JP7008641B2 - Gateway selection method and communication system - Google Patents

Description

The present invention relates to a gateway selection method and a communication system.

The following Non-Patent Document 1 describes that the AAA (Authentication Authorization Accounting) server selects PGW (Packet Data Network Gateway) based on the UE (User Equipment) for which access has been requested.

3GPP TS 23.402 V14.2.0 (2016-12)

However, according to the above-mentioned prior art, there is only a means for selecting a predetermined PGW (gateway device). Therefore, for example, there is a problem that the UE (communication terminal) cannot access the PGW corresponding to the terminal information related to the UE.

Therefore, in order to solve the above problems, it is an object of the present invention to select a gateway device corresponding to terminal information about the communication terminal for the communication terminal.

In order to solve the above-mentioned problems, the gateway selection method according to one aspect of the present invention is executed by a communication terminal including a communication terminal capable of using a plurality of communication services by non-cellular communication and a plurality of gateway devices. , A gateway selection method for selecting a gateway device that performs communication for a communication service used by a communication terminal, which is a specific step for specifying terminal information indicating the type or use of the communication terminal, terminal information, and the terminal information. It includes a selection step of selecting a gateway device corresponding to the terminal information specified in the specific step by referring to the correspondence information associated with the gateway device that performs communication according to the above.

According to such a gateway selection method, terminal information indicating the type or use of the communication terminal is specified, and the gateway device corresponding to the specified terminal information is selected. That is, it is possible to select a gateway device corresponding to the terminal information about the communication terminal for the communication terminal.

According to the present invention, it is possible to select a gateway device corresponding to terminal information about the communication terminal for the communication terminal.

It is a figure which shows the system structure of the communication system which concerns on embodiment of this invention. It is a figure which shows the functional block diagram of AAA server 3. It is a figure which shows the functional block diagram of HSS4. It is a figure which shows the table example of the NAI information stored in HSS4. It is a figure which shows the functional block diagram of MME5A. It is a figure which shows the table example of the access destination information stored in MME5A. It is a figure explaining the hardware configuration of AAA server 3. It is a figure explaining the hardware configuration of HSS4. It is a figure explaining the hardware configuration of MME5A. It is a sequence diagram which shows the access process at the time of the untrusted non-3GPP access. It is a sequence diagram which shows the access process at the time of the trusted non-3GPP access.

Hereinafter, the gateway selection method and the embodiment of the communication system will be described in detail together with the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted. Further, the embodiments in the following description are specific examples of the present invention, and are not limited to these embodiments unless there is a description that the present invention is particularly limited.

FIG. 1 is a system configuration diagram of a communication system 9 according to an embodiment of the present invention. The communication system 9 includes UE 1, ePDG (evolved Packet Data Gateway) 2, AAA server 3, HSS (Home Subscriber Server) 4, MME (Mobility Management Entity) 5, PGW 6, SGW (Serving Gateway) 7, and eNB (evolved Node B). ) 8 is included.

As shown in FIG. 1, the communication system 9 is a system that provides communication services by cellular communication (3GPP access, 3GPP access) and non-cellular communication (non-3GPP access, non-3GPP access). Here, cellular communication is communication by a wireless method in which a base station is installed by dividing an area into a cell shape and the frequency is effectively used. Specifically, 3G (3rd Generation) communication and 4G (4th) communication. Generation) communication, LTE (Long Term Evolution) communication and the like can be mentioned. On the other hand, the non-cellular communication is a communication other than the cellular communication, and specific examples thereof include wireless LAN (Local Area Network) communication and Bluetooth (registered trademark) communication. The communication service is a service using communication, such as video distribution and vehicle-to-vehicle communication. The required network requirements, etc. are different for each communication service. Please refer to the above-mentioned Non-Patent Document 1 for the above-mentioned cellular communication and non-cellular communication, and the details of each node for realizing the above-mentioned communication. The contents described in Non-Patent Document 1 will be omitted as appropriate in the present embodiment.

