Fi device, the terminal 30 may connect to the Wi-Fi device. In the second embodiment, the terminal 30 is prevented from connecting to a Wi-Fi device other than a Wi-Fi device that uses local 5G as a backhaul.

[0098] 11 is a sequence diagram showing an example of the processing flow of the second embodiment. In the following description, the terminal 30 is assumed to be a terminal 30A with a destination DNN set to "DNN_A." When the Wifi access point function of the external Wifi router 52, which is a Wifi device that does not use local 5G as a backhaul, is turned on, the external Wifi router 52 transmits Wifi radio waves around the external Wifi router 52 (step S60).

[0099] The processing of steps S61 and S62 is the same as the processing of steps S36 and S37 in Fig. 7, and therefore description thereof will be omitted. Within the range of area A1, the terminal 30 performs local 5G communication with "DNN_A" as the destination DNN.

[0100] For example, assume that area A3, which receives Wi-Fi radio waves transmitted by the external Wi-Fi router 52, overlaps with area A1 of the local 5G established by the base station 20. In this case, when the terminal 30A enters the range of area A3, the terminal 30 detects the external Wi-Fi router 52 (step S63). Then, the terminal 30A determines whether the network communication quality of the local 5G has fallen below a predetermined level (step S64).

[0101] When the network communication quality of the local 5G of the terminal 30A falls below a predetermined level, the terminal 30A performs Wi-Fi connection control (step S65). At this time, the terminal 30A performs control to connect only to the internal Wi-Fi router 22 corresponding to the SSID of the Wi-Fi information received from the NMS 42 via the 5GC 41. Below, we will explain the processing performed by the terminal 30A, including the above-mentioned Wi-Fi connection control.

[0102] 12 is a flowchart showing an example of the flow of processing performed by the terminal 30A in the second embodiment. The communication control unit 36 ​​of the terminal 30A controls connection to the L5G network 40 via the first communication unit 38A and the first antenna 39A (step S70).

[0103] Then, the communication control unit 36 ​​of the terminal 30A determines whether Wifi information has been received (step S71). If the communication information processing unit 37 of the terminal 30 determines Yes in step S71, it stores the received Wifi information (Wifi information with local 5G as the backhaul) in the storage unit 33 (step S72). On the other hand, if the terminal 30A has not received the Wifi information, the communication information processing unit 37 determines No in step S71 and proceeds to step S73.

[0104] When the second communication unit 38B and the second antenna 39B of the terminal 30A enter the range of area A3 of the external Wi-Fi router 52, they detect the external Wi-Fi router 52 (step S73). At this time, the communication information processing unit 37 of the terminal 30A adds the SSID of the Wi-Fi radio waves of the external Wi-Fi router 52 detected in step S73 (the SSID of the external Wi-Fi router 52) to the SSID list.

[0105] The SSID list will now be described. The terminal 30 detects surrounding Wi-Fi radio waves and stores the SSIDs of the detected Wi-Fi radio waves as an SSID list. The SSID list is also called an AP (access point) list. When the communication information processing unit 37 detects the Wi-Fi radio waves of the external Wi-Fi router 52 in step S73, it adds the SSID of the external Wi-Fi router 52 to the SSID list.

[0106] The communication information processing unit 37 determines whether the local 5G network communication quality has fallen below a predetermined level (step S74). If the communication information processing unit 37 determines No in step S74, it returns the process to step S74. If the communication information processing unit 37 determines Yes in step S74, it proceeds to step S75.

[0107] The communication information processing unit 37 determines whether Wi-Fi information has been received from the L5G network 40 (step S75). For example, if the Wi-Fi information received from the L5G network 40 is stored in the storage unit 33, the communication information processing unit 37 determines Yes in step S75 and proceeds to step S76.

[0108] The communication control unit 36 ​​of the terminal 30A controls the Wifi connection based on the Wifi information received from the L5G network 40 (step S76). For example, if the Wifi information received from the L5G network 40 is "SSID_A" of the internal Wifi router 22, the communication control unit 36 ​​makes a Wifi connection to the internal Wifi router 22. Also, if the Wifi information received from the L5G network 40 is the SSID (SSID_A) of the internal Wifi router (X) 23 and the internal Wifi router (Y) 24, the communication control unit 36 ​​connects to one of the two internal Wifi routers based on the profile information.

