WO2016027545A1 - Wireless communication device and wireless communication method - Google Patents

Wireless communication device and wireless communication method Download PDF

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Publication number
WO2016027545A1
WO2016027545A1 PCT/JP2015/065595 JP2015065595W WO2016027545A1 WO 2016027545 A1 WO2016027545 A1 WO 2016027545A1 JP 2015065595 W JP2015065595 W JP 2015065595W WO 2016027545 A1 WO2016027545 A1 WO 2016027545A1
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WIPO (PCT)
Prior art keywords
wireless communication
network
terminal
wlan
wireless
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PCT/JP2015/065595
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French (fr)
Japanese (ja)
Inventor
大介 川上
鈴木　英之
信次 高江
伊東　克俊
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ソニー株式会社
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Publication of WO2016027545A1 publication Critical patent/WO2016027545A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present disclosure relates to a wireless communication device and a wireless communication method.
  • a terminal having a WWAN (Wireless Wide Area Network) communication function such as a smartphone and a mobile phone, can access the Internet via a mobile communication network even when the user is away from home.
  • a terminal that does not have a WWAN communication function is required to access the Internet by using another communication method such as a wireless LAN (WLAN).
  • WLAN wireless LAN
  • subscription information including home service provider information, policy information, and pre-provisioned authentication information is stored in a mobile device, and automatically used on Wi-Fi (registered trademark).
  • Wi-Fi registered trademark
  • the present disclosure proposes a new and improved wireless communication apparatus and wireless communication method that can be more easily connected to the Internet.
  • the first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network
  • the second wireless that performs wireless communication by connecting to the second network.
  • a control unit that selects the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the communication unit and the first wireless communication unit Is provided.
  • the second wireless communication is performed between the first wireless communication unit that performs wireless communication by connecting to the first network and the wireless terminal that performs wireless communication by connecting to the second network. And the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal. And a control unit that provides a wireless communication device.
  • the first wireless communication unit performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network
  • the second wireless communication unit establishes the second network. Connecting and performing wireless communication, and connecting the second wireless communication unit with the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit Selecting a network is provided.
  • the first wireless communication unit connects to the first network to perform wireless communication, and the wireless communication with the wireless terminal that connects to the second network and performs wireless communication is performed first. And the second wireless communication unit transmits the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal. And a wireless communication method including controlling a communication unit.
  • FIG. 1 is a diagram for describing an overview of a wireless communication system according to an embodiment of the present disclosure.
  • FIG. 1 is a diagram for describing an overview of a wireless communication system according to an embodiment of the present disclosure.
  • FIG. It is a block diagram which shows an example of a logical structure of the radio
  • It is a block diagram which shows an example of a logical structure of the WLAN terminal which concerns on this embodiment.
  • elements having substantially the same functional configuration may be distinguished by adding different alphabets after the same reference numerals.
  • a plurality of elements having substantially the same functional configuration are distinguished as necessary, such as the wireless communication devices 100A, 100B, and 100C.
  • the wireless communication devices 100A, 100B, and 100C are simply referred to as the wireless communication device 100.
  • FIG.1 and FIG.2 is a figure for demonstrating the outline
  • the wireless communication system 1 includes a wireless communication device 100 and a wireless communication device 200.
  • the wireless communication device 100 is a wireless terminal capable of wireless communication with other devices.
  • the wireless communication device 100 is a notebook PC.
  • the wireless communication device 100 is a WLAN terminal that can be connected to a WLAN according to a communication method such as IEEE (Institute of Electrical and Electronics Engineers) 802.11a, 11b, 11g, 11n, 11ac, or 11ad.
  • IEEE Institute of Electrical and Electronics Engineers
  • the WALN terminal 100 can form a wireless connection with the wireless communication device 200.
  • This wireless connection can be formed according to an arbitrary communication method such as Bluetooth (registered trademark) or NFC (Near field communication).
  • the WLAN terminal 100 can be connected to a WLAN whose network information is known, such as a WLAN that is operated at the user's home, for example, but is difficult to connect to a WLAN whose network information such as whereabouts is unknown.
  • the wireless communication device 100 includes a PC, a tablet terminal, a PDA (Personal Digital Assistant), an HMD (Head Mounted Display), a headset, a digital camera, a digital video camera, a smartphone, a mobile phone terminal, a mobile phone, and the like. It may be realized as a music playback device, a portable video processing device, a portable game device, or the like.
  • the wireless communication device 200 is a wireless terminal capable of wireless communication with other devices.
  • the wireless communication device 200 is a smartphone.
  • the wireless communication apparatus 200 can form a wireless connection with the WLAN terminal 100, for example.
  • the wireless communication apparatus 200 is a WWAN terminal that has a WWAN communication function and can be connected to the WWAN.
  • the WWAN terminal 200 has subscriber identification information for connecting to a mobile communication network, performs authentication processing using the subscriber identification information, and establishes wireless connection with a wireless network 300 such as a mobile communication network. Can be formed.
  • the subscriber identification information is, for example, an IMSI (International Mobile Subscriber Identity) stored in a SIM card (Subscriber Identity Module Card).
  • IMSI International Mobile Subscriber Identity
  • SIM card Subscriber Identity Module Card
  • the WWAN terminal 200 can use the service provided by the service network 400 by connecting to the wireless network 300 using the WWAN communication function.
  • the wireless communication device 200 is not only a smartphone but also a notebook PC, PC, tablet terminal, PDA, HMD, headset, digital camera, digital video camera, mobile phone terminal, portable music player, portable video processing device. Alternatively, it may be realized as a portable game device or the like.
  • the wireless network 300 is a WWAN (first network) such as a mobile communication network.
  • the WWAN 300 is operated according to an arbitrary wireless communication system such as LTE (Long Term Evolution), LTE-A (LTE-Advanced), GSM (registered trademark), UMTS, W-CDMA, or CDMA2000.
  • the WWAN 300 is connected from the wireless communication device 200 located within the range of the cell operated by the base station 310.
  • the service network 400 is a public network such as the Internet.
  • the WWAN terminal 200 can access the service network 400 via the WWAN 300.
  • examples of means for realizing access to the Internet while away from home include tethering by a terminal capable of WWAN communication or use of a public WLAN.
  • Tethering is a technology for connecting other communication terminals to the WWAN 300 via a terminal having a WWAN communication function such as a smartphone.
  • the WWAN terminal 200 can be connected to the WWAN 300 and the WLAN terminal 100.
  • the WWAN terminal 200 functions as an access point that relays communication between the WWAN 300 and the WLAN terminal 100, and can realize tethering.
  • the WLAN terminal 100 can use the service provided by the service network 400.
  • Tethering can be used wherever the WWAN terminal 200 is located in an area where WWAN communication is possible. However, since it is necessary to perform terminal setting for tethering use in both the WWAN terminal 200 and the WLAN terminal 100, the convenience of the user is impaired. Further, during tethering, the power consumption of the WWAN terminal 200 functioning as an access point is large.
  • a public WLAN is a service that provides a connection to the Internet using a WLAN.
  • a wireless network 500 shown in FIG. 2 is a public network (second network) operated by a WLAN, for example.
  • the WLAN terminal 100 can connect to any one of the WLANs 500 to access the service network 400 or further access the service network 400 via the WWAN 300. As a result, the WLAN terminal 100 can use the service provided by the service network 400.
  • a wireless terminal having a WWAN communication function such as a smartphone is an ANDSF (Access Network Discovery and Selection Function) proposed by 3GPP (Third Generation Partnership Project), or Wi-Fi CERTIFIED proposed by Wi-Fi Alliance.
  • ANDSF Access Network Discovery and Selection Function
  • 3GPP Third Generation Partnership Project
  • Wi-Fi CERTIFIED Wi-Fi Alliance
  • the WLAN terminal 100 can use tethering anywhere in the area where the WWAN terminal 200 can communicate with WWAN.
  • the WWAN terminal 200 operates as an access point during the tethering operation, it is difficult to search for surrounding access points, and the tethering is automatically terminated even when entering the area where the public WLAN can be used. It was difficult. For this reason, the user performs an operation to intentionally end the tethering, and convenience is impaired.
  • the ANDSF can instruct the WLAN terminal 100 to switch the connection destination (end of tethering and connection to the public WLAN) based on the position information of the WWAN terminal 200.
  • the connection destination end of tethering and connection to the public WLAN
  • a wireless communication apparatus can easily select an appropriate public WLAN and use the Internet even when the wireless communication apparatus does not have a WWAN communication function and subscriber identification information.
  • a wireless communication system including a wireless communication apparatus according to an embodiment of the present disclosure will be described in detail with reference to FIGS.
  • FIG. 3 is a block diagram illustrating an example of a logical configuration of the wireless communication system 1 according to the present embodiment.
  • the wireless communication system 1 includes a WLAN terminal 100 and a WWAN terminal 200, and provides wireless connection to the WWAN 300, the WLAN 500, and the service network 400.
  • the WWAN 300 is operated by a base station 310, a gateway 320, a subscriber information server 330, an authentication server 340, and a network information providing server 350.
  • the base station 310 is a device that serves as a contact point when a wireless terminal having a WWAN communication function is connected to the WWAN 300.
  • the base station 310 accepts a connection from the WWAN terminal 200.
  • the base station 310 corresponds to an eNB.
  • the gateway 320 is a device that relays communication between the WWAN 300 and another network.
  • the gateway 320 relays communication between the WWAN 300 and the service network 400 and communication between the WWAN 300 and the WLAN 500.
  • the gateway 320 corresponds to a P-GW (Packet Data Network Gateway).
  • the subscriber information server 330 is a device that holds subscriber information for the WWAN 300.
  • the subscriber information server 330 also holds information used for authentication processing when a wireless terminal connects to the WWAN 300.
  • the subscriber information server 330 corresponds to an HSS (Home Subscriber Server).
  • the authentication server 340 is a device that authenticates that the connection to the WWAN 300 is a connection by a WWAN 300 subscriber.
  • the authentication server 340 can perform this authentication process with reference to the subscriber information server 330.
  • the authentication server 340 corresponds to an AAA (Authentication, Authorization and Accounting) server.
  • subscriber identification information is commonly used for authentication. That is, a terminal that has a WWAN communication function and can be connected to the WWAN 300 through authentication processing using the subscriber identification information can be connected to the WLAN 500 through authentication processing using the subscriber identification information.
  • the authentication server 340 refers to the subscriber information server 330 and performs authentication processing for both the terminal that connects to the WLAN 500 and the terminal that connects to the WWAN 300.
  • the network information providing server 350 is a device that provides information on a connection destination wireless network, which is necessary when the connection destination is switched from the wireless network to which the wireless terminal is currently connected to another wireless network.
  • the network information providing server 350 can provide network information for connecting to the WLAN 500 to the WWAN terminal 200.
  • the network information providing server 350 corresponds to an ANDSF server.
  • the WLAN 500 is a public network operated by the base station 510.
  • the communication system of the public network is described as being WLAN, but may be operated according to any other communication system such as Bluetooth.
  • the base station 510 is a device that serves as a contact point when a wireless terminal having a WLAN communication function connects to the WLAN 500. For example, the base station 510 receives a connection from the WLAN terminal 100. When the communication method of the public network is WLAN, the base station 510 corresponds to an access point.
  • FIG. 4 is a block diagram illustrating an example of a logical configuration of the WLAN terminal 100 according to the present embodiment. As illustrated in FIG. 4, the WLAN terminal 100 includes a wireless communication unit 110, a storage unit 120, and a control unit 130.
  • the wireless communication unit 110 is a communication module that transmits / receives data to / from an external device.
  • the wireless communication unit 110 can perform wireless communication using various communication methods.
  • the wireless communication unit 110 includes a WLAN module 112 and can perform wireless communication using Wi-Fi (registered trademark) or WLAN.
  • the wireless communication unit 110 includes a BT (Bluetooth) module 114 and can perform wireless communication using Bluetooth.
  • the wireless communication unit 110 includes an NFC module 116 and can perform wireless communication using NFC.
  • the wireless communication unit 110 can function as a first wireless communication unit that performs wireless communication with the WWAN terminal 200 that connects to the WWAN 300 and performs wireless communication.
  • the wireless communication unit 110 performs wireless communication with the WWAN terminal 200 using a short-range wireless communication method such as NFC or Bluetooth, or WLAN.
  • the wireless communication unit 110 can function as a second wireless communication unit that performs wireless communication by connecting to a public network.
  • the wireless communication unit 110 connects to the WLAN 500 using a wireless communication method such as WLAN.
  • the public network may support any wireless communication method other than WLAN, and in that case, the wireless communication unit 110 can connect to the public network using a wireless communication method according to the public network.
  • the wireless communication unit 110 may measure the received radio wave intensity indicating the intensity of the signal received from each WLAN 500.
  • the wireless communication unit 110 may perform wireless communication using the same communication method for wireless communication with the WWAN terminal 200 and wireless communication with the public network.
  • the wireless communication unit 110 may connect to the WLAN 500 while communicating with the WWAN terminal 200 using WLAN.
  • the wireless communication unit 110 can receive a policy (to be described later) while performing tethering via the WWAN terminal 200 and performing data transmission / reception with the service network 400.
  • the storage unit 120 is a part that records and reproduces data on a predetermined recording medium.
  • the storage unit 120 stores information received from the WWAN terminal 200 by the wireless communication unit 110.
  • the storage unit 120 can store access network information and policies described later.
  • Control unit 130 functions as an arithmetic processing device and a control device, and controls the overall operation in the device WLAN terminal 100 according to various programs.
  • the control unit 130 has a function of selecting the WLAN 500 to be connected by the wireless communication unit 110 based on the WLAN 500 policy received from the WWAN terminal 200 by the wireless communication unit 110.
  • a policy is information about a public WLAN that can be used by a subscriber of a mobile communication network, and is a part of access network information. Note that the access network information may be regarded as a policy.
  • the policy is information that can be obtained by the subscriber having the subscriber identification information of the mobile communication network. For this reason, when the WLAN terminal 100 does not have subscriber identification information, it is difficult to obtain a policy by itself. Therefore, the control unit 130 controls the wireless communication unit 110 to transmit a request for requesting transmission of the policy to the WWAN terminal 200 having the subscriber identification information.
  • the WLAN terminal 100 can acquire the policy from the WWAN terminal 200 and can be used for selecting the WLAN 500 to be connected. Further, as will be described later, the WLAN terminal 100 causes the WWAN terminal 200 to perform authentication processing for the WLAN 500 as a proxy. In the authentication process, the subscriber identification information of the WWAN terminal 200 is used. Therefore, the WLAN terminal 100 obtains a policy corresponding to the subscriber identification information of the WWAN terminal 200 from the WWAN terminal 200, so that only the WLAN 500 that can be authenticated by the WWAN terminal 200, that is, can be connected, is selected. can do.
  • the contents of the policy will be described with reference to FIG.
  • FIG. 5 is an explanatory diagram for explaining an example of a policy according to the present embodiment.
  • FIG. 5 shows a configuration of nodes included in the policy. As shown in FIG. 5, the policy has a directory structure. Hereinafter, each node will be described.
  • Rule Priority Rule priority. Expressed as an integer, the lower the priority, the higher the priority
  • Prioritized Access Node Access Technology indicating priority access to a specific rule: The technology for priority connection is described with one of the following integers: 0: Reserved 1: 3GPP 2: Reserved 3: WLAN 4: WiMAX 5-255: Reserved AccessId: In the case of WLAN, the access network ID is SSID, and in the case of WiMAX, NAP-ID is written as a character string. SecondaryAccessId: Only the HESSID is written in the character string for the WLAN access network. Used only when WLAN is selected for AccessId. AccessNetworkPriority: The priority of the access technology is described with an integer of 1-250. The lower the value, the higher the priority. 0: Reserved 1-250: Priority value 251-253: Reserved 254: Limited access, should not be accessed if current rule is valid 255: Prohibited, UE should not access if current rule is valid
  • ValidityArea Location condition for a specific rule 3GPP_Location: 3GPP location PLMN: PLMN (Public Land Mobile Network) code TAC for a specific 3GPP location condition: Tracking area code LAC for a specific 3GPP location condition: Location area code GERAN_CI for a specific 3GPP location condition: Cell ID of the location associated with a specific GERAN (GSM EDGE Radio Access Network) network UTRAN_CI: Cell ID of the location associated with a specific UTRAN (UMTS Terrestrial Radio Access Network) network EUTRA_CI: Cell ID of the location associated with a specific E-UTRA (Evolved Universal Terrestrial Radio Access) network 3GPP2_Location: 3GPP2 location 1x: 3GPP2 1x RAT (Radio Access Technology) Location SID: System identification code NID for 3GPP2 1x RAT location condition: Network identification code for 3GPP2 1x RAT location condition Base_ID: Base station identification code HRPD for 3GPP2 1x
  • TimeOfDay Node indicating the status of the date and time TimeStart: Start time TimeStop: End time DateStart: Start Date DateStop: End Date UpdatePolicy: The update policy is indicated by 0 or 1. 0: UE does not need to be updated 1: UE needs to be updated
  • the policy includes the network priority and the access ID for identifying the network.
  • the control unit 130 selects the WLAN 500 to be connected according to the priority order included in the policy. Then, the control unit 130 connects to the selected WLAN 500 using the access ID included in the policy. The control unit 130 may select not to connect to the WLAN 500 and select to use tethering.
  • the control unit 130 may further select the WLAN 500 using any index other than the priority order. For example, the control unit 130 may select the WLAN 500 to be connected based on the received radio wave intensity of each WLAN 500 measured by the wireless communication unit 110. Thereby, the WLAN terminal 100 ensures a sufficient data communication rate by selecting the WLAN 500 having a strong received radio wave intensity even in a situation where, for example, the base stations 510 are crowded or the radio wave environment changes dynamically. be able to. Further, when it is difficult to ensure a sufficient data communication rate, the control unit 130 may select to use tethering.
  • the access network information also includes information on public WLAN that can be used by mobile communication network subscribers.
  • the access network information is also information that can be obtained by a subscriber having subscriber identification information of the mobile communication network, as in the policy. Therefore, the control unit 130 may acquire access network information from the WWAN 300 having the subscriber identification information and use it for selecting the WLAN 500 to be connected.
  • the control unit 130 searches the network existing in the vicinity, and controls the wireless communication unit 110 to connect to the WLAN 500 that has been successfully searched.
  • the order of searching for surrounding networks and selecting a network to be connected is arbitrary.
  • the control unit 130 may select the WLAN 500 to be connected from the surrounding networks searched by the wireless communication unit 110 based on the policy.
  • the control unit 130 controls the wireless communication unit 110 so as to search surrounding networks on all channels.
  • the control unit 130 can select the WLAN 500 to be connected while comparing an index such as radio wave intensity in addition to the policy among a plurality of networks existing in the vicinity.
  • the control unit 130 may control the wireless communication unit 110 to search for a surrounding network for the WLAN 500 selected based on the policy.
  • control unit 130 controls the wireless communication unit 110 so as to search the surrounding network only for the channel on which the selected WLAN 500 operates.
  • the control unit 130 can perform the search at a higher speed.
  • the WLAN terminal 100 itself searches for surrounding networks. As a result, even in a situation where the WLANs 500 are crowded or the radio wave environment changes dynamically, it becomes possible to select the WLAN 500 appropriate for itself while comparing surrounding networks.
  • the control unit 130 may continue to search for another WLAN 500 after connecting to the selected WLAN 500 and switch the connected WLAN 500 according to the search result. For example, the control unit 130 can perform a search for another WLAN 500 having a higher priority than the currently connected WLAN 500 and switch the search when the search is successful. In addition, the control unit 130 may switch to another WLAN 500 whose received radio wave intensity is stronger than the connected WLAN 500. As a result, the WLAN terminal 100 can automatically switch to a better connection destination after connection to the WLAN 500.
  • the control unit 130 can continue the search even while using tethering. For example, the control unit 130 may continue searching for the WLAN 500 after connecting to the WWAN terminal 200 operating as an access point, and switch the connection destination to the WLAN 500 according to the search result. While the WWAN terminal 200 operates as an access point, it is difficult to search the surrounding WLAN 500. On the other hand, the WLAN terminal 100 can continuously search the surrounding WLAN 500 even during tethering. Therefore, the WLAN terminal 100 continuously searches even while tethering is used, so that tethering is automatically terminated when the public WLAN enters an available area, and the connection destination is automatically transferred to the public WLAN. Can be switched. Thereby, the power consumption of the WWAN terminal 200 is reduced, and the traffic of the WWAN communication is also reduced.
  • the control unit 130 may perform an authentication process using the subscriber identification information when connecting to the searched WLAN 500.
  • the control unit 130 performs authentication to the WLAN 500 by EAP (Extensible Authentication Protocol) authentication using subscriber identification information included in the WWAN terminal 200.
  • EAP Extensible Authentication Protocol
  • the control unit 130 receives authentication information based on the subscriber identification information from the WWAN terminal 200 by the wireless communication unit 110, and performs authentication to the WLAN 500 using the authentication information by the wireless communication unit 110.
  • the control unit 130 controls a relay process for relaying a message transmitted / received between the WWAN terminal 200 and the WLAN 500 for the authentication process performed by the WWAN terminal 200.
  • the control unit 130 transmits a message (first message) for authentication to the WLAN 500 received by the wireless communication unit 110 to the WWAN terminal 200 by the wireless communication unit 110.
  • This message is, for example, a message that requests generation of authentication information.
  • the control unit 130 receives a message (second message) received by the wireless communication unit 110 from the WWAN terminal 200 and containing the authentication information generated by the WWAN terminal 200, as a base for operating the WLAN 500 using the wireless communication unit 110. Transmit to station 510.
  • the message relayed by the WLAN terminal 100 may be a message for authentication processing using EAP.
  • the first message may be EAP-Request / Identity
  • the second message may be EAP-Response / Identity.
  • the first message may be EAP-Request / AKA-Challenge and the second message may be EAP-Response / AKA-Challenge.
  • EAP-AKA is adopted as an example of an authentication protocol.
  • other authentication protocols such as EAP-SIM or EAP-AKA ', which use subscriber information for authentication processing. May be adopted.
  • EAP switching enables connection destination network switching without requiring user operation.
  • the WLAN terminal 100 continues the search even after connecting to the WLAN 500 and switches the connection destination network. Therefore, the user convenience is improved by the EAP authentication that does not require the user operation.
  • control unit 130 can cause the WWAN terminal 200 to perform authentication processing for the WLAN 500 using EAP by proxy by the above-described message relay processing. For this reason, the WLAN terminal 100 can be easily connected to the WLAN 500 even when it does not have subscriber identification information.
  • the control unit 130 may control the wireless communication unit 110 to transmit information indicating a connection result to the selected WLAN 500 to the WWAN terminal 200.
  • information indicating the connection result for example, whether or not the connection to the WLAN 500 is successful, the data communication rate when the connection is successful, and the like can be considered.
  • the configuration example of the WLAN terminal 100 according to the present embodiment has been described above.
  • a configuration example of the WWAN terminal 200 according to the present embodiment will be described with reference to FIG.
  • FIG. 6 is a block diagram illustrating an example of a logical configuration of the WWAN terminal 200 according to the present embodiment.
  • the WWAN terminal 200 includes a wireless communication unit 210, a storage unit 220, a subscriber identification module 230, and a control unit 240.
  • the wireless communication unit 210 is a communication module that transmits / receives data to / from an external device.