Further, the cellular communication provided by the communication system 9 is realized by an architecture (hereinafter referred to as "DECOR method") based on a dedicated core network (Dedicated Core Network; hereinafter referred to as "DECOR") for a specific application. For details of the DECOR method, refer to Non-Patent Document 2 below. The contents described in Non-Patent Document 2 will be omitted as appropriate in the present embodiment.
Non-Patent Document 2: 3GPP TS 23.401 V13.7.0 (2016-06)

In the DECOR method, when a UE performing cellular communication performs cellular communication, the default MME is first accessed, and the UE is set to DECOR according to "UE Usage type" which is terminal information (terminal identifier) indicating the type and usage of the UE. Is sorted. Here, the conventional DECOR method is intended for UEs that perform cellular communication, and UEs that perform non-cellular communication cannot utilize the DECOR method. The communication system 9 of the present embodiment has a functional configuration described later so that even a UE performing non-cellular communication can distribute UEs based on the DECOR method.

Further, in the communication system 9, as shown in FIG. 1, a plurality of slices (slice 1, slice 2 and slice 3) are constructed. A slice is a virtual network or service network that is logically generated on the network infrastructure by virtually separating the resources of the link and node of the network device and combining the separated resources, and the slices separate the resources. And do not interfere with each other. Slice 1 is housed by MME5B and reserves resources for ePDG2A, PGW6A and SGW7A. Slice 2 is housed by MME5C and reserves resources for ePDG2B, PGW6B and SGW7B, and slice 3 is accessible only from the "trusted non-3GPP access" described below and reserves resources for PGW6C. ing.

Subsequently, each node constituting the communication system 9 will be described.

The UE 1 (communication terminal) is a computer terminal such as a smartphone or an electronic device that performs non-cellular communication, and can communicate with the communication system 9 wirelessly or the like. The UE 1 can use a plurality of communication services by non-cellular communication. The UE 1 may be able to use a plurality of communication services by further cellular communication. The UE 1 stores identification information of its own terminal such as NAI (Network Access Identity, terminal ID), and transmits the identification information to the ePDG 2 or AAA server 3. When the UE 1 uses "untrusted non-3GPP access" among the non-cellular communication, the UE 1 communicates with the AAA server 3 via the ePDG2. Further, when the UE 1 uses the "trusted non-3GPP access" of the non-cellular communication, the UE 1 communicates with the AAA server 3 without going through the ePDG2.

The ePDG2 (gateway device) is a part that transmits user data as a gateway device between the core network and a wireless LAN or the like, and is a gateway device that communicates with the UE 1. In the communication system 9 shown in FIG. 1, the slice 1 contains the “ePDG1” and the slice 2 contains the “ePDG2”. In the present embodiment, a plurality of "ePDG1", "ePDG2" and the like are collectively referred to as ePDG2 as appropriate.

The AAA server 3 is a server device that controls access to the UE 1 that is accessed via a wireless LAN or the like.

The HSS4 (user information database) is a server that manages user information (subscriber information) including contract information, authentication information, communication service information, terminal type information, and territory information of communication terminals such as UE1 in the database.

The MME5 (mobile control device) is a server device that performs mobile control in mobile communication such as cellular communication. The communication system 9 shown in FIG. 1 includes a plurality of MMEs 5 that perform movement control in cellular communication (mobile communication). Of the plurality of MMEs 5, the MME5 that is first accessed when the UE (mobile terminal) that performs cellular communication performs cellular communication is the "default MME" (= MME5A, default mobile control device), and then the UE distributes it. The MME5 accommodating the DECOR to be used is the "dedicated MME1" (= MME5B) and the "dedicated MME2" (= MME5C). In the present embodiment, a plurality of "default MME", "dedicated MME1", "dedicated MME2" and the like are collectively referred to as MME5 as appropriate.

The PGW 6 (gateway device) is a gateway between a PDN (Packet data network, access destination) and a core network, and transmits user data (packet data). That is, the PGW 6 is a gateway device for packet transfer.

The SGW 7 is a gateway device that serves as a base point of a cellular communication network such as an eNB 8 and relays user data to and from the PGW 6.