[0109] If the Wifi information received from the L5G network 40 is not stored in the storage unit 33, the communication information processing unit 37 determines No in step S75. In this case, the communication control unit 36 ​​performs control so that the terminal 30 does not connect to Wifi (Wifi non-connection control) (step S77).

[0110] As described above, when the terminal 30 receives radio waves transmitted from a Wi-Fi device, it generates an SSID list and may connect to the Wi-Fi device that received the signal. For example, if an SSID and an encryption key are used to connect the terminal 30 and the Wi-Fi device, and the terminal 30A recognizes the encryption key of the external Wi-Fi router 52, the terminal 30 may be mistakenly connected to the external Wi-Fi router 52.

[0111] In this embodiment, the terminal 30 prohibits a Wi-Fi connection when it has not received Wi-Fi information from the L5G network 40. This makes it possible to prevent the terminal 30 from being connected to an external Wi-Fi device such as the external Wi-Fi router 52.

[0112] Third Embodiment Next, a third embodiment will be described. In the second embodiment, the terminal 30 is prohibited from connecting to any Wifi device other than the Wifi device corresponding to the SSID of the Wifi information received from the L5G network 40. In the third embodiment, if a predetermined condition is satisfied, the terminal 30 is allowed to connect to any Wifi device other than the Wifi device corresponding to the SSID of the Wifi information received from the L5G network 40.

[0113] Fig. 13 is a sequence diagram showing an example of the processing flow of the third embodiment. In the following description, the terminal 30 is assumed to be terminal 30A. The sequence diagram of Fig. 13 starts from a state where the local 5G SIM of terminal 30A is invalid or a local 5G SIM card is not inserted in terminal 30A. Terminal 30A recognizes that the local 5G SIM is invalid (step S80).

[0114] When the Wi-Fi access point function of the external Wi-Fi router 52 is turned on, the external Wi-Fi router 52 transmits Wi-Fi radio waves around the external Wi-Fi router 52 (step S81). For example, as described above, it is assumed that an SSID and an encryption key are used to connect the terminal 30 and a Wi-Fi device. When the terminal 30A recognizes the encryption key of the external Wi-Fi router 52 and detects the Wi-Fi radio waves from the external Wi-Fi router 52, the terminal 30A establishes a Wi-Fi connection with the external Wi-Fi router 52 (step S82).

[0115] When an operation to activate the local 5G SIM is performed on terminal 30A, the local 5G SIM of terminal 30A is activated (step S83). For example, when a predetermined setting to activate the local 5G SIM is performed on terminal 30A, the local 5G SIM of terminal 30A is activated. Also, when a local 5G SIM card is inserted into terminal 30A that does not have a local 5G SIM card inserted yet, and then a predetermined setting to activate the local 5G SIM is performed on terminal 30A, the SIM of terminal 30A is activated.

[0116] When the local 5G SIM becomes valid, the terminal 30A disconnects the Wifi connection with the external Wifi router 52 (step S84). Then, the terminal 30A transmits a connection request to the 5GC 41 via a network including the base station 20, and the NMS 42 acquires the connection request information (step S85). Based on the connection request, the 5GC 41 establishes a connection between the terminal 30A and the destination DNN (step S86). The processing of step S84 may be performed after the processing of steps S85 and S86.

[0117] The terminal 30A determines whether the local 5G network communication quality has fallen to a predetermined level or lower (step S87). Then, when the local 5G network communication quality of the terminal 30A has fallen to a predetermined level or lower, the terminal 30A performs Wi-Fi connection control (step S88). The Wi-Fi connection control in step S88 differs from the Wi-Fi connection control in step S65 in the second embodiment. In the third embodiment, if the local 5G SIM is valid, the terminal 30A is prohibited from reconnecting to the external Wi-Fi router 52. On the other hand, if the local 5G SIM is invalid, the terminal 30A is permitted to reconnect to the external Wi-Fi router 52.

[0118] The following describes the processing performed by the terminal 30A in the sequence diagram of Fig. 13. Fig. 14 is a flowchart showing an example of the flow of processing performed by the terminal 30A in the third embodiment. The communication information processing unit 37 determines whether the local 5G SIM is valid (step S90).