  • the wireless communication unit 210 can perform wireless communication using various communication methods.
  • the wireless communication unit 210 includes a WWAN module 212 and can perform wireless communication using the WWAN 300.
  • the wireless communication unit 210 includes a WLAN module 214 and can perform wireless communication using Wi-Fi or WLAN.
  • the wireless communication unit 210 includes a BT module 216 and can perform wireless communication using Bluetooth.
  • the wireless communication unit 210 includes an NFC module 218 and can perform wireless communication using NFC.
  • the wireless communication unit 210 can function as a second wireless communication unit that performs wireless communication with the WLAN terminal 100.
  • the wireless communication unit 210 performs wireless communication with the WLAN terminal 100 using a short-range wireless communication method such as NFC, Bluetooth, or Zigbee (registered trademark), or WLAN.
  • the wireless communication unit 210 can function as a first wireless communication unit that performs wireless communication by connecting to the WWAN 300 using the WWAN module 212.
  • the storage unit 220 is a part that records and reproduces data on a predetermined recording medium.
  • the storage unit 220 stores information received from the WWAN 300 by the wireless communication unit 210.
  • the storage unit 220 can store access network information, policies, and the like, for example.
  • the subscriber identification module 230 has a function as a storage unit that stores subscriber identification information for the WWAN 300.
  • the subscriber identification module 230 is realized by a SIM card.
  • Control unit 240 functions as an arithmetic processing device and a control device, and controls the overall operation in the device WWAN terminal 200 according to various programs.
  • the control unit 240 has a function of providing the WLAN terminal 100 with information necessary for selecting the WLAN 500 to which the WLAN terminal 100 is connected.
  • the control unit 240 controls the wireless communication unit 210 to transmit the WLAN 500 policy received by the wireless communication unit 210 via the WWAN 300 to the WLAN terminal 100.
  • the control unit 240 controls the wireless communication unit 210 to acquire the WLAN 500 policy in response to the request received from the WLAN terminal 100 by the wireless communication unit 210.
  • the control unit 240 acquires a policy from the network information providing server 350. Then, the control unit 240 transmits the acquired policy to the WLAN terminal 100.
  • the WWAN terminal 200 can acquire a policy that is difficult for the WLAN terminal 100 to acquire on its own, and provide it to the WLAN terminal 100.
  • the control unit 240 may modify the policy based on the connection result of the WLAN terminal 100 to the WLAN 500. For example, the control unit 240 selects a WLAN 500 that is more likely to be successfully connected and has a higher data communication rate based on whether or not the WLAN terminal 100 has succeeded in connection, a data communication rate in the case of success, Or attach it. Then, the control unit 240 deletes the policy transmitted to the WLAN terminal 100 only with respect to the selected WLAN 500, or changes the priority order included in the policy according to the ranking. Thereby, the WLAN terminal 100 can be easily connected to a more appropriate WLAN 500. This modification may be applied not only to the WLAN terminal 100 that transmitted the connection result, but also to a policy that is transmitted to another WLAN terminal 100. Further, this modification may be similarly applied when the WWAN terminal 200 itself connects to the WLAN 500.
  • control unit 240 may perform an authentication process for the WLAN terminal 100 to authenticate to the WLAN 500. Specifically, the control unit 240 generates authentication information based on the subscriber identification information stored in the subscriber identification module 230, and transmits the authentication information to the WLAN terminal 100 by the wireless communication unit 210. Specifically, the control unit 240 performs an authentication process based on a message relayed by the WLAN terminal 100. For example, the control unit 240 performs authentication processing based on a message (first message) for the WLAN terminal 100 to authenticate to the WLAN 500 received from the WLAN terminal 100 by the wireless communication unit 210 and generates authentication information. . This message is, for example, a message that requests generation of authentication information. In addition, the control unit 240 transmits a message (second message) including the generated authentication information to the WLAN terminal 100 by the wireless communication unit 210.
  • first message a message for the WLAN terminal 100 to authenticate to the WLAN 500 received from the WLAN terminal 100 by the wireless communication unit 210 and generates authentication information.
  • This message is, for example,
  • the control unit 240 may perform authentication processing using EAP based on a message relayed by the WLAN terminal 100 to generate authentication information. As described above, the control unit 240 may perform authentication processing using any authentication protocol that uses subscriber information for authentication processing, such as EAP-AKA, EAP-SIM, or EAP-AKA '. The control unit 240 can perform the authentication process for the WLAN 500 using EAP on behalf of the WLAN terminal 100 by receiving the relay of the message by the WLAN terminal 100. For this reason, the WWAN terminal 200 can realize easy connection to the WLAN 500 by the WLAN terminal 100 even when the WLAN terminal 100 does not have subscriber identification information. In addition, since the WWAN terminal 200 does not directly transmit subscriber identification information or the like to the WLAN terminal 100, security can be ensured.
  • FIG. 7 is a sequence diagram showing an example of the flow of connection processing executed in the wireless communication system 1 according to the present embodiment. As shown in FIG. 7, the base station 310, the WWAN terminal 200, the WLAN terminal 100, and the base station 510 are involved in this sequence.
  • step S102 the WWAN terminal 200 performs policy acquisition processing with the base station 310.
  • the WWAN 300 discovers the network information providing server 350 through a DHCP (Dynamic Host Configuration Protocol) inquiry.
  • the WWAN terminal 200 requests the network information providing server 350 to transmit the policy, acquires the policy, and updates the policy stored in the storage unit 220.
  • DHCP Dynamic Host Configuration Protocol
  • the WLAN terminal 100 transmits a request for requesting transmission of a policy and receives a policy from the WWAN terminal 200.
  • the WWAN terminal 200 may acquire a policy from the network information providing server 350 using a request from the WLAN terminal 100 as a trigger.
  • the policy structure is as described above with reference to FIG. Here, it is assumed that the following network selection policy is acquired as an example of the policy.
  • Set_1 there are two types of policies, Set_1 and Set_2, for the ANDSF Management Object with the name NetworkSelectionPolicy, and the priority is defined by RulePriority.
  • Set_1 includes information related to the three WLANs 500, and each connection priority is determined by AccessNetworkPriority.
  • step S104 the WWAN terminal 200 transmits a policy to the WLAN terminal 100.
  • a short-range wireless communication system such as NFC, Bluetooth, or Zigbee can be used.
  • the WLAN may be used for policy transmission.
  • the timing at which the WWAN terminal 200 transmits the policy is arbitrary. For example, the WWAN terminal 200 may transmit before going out, may transmit during going out, or may transmit at the timing when entering the WLAN 500 while going out.
  • the WLAN terminal 100 evaluates the received policy.
  • the control unit 130 evaluates the received policy and determines whether it is necessary to newly acquire access network information.
  • the control unit 130 may determine that access network information needs to be acquired when the received policy includes information regarding the WLAN 500 that is not stored in the storage unit 120.
  • the control unit 130 may access network. It may be determined that acquisition of information is necessary.
  • the WLAN terminal 100 may select the connection destination WLAN 500 using information stored in the storage unit 120.
  • the WLAN terminal 100 transmits an access network information request for requesting transmission of access network information.
  • the access network information request is relayed to the network information providing server 350 via the WWAN terminal 200 and the base station 310.
  • the access network information request may include the following information, for example.
  • the WLAN terminal 100 transmits an access network information request shown in the following table.
  • step S110 the WWAN terminal 200 transmits an access network information response storing the access network information to the WLAN terminal 100.
  • the access network information response is relayed from the network information providing server 350 to the WLAN terminal 100 via the base station 310 and the WWAN terminal 200.
  • An example of access network information held by the network information providing server 350 is shown below.
  • Access Network ID Network information identifier (identifier for uniquely identifying network information)
  • Access Network Type Network type (WLAN, WiMAX, etc.)
  • Access Network Property Detailed network information For WLAN, for example:-HESSID (Homogeneous Extended Service Set Identifier) -ESSID (Extended Service Set Identifier) – BSSID (Basic Service Set Identifier) -Operating channel, etc.
  • Geo Location Area information available for this network Available Date & Time: Time information that this network can use Priority: Priority when selecting this network as the connection destination
  • the WLAN terminal 100 has received the access network information shown in the following table as an example.
  • the WLAN terminal 100 searches for a surrounding network based on the received policy and access network information (Scan1). For example, the WLAN terminal 100 selects the WLAN 500 to be connected from the searched surrounding networks based on the policy, or searches the surrounding network for the WLAN 500 selected based on the policy. The WLAN terminal 100 selects the WLAN 500 to be connected according to the priority order described in the policy. The WLAN terminal 100 may select the WLAN 500 to be connected based on the received radio wave intensity in addition to the priority order.
  • the WLAN terminal 100 starts tethering.
  • step S114 the WLAN terminal 100 transmits a tethering start request to the WWAN terminal 200.
  • This tethering start request can be transmitted using a short-range wireless communication system such as NFC or Bluetooth.
  • step S116 the WWAN terminal 200 that has received the tethering start request operates as an access point to start tethering. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the WWAN terminal 200. As shown in FIG. 7, the tethering process started by this tethering start request is continued until a tethering end request is received (step S126).
  • step S118 the WLAN terminal 100 continuously searches for surrounding networks based on the received policy and access network information even during tethering use (Scan2). Again, it is assumed that the search has failed.
  • step S120 the WLAN terminal 100 continuously searches for surrounding networks based on the received policy and access network information (Scan 3). Here, it is assumed that the search is successful. In this case, the WLAN terminal 100 transmits a Probe Request to the base station 510, receives the Probe Response, and investigates the corresponding authentication method and Capability.
  • step S122 the WLAN terminal 100 authenticates the WLAN 500 by EAP authentication processing. Since this process will be described later with reference to FIGS. 8 and 9, a detailed description thereof will be omitted here.
  • EAP authentication process communication for tethering is performed between the WLAN terminal 100 and the WWAN terminal 200, and a message for EAP authentication process is transmitted / received using this communication.
  • a connection for WLAN communication is established between the WLAN terminal 100 and the base station 510 in step S124. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the base station 510.
  • step S126 the WLAN terminal 100 transmits a tethering end request to the WWAN terminal 200.
  • This tethering end request can be transmitted using a short-range wireless communication method such as NFC or Bluetooth, or a WLAN being used for tethering.
  • [3-2. EAP authentication process] 8 and 9 are sequence diagrams illustrating an example of the flow of EAP authentication processing executed in the wireless communication system 1 according to the present embodiment.
  • the base station 310, the WWAN terminal 200, the WLAN terminal 100, the base station 510, the authentication server 340, and the subscriber information server 330 are involved in the sequence.
  • communication modules used for message exchange are described with the term “module” omitted.
  • a message having a WLAN (Wi-Fi) module 112 as a starting point or an ending point indicates that the WLAN module 112 transmits and receives.
  • communication for tethering is performed between the WLAN terminal 100 and the WWAN terminal 200, and a message for EAP authentication processing is transmitted and received using this communication.
  • a wireless connection using Bluetooth is established between the WLAN terminal 100 and the WWAN terminal 200 for tethering.
  • step S202 the WLAN terminal 100 performs association to the base station 510.
  • the WLAN terminal 100 establishes a logical connection for authentication processing by association.
  • the WLAN terminal 100 cannot perform data communication other than authentication processing, for example.
  • step S204 the WLAN terminal 100 transmits EAPoL-Start to the base station 510.
  • step S206 the base station 510 transmits EAP-Request / Identity to the WLAN terminal 100.
  • step S208 the WLAN terminal 100 transmits the EAP-Request / Identity received in step S206 to the WWAN terminal 200.
  • This message is a message requesting the WWAN terminal 200 to generate an Identity required for EAP-AKA.
  • the WWAN terminal 200 refers to the subscriber identification module 230 that the WWAN terminal 200 has and generates an Identity.
  • the control unit 240 generates Identity based on information recorded on a SIM card that is the subscriber identification module 230.
  • the authentication protocol is EAP-AKA
  • Identity is generated based on IMSI.
  • the IMSI format is as follows. ⁇ MCC: 3 digits> ⁇ MNC: 2 or 3 digits> ⁇ MSIN: Maximum 10 digits>
  • MCC Mobile Country Code
  • MNC Mobile Network Code
  • MSIN Mobile Subscriber Identification Number
  • step S212 the WWAN terminal 200 returns EAP-Response / Identity to the WLAN terminal 100. This message stores the Identity generated in step S210.
  • step S214 the WLAN terminal 100 transfers the received EAP-Response / Identity to the base station 510.
  • step S216 the base station 510 transmits RADIUS-Access-Request to the authentication server 340.
  • the Identity generated by the WWAN terminal 200 is stored.
  • the authentication server 340 transmits a Retrieval-Authentication-Vector to the subscriber information server 330, and requests an authentication vector for Identity.
  • the Identity generated by the WWAN terminal 200 is stored.
  • An authentication vector is a set of information required for authenticating a connected terminal. In the case of EAP-AKA, the authentication vector includes the following information.
  • RAND random value. Used as a challenge.
  • AUTN A value for the terminal to authenticate the network.
  • XRES expected response value for challenge.
  • IK Message integrity verification key.
  • CK Key for message encryption.
  • step S220 the subscriber information server 330 executes the AKA algorithm and generates an authentication vector corresponding to the Identity stored in the received message.
  • step S222 the subscriber information server 330 transmits the generated authentication vector to the authentication server 340.
  • step S224 the authentication server 340 transmits RADIUS-Access-Challenge to the base station 510.
  • the authentication vector generated by the subscriber information server 330 is stored.
  • the authentication server 340 newly calculates a MAC (Message Authentication Code) and adds it to the message. This MAC is used by the WLAN terminal 100 to verify the integrity of this message.
  • MAC Message Authentication Code
  • step S226 the base station 510 transmits EAP-Request / AKA-Challenge to the WLAN terminal 100.
  • This message includes authentication vectors RAND and AUTN, and MAC.
  • the authentication vectors XRES, IK, and CK are held by the base station 510 and are not transmitted to the WLAN terminal 100.
  • This message is a message requesting the WWAN terminal 200 to generate a response value (RES) and a session key (IK, CK).
  • step S230 the WWAN terminal 200 executes the AKA algorithm and generates the RES, MAC, and session key (IK, CK) corresponding to the received EAP-Request / AKA-Challenge.
  • step S232 the WWAN terminal 200 transmits EAP-Response / AKA-Challenge to the WLAN terminal 100.
  • the RES, MAC, and session key generated by the WWAN terminal 200 are stored.
  • step S234 the WLAN terminal 100 transfers the received EAP-Response / AKA-Challenge to the base station 510.
  • step S 236 the base station 510 transmits RADIUS-Access-Request to the authentication server 340.
  • This message stores the RES, MAC, and session keys (IK, CK) generated by the WWAN terminal 200.
  • step S2308 the authentication server 340 verifies the received RES. Specifically, the authentication server 340 verifies that the RES generated by the WWAN terminal 200 matches the XRES generated by the subscriber information server 330 and the integrity of the message by MAC.
  • step S240 the authentication server 340 transmits RADIUS-Access-Accept to the base station 510. This message indicates that the connection is permitted.
  • step S242 the base station 510 transmits EAP-Success to the WLAN terminal 100. This message indicates that the authentication process has been successful for the WLAN terminal 100.
  • step S244 the base station 510 transmits EAPoL-Key to the WLAN terminal 100. This message is used to send a key for encrypted communication used between the WLAN terminal 100 and the base station 510.
  • step S246 the connection for WLAN communication is completed between the WLAN terminal 100 and the base station 510. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the base station 510.
  • the WLAN terminal 100 performs switching of network connection destinations such as connection to a WLAN or use of tethering at various occasions.
  • network connection destinations such as connection to a WLAN or use of tethering at various occasions.
  • determination of switching of a network connection destination by the WLAN terminal 100 will be described.
  • FIG. 10 is a flowchart illustrating an example of the flow of network switching processing executed in the WLAN terminal 100 according to the present embodiment.
  • step S302 the control unit 130 searches for a surrounding wireless network. Specifically, the control unit 130 searches for a network that matches the policy received from the WWAN terminal 200 and determines whether there is a WLAN 500 with high priority available in the surrounding area.
  • step S304 the control unit 130 determines whether or not to end the network search. For example, the control unit 130 determines to end when a user operation instructing the end of network search or when the power is turned off, and determines that the other does not end.
  • step S304 / YES If it is determined to end (S304 / YES), the process ends. On the other hand, if it is determined not to end (S304 / NO), the network search is continued, and in step S306, the control unit 130 determines whether there is a network that matches the policy.
  • step S308 the control unit 130 determines whether or not the public WLAN service is currently being used.
  • step S308 If it is determined that the public WLAN service is being used (S308 / YES), the process returns to step S302 again.
  • step S310 the control unit 130 performs a tethering end process. Note that this step may be omitted when the WLAN terminal 100 is not tethering.
  • step S312 the control unit 130 performs connection processing to the WLAN 500. Since the processing here is as described with reference to FIG. 7, the description thereof is omitted. Thereafter, the process returns to step S302 again.
  • step S316 If it is determined in step S306 that there is no WLAN 500 that matches the policy (S306 / NO), in step S314, the control unit 130 determines whether tethering is currently being used.
  • step S302 If it is determined that tethering is being used (S314 / YES), the process returns to step S302 again.
  • the WLAN terminal 100 When it is determined that tethering is not being used (S314 / NO), the WLAN terminal 100 starts tethering in step S316. Then, the process returns to step S302 again.
  • the WLAN terminal 100 periodically updates the policy and keeps the policy stored in the storage unit 120 in the latest state. As a result, the WLAN terminal 100 can access a public WLAN with better connection conditions.
  • the wireless communication device 100 and the wireless communication device 200 include a smartphone, a tablet PC (Personal Computer), a notebook PC, a mobile terminal such as a portable game terminal or a digital camera, a television receiver, a printer, a digital scanner, a network storage, or the like. It may be realized as an in-vehicle terminal such as a fixed terminal or a car navigation device.
  • the wireless communication device 100 and the wireless communication device 200 are terminals (MTC (Machine Type Communication) such as smart meters, vending machines, remote monitoring devices, or point-of-sale (POS) terminals that perform M2M (Machine To Machine) communication. ) (Also referred to as a terminal).
  • the wireless communication device 100 and the wireless communication device 200 may be wireless communication modules (for example, integrated circuit modules configured by one die) mounted on these terminals.
  • FIG. 11 is a block diagram illustrating an example of a schematic configuration of a smartphone 900 to which the technology according to the present disclosure can be applied.
  • the smartphone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 913, an antenna switch 914, an antenna 915, A bus 917, a battery 918, and an auxiliary controller 919 are provided.
  • the processor 901 may be, for example, a CPU (Central Processing Unit) or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smartphone 900.
  • the memory 902 includes a RAM (Random Access Memory) and a ROM (Read Only Memory), and stores programs and data executed by the processor 901.
  • the storage 903 can include a storage medium such as a semiconductor memory or a hard disk.
  • the external connection interface 904 is an interface for connecting an external device such as a memory card or a USB (Universal Serial Bus) device to the smartphone 900.
  • the camera 906 includes, for example, an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and generates a captured image.
  • the sensor 907 may include a sensor group such as a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
  • the microphone 908 converts sound input to the smartphone 900 into an audio signal.
  • the input device 909 includes, for example, a touch sensor that detects a touch on the screen of the display device 910, a keypad, a keyboard, a button, or a switch, and receives an operation or information input from a user.
  • the display device 910 has a screen such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900.
  • the speaker 911 converts an audio signal output from the smartphone 900 into audio.
  • the wireless communication interface 913 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and performs wireless communication.
  • the wireless communication interface 913 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
  • the wireless communication interface 913 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct (registered trademark).
  • Wi-Fi Direct unlike the ad hoc mode, one of two terminals operates as an access point, but communication is performed directly between the terminals.
  • the wireless communication interface 913 can typically include a baseband processor, an RF (Radio Frequency) circuit, a power amplifier, and the like.
  • the wireless communication interface 913 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
  • the wireless communication interface 913 may support other types of wireless communication methods such as a short-range wireless communication method, a proximity wireless communication method, or a cellular communication method in addition to the wireless LAN method.
  • the antenna switch 914 switches the connection destination of the antenna 915 among a plurality of circuits (for example, circuits for different wireless communication schemes) included in the wireless communication interface 913.
  • the antenna 915 includes a single antenna element or a plurality of antenna elements (for example, a plurality of antenna elements constituting a MIMO antenna), and is used for transmission and reception of radio signals by the radio communication interface 913.
  • the smartphone 900 is not limited to the example of FIG. 11, and may include a plurality of antennas (for example, an antenna for a wireless LAN and an antenna for a proximity wireless communication method). In that case, the antenna switch 914 may be omitted from the configuration of the smartphone 900.
  • the bus 917 connects the processor 901, memory 902, storage 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 913, and auxiliary controller 919 to each other.
  • the battery 918 supplies power to each block of the smartphone 900 illustrated in FIG. 11 through a power supply line partially illustrated by a broken line in the drawing.
  • the auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode.
  • the smartphone 900 illustrated in FIG. 11 can operate as the wireless communication device 100.
  • the wireless communication unit 110, the storage unit 120, and the control unit 130 described with reference to FIG. 4 may be implemented in the wireless communication interface 913.
  • at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
  • the smartphone 900 illustrated in FIG. 11 can operate as the wireless communication device 200.
  • the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 913.
  • at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
  • the smartphone 900 may operate as a wireless access point (software AP) when the processor 901 executes the access point function at the application level. Further, the wireless communication interface 913 may have a wireless access point function.
  • FIG. 12 is a block diagram illustrating an example of a schematic configuration of a car navigation device 920 to which the technology according to the present disclosure can be applied.
  • the car navigation device 920 includes a processor 921, a memory 922, a GPS (Global Positioning System) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, and wireless communication.
  • An interface 933, an antenna switch 934, an antenna 935, and a battery 938 are provided.
  • the processor 921 may be a CPU or SoC, for example, and controls the navigation function and other functions of the car navigation device 920.
  • the memory 922 includes RAM and ROM, and stores programs and data executed by the processor 921.
  • the GPS module 924 measures the position (for example, latitude, longitude, and altitude) of the car navigation device 920 using GPS signals received from GPS satellites.
  • the sensor 925 may include a sensor group such as a gyro sensor, a geomagnetic sensor, and an atmospheric pressure sensor.
  • the data interface 926 is connected to the in-vehicle network 941 through a terminal (not shown), for example, and acquires data generated on the vehicle side such as vehicle speed data.
  • the content player 927 reproduces content stored in a storage medium (for example, CD or DVD) inserted into the storage medium interface 928.
  • the input device 929 includes, for example, a touch sensor, a button, or a switch that detects a touch on the screen of the display device 930, and receives an operation or information input from the user.
  • the display device 930 has a screen such as an LCD or an OLED display, and displays a navigation function or an image of content to be reproduced.
  • the speaker 931 outputs the navigation function or the audio of the content to be played back.
  • the wireless communication interface 933 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and executes wireless communication.
  • the wireless communication interface 933 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
  • the wireless communication interface 933 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct.
  • the wireless communication interface 933 may typically include a baseband processor, an RF circuit, a power amplifier, and the like.
  • the wireless communication interface 933 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
  • the wireless communication interface 933 may support other types of wireless communication systems such as a short-range wireless communication system, a proximity wireless communication system, or a cellular communication system.
  • the antenna switch 934 switches the connection destination of the antenna 935 among a plurality of circuits included in the wireless communication interface 933.