The eNB 8 is a so-called base station.

Subsequently, the details of the function of the AAA server 3 will be described. FIG. 2 is a functional block diagram of the AAA server 3. As shown in FIG. 2, the AAA server 3 includes a specific unit 30 and a selection unit 31.

The specifying unit 30 specifies a "UE Usage type" (terminal information) indicating the type or usage of the UE 1. Specifically, the specific unit 30 receives the NAI of the UE 1 together with the access request from the UE 1 or the ePDG 2. Next, the specifying unit 30 collates the user information with respect to the HSS 4, and transmits the NAI of the UE 1 to the HSS 4. Next, the specifying unit 30 identifies the "UE Usage type" of the UE 1 by receiving the "UE Usage type" of the UE 1 which is the collation result as a response of the user information collation. The specific unit 30 outputs the specified "UE Usage type" to the selection unit 31.

The selection unit 31 selects a combination of PGW6 or ePDG2 and PGW6 corresponding to the "UE Usage type" specified by the specific unit 30. Specifically, the selection unit 31 confirms the access destination to the MME 5A, and transmits the "UE Usage type" input from the specific unit 30 to the MME 5A. Next, the selection unit 31 receives the ID (identification information) of the PGW 6 which is the confirmation result as a response of the access destination confirmation. Next, the selection unit 31 performs name resolution for the DNS (Domain Name System) (not shown) and transmits the received PGW 6 ID to the DNS. It is assumed that the DNS has a general DNS function (name resolution function, etc.). Next, the selection unit 31 receives the PGW6 address (network address), which is the resolution result, or the combination of the ePDG2 address and the PGW6 address as a response to the name resolution, thereby combining the PGW6 or the ePDG2 with the PGW6. Select (combination of the gateway device that communicates with UE1 and the gateway device that transfers packets). The selection unit 31 outputs the received PGW6 address or the combination of the ePDG2 address and the PGW6 address to other nodes or devices such as the ePDG2 and the UE1.

Subsequently, the details of the functions of the HSS 4 will be described. FIG. 3 is a functional block diagram of the HSS 4. As shown in FIG. 3, the HSS 4 includes a terminal information storage unit 40.

The terminal information storage unit 40 stores user information about the user of UE1 which is stored by a general HSS. The terminal information storage unit 40 further stores the "UE Usage type" of the UE 1. Specifically, the terminal information storage unit 40 further stores NAI information in which NAI and "UE Usage type" are associated with each other. FIG. 4 is a diagram showing an example of a table of NAI information stored in the terminal information storage unit 40. In the NAI information table example shown in FIG. 4, for example, the character string "AAA" which is NAI and the character string "XXX" which is "UE Usage type" are stored in association with each other. When the user information collation is performed from the specific unit 30, the terminal information storage unit 40 refers to the stored NAI information and extracts the "UE Usage type" associated with the NAI of the UE 1 received together with the user information collation. Then, the "UE Usage type" extracted as the collation result is transmitted to the specific unit 30. That is, the specifying unit 30 specifies the terminal information with reference to the NAI information stored in the terminal information storage unit 40 (HSS4).

Subsequently, the details of the function of MME5A will be described. FIG. 5 is a functional block diagram of the MME 5A. As shown in FIG. 5, the MME 5A includes an access destination information storage unit 50.

