JP2016213586A - Controller, service function network system, communication path control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller which sets the communication path in a service function network so as to be able to provide a service to which a user subscribes, and to provide a service for dealing with the congestion state of a terminal side network to which a terminal is connected.SOLUTION: In a controller controlling a communication path in a service function network between a terminal side network to which a terminal is connected and other network, congestion state of a plurality of first repeating devices included in the terminal side network is collected. In the service function network, the data to be communicated between the terminal and other network passes through a subscriber service function providing a service to which the user of the terminal subscribes, and a communication path passing through the communication control service function for dealing with the congestion state of the first repeating device through which the communication path in the terminal side network of the data of terminal passes.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a control device that sets a communication path of a service function network between a terminal-side network and another network.

  Network operators such as telecommunications carriers and data center service providers allow subscribers to use various optional services (load balancer, filtering, TCP optimization, etc.) unique to the network operator. An architecture and protocol for realizing a plurality of optional services, and policy control based on the optional services used by subscribers are defined in SFC (Service Function Chaining) of IETF (Internet Engineering Task Force).

  In general, optional services used by subscribers differ from one subscriber to another. In addition, a service function to be applied to the communication of the subscriber's terminal is determined based on an optional service used by the subscriber. The service function is a computer that executes software implementing an architecture and a protocol for realizing an optional service used by a subscriber. Note that this computer may be a single physical computer or a virtual computer operating on a physical computer.

  In order to allow subscribers to use optional services in various combinations, a service chaining technique is required in which data of subscriber terminals is transferred to appropriate service functions in an appropriate order. Service chaining technology is being studied by IETF and others.

  In service chaining technology, service chain (routing) information is created based on information about optional services used by terminal subscribers, and terminal data is converted into appropriate service functions based on the created service chain information. Transferred.

  Japanese Unexamined Patent Application Publication No. 2014-195252 (Patent Document 1) is a technique for reducing the congestion of a core network and a radio access network. This gazette states that “RAN has an access point, a core network is operated by a network operator, a packet gateway (P-GW) having a policy and charging execution function (PCEF) module, and P-GW A network having a separate policy and charging rule function (PCRF) module for detecting a congestion state in the RAN, the PCRF module providing one or more congestion mitigation policies to the PCEF, and the PCEF Receiving and storing one or more congestion mitigation policies, and the RAN notifying the PCEF of the congestion state, and the PCEF determines the congestion mitigation means based on the plurality of congestion mitigation means, Performing one or more congestion mitigation policies by performing. It has been described (see Abstract).

JP 2014-195252 A

  The technique described in Patent Document 1 applies the congestion mitigation policy to the PCEF based on the RAN congestion state, but is not applied to the service function network.

  In the service chaining technique described above, the service chaining information is created based only on the information related to the optional service. Therefore, the communication path is uniformly set only by the service information to which the mobile terminal user is subscribed. For this reason, the use of the service function is determined regardless of whether or not the congestion area and the congestion device are used, and the use of the packet transfer optimization and the moving image / image compression service is determined.

  Therefore, the present invention provides a control device for setting a communication path in a service function network so as to provide a service to which a user of a terminal subscribes and to provide a service corresponding to a congestion situation of a terminal-side network to which the terminal is connected. The purpose is to provide.

  In order to solve the above problems, the present invention provides a control device for controlling a communication path in a service function network between a terminal-side network to which a terminal is connected and another network, and the terminal-side network includes: The service function network includes a plurality of first relay devices, the service function network includes at least one second relay device, and a service function connected to the second relay device. A plurality of subscription service functions for providing a service to which the user subscribes and a plurality of communications for providing a service related to communication control of the terminal-side network. A control service function, the control device comprising: The congestion status of the plurality of first relay devices included in the terminal-side network is collected, and data communicated between the terminal and the other network in the service function network is transmitted by the user of the terminal. A communication path that passes through the communication control service function that corresponds to the congestion status of the first relay device that passes through a subscription service function that provides a service to subscribe to and that the communication path in the terminal-side network of the terminal data passes through. Providing data to be communicated between the terminal and the other network through the set communication path in a service function network, and providing a service to which the user of the terminal subscribes to the terminal; Communication control within the terminal side network corresponding to the congestion situation is realized. And wherein the Rukoto.

  According to the present invention, a control apparatus for setting a communication path in a service function network so as to provide a service to which a user of a terminal subscribes and to provide a service corresponding to a congestion state of a terminal-side network to which the terminal is connected. Can provide.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a block diagram of the communication system of an Example. It is explanatory drawing of the hardware constitutions of the congestion monitoring apparatus of an Example. It is explanatory drawing of the base station congestion table of an Example. It is explanatory drawing of the S-GW congestion table of an Example. It is explanatory drawing of the P-GW congestion table of an Example. It is explanatory drawing of the hardware constitutions of the service function controller of an Example. It is explanatory drawing of the congestion management table of an Example. It is explanatory drawing of the congestion statistics level definition table of an Example. It is explanatory drawing of the applicable routing determination table of an Example. It is explanatory drawing of the routing ID management table of an Example. It is explanatory drawing of the portable terminal management table of an Example. It is explanatory drawing of the portable terminal application routing management table of an Example. It is a sequence diagram of the process which determines the routing in the service function network of an Example. It is a flowchart of the applicable routing determination process which determines the routing in the service function network of an Example. It is explanatory drawing of the routing in the service function network of an Example.

  FIG. 1 is a configuration diagram of a communication system according to an embodiment.

  In this embodiment, as an example, a case where a mobile LTE packet network is connected to the service function network 40 will be described.

  The communication system according to this embodiment includes an access network 20, a core network 30, and a service function network 40. The access network 20 is connected to a core network 30, the core network 30 is connected to a service function network 40, and the service function network 40 is connected to another network 50. Therefore, the service function network 40 is a network between the core network 30 and the other network 50.

  The access network 20 includes mobile terminals 1A to 1C and base stations 2A to 2C. The portable terminals 1A to 1C are collectively referred to as the portable terminal 1, and the base stations 2A to 2C are collectively referred to as the base station 2. The mobile terminal 1 is a terminal (for example, a mobile phone, a smartphone, or a tablet terminal) used by a user, and is connected to the base station 2 wirelessly. Base station 2 is connected to core network 30.

  The core network 30 includes S-GW (Serving-Gateway) 3A to 3C, P-GW (PDN-Gateway) 4, congestion monitoring device 5, and PCRF (Policy and Charging Rule Function) 6. When S-GW3A-3C is named generically, it describes as S-GW3. The S-GWs 3A to 3C are connected to the base stations 2A to 2C and to the P-GW 4 respectively. The S-GW 3 receives the data transmitted from the base station 2, transfers the received data to the P-GW 4, receives the data transmitted from the P-GW 4, and transfers the received data to the base station 2. .

  The P-GW 4 is connected to the S-GWs 3A to 3C and to the service function network 40. The P-GW 4 receives the data transmitted from the S-GW 3, transfers the received data to the service function network 40, receives the data transmitted from the service function network 40, and receives the received data to the S-GW 3. Forward.

  In FIG. 1, the mobile LTE packet network has been described as an example of the network (terminal-side network) connected to the mobile terminal 1, but it may be another network (for example, a local area network (LAN)). Good. For this reason, the terminal-side network is not limited to the access network 20 and the core network 30. The base station 2, S-GW3, and P-GW4 included in the terminal-side network may be described as a first relay device. Further, the mobile terminal 1 does not need to be connected to the base station 2 wirelessly, and may be connected to the relay device of the terminal side network by wire or wireless.