[0119] If the local 5G SIM is valid, the communication information processing unit 37 determines Yes in step S90. In this case, the communication control unit 36 ​​connects to the L5G network 40 (step S91). The communication control unit 36 ​​determines whether Wi-Fi information has been received from the NMS 42 (step S92). If Wi-Fi information has not been received, the communication control unit 36 ​​determines No in step S92 and ends the processing of the flowchart in FIG. 14.

[0120] If Wi-Fi information has been received, the communication control unit 36 ​​determines "Yes" in step S92 and proceeds to step S93. The communication information processing unit 37 stores the received Wi-Fi information in the storage unit 33 (step S93).

[0121] The communication information processing unit 37 determines whether the local 5G network communication quality has fallen below a predetermined level (step S94). If the communication information processing unit 37 determines No in step S94, it returns the process to step S94. If the communication information processing unit 37 determines Yes in step S94, it proceeds to step S95.

[0122] The communication information processing unit 37 enables a function (hereinafter referred to as a connection restriction function) that restricts Wi-Fi connection only to the Wi-Fi router indicated by the received Wi-Fi information among the connectable Wi-Fi routers (step S95). By enabling the connection restriction function, the terminal 30A is prevented from connecting to an external Wi-Fi router that does not use local 5G as a backhaul.

[0123] The communication control unit 36 ​​establishes a Wi-Fi connection based on the received Wi-Fi information (step S95). The received Wi-Fi information is the internal Wi-Fi router 22, which uses local 5G as a backhaul and is the same destination DNN as the terminal 30A. Therefore, when the terminal 30A moves from within the range of area A1 to outside the range of area A1 and within the range of area A2, communication can be continued.

[0124] As described above, in step S90, the communication information processing unit 37 determines whether the local 5G SIM is valid. If the local 5G SIM is not valid, the communication information processing unit 37 determines No in step S90 and proceeds to step S97. The communication information processing unit 37 disables the connection restriction function described above (step S97). As a result, if local 5G is not valid, the connection restriction function is disabled, and therefore the terminal 30A is allowed to connect to an external Wi-Fi router that does not use local 5G as a backhaul.

[0125] In the third embodiment, when the local 5G SIM is valid, the terminal 30A is prohibited from connecting to the external Wi-Fi router 52. On the other hand, when the local 5G SIM is invalid, the terminal 30A is permitted to connect to the external Wi-Fi router 52. This allows flexible operation of connection control when the terminal 30 connects to the external Wi-Fi router 52, depending on the state of the local 5G SIM.

[0126] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of symbols]

[0127] 10 System, 20 Base Station, 21 Site, 22 Internal Wi-Fi Router, 30 Terminal, 31 Terminal Control Unit, 32 Communication Unit, 33 Memory Unit, 34 Display Unit, 35 Operation Input Unit, 36 Communication Control Unit, 37 Communication Information Processing Unit, 38A First Communication Unit, 38B Second Communication Unit, 39A First Antenna, 39B Second Antenna, 40 L5G Network, 41 5GC, 42 NMS, 43 MEC (DNN_A), 44 MEC (DNN_B), 46 Communication Control Unit, 47 Communication Information Management Unit, 50 Carrier Network, 51 5GC, 52 External Wi-Fi Router

Claims

1. A terminal, a first communication unit that connects to a first wireless network using a first communication method; a second communication unit that connects to a second wireless network using a second communication method different from the first communication method and connects to the first wireless network using the second wireless network; a control unit that, when receiving information indicating a second communication method corresponding to the first communication method, controls communication of the second communication unit based on the received information; Equipped with the first communication unit transmits SIM information of the terminal to the first wireless network, and then receives SSID information corresponding to the transmitted SIM information from the first wireless network; The control unit controls a Wi-Fi communication connection of the second communication unit based on the received SSID information.

2. The terminal according to claim 1 , wherein the first communication unit switches to Wi-Fi communication based on the received SSID information when communication quality of the first wireless network used by the terminal falls below a predetermined level.

3. 3. The terminal according to claim 1, wherein the first communication unit transmits information indicating a destination network name together with the SIM information to the first wireless network, and then receives from the first wireless network information of one or more SSIDs corresponding to information indicating a destination network name that is the same as the destination network name.