  • the antenna 935 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 933.
  • the car navigation device 920 is not limited to the example of FIG. 12, and may include a plurality of antennas. In that case, the antenna switch 934 may be omitted from the configuration of the car navigation device 920.
  • the battery 938 supplies power to each block of the car navigation apparatus 920 shown in FIG. 12 through a power supply line partially shown by a broken line in the drawing. Further, the battery 938 stores electric power supplied from the vehicle side.
  • the car navigation device 920 illustrated in FIG. for example, the wireless communication unit 110, the storage unit 120, and the control unit 130 described with reference to FIG. 4 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
  • the 12 may operate as the wireless communication device 200.
  • the car navigation device 920 illustrated in FIG. for example, the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
  • the technology according to the present disclosure may be realized as an in-vehicle system (or vehicle) 940 including one or more blocks of the car navigation device 920 described above, an in-vehicle network 941, and a vehicle side module 942.
  • vehicle-side module 942 generates vehicle-side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.
  • FIG. 13 is a block diagram illustrating an example of a schematic configuration of a wireless access point 950 to which the technology according to the present disclosure can be applied.
  • the wireless access point 950 includes a controller 951, a memory 952, an input device 954, a display device 955, a network interface 957, a wireless communication interface 963, an antenna switch 964, and an antenna 965.
  • the controller 951 may be a CPU or a DSP (Digital Signal Processor), for example, and various functions (for example, access restriction, routing, encryption, firewall) of the IP (Internet Protocol) layer and higher layers of the wireless access point 950 And log management).
  • the memory 952 includes a RAM and a ROM, and stores programs executed by the controller 951 and various control data (for example, a terminal list, a routing table, an encryption key, security settings, and a log).
  • the input device 954 includes, for example, a button or a switch and receives an operation from the user.
  • the display device 955 includes an LED lamp and the like, and displays the operation status of the wireless access point 950.
  • the network interface 957 is a wired communication interface for connecting the wireless access point 950 to the wired communication network 958.
  • the network interface 957 may have a plurality of connection terminals.
  • the wired communication network 958 may be a LAN such as Ethernet (registered trademark), or may be a WAN (Wide Area Network).
  • the wireless communication interface 963 supports one or more of wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and provides a wireless connection as an access point to nearby terminals.
  • the wireless communication interface 963 may typically include a baseband processor, an RF circuit, a power amplifier, and the like.
  • the wireless communication interface 963 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
  • the antenna switch 964 switches the connection destination of the antenna 965 among a plurality of circuits included in the wireless communication interface 963.
  • the antenna 965 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 963.
  • the wireless access point 950 shown in FIG. 13 can operate as the WWAN terminal 200.
  • the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 963.
  • at least a part of these functions may be implemented in the controller 951.
  • the embodiments of the technology according to the present disclosure have been described in detail with reference to FIGS. 1 to 13.
  • the WLAN terminal 100 based on the policy received from the WWAN terminal 200 in the wireless communication with the WWAN terminal 200 connected to the WWAN 300 and performing wireless communication, and the WLAN terminal 100 connected to the WLAN 500 and performing wireless communication.
  • the WLAN 500 to be connected is selected. Since the WLAN terminal 100 itself using the public WLAN selects the connection destination, for example, even when there are a plurality of connection destination candidates, the WLAN terminal 100 can easily select an appropriate connection destination.
  • the WLAN terminal 100 can acquire a policy from the WWAN terminal 200 having the subscriber identification information even if the WLAN terminal 100 does not have the subscriber identification information. Therefore, the WLAN terminal 100 can select a public WLAN using a policy even when the radio wave environment changes due to movement, for example. Thus, since the WLAN terminal 100 can select a public WLAN using a policy, it can easily connect to the Internet.
  • the WLAN terminal 100 may continuously search the surrounding network and switch the connection destination to the WLAN 500 according to the search result. . Thereby, since the communication amount by the WWAN terminal 200 can be reduced, the power consumption of the WWAN terminal 200 is reduced and the traffic of the WWAN communication is also reduced.
  • the policy is transmitted to the WLAN terminal 100.
  • the WLAN terminal 100 can select the WLAN 500 using the policy.
  • the WWAN terminal 200 modifies the policy to be transmitted based on the connection result of the WLAN terminal 100 to the WLAN 500. Thereby, the WLAN terminal 100 can be easily connected to a more appropriate WLAN 500.
  • each device described in this specification may be realized using any of software, hardware, and a combination of software and hardware.
  • the program constituting the software is stored in advance in a storage medium (non-transitory medium) provided inside or outside each device.
  • Each program is read into a RAM when executed by a computer and executed by a processor such as a CPU.
  • a first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network;
  • a second wireless communication unit connected to the second network for wireless communication;
  • a control unit that selects the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit;
  • a wireless communication device comprising: (2) The wireless communication apparatus according to (1), wherein the policy includes a network priority and an access ID for identifying the network.
  • the control unit selects the second network to be connected in accordance with the priority order included in the policy.
  • the wireless communication device according to any one of (1) to (3), wherein the control unit selects the second network to be connected based further on a received radio wave intensity in the second wireless communication unit. .
  • the control unit selects the second network to be connected from the surrounding networks searched by the second wireless communication unit based on the policy, any one of (1) to (4) The wireless communication device according to one item.
  • the control unit controls the second wireless communication unit to search for a surrounding network for the second network selected based on the policy, any one of (1) to (4) The wireless communication device according to one item.
  • Wireless communication device The control unit continuously performs the search after connecting to the second network, and switches the second network to be connected according to a search result, according to any one of (5) to (7) The wireless communication device described. (9) The wireless communication according to any one of (1) to (8), wherein the control unit controls the first wireless communication unit to transmit a request requesting transmission of the policy to the wireless terminal. apparatus. (10) The control unit performs authentication to the second network by EAP (Extensible Authentication Protocol) authentication using subscriber identification information possessed by the wireless terminal, and any one of (1) to (9) A wireless communication device according to 1. (11) The wireless communication apparatus according to any one of (1) to (10), wherein the first wireless communication unit and the second wireless communication unit perform wireless communication using the same communication method.
  • EAP Extensible Authentication Protocol
  • the wireless communication device according to any one of (1) to (11), wherein the second wireless communication unit performs wireless communication using a wireless local area network (LAN).
  • the wireless communication device according to any one of (1) to (12), wherein the first wireless communication unit performs wireless communication using a short-range wireless communication method or a wireless LAN.
  • the wireless communication device according to any one of (1) to (13), wherein the first network is a mobile communication network.
  • the wireless communication apparatus according to any one of (1) to (14), wherein the second network is a public wireless LAN.
  • a first wireless communication unit that performs wireless communication by connecting to the first network
  • a second wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the second network
  • a control unit that controls the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal
  • a wireless communication device comprising: (17) The control unit controls the first wireless communication unit to acquire the policy of the second network in response to a request received from the wireless terminal by the second wireless communication unit, (16 ) Wireless communication device.
  • the wireless communication apparatus according to (16) or (17), wherein the control unit corrects the policy based on a connection result of the wireless terminal to the second network.
  • a wireless communication method including: (20) Connecting to the first network by the first wireless communication unit to perform wireless communication; Performing wireless communication with a wireless terminal that performs wireless communication by connecting to the second network by the second wireless communication unit; Controlling the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal;
  • a wireless communication method including:

Abstract

[Problem] To provide a wireless communication device and wireless communication method, whereby connection to the internet is facilitated. [Solution] This wireless communication device is provided with: a first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by being connected to a first network; a second wireless communication unit that performs wireless communication by being connected to second networks; and a control unit that selects, on the basis of second network policy received from the wireless terminal by means of the first wireless communication unit, a second network to be connected with by means of the second wireless communication unit.

Description

無線通信装置及び無線通信方法Wireless communication apparatus and wireless communication method
　本開示は、無線通信装置及び無線通信方法に関する。 The present disclosure relates to a wireless communication device and a wireless communication method.
　近年、インターネットを用いた多様なサービスが登場してきており、外出先でも容易にインターネットにアクセスする手段が求められている。例えばスマートフォン及び携帯電話等のＷＷＡＮ（Wireless　Wide　Area　Network）通信機能を有する端末は、外出先であっても、移動体通信網を介してインターネットにアクセスすることが可能である。一方、ＷＷＡＮ通信機能を有さない端末は、無線ＬＡＮ（ＷＬＡＮ：Wireless　Local　Area　Network）等の他の通信方式を用いてインターネットにアクセスすることが要されていた。ＷＬＡＮ等のネットワークへ接続する際は、アクセスポイントの検索、ＩＤ（identifier）及びパスワードの入力等の処理が要される場合があり、このような処理をより容易にするための技術が求められている。 In recent years, various services using the Internet have appeared, and there is a demand for means for easily accessing the Internet even when away from home. For example, a terminal having a WWAN (Wireless Wide Area Network) communication function, such as a smartphone and a mobile phone, can access the Internet via a mobile communication network even when the user is away from home. On the other hand, a terminal that does not have a WWAN communication function is required to access the Internet by using another communication method such as a wireless LAN (WLAN). When connecting to a network such as a WLAN, processing such as searching for an access point, inputting an ID (identifier) and a password may be required, and a technique for making such processing easier is required. Yes.
　例えば、下記特許文献１では、モバイルデバイスに、ホームサービスプロバイダ情報、ポリシー情報、及び予めプロビジョンされた認証情報を含む加入情報を格納しておき、利用可能なＷｉ－Ｆｉ（登録商標）に自動接続する技術が開示されている。 For example, in Patent Document 1 below, subscription information including home service provider information, policy information, and pre-provisioned authentication information is stored in a mobile device, and automatically used on Wi-Fi (registered trademark). A technique for connecting is disclosed.
特開２０１３－１７１６４号公報JP 2013-17164 A
　しかし、この技術分野では、さらなる性能向上が望まれている。そこで、本開示では、より容易にインターネットに接続することが可能な、新規かつ改良された無線通信装置及び無線通信方法を提案する。 However, further performance improvement is desired in this technical field. Therefore, the present disclosure proposes a new and improved wireless communication apparatus and wireless communication method that can be more easily connected to the Internet.
　本開示によれば、第１のネットワークに接続して無線通信を行う無線端末との無線通信を行う第１の無線通信部と、第２のネットワークに接続して無線通信を行う第２の無線通信部と、前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択する制御部と、を備える無線通信装置が提供される。 According to the present disclosure, the first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network, and the second wireless that performs wireless communication by connecting to the second network. A control unit that selects the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the communication unit and the first wireless communication unit Is provided.
　また、本開示によれば、第１のネットワークに接続して無線通信を行う第１の無線通信部と、第２のネットワークに接続して無線通信を行う無線端末との無線通信を行う第２の無線通信部と、前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御する制御部と、を備える無線通信装置が提供される。 Further, according to the present disclosure, the second wireless communication is performed between the first wireless communication unit that performs wireless communication by connecting to the first network and the wireless terminal that performs wireless communication by connecting to the second network. And the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal. And a control unit that provides a wireless communication device.
　また、本開示によれば、第１のネットワークに接続して無線通信を行う無線端末との無線通信を第１の無線通信部により行うことと、第２の無線通信部により第２のネットワークに接続して無線通信を行うことと、前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択することと、を含む無線通信方法が提供される。 In addition, according to the present disclosure, the first wireless communication unit performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network, and the second wireless communication unit establishes the second network. Connecting and performing wireless communication, and connecting the second wireless communication unit with the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit Selecting a network is provided.
　また、本開示によれば、第１の無線通信部により第１のネットワークに接続して無線通信を行うことと、第２のネットワークに接続して無線通信を行う無線端末との無線通信を第２の無線通信部により行うことと、前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御することと、を含む無線通信方法が提供される。 Further, according to the present disclosure, the first wireless communication unit connects to the first network to perform wireless communication, and the wireless communication with the wireless terminal that connects to the second network and performs wireless communication is performed first. And the second wireless communication unit transmits the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal. And a wireless communication method including controlling a communication unit.
　以上説明したように本開示によれば、より容易にインターネットに接続することが可能である。
　なお、上記の効果は必ずしも限定的なものではなく、上記の効果とともに、または上記の効果に代えて、本明細書に示されたいずれかの効果、または本明細書から把握され得る他の効果が奏されてもよい。 As described above, according to the present disclosure, it is possible to connect to the Internet more easily.
Note that the above effects are not necessarily limited, and any of the effects shown in the present specification, or other effects that can be grasped from the present specification, together with or in place of the above effects. May be played.
本開示の一実施形態に係る無線通信システムの概要について説明するための図である。1 is a diagram for describing an overview of a wireless communication system according to an embodiment of the present disclosure. FIG. 本開示の一実施形態に係る無線通信システムの概要について説明するための図である。1 is a diagram for describing an overview of a wireless communication system according to an embodiment of the present disclosure. FIG. 本実施形態に係る無線通信システムの論理的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a logical structure of the radio | wireless communications system which concerns on this embodiment. 本実施形態に係るＷＬＡＮ端末の論理的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a logical structure of the WLAN terminal which concerns on this embodiment. 本実施形態に係るポリシーの一例を説明するための説明図である。It is explanatory drawing for demonstrating an example of the policy which concerns on this embodiment. 本実施形態に係るＷＷＡＮ端末の論理的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a logical structure of the WWAN terminal which concerns on this embodiment. 本実施形態に係る無線通信システムにおいて実行される接続処理の流れの一例を示すシーケンス図である。It is a sequence diagram which shows an example of the flow of the connection process performed in the radio | wireless communications system which concerns on this embodiment. 本実施形態に係る無線通信システムにおいて実行されるＥＡＰ認証処理の流れの一例を示すシーケンス図である。It is a sequence diagram which shows an example of the flow of the EAP authentication process performed in the radio | wireless communications system which concerns on this embodiment. 本実施形態に係る無線通信システムにおいて実行されるＥＡＰ認証処理の流れの一例を示すシーケンス図である。It is a sequence diagram which shows an example of the flow of the EAP authentication process performed in the radio | wireless communications system which concerns on this embodiment. 本実施形態に係るＷＬＡＮ端末において実行されるネットワーク切替処理の流れの一例を示すフローチャートである。It is a flowchart which shows an example of the flow of the network switching process performed in the WLAN terminal which concerns on this embodiment. スマートフォンの概略的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a schematic structure of a smart phone. カーナビゲーション装置の概略的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a schematic structure of a car navigation apparatus. 無線アクセスポイントの概略的な構成の一例を示すブロック図である。It is a block diagram which shows an example of a schematic structure of a wireless access point.
　以下に添付図面を参照しながら、本開示の好適な実施の形態について詳細に説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。 Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.
　また、本明細書及び図面において、実質的に同一の機能構成を有する要素を、同一の符号の後に異なるアルファベットを付して区別する場合もある。例えば、実質的に同一の機能構成を有する複数の要素を、必要に応じて無線通信装置１００Ａ、１００Ｂ及び１００Ｃのように区別する。ただし、実質的に同一の機能構成を有する複数の要素の各々を特に区別する必要がない場合、同一符号のみを付する。例えば、無線通信装置１００Ａ、１００Ｂ及び１００Ｃを特に区別する必要が無い場合には、単に無線通信装置１００と称する。 In the present specification and drawings, elements having substantially the same functional configuration may be distinguished by adding different alphabets after the same reference numerals. For example, a plurality of elements having substantially the same functional configuration are distinguished as necessary, such as the wireless communication devices 100A, 100B, and 100C. However, when there is no need to particularly distinguish each of a plurality of elements having substantially the same functional configuration, only the same reference numerals are given. For example, when it is not necessary to distinguish between the wireless communication devices 100A, 100B, and 100C, they are simply referred to as the wireless communication device 100.
　なお、説明は以下の順序で行うものとする。
　　１．概要
　　２．構成例
　　　２－１．無線通信システムの構成例
　　　２－２．ＷＬＡＮ端末の構成例
　　　２－３．ＷＷＡＮ端末の構成例
　　３．動作処理
　　　３－１．接続処理
　　　３－２．ＥＡＰ認証処理
　　　３－３．ネットワーク切替処理
　　４．応用例
　　５．まとめ The description will be made in the following order.
1. Overview 2. Configuration example 2-1. Configuration example of wireless communication system 2-2. Configuration example of WLAN terminal 2-3. 2. Configuration example of WWAN terminal Operation processing 3-1. Connection processing 3-2. EAP authentication processing 3-3. Network switching process Application example 5. Summary
　＜１．概要＞
　まず、図１、図２を参照して、本開示の一実施形態に係る無線通信システム１の概要について説明する。 <1. Overview>
First, an overview of a wireless communication system 1 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2.
　図１及び図２は、本開示の一実施形態に係る無線通信システム１の概要について説明するための図である。図１及び図２に示すように、無線通信システム１は、無線通信装置１００及び無線通信装置２００を含む。 FIG.1 and FIG.2 is a figure for demonstrating the outline | summary of the radio | wireless communications system 1 which concerns on one Embodiment of this indication. As illustrated in FIGS. 1 and 2, the wireless communication system 1 includes a wireless communication device 100 and a wireless communication device 200.
　無線通信装置１００は、他の装置との無線通信が可能な無線端末である。図１の例では、無線通信装置１００は、ノートＰＣである。無線通信装置１００は、例えばＩＥＥＥ（Institute　of　Electrical　and　Electronics　Engineers）８０２．１１ａ、１１ｂ、１１ｇ、１１ｎ、１１ａｃ又は１１ａｄなどの通信方式に従って、ＷＬＡＮに接続することができるＷＬＡＮ端末である。また、図１に示すように、ＷＡＬＮ端末１００は、無線通信装置２００との無線接続を形成することができる。この無線接続は、例えばＢｌｕｅｔｏｏｔｈ（登録商標）、ＮＦＣ（Near　field　communication）等の任意の通信方式に従って形成され得る。ＷＬＡＮ端末１００は、例えばユーザの自宅等で運用されるＷＬＡＮなどのネットワーク情報が既知のＷＬＡＮとの接続は可能であるが、外出先等のネットワーク情報が未知のＷＬＡＮとの接続は困難である。なお、無線通信装置１００は、ノートＰＣ以外にも、ＰＣ、タブレット端末、ＰＤＡ（Ｐｅｒｓｏｎａｌ　Ｄｉｇｉｔａｌ　Ａｓｓｉｓｔａｎｔｓ）、ＨＭＤ（Ｈｅａｄ　Ｍｏｕｎｔｅｄ　Ｄｉｓｐｌａｙ）、ヘッドセット、デジタルカメラ、デジタルビデオカメラ、スマートフォン、携帯電話端末、携帯用音楽再生装置、携帯用映像処理装置または携帯用ゲーム機器等として実現されてもよい。 The wireless communication device 100 is a wireless terminal capable of wireless communication with other devices. In the example of FIG. 1, the wireless communication device 100 is a notebook PC. The wireless communication device 100 is a WLAN terminal that can be connected to a WLAN according to a communication method such as IEEE (Institute of Electrical and Electronics Engineers) 802.11a, 11b, 11g, 11n, 11ac, or 11ad. As shown in FIG. 1, the WALN terminal 100 can form a wireless connection with the wireless communication device 200. This wireless connection can be formed according to an arbitrary communication method such as Bluetooth (registered trademark) or NFC (Near field communication). The WLAN terminal 100 can be connected to a WLAN whose network information is known, such as a WLAN that is operated at the user's home, for example, but is difficult to connect to a WLAN whose network information such as whereabouts is unknown. In addition to the notebook PC, the wireless communication device 100 includes a PC, a tablet terminal, a PDA (Personal Digital Assistant), an HMD (Head Mounted Display), a headset, a digital camera, a digital video camera, a smartphone, a mobile phone terminal, a mobile phone, and the like. It may be realized as a music playback device, a portable video processing device, a portable game device, or the like.
　無線通信装置２００は、他の装置との無線通信が可能な無線端末である。図１の例では、無線通信装置２００は、スマートフォンである。無線通信装置２００は、例えばＷＬＡＮ端末１００との無線接続を形成することができる。また、無線通信装置２００は、ＷＷＡＮ通信機能を有し、ＷＷＡＮに接続することができるＷＷＡＮ端末である。ＷＷＡＮ端末２００は、移動体通信網に接続するための加入者識別情報を有しており、加入者識別情報を用いた認証処理を行って、移動体通信網等の無線ネットワーク３００との無線接続を形成することができる。加入者識別情報は、例えばＳＩＭカード（Subscriber　Identity　Module　Card）に格納されるＩＭＳＩ（International　Mobile　Subscriber　Identity）である。ＷＷＡＮ端末２００は、ＷＷＡＮ通信機能を用いて無線ネットワーク３００に接続し、サービスネットワーク４００により提供されるサービスを利用可能である。なお、無線通信装置２００は、スマートフォン以外にも、ノートＰＣ、ＰＣ、タブレット端末、ＰＤＡ、ＨＭＤ、ヘッドセット、デジタルカメラ、デジタルビデオカメラ、携帯電話端末、携帯用音楽再生装置、携帯用映像処理装置または携帯用ゲーム機器等として実現されてもよい。 The wireless communication device 200 is a wireless terminal capable of wireless communication with other devices. In the example of FIG. 1, the wireless communication device 200 is a smartphone. The wireless communication apparatus 200 can form a wireless connection with the WLAN terminal 100, for example. The wireless communication apparatus 200 is a WWAN terminal that has a WWAN communication function and can be connected to the WWAN. The WWAN terminal 200 has subscriber identification information for connecting to a mobile communication network, performs authentication processing using the subscriber identification information, and establishes wireless connection with a wireless network 300 such as a mobile communication network. Can be formed. The subscriber identification information is, for example, an IMSI (International Mobile Subscriber Identity) stored in a SIM card (Subscriber Identity Module Card). The WWAN terminal 200 can use the service provided by the service network 400 by connecting to the wireless network 300 using the WWAN communication function. The wireless communication device 200 is not only a smartphone but also a notebook PC, PC, tablet terminal, PDA, HMD, headset, digital camera, digital video camera, mobile phone terminal, portable music player, portable video processing device. Alternatively, it may be realized as a portable game device or the like.
　無線ネットワーク３００は、移動体通信網等のＷＷＡＮ（第１のネットワーク）である。例えば、ＷＷＡＮ３００は、ＬＴＥ（Long　Term　Evolution）、ＬＴＥ－Ａ（LTE-Advanced）、ＧＳＭ（登録商標）、ＵＭＴＳ、Ｗ－ＣＤＭＡ、又はＣＤＭＡ２０００などの任意の無線通信方式に従って運用される。例えば、ＷＷＡＮ３００は、基地局３１０により運用されるセルの範囲内に位置する無線通信装置２００から接続される。 The wireless network 300 is a WWAN (first network) such as a mobile communication network. For example, the WWAN 300 is operated according to an arbitrary wireless communication system such as LTE (Long Term Evolution), LTE-A (LTE-Advanced), GSM (registered trademark), UMTS, W-CDMA, or CDMA2000. For example, the WWAN 300 is connected from the wireless communication device 200 located within the range of the cell operated by the base station 310.
　サービスネットワーク４００は、インターネットなどの公衆ネットワークである。ＷＷＡＮ端末２００は、ＷＷＡＮ３００を介してサービスネットワーク４００にアクセスすることができる。 The service network 400 is a public network such as the Internet. The WWAN terminal 200 can access the service network 400 via the WWAN 300.