The access destination information storage unit 50 includes a "UE Usage type", an MME-GI (MME Group ID) which is a group ID of the MME 5 that performs cellular communication according to the "UE Usage type", and the "UE Usage type". The access destination information (correspondence information) associated with the ID of the PGW 6 that performs non-cellular communication according to the above is stored. FIG. 6 is a diagram showing an example of a table of access destination information stored in the access destination information storage unit 50. In the example of the access destination information table shown in FIG. 6, for example, the character string "XXX" which is "UE Usage type", the character string "1" which is MME-GI, and the character string "PGW1" which is the ID of PGW6. And are stored in association with each other. The MME-GI is used when the UE performs cellular communication, and although the description thereof is omitted in the present embodiment, the information for cellular communication (MME-GI) and the information for cellular communication (MME-GI) are used as in the example of this table. By storing the information for non-cellular communication (ID of PGW6) in combination, it is possible to realize the communication system 9 in one system without distinguishing between the UE for cellular communication and the UE for non-cellular communication. can. When the access destination confirmation is performed from the selection unit 31, the access destination information storage unit 50 refers to the stored access destination information, and the PGW 6 associated with the "UE Usage type" of the UE 1 received together with the access destination confirmation. ID is extracted, and the ID of PGW6 extracted as a confirmation result is transmitted to the selection unit 31. That is, the selection unit 31 selects the combination of PGW6 or ePDG2 and PGW6 with reference to the access destination information stored in the access destination information storage unit 50 (MME5A).

Subsequently, the hardware configurations of the AAA server 3, HSS4 and MME5A will be described.

The functional block diagram shown in FIGS. 2, 3 and 5 shows a block of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly by two or more physically and / or logically separated devices. It may be accessed by a physical device (for example, wired and / or wireless), and may be realized by these a plurality of devices.

For example, the AAA server 3 may function as a computer. FIG. 7 is a diagram showing an example of the hardware configuration of the AAA server 3. The AAA server 3 described above may be physically configured as a computer device including a processor 3001, a memory 3002, a storage 3003, a communication device 3004, an input device 3005, an output device 3006, a bus 3007, and the like.

In the following description, the word "device" can be read as a circuit, a device, a unit, or the like. The hardware configuration of the AAA server 3 may be configured to include one or more of the devices shown in FIG. 7, or may be configured not to include some of the devices.

For each function in the AAA server 3, the processor 3001 performs an operation by loading predetermined software (program) on the hardware such as the processor 3001 and the memory 3002, and the communication device 3004 communicates with the memory 3002 and the storage 3003. It is realized by controlling the reading and / or writing of the data in.

Processor 3001 operates, for example, an operating system to control the entire computer. The processor 3001 may be composed of a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the above-mentioned specific unit 30 and selection unit 31 may be realized by the processor 3001.

Further, the processor 3001 reads a program (program code), a software module, and data from the storage 3003 and / or the communication device 3004 into the memory 3002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the present embodiment is used. For example, the above-mentioned specific unit 30 and selection unit 31 and the like may be realized by a control program stored in the memory 3002 and operated by the processor 3001, and may be similarly realized for other functional blocks. Although it has been described that the various processes described above are executed by one processor 3001, they may be executed simultaneously or sequentially by two or more processors 3001. Processor 3001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 3002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 3002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 3002 can store a program (program code), a software module, and the like that can be executed to implement the paging method according to the present embodiment.

The storage 3003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 3003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 3002 and / or storage 3003. For example, the above-mentioned specific unit 30 and selection unit 31 may be realized by the storage 3003.

The communication device 3004 is hardware (transmission / reception device) for communicating between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the above-mentioned specific unit 30 and selection unit 31 may be realized by the communication device 3004.

The input device 3005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 3006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 3005 and the output device 3006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 3001 and the memory 3002 is accessed by the bus 3007 for communicating information. The bus 3007 may be composed of a single bus or may be composed of different buses between the devices.

Further, the AAA server 3 includes hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured, and some or all of each functional block may be realized by the hardware. For example, the processor 3001 may be implemented on at least one of these hardware.

Further, for example, the HSS 4 may function as a computer. FIG. 8 is a diagram showing an example of the hardware configuration of HSS4. The above-mentioned HSS 4 may be physically configured as a computer device including a processor 4001, a memory 4002, a storage 4003, a communication device 4004, an input device 4005, an output device 4006, a bus 4007, and the like.

In the following description, the word "device" can be read as a circuit, a device, a unit, or the like. The hardware configuration of the HSS 4 may be configured to include one or more of the devices shown in FIG. 8, or may be configured not to include some of the devices.