  The congestion monitoring device 5 acquires the congestion status of the base station 2, S-GW3, and P-GW4, and monitors the congestion status of the base station 2, S-GW3, and P-GW4. The PCRF 6 is a subscription service management device that holds information (subscriber information) related to a service that the subscriber of the mobile terminal 1 is subscribed to, and further indicates a base station 2 in which the mobile terminal 1 is accommodated. Keep information.

  The service function network 40 includes Classifier 7, service function dedicated SWs (switches) 8 </ b> A and 8 </ b> B, service functions 9 </ b> A to 9 </ b> F, and a service function controller 10. When the service functions dedicated SWs 8A and 8B are collectively referred to, the service functions 9A to 9F are collectively referred to as the service function 9.

  The Classifier 7 is connected to the P-GW 4 and to the service function dedicated SW 8A. The Classifier 7 is arranged at the entrance of the service function network 40 and attaches a tag indicating a communication path in the service function network 40 of the received data.

  The service function dedicated SW 8 is connected to the service function 9, analyzes a tag attached to the received data, determines a transfer destination of the received data, and transfers the received data to the determined transfer destination. For example, when the communication path indicated by the tag included in the received data passes through the service function 9 connected to the service function dedicated SW 8, the service function dedicated SW 8 transfers the received data to the service function 9. Data is received from the service function 9 and transferred to the next service function dedicated SW 8 or another network 50. On the other hand, when the communication path indicated by the tag included in the received data does not pass through the service function 9 connected to the service function dedicated SW 8, the service function dedicated SW 8 sends the received data to the next service function dedicated SW 8 or other Transfer to network 50.

  The service function dedicated SW 8A is connected to the Classifier 7, the service functions 9A to 9C, and the service function dedicated SW 8B. The service function dedicated SW 8B is connected to the service functions 9D to 9F and the other network 50.

  The Classifier 7 and the service function dedicated SW 8 are relay devices (second relay devices) that relay data within the service function network 40. The Classifier 7 is a device that is connected to the P-GW 4 of the core network 30 and is located at the edge of the service function network 40, and may be described as an edge second relay device.

  The service function 9 is a computer that executes software that implements an architecture and a protocol for realizing a service provided to the mobile terminal 1. The computer serving as the service function 9 may be a single physical computer or a virtual computer that operates on the physical computer. Services provided by the service function 9 include filtering, firewall, TCP optimization, and video or image compression. The service function 9 executes service processing corresponding to the data passing through the service function 9 and transfers the executed data to the service function dedicated SW 8. The service function 9 includes a service function (such as filtering or firewall) that the user of the mobile terminal 1 subscribes to, and a service related to communication control of the terminal-side network of the mobile terminal 1 (such as TCP optimization). Provide a service (such as a video compression service or an image compression service) for compressing data notified between the mobile terminal 1 and another network 50 according to the communication control service function to be provided and the type of request of the mobile terminal 1 Includes data type service functions.

  The service function controller 10 is connected to the congestion monitoring device 5, the PCRF 6, the Classifier 7, and the service function dedicated SW 8. The service function controller 10 is a control device that sets a communication path in the service function network 40 for data communicated between the mobile terminal 1 and the other network 50. Specifically, the service function controller 10 collects the congestion status of the base station 2, S-GW 3, and P-GW 4 from the congestion monitoring device 5 and collects subscriber information from the PCRF 6. Then, the service function controller 10 determines the communication path of the service function 9 through which the data of the mobile terminal 1 passes based on the collected congestion state and subscriber information, and the determined communication path of the data of the mobile terminal 1 is Classifier 7. Notify

  In this embodiment, the mobile terminal 1 establishes a communication session with a computer connected to transmit data from the other network 50, and data is communicated between the mobile terminal 1 and the other network 50. The mobile terminal 1 establishes a communication session and transmits a request for transmitting data from the other network 50. When the classifier 7 receives a request transmitted from the mobile terminal 1, the classifier 7 transfers the received request to the service function controller 10, and the service function controller 10 determines a communication path in the service function network 40 of the mobile terminal 1. The classifier 7 is notified of the determined communication path. The Classifier 7 attaches a tag indicating the determined communication path to the received request and transfers it within the service function network 40. The service function dedicated SW 8 stores the IP address of the mobile terminal 1 that is the transmission source of the received request in association with the tag of the communication request.

  When the service function dedicated SW 8 receives data serving as a response corresponding to the request transmitted from the other network 50, the service function dedicated SW 8 transfers the communication response based on the tag associated with the destination IP address of the received response. It can be transferred along the communication path in the service function network 40 set in the portable terminal 1. Thereby, the service can be provided to the mobile terminal 1 based on the service of the subscriber of the mobile terminal 1 and the congestion status of the base station 2, the S-GW 3, and the P-GW 4.

  FIG. 2 is an explanatory diagram of a hardware configuration of the congestion monitoring device 5 according to the embodiment.

  The congestion monitoring device 5 includes a base station interface unit 201, an S-GW interface unit 202, a P-GW interface unit 203, a service function controller interface unit 204, a memory unit 205, and a processor 206. The base station interface unit 201, the S-GW interface unit 202, the P-GW interface unit 203, the service function controller interface unit 204, the memory unit 205, and the processor 206 are connected via a bus 210, respectively.

  The processor 206 executes a program (not shown) stored in the memory unit 205. The memory unit 205 includes a ROM that is a nonvolatile storage element and a RAM that is a volatile storage element. The ROM stores an immutable program (for example, BIOS). The RAM is a high-speed and volatile storage element such as a DRAM (Dynamic Random Access Memory), and temporarily stores a program executed by the processor 206 and data used when the program is executed.

  Note that the congestion monitoring device 5 may have an auxiliary storage device (not shown). The auxiliary storage device is a large-capacity non-volatile storage device such as a magnetic storage device (HDD) or a flash memory (SSD), and stores a program executed by the processor 206 and data used when the program is executed. . That is, the program is read from the auxiliary storage device, loaded into the memory unit 205, and executed by the processor 206.

  The base station interface unit 201 is an interface connected to the base station 2. The congestion status of the base station 2 is collected via the base station interface unit 201. The congestion state of the base station 2 may be any value as long as it is a value indicating the degree of congestion of the base station 2. For example, the congestion status of the base station 2 may be the number of accommodated calls (the number of portable terminals 1 currently accommodated) or the total throughput of the portable terminals 1 accommodated by the base station 2 Good. The base station 2 aggregates its own congestion status and transmits the aggregated congestion status to the congestion monitoring device 5 at a predetermined timing.

  The S-GW interface unit 202 is an interface connected to the S-GW 3. The congestion status of the S-GW 3 is collected via the S-GW interface unit 202. The congestion status of S-GW 3 may be any value as long as it is a value indicating the degree of congestion of S-GW 3. For example, the congestion status of S-GW3 may be the traffic volume of S-GW3 or the number of accommodated calls of S-GW3. The S-GW 3 aggregates its own congestion status and transmits the aggregated congestion status to the congestion monitoring device 5 at a predetermined timing.

  The P-GW interface unit 203 is an interface connected to the P-GW 4. The congestion status of the P-GW 4 is collected via the P-GW interface unit 203. The congestion status of the P-GW 4 may be any value as long as it is a value indicating the degree of congestion of the P-GW 4. For example, the congestion status of P-GW 4 may be the traffic volume of P-GW 4 or the number of P-GW 4 calls accommodated. The P-GW 4 aggregates its own congestion status and transmits the aggregated congestion status to the congestion monitoring device 5 at a predetermined timing.

