JP6137848B2 - Network communication system - Google Patents

Description

  The present invention relates to a network connection system used in a mobile network, and more particularly to a network connection system for specifically performing priority control / band control of a connection communication band of a specific application installed in a terminal device on a mobile network. It is.

  In recent years, the performance of portable information terminals, so-called smartphones, has improved, and users can freely select and install required application software. Here, many application software is configured to connect to a specific service server placed on the Internet and receive various information from the service server to present information requested by the user on the smartphone. .

  Here, in a normal network connection configuration, IP packets from application software are transferred on a best effort basis, and the IP packets cannot be preferentially controlled so as to be selected for each application. Therefore, for example, control of giving priority to communication of application software that handles voice information such as an IP phone cannot be performed over other application software, leading to dissatisfaction with smartphone users.

  On the other hand, it is possible to set the IP address of a specific smartphone in the router in advance and preferentially control the connection from that smartphone, but in that case, not only the IP phone but also the connection of all applications of that smartphone is prioritized. Will be. In addition, although it is possible to preferentially control only connections addressed to a specific service server, for example, recent IP telephone services are provided in cooperation with a plurality of servers. It is difficult to grasp all the IP addresses and set them in the router in advance.

  That is, in the conventional mobile carrier network connection system, for example, it is difficult to respond to the desire to provide a high-quality telephone service to the user by performing priority control / bandwidth control only for IP packets of IP telephone applications, for example. .

  The present invention has been made in view of such circumstances, and even if the configuration is complicated, such as when there are a plurality of service servers providing a service for one application, the configuration is very simple. An object of the present invention is to provide a network connection system capable of providing a high quality service.

  In order to achieve the above object, according to a first main aspect of the present invention, an application having a bandwidth control router placed between a mobile network and the Internet and installed in a portable information terminal on the mobile network A network connection system in which software is connected to a service server on the Internet via the bandwidth control router and configured to transmit and receive information on a specific service provided by the service server, Is a service gateway server that is provided on the Internet and terminates a tunneling connection with the application software, and the gateway server includes an IP address of the server server included in a packet that has passed the tunneling connection. The gateway server is used to route the connection between the application software and the service server according to the service, and the bandwidth control router stores the IP address of the gateway server to be preferentially connected or subjected to bandwidth control. Referring to the table, when the destination IP address of the packet encapsulated by the tunneling connection is the IP address of the gateway server to be preferentially connected or bandwidth controlled, the packet is preferentially controlled with a preferential control or a predetermined preferential communication bandwidth. There is provided a network connection system characterized in that the data is transferred to a gateway server.

  According to one embodiment, the table stores the priority of bandwidth control or the upper limit connection bandwidth in association with the IP address of the service gateway server, and the bandwidth control router refers to the table. When the destination IP address of the packet encapsulated by the tunneling connection is the IP address of the gateway server to be preferentially connected on the table, the packet is transferred based on the predetermined priority or the upper limit bandwidth. It is preferable to control the above.

  According to a further embodiment, the network connection system further includes a service management server, and the service management server holds the table, and in this table, an application to be preferentially connected or to perform bandwidth control. The type of software or the service provided by the application software and the IP address of the service gateway server to which the application software is connected by tunneling are stored in association with each other. From the application software installed in the user terminal In response to the request from the bandwidth control router, and means for notifying the IP address of the service gateway server to which the specific application software should be connected by tunneling. It means for notifying to the table of IP address of the service gateway server should Gyosu preferably has.

  In this case, the application software generates a packet in which the packet addressed to the service server is further encapsulated to the service gateway server on the basis of the IP address of the service gateway server notified from the service management server, and tunneling connection is performed. It is desirable to have a means for transmitting.

  The service management server includes user authentication means, and the application software should be connected by tunneling based on the type of user authenticated by the user authentication means and the service type of the application software or the application software. It is desirable to notify the IP address of the service gateway server.