For each function in the HSS4, by loading predetermined software (program) on hardware such as the processor 4001 and the memory 4002, the processor 4001 performs an calculation, communication by the communication device 4004, and data in the memory 4002 and the storage 4003. It is realized by controlling the reading and / or writing of.

Processor 4001 operates, for example, an operating system to control the entire computer. The processor 4001 may be composed of a central processing unit including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the terminal information storage unit 40 and the like described above may be realized by the processor 4001.

Further, the processor 4001 reads a program (program code), a software module and data from the storage 4003 and / or the communication device 4004 into the memory 4002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the present embodiment is used. For example, the terminal information storage unit 40 and the like described above may be stored in the memory 4002 and realized by a control program operating in the processor 4001, and other functional blocks may be realized in the same manner. Although it has been described that the various processes described above are executed by one processor 4001, they may be executed simultaneously or sequentially by two or more processors 4001. Processor 4001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 4002 is a computer-readable recording medium, and may be composed of at least one such as a ROM, an EPROM, an EEPROM, and a RAM. The memory 4002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 4002 can store a program (program code), a software module, or the like that can be executed to implement the paging method according to the present embodiment.

The storage 4003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM, a hard disk drive, a flexible disk, a photomagnetic disk (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk). ), Smart card, flash memory (eg, card, stick, key drive), floppy® disk, magnetic strip, etc. may consist of at least one. The storage 4003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 4002 and / or storage 4003. For example, the terminal information storage unit 40 and the like described above may be realized by the storage 4003.

The communication device 4004 is hardware (transmission / reception device) for communicating between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the terminal information storage unit 40 and the like described above may be realized by the communication device 4004.

The input device 4005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 4006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. The input device 4005 and the output device 4006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 4001 and the memory 4002 is accessed by the bus 4007 for communicating information. Bus 4007 may be composed of a single bus or may be composed of different buses between devices.

Further, the HSS 4 may be configured to include hardware such as a microprocessor, a digital signal processor, an ASIC, a PLD, and an FPGA, and the hardware may realize a part or all of each functional block. For example, the processor 4001 may be implemented on at least one of these hardware.

Further, for example, the MME 5A may function as a computer. FIG. 9 is a diagram showing an example of the hardware configuration of the MME 5A. The above-mentioned MME5A may be physically configured as a computer device including a processor 5001, a memory 5002, a storage 5003, a communication device 5004, an input device 5005, an output device 5006, a bus 5007, and the like.

In the following description, the word "device" can be read as a circuit, a device, a unit, or the like. The hardware configuration of the MME 5A may be configured to include one or more of the devices shown in FIG. 9, or may be configured not to include some of the devices.

For each function in the MME5A, by loading predetermined software (program) on hardware such as the processor 5001 and the memory 5002, the processor 5001 performs an operation, communication by the communication device 5004, and data in the memory 5002 and the storage 5003. It is realized by controlling the reading and / or writing of.

Processor 5001 operates, for example, an operating system to control the entire computer. The processor 5001 may be composed of a central processing unit including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the above-mentioned access destination information storage unit 50 and the like may be realized by the processor 5001.

Further, the processor 5001 reads a program (program code), a software module and data from the storage 5003 and / or the communication device 5004 into the memory 5002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the present embodiment is used. For example, the above-mentioned access destination information storage unit 50 or the like may be stored in the memory 5002 and realized by a control program operating in the processor 5001, or may be realized in the same manner for other functional blocks. Although it has been described that the various processes described above are executed by one processor 5001, they may be executed simultaneously or sequentially by two or more processors 5001. Processor 5001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 5002 is a computer-readable recording medium, and may be composed of at least one such as a ROM, an EPROM, an EEPROM, and a RAM. The memory 5002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 5002 can store a program (program code), a software module, or the like that can be executed to implement the paging method according to the present embodiment.

The storage 5003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM, a hard disk drive, a flexible disk, a photomagnetic disk (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk). ), Smart card, flash memory (eg, card, stick, key drive), floppy® disk, magnetic strip, etc. may consist of at least one. The storage 5003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 5002 and / or storage 5003. For example, the above-mentioned access destination information storage unit 50 and the like may be realized by the storage 5003.