　ここで、ＷＷＡＮ通信機能を有さない端末は、ＷＷＡＮ３００を介したインターネットへのアクセスは困難である。このような場合であっても、外出先等でのインターネットへのアクセスを実現するための手段として、例えばＷＷＡＮ通信可能な端末によるテザリング、又は公衆ＷＬＡＮの利用が挙げられる。 Here, it is difficult for a terminal having no WWAN communication function to access the Internet via the WWAN 300. Even in such a case, examples of means for realizing access to the Internet while away from home include tethering by a terminal capable of WWAN communication or use of a public WLAN.
　テザリングとは、スマートフォン等のＷＷＡＮ通信機能を有する端末を介して、他の通信端末がＷＷＡＮ３００に接続する技術である。図１に示すように、ＷＷＡＮ端末２００は、ＷＷＡＮ３００及びＷＬＡＮ端末１００と接続可能である。このため、ＷＷＡＮ端末２００は、ＷＷＡＮ３００とＷＬＡＮ端末１００との通信を中継するアクセスポイントとして機能して、テザリングを実現することができる。これにより、ＷＬＡＮ端末１００は、サービスネットワーク４００により提供されるサービスを利用可能となる。 Tethering is a technology for connecting other communication terminals to the WWAN 300 via a terminal having a WWAN communication function such as a smartphone. As shown in FIG. 1, the WWAN terminal 200 can be connected to the WWAN 300 and the WLAN terminal 100. For this reason, the WWAN terminal 200 functions as an access point that relays communication between the WWAN 300 and the WLAN terminal 100, and can realize tethering. As a result, the WLAN terminal 100 can use the service provided by the service network 400.
　テザリングは、ＷＷＡＮ端末２００がＷＷＡＮ通信可能なエリアのどこに位置していても利用可能である。しかし、テザリング利用のための端末設定を、ＷＷＡＮ端末２００及びＷＬＡＮ端末１００の両方で行うことが要されるため、ユーザの利便性が損なわれていた。また、テザリング中はアクセスポイントとして機能するＷＷＡＮ端末２００の電力消費が大きい。 Tethering can be used wherever the WWAN terminal 200 is located in an area where WWAN communication is possible. However, since it is necessary to perform terminal setting for tethering use in both the WWAN terminal 200 and the WLAN terminal 100, the convenience of the user is impaired. Further, during tethering, the power consumption of the WWAN terminal 200 functioning as an access point is large.
　他方、公衆ＷＬＡＮとは、ＷＬＡＮを利用したインターネットへの接続を提供するサービスである。以下、図２を参照して、公衆ＷＬＡＮを用いた通信について説明する。図２に示す無線ネットワーク５００は、例えばＷＬＡＮにより運用される公衆ネットワーク（第２のネットワーク）である。図２に示すように、ＷＬＡＮ５００には、ＷＬＡＮ５００Ａ、ＷＬＡＮ５００Ｂを含む複数が存在し得る。ＷＬＡＮ端末１００は、いずれかのＷＬＡＮ５００へ接続して、サービスネットワーク４００に、又はＷＷＡＮ３００をさらに介してサービスネットワーク４００にアクセスすることができる。これにより、ＷＬＡＮ端末１００は、サービスネットワーク４００により提供されるサービスを利用可能となる。 On the other hand, a public WLAN is a service that provides a connection to the Internet using a WLAN. Hereinafter, communication using a public WLAN will be described with reference to FIG. A wireless network 500 shown in FIG. 2 is a public network (second network) operated by a WLAN, for example. As shown in FIG. 2, there may be a plurality of WLAN 500 including WLAN 500A and WLAN 500B. The WLAN terminal 100 can connect to any one of the WLANs 500 to access the service network 400 or further access the service network 400 via the WWAN 300. As a result, the WLAN terminal 100 can use the service provided by the service network 400.
　ここで、スマートフォンのようなＷＷＡＮ通信機能を有する無線端末は、３ＧＰＰ（Third　Generation　Partnership　Project)によって提案されたＡＮＤＳＦ（Access　Network　Discovery　and　Selection　Function)、又はWi-Fi　Allianceによって提案されたWi-Fi　CERTIFIED　Passpointの技術を用いて、周囲の公衆ＷＬＡＮへ接続し自身が有する加入者識別情報を用いてユーザ認証を実施することが可能である。しかし、ノートＰＣの様にＷＷＡＮ通信機能を持たず、加入者識別情報を有さない無線端末では、ユーザ自ら利用可能な公衆ＷＬＡＮを選択し、認証手続きを実施することが要される場合があり、利便性が損なわれていた。 Here, a wireless terminal having a WWAN communication function such as a smartphone is an ANDSF (Access Network Discovery and Selection Function) proposed by 3GPP (Third Generation Partnership Project), or Wi-Fi CERTIFIED proposed by Wi-Fi Alliance. Using Passpoint technology, it is possible to connect to the surrounding public WLAN and perform user authentication using the subscriber identification information possessed by itself. However, in a wireless terminal that does not have a WWAN communication function and does not have subscriber identification information like a notebook PC, it may be necessary to select a public WLAN that can be used by the user and perform an authentication procedure. Convenience was impaired.
　また、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００がＷＷＡＮ通信可能なエリアであれば、どこでもテザリングを利用可能である。しかし、ＷＷＡＮ端末２００は、テザリング動作中はアクセスポイントとして動作するため、周囲のアクセスポイントを探索することが困難であり、公衆ＷＬＡＮが利用可能なエリアに入ってもテザリングを自動的に終了することが困難であった。このため、ユーザがテザリングを意図的に終了する操作を行っており、利便性が損なわれていた。 Further, the WLAN terminal 100 can use tethering anywhere in the area where the WWAN terminal 200 can communicate with WWAN. However, since the WWAN terminal 200 operates as an access point during the tethering operation, it is difficult to search for surrounding access points, and the tethering is automatically terminated even when entering the area where the public WLAN can be used. It was difficult. For this reason, the user performs an operation to intentionally end the tethering, and convenience is impaired.
　ここで、ＡＮＤＳＦでは、ＷＷＡＮ端末２００の位置情報に基づいて、接続先の切り替え（テザリング終了及び公衆ＷＬＡＮへの接続）をＷＬＡＮ端末１００へ指示することが可能である。しかしながら、この技術では、ＷＬＡＮ端末１００における電波環境が未知であるため、適切な公衆ＷＬＡＮの選択及び切り替えが困難な場合があった。例えば、候補となる公衆ＷＬＡＮが複数ある場合に、１度では接続が成功せず、接続先候補を変えて何度も接続が繰り返される場合があり、ネットワーク切り替えに時間がかかったり、失敗したりしていた。 Here, the ANDSF can instruct the WLAN terminal 100 to switch the connection destination (end of tethering and connection to the public WLAN) based on the position information of the WWAN terminal 200. However, in this technique, since the radio wave environment in the WLAN terminal 100 is unknown, it may be difficult to select and switch an appropriate public WLAN. For example, if there are multiple candidate public WLANs, the connection may not be successful at one time, and the connection may be repeated many times by changing the connection destination candidate. Was.
　そこで、上記事情を一着眼点にして本開示の一実施形態に係る無線通信装置を創作するに至った。本開示の一実施形態に係る無線通信装置は、ＷＷＡＮ通信機能及び加入者識別情報を有さない場合であっても、容易に適切な公衆ＷＬＡＮを選択してインターネットを利用することが可能である。以下、図３～図１３を参照して、本開示の一実施形態に係る無線通信装置を含む無線通信システムについて詳細に説明する。 Accordingly, the wireless communication apparatus according to an embodiment of the present disclosure has been created with the above circumstances in mind. A wireless communication apparatus according to an embodiment of the present disclosure can easily select an appropriate public WLAN and use the Internet even when the wireless communication apparatus does not have a WWAN communication function and subscriber identification information. . Hereinafter, a wireless communication system including a wireless communication apparatus according to an embodiment of the present disclosure will be described in detail with reference to FIGS.
　＜２．構成例＞
　［２－１．無線通信システムの構成例］
　図３は、本実施形態に係る無線通信システム１の論理的な構成の一例を示すブロック図である。図３に示すように、無線通信システム１は、ＷＬＡＮ端末１００及びＷＷＡＮ端末２００を含み、ＷＷＡＮ３００、ＷＬＡＮ５００、及びサービスネットワーク４００への無線接続を提供する。 <2. Configuration example>
[2-1. Configuration example of wireless communication system]
FIG. 3 is a block diagram illustrating an example of a logical configuration of the wireless communication system 1 according to the present embodiment. As shown in FIG. 3, the wireless communication system 1 includes a WLAN terminal 100 and a WWAN terminal 200, and provides wireless connection to the WWAN 300, the WLAN 500, and the service network 400.
　（１）ＷＷＡＮ３００
　図３に示すように、ＷＷＡＮ３００は、基地局３１０、ゲートウェイ３２０、加入者情報サーバ３３０、認証サーバ３４０、及びネットワーク情報提供サーバ３５０により運用される。 (1) WWAN300
As shown in FIG. 3, the WWAN 300 is operated by a base station 310, a gateway 320, a subscriber information server 330, an authentication server 340, and a network information providing server 350.
　（１－１）基地局３１０
　基地局３１０は、ＷＷＡＮ通信機能を有する無線端末が、ＷＷＡＮ３００に接続する際の接点となる装置である。例えば、基地局３１０は、ＷＷＡＮ端末２００からの接続を受け付ける。ＬＴＥにおいては、基地局３１０はｅＮＢに相当する。 (1-1) Base station 310
The base station 310 is a device that serves as a contact point when a wireless terminal having a WWAN communication function is connected to the WWAN 300. For example, the base station 310 accepts a connection from the WWAN terminal 200. In LTE, the base station 310 corresponds to an eNB.
　（１－２）ゲートウェイ３２０
　ゲートウェイ３２０は、ＷＷＡＮ３００と他のネットワークとの通信を中継する装置である。例えば、ゲートウェイ３２０は、ＷＷＡＮ３００とサービスネットワーク４００との通信、及びＷＷＡＮ３００とＷＬＡＮ５００との通信を中継する。ＬＴＥにおいては、ゲートウェイ３２０はＰ－ＧＷ（Packet　Data　Network　Gateway）に相当する。 (1-2) Gateway 320
The gateway 320 is a device that relays communication between the WWAN 300 and another network. For example, the gateway 320 relays communication between the WWAN 300 and the service network 400 and communication between the WWAN 300 and the WLAN 500. In LTE, the gateway 320 corresponds to a P-GW (Packet Data Network Gateway).
　（１－３）加入者情報サーバ３３０
　加入者情報サーバ３３０は、ＷＷＡＮ３００への加入者情報を保持する装置である。加入者情報サーバ３３０は、無線端末がＷＷＡＮ３００へ接続する際の認証処理に利用される情報も保持する。ＬＴＥにおいては、加入者情報サーバ３３０はＨＳＳ（Home　Subscriber　Server）に相当する。 (1-3) Subscriber information server 330
The subscriber information server 330 is a device that holds subscriber information for the WWAN 300. The subscriber information server 330 also holds information used for authentication processing when a wireless terminal connects to the WWAN 300. In LTE, the subscriber information server 330 corresponds to an HSS (Home Subscriber Server).
　（１－４）認証サーバ３４０
　認証サーバ３４０は、ＷＷＡＮ３００への接続がＷＷＡＮ３００の加入者による接続であることを認証する装置である。認証サーバ３４０は、加入者情報サーバ３３０を参照してこの認証処理を行い得る。ＬＴＥにおいては、認証サーバ３４０はＡＡＡ（Authentication,　Authorization　and　Accounting）サーバに相当する。 (1-4) Authentication server 340
The authentication server 340 is a device that authenticates that the connection to the WWAN 300 is a connection by a WWAN 300 subscriber. The authentication server 340 can perform this authentication process with reference to the subscriber information server 330. In LTE, the authentication server 340 corresponds to an AAA (Authentication, Authorization and Accounting) server.
　なお、ＷＷＡＮ３００及びＷＬＡＮ５００では、加入者識別情報が認証のために共通して用いられる。つまり、ＷＷＡＮ通信機能を有し、加入者識別情報を用いた認証処理を経てＷＷＡＮ３００への接続が可能な端末は、同じく加入者識別情報を用いた認証処理を経てＷＬＡＮ５００への接続が可能である。認証サーバ３４０は、ＷＬＡＮ５００への接続を行う端末に対しても、及びＷＷＡＮ３００への接続を行う端末に対しても、加入者情報サーバ３３０を参照して認証処理を行う。 In WWAN 300 and WLAN 500, subscriber identification information is commonly used for authentication. That is, a terminal that has a WWAN communication function and can be connected to the WWAN 300 through authentication processing using the subscriber identification information can be connected to the WLAN 500 through authentication processing using the subscriber identification information. . The authentication server 340 refers to the subscriber information server 330 and performs authentication processing for both the terminal that connects to the WLAN 500 and the terminal that connects to the WWAN 300.
　（１－５）ネットワーク情報提供サーバ３５０
　ネットワーク情報提供サーバ３５０は、無線端末が現在接続されている無線ネットワークから他の無線ネットワークへ接続先を切り替える際に必要となる、接続先の無線ネットワークの情報を提供する装置である。例えば、ネットワーク情報提供サーバ３５０は、ＷＷＡＮ端末２００に対して、ＷＬＡＮ５００に接続するためのネットワーク情報を提供し得る。ＬＴＥにおいては、ネットワーク情報提供サーバ３５０はＡＮＤＳＦサーバに相当する。 (1-5) Network information providing server 350
The network information providing server 350 is a device that provides information on a connection destination wireless network, which is necessary when the connection destination is switched from the wireless network to which the wireless terminal is currently connected to another wireless network. For example, the network information providing server 350 can provide network information for connecting to the WLAN 500 to the WWAN terminal 200. In LTE, the network information providing server 350 corresponds to an ANDSF server.
　（２）ＷＬＡＮ５００
　図３に示すように、ＷＬＡＮ５００は、基地局５１０により運用される公衆ネットワークである。本明細書では、公衆ネットワークの通信方式はＷＬＡＮであるものとして説明するが、Ｂｌｕｅｔｏｏｔｈ等の他の任意の通信方式に従って運用されてもよい。 (2) WLAN500
As shown in FIG. 3, the WLAN 500 is a public network operated by the base station 510. In the present specification, the communication system of the public network is described as being WLAN, but may be operated according to any other communication system such as Bluetooth.
　基地局５１０は、ＷＬＡＮ通信機能を有する無線端末が、ＷＬＡＮ５００に接続する際の接点となる装置である。例えば、基地局５１０は、ＷＬＡＮ端末１００からの接続を受け付ける。公衆ネットワークの通信方式がＷＬＡＮの場合、基地局５１０はアクセスポイントに相当する。 The base station 510 is a device that serves as a contact point when a wireless terminal having a WLAN communication function connects to the WLAN 500. For example, the base station 510 receives a connection from the WLAN terminal 100. When the communication method of the public network is WLAN, the base station 510 corresponds to an access point.
　以上、本実施形態に係る無線通信システム１の構成例について説明した。続いて、図４及び図５を参照して、本実施形態に係るＷＬＡＮ端末１００の構成例を説明する。 The configuration example of the wireless communication system 1 according to the present embodiment has been described above. Subsequently, a configuration example of the WLAN terminal 100 according to the present embodiment will be described with reference to FIGS. 4 and 5.
　［２－２．ＷＬＡＮ端末の構成例］
　図４は、本実施形態に係るＷＬＡＮ端末１００の論理的な構成の一例を示すブロック図である。図４に示すように、ＷＬＡＮ端末１００は、無線通信部１１０、記憶部１２０、及び制御部１３０を有する。 [2-2. Configuration example of WLAN terminal]
FIG. 4 is a block diagram illustrating an example of a logical configuration of the WLAN terminal 100 according to the present embodiment. As illustrated in FIG. 4, the WLAN terminal 100 includes a wireless communication unit 110, a storage unit 120, and a control unit 130.
　（１）無線通信部１１０
　無線通信部１１０は、外部機器との間でのデータの送受信を行う通信モジュールである。無線通信部１１０は、多様な通信方式を用いて無線通信を行うことができる。例えば、無線通信部１１０は、ＷＬＡＮモジュール１１２を有し、Ｗｉ－Ｆｉ（登録商標）、ＷＬＡＮを用いて無線通信可能である。また、無線通信部１１０は、ＢＴ（Ｂｌｕｅｔｏｏｔｈ）モジュール１１４を有し、Ｂｌｕｅｔｏｏｔｈを用いて無線通信可能である。また、無線通信部１１０は、ＮＦＣモジュール１１６を有し、ＮＦＣを用いて無線通信可能である。 (1) Wireless communication unit 110
The wireless communication unit 110 is a communication module that transmits / receives data to / from an external device. The wireless communication unit 110 can perform wireless communication using various communication methods. For example, the wireless communication unit 110 includes a WLAN module 112 and can perform wireless communication using Wi-Fi (registered trademark) or WLAN. The wireless communication unit 110 includes a BT (Bluetooth) module 114 and can perform wireless communication using Bluetooth. The wireless communication unit 110 includes an NFC module 116 and can perform wireless communication using NFC.
　例えば、無線通信部１１０は、ＷＷＡＮ３００に接続して無線通信を行うＷＷＡＮ端末２００との無線通信を行う第１の無線通信部として機能し得る。例えば、無線通信部１１０は、ＮＦＣ、Ｂｌｕｅｔｏｏｔｈ等の近距離無線通信方式又はＷＬＡＮ等を用いて、ＷＷＡＮ端末２００との無線通信を行う。 For example, the wireless communication unit 110 can function as a first wireless communication unit that performs wireless communication with the WWAN terminal 200 that connects to the WWAN 300 and performs wireless communication. For example, the wireless communication unit 110 performs wireless communication with the WWAN terminal 200 using a short-range wireless communication method such as NFC or Bluetooth, or WLAN.
　例えば、無線通信部１１０は、公衆ネットワークに接続して無線通信を行う第２の無線通信部として機能し得る。例えば、無線通信部１１０は、ＷＬＡＮ等の無線通信方式を用いて、ＷＬＡＮ５００に接続する。公衆ネットワークは、ＷＬＡＮ以外の任意の無線通信方式をサポートしていてもよく、その場合、無線通信部１１０は公衆ネットワークに応じた無線通信方式を用いて公衆ネットワークに接続し得る。無線通信部１１０は、各ＷＬＡＮ５００から受信される信号の強度を示す受信電波強度を測定してもよい。 For example, the wireless communication unit 110 can function as a second wireless communication unit that performs wireless communication by connecting to a public network. For example, the wireless communication unit 110 connects to the WLAN 500 using a wireless communication method such as WLAN. The public network may support any wireless communication method other than WLAN, and in that case, the wireless communication unit 110 can connect to the public network using a wireless communication method according to the public network. The wireless communication unit 110 may measure the received radio wave intensity indicating the intensity of the signal received from each WLAN 500.
　無線通信部１１０は、ＷＷＡＮ端末２００との無線通信及び公衆ネットワークとの無線通信について、同一の通信方式を用いて無線通信を行ってもよい。例えば、無線通信部１１０は、ＷＬＡＮを用いてＷＷＡＮ端末２００と通信しつつ、ＷＬＡＮ５００に接続してもよい。この場合、例えば、無線通信部１１０は、ＷＷＡＮ端末２００を介してテザリングを行いサービスネットワーク４００とのデータ送受信を行いながら、後述するポリシーを受信し得る。 The wireless communication unit 110 may perform wireless communication using the same communication method for wireless communication with the WWAN terminal 200 and wireless communication with the public network. For example, the wireless communication unit 110 may connect to the WLAN 500 while communicating with the WWAN terminal 200 using WLAN. In this case, for example, the wireless communication unit 110 can receive a policy (to be described later) while performing tethering via the WWAN terminal 200 and performing data transmission / reception with the service network 400.
　（２）記憶部１２０
　記憶部１２０は、所定の記録媒体に対してデータの記録再生を行う部位である。例えば、記憶部１２０は、無線通信部１１０によりＷＷＡＮ端末２００から受信された情報を記憶する。例えば、記憶部１２０は、後述するアクセスネットワーク情報及びポリシー等を記憶し得る。 (2) Storage unit 120
The storage unit 120 is a part that records and reproduces data on a predetermined recording medium. For example, the storage unit 120 stores information received from the WWAN terminal 200 by the wireless communication unit 110. For example, the storage unit 120 can store access network information and policies described later.
　（３）制御部１３０
　制御部１３０は、演算処理装置および制御装置として機能し、各種プログラムに従って装置ＷＬＡＮ端末１００内の動作全般を制御する。 (3) Control unit 130
The control unit 130 functions as an arithmetic processing device and a control device, and controls the overall operation in the device WLAN terminal 100 according to various programs.
　例えば、制御部１３０は、無線通信部１１０によりＷＷＡＮ端末２００から受信された、ＷＬＡＮ５００のポリシーに基づいて、無線通信部１１０により接続するＷＬＡＮ５００を選択する機能を有する。ポリシーとは、移動体通信網の加入者が利用可能な公衆ＷＬＡＮに関する情報であり、アクセスネットワーク情報の一部である。なお、アクセスネットワーク情報を、ポリシーとして捉えてもよい。ポリシーは、移動体通信網の加入者識別情報を有する加入者が入手可能な情報である。このため、ＷＬＡＮ端末１００は、加入者識別情報を有さない場合、独力でポリシーを入手することが困難である。そこで、制御部１３０は、ポリシーの送信を要求するリクエストを、加入者識別情報を有するＷＷＡＮ端末２００へ送信するよう無線通信部１１０を制御する。これにより、ＷＬＡＮ端末１００は、加入者識別情報を自身で有していなくても、ＷＷＡＮ端末２００からポリシーを取得することが可能になり、接続するＷＬＡＮ５００の選択のために用いることができる。また、後述するように、ＷＬＡＮ端末１００は、ＷＬＡＮ５００への認証処理をＷＷＡＮ端末２００に代理させる。そして、認証処理ではＷＷＡＮ端末２００の加入者識別情報が用いられる。よって、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００から、ＷＷＡＮ端末２００の加入者識別情報に対応するポリシーを取得することで、ＷＷＡＮ端末２００による認証処理が可能な、即ち接続可能なＷＬＡＮ５００のみを選択対象とすることができる。以下、図５を参照して、ポリシーの内容について説明する。 For example, the control unit 130 has a function of selecting the WLAN 500 to be connected by the wireless communication unit 110 based on the WLAN 500 policy received from the WWAN terminal 200 by the wireless communication unit 110. A policy is information about a public WLAN that can be used by a subscriber of a mobile communication network, and is a part of access network information. Note that the access network information may be regarded as a policy. The policy is information that can be obtained by the subscriber having the subscriber identification information of the mobile communication network. For this reason, when the WLAN terminal 100 does not have subscriber identification information, it is difficult to obtain a policy by itself. Therefore, the control unit 130 controls the wireless communication unit 110 to transmit a request for requesting transmission of the policy to the WWAN terminal 200 having the subscriber identification information. Thereby, even if the WLAN terminal 100 does not have the subscriber identification information itself, the WLAN terminal 100 can acquire the policy from the WWAN terminal 200 and can be used for selecting the WLAN 500 to be connected. Further, as will be described later, the WLAN terminal 100 causes the WWAN terminal 200 to perform authentication processing for the WLAN 500 as a proxy. In the authentication process, the subscriber identification information of the WWAN terminal 200 is used. Therefore, the WLAN terminal 100 obtains a policy corresponding to the subscriber identification information of the WWAN terminal 200 from the WWAN terminal 200, so that only the WLAN 500 that can be authenticated by the WWAN terminal 200, that is, can be connected, is selected. can do. Hereinafter, the contents of the policy will be described with reference to FIG.