  According to still another embodiment, in the network connection system, the application software to be preferentially connected or the type of service provided by the application software is application software or service for voice call. preferable.

  In this case, the service management server receives the application software to be preferentially connected or band-controlled or the type of service provided by the application software from the application software, or the type of service provided by the application software. It is desirable to judge from information other than the above information.

  In this case, the information other than the application software or the service type information provided by the application software includes the domain name, host name, SIP (Session Initiation Protocol) address, MAC (Media Access Control) address of the service gateway server, It is preferably one of SIM (Subscriber Identity Module) numbers.

  According to a second main aspect of the present invention, there is provided a bandwidth control router disposed between a mobile network and the Internet, and application software installed in a portable information terminal on the mobile network is the bandwidth control router. The network connection system is connected to the service server on the Internet via the network and is configured to transmit and receive information on a specific service provided by the service server, and includes a service management server. The management server holds a bandwidth control IP address table. This bandwidth control IP address table stores the application software to be preferentially connected or bandwidth controlled or the type of service provided by the application software and the above application. It stores the IP address, domain name, host name, SIP (Session Initiation Protocol) address, MAC (Media Access Control) address, and SIM (Subscriber Identity Module) number to which the software is connected. The above table is set in response to any inquiry of IP address, domain name, host name, SIP (Session Initiation Protocol) address, MAC (Media Access Control) address, or SIM (Subscriber Identity Module) number from the bandwidth control router. Refers to that it is positive if it is stored in the table The bandwidth control router inquires the destination IP address of the communication packet received from the portable information terminal to the service management server, and the inquiry result is affirmative. Provides a network connection system characterized in that the packet is transferred to the IP address by priority control or bandwidth control.

  According to one embodiment of the present invention, there is further provided a service gateway server that is provided on the Internet and terminates a tunneling connection with the application software, and the gateway server passes a packet that has passed through the tunneling connection. Relaying the connection between the application software and the service server by routing the connection between the application software and the service server according to the IP address of the server server included in the bandwidth control IP address The IP address to which the application software stored in the table is connected is preferably the IP address of the service gateway server.

  In this case, the application software generates a packet in which the packet addressed to the service server is further encapsulated to the service gateway server on the basis of the IP address of the service gateway server notified from the service management server, and tunneling connection is performed. It is desirable to have a means for transmitting.

  According to another embodiment, in the network connection system, the service management server has a user authentication unit, based on a user type authenticated by the user authentication unit and a service type of the application. It is desirable to notify the IP address for priority control or bandwidth control.

  According to still another embodiment, the application software to be preferentially connected or the type of service provided by the application software is application software or service for voice calls.

  Other features not described in the claims of the present invention will become apparent from the following best mode for carrying out the invention and the drawings.

FIG. 1 is an overall schematic configuration diagram showing a data communication environment through a mobile network. FIG. 2 is an overall schematic configuration diagram showing a data communication environment according to an embodiment of the present invention. FIG. 3 is a schematic configuration diagram showing only the components related to the gist of the present invention and showing the configuration. FIG. 4 is a diagram showing a bandwidth control IP address table.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  In this embodiment, a case where a network connection system including a bandwidth control router is provided by a virtual mobile network operator (hereinafter referred to as “MVNO operator”) will be described as an example.

  An MVNO operator does not own a physical mobile line network called a mobile network, but borrows it from a mobile communication operator (Mobile Network Operator, hereinafter referred to as “MNO operator”). A business operator that provides communication services.

Before describing an embodiment of the present invention, for convenience of description, a data communication environment through a normal mobile network will be described first with reference to FIG.
(Data communication environment as a premise of the present invention)
In FIG. 1, a mobile network of the MNO operator is indicated by 1 in the figure, and a network connection system of the MVNO operator is indicated by 2.