The communication device 5004 is hardware (transmission / reception device) for communicating between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the above-mentioned access destination information storage unit 50 and the like may be realized by the communication device 5004.

The input device 5005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 5006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. The input device 5005 and the output device 5006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 5001 and the memory 5002 is accessed by the bus 5007 for communicating information. The bus 5007 may be composed of a single bus or may be composed of different buses between the devices.

Further, the MME5A may be configured to include hardware such as a microprocessor, a digital signal processor, an ASIC, a PLD, and an FPGA, and the hardware may realize a part or all of each functional block. For example, the processor 5001 may be implemented on at least one of these hardware.

Next, the access process in the communication system 9 will be described with reference to FIGS. 10 and 11. FIG. 10 is a sequence diagram showing access processing at the time of untrusted non-3GPP access, and FIG. 11 is a sequence diagram showing access processing at the time of trusted non-3GPP access.

First, the access process at the time of untrusted non-3GPP access will be described with reference to FIG.

First, the UE 1 transmits the NAI to the ePDG2A together with the access request (step S1). Next, the ePDG2A transmits the NAI received in S1 together with the access request to the AAA server 3 (step S2). Next, the identification unit 30 of the AAA server 3 transmits the NAI received in S2 to the HSS 4 together with the user information collation (step S3). Next, the HSS 4 refers to the NAI information stored by the terminal information storage unit 40, searches for the "UE Usage type" corresponding to the NAI received in S3, and collates the searched "UE Usage type". As a result, it is transmitted to the AAA server 3 (step S4, specific step).

Next, the selection unit 31 of the AAA server 3 transmits the "UE Usage type" received in S4 together with the access destination confirmation to the MME 5A (step S5). Next, the MME 5A refers to the access destination information stored by the access destination information storage unit 50, and searches for the ID of the PGW 6 corresponding to the "UE Usage type" received in S5 (step S6). Next, the MME 5A transmits the ID of the PGW 6 searched in S6 to the AAA server 3 as a confirmation result (step S7). Next, the selection unit 31 of the AAA server 3 transmits the ID of the PGW 6 received in S7 together with the name resolution to DNS (step S8). Next, DNS transmits the address of ePDG2 and the address of PGW6, which are the results of name resolution of the ID of PGW6 received in S8, to the AAA server 3 as the resolution result (step S9, selection step).

Next, the AAA server 3 transmits the address of the ePDG2 and the address of the PGW6 received in S9 together with the access permission to the ePDG2A (step S10). Next, the ePDG2A transmits a random token to the UE 1 together with the authentication (step S11). Next, the UE 1 transmits the calculation result based on the random token received in S11 to the ePDG2A (step S12). Next, the ePDG2 authenticates using the calculation result received in S12, transmits the address of the PGW 6 received in S10 together with the access permission (step S13), and executes the transmission route establishment sequence (step S14). ..

Subsequently, with reference to FIG. 11, access processing at the time of trusted non-3GPP access will be described.

First, the UE 1 transmits the NAI to the AAA server 3 together with the access request (step S20). Next, the identification unit 30 of the AAA server 3 transmits the NAI received in S2 to the HSS 4 together with the user information collation (step S21). Next, the HSS 4 refers to the NAI information stored by the terminal information storage unit 40, searches for the "UE Usage type" corresponding to the NAI received in S21, and collates the searched "UE Usage type". As a result, it is transmitted to the AAA server 3 (step S22, specific step).

Next, the selection unit 31 of the AAA server 3 transmits the "UE Usage type" received in S22 together with the access destination confirmation to the MME 5A (step S23). Next, the MME 5A refers to the access destination information stored by the access destination information storage unit 50, and searches for the ID of the PGW 6 corresponding to the "UE Usage type" received in S23 (step S24). Next, the MME 5A transmits the ID of the PGW 6 searched in S24 to the AAA server 3 as a confirmation result (step S25). Next, the selection unit 31 of the AAA server 3 transmits the ID of the PGW 6 received in S25 together with the name resolution to DNS (step S26). Next, DNS transmits the address of PGW6, which is the result of name resolution of the ID of PGW6 received in S26, to the AAA server 3 as the resolution result (step S27, selection step).