　図５は、本実施形態に係るポリシーの一例を説明するための説明図である。図５では、ポリシーに含まれるノードの構成を示している。図５に示すように、ポリシーはディレクトリ構造を有している。以下、各ノードについて説明する。 FIG. 5 is an explanatory diagram for explaining an example of a policy according to the present embodiment. FIG. 5 shows a configuration of nodes included in the policy. As shown in FIG. 5, the policy has a directory structure. Hereinafter, each node will be described.
　＜Ｘ＞：
　　特定ノードに対するプレースホルダ <X>:
Placeholder for a specific node
　ＲｕｌｅＰｒｉｏｒｉｔｙ：
　　ルールの優先順位。整数で表され、小さい値ほど優先順位は高い Rule Priority:
Rule priority. Expressed as an integer, the lower the priority, the higher the priority
　ＰｒｉｏｒｉｔｉｚｅｄＡｃｃｅｓｓ：
　　特定ルールに対する優先アクセスを示すノード
　ＡｃｃｅｓｓＴｅｃｈｎｏｌｏｇｙ：
　　優先接続向けの技術を以下のいずれかの整数で記す
　　　０：Ｒｅｓｅｒｖｅｄ
　　　１：３ＧＰＰ
　　　２：Ｒｅｓｅｒｖｅｄ
　　　３：ＷＬＡＮ
　　　４：ＷｉＭＡＸ
　　　５－２５５：Ｒｅｓｅｒｖｅｄ
　ＡｃｃｅｓｓＩｄ：
　　アクセスネットワークＩＤとしてＷＬＡＮの場合はＳＳＩＤ、ＷｉＭＡＸの場合はＮＡＰ－ＩＤを文字列で記す
　ＳｅｃｏｎｄａｒｙＡｃｃｅｓｓＩｄ：
　　ＷＬＡＮアクセスネットワークに対してＨＥＳＳＩＤのみ文字列で記す。ＡｃｃｅｓｓＩｄにＷＬＡＮが選択されている場合にのみ使用される
　ＡｃｃｅｓｓＮｅｔｗｏｒｋＰｒｉｏｒｉｔｙ：
　　アクセス技術の優先順位を１－２５０の整数で記す。小さい値ほど優先度は高い
　　　０：　Ｒｅｓｅｒｖｅｄ
　　　１－２５０：　Ｐｒｉｏｒｉｔｙ　ｖａｌｕｅ
　　　２５１－２５３：　Ｒｅｓｅｒｖｅｄ
　　　２５４：　限定アクセス、現在のルールが有効な場合はアクセスすべきではない
　　　２５５：　禁止、現在のルールが有効な場合、ＵＥはアクセスしてはいけない Prioritized Access:
Node Access Technology indicating priority access to a specific rule:
The technology for priority connection is described with one of the following integers: 0: Reserved
1: 3GPP
2: Reserved
3: WLAN
4: WiMAX
5-255: Reserved
AccessId:
In the case of WLAN, the access network ID is SSID, and in the case of WiMAX, NAP-ID is written as a character string. SecondaryAccessId:
Only the HESSID is written in the character string for the WLAN access network. Used only when WLAN is selected for AccessId. AccessNetworkPriority:
The priority of the access technology is described with an integer of 1-250. The lower the value, the higher the priority. 0: Reserved
1-250: Priority value
251-253: Reserved
254: Limited access, should not be accessed if current rule is valid 255: Prohibited, UE should not access if current rule is valid
　ＶａｌｉｄｉｔｙＡｒｅａ：
　　特定ルールに対するロケーションコンディション
　３ＧＰＰ＿Ｌｏｃａｔｉｏｎ：
　　３ＧＰＰロケーション
　ＰＬＭＮ：
　　特定の３ＧＰＰロケーションコンディションに対するＰＬＭＮ（Public　Land　Mobile　Network）コード
　ＴＡＣ：
　　特定の３ＧＰＰロケーションコンディションに対するトラッキングエリアコード
　ＬＡＣ：
　　特定の３ＧＰＰロケーションコンディションに対するロケーションエリアコード
　ＧＥＲＡＮ＿ＣＩ：
　　特定のＧＥＲＡＮ（GSM　EDGE　Radio　Access　Network）ネットワークに関連する場所のセルＩＤ
　ＵＴＲＡＮ＿ＣＩ：
　　特定のＵＴＲＡＮ（UMTS　Terrestrial　Radio　Access　Network）ネットワークに関連する場所のセルＩＤ
　ＥＵＴＲＡ＿ＣＩ：
　　特定のＥ－ＵＴＲＡ（Evolved　Universal　Terrestrial　Radio　Access）ネットワークに関連する場所のセルＩＤ
　３ＧＰＰ２＿Ｌｏｃａｔｉｏｎ：
　　３ＧＰＰ２ロケーション
　１ｘ：
　　３ＧＰＰ２　１ｘ　ＲＡＴ（Radio　Access　Technology）ロケーション
　ＳＩＤ：
　　３ＧＰＰ２　１ｘ　ＲＡＴロケーションコンディションのためのシステム識別コード
　ＮＩＤ：
　　３ＧＰＰ２　１ｘ　ＲＡＴロケーションコンディションのためのネットワーク識別コード
　Ｂａｓｅ＿ＩＤ：
　　３ＧＰＰ２　１ｘ　ＲＡＴロケーションコンディションのための基地局識別コード
　ＨＲＰＤ：
　　３ＧＰＰ２　ＨＲＰＤ　ＲＡＴロケーション
　Ｓｅｃｔｏｒ＿ＩＤ：
　　３ＧＰＰ２　ＨＲＰＤ　ＲＡＴロケーションコンディションのためのセクタID
　Ｎｅｔｍａｓｋ：
　　３ＧＰＰ２　ＨＲＰＤ　ＲＡＴロケーションコンディションのためのネットマスクコード
　ＷｉＭＡＸ＿Ｌｏｃａｔｉｏｎ：
　　ＷｉＭＡＸロケーション
　ＮＡＰ－ＩＤ：
　　特定のＷｉＭＡＸロケーションコンディションのためのＮｅｔｗｏｒｋ　Ａｃｃｅｓｓ　Ｐｒｏｖｉｄｅｒ　ＩＤ
　ＢＳ－ＩＤ：
　　特定のＷｉＭＡＸロケーションコンディションのための基地局ＩＤ
　ＷＬＡＮ＿Ｌｏｃａｔｉｏｎ：
　　ＷＬＡＮロケーション
　ＨＥＳＳＩＤ：
　　特定のＷＬＡＮロケーションコンディションのためのＨＥＳＳＩＤ
　ＳＳＩＤ：
　　特定のＷＬＡＮロケーションコンディションのためのＳＳＩＤ
　ＢＳＳＩＤ：
　　特定のＷＬＡＮロケーションコンディションのためのＢＳＳＩＤ
　Ｇｅｏ＿Ｌｏｃａｔｉｏｎ：
　　ＧＰＳロケーション
　Ｃｉｒｃｕｌａｒ：
　　サーキュラエリアロケーション
　ＡｎｃｈｏｒＬａｔｉｔｕｄｅ：
　　サーキュラエリア中心の緯度
　ＡｎｃｈｏｒＬｏｎｇｉｔｕｄｅ：
　　サーキュラエリア中心の経度
　Ｒａｄｉｕｓ：
　　サーキュラエリアの有効半径 ValidityArea:
Location condition for a specific rule 3GPP_Location:
3GPP location PLMN:
PLMN (Public Land Mobile Network) code TAC for a specific 3GPP location condition:
Tracking area code LAC for a specific 3GPP location condition:
Location area code GERAN_CI for a specific 3GPP location condition:
Cell ID of the location associated with a specific GERAN (GSM EDGE Radio Access Network) network
UTRAN_CI:
Cell ID of the location associated with a specific UTRAN (UMTS Terrestrial Radio Access Network) network
EUTRA_CI:
Cell ID of the location associated with a specific E-UTRA (Evolved Universal Terrestrial Radio Access) network
3GPP2_Location:
3GPP2 location 1x:
3GPP2 1x RAT (Radio Access Technology) Location SID:
System identification code NID for 3GPP2 1x RAT location condition:
Network identification code for 3GPP2 1x RAT location condition Base_ID:
Base station identification code HRPD for 3GPP2 1x RAT location condition:
3GPP2 HRPD RAT location Sector_ID:
Sector ID for 3GPP2 HRPD RAT location condition
Netmask:
Netmask code for 3GPP2 HRPD RAT location condition WiMAX_Location:
WiMAX location NAP-ID:
Network Access Provider ID for a specific WiMAX location condition
BS-ID:
Base station ID for a specific WiMAX location condition
WLAN_Location:
WLAN location HESSID:
HESSID for specific WLAN location conditions
SSID:
SSID for a specific WLAN location condition
BSSID:
BSSID for specific WLAN location condition
Geo_Location:
GPS Location Circular:
Circular Area Location AnchorLitude:
The latitude in the center of the circular area AnchorLongitude:
Longitude of the center of the circular area Radius:
Effective radius of the circular area
　ＴｉｍｅＯｆＤａｙ：
　　日時の状況を示すノード
　ＴｉｍｅＳｔａｒｔ：
　　開始時刻
　ＴｉｍｅＳｔｏｐ：
　　終了時刻
　ＤａｔｅＳｔａｒｔ：
　　開始日
　ＤａｔｅＳｔｏｐ：
　　終了日
　ＵｐｄａｔｅＰｏｌｉｃｙ：
　　更新ポリシーを０又は１で示す
　　　０：　ＵＥは更新不要
　　　１：　ＵＥは更新必要 TimeOfDay:
Node indicating the status of the date and time TimeStart:
Start time TimeStop:
End time DateStart:
Start Date DateStop:
End Date UpdatePolicy:
The update policy is indicated by 0 or 1. 0: UE does not need to be updated 1: UE needs to be updated
　以上説明したように、ポリシーは、ネットワークの優先順位及びネットワークを識別するためのアクセスＩＤを含む。制御部１３０は、ポリシーに含まれる優先順位に従って接続するＷＬＡＮ５００を選択する。そして、制御部１３０は、ポリシーに含まれるアクセスＩＤを用いて、選択したＷＬＡＮ５００に接続する。制御部１３０は、ＷＬＡＮ５００に接続しないことを選択して、テザリングを用いることを選択してもよい。 As described above, the policy includes the network priority and the access ID for identifying the network. The control unit 130 selects the WLAN 500 to be connected according to the priority order included in the policy. Then, the control unit 130 connects to the selected WLAN 500 using the access ID included in the policy. The control unit 130 may select not to connect to the WLAN 500 and select to use tethering.
　制御部１３０は、優先順位以外の任意の指標をさらに用いてＷＬＡＮ５００を選択してもよい。例えば、制御部１３０は、無線通信部１１０により測定される各ＷＬＡＮ５００の受信電波強度にさらに基づいて、接続するＷＬＡＮ５００を選択してもよい。これにより、ＷＬＡＮ端末１００は、例えば基地局５１０が密集したり電波環境が動的に変わったりする状況下においても、受信電波強度が強いＷＬＡＮ５００を選択することで、十分なデータ通信レートを確保することができる。また、十分なデータ通信レートの確保が困難な場合、制御部１３０は、テザリングを用いることを選択してもよい。 The control unit 130 may further select the WLAN 500 using any index other than the priority order. For example, the control unit 130 may select the WLAN 500 to be connected based on the received radio wave intensity of each WLAN 500 measured by the wireless communication unit 110. Thereby, the WLAN terminal 100 ensures a sufficient data communication rate by selecting the WLAN 500 having a strong received radio wave intensity even in a situation where, for example, the base stations 510 are crowded or the radio wave environment changes dynamically. be able to. Further, when it is difficult to ensure a sufficient data communication rate, the control unit 130 may select to use tethering.
　なお、アクセスネットワーク情報も、移動体通信網の加入者が利用可能な公衆ＷＬＡＮに関する情報を含む。また、アクセスネットワーク情報も、ポリシーと同様に移動体通信網の加入者識別情報を有する加入者が入手可能な情報である。そこで、制御部１３０は、加入者識別情報を有するＷＷＡＮ３００からアクセスネットワーク情報を取得して、接続するＷＬＡＮ５００の選択のために用いてもよい。 The access network information also includes information on public WLAN that can be used by mobile communication network subscribers. The access network information is also information that can be obtained by a subscriber having subscriber identification information of the mobile communication network, as in the policy. Therefore, the control unit 130 may acquire access network information from the WWAN 300 having the subscriber identification information and use it for selecting the WLAN 500 to be connected.
　制御部１３０は、周囲に存在するネットワークを探索して、探索に成功したＷＬＡＮ５００に接続するよう無線通信部１１０を制御する。ここで、周囲のネットワークの探索と接続するネットワークの選択との順序は任意である。例えば、制御部１３０は、無線通信部１１０により探索された周囲のネットワークの中から、接続するＷＬＡＮ５００をポリシーに基づいて選択してもよい。この場合、例えば制御部１３０は、全チャネルで周囲のネットワークを探索するよう無線通信部１１０を制御する。この場合、制御部１３０は、ポリシーに加えて電波強度等の指標を、周囲に存在する複数のネットワーク間で比較しながら、接続するＷＬＡＮ５００を選択することが可能である。他にも、制御部１３０は、ポリシーに基づいて選択したＷＬＡＮ５００を対象として、周囲のネットワークを探索するよう無線通信部１１０を制御してもよい。例えば、制御部１３０は、選択したＷＬＡＮ５００が動作するチャネルのみについて、周囲のネットワークを探索するよう無線通信部１１０を制御する。この場合、制御部１３０は、探索をより高速に行うことが可能である。いずれにしろ、ＷＬＡＮ端末１００自身が、周囲のネットワークを探索する。これにより、ＷＬＡＮ５００が密集したり電波環境が動的に変わったりする状況下においても、周囲のネットワークを比較しながら自身にとって適切なＷＬＡＮ５００を選択することが可能になる。 The control unit 130 searches the network existing in the vicinity, and controls the wireless communication unit 110 to connect to the WLAN 500 that has been successfully searched. Here, the order of searching for surrounding networks and selecting a network to be connected is arbitrary. For example, the control unit 130 may select the WLAN 500 to be connected from the surrounding networks searched by the wireless communication unit 110 based on the policy. In this case, for example, the control unit 130 controls the wireless communication unit 110 so as to search surrounding networks on all channels. In this case, the control unit 130 can select the WLAN 500 to be connected while comparing an index such as radio wave intensity in addition to the policy among a plurality of networks existing in the vicinity. In addition, the control unit 130 may control the wireless communication unit 110 to search for a surrounding network for the WLAN 500 selected based on the policy. For example, the control unit 130 controls the wireless communication unit 110 so as to search the surrounding network only for the channel on which the selected WLAN 500 operates. In this case, the control unit 130 can perform the search at a higher speed. In any case, the WLAN terminal 100 itself searches for surrounding networks. As a result, even in a situation where the WLANs 500 are crowded or the radio wave environment changes dynamically, it becomes possible to select the WLAN 500 appropriate for itself while comparing surrounding networks.
　制御部１３０は、選択したＷＬＡＮ５００に接続後に、他のＷＬＡＮ５００の探索を継続して行い、探索結果に応じて接続するＷＬＡＮ５００を切り替えてもよい。例えば、制御部１３０は、接続中のＷＬＡＮ５００よりも優先順位が高い他のＷＬＡＮ５００の探索を行って、探索に成功した場合に切り替え得る。他にも、制御部１３０は、接続中のＷＬＡＮ５００よりも受信電波強度が強い他のＷＬＡＮ５００に切り替えてもよい。これにより、ＷＬＡＮ端末１００は、ＷＬＡＮ５００に接続後も、より良い接続先へ自動的に切り替えることができる。 The control unit 130 may continue to search for another WLAN 500 after connecting to the selected WLAN 500 and switch the connected WLAN 500 according to the search result. For example, the control unit 130 can perform a search for another WLAN 500 having a higher priority than the currently connected WLAN 500 and switch the search when the search is successful. In addition, the control unit 130 may switch to another WLAN 500 whose received radio wave intensity is stronger than the connected WLAN 500. As a result, the WLAN terminal 100 can automatically switch to a better connection destination after connection to the WLAN 500.
　制御部１３０は、テザリング利用中にも、探索を継続して行い得る。例えば、制御部１３０は、アクセスポイントとして動作するＷＷＡＮ端末２００に接続後にＷＬＡＮ５００の探索を継続して行い、探索結果に応じて接続先をＷＬＡＮ５００に切り替えてもよい。ＷＷＡＮ端末２００は、アクセスポイントとして動作する間、周囲のＷＬＡＮ５００を探索することが困難である。一方で、ＷＬＡＮ端末１００は、テザリング中であっても周囲のＷＬＡＮ５００を継続して探索することが可能である。よって、ＷＬＡＮ端末１００は、テザリング利用中も探索を継続して行うことにより、公衆ＷＬＡＮが利用可能なエリアに入った場合にテザリングを自動的に終了して、接続先を公衆ＷＬＡＮへ自動的に切り替えることができる。これにより、ＷＷＡＮ端末２００の消費電力が削減され、ＷＷＡＮ通信のトラフィックも軽減される。 The control unit 130 can continue the search even while using tethering. For example, the control unit 130 may continue searching for the WLAN 500 after connecting to the WWAN terminal 200 operating as an access point, and switch the connection destination to the WLAN 500 according to the search result. While the WWAN terminal 200 operates as an access point, it is difficult to search the surrounding WLAN 500. On the other hand, the WLAN terminal 100 can continuously search the surrounding WLAN 500 even during tethering. Therefore, the WLAN terminal 100 continuously searches even while tethering is used, so that tethering is automatically terminated when the public WLAN enters an available area, and the connection destination is automatically transferred to the public WLAN. Can be switched. Thereby, the power consumption of the WWAN terminal 200 is reduced, and the traffic of the WWAN communication is also reduced.
　制御部１３０は、探索したＷＬＡＮ５００に接続する際に、加入者識別情報を用いた認証処理を行ってもよい。例えば、制御部１３０は、ＷＷＡＮ端末２００が有する加入者識別情報を用いたＥＡＰ（Extensible　Authentication　Protocol）認証により、ＷＬＡＮ５００への認証を行う。具体的には、例えば、制御部１３０は、無線通信部１１０によりＷＷＡＮ端末２００から加入者識別情報に基づく認証情報を受信して、無線通信部１１０により認証情報を用いたＷＬＡＮ５００への認証を行う。詳しくは、制御部１３０は、ＷＷＡＮ端末２００により行われる認証処理のために、ＷＷＡＮ端末２００とＷＬＡＮ５００との間で送受信されるメッセージを中継する中継処理を制御する。例えば、制御部１３０は、無線通信部１１０により受信された、ＷＬＡＮ５００への認証のためのメッセージ（第１のメッセージ）を、無線通信部１１０によりＷＷＡＮ端末２００へ送信する。このメッセージは、例えば認証情報の生成を要求するメッセージである。また、制御部１３０は、無線通信部１１０によりＷＷＡＮ端末２００から受信された、ＷＷＡＮ端末２００により生成された認証情報を含むメッセージ（第２のメッセージ）を、無線通信部１１０によりＷＬＡＮ５００を運用する基地局５１０へ送信する。 The control unit 130 may perform an authentication process using the subscriber identification information when connecting to the searched WLAN 500. For example, the control unit 130 performs authentication to the WLAN 500 by EAP (Extensible Authentication Protocol) authentication using subscriber identification information included in the WWAN terminal 200. Specifically, for example, the control unit 130 receives authentication information based on the subscriber identification information from the WWAN terminal 200 by the wireless communication unit 110, and performs authentication to the WLAN 500 using the authentication information by the wireless communication unit 110. . Specifically, the control unit 130 controls a relay process for relaying a message transmitted / received between the WWAN terminal 200 and the WLAN 500 for the authentication process performed by the WWAN terminal 200. For example, the control unit 130 transmits a message (first message) for authentication to the WLAN 500 received by the wireless communication unit 110 to the WWAN terminal 200 by the wireless communication unit 110. This message is, for example, a message that requests generation of authentication information. In addition, the control unit 130 receives a message (second message) received by the wireless communication unit 110 from the WWAN terminal 200 and containing the authentication information generated by the WWAN terminal 200, as a base for operating the WLAN 500 using the wireless communication unit 110. Transmit to station 510.
　ＷＬＡＮ端末１００により中継されるメッセージは、ＥＡＰを用いた認証処理のためのメッセージであってもよい。例えば、第１のメッセージはＥＡＰ－Ｒｅｑｕｅｓｔ／Ｉｄｅｎｔｉｔｙであり、第２のメッセージはＥＡＰ－Ｒｅｓｐｏｎｓｅ／Ｉｄｅｎｔｉｔｙであってもよい。また、第１のメッセージはＥＡＰ－Ｒｅｑｕｅｓｔ／ＡＫＡ－Ｃｈａｌｌｅｎｇｅであり、第２のメッセージはＥＡＰ－Ｒｅｓｐｏｎｓｅ／ＡＫＡ－Ｃｈａｌｌｅｎｇｅであってもよい。なお、本明細書では、認証プロトコルの一例として、ＥＡＰ－ＡＫＡが採用される例を説明するが、ＥＡＰ－ＳＩＭ、又はＥＡＰ－ＡＫＡ’等の、加入者情報を認証処理に用いる他の認証プロトコルが採用されてもよい。 The message relayed by the WLAN terminal 100 may be a message for authentication processing using EAP. For example, the first message may be EAP-Request / Identity, and the second message may be EAP-Response / Identity. Further, the first message may be EAP-Request / AKA-Challenge and the second message may be EAP-Response / AKA-Challenge. In this specification, an example in which EAP-AKA is adopted as an example of an authentication protocol will be described. However, other authentication protocols such as EAP-SIM or EAP-AKA ', which use subscriber information for authentication processing. May be adopted.
　ＥＡＰ認証により、接続先のネットワークの切り替えがユーザ操作を要することなく行われる。上述したように、ＷＬＡＮ端末１００は、ＷＬＡＮ５００に接続後にも探索を継続して接続先のネットワークを切り替えるので、ユーザ操作を要さないＥＡＰ認証によりユーザの利便性は向上する。 EAP switching enables connection destination network switching without requiring user operation. As described above, the WLAN terminal 100 continues the search even after connecting to the WLAN 500 and switches the connection destination network. Therefore, the user convenience is improved by the EAP authentication that does not require the user operation.
　また、制御部１３０は、上述したメッセージの中継処理によって、ＥＡＰを用いたＷＬＡＮ５００への認証処理をＷＷＡＮ端末２００に代理で行わせることができる。このため、ＷＬＡＮ端末１００は、加入者識別情報を有さない場合であっても、容易にＷＬＡＮ５００に接続することができる。 Further, the control unit 130 can cause the WWAN terminal 200 to perform authentication processing for the WLAN 500 using EAP by proxy by the above-described message relay processing. For this reason, the WLAN terminal 100 can be easily connected to the WLAN 500 even when it does not have subscriber identification information.