  After the mobile information terminal 3 of the user who has contracted with the MVNO operator is connected to the mobile network 5 of the MNO operator via the base station 4, the MVNO operator is connected from the packet data network gateway 6 (PDNG) on the MVO operator side. Is routed to the network connection system 2 of the MVNO operator via the packet data network gateway 7 (PDNG) on the side, and then connected to various servers 10a to 10d on the Internet by the router 8 provided in the network connection system 2. It is like that. Between the packet data network gateway 6 on the MVO carrier side and the packet data network gateway 7 on the MVNO carrier side, a communication band based on a contract between the MVO carrier and the MVNO carrier, for example, 100 Mbps is secured. It is configured.

  The user's portable information terminal 3 is a so-called smartphone and has a CPU, a RAM, and a ROM (not shown). An operating system software program (hereinafter referred to as “OS”) such as iOS (product name) and Android (product name) and various application software programs (hereinafter referred to as “applications”) are installed in the ROM. And data used by applications.

  Examples of applications installed on the user's portable information terminal 3 include IP telephones and video calls in addition to Web browsers and mailers. However, users can freely install additional applications according to their own preference. Yes. These applications on the portable information terminal 3 are appropriately called up on the RAM by the CPU, developed, and executed, so that the Internet 9 is transmitted via the mobile network 5 of the MNO operator and the network connection system 2 of the MNO operator. Various processes are performed by connecting to the various servers 10a to 10d above and appropriately performing necessary data communication with the servers 10a to 10d.

  As shown in this figure, when the application of the portable information terminal 3 is executed, it is connected not only to a single server but to a plurality of servers 10a to 10d having different IP addresses. It may be. For example, in the case of an IP phone application, in addition to a VOIP authentication server 10a, a VOIP main server 10b, a SIP server / notification server 10c, it is connected to a media gateway server 10d for realizing a call with a mobile phone on a public telephone network. These have different IP addresses. In this case, the router 8 provided in the network connection system 2 appropriately transfers the packet 3 to the destination servers 10a to 10d based on the destination IP address included in the header information of the packet from the portable information terminal 3. It is like that.

  The router 8 may be provided with a bandwidth control function 12 for controlling the transfer order and transfer speed of packets passing according to the service type. The bandwidth control function is also called a QoS function, and can be roughly classified into “priority control” and “bandwidth control”. The priority control method is a method for distinguishing service types for packets flowing on the network by source IP address, destination IP address, port number for each application, etc., and assigning absolute priority for each service, The bandwidth control function is a method for assigning an upper limit of a communication bandwidth that can be used for each service.

  According to this bandwidth control, packets of services with high priority are always output with priority, or a larger communication bandwidth can be used, and packets related to services with high priority can be transferred stably. Is possible.

  In these QoS controls, it is important to accurately identify the received IP packet. In general, packets such as IP telephones need to be preferentially controlled or transferred in a wide communication band in order to maintain voice quality. In this case, the router 8 needs to specify only the IP phone IP packet from the many received packets. The identification of this IP packet is generally performed based on the IP address and transfer port number of the source and destination.

  For example, when a specific terminal device (equivalent to 3), such as an IP phone dedicated machine or a VoIP gateway, is used with a fixed IP address, the target terminal measure IP address can be specified by Packets can be reliably identified.

  However, this method cannot be used in the case where a plurality of applications having different priorities are running on the same terminal, such as the portable information terminal 3 described above. That is, if it is attempted to identify a packet using only IP address information, priority control / bandwidth control is performed even for communications that do not need to be prioritized. In addition, in an environment in which an IP address is automatically allocated to the portable information terminal 3 by DHCP, it is impossible to determine which terminal is the first by looking at the IP address.

  On the other hand, it may be considered that the service type is identified based on the IP addresses of the destination servers 10a to 10d. For example, when a packet from the portable information terminal 3 is connected to a specific VOIP main server 10b, the service type to which the target packet belongs can be reliably identified by specifying the IP address of the VOIP main server 10b. be able to. However, as described above, there are many recent applications that connect to many different servers 10a to 10d with one application as described above, and it is difficult and practically impossible to specify the addresses of all these servers. That happened.