Next, the AAA server 3 transmits the address of the PGW 6 received in S27 together with the access permission to the UE 1 (step S28), and the transmission route establishment sequence is executed (step S29).

Next, the operation and effect of the communication system 9 configured as in the present embodiment will be described.

According to the communication system 9 of the present embodiment, the "UE Usage type" indicating the type or use of the UE 1 is specified, and the PGW 6 (or a combination of the ePDG 2 and the PGW 6) corresponding to the specified "UE Usage type" is selected. Will be done. That is, PGW 6 corresponding to the "UE Usage type" related to the UE 1 can be selected for the UE 1.

Further, according to the communication system 9 of the present embodiment, when specifying the "UE Usage type" of the UE 1, the HSS 4 storing the "UE Usage type" of the UE 1 is referred to (used). That is, the existing cellular communication node can be effectively utilized without increasing the number of new independent nodes and the like. As a result, complexity such as synchronization between nodes can be suppressed, costs can be reduced, and the communication system 9 of the present embodiment can be easily realized.

Further, according to the communication system 9 of the present embodiment, the access destination information is stored in the default MME (MME5A) in DECOR. That is, the existing cellular communication node can be effectively utilized without increasing the number of new nodes and the like. Thereby, the cost can be reduced and the communication system 9 of the present embodiment can be easily realized. In addition, the DECOR method can be used to distribute UE1s that perform non-cellular communication into appropriate slices. Further, it is possible to realize slice distribution by the DECOR method in one system without distinguishing between a UE that performs non-cellular communication and a UE that performs cellular communication.

Although the present embodiment has been described in detail above, it is clear to those skilled in the art that the present embodiment is not limited to the embodiments described in the present specification. This embodiment can be implemented as an amendment or modification without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description herein is for purposes of illustration only and has no limiting implications for this embodiment.

The notification of information is not limited to the embodiments / embodiments described herein, and may be performed by other methods. For example, information notification includes physical layer signaling (eg, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (eg, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect / embodiment described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to Bluetooth®, other systems that utilize suitable systems and / or next-generation systems that are extended based on them.

The processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present specification may be rearranged in order as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order and are not limited to the particular order presented.

In some cases, the specific operation performed by a specific device in the present specification may be performed by an upper node thereof. For example, when a specific device is a base station, various operations performed for communication with a terminal in a network consisting of one or more network nodes having the base station may be performed. It is clear that it can be done by a base station and / or other network nodes other than the base station, such as, but not limited to, MME or S-GW. Although the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific place (for example, a memory) or may be managed by a management table. Information to be input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each aspect / embodiment described in the present specification may be used alone, in combination, or may be switched and used according to the execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.

Further, software, instructions, and the like may be transmitted and received via a transmission medium. For example, the software may use wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave to website, server, or other. When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described herein may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

The terms described herein and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings. For example, the channel and / or symbol may be a signal. Also, the signal may be a message. Further, the component carrier (CC) may be referred to as a carrier frequency, a cell, or the like.

The terms "system" and "network" used herein are used interchangeably.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. .. For example, the radio resource may be indexed.

The names used for the parameters described above are not limited in any way. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed herein. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements (eg, TPC, etc.) can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect. However, it is not limited.

A base station can accommodate one or more (eg, three) cells (also referred to as sectors). When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station RRH: Remote). Communication services can also be provided by Radio Head). The term "cell" or "sector" refers to a portion or all of the coverage area of a base station and / or base station subsystem that provides communication services in this coverage. In addition, the terms "base station," "eNB," "cell," and "sector" may be used interchangeably herein. A base station may also be referred to by terms such as fixed station, NodeB, eNodeB (eNB), access point, femtocell, and small cell.