  The service function controller interface unit 204 is an interface connected to the service function controller 10. Various congestion situations are transmitted from the service function controller interface unit 204 to the service function controller 10.

  The memory unit 205 stores a base station congestion table 207, an S-GW congestion table 208, and a P-GW congestion table 209.

  In the base station congestion table 207, the congestion status of each base station 2 is registered. Details of the base station congestion table 207 will be described with reference to FIG. In the S-GW congestion table 208, the congestion status of each S-GW 3 is registered. Details of the S-GW congestion table 208 will be described with reference to FIG. In the P-GW congestion table 209, the congestion status of the P-GW 4 is registered. Details of the P-GW congestion table 209 will be described with reference to FIG.

  The memory unit 205 may store the addresses of the base stations 2, S-GW 3, P-GW 4, and service function controller 10.

  The base station interface unit 201, the S-GW interface unit 202, the P-GW interface unit 203, and the service function controller interface unit 204 may be collectively referred to as an interface unit of the congestion monitoring device 5.

  In the present embodiment, the congestion monitoring device 5 collects the congestion statuses of the base station 2, S-GW 3 and P-GW 4 and transmits the collected congestion statuses to the service function controller 10, whereby the service function controller 10 The congestion status of the station 2, S-GW3 and P-GW4 is collected, but is not limited to this. For example, the service function controller 10 may be connected to the base station 2, S-GW 3, and P-GW 4 and directly collect the congestion status from the base station 2, S-GW 3, and P-GW 4.

  FIG. 3 is an explanatory diagram of the base station congestion table 207 of the embodiment.

  The base station congestion table 207 includes a base station identifier 301, a congestion status 302, and a congestion level 303.

  In the base station identifier 301, the identifier of the base station 2 is registered. In the congestion status 302, the congestion status collected from the base station 2 is registered. For example, in the congestion status 302, for example, the maximum value of the number of calls that can be accommodated in one base station 2 is registered as a denominator, and the number of calls accommodated in the base station 2 is registered as a numerator. In the congestion level 303, the congestion level to which the congestion status registered in the congestion status 302 belongs is registered. For example, the congestion level “A” indicates the most congested state, and the congested level “B” and “C” become lower in order.

  The congestion monitoring device 5 holds base station congestion level definition information (not shown) in which a range of congestion status values corresponding to the congestion level of the base station 2 is registered in the memory unit 205. The congestion monitoring device 5 refers to the base station congestion level definition information, identifies the congestion level to which the congestion status collected from the base station 2 belongs, and registers the identified congestion level in the congestion level 303. In the base station congestion level definition information, different ranges may be registered for each base station 2 in the range of congestion status values corresponding to the congestion level.

  FIG. 4 is an explanatory diagram of the S-GW congestion table 208 according to the embodiment.

  The S-GW congestion table 208 includes an S-GW identifier 401, a congestion state 402, and a congestion level 403.

  In the S-GW identifier 401, the identifier of S-GW3 is registered. In the congestion status 402, the congestion status collected from the S-GW 3 is registered. For example, in the congestion state 402, for example, the maximum value of the number of calls that can be accommodated in one S-GW 3 is registered as a denominator, and the number of calls accommodated in the S-GW 3 is registered as a numerator. In the congestion level 403, the congestion level to which the congestion status registered in the congestion status 402 belongs is registered. For example, the congestion level “A” indicates the most congested state, and the congested level “B” and “C” become lower in order.

  The congestion monitoring device 5 holds, in the memory unit 205, S-GW congestion level definition information (not shown) in which a range of congestion status values corresponding to the congestion level of the S-GW 3 is registered. The congestion monitoring device 5 refers to the S-GW congestion level definition information, identifies the congestion level to which the congestion status collected from the S-GW 3 belongs, and registers the identified congestion level in the congestion level 403. In the S-GW congestion level definition information, a range of congestion status values corresponding to the congestion level may be registered for each S-GW 3.

  FIG. 5 is an explanatory diagram of the P-GW congestion table 209 according to the embodiment.

  The P-GW congestion table 209 includes a P-GW identifier 501, a congestion state 502, and a congestion level 503.

  In the P-GW identifier 501, the identifier of P-GW 4 is registered. In the congestion status 502, the congestion status collected from the P-GW 4 is registered. For example, in the congestion status 502, for example, the maximum value of the number of calls that can be accommodated in one P-GW 4 is registered as a denominator, and the number of calls accommodated in the P-GW 4 is registered as a numerator. In the congestion level 503, the congestion level to which the congestion status registered in the congestion status 402 belongs is registered. For example, the congestion level “A” indicates the most congested state, and the congested level “B” and “C” become lower in order.

  The congestion monitoring device 5 holds, in the memory unit 205, P-GW congestion level definition information (not shown) in which a range of congestion status values corresponding to the congestion level of the P-GW 4 is registered. The congestion monitoring device 5 refers to the P-GW congestion level definition information, identifies the congestion level to which the congestion status collected from the P-GW 4 belongs, and registers the identified congestion level in the congestion level 503. In the P-GW congestion level definition information, a range of congestion status values corresponding to the congestion level may be registered for each P-GW 4.

  FIG. 6 is an explanatory diagram of a hardware configuration of the service function controller 10 according to the embodiment.

  The service function controller 10 includes a congestion monitoring device interface unit 601, a PCRF interface unit 602, a classifier interface unit 603, a service function dedicated SW interface unit 604, a memory unit 605, and a processor 606. The congestion monitoring device interface unit 601, the PCRF interface unit 602, the classifier interface unit 603, the service function dedicated SW interface unit 604, the memory unit 605, and the processor 606 are respectively connected via a bus 613.

  Note that the hardware configurations of the processor 606 and the memory unit 605 are the same as those in FIG.

  The congestion monitoring device interface unit 601 is an interface connected to the congestion monitoring device 5. The congestion status of the base station 2, S-GW 3, and P-GW 4 collected by the congestion monitoring device 5 is collected by the service function controller 10 via the congestion monitoring device interface unit 601.

  The PCRF interface unit 602 is an interface connected to the PCRF 6. Information related to the service to which the user of the mobile terminal 1 subscribes and the base station 2 that accommodates the mobile terminal 1 is collected by the service function controller 10 via the PCRF interface unit 602.

  The Classifier interface unit 603 is an interface connected to the Classifier 7. The service function controller 10 transmits routing information in the service function network 40 applied to the mobile terminal 1 to the Classifier 7 via the Classifier interface unit 603. Based on the routing information, Classifier 7 attaches a tag indicating routing in the service function network 40 to the header of the data transmitted from the mobile terminal 1 and transfers the data. Further, the service function controller 10 receives the request received by the Classifier 7 from the portable terminal 1 and transmitted to the service function controller 10 via the Classifier interface unit 603.

  The memory unit 605 stores a congestion management table 607, a congestion statistics level definition table 608, an applicable routing determination table 609, a routing ID management table 610, a mobile terminal management table 611, and a mobile terminal application routing management table 612.

  In the congestion management table 607, the congestion levels of the base station 2, S-GW3, and P-GW4 through which the communication path (routing) in the access network 20 and the core network 30 passes are registered. Details of the congestion management table 607 will be described with reference to FIG. In the congestion statistics level definition table 608, the congestion levels of the base station 2, S-GW3, and P-GW corresponding to the congestion statistics level are registered. Details of the congestion statistics level definition table 608 will be described with reference to FIG.