As described above, the present invention has been made in view of such circumstances.
(Embodiment of the invention)
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In addition, about the component similar to the thing of FIG. 1, detailed description is abbreviate | omitted using the same code | symbol.

  In this embodiment, the system 2 of the MVNO operator, in addition to the bandwidth control router 8 shown in FIG. 1, the application 13, the service management server 14, and the service gateway server (SGW) corresponding to the functions of the present invention. 15.

  First, the application 13 corresponding to the function of the present invention is configured to cooperate with the service gateway server 15. That is, the portable information terminal 3 has a communication relay module 16 that generates a packet encapsulated from the application 13 addressed to the service servers 10a to 10d and further addressed to the service gateway server 15 and transmits the packet via a tunneling connection. The service gateway server 15 includes a tunneling processing unit 17 that decodes (decapsulates) a packet received from the application 13 through a tunneling connection.

  The application 13 obtains the IP address of the service gateway server 15 by making an inquiry to the service management server 14 (indicated by a dotted line in the figure). That is, the service management server 14 has a bandwidth control IP address table 19 in which an application name (service type) and an IP address of the service gateway server 15 to which this application is to be tunneled and connected are stored. In response to a request from the application 13, the application 13 is notified of the IP address of the service gateway server 15 to which the application should be connected.

  A tunneling connection (indicated by a one-dot chain line in the figure) established between the application 13 and the service gateway server 15 is subjected to priority control or bandwidth control by the bandwidth control router 8. That is, the bandwidth control router 8 inquires of the service management server 14 about the IP address included in the header information of the passing packet (indicated by a dotted line in the figure), and the IP address is registered in the bandwidth control IP address table 19. If so, the packet is preferentially transferred or a high connection bandwidth is assigned to the session. As a result, a stable and high-quality connection state is maintained between the application 13 and the service gateway server 15 via the tunneling connection (dashed line).

  Then, the service gateway server 15 receives the decrypted packet from the tunneling processing unit 17 and selectively forwards the packet to each of the destination service servers 10a to 10d based on the header information of the packet. Communication between the server and the various servers 10a to 10d.

  Hereinafter, a specific configuration for realizing such a function will be described.

  FIG. 3 is a schematic configuration diagram showing only the components necessary for realizing the present invention.

  In the portable information terminal 3, an IP address acquisition unit 21 and the relay communication module 16 are installed so as to mediate between the application 13 and an operation system (OS) 20.

  The IP address acquisition unit 21 connects to the service management server 14 via the communication protocol stack (communication interface) of the OS 20 based on an instruction from the application 13, and obtains the IP address of the connection destination service gateway server 15. To get. The IP address acquisition unit 21 may be installed as a part of the application 13 or may be installed as an add-in program for the application 13. Further, it may be prepared as an API, and the application 13 may call the IP address acquisition unit 21 and execute it appropriately.

  The relay communication module 16 gives a separate IP address (virtual network IP address) independent of the portable information terminal 3 to the application 13, and also provides an IP address for the application 13 and a destination service gateway server 15. The transmission packet is encapsulated using the IP address, and the application 3 is connected to the service gateway server 15 through a tunneling connection.

  That is, when the communication module 16 is executed, the communication module 16 is interposed between the application 13 and the local communication protocol stack group of the OS 20 installed in the portable information terminal 3, and the virtual network address for the application 13 is set. And holding the packet addressed to the virtual network from the application 13 and passing it to the service gateway server 15 through the local communication protocol stack. Therefore, the communication module 16 includes a communication protocol stack necessary for the application 13 to communicate through the virtual network, independent of the local communication protocol stack group.

  The communication module 16 is preferably prepared as an API, and the application 13 is preferably configured to call and execute the communication module 16 as appropriate.