Mobile communication terminals may be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, etc. It may also be referred to as a wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

As used herein, the terms "determining" and "determining" may include a wide variety of actions. "Judgment", "decision" is, for example, calculating, computing, processing, deriving, investigating, looking up (eg, table, database or another). It may include searching in the data structure), confirming (ascertaining) as "judgment" and "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" are considered to be "judgment" and "decision" when the things such as solving, selecting, selecting, establishing, and comparing are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include considering some action as "judgment" and "decision".

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. As used herein, the two elements are by using one or more wires, cables and / or printed electrical connections, and, as some non-limiting and non-comprehensive examples, radio frequencies. By using electromagnetic energies such as electromagnetic energies with wavelengths in the region, microwave region and light (both visible and invisible) regions, they can be considered to be "connected" or "coupled" to each other.

The phrase "based on" as used herein does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

As used herein by designations such as "first", "second", etc., any reference to that element does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

The "means" in the configuration of each of the above devices may be replaced with a "part", a "circuit", a "device" and the like.

As long as "include", "including", and variations thereof are used herein or within the scope of the claims, these terms are similar to the term "comprising". In addition, it is intended to be inclusive. Moreover, the term "or" as used herein or in the claims is intended to be non-exclusive. In the present specification, a plurality of devices shall be included unless the device has only one device apparently in context or technically.

The entire disclosure is intended to include more than one, unless the context clearly indicates the singular.

1 ... UE, 2.2A, 2B ... ePDG, 3 ... AAA server, 4 ... HSS, 5.5A, 5B, 5C ... MME, 6.6A, 6B, 6C ... PGW, 7.7A, 7B ... SGW, 8 ... eNB, 9 ... communication system, 30 ... specific unit, 31 ... selection unit, 40 ... terminal information storage unit, 50 ... access destination information storage unit.

Claims (5)

Mobile communication with non-cellular communication terminals that can use multiple communication services through non-cellular communication, and multiple gateway devices that each provide a slice that is a virtual network or service network that is logically generated on the network infrastructure. It is a gateway selection method executed by a communication system including a movement control device that performs movement control in the above and a user information database of a database that is used in cellular communication and is a node of cellular communication, and is used by the non-cellular communication terminal. It is a gateway selection method that selects the gateway device that performs communication for a communication service and distributes slices to the non-cellular communication terminal.
A specific step of specifying the terminal information of the non-cellular communication terminal by referring to the user information database of the cellular communication storing the terminal information indicating the type or use of the non-cellular communication terminal.
Refer to the access destination information stored in the movement control device , which is associated with the terminal information of the non-cellular communication terminal and the gateway device that performs communication according to the terminal information. The selection step of selecting the gateway device corresponding to the terminal information of the non-cellular communication terminal specified in the specific step.
Gateway selection method including. The user information database for cellular communication stores user information about a user of the non-cellular communication terminal and the terminal information of the non-cellular communication terminal, and combines information for non-cellular communication and information for cellular communication. Store,
The gateway selection method according to claim 1. The movement control device is a default movement control device which is a movement control device that is first accessed when the mobile terminal performs mobile communication among a plurality of movement control devices.
The gateway selection method according to claim 1 or 2. The selection step selects the gateway device for communicating with the non-cellular communication terminal and the gateway device for packet transfer, which correspond to the terminal information of the non-cellular communication terminal specified in the specific step. The gateway selection method according to any one of 3. Mobile communication with non-cellular communication terminals that can use multiple communication services through non-cellular communication, and multiple gateway devices that each provide a slice that is a virtual network or service network that is logically generated on the network infrastructure. It is a communication system including a movement control device that performs movement control in a cellar communication system and a user information database of a database that is used in cellular communication and is a node of cellular communication.
A specific unit that specifies the terminal information of the non-cellular communication terminal by referring to the user information database of the cellular communication that stores the terminal information indicating the type or use of the non-cellular communication terminal.
Refer to the access destination information stored in the movement control device , which is associated with the terminal information of the non-cellular communication terminal and the gateway device that performs communication according to the terminal information. A selection unit that selects the gateway device corresponding to the terminal information of the non-cellular communication terminal specified by the specific unit.
A communication system equipped with.

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