  In the applied routing determination table 609, the type of service subscribed by the user corresponding to the routing in the service function network 40 applied to the mobile terminal 1, the type of request, and the congestion statistics level are registered. Details of the application routing determination table 609 will be described with reference to FIG. In the routing ID management table 610, the base station 2, S-GW3, and P-GW4 through which routing in the access network 20 and the core network 30 passes are registered. Details of the routing ID management table 610 will be described with reference to FIG.

  In the mobile terminal management table 611, the request type of the mobile terminal 1, the type of service to which the user of the mobile terminal 1 subscribes, and the base station 2 that accommodates the mobile terminal 1 are registered. Details of the portable terminal management table 611 will be described with reference to FIG. In the mobile terminal application routing management table 612, routing in the service function network 40 applied to the mobile terminal 1 is registered. Details of the mobile terminal application routing management table 612 will be described with reference to FIG.

  FIG. 7 is an explanatory diagram of the congestion management table 607 according to the embodiment.

  The congestion management table 607 includes a routing ID 701, a base station congestion level 702, an S-GW congestion level 703, and a P-GW congestion level 704.

  In the routing ID 701, routing identifiers of the access network 20 and the core network 30 are registered. In the base station congestion level 702, the congestion level of the base station 2 through which the routing identified by the identifier registered in the routing ID 701 passes is registered. In the S-GW congestion level 703, the congestion level of the S-GW 3 through which the routing identified by the identifier registered in the routing ID 701 passes is registered. In the P-GW congestion level 704, the congestion level of the P-GW 4 through which the routing identified by the identifier registered in the routing ID 701 passes is registered.

  The congestion management table 607 is transmitted by the service function controller 10 from the routing ID management table 610 shown in FIG. 10 and the base station congestion table 207, S-GW congestion table 208, and P-GW congestion table 209 collected from the congestion monitoring device 5. Updated based on Details of the update processing of the congestion management table 607 will be described with reference to FIG.

  FIG. 8 is an explanatory diagram of the congestion statistics level definition table 608 according to the embodiment.

  In the congestion statistics level definition table 608, for example, all combinations of congestion levels that can be taken by the base station 2, S-GW3, and P-GW4, and congestion statistics levels corresponding to each combination are registered.

  The congestion statistics level definition table 608 includes a base station congestion level 801, an S-GW congestion level 802, a P-GW congestion level 803, and a congestion statistics level 804.

  In the base station congestion level 801, a congestion level that can be taken by the base station 2 is registered. In the S-GW congestion level 802, a congestion level that can be taken by the S-GW 3 is registered. In the P-GW congestion level 803, a congestion level that can be taken by the P-GW 4 is registered. In the congestion statistics level 804, the total congestion level of the base station 2, S-GW3, and P-GW4 is registered.

  The congestion statistics level definition table 608 is set in advance by the administrator. Further, the service function controller 10 has an algorithm capable of calculating a congestion statistics level based on the congestion levels of the base station 2, S-GW3, and P-GW4, and calculates the congestion statistics level based on the algorithm The service function controller 10 may not have the congestion statistics level definition table 608.

  FIG. 9 is an explanatory diagram of the application routing determination table 609 according to the embodiment.

  In the applied routing determination table 609, the communication path (within the service function network 40 corresponding to the type of service subscribed by the user of the portable terminal 1, the type of request of the portable terminal 1, and the congestion statistics level of the portable terminal 1) Routing) (Applicable routing) is registered.

  The applied routing determination table 609 includes a subscription service type 901, a request type 902, a congestion statistics level 903, and an applied routing 904.

  In the subscription service type 901, information indicating the type of service to which the user of the mobile terminal 1 subscribes is registered. The service is provided by a subscription service function. In the request type 902, information indicating the type of request transmitted from the mobile terminal 1 is registered. In the congestion statistics level 903, a congestion statistics level is registered.

  Information indicating routing applied in the service function network 40 is registered in the applied routing 904. The information indicating routing includes identification information of the service function 9 to be routed in the service function network 40 and the order of passage of the service function 9. In FIG. 9, as an example, the IP addresses of the service functions 9 to be routed are registered in the order of passage as information indicating routing, but the present invention is not limited to this. For example, a tag in which identifiers of service functions 9 to be routed are arranged in order of passage may be registered in the application routing 904.

  In the subscription service type 901, the request type 902, and the congestion statistics level 903, all combinations that the portable terminal 1 can take are registered.

  The value of each column in the applied routing determination table 609 is set in advance by the administrator. Specifically, the administrator registers application routing in the application routing determination table 609 for all combinations of service type, request type, and congestion statistics level. Note that the application routing may not be determined by the administrator, and may be determined based on a predetermined application routing algorithm or the like.

  The relationship between the subscription service type 901, the request type 902, the congestion statistics level 903, and the applicable routing 904 will be described below.

  The service indicated by the information registered in the subscription service type 901 is a service to be provided to the mobile terminal 1. For example, when a filtering service is registered in the subscription service type 901, routing in the service function network 40 must always pass through the service function 9 that provides the filtering service. In addition, when a NAT (Network Address Translation) service is registered in the subscription service type 901, routing in the service function network 40 must always go through the service function 9 that provides the NAT service.

  Further, the service function 9 that provides a service related to the traffic control of the terminal-side network is determined by the request type 902 and the congestion statistics level 903. For example, when a video is registered in the request type 902 and a congestion statistical level equal to or higher than a predetermined level is registered in the congestion statistical level 903, the service function network 40 is a service for highly compressing video (video high compression service). It goes through the service function 9 that provides On the other hand, when a video is registered in the request type 902 and a congestion statistics level smaller than a predetermined level is registered in the congestion statistics level 903, a service for compressing video in the service function network 40 (video low compression service) It goes through the service function 9 that provides Similarly, when an image is registered in the request type 902, based on the congestion statistical level registered in the congestion statistical level 903, the service function 9 that provides a service for highly compressing the image or the image is registered. Whether to go through the service function 9 that provides a service for low compression is determined. If the congestion statistics level is smaller than a predetermined level, the service function 9 that provides the compression service need not be passed.

  As a result, when the congestion statistics level is equal to or higher than a predetermined level, the mobile terminal 1 is provided with a service in response to a request for a low-rate moving image or image or the like because it passes through the service function 9 that provides a compression service. The congestion of the network 20 and the core network 30 can be reduced. When the congestion statistical level is lower than a predetermined level, the service is provided via a service function 9 that provides a compression service at a lower level than the compression service that is passed when the congestion statistical level is equal to or higher than the predetermined level, or a compression service is provided. Since the service function 9 is not routed, a service corresponding to a request for a high-rate video or image or the like can be provided as compared with a case where the congestion statistical level is a predetermined level or higher.

  FIG. 10 is an explanatory diagram of the routing ID management table 610 according to the embodiment.

  In the routing ID management table 610, the identifiers of the routing in the access network 20 and the core network 30, and the identifiers of the base station 2, S-GW3, and P-GW4 through which each routing passes are registered.

  The routing ID management table 610 includes a routing ID 1001, an accommodation base station 1002, an accommodation S-GW 1003, and an accommodation P-GW 1004.