　制御部１３０は、選択したＷＬＡＮ５００への接続結果を示す情報を、ＷＷＡＮ端末２００へ送信するよう無線通信部１１０を制御してもよい。接続結果を示す情報としては、例えば、ＷＬＡＮ５００への接続に成功したか否か、成功した場合のデータ通信レート等が考えらえる。 The control unit 130 may control the wireless communication unit 110 to transmit information indicating a connection result to the selected WLAN 500 to the WWAN terminal 200. As information indicating the connection result, for example, whether or not the connection to the WLAN 500 is successful, the data communication rate when the connection is successful, and the like can be considered.
　以上、本実施形態に係るＷＬＡＮ端末１００の構成例を説明した。続いて、図６を参照して、本実施形態に係るＷＷＡＮ端末２００の構成例を説明する。 The configuration example of the WLAN terminal 100 according to the present embodiment has been described above. Next, a configuration example of the WWAN terminal 200 according to the present embodiment will be described with reference to FIG.
　［２－３．ＷＷＡＮ端末の構成例］
　図６は、本実施形態に係るＷＷＡＮ端末２００の論理的な構成の一例を示すブロック図である。図６に示すように、ＷＷＡＮ端末２００は、無線通信部２１０、記憶部２２０、加入者識別モジュール２３０、及び制御部２４０を有する。 [2-3. Example of WWAN terminal configuration]
FIG. 6 is a block diagram illustrating an example of a logical configuration of the WWAN terminal 200 according to the present embodiment. As illustrated in FIG. 6, the WWAN terminal 200 includes a wireless communication unit 210, a storage unit 220, a subscriber identification module 230, and a control unit 240.
　（１）無線通信部２１０
　無線通信部２１０は、外部機器との間でのデータの送受信を行う通信モジュールである。無線通信部２１０は、多様な通信方式を用いて無線通信を行うことができる。例えば、無線通信部２１０は、ＷＷＡＮモジュール２１２を有し、ＷＷＡＮ３００を用いて無線通信可能である。また、無線通信部２１０は、ＷＬＡＮモジュール２１４を有し、Ｗｉ－Ｆｉ、ＷＬＡＮを用いて無線通信可能である。また、無線通信部２１０は、ＢＴモジュール２１６を有し、Ｂｌｕｅｔｏｏｔｈを用いて無線通信可能である。また、無線通信部２１０は、ＮＦＣモジュール２１８を有し、ＮＦＣを用いて無線通信可能である。 (1) Wireless communication unit 210
The wireless communication unit 210 is a communication module that transmits / receives data to / from an external device. The wireless communication unit 210 can perform wireless communication using various communication methods. For example, the wireless communication unit 210 includes a WWAN module 212 and can perform wireless communication using the WWAN 300. The wireless communication unit 210 includes a WLAN module 214 and can perform wireless communication using Wi-Fi or WLAN. The wireless communication unit 210 includes a BT module 216 and can perform wireless communication using Bluetooth. The wireless communication unit 210 includes an NFC module 218 and can perform wireless communication using NFC.
　例えば、無線通信部２１０は、ＷＬＡＮ端末１００との無線通信を行う第２の無線通信部として機能し得る。例えば、無線通信部２１０は、ＮＦＣ、Ｂｌｕｅｔｏｏｔｈ、若しくはＺｉｇｂｅｅ（登録商標）等の近距離無線通信方式、又はＷＬＡＮ等を用いて、ＷＬＡＮ端末１００との無線通信を行う。また、無線通信部２１０は、ＷＷＡＮモジュール２１２により、ＷＷＡＮ３００に接続して無線通信を行う第１の無線通信部として機能し得る。 For example, the wireless communication unit 210 can function as a second wireless communication unit that performs wireless communication with the WLAN terminal 100. For example, the wireless communication unit 210 performs wireless communication with the WLAN terminal 100 using a short-range wireless communication method such as NFC, Bluetooth, or Zigbee (registered trademark), or WLAN. Further, the wireless communication unit 210 can function as a first wireless communication unit that performs wireless communication by connecting to the WWAN 300 using the WWAN module 212.
　（２）記憶部２２０
　記憶部２２０は、所定の記録媒体に対してデータの記録再生を行う部位である。例えば、記憶部２２０は、無線通信部２１０によりＷＷＡＮ３００から受信された情報を記憶する。例えば、記憶部２２０は、例えば、記憶部１２０は、アクセスネットワーク情報及びポリシー等を記憶し得る。 (2) Storage unit 220
The storage unit 220 is a part that records and reproduces data on a predetermined recording medium. For example, the storage unit 220 stores information received from the WWAN 300 by the wireless communication unit 210. For example, the storage unit 220 can store access network information, policies, and the like, for example.
　（３）加入者識別モジュール２３０
　加入者識別モジュール２３０は、ＷＷＡＮ３００への加入者識別情報を格納する格納部としての機能を有する。例えば、加入者識別モジュール２３０は、ＳＩＭカードにより実現される。 (3) Subscriber identification module 230
The subscriber identification module 230 has a function as a storage unit that stores subscriber identification information for the WWAN 300. For example, the subscriber identification module 230 is realized by a SIM card.
　（４）制御部２４０
　制御部２４０は、演算処理装置および制御装置として機能し、各種プログラムに従って装置ＷＷＡＮ端末２００内の動作全般を制御する。 (4) Control unit 240
The control unit 240 functions as an arithmetic processing device and a control device, and controls the overall operation in the device WWAN terminal 200 according to various programs.
　例えば、制御部２４０は、ＷＬＡＮ端末１００が接続するＷＬＡＮ５００を選択するために必要な情報を、ＷＬＡＮ端末１００へ提供する機能を有する。例えば、制御部２４０は、無線通信部２１０によりＷＷＡＮ３００を介して受信されたＷＬＡＮ５００のポリシーを、ＷＬＡＮ端末１００へ送信するよう無線通信部２１０を制御する。詳しくは、制御部２４０は、無線通信部２１０によりＷＬＡＮ端末１００から受信されたリクエストに応じて、ＷＬＡＮ５００のポリシーを取得するよう無線通信部２１０を制御する。例えば、制御部２４０は、ネットワーク情報提供サーバ３５０からポリシーを取得する。そして、制御部２４０は、取得したポリシーを、ＷＬＡＮ端末１００へ送信する。これにより、ＷＷＡＮ端末２００は、ＷＬＡＮ端末１００が独力では取得困難なポリシーを代理で取得して、ＷＬＡＮ端末１００へ提供することが可能となる。 For example, the control unit 240 has a function of providing the WLAN terminal 100 with information necessary for selecting the WLAN 500 to which the WLAN terminal 100 is connected. For example, the control unit 240 controls the wireless communication unit 210 to transmit the WLAN 500 policy received by the wireless communication unit 210 via the WWAN 300 to the WLAN terminal 100. Specifically, the control unit 240 controls the wireless communication unit 210 to acquire the WLAN 500 policy in response to the request received from the WLAN terminal 100 by the wireless communication unit 210. For example, the control unit 240 acquires a policy from the network information providing server 350. Then, the control unit 240 transmits the acquired policy to the WLAN terminal 100. As a result, the WWAN terminal 200 can acquire a policy that is difficult for the WLAN terminal 100 to acquire on its own, and provide it to the WLAN terminal 100.
　制御部２４０は、ＷＬＡＮ端末１００のＷＬＡＮ５００への接続結果に基づいて、ポリシーを修正してもよい。例えば、制御部２４０は、ＷＬＡＮ端末１００が接続に成功したか否か、成功した場合のデータ通信レート等に基づいて、より接続に成功しやすく、データ通信レートがよいＷＬＡＮ５００を選定したり、順位付けしたりしておく。そして、制御部２４０は、ＷＬＡＮ端末１００へ送信するポリシーを、選定したＷＬＡＮ５００に関するもののみにして他を削除したり、ポリシーに含まれる優先順位を順位付けに応じて変更したりする。これにより、ＷＬＡＮ端末１００は、より適切なＷＬＡＮ５００に容易に接続することが可能になる。また、この修正は、接続結果を送信したＷＬＡＮ端末１００だけでなく、他のＷＬＡＮ端末１００に送信するポリシーに関しても適用されてもよい。また、ＷＷＡＮ端末２００自身がＷＬＡＮ５００へ接続する際にも、この修正が同様に適用されてもよい。 The control unit 240 may modify the policy based on the connection result of the WLAN terminal 100 to the WLAN 500. For example, the control unit 240 selects a WLAN 500 that is more likely to be successfully connected and has a higher data communication rate based on whether or not the WLAN terminal 100 has succeeded in connection, a data communication rate in the case of success, Or attach it. Then, the control unit 240 deletes the policy transmitted to the WLAN terminal 100 only with respect to the selected WLAN 500, or changes the priority order included in the policy according to the ranking. Thereby, the WLAN terminal 100 can be easily connected to a more appropriate WLAN 500. This modification may be applied not only to the WLAN terminal 100 that transmitted the connection result, but also to a policy that is transmitted to another WLAN terminal 100. Further, this modification may be similarly applied when the WWAN terminal 200 itself connects to the WLAN 500.
　また、制御部２４０は、ＷＬＡＮ端末１００がＷＬＡＮ５００へ認証するための認証処理を行ってもよい。具体的には、制御部２４０は、加入者識別モジュール２３０に格納された加入者識別情報に基づく認証情報を生成して、無線通信部２１０により認証情報をＷＬＡＮ端末１００へ送信する。詳しくは、制御部２４０は、ＷＬＡＮ端末１００により中継されるメッセージに基づいて、認証処理を行う。例えば、制御部２４０は、無線通信部２１０によりＷＬＡＮ端末１００から受信された、ＷＬＡＮ端末１００がＷＬＡＮ５００へ認証するためのメッセージ（第１のメッセージ）に基づいて認証処理を行って認証情報を生成する。このメッセージは、例えば認証情報の生成を要求するメッセージである。また、制御部２４０は、生成した認証情報を含むメッセージ（第２のメッセージ）を、無線通信部２１０によりＷＬＡＮ端末１００へ送信する。 Further, the control unit 240 may perform an authentication process for the WLAN terminal 100 to authenticate to the WLAN 500. Specifically, the control unit 240 generates authentication information based on the subscriber identification information stored in the subscriber identification module 230, and transmits the authentication information to the WLAN terminal 100 by the wireless communication unit 210. Specifically, the control unit 240 performs an authentication process based on a message relayed by the WLAN terminal 100. For example, the control unit 240 performs authentication processing based on a message (first message) for the WLAN terminal 100 to authenticate to the WLAN 500 received from the WLAN terminal 100 by the wireless communication unit 210 and generates authentication information. . This message is, for example, a message that requests generation of authentication information. In addition, the control unit 240 transmits a message (second message) including the generated authentication information to the WLAN terminal 100 by the wireless communication unit 210.
　制御部２４０は、ＷＬＡＮ端末１００により中継されるメッセージに基づいて、ＥＡＰを用いた認証処理を行って認証情報を生成してもよい。上述したように、制御部２４０は、ＥＡＰ－ＡＫＡ、ＥＡＰ－ＳＩＭ、又はＥＡＰ－ＡＫＡ’等の、加入者情報を認証処理に用いる任意の認証プロトコルを用いて認証処理を行ってもよい。制御部２４０は、ＷＬＡＮ端末１００によるメッセージの中継を受けることで、ＥＡＰを用いたＷＬＡＮ５００への認証処理を、ＷＬＡＮ端末１００に代理して行うことができる。このため、ＷＷＡＮ端末２００は、ＷＬＡＮ端末１００が加入者識別情報を有さない場合であっても、ＷＬＡＮ端末１００によるＷＬＡＮ５００への容易な接続を実現することができる。また、ＷＷＡＮ端末２００は、加入者識別情報等を直接ＷＬＡＮ端末１００へ送信しないので、セキュリティを担保することが可能である。 The control unit 240 may perform authentication processing using EAP based on a message relayed by the WLAN terminal 100 to generate authentication information. As described above, the control unit 240 may perform authentication processing using any authentication protocol that uses subscriber information for authentication processing, such as EAP-AKA, EAP-SIM, or EAP-AKA '. The control unit 240 can perform the authentication process for the WLAN 500 using EAP on behalf of the WLAN terminal 100 by receiving the relay of the message by the WLAN terminal 100. For this reason, the WWAN terminal 200 can realize easy connection to the WLAN 500 by the WLAN terminal 100 even when the WLAN terminal 100 does not have subscriber identification information. In addition, since the WWAN terminal 200 does not directly transmit subscriber identification information or the like to the WLAN terminal 100, security can be ensured.
　以上、本実施形態に係るＷＷＡＮ端末２００の構成例を説明した。続いて、図７～図１０を参照して、本実施形態に係る無線通信システム１による動作処理を説明する。 The configuration example of the WWAN terminal 200 according to the present embodiment has been described above. Subsequently, an operation process performed by the wireless communication system 1 according to the present embodiment will be described with reference to FIGS.
　＜３．動作処理＞
　［３－１．接続処理］
　図７は、本実施形態に係る無線通信システム１において実行される接続処理の流れの一例を示すシーケンス図である。図７に示すように、本シーケンスには、基地局３１０、ＷＷＡＮ端末２００、ＷＬＡＮ端末１００、及び基地局５１０が関与する。 <3. Operation processing>
[3-1. Connection process]
FIG. 7 is a sequence diagram showing an example of the flow of connection processing executed in the wireless communication system 1 according to the present embodiment. As shown in FIG. 7, the base station 310, the WWAN terminal 200, the WLAN terminal 100, and the base station 510 are involved in this sequence.
　図７に示すように、まず、ステップＳ１０２で、ＷＷＡＮ端末２００は、基地局３１０との間でポリシー取得処理を行う。例えば、ＷＷＡＮ３００は、ＤＨＣＰ（Dynamic　Host　Configuration　Protocol）問い合わせによってネットワーク情報提供サーバ３５０を発見する。そして、ＷＷＡＮ端末２００は、ネットワーク情報提供サーバ３５０にポリシーの送信を要求してポリシーを取得し、記憶部２２０に記憶しているポリシーを更新する。ポリシー取得処理のトリガは多様に考えられる。以下にその一例を示す。 As shown in FIG. 7, first, in step S102, the WWAN terminal 200 performs policy acquisition processing with the base station 310. For example, the WWAN 300 discovers the network information providing server 350 through a DHCP (Dynamic Host Configuration Protocol) inquiry. Then, the WWAN terminal 200 requests the network information providing server 350 to transmit the policy, acquires the policy, and updates the policy stored in the storage unit 220. There are various triggers for policy acquisition processing. An example is shown below.
　　・受動的なポリシー取得処理
　　　－ＡＮＤＳＦサーバが定期的（１時間、１日、１週間毎など）に送信
　　・能動的なポリシー取得処理
　　　－ＷＷＡＮ端末２００が電源ＯＮ／ＯＦＦのタイミングで要求
　　　－ＷＷＡＮ端末２００が特定エリアへの移動したタイミングで要求 ・ Passive policy acquisition processing -Sent periodically by ANDSF server (1 hour, 1 day, 1 week, etc.) -Active policy acquisition processing -Requested when WWAN terminal 200 is powered on / off -WWAN terminal Requested when 200 moves to a specific area
　能動的なポリシー取得処理においては、ＷＬＡＮ端末１００は、ポリシーの送信を要求するリクエストを送信して、ＷＷＡＮ端末２００からポリシーを受信する。ＷＷＡＮ端末２００は、ＷＬＡＮ端末１００からのリクエストをトリガとして、ネットワーク情報提供サーバ３５０からポリシーを取得してもよい。 In the active policy acquisition process, the WLAN terminal 100 transmits a request for requesting transmission of a policy and receives a policy from the WWAN terminal 200. The WWAN terminal 200 may acquire a policy from the network information providing server 350 using a request from the WLAN terminal 100 as a trigger.
　ポリシーの構造は、図５を参照して上記説明した通りである。ここでは、ポリシーの一例として、下記のネットワーク選択ポリシーが取得されたものとする。 The policy structure is as described above with reference to FIG. Here, it is assumed that the following network selection policy is acquired as an example of the policy.
　　./ANDSF/Name　=　NetworkSelectionPolicy
　　./ANDSF/Policy/Set_1/RulePriority　=　1
　　./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessTechnology　=　WLAN
　　./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessID　=　HotSpotSSID1
　　./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessNetworkPriority=10
　　./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessTechnology　=　WLAN
　　./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessID　=　HotSpotSSID2
　　./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessNetworkPriority=20
　　./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessTechnology　=　WLAN
　　./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessID　=　HotSpotSSID3
　　./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessNetworkPriority=30
　　./ANDSF/Policy/Set_2/RulePriority　=　2
　　./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessTechnology　=　WLAN
　　./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessID　=　HomeSSID
　　./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessNetworkPriority　=　10 ./ANDSF/Name = NetworkSelectionPolicy
./ANDSF/Policy/Set_1/RulePriority = 1
./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessTechnology = WLAN
./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessID = HotSpotSSID1
./ANDSF/Policy/Set_1/PrioritizedAccess/1/AccessNetworkPriority=10
./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessTechnology = WLAN
./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessID = HotSpotSSID2
./ANDSF/Policy/Set_1/PrioritizedAccess/2/AccessNetworkPriority=20
./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessTechnology = WLAN
./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessID = HotSpotSSID3
./ANDSF/Policy/Set_1/PrioritizedAccess/3/AccessNetworkPriority=30
./ANDSF/Policy/Set_2/RulePriority = 2
./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessTechnology = WLAN
./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessID = HomeSSID
./ANDSF/Policy/Set_2/PrioritizedAccess/1/AccessNetworkPriority = 10
　なお、上記ポリシーの例では、NetworkSelectionPolicyという名前を持ったANDSF　Management　Objectについて、PolicyがSet_1とSet_2の2種類あり、優先度がRulePriorityで定められた例を示している。また、Set_1には３つのＷＬＡＮ５００に関する情報が含まれており、それぞれの接続優先順位がAccessNetworkPriorityで定められている。 In the example of the above policy, there are two types of policies, Set_1 and Set_2, for the ANDSF Management Object with the name NetworkSelectionPolicy, and the priority is defined by RulePriority. In addition, Set_1 includes information related to the three WLANs 500, and each connection priority is determined by AccessNetworkPriority.
　次いで、ステップＳ１０４で、ＷＷＡＮ端末２００は、ＷＬＡＮ端末１００へポリシーを送信する。ポリシーの送信には、ＮＦＣ、Ｂｌｕｅｔｏｏｔｈ、若しくはＺｉｇｂｅｅ等の近距離無線通信方式が用いられ得る。また、ＷＷＡＮ端末２００とＷＬＡＮ端末１００との間で既にテザリングが行われている場合、ポリシーの送信にＷＬＡＮが用いられてもよい。ＷＷＡＮ端末２００がポリシーを送信するタイミングは任意である。例えば、ＷＷＡＮ端末２００は、外出前に送信してもよいし、外出中に送信してもよいし、又は外出先でＷＬＡＮ５００内に入ったタイミングで送信してもよい。 Next, in step S104, the WWAN terminal 200 transmits a policy to the WLAN terminal 100. For the transmission of the policy, a short-range wireless communication system such as NFC, Bluetooth, or Zigbee can be used. When tethering has already been performed between the WWAN terminal 200 and the WLAN terminal 100, the WLAN may be used for policy transmission. The timing at which the WWAN terminal 200 transmits the policy is arbitrary. For example, the WWAN terminal 200 may transmit before going out, may transmit during going out, or may transmit at the timing when entering the WLAN 500 while going out.
　次に、ステップＳ１０６で、ＷＬＡＮ端末１００は、受信したポリシーの評価を行う。例えば、制御部１３０は、受信したポリシーを評価して、新たにアクセスネットワーク情報の取得が必要であるか否かを判定する。具体例としては、例えば、制御部１３０は、受信したポリシーに、記憶部１２０に記憶されていないＷＬＡＮ５００に関する情報が含まれる場合に、アクセスネットワーク情報の取得が必要であると判定してもよい。他の具体例としては、例えば、制御部１３０は、受信したポリシーに、記憶部１２０に記憶された情報とは異なる、例えば優先順位の変更等の更新された情報が含まれる場合に、アクセスネットワーク情報の取得が必要であると判定してもよい。 Next, in step S106, the WLAN terminal 100 evaluates the received policy. For example, the control unit 130 evaluates the received policy and determines whether it is necessary to newly acquire access network information. As a specific example, for example, the control unit 130 may determine that access network information needs to be acquired when the received policy includes information regarding the WLAN 500 that is not stored in the storage unit 120. As another specific example, for example, when the received policy includes updated information such as a change in priority, which is different from the information stored in the storage unit 120, the control unit 130 may access network. It may be determined that acquisition of information is necessary.
　以下では、アクセスネットワーク情報の取得が必要であると判定された場合の動作処理を説明する。なお、必要でないと判定された場合、ＷＬＡＮ端末１００は、記憶部１２０に記憶された情報を用いて、接続先のＷＬＡＮ５００を選択してもよい。 Below, the operation process when it is determined that access network information needs to be acquired will be described. If it is determined that it is not necessary, the WLAN terminal 100 may select the connection destination WLAN 500 using information stored in the storage unit 120.
　次いで、ステップＳ１０８で、ＷＬＡＮ端末１００は、アクセスネットワーク情報を送信するよう要求する、アクセスネットワーク情報リクエストを送信する。アクセスネットワーク情報リクエストは、ＷＷＡＮ端末２００及び基地局３１０を経由してネットワーク情報提供サーバ３５０へ中継される。アクセスネットワーク情報リクエストには、例えば下記の情報が含まれ得る。 Next, in step S108, the WLAN terminal 100 transmits an access network information request for requesting transmission of access network information. The access network information request is relayed to the network information providing server 350 via the WWAN terminal 200 and the base station 310. The access network information request may include the following information, for example.
　　・接続先のＷＬＡＮ５００のネットワークタイプ
　　・ＷＷＡＮ端末２００の位置情報　（ＧＰＳ情報）
　　・ＷＷＡＮ端末２００が接続している移動体通信網のセルＩＤ
　　・現在日時 -Network type of the destination WLAN 500-Location information of the WWAN terminal 200 (GPS information)
-Cell ID of the mobile communication network to which the WWAN terminal 200 is connected
·Current date and time
　ここでは、ＷＬＡＮ端末１００は、一例として下記の表に示すアクセスネットワーク情報リクエストを送信するものとする。 Here, as an example, it is assumed that the WLAN terminal 100 transmits an access network information request shown in the following table.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　次に、ステップＳ１１０で、ＷＷＡＮ端末２００は、アクセスネットワーク情報が格納されたアクセスネットワーク情報応答を、ＷＬＡＮ端末１００へ送信する。アクセスネットワーク情報応答は、ネットワーク情報提供サーバ３５０から基地局３１０及びＷＷＡＮ端末２００を経由してＷＬＡＮ端末１００へ中継される。ネットワーク情報提供サーバ３５０が保持するアクセスネットワーク情報の一例を、以下に示す。 Next, in step S110, the WWAN terminal 200 transmits an access network information response storing the access network information to the WLAN terminal 100. The access network information response is relayed from the network information providing server 350 to the WLAN terminal 100 via the base station 310 and the WWAN terminal 200. An example of access network information held by the network information providing server 350 is shown below.