  The service management server 14 includes an authentication unit 23 for authenticating the mobile terminal 3 or the application 13 (or the relay communication module 16), a bandwidth control IP address table 19, the mobile information terminal 3, and the bandwidth control router. The IP address providing unit 24 provides the target IP address in response to the request of 8. The service management server 14 is connected to a user information database 22 that stores user account information for authenticating by the authentication unit 23 and information on the bandwidth control router 8.

  The authentication unit 23 determines whether the application 13 and its connection destination are based on the user account information stored in the user information database 22, information on the application 13, information on the mobile terminal 3 / bandwidth control router 8, or the like. It has the function to identify and authenticate whether it is the provision object of the band control function which concerns on embodiment. If it is not a service provision target, the IP address of the service gateway server 15 is not passed. Therefore, in this case, the application 13 is connected to the various service servers 10a to 10d by a normal communication method as described in FIG. Will do.

  When the authentication in the authentication unit 23 is positive, the IP address providing unit 24 determines the mobile information terminal based on the authenticated information, that is, information specifying the application 3 and the bandwidth control router 8. 3 and the bandwidth control router 8 are passed the IP address of the service gateway server 15 to which the application 13 is to be connected.

  The bandwidth control IP table 19 is as shown in FIG. 4, and the service gateway server IP address, priority, and upper limit for the application name (or other information specifying the application) as the service type. A band and a user contract type are stored in association with each other. Thus, the IP address of the service gateway server 15 can be specified based on the application name (for example, “IP phone 1” and “media player 1” shown in FIG. 4).

  Further, as shown for “IP phone 2” in FIG. 4, two or more different service gateway servers 15 may be registered for the same application name. In such a case, an IP address to be passed to the portable information terminal is determined based on the contract type of the user authenticated by the authentication unit 23. For example, the service gateway server used between the platinum user and the normal user can be made different so that the priority control and the bandwidth control in the bandwidth control router 8 can be made different.

  Further, the table 19 may store different IP addresses of the plurality of service gateway servers 15 with priorities, or may store information on priority control or upper limit bandwidth. good.

  Next, referring to FIG. 3, the bandwidth control router 8 includes a packet processing unit 25, a bandwidth control unit 26, and an IP address acquisition unit 27 in addition to an interface and a processing unit / memory not shown. The packet processing unit 25 specifies the destination IP address based on the header information of the packet received by the bandwidth control router 8, and executes priority control and bandwidth control accordingly. The IP address acquisition unit 27 inquires of the service management server 14 about the IP packet acquired by the packet processing unit 25 and obtains information on whether or not the IP address is registered in the table 19. When the IP address is registered in the table 19, the bandwidth control unit 26 gives a priority processing or bandwidth control command for the packet addressed to the IP address to the packet processing unit 25, and the priority / Bandwidth control is executed.

  The service gateway server 15 includes a communication interface 28, a tunneling processing unit 17, and a routing unit 29. The tunneling processing unit 17 receives the packet addressed to the service gateway server 15 via the communication interface 28, decodes it by decapsulation, and passes it to the routing unit 29. The routing unit 29 transfers the packet to specific service servers 10a to 10b based on the IP address included in the header information of the decapsulated packet.

  As a result, the plurality of service servers 10a to 10d from the application 13 are all routed to the specific service gateway server 15 assigned to the application 13 by tunneling connection. Therefore, the bandwidth control router 8 identifies packets addressed to the IP address of the service gateway server 15 and performs priority control or bandwidth control, so that even if the configuration of the service server for the application 13 is complicated, it can be easily performed. High quality service can be provided.

  Further, according to the above configuration, even when a plurality of different types of applications 13 are installed on one portable information terminal 3, an IP address independent of the portable information terminal 13 is assigned to each application 13. By allocating, it is possible to connect to a different service gateway server 15 for each application, so that priority connection and bandwidth control for each application are facilitated.