  In the routing ID 1001, an identifier for routing in the access network 20 and the core network 30 is registered. In the accommodating base station 1002, the identifier of the base station 2 that accommodates the mobile terminal 1 is registered. The identifier of the base station 2 may be information that can identify the base station 2 such as the IP address of the base station 2 or the name of the base station 2. Note that the routing to be used for each base station 2 is determined, and the routing identifier and the identifier of the base station 2 are associated one-to-one.

  In the accommodation S-GW 1003, the identifier of the S-GW 3 through which the routing identified by the identifier registered in the routing ID 1001 passes is registered. The identifier of S-GW3 should just be information which can identify S-GW3, such as APN (Access Point Name) of S-GW3, an IP address, and the name of S-GW3.

  In the accommodation P-GW 1004, the identifier of the P-GW 4 through which the routing identified by the identifier registered in the routing ID 1001 passes is registered. The identifier of P-GW4 should just be information which can identify P-GW4, such as an APN (Access Point Name) of P-GW4, an IP address, and the name of S-GW3.

  In the routing ID management table 610, all the routings in the access network 20 and the core network 30 that can be used by the mobile terminal 1 are registered. The routing ID management table 610 may be set by an administrator, or may be acquired by the service function controller 10 from another device.

  FIG. 11 is an explanatory diagram of the mobile terminal management table 611 according to the embodiment.

  In the mobile terminal management table 611, the request type and service type of the mobile terminal 1 and the identifier of the base station 2 that accommodates the mobile terminal 1 are registered.

  The mobile terminal management table 611 includes a mobile terminal identifier 1101, a request type 1102, a subscription service type 1103, and a accommodated base station 1104.

  In the mobile terminal identifier 1101, the identifier of the mobile terminal 1 is registered. The service function controller 10 acquires the identifier of the mobile terminal 1 included in the request transmitted from the Classifier 7.

  In the request type 1102, identification information indicating the type of request of the mobile terminal 1 is registered. The type of request is, for example, the type of content requested by the mobile terminal 1. The service function controller 10 acquires the request type based on the request transmitted from the Classifier 7. The request type indicates the type of data communicated between the mobile terminal 1 and the other network 50.

  In the subscription service type 1103, information indicating a service subscribed to by the user of the mobile terminal 1 is registered. The service function controller 10 acquires information indicating the type of service of the mobile terminal 1 identified by the identifier of the mobile terminal 1 from the PCRF 6.

  In the accommodating base station 1104, the identifier of the base station 2 that accommodates the portable terminal 1 is registered. The service function controller 10 acquires the identifier of the base station 2 that accommodates the mobile terminal 1 identified by the identifier of the mobile terminal 1 from the PCRF 6.

  FIG. 12 is an explanatory diagram of the mobile terminal application routing management table 612 according to the embodiment.

  In the mobile terminal application routing management table 612, information indicating the identifier of the mobile terminal 1 and the routing in the service function network 40 applied to the mobile terminal 1 is registered.

  The mobile terminal application routing management table 612 includes a mobile terminal identifier 1201 and application routing 1202.

  In the mobile terminal identifier 1201, the identifier of the mobile terminal 1 is registered. Information indicating routing in the service function network 40 applied to the mobile terminal 1 identified by the identifier registered in the mobile terminal identifier 1201 is registered in the applied routing 1202.

  Next, the operation of the service function controller 10 will be described with reference to FIGS.

  FIG. 13 is a sequence diagram of processing for determining routing in the service function network 40 according to the embodiment.

  The communication path (routing) in the service function network 40 is such that the service function controller 10 receives the congestion information from the congestion monitoring device 5 and the service function controller 10 receives the request transmitted from the portable terminal 1 from the Classifier 7. In this case, it is determined by the service function controller 10.

  When routing in the access network 20 and the core network 30 is added, changed, or deleted, the service function controller 10 updates the routing ID management table 610 (1301). For example, when the base station 2 is newly added to the access network 20, the service function controller 10 adds a new record to the routing ID management table 610, and adds a new routing identifier to the routing ID 1001 of the new record. Register and register the identifier of the base station 2 added to the accommodation base station 1002, and the identifiers of the S-GW 3 and P-GW 4 through which the routing of the base station 2 added to the accommodation S-GW 1003 and the accommodation P-GW 4 passes. Register.

  The service function controller 10 collects congestion information from the congestion monitoring device 5 at predetermined time intervals (1302). The congestion information includes a base station congestion table 207, an S-GW congestion table 208, and a P-GW congestion table 209 held by the congestion monitoring device 5.

  When the service function controller 10 collects the congestion information in the process of step 1302, the service function controller 10 updates the congestion management table 607 based on the collected congestion information (1303).

  Specifically, the service function controller 10 refers to the routing ID management table 610, and the identifier of the base station 2 registered in the base station identifier 301 of the base station congestion table 207 included in the collected congestion information is the accommodated base station. The routing identifier registered in the routing ID 1001 of the record registered in 1002 is acquired. Then, the service function controller 10 registers the level registered in the congestion level 303 of the base station congestion table 207 in the base station congestion level 702 of the record in which the acquired routing identifier is registered in the routing ID 701 of the congestion management table 607. To do. The S-GW congestion level 703 and the P-GW congestion level 704 in the congestion management table 607 are similarly registered in the congestion level 403 in the S-GW congestion table 208 and the congestion level 503 in the P-GW congestion table 209. Register the level registered in.

  Next, the service function controller 10 calculates the congestion statistical level of routing in the access network 20 and the core network 30 of each portable terminal 1 based on the congestion management table 607 updated in the process of step 1303 (1304). .

  Specifically, the service function controller 10 acquires the identifier of the base station 2 registered in the accommodating base station 1104 of each record in the mobile terminal management table 611. Then, the service function controller 10 acquires the routing identifier registered in the routing ID 1001 of the record in which the identifier of the base station 2 acquired in the accommodating base station 1002 of the routing ID management table 610 is registered. Then, the service function controller 10 is registered in the base station congestion level 702, S-GW congestion level 703, and P-GW congestion level 704 of the record in which the routing identifier acquired in the routing ID 701 of the congestion management table 607 is registered. Get the congestion level. Then, the service function controller 10 refers to the congestion statistics level definition table 608 and calculates the congestion statistics level corresponding to the acquired congestion level as the total congestion level of the access network 20 and the core network 30 of the mobile terminal 1. To do.

  Next, the service function controller 10 refers to the applicable routing determination table 609 and performs routing in the service function network 40 corresponding to the service type and request type of each mobile terminal 1 and the congestion statistics level of each mobile terminal 1. Is determined (1305).

  Specifically, the service function controller 10 refers to the mobile terminal management table 611 and acquires the service type and request type of each mobile terminal 1. The service function controller 10 registers information indicating the acquired service type in the subscription service type 901 of the applicable routing determination table 609, registers information indicating the acquired request type in the request type 902, and Information indicating the routing registered in the applied routing 904 of the record in which the congestion statistics level calculated in the processing of step 1305 is registered in the congestion statistics level 903 is acquired, and the information indicating the acquired routing is routed in the service function network 40 Determine as. Then, the service function controller 10 registers information indicating the routing determined by each mobile terminal 1 in the mobile terminal application routing management table 612. Further details of the processing of step 1305 will be described with reference to FIG.

  Next, the service function controller 10 notifies the Classifier 7 of the applicable routing of each mobile terminal determined in the processing of Step 1305 (1306).

  As described above, the routing of each mobile terminal 1 in the service function network 40 that has already been determined can be changed according to the congestion status of the latest access network 20 and core network 30.