　ＩＤ：
　　ネットワーク情報識別子（ネットワーク情報を一意に特定するための識別子）
　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ　Ｔｙｐｅ：
　　ネットワークタイプ（ＷＬＡＮ、ＷｉＭＡＸなど）
　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ　Ｐｒｏｐｅｒｔｙ：
　　ネットワークの詳細情報
　　ＷＬＡＮの場合は例えば以下のような情報
　　－　ＨＥＳＳＩＤ（Homogeneous　Extended　Service　Set　Identifier）
　　－　ＥＳＳＩＤ（Extended　Service　Set　Identifier）
　　－　ＢＳＳＩＤ（Basic　Service　Set　Identifier）
　　－　動作チャネルなど
　Ｇｅｏ　Ｌｏｃａｔｉｏｎ：
　　本ネットワークが利用可能なエリア情報
　Ａｖａｉｌａｂｌｅ　Ｄａｔｅ　＆　Ｔｉｍｅ：
　　本ネットワークが利用可能な時刻情報
　Ｐｒｉｏｒｉｔｙ：
　　本ネットワークを接続先として選択する際の優先順位 ID:
Network information identifier (identifier for uniquely identifying network information)
Access Network Type:
Network type (WLAN, WiMAX, etc.)
Access Network Property:
Detailed network information For WLAN, for example:-HESSID (Homogeneous Extended Service Set Identifier)
-ESSID (Extended Service Set Identifier)
– BSSID (Basic Service Set Identifier)
-Operating channel, etc. Geo Location:
Area information available for this network Available Date & Time:
Time information that this network can use Priority:
Priority when selecting this network as the connection destination
　ここでは、ＷＬＡＮ端末１００は、一例として下記の表に示すアクセスネットワーク情報を受信したものとする。 Here, it is assumed that the WLAN terminal 100 has received the access network information shown in the following table as an example.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　次いで、ステップＳ１１２で、ＷＬＡＮ端末１００は、受信したポリシー及びアクセスネットワーク情報に基づいて周囲のネットワークを探索する（Ｓｃａｎ１）。例えば、ＷＬＡＮ端末１００は、探索された周囲のネットワークの中から接続するＷＬＡＮ５００をポリシーに基づいて選択したり、ポリシーに基づいて選択したＷＬＡＮ５００を対象として周囲のネットワークを探索したりする。ＷＬＡＮ端末１００は、ポリシーに記載された優先順位に従って接続するＷＬＡＮ５００を選択する。ＷＬＡＮ端末１００は、優先順位に加えて、受信電波強度に基づいて接続するＷＬＡＮ５００を選択してもよい。 Next, in step S112, the WLAN terminal 100 searches for a surrounding network based on the received policy and access network information (Scan1). For example, the WLAN terminal 100 selects the WLAN 500 to be connected from the searched surrounding networks based on the policy, or searches the surrounding network for the WLAN 500 selected based on the policy. The WLAN terminal 100 selects the WLAN 500 to be connected according to the priority order described in the policy. The WLAN terminal 100 may select the WLAN 500 to be connected based on the received radio wave intensity in addition to the priority order.
　ここで、探索に失敗した場合、又は受信電波強度が弱く十分なデータ通信レートの確保が期待できない場合、ＷＬＡＮ端末１００は、テザリングを開始する。 Here, if the search fails, or if the received radio wave intensity is weak and a sufficient data communication rate cannot be expected, the WLAN terminal 100 starts tethering.
　詳しくは、ステップＳ１１４で、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００へテザリング開始リクエストを送信する。このテザリング開始リクエストは、例えばＮＦＣ又はＢｌｕｅｔｏｏｔｈ等の近距離無線通信方式を用いて送信され得る。 Specifically, in step S114, the WLAN terminal 100 transmits a tethering start request to the WWAN terminal 200. This tethering start request can be transmitted using a short-range wireless communication system such as NFC or Bluetooth.
　次に、ステップＳ１１６で、テザリング開始リクエストを受けたＷＷＡＮ端末２００がアクセスポイントとして動作することで、テザリングを開始する。これにより、ＷＬＡＮ端末１００とＷＷＡＮ端末２００との間で、例えばＷｉ－Ｆｉを用いたデータ通信が開始される。なお、図７に示すように、このテザリング開始リクエストにより開始されるテザリング処理は、テザリング終了リクエストを受信する（ステップＳ１２６）まで継続される。 Next, in step S116, the WWAN terminal 200 that has received the tethering start request operates as an access point to start tethering. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the WWAN terminal 200. As shown in FIG. 7, the tethering process started by this tethering start request is continued until a tethering end request is received (step S126).
　次いで、ステップＳ１１８で、ＷＬＡＮ端末１００は、テザリング利用中にも、受信したポリシー及びアクセスネットワーク情報に基づいて、周囲のネットワークの探索を継続して行う（Ｓｃａｎ２）。ここでも、探索に失敗したものとする。 Next, in step S118, the WLAN terminal 100 continuously searches for surrounding networks based on the received policy and access network information even during tethering use (Scan2). Again, it is assumed that the search has failed.
　次に、ステップＳ１２０で、ＷＬＡＮ端末１００は、受信したポリシー及びアクセスネットワーク情報に基づいて、周囲のネットワークの探索を継続して行う（Ｓｃａｎ３）。ここでは、探索に成功したものとする。この場合、ＷＬＡＮ端末１００は、Ｐｒｏｂｅ　Ｒｅｑｕｅｓｔを基地局５１０へ送信してＰｒｏｂｅ　Ｒｅｓｐｏｎｓｅを受信し、対応する認証方式やＣａｐａｂｉｌｉｔｙを調査する。 Next, in step S120, the WLAN terminal 100 continuously searches for surrounding networks based on the received policy and access network information (Scan 3). Here, it is assumed that the search is successful. In this case, the WLAN terminal 100 transmits a Probe Request to the base station 510, receives the Probe Response, and investigates the corresponding authentication method and Capability.
　そして、ステップＳ１２２で、ＷＬＡＮ端末１００は、ＥＡＰ認証処理により、ＷＬＡＮ５００への認証を行う。この処理については、図８及び図９を参照して後述するため、ここでの詳細な説明は省略する。ＥＡＰ認証処理の間は、ＷＬＡＮ端末１００とＷＷＡＮ端末２００との間ではテザリングのための通信が行われており、この通信を用いてＥＡＰ認証処理のためのメッセージの送受信が行われる。 In step S122, the WLAN terminal 100 authenticates the WLAN 500 by EAP authentication processing. Since this process will be described later with reference to FIGS. 8 and 9, a detailed description thereof will be omitted here. During the EAP authentication process, communication for tethering is performed between the WLAN terminal 100 and the WWAN terminal 200, and a message for EAP authentication process is transmitted / received using this communication.
　ＥＡＰ認証処理に成功すると、ステップＳ１２４で、ＷＬＡＮ端末１００と基地局５１０との間で、ＷＬＡＮ通信のための接続が確立される。これにより、ＷＬＡＮ端末１００と基地局５１０との間で、例えばＷｉ－Ｆｉを用いたデータ通信が開始される。 If the EAP authentication process is successful, a connection for WLAN communication is established between the WLAN terminal 100 and the base station 510 in step S124. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the base station 510.
　次いで、ステップＳ１２６で、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００へテザリング終了リクエストを送信する。このテザリング終了リクエストは、例えばＮＦＣ又はＢｌｕｅｔｏｏｔｈ等の近距離無線通信方式、又はテザリングで利用中のＷＬＡＮを用いて送信され得る。 Next, in step S126, the WLAN terminal 100 transmits a tethering end request to the WWAN terminal 200. This tethering end request can be transmitted using a short-range wireless communication method such as NFC or Bluetooth, or a WLAN being used for tethering.
　以上、本実施形態に係る接続処理の一例を説明した。続いて、図８及び図９を参照して、ＥＡＰ認証処理（図７のステップＳ１１２）について詳細に説明する。 Heretofore, an example of connection processing according to the present embodiment has been described. Next, the EAP authentication process (step S112 in FIG. 7) will be described in detail with reference to FIGS.
　［３－２．ＥＡＰ認証処理］
　図８及び図９は、本実施形態に係る無線通信システム１において実行されるＥＡＰ認証処理の流れの一例を示すシーケンス図である。図８及び図９に示すように、シーケンスには、基地局３１０、ＷＷＡＮ端末２００、ＷＬＡＮ端末１００、基地局５１０、認証サーバ３４０、及び加入者情報サーバ３３０が関与する。なお、ＷＬＡＮ端末１００及びＷＷＡＮ端末２００に関しては、メッセージのやり取りに用いられる通信モジュールを、「モジュール」という文言を省略して記載している。例えば、ＷＬＡＮ（Ｗｉ－Ｆｉ）モジュール１１２を起点又は終点とするメッセージは、ＷＬＡＮモジュール１１２により送受信されることを示している。ＢＴモジュール１１４、ＷＷＡＮモジュール２１２、及びＢＴモジュール２１６についても同様である。 [3-2. EAP authentication process]
8 and 9 are sequence diagrams illustrating an example of the flow of EAP authentication processing executed in the wireless communication system 1 according to the present embodiment. As shown in FIG. 8 and FIG. 9, the base station 310, the WWAN terminal 200, the WLAN terminal 100, the base station 510, the authentication server 340, and the subscriber information server 330 are involved in the sequence. Note that with regard to the WLAN terminal 100 and the WWAN terminal 200, communication modules used for message exchange are described with the term “module” omitted. For example, a message having a WLAN (Wi-Fi) module 112 as a starting point or an ending point indicates that the WLAN module 112 transmits and receives. The same applies to the BT module 114, the WWAN module 212, and the BT module 216.
　ここで、上述したように、ＷＬＡＮ端末１００とＷＷＡＮ端末２００との間ではテザリングのための通信が行われており、この通信を用いてＥＡＰ認証処理のためのメッセージの送受信が行われる。一例として、本シーケンスでは、テザリングのために、ＷＬＡＮ端末１００とＷＷＡＮ端末２００との間でＢｌｕｅｔｏｏｔｈを用いた無線接続が確立されているものとする。 Here, as described above, communication for tethering is performed between the WLAN terminal 100 and the WWAN terminal 200, and a message for EAP authentication processing is transmitted and received using this communication. As an example, in this sequence, it is assumed that a wireless connection using Bluetooth is established between the WLAN terminal 100 and the WWAN terminal 200 for tethering.
　図８に示すように、まず、ステップＳ２０２で、ＷＬＡＮ端末１００は、基地局５１０へＡｓｓｏｃｉａｔｉｏｎを行う。ＷＬＡＮ端末１００は、Ａｓｓｏｃｉａｔｉｏｎにより、認証処理のための論理的な接続を確立する。ＷＬＡＮ端末１００は、認証処理以外の、例えばデータ通信を行うことはまだできない。 As shown in FIG. 8, first, in step S202, the WLAN terminal 100 performs association to the base station 510. The WLAN terminal 100 establishes a logical connection for authentication processing by association. The WLAN terminal 100 cannot perform data communication other than authentication processing, for example.
　次いで、ステップＳ２０４で、ＷＬＡＮ端末１００は、基地局５１０へ、ＥＡＰｏＬ－Ｓｔａｒｔを送信する。 Next, in step S204, the WLAN terminal 100 transmits EAPoL-Start to the base station 510.
　次いで、ステップＳ２０６で、基地局５１０は、ＷＬＡＮ端末１００へＥＡＰ－Ｒｅｑｕｅｓｔ／Ｉｄｅｎｔｉｔｙを送信する。 Next, in step S206, the base station 510 transmits EAP-Request / Identity to the WLAN terminal 100.
　次に、ステップＳ２０８で、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００へ、ステップＳ２０６で受信したＥＡＰ－Ｒｅｑｕｅｓｔ／Ｉｄｅｎｔｉｔｙを送信する。このメッセージは、ＷＷＡＮ端末２００に対して、ＥＡＰ－ＡＫＡで必要となるＩｄｅｎｔｉｔｙを生成するよう要求するメッセージである。 Next, in step S208, the WLAN terminal 100 transmits the EAP-Request / Identity received in step S206 to the WWAN terminal 200. This message is a message requesting the WWAN terminal 200 to generate an Identity required for EAP-AKA.
　次いで、ステップＳ２１０で、ＷＷＡＮ端末２００は、自身が有する加入者識別モジュール２３０を参照して、Ｉｄｅｎｔｉｔｙを生成する。例えば、制御部２４０は、加入者識別モジュール２３０であるＳＩＭカードに記録された情報に基づいて、Ｉｄｅｎｔｉｔｙを生成する。認証プロトコルがＥＡＰ－ＡＫＡの場合、ＩＭＳＩをもとにＩｄｅｎｔｉｔｙが生成される。 Next, in step S210, the WWAN terminal 200 refers to the subscriber identification module 230 that the WWAN terminal 200 has and generates an Identity. For example, the control unit 240 generates Identity based on information recorded on a SIM card that is the subscriber identification module 230. When the authentication protocol is EAP-AKA, Identity is generated based on IMSI.
　なお、ＩＭＳＩのフォーマットは以下の通りである。
　　＜ＭＣＣ：３桁＞＜ＭＮＣ：２又は３桁＞＜ＭＳＩＮ：最大１０桁＞ The IMSI format is as follows.
<MCC: 3 digits><MNC: 2 or 3 digits><MSIN: Maximum 10 digits>
　ここで、ＭＣＣ（Mobile　Country　Code）は、国を示す情報であり、ＭＮＣ（Mobile　Network　Code）は、事業者を示す情報であり、ＭＳＩＮ（Mobile Subscriber Identification Number）は、加入者識別コードを示す情報である。 Here, MCC (Mobile Country Code) is information indicating the country, MNC (Mobile Network Code) is information indicating the operator, and MSIN (Mobile Subscriber Identification Number) is information indicating the subscriber identification code. It is.
　また、Ｉｄｅｎｔｉｔｙのフォーマットは以下の通りである。
　　０＜ＩＭＳＩ＞＠ｗｌａｎ．ｍｎｃ＜ＭＮＣ＞．ｍｃｃ＜ＭＣＣ＞．３ｇｐｐｎｅｔｗｏｒｋ．ｏｒｇ Also, the format of Identity is as follows.
0 <IMSI> @wlan. mnc <MNC>. mcc <MCC>. 3gppnetwork. org
　例えば、ＭＮＣが３桁であり、ＩＭＳＩが「１２３４５６０１２３４５６７８」であった場合を想定する。この場合、Ｉｄｅｎｔｉｔｙは、「０１２３４５６０１２３４５６７８＠ｗｌａｎ．ｍｎｃ４５６．ｍｃｃ１２３．３ｇｐｐｎｅｔｗｏｒｋ．ｏｒｇ」となる。以上、ステップＳ２１０におけるＩｄｅｎｔｉｔｙの生成処理について説明した。 For example, it is assumed that the MNC is 3 digits and the IMSI is “1234560125345678”. In this case, Identity is “01234560125345678@wlan.mnc456.mcc123.3gppnetwork.org”. The identity generation processing in step S210 has been described above.
　次に、ステップＳ２１２で、ＷＷＡＮ端末２００は、ＥＡＰ－Ｒｅｓｐｏｎｓｅ／Ｉｄｅｎｔｉｔｙを、ＷＬＡＮ端末１００へ返信する。このメッセージには、ステップＳ２１０において生成されたＩｄｅｎｔｉｔｉｙが格納されている。 Next, in step S212, the WWAN terminal 200 returns EAP-Response / Identity to the WLAN terminal 100. This message stores the Identity generated in step S210.
　次いで、ステップＳ２１４で、ＷＬＡＮ端末１００は、受信したＥＡＰ－Ｒｅｓｐｏｎｓｅ／Ｉｄｅｎｔｉｔｙを、基地局５１０へ転送する。 Next, in step S214, the WLAN terminal 100 transfers the received EAP-Response / Identity to the base station 510.
　次に、ステップＳ２１６で、基地局５１０は、ＲＡＤＩＵＳ－Ａｃｃｅｓｓ－Ｒｅｑｕｅｓｔを認証サーバ３４０へ送信する。このメッセージには、ＷＷＡＮ端末２００により生成されたＩｄｅｎｔｉｔｙが格納される。 Next, in step S216, the base station 510 transmits RADIUS-Access-Request to the authentication server 340. In this message, the Identity generated by the WWAN terminal 200 is stored.
　次いで、ステップＳ２１８で、認証サーバ３４０は、Ｒｅｔｒｅｉｖｅ－Ａｕｔｈｅｎｔｉｃａｔｉｏｎ－Ｖｅｃｔｏｒを加入者情報サーバ３３０へ送信して、Ｉｄｅｎｔｉｔｉｙに対する認証ベクタを要求する。このメッセージには、ＷＷＡＮ端末２００により生成されたＩｄｅｎｔｉｔｙが格納される。認証ベクタとは、接続してきた端末を認証する際に必要とされる情報の集合であり、ＥＡＰ－ＡＫＡの場合は以下の情報から構成される。 Next, in step S218, the authentication server 340 transmits a Retrieval-Authentication-Vector to the subscriber information server 330, and requests an authentication vector for Identity. In this message, the Identity generated by the WWAN terminal 200 is stored. An authentication vector is a set of information required for authenticating a connected terminal. In the case of EAP-AKA, the authentication vector includes the following information.
　　ＲＡＮＤ：ランダム値。チャレンジとして利用される。
　　ＡＵＴＮ：端末がネットワークを認証するための値。
　　ＸＲＥＳ：チャレンジに対して期待される応答値。
　　ＩＫ　　：メッセージ完全性検証用鍵。
　　ＣＫ　　：メッセージ暗号化用鍵。 RAND: random value. Used as a challenge.
AUTN: A value for the terminal to authenticate the network.
XRES: expected response value for challenge.
IK: Message integrity verification key.
CK: Key for message encryption.
　次に、ステップＳ２２０で、加入者情報サーバ３３０は、ＡＫＡアルゴリズムを実行して、受信したメッセージに格納されたＩｄｅｎｔｉｔｉｙに対応する認証ベクタを生成する。 Next, in step S220, the subscriber information server 330 executes the AKA algorithm and generates an authentication vector corresponding to the Identity stored in the received message.
　次いで、図９に示すように、ステップＳ２２２で、加入者情報サーバ３３０は、生成した認証ベクタを認証サーバ３４０へ送信する。 Next, as shown in FIG. 9, in step S222, the subscriber information server 330 transmits the generated authentication vector to the authentication server 340.
　次に、ステップＳ２２４で、認証サーバ３４０は、ＲＡＤＩＵＳ－Ａｃｃｅｓｓ－Ｃｈａｌｌｅｎｇｅを基地局５１０へ送信する。このメッセージには、加入者情報サーバ３３０により生成された認証ベクタが格納される。ここで、認証サーバ３４０は、新たにＭＡＣ（Message　Authentication　Code）を算出して、メッセージに追加する。このＭＡＣは、ＷＬＡＮ端末１００がこのメッセージの完全性（Integrity）を検証するために用いられる。 Next, in step S224, the authentication server 340 transmits RADIUS-Access-Challenge to the base station 510. In this message, the authentication vector generated by the subscriber information server 330 is stored. Here, the authentication server 340 newly calculates a MAC (Message Authentication Code) and adds it to the message. This MAC is used by the WLAN terminal 100 to verify the integrity of this message.
　次いで、ステップＳ２２６で、基地局５１０は、ＥＡＰ－Ｒｅｑｕｅｓｔ／ＡＫＡ－ＣｈａｌｌｅｎｇｅをＷＬＡＮ端末１００へ送信する。このメッセージには、認証ベクタのＲＡＮＤ及びＡＵＴＮ、並びにＭＡＣが含まれる。認証ベクタのＸＲＥＳ、ＩＫ及びＣＫは基地局５１０により保持され、ＷＬＡＮ端末１００へは送信されない。 Next, in step S226, the base station 510 transmits EAP-Request / AKA-Challenge to the WLAN terminal 100. This message includes authentication vectors RAND and AUTN, and MAC. The authentication vectors XRES, IK, and CK are held by the base station 510 and are not transmitted to the WLAN terminal 100.
　次に、ステップＳ２２８で、ＷＬＡＮ端末１００は、ＥＡＰ－Ｒｅｑｕｅｓｔ／ＡＫＡ－ＣｈａｌｌｅｎｇｅをＷＷＡＮ端末２００へ送信する。このメッセージは、ＷＷＡＮ端末２００に対して、応答値（ＲＥＳ）及びセッション鍵(ＩＫ，ＣＫ)を生成するよう要求するメッセージである。 Next, in step S228, the WLAN terminal 100 transmits EAP-Request / AKA-Challenge to the WWAN terminal 200. This message is a message requesting the WWAN terminal 200 to generate a response value (RES) and a session key (IK, CK).
　次いで、ステップＳ２３０で、ＷＷＡＮ端末２００は、ＡＫＡアルゴリズムを実行して、受信したＥＡＰ－Ｒｅｑｕｅｓｔ／ＡＫＡ－Ｃｈａｌｌｅｎｇｅに対応するＲＥＳ、ＭＡＣ、及びセッション鍵（ＩＫ、ＣＫ）を生成する。 Next, in step S230, the WWAN terminal 200 executes the AKA algorithm and generates the RES, MAC, and session key (IK, CK) corresponding to the received EAP-Request / AKA-Challenge.
　次に、ステップＳ２３２で、ＷＷＡＮ端末２００は、ＥＡＰ－Ｒｅｓｐｏｎｓｅ／ＡＫＡ－ＣｈａｌｌｅｎｇｅをＷＬＡＮ端末１００へ送信する。このメッセージには、ＷＷＡＮ端末２００が生成したＲＥＳ、ＭＡＣ、及びセッション鍵が格納される。 Next, in step S232, the WWAN terminal 200 transmits EAP-Response / AKA-Challenge to the WLAN terminal 100. In this message, the RES, MAC, and session key generated by the WWAN terminal 200 are stored.
　次いで、ステップＳ２３４で、ＷＬＡＮ端末１００は、受信したＥＡＰ－Ｒｅｓｐｏｎｓｅ／ＡＫＡ－Ｃｈａｌｌｅｎｇｅを基地局５１０へ転送する。 Next, in step S234, the WLAN terminal 100 transfers the received EAP-Response / AKA-Challenge to the base station 510.
　次に、ステップＳ２３６で、基地局５１０は、ＲＡＤＩＵＳ－Ａｃｃｅｓｓ－Ｒｅｑｕｅｓｔを認証サーバ３４０へ送信する。このメッセージには、ＷＷＡＮ端末２００により生成されたＲＥＳ、ＭＡＣ、及びセッション鍵（ＩＫ、ＣＫ）が格納される。 Next, in step S 236, the base station 510 transmits RADIUS-Access-Request to the authentication server 340. This message stores the RES, MAC, and session keys (IK, CK) generated by the WWAN terminal 200.
　次いで、ステップＳ２３８で、認証サーバ３４０は、受信したＲＥＳを検証する。詳しくは、認証サーバ３４０は、ＷＷＡＮ端末２００により生成されたＲＥＳと加入者情報サーバ３３０により生成されたＸＲＥＳとが一致すること、及びＭＡＣによりメッセージの完全性を検証する。 Next, in step S238, the authentication server 340 verifies the received RES. Specifically, the authentication server 340 verifies that the RES generated by the WWAN terminal 200 matches the XRES generated by the subscriber information server 330 and the integrity of the message by MAC.
　次に、ステップＳ２４０で、認証サーバ３４０は、ＲＡＤＩＵＳ－Ａｃｃｅｓｓ－Ａｃｃｅｐｔを基地局５１０へ送信する。このメッセージは、接続を許可することを示すものである。 Next, in step S240, the authentication server 340 transmits RADIUS-Access-Accept to the base station 510. This message indicates that the connection is permitted.