  Although not described above, the tunneling processing unit 17 of the service gateway server 15 encapsulates the data returned from the various service servers 10a to 10d to the application 13, and passes through the already established tunneling connection. It has a function of transmitting to the relay communication module 16 of the portable information terminal 3. The relay communication module 16 decodes the packet received from the service gateway server 15 and passes it to the application 13.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist of the invention.

  For example, the network communication system 2 in the above embodiment is placed in the MVNO provider, but is placed in the MNO provider and provides similar services to the users of the MNO provider. It may be. In this case, the MVNO operator's network communication system 2 may not be connected to the mobile network 5 of the MNO operator.

  In the above-described embodiment, the application 13 needs to be configured to communicate with the service management server 14, but is not limited thereto. For example, even when the application 13 is not set to connect to the service management server 14 (when the application 13 is not configured to cooperate with the relay communication module 16), the bandwidth control router 8 connects to the service management server 14. As a result of the inquiry, if the connection destination IP address of the application 13 is registered in the table 19, priority connection / bandwidth control according to the present invention can be performed. In this case, the IP address may be the service server 10a to 10d instead of the service gateway server 15. Furthermore, in this case, the application 13 may be connected to the service servers 10a to 10d by tunneling, or may be a normal connection instead of a tunneling connection.

  In the above embodiment, the bandwidth control IP table 19 stores the application name and the user type in association with the IP address. However, in addition to the application name and the user type, or independently of them. For example, a service server domain name, a service server host name, a service SIP (Session Initiation Protocol) server name, and the like may be stored. In this case, the application 13 can acquire the connection destination IP address of the service gateway server 15 or the service server 10a by making an inquiry to the service management server 14 with any of the above. Here, the notification to the application 13 may be the domain name / URL address of the service gateway server 15 or the service server 10a instead of the IP address.

  In this case, the bandwidth control router 8 performs the priority control / bandwidth control by using a domain name, a server host name, a SIP (Session Initiation Protocol) address, and a MAC (Media) as identifications instead of the IP address. An access control (SIM) address, a SIM (Subscriber Identity Module) number, and a traffic pattern may be used. In this case, the bandwidth control router 8 makes an inquiry to the service management server 14, and the domain name, server host name, SIP (Session Initiation Protocol) address, MAC (Media Access Control) address, SIM (Subscriber Identity Module) number, traffic When the pattern is registered in the table, priority control / bandwidth control can be performed.

3 ... Mobile information terminal 2 ... Network connection system 4 ... Base station 5 ... Mobile network 6, 7 ... PDNG
DESCRIPTION OF SYMBOLS 8 ... Band control router 9 ... Internet 10a-10d ... Various service servers 13 ... Application software 14 ... Service management server 15 ... Service gateway server 16 ... Communication relay module 17 ... Tunneling processing unit 19 ... Band control IP address table 20 ... Mobile information Terminal OS
DESCRIPTION OF SYMBOLS 21 ... IP address acquisition part 22 ... User information database 23 ... Authentication part 24 ... IP address provision part 26 ... Bandwidth control part 27 ... Service gateway server IP address acquisition part 28 ... Communication interface 29 ... Routing part

Claims (13)