  Next, Classifier 7 receives the request transmitted from portable terminal 1 (1307). The Classifier 7 transmits a request notification indicating that the request has been received to the service function controller 10. The request notification includes the identifier of the mobile terminal 1 that transmitted the request and the type of request.

  When the service function controller 10 receives the request notification, the service function controller 10 sends a mobile terminal information request for requesting the identifier of the base station 2 that houses the mobile terminal 1 that transmitted the request and the type of service to which the user of the mobile terminal 1 subscribes. Transmit to the PCRF 6 (1309). The mobile terminal information request includes the identifier of the mobile terminal 1 included in the request notification.

  When the PCRF 6 receives the mobile terminal information request, the PCRF 6 identifies the identifier of the base station 2 that houses the mobile terminal 1 that is identified by the identifier of the mobile terminal 1 included in the received mobile terminal information request, and the user of the mobile terminal 1 A response including the type of service to be subscribed is transmitted to the service function controller 10 (1310).

  When receiving the response, the service function controller 10 updates the mobile terminal management table 611 based on the received response (1311).

  Specifically, the service function controller 10 adds a new record to the mobile terminal management table 611. Then, the service function controller 10 registers the identifier of the mobile terminal 1 included in the received request notification in the mobile terminal identifier 1101 of the added record, and information indicating the request type included in the received request notification in the request type 1102 Is registered, information indicating the type of service included in the received response is registered in the subscription service type 1103, and the identifier of the base station 2 accommodating the mobile terminal 1 included in the received response is registered in the accommodated base station 1104 .

  Next, the service function controller 10 determines the routing in the service function network 40 corresponding to the type of service of the mobile terminal 1 that transmitted the request, the type of the request, and the congestion statistics level (1312). Details of the processing in step 1312 will be described with reference to FIG.

  Next, the service function controller 10 notifies the Classifier 7 of the applicable routing of each mobile terminal determined in the processing of Step 1305 (1306).

  As described above, the routing in the service function network 40 can be determined for the mobile terminal 1 that has transmitted the request according to the congestion status of the routing in the access network 20 and the core network 30 of the mobile terminal 1.

  FIG. 14 is a flowchart of application routing determination processing for determining routing in the service function network 40 of the embodiment.

  First, the service function controller 10 accommodates the identifier of the mobile terminal 1, the request type, the service type, and the mobile terminal 1 in the record in which the identifier of the mobile terminal 1 to be processed is registered from the mobile terminal management table 611. The identifier of the base station 2 is acquired (1401). Here, the identifier of the portable terminal 1 to be processed is the identifier of the portable terminal 1 included in the received request notification when the service function controller 10 receives the request notification. When the service function controller 10 receives the congestion information, the identifier of one portable terminal 1 registered in the portable terminal management table 611 is selected as the identifier of the portable terminal 1 to be processed, and the identifiers of all portable terminals 1 are processed. The application routing determination process is repeatedly executed until it is selected as the identifier of the target mobile terminal 1.

  Next, the service function controller 10 refers to the routing ID management table 610 and acquires a routing ID corresponding to the identifier of the base station 2 acquired in the process of step 1401 (1402). Specifically, the service function controller 10 sets the routing ID registered in the routing ID 1001 of the record in which the identifier of the base station 2 acquired in the process of step 1401 is registered in the accommodating base station 1002 of the routing ID management table 610. get.

  Next, the service function controller 10 refers to the congestion management table 607, and acquires the congestion level of the base station 2, the congestion level of the S-GW3, and the congestion level of the P-GW4 corresponding to the routing ID in the process of step 1402. (1403). Specifically, the service function controller 10 determines the congestion level and S-GW congestion registered in the base station congestion level 702 of the record in which the routing ID acquired in step 1402 is registered in the routing ID 701 of the congestion management table 607. The congestion level registered in the level 703 and the congestion level registered in the P-GW congestion level 704 are acquired.

  Next, the service function controller 10 refers to the congestion statistics level definition table 608 and corresponds to the congestion level of the base station 2, the congestion level of the S-GW 3, and the congestion level of the P-GW 4 acquired in the processing of step 1403. The congestion statistics level is acquired (1404). Specifically, the service function controller 10 registers the congestion level of the base station 2 acquired in the process of step 1403 in the base station congestion level 801 of the congestion statistics level definition table 608 and the step 1403 in the S-GW congestion level 802. The congestion level registered in the congestion statistics level 804 of the record in which the congestion level of the S-GW3 acquired in the process of step S3 is registered and the congestion level of the P-GW4 acquired in the process of step 1403 is registered in the P-GW congestion level 803 Get statistics level.

  Next, the service function controller 10 refers to the application routing determination table 609 and applies the application type registered in the request statistics type and service type acquired in step 1401 and the congestion statistics level 903 acquired in step 1404. Routing is acquired (1405). Specifically, the service function controller 10 registers information indicating the service type acquired in step 1401 in the subscription service type 901 of the applicable routing determination table 609 and acquires it in the request type 902 in step 1401. Information indicating the type of request is registered, and information indicating the routing in the service function network 40 registered in the applied routing 904 of the record in which the congestion statistics level acquired in step 1405 is registered in the congestion statistics level 903 is acquired. To do.

  Next, the service function controller 10 applies the applied routing acquired in the process of step 1405 to the applied route 1202 of the record in which the identifier of the portable terminal 1 to be processed is registered in the portable terminal identifier 1201 of the portable terminal applied routing management table 612. Register (1406). If there is no record in which the identifier of the mobile terminal 1 to be processed is registered in the mobile terminal application routing management table 612, the service function controller 10 adds a new record to the mobile terminal application routing management table 612 and adds it. The applied routing acquired in step 1405 is registered in the applied routing 1202 of the record.

  Next, the service function controller 10 transmits the routing information including the applied routing acquired in the process of step 1405 to the Classifier 7 (1407), and ends the applied routing determination process.

  FIG. 15 is an explanatory diagram of routing in the service function network 40 of the embodiment.

  For example, in the service function network 40, routing A150 and routing B151 are set. Further, the service function 9 includes filtering A90A to filtering C90C, TCP optimization High 91A to TCP optimization Low 91C, Video compression High 92A and Video compression Low 92B. These are connected to the service function dedicated SW 8.

  Note that filtering A90A to filtering C90C are examples of a subscription service function. TCP optimization High 91A to TCP optimization Low 91C are examples of communication control service functions. Video compression High 92A and Video compression Low 92B are examples of data type service functions.

  The filtering A 90 </ b> A performs processing corresponding to the filtering service A on the passing data, and provides the filtering service A to the mobile terminal 1. Further, the filtering B 90 </ b> B performs processing corresponding to the filtering service B on the passing data, and provides the filtering service B to the mobile terminal 1. Further, the filtering C90C performs processing corresponding to the filtering service C on the passing data, and provides the filtering service C to the mobile terminal 1.

  The TCP optimization High 91 </ b> A to TCP optimization Low 91 </ b> C executes processing related to TCP optimization in the core network 30 for data passing through, and provides the mobile terminal 1 with a TCP optimization service. The TCP optimization High 91A can reduce the congestion in the access network 20 and the core network 30, the TCP optimization Middle 91B can reduce the congestion in the access network 20 and the core network 30, and the TCP optimization Low 91C can reduce the congestion in the access network 20 and the access network 20. Congestion in the core network 30 can be reduced. Therefore, for example, when the TCP optimization High 91A is the first communication control service function, the TCP optimization Middle 91B and the TCP optimization Low 91C are the second communication control service function.