4. the first communication unit transmits connection profile information of the terminal together with the SIM information to the first wireless network, and then receives, from the first wireless network, information on a plurality of SSIDs and a plurality of connection profile information corresponding to the transmitted SIM information; The terminal according to any one of claims 1 to 3, wherein the control unit controls the Wi-Fi communication connection of the second communication unit based on the connection profile information of the terminal that was sent from among the connection profile information corresponding to the received information of the plurality of SSIDs.

5. the connection profile information is QoS information, The terminal according to claim 4 , wherein the control unit performs control to connect to Wi-Fi communication having a QoS closest to a QoS of the terminal among the QoS information corresponding to each of the plurality of pieces of SSID information received.

6. The terminal according to any one of claims 1 to 5, wherein the control unit controls the terminal to connect only to a Wi-Fi device that transmits radio waves of an SSID represented by SSID information received from the first wireless network, among radio waves transmitted by one or more Wi-Fi devices.

7. The terminal according to any one of claims 1 to 5, wherein the control unit controls whether to connect to only a Wi-Fi device that transmits radio waves of an SSID represented by SSID information received from the first wireless network, among radio waves transmitted by one or more Wi-Fi devices, depending on whether the SIM of the terminal is valid.

8. The terminal according to claim 1 , wherein the first wireless network using the first communication method is a local 5G wireless network.

9. a storage unit that stores information indicating a first wireless network using a first communication method and information indicating a second wireless network that connects to the first wireless network using a second communication method different from the first communication method, in association with each other; a notification unit that refers to the storage unit and notifies one or more terminals belonging to the first wireless network of information indicating a second communication method corresponding to the first communication method, The notification unit receives the SIM information of the terminal from the terminal via the first wireless network, and then notifies the terminal via the first wireless network of SSID information corresponding to the received SIM information of the terminal, and causes the terminal to control the Wi-Fi communication connection based on the received SSID information.

10. A method for controlling a terminal having a first communication unit that connects to a first wireless network using a first communication method, and a second communication unit that connects to a second wireless network that uses a second communication method different from the first communication method and connects to the first wireless network using the second wireless network, After transmitting SIM information of the terminal to the first wireless network, receiving SSID information corresponding to the transmitted SIM information from the first wireless network; When information indicating a second communication method corresponding to the first communication method is received, when controlling communication of the second communication unit based on the received information, controlling a connection of Wi-Fi communication of the second communication unit based on the received information of the SSID. A method for controlling a terminal in which the terminal executes a process.

11. A control method for a management device having a storage unit that stores information indicating a first wireless network using a first communication method and information indicating a second wireless network that connects to the first wireless network using a second communication method different from the first communication method, in association with each other, the control method comprising: receiving SIM information of one or more terminals belonging to the first wireless network from the terminals via the first wireless network; When notifying one or more terminals belonging to the first wireless network of information indicating a second communication method corresponding to the first communication method with reference to the storage unit, notifying the terminals via the first wireless network of SSID information corresponding to the received SIM information of the terminals, and causing the terminals to control a Wi-Fi communication connection based on the received SSID information. A method for controlling a management device, in which the management device executes a process.

12. A terminal having a first communication unit that connects to a first wireless network using a first communication method, and a second communication unit that connects to a second wireless network using a second communication method different from the first communication method and connects to the first wireless network using the second wireless network, After transmitting SIM information of the terminal to the first wireless network, receiving SSID information corresponding to the transmitted SIM information from the first wireless network; When information indicating a second communication method corresponding to the first communication method is received, when controlling communication of the second communication unit based on the received information, controlling a connection of Wi-Fi communication of the second communication unit based on the received information of the SSID. A program that executes a process.

13. a management device having a storage unit that stores information indicating a first wireless network using a first communication method and information indicating a second wireless network that connects to the first wireless network using a second communication method different from the first communication method, in association with each other; receiving SIM information of one or more terminals belonging to the first wireless network from the terminals via the first wireless network; When notifying one or more terminals belonging to the first wireless network of information indicating a second communication method corresponding to the first communication method with reference to the storage unit, notifying the terminals via the first wireless network of SSID information corresponding to the received SIM information of the terminals, and causing the terminals to control a Wi-Fi communication connection based on the received SSID information. A program that executes a process.

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