A bandwidth control router located between the mobile network and the Internet,
Application software installed in a mobile information terminal on a mobile network is connected to a service server on the Internet via the bandwidth control router, and is configured to transmit and receive information on a specific service provided by the service server A network connection system,
This network connection system
A service gateway server provided on the Internet and terminating a tunneling connection with the application software, the service gateway server according to an IP address of the service server included in a packet that has passed the tunneling connection Routing the connection between the application software and the service server, the service gateway server,
The bandwidth control router refers to a table storing IP addresses of service gateway servers to be preferentially connected or bandwidth controlled, and a destination IP address of a packet encapsulated by the tunneling connection should be preferentially connected or bandwidth controlled. A network connection system characterized in that, when the IP address is a service gateway server, the packet is transferred to the service gateway server with priority control or a predetermined priority communication band. The network connection system according to claim 1, wherein
In the table, the priority of the bandwidth control or the upper limit connection bandwidth is stored in association with the IP address of the service gateway server,
The bandwidth control router refers to the table, and when the destination IP address of the packet encapsulated by the tunneling connection is the IP address of the service gateway server to be preferentially connected on the table, the predetermined bandwidth A network connection system that controls transfer of the packet based on a priority or an upper limit bandwidth. The network connection system according to claim 1, wherein
In addition, it has a service management server,
This service management server
The table is held, and in this table, the application software to be preferentially connected or band-controlled or the type of service provided by the application software and the IP address of the service gateway server to which the application software is tunneled are associated. Are stored, and
In response to a request from the application software installed in the portable information terminal, means for notifying the IP address of the service gateway server to which the specific application software should be tunneled,
Means for notifying the table of the IP address of the service gateway server that should perform priority bandwidth control in response to a request from the bandwidth control router;
A network connection system characterized by comprising: The network connection system according to claim 3, wherein
The application software generates a packet in which a packet addressed to the service server is further encapsulated to the service gateway server based on the IP address of the service gateway server notified from the service management server, and transmits the packet through a tunneling connection. A network connection system characterized by comprising: The network connection system according to claim 3, wherein
Service management server
Having user authentication means,
The application software notifies the IP address of the service gateway server to be tunneled and connected based on the user type authenticated by the user authentication means and the application software or the service type of the application software. Network connection system. The network connection system according to claim 1, wherein
The network connection system, wherein the application software to be preferentially connected or the type of service provided by the application software is application software or a service for voice calls. The network connection system according to claim 3, wherein
The service management server receives the application software to be preferentially connected or band-controlled or the type of service provided by the application software from the application software other than the information on the type of service provided by the application software or the application software. A network connection system characterized by being determined from the information of the network. The network connection system according to claim 7, wherein
Information other than information on the application software or the type of service provided by the application software includes the domain name, host name, SIP (Session Initiation Protocol) address, MAC (Media Access Control) address, and SIM (Subscriber) of the service gateway server. A network connection system characterized by being one of the Identity Module numbers. A bandwidth control router located between the mobile network and the Internet,
Application software installed in a mobile information terminal on a mobile network is connected to a service server on the Internet via the bandwidth control router, and is configured to transmit and receive information on a specific service provided by the service server A network connection system,
Have a service management server,
This service management server
A bandwidth control IP address table is held, and this bandwidth control IP address table is the application software to be preferentially connected or bandwidth controlled, or the type of service provided by the application software, and the application software of the portable information terminal provided on the Internet. And stores the IP address of the service gateway server that relays the connection from the service server to the service server ,
Referring to the table in response to an inquiry from the application, when those stored in the table, and notifies the IP address of the corresponding service gateway server to the application, query from the bandwidth control router Means for referring to the table in response to and sending a notification of affirmative if it is stored in the table;
Having
The bandwidth control router inquires the service management server for the IP address of the service gateway server of the communication packet received from the portable information terminal, and when the inquiry result is affirmative, the bandwidth control router performs priority control or bandwidth control on the packet. A network connection system characterized by being transferred to the IP address. D network connection system smell of claim 9,
Network connection system, wherein the IP address to which the previous SL band control IP address table stored the application software is connected is the IP address of the service gateway server. The network connection system according to claim 10, wherein
The application software generates a packet in which a packet addressed to the service server is further encapsulated to the service gateway server based on the IP address of the service gateway server notified from the service management server, and transmits the packet through a tunneling connection. A network connection system characterized by comprising: The network connection system according to claim 9, wherein
Service management server
Having user authentication means,
A network connection system for notifying an IP address for priority control or bandwidth control based on a user type authenticated by the user authentication means and a service type of the application. The network connection system according to claim 9, wherein
The network connection system, wherein the application software to be preferentially connected or the type of service provided by the application software is application software or a service for voice calls.

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