  Different service functions 9 (TCP optimization High 91A to TCP optimization C91C) are prepared according to three congestion reduction amounts of the same TCP optimization processing. For example, one TCP optimization service function can execute three processes corresponding to three congestion reduction amounts, and the service function executes a process corresponding to the congestion statistics level of the passing data. May be. When one service function executes each process according to the reduction amount, the processing load of the service function increases. As shown in FIG. 15, three service functions 9 corresponding to the three congestion reduction amounts are prepared, and each service function 9 executes the processing corresponding to the congestion reduction amount corresponding to itself. 9 processing load can be reduced.

  In addition, the Video compression High 92A and the Video compression Low 92B perform a compression process on the data (video data) passing therethrough and provide a video compression service to the mobile terminal. The Video compression High 92A has a higher compression rate than the Video compression Low 92B. For this reason, the Video compression High 92A is a first data type service function, and the Video compression Low 92B is a second data type service function.

  The routing A150 is set at the time of receiving the request A transmitted from the mobile terminal 1A, for example. The request type of request A is video, the type of service subscribed by the user of the mobile terminal 1A is filtering service A, and the access network 20 corresponding to the base station 2A that accommodates the mobile terminal 1A and the core network 30 It is assumed that the congestion statistics level of routing is the congestion statistics level A.

  In this case, since the user of the portable terminal 1A subscribes to the filtering service A, the routing A 150 passes through the filtering A 90A that provides the filtering service A. Also, the routing A150 is routed through the TCP optimization High 91A because the congestion statistics level of routing in the access network 20 and the core network 30 corresponding to the base station 2A accommodating the portable terminal 1A is the congestion statistics level A. To do. In the routing A 150, the request type of the request A is video, and the congestion statistics level of routing in the access network 20 and the core network 30 corresponding to the base station 2A accommodating the portable terminal 1A is the congestion statistics level A. , Via Video compression High 92A.

  When the congestion statistics level of routing in the access network 20 and the core network 30 corresponding to the base station 2A that accommodates the portable terminal 1A is smaller than the congestion statistics level A, it passes through the Video compression Low 92B.

  The routing B151 is set when a request B transmitted from the mobile terminal 1B is received, for example. The request type of the request B is an image, and the type of service to which the user of the mobile terminal 1B subscribes is the filtering service B, and the access network 20 and the core network 30 corresponding to the base station 2B that accommodates the mobile terminal 1B. The congestion statistics level of routing is assumed to be congestion statistics level B.

  In this case, since the user of the portable terminal 1B subscribes to the filtering service B, the routing B 151 passes through the filtering B 90B that provides the filtering service B. Further, the routing B151 is routed through the TCP optimization Middle 91B because the congestion statistics level of routing in the access network 20 and the core network 30 corresponding to the base station 2B accommodating the mobile terminal 1B is the congestion statistics level B. To do. Further, since the request type of the request B is an image, the routing B 151 does not pass through the Video compression High 92A and the Video compression Low 92B.

  As described above, in this embodiment, in the service function network 40, data communicated between the terminal (the mobile terminal 1) and another network (the other network 50) is a service to which the user of the terminal subscribes. Communication control service corresponding to the congestion status of the first relay device (base station 2, S-GW3, and P-GW4) that passes the provided subscription service function and passes through the communication path in the terminal-side network of terminal data Set a communication path that passes through the function, and provide the terminal user with a service that the user of the terminal subscribes through the communication path in the service function network in which data to be communicated between the terminal and other networks is set Thus, communication control in the terminal side network corresponding to the congestion situation is realized. Accordingly, it is possible to set a communication path in the service function network so that a service to which a user of the terminal subscribes can be provided and a service corresponding to a congestion state of the terminal-side network to which the terminal is connected can be provided.

  Further, in this embodiment, the control device, when the congestion status of the first relay device through which the communication path in the terminal-side network for terminal data passes is more congested than the predetermined congestion status, A communication path is set so that data communicated between the two passes through the first communication control service function. Thereby, the congestion of the terminal side network can be reduced according to the congestion state of the terminal side network.

  Further, in this embodiment, the control device is configured such that the congestion status of the first relay device through which the communication path of the terminal data in the terminal-side network passes is more congested than the predetermined congestion status, and the terminal and the other network If the data communicated between them is of a predetermined type, the communication path is set so as to pass through the first data type service function having a high compression rate corresponding to the type. As a result, when the data communicated between the terminal and another network is of a predetermined type and the congestion status of the terminal-side network is high, data with a high compression rate is communicated. Can be reduced.

  In the present embodiment, the control device also performs communication control corresponding to a comprehensive congestion state (congestion statistics level) of a communication path through which data communicated between the terminal and another network passes in the terminal-side network. Sets the communication path in the service function network that passes through the service function. For this reason, the control device does not handle the congestion status of the plurality of first relay devices on the communication path through which the data communicated between the terminal and another network passes in the terminal-side network. Can be reduced.

  Also, the control device collects the congestion status of the first relay device from the congestion monitoring device, collects the service subscribed by the user of the terminal from the subscription service management device, and receives the request for the other network transmitted by the terminal The request transferred by the second relay device (Classifier 7) is received, and the type of data communicated between the terminal and another network is specified based on the type of the received request. Thereby, the control device can acquire the congestion status of the first relay device, the service subscribed by the user of the terminal, and the type of request.

  When a request is received from the edge second relay device, a communication path in the service function network for data communicated between the terminal that transmitted the request and another network is set. As a result, the communication path in the service function network 40 can be set before the data corresponding to the request is transmitted from the other network 50. When the data corresponding to the request arrives from the other network 50, the received data is immediately It can be transferred along the communication path.

  When the congestion status of the first relay device is collected from the congestion monitoring device, the communication path in the already set service function network is set again based on the collected congestion status of the first relay device. As a result, it is possible to set a communication path in the service function network that is optimal for the latest congestion status of the first relay device.

  The control device notifies the edge second relay device of a communication path in the service function network of data communicated between the terminal and another network. Thereby, a communication path can be set in the service function network.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Also, a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of a certain embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit.

  In addition, each of the above-described configurations, functions, and the like may be realized by software by the processor interpreting and executing a program that realizes each function.

  Information such as programs, tables, and files for realizing each function is stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), an IC (Integrated Circuit) card, an SD card, a DVD (Digital Versatile Disc), etc. Can be placed on any recording medium.

  Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

1 mobile terminal 2 base station 3 S-GW
4 P-GW
5 Congestion monitoring device 6 PCRF
7 Classifier
8 Service function SW
9 Service Function 10 Service Function Controller 20 Access Network 30 Core Network 40 Service Function Network 50 Other Network

Claims (15)

A control device that controls a communication path in a service function network between a terminal-side network to which a terminal is connected and another network,
The terminal-side network includes a plurality of first relay devices,
The service function network includes at least one second relay device and a service function connected to the second relay device;
The service function is
A predetermined process is performed on data passing through the terminal, and a predetermined service is provided to the terminal.
A plurality of subscription service functions for providing services to which the user subscribes, and a plurality of communication control service functions for providing services related to communication control of the terminal-side network,
The controller is
Collecting congestion status of the plurality of first relay devices included in the terminal-side network;
In the service function network, data communicated between the terminal and the other network passes through a subscription service function that provides a service to which a user of the terminal subscribes, and the terminal side of the terminal data Setting a communication path that passes through the communication control service function corresponding to the congestion status of the first relay device through which the communication path in the network passes;
The data communicated between the terminal and the other network passes through the set communication path in the service function network to provide the terminal with a service to which the user of the terminal subscribes, and the congestion situation A control device that realizes communication control in the terminal-side network corresponding to the above. The control device according to claim 1,
The communication control service function includes a first communication control service function and a second communication control service function,
The service related to communication control of the terminal side network provided by the first communication control service function reduces congestion of the terminal side network than the service related to communication control of the terminal side network provided by the second communication control service function. It is what
The control device communicates between the terminal and the other network when the first relay device through which a communication path in the terminal-side network for the data of the terminal passes is congested from a predetermined situation A control apparatus, wherein the communication path is set so that data passes through the first communication control service function. The control device according to claim 1,
The service function includes a data type service function that provides a service for compressing a predetermined type of data communicated between the terminal and the other network,
Each data type service function includes a first data type service function and a second data type service function,
The service provided by the first data type service function has a higher data compression rate than the service provided by the second data type service function,
The control device is configured such that a congestion state of the first relay device through which a communication path in the terminal-side network of the terminal data passes is more congested than a predetermined congestion state, and between the terminal and the other network. When the data to be communicated is of a predetermined type, the control path is configured to set the communication path so as to pass through the first data type service function corresponding to the type. The control device according to claim 1,
The data of the terminal passes through the plurality of first relay devices through a communication path in the terminal-side network,
The congestion status of the first relay device on the communication path through which the data communicated between the terminal and the other network passes in the terminal-side network from the collected congestion status of the plurality of first relay devices. Identify
Based on the identified congestion status, calculate the overall congestion status of the communication path through which data communicated between the terminal and the other network passes in the terminal-side network,
A control device that sets a communication path in the service function network that passes through the communication control service function corresponding to the calculated total congestion state. The control device according to claim 3,
The terminal-side network includes a congestion monitoring device that acquires a congestion status of the plurality of first relay devices, and a subscription service management device that manages a service to which a user of the terminal subscribes,
The second relay device includes an edge second relay device connected to the first relay device of the terminal-side network,
The controller is
Collecting the congestion status of the first relay device from the congestion monitoring device;
Collecting services that the user of the terminal subscribes from the subscription service management device,
The terminal receives a request transferred by the edge second relay device that has received the request for the other network transmitted by the terminal, and communicates between the terminal and the other network based on the type of the received request A control device that identifies the type of data to be processed. The control device according to claim 5,
When the request is received from the edge second relay device, a communication path in the service function network for data communicated between the terminal that transmitted the request and the other network is set. Control device. The control device according to claim 5,
When the congestion status of the first relay device is collected from the congestion monitoring device, the communication path in the already set service function network is set again based on the collected congestion status of the first relay device. Control device characterized. The control device according to claim 1,
The second relay device includes an edge second relay device connected to the first relay device of the terminal-side network,
A control device that notifies the edge second relay device of a communication path in the service function network of data communicated between the terminal and the other network. A service function network system between a terminal side network to which a terminal is connected and another network,
The terminal-side network includes a plurality of first relay devices,
The service function network system includes at least one second relay device that relays data in a service function network, a service function connected to the second relay device, and a control that controls a communication path in the service function network. Equipped with equipment,
The service function is
A predetermined process is performed on data passing through the terminal, and a predetermined service is provided to the terminal.
A plurality of subscription service functions for providing services to which the user subscribes, and a plurality of communication control service functions for providing services related to communication control of the terminal-side network,
The controller is
Collecting congestion status of the plurality of first relay devices included in the terminal-side network;
In the service function network, data communicated between the terminal and the other network passes through a subscription service function that provides a service to which a user of the terminal subscribes, and the terminal-side network of the data of the terminal A communication path that passes through the communication control service function corresponding to the congestion status of the first relay device through which the communication path passes,
Data communicated between the terminal and the other network passes through the set communication path in a service network to provide a service to which the user of the terminal subscribes to the terminal. A service function network system for realizing communication control in the corresponding terminal-side network. A service function network system according to claim 9,
The communication control service function includes a first communication control service function and a second communication control service function,
The service related to communication control of the terminal side network provided by the first communication control service function reduces congestion of the terminal side network than the service related to communication control of the terminal side network provided by the second communication control service function. It is what
The control device communicates between the terminal and the other network when the first relay device through which a communication path in the terminal-side network for the data of the terminal passes is congested from a predetermined situation A service function network system, wherein the communication path is set so that data passes through the first communication control service function. The service function network system according to claim 10,
The service function includes a data type service function that provides a service for compressing a predetermined type of data communicated between the terminal and the other network,
Each data type service function includes a first data type service function and a second data type service function,
The service provided by the first data type service function has a higher data compression rate than the service provided by the second data type service function,
The control device is configured such that a congestion state of the first relay device through which a communication path in the terminal-side network of the terminal data passes is more congested than a predetermined congestion state, and between the terminal and the other network. A service function network system, wherein, when data to be communicated is of a predetermined type, the communication path is set so as to pass through the first data type service function corresponding to the type. A service function network system according to claim 9,
The data of the terminal passes through the plurality of first relay devices through a communication path in the terminal-side network,
The controller is
The congestion status of the first relay device on the communication path through which the data communicated between the terminal and the other network passes in the terminal-side network from the collected congestion status of the plurality of first relay devices. Identify
Based on the identified congestion status, calculate the overall congestion status of the communication path through which data communicated between the terminal and the other network passes in the terminal-side network,
A service function network system configured to set a communication path in the service function network that passes through the communication control service function corresponding to the calculated total congestion state. The service function network system according to claim 11,
The terminal-side network includes a congestion monitoring device that acquires a congestion status of the plurality of first relay devices, and a subscription service management device that manages a service to which a user of the terminal subscribes,
The second relay device includes an edge second relay device connected to the first relay device of the terminal-side network,
The controller is
Collecting the congestion status of the first relay device from the congestion monitoring device;
Collecting services that the user of the terminal subscribes from the subscription service management device,
The terminal receives a request transferred by the edge second relay device that has received the request for the other network transmitted by the terminal, and communicates between the terminal and the other network based on the type of the received request A service function network system characterized by specifying the type of data to be processed. A service function network system according to claim 9,
The second relay device includes an edge second relay device connected to the first relay device of the terminal-side network,
The control device notifies the edge second relay device of a communication path in the service function network of data communicated between the terminal and the other network. A communication path control method in a control device for controlling a communication path in a service function network between a terminal side network to which a terminal is connected and another network,
The control device includes a processor for executing a program and a memory connected to the processor,
The terminal-side network includes a plurality of first relay devices,
The service function network includes at least one second relay device and a service function connected to the second relay device;
The service function is
A predetermined process is performed on data passing through the terminal, and a predetermined service is provided to the terminal.
A plurality of subscription service functions for providing services to which the user subscribes, and a plurality of communication control service functions for providing services related to communication control of the terminal-side network,
The communication path control method includes:
The processor collects congestion status of the plurality of first relay devices included in the terminal-side network;
In the service function network, the processor communicates data between the terminal and the other network through a subscription service function that provides a service to which a user of the terminal subscribes, and the data of the terminal A communication path that passes through the communication control service function corresponding to the congestion status of the first relay device through which the communication path in the terminal-side network passes,
The processor provides the terminal with a service to which a user of the terminal subscribes when data communicated between the terminal and the other network passes through the set communication path in a service function network. A communication path control method for realizing communication control in the terminal side network corresponding to the congestion situation.

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