　次いで、ステップＳ２４２で、基地局５１０は、ＥＡＰ－ＳｕｃｃｅｓｓをＷＬＡＮ端末１００へ送信する。このメッセージは、ＷＬＡＮ端末１００に対して、認証処理が成功したことを示すものである。 Next, in step S242, the base station 510 transmits EAP-Success to the WLAN terminal 100. This message indicates that the authentication process has been successful for the WLAN terminal 100.
　次に、ステップＳ２４４で、基地局５１０は、ＥＡＰｏＬ－ＫｅｙをＷＬＡＮ端末１００へ送信する。このメッセージは、ＷＬＡＮ端末１００と基地局５１０との間で使用する暗号化通信用の鍵を送付するものである。 Next, in step S244, the base station 510 transmits EAPoL-Key to the WLAN terminal 100. This message is used to send a key for encrypted communication used between the WLAN terminal 100 and the base station 510.
　以上説明したＥＡＰ認証処理を経て、ステップＳ２４６で、ＷＬＡＮ端末１００と基地局５１０との間で、ＷＬＡＮ通信のための接続が完了する。これにより、ＷＬＡＮ端末１００と基地局５１０との間で、例えばＷｉ－Ｆｉを用いたデータ通信が開始される。 Through the EAP authentication process described above, in step S246, the connection for WLAN communication is completed between the WLAN terminal 100 and the base station 510. Thereby, for example, data communication using Wi-Fi is started between the WLAN terminal 100 and the base station 510.
　以上、本実施形態に係るＥＡＰ認証処理の一例を説明した。 Heretofore, an example of the EAP authentication process according to the present embodiment has been described.
　［３－３．ネットワーク切替処理］
　ＷＬＡＮ端末１００は、ＷＬＡＮへの接続又はテザリングの利用といった、ネットワークの接続先の切り替えを多様な契機で行う。以下では、図１０を参照して、ＷＬＡＮ端末１００によるネットワークの接続先の切り替え判断について説明する。図１０は、本実施形態に係るＷＬＡＮ端末１００において実行されるネットワーク切替処理の流れの一例を示すフローチャートである。 [3-3. Network switching process]
The WLAN terminal 100 performs switching of network connection destinations such as connection to a WLAN or use of tethering at various occasions. Hereinafter, with reference to FIG. 10, determination of switching of a network connection destination by the WLAN terminal 100 will be described. FIG. 10 is a flowchart illustrating an example of the flow of network switching processing executed in the WLAN terminal 100 according to the present embodiment.
　図１０に示すように、まず、ステップＳ３０２で、制御部１３０は、周囲の無線ネットワークを探索する。詳しくは、制御部１３０は、ＷＷＡＮ端末２００から受信されたポリシーに合致するネットワークを探索して、周囲に利用可能な優先順位の高いＷＬＡＮ５００が存在するか否かを判定する。 As shown in FIG. 10, first, in step S302, the control unit 130 searches for a surrounding wireless network. Specifically, the control unit 130 searches for a network that matches the policy received from the WWAN terminal 200 and determines whether there is a WLAN 500 with high priority available in the surrounding area.
　次いで、ステップＳ３０４で、制御部１３０は、ネットワークの探索を終了するか否かを判定する。例えば、制御部１３０は、ネットワークの探索の終了を指示するユーザ操作や、電源ＯＦＦされた場合に終了すると判定し、他は終了しないと判定する。 Next, in step S304, the control unit 130 determines whether or not to end the network search. For example, the control unit 130 determines to end when a user operation instructing the end of network search or when the power is turned off, and determines that the other does not end.
　終了すると判定された場合（Ｓ３０４／ＹＥＳ）、処理は終了する。一方で、終了しないと判定された場合（Ｓ３０４／ＮＯ）、ネットワークの探索を継続し、ステップＳ３０６で、制御部１３０はポリシーに合致するネットワークが周囲にあるか否かを判定する。 If it is determined to end (S304 / YES), the process ends. On the other hand, if it is determined not to end (S304 / NO), the network search is continued, and in step S306, the control unit 130 determines whether there is a network that matches the policy.
　ポリシーに合致するネットワークがあると判定された場合（Ｓ３０６／ＹＥＳ）、ステップＳ３０８で、制御部１３０は、現在公衆ＷＬＡＮサービスを利用中であるか否かを判定する。 If it is determined that there is a network that matches the policy (S306 / YES), in step S308, the control unit 130 determines whether or not the public WLAN service is currently being used.
　公衆ＷＬＡＮサービスを利用中であると判定された場合（Ｓ３０８／ＹＥＳ）、処理は再度ステップＳ３０２に戻る。 If it is determined that the public WLAN service is being used (S308 / YES), the process returns to step S302 again.
　一方で、公衆ＷＬＡＮサービスを利用中でないと判定された場合（Ｓ３０８／ＮＯ）、ステップＳ３１０で、制御部１３０は、テザリング終了処理を行う。なお、ＷＬＡＮ端末１００がテザリング中でない場合は、本ステップは省略されてもよい。 On the other hand, when it is determined that the public WLAN service is not being used (S308 / NO), in step S310, the control unit 130 performs a tethering end process. Note that this step may be omitted when the WLAN terminal 100 is not tethering.
　そして、ステップＳ３１２で、制御部１３０は、ＷＬＡＮ５００への接続処理を行う。ここでの処理は、上記図７を参照して説明した通りであるので、再度の説明は省略する。その後、処理は再度ステップＳ３０２に戻る。 In step S312, the control unit 130 performs connection processing to the WLAN 500. Since the processing here is as described with reference to FIG. 7, the description thereof is omitted. Thereafter, the process returns to step S302 again.
　また、上記ステップＳ３０６で、ポリシーに合致するＷＬＡＮ５００がないと判定された場合（Ｓ３０６／ＮＯ）、ステップＳ３１４で、制御部１３０は、現在テザリングを利用中であるか否かを判定する。 If it is determined in step S306 that there is no WLAN 500 that matches the policy (S306 / NO), in step S314, the control unit 130 determines whether tethering is currently being used.
　テザリングを利用中であると判定された場合（Ｓ３１４／ＹＥＳ）、処理は再度ステップＳ３０２に戻る。 If it is determined that tethering is being used (S314 / YES), the process returns to step S302 again.
　テザリングを利用中でないと判定された場合（Ｓ３１４／ＮＯ）、ステップＳ３１６で、ＷＬＡＮ端末１００は、テザリングを開始する。そして、処理は再度ステップＳ３０２に戻る。 When it is determined that tethering is not being used (S314 / NO), the WLAN terminal 100 starts tethering in step S316. Then, the process returns to step S302 again.
　以上、本実施形態に係るネットワーク切替処理の一例を説明した。なお、図１０には記載されていないが、ＷＬＡＮ端末１００は、定期的にポリシーを更新して記憶部１２０に記憶されるポリシーを最新の状態に保つものとする。これにより、ＷＬＡＮ端末１００は、より接続条件の良い公衆ＷＬＡＮへアクセス可能となる。 Heretofore, an example of the network switching process according to the present embodiment has been described. Although not shown in FIG. 10, the WLAN terminal 100 periodically updates the policy and keeps the policy stored in the storage unit 120 in the latest state. As a result, the WLAN terminal 100 can access a public WLAN with better connection conditions.
　＜４．応用例＞
　本開示に係る技術は、様々な製品へ応用可能である。例えば、無線通信装置１００及び無線通信装置２００は、スマートフォン、タブレットＰＣ（Personal　Computer）、ノートＰＣ、携帯型ゲーム端末若しくはデジタルカメラなどのモバイル端末、テレビジョン受像機、プリンタ、デジタルスキャナ若しくはネットワークストレージなどの固定端末、又はカーナビゲーション装置などの車載端末として実現されてもよい。また、無線通信装置１００及び無線通信装置２００は、スマートメータ、自動販売機、遠隔監視装置又はＰＯＳ（Point　Of　Sale）端末などの、Ｍ２Ｍ（Machine　To　Machine）通信を行う端末（ＭＴＣ（Machine　Type　Communication）端末ともいう）として実現されてもよい。さらに、無線通信装置１００及び無線通信装置２００は、これら端末に搭載される無線通信モジュール（例えば、１つのダイで構成される集積回路モジュール）であってもよい。 <4. Application example>
The technology according to the present disclosure can be applied to various products. For example, the wireless communication device 100 and the wireless communication device 200 include a smartphone, a tablet PC (Personal Computer), a notebook PC, a mobile terminal such as a portable game terminal or a digital camera, a television receiver, a printer, a digital scanner, a network storage, or the like. It may be realized as an in-vehicle terminal such as a fixed terminal or a car navigation device. The wireless communication device 100 and the wireless communication device 200 are terminals (MTC (Machine Type Communication) such as smart meters, vending machines, remote monitoring devices, or point-of-sale (POS) terminals that perform M2M (Machine To Machine) communication. ) (Also referred to as a terminal). Further, the wireless communication device 100 and the wireless communication device 200 may be wireless communication modules (for example, integrated circuit modules configured by one die) mounted on these terminals.
　　［４－１．第１の応用例］
　図１１は、本開示に係る技術が適用され得るスマートフォン９００の概略的な構成の一例を示すブロック図である。スマートフォン９００は、プロセッサ９０１、メモリ９０２、ストレージ９０３、外部接続インタフェース９０４、カメラ９０６、センサ９０７、マイクロフォン９０８、入力デバイス９０９、表示デバイス９１０、スピーカ９１１、無線通信インタフェース９１３、アンテナスイッチ９１４、アンテナ９１５、バス９１７、バッテリー９１８及び補助コントローラ９１９を備える。 [4-1. First application example]
FIG. 11 is a block diagram illustrating an example of a schematic configuration of a smartphone 900 to which the technology according to the present disclosure can be applied. The smartphone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 913, an antenna switch 914, an antenna 915, A bus 917, a battery 918, and an auxiliary controller 919 are provided.
　プロセッサ９０１は、例えばＣＰＵ（Central　Processing　Unit）又はＳｏＣ（System　on　Chip）であってよく、スマートフォン９００のアプリケーションレイヤ及びその他のレイヤの機能を制御する。メモリ９０２は、ＲＡＭ（Random　Access　Memory）及びＲＯＭ（Read　Only　Memory）を含み、プロセッサ９０１により実行されるプログラム及びデータを記憶する。ストレージ９０３は、半導体メモリ又はハードディスクなどの記憶媒体を含み得る。外部接続インタフェース９０４は、メモリーカード又はＵＳＢ（Universal　Serial　Bus）デバイスなどの外付けデバイスをスマートフォン９００へ接続するためのインタフェースである。 The processor 901 may be, for example, a CPU (Central Processing Unit) or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smartphone 900. The memory 902 includes a RAM (Random Access Memory) and a ROM (Read Only Memory), and stores programs and data executed by the processor 901. The storage 903 can include a storage medium such as a semiconductor memory or a hard disk. The external connection interface 904 is an interface for connecting an external device such as a memory card or a USB (Universal Serial Bus) device to the smartphone 900.
　カメラ９０６は、例えば、ＣＣＤ（Charge　Coupled　Device）又はＣＭＯＳ（Complementary　Metal　Oxide　Semiconductor）などの撮像素子を有し、撮像画像を生成する。センサ９０７は、例えば、測位センサ、ジャイロセンサ、地磁気センサ及び加速度センサなどのセンサ群を含み得る。マイクロフォン９０８は、スマートフォン９００へ入力される音声を音声信号へ変換する。入力デバイス９０９は、例えば、表示デバイス９１０の画面上へのタッチを検出するタッチセンサ、キーパッド、キーボード、ボタン又はスイッチなどを含み、ユーザからの操作又は情報入力を受け付ける。表示デバイス９１０は、液晶ディスプレイ（ＬＣＤ）又は有機発光ダイオード（ＯＬＥＤ）ディスプレイなどの画面を有し、スマートフォン９００の出力画像を表示する。スピーカ９１１は、スマートフォン９００から出力される音声信号を音声に変換する。 The camera 906 includes, for example, an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and generates a captured image. The sensor 907 may include a sensor group such as a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts sound input to the smartphone 900 into an audio signal. The input device 909 includes, for example, a touch sensor that detects a touch on the screen of the display device 910, a keypad, a keyboard, a button, or a switch, and receives an operation or information input from a user. The display device 910 has a screen such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900. The speaker 911 converts an audio signal output from the smartphone 900 into audio.
　無線通信インタフェース９１３は、ＩＥＥＥ８０２．１１ａ、１１ｂ、１１ｇ、１１ｎ、１１ａｃ及び１１ａｄなどの無線ＬＡＮ標準のうちの１つ以上をサポートし、無線通信を実行する。無線通信インタフェース９１３は、インフラストラクチャーモードにおいては、他の装置と無線ＬＡＮアクセスポイントを介して通信し得る。また、無線通信インタフェース９１３は、アドホックモード又はＷｉ－Ｆｉ　Ｄｉｒｅｃｔ（登録商標）等のダイレクト通信モードにおいては、他の装置と直接的に通信し得る。なお、Ｗｉ－Ｆｉ　Ｄｉｒｅｃｔでは、アドホックモードとは異なり２つの端末の一方がアクセスポイントとして動作するが、通信はそれら端末間で直接的に行われる。無線通信インタフェース９１３は、典型的には、ベースバンドプロセッサ、ＲＦ（Radio　Frequency）回路及びパワーアンプなどを含み得る。無線通信インタフェース９１３は、通信制御プログラムを記憶するメモリ、当該プログラムを実行するプロセッサ及び関連する回路を集積したワンチップのモジュールであってもよい。無線通信インタフェース９１３は、無線ＬＡＮ方式に加えて、近距離無線通信方式、近接無線通信方式又はセルラ通信方式などの他の種類の無線通信方式をサポートしてもよい。アンテナスイッチ９１４は、無線通信インタフェース９１３に含まれる複数の回路（例えば、異なる無線通信方式のための回路）の間でアンテナ９１５の接続先を切り替える。アンテナ９１５は、単一の又は複数のアンテナ素子（例えば、ＭＩＭＯアンテナを構成する複数のアンテナ素子）を有し、無線通信インタフェース９１３による無線信号の送信及び受信のために使用される。 The wireless communication interface 913 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and performs wireless communication. The wireless communication interface 913 can communicate with other devices via a wireless LAN access point in the infrastructure mode. In addition, the wireless communication interface 913 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct (registered trademark). In Wi-Fi Direct, unlike the ad hoc mode, one of two terminals operates as an access point, but communication is performed directly between the terminals. The wireless communication interface 913 can typically include a baseband processor, an RF (Radio Frequency) circuit, a power amplifier, and the like. The wireless communication interface 913 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated. The wireless communication interface 913 may support other types of wireless communication methods such as a short-range wireless communication method, a proximity wireless communication method, or a cellular communication method in addition to the wireless LAN method. The antenna switch 914 switches the connection destination of the antenna 915 among a plurality of circuits (for example, circuits for different wireless communication schemes) included in the wireless communication interface 913. The antenna 915 includes a single antenna element or a plurality of antenna elements (for example, a plurality of antenna elements constituting a MIMO antenna), and is used for transmission and reception of radio signals by the radio communication interface 913.
　なお、図１１の例に限定されず、スマートフォン９００は、複数のアンテナ（例えば、無線ＬＡＮ用のアンテナ及び近接無線通信方式用のアンテナ、など）を備えてもよい。その場合に、アンテナスイッチ９１４は、スマートフォン９００の構成から省略されてもよい。 Note that the smartphone 900 is not limited to the example of FIG. 11, and may include a plurality of antennas (for example, an antenna for a wireless LAN and an antenna for a proximity wireless communication method). In that case, the antenna switch 914 may be omitted from the configuration of the smartphone 900.
　バス９１７は、プロセッサ９０１、メモリ９０２、ストレージ９０３、外部接続インタフェース９０４、カメラ９０６、センサ９０７、マイクロフォン９０８、入力デバイス９０９、表示デバイス９１０、スピーカ９１１、無線通信インタフェース９１３及び補助コントローラ９１９を互いに接続する。バッテリー９１８は、図中に破線で部分的に示した給電ラインを介して、図１１に示したスマートフォン９００の各ブロックへ電力を供給する。補助コントローラ９１９は、例えば、スリープモードにおいて、スマートフォン９００の必要最低限の機能を動作させる。 The bus 917 connects the processor 901, memory 902, storage 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 913, and auxiliary controller 919 to each other. . The battery 918 supplies power to each block of the smartphone 900 illustrated in FIG. 11 through a power supply line partially illustrated by a broken line in the drawing. For example, the auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode.
　図１１に示したスマートフォン９００は、無線通信装置１００として動作し得る。この場合、例えば図４を参照して説明した無線通信部１１０、記憶部１２０、及び制御部１３０は、無線通信インタフェース９１３において実装されてもよい。また、これら機能の少なくとも一部は、プロセッサ９０１又は補助コントローラ９１９において実装されてもよい。 The smartphone 900 illustrated in FIG. 11 can operate as the wireless communication device 100. In this case, for example, the wireless communication unit 110, the storage unit 120, and the control unit 130 described with reference to FIG. 4 may be implemented in the wireless communication interface 913. In addition, at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
　図１１に示したスマートフォン９００は、無線通信装置２００として動作し得る。この場合、例えば図６を参照して説明した無線通信部２１０、記憶部２２０、加入者識別モジュール２３０、及び制御部２４０は、無線通信インタフェース９１３において実装されてもよい。また、これら機能の少なくとも一部は、プロセッサ９０１又は補助コントローラ９１９において実装されてもよい。 The smartphone 900 illustrated in FIG. 11 can operate as the wireless communication device 200. In this case, for example, the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 913. In addition, at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
　なお、スマートフォン９００は、プロセッサ９０１がアプリケーションレベルでアクセスポイント機能を実行することにより、無線アクセスポイント（ソフトウェアＡＰ）として動作してもよい。また、無線通信インタフェース９１３が無線アクセスポイント機能を有していてもよい。 Note that the smartphone 900 may operate as a wireless access point (software AP) when the processor 901 executes the access point function at the application level. Further, the wireless communication interface 913 may have a wireless access point function.
　　［４－２．第２の応用例］
　図１２は、本開示に係る技術が適用され得るカーナビゲーション装置９２０の概略的な構成の一例を示すブロック図である。カーナビゲーション装置９２０は、プロセッサ９２１、メモリ９２２、ＧＰＳ（Global　Positioning　System）モジュール９２４、センサ９２５、データインタフェース９２６、コンテンツプレーヤ９２７、記憶媒体インタフェース９２８、入力デバイス９２９、表示デバイス９３０、スピーカ９３１、無線通信インタフェース９３３、アンテナスイッチ９３４、アンテナ９３５及びバッテリー９３８を備える。 [4-2. Second application example]
FIG. 12 is a block diagram illustrating an example of a schematic configuration of a car navigation device 920 to which the technology according to the present disclosure can be applied. The car navigation device 920 includes a processor 921, a memory 922, a GPS (Global Positioning System) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, and wireless communication. An interface 933, an antenna switch 934, an antenna 935, and a battery 938 are provided.
　プロセッサ９２１は、例えばＣＰＵ又はＳｏＣであってよく、カーナビゲーション装置９２０のナビゲーション機能及びその他の機能を制御する。メモリ９２２は、ＲＡＭ及びＲＯＭを含み、プロセッサ９２１により実行されるプログラム及びデータを記憶する。 The processor 921 may be a CPU or SoC, for example, and controls the navigation function and other functions of the car navigation device 920. The memory 922 includes RAM and ROM, and stores programs and data executed by the processor 921.
　ＧＰＳモジュール９２４は、ＧＰＳ衛星から受信されるＧＰＳ信号を用いて、カーナビゲーション装置９２０の位置（例えば、緯度、経度及び高度）を測定する。センサ９２５は、例えば、ジャイロセンサ、地磁気センサ及び気圧センサなどのセンサ群を含み得る。データインタフェース９２６は、例えば、図示しない端子を介して車載ネットワーク９４１に接続され、車速データなどの車両側で生成されるデータを取得する。 The GPS module 924 measures the position (for example, latitude, longitude, and altitude) of the car navigation device 920 using GPS signals received from GPS satellites. The sensor 925 may include a sensor group such as a gyro sensor, a geomagnetic sensor, and an atmospheric pressure sensor. The data interface 926 is connected to the in-vehicle network 941 through a terminal (not shown), for example, and acquires data generated on the vehicle side such as vehicle speed data.
　コンテンツプレーヤ９２７は、記憶媒体インタフェース９２８に挿入される記憶媒体（例えば、ＣＤ又はＤＶＤ）に記憶されているコンテンツを再生する。入力デバイス９２９は、例えば、表示デバイス９３０の画面上へのタッチを検出するタッチセンサ、ボタン又はスイッチなどを含み、ユーザからの操作又は情報入力を受け付ける。表示デバイス９３０は、ＬＣＤ又はＯＬＥＤディスプレイなどの画面を有し、ナビゲーション機能又は再生されるコンテンツの画像を表示する。スピーカ９３１は、ナビゲーション機能又は再生されるコンテンツの音声を出力する。 The content player 927 reproduces content stored in a storage medium (for example, CD or DVD) inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch that detects a touch on the screen of the display device 930, and receives an operation or information input from the user. The display device 930 has a screen such as an LCD or an OLED display, and displays a navigation function or an image of content to be reproduced. The speaker 931 outputs the navigation function or the audio of the content to be played back.
　無線通信インタフェース９３３は、ＩＥＥＥ８０２．１１ａ、１１ｂ、１１ｇ、１１ｎ、１１ａｃ及び１１ａｄなどの無線ＬＡＮ標準のうちの１つ以上をサポートし、無線通信を実行する。無線通信インタフェース９３３は、インフラストラクチャーモードにおいては、他の装置と無線ＬＡＮアクセスポイントを介して通信し得る。また、無線通信インタフェース９３３は、アドホックモード又はＷｉ－Ｆｉ　Ｄｉｒｅｃｔ等のダイレクト通信モードにおいては、他の装置と直接的に通信し得る。無線通信インタフェース９３３は、典型的には、ベースバンドプロセッサ、ＲＦ回路及びパワーアンプなどを含み得る。無線通信インタフェース９３３は、通信制御プログラムを記憶するメモリ、当該プログラムを実行するプロセッサ及び関連する回路を集積したワンチップのモジュールであってもよい。無線通信インタフェース９３３は、無線ＬＡＮ方式に加えて、近距離無線通信方式、近接無線通信方式又はセルラ通信方式などの他の種類の無線通信方式をサポートしてもよい。アンテナスイッチ９３４は、無線通信インタフェース９３３に含まれる複数の回路の間でアンテナ９３５の接続先を切り替える。アンテナ９３５は、単一の又は複数のアンテナ素子を有し、無線通信インタフェース９３３による無線信号の送信及び受信のために使用される。 The wireless communication interface 933 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and executes wireless communication. The wireless communication interface 933 can communicate with other devices via a wireless LAN access point in the infrastructure mode. In addition, the wireless communication interface 933 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct. The wireless communication interface 933 may typically include a baseband processor, an RF circuit, a power amplifier, and the like. The wireless communication interface 933 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated. In addition to the wireless LAN system, the wireless communication interface 933 may support other types of wireless communication systems such as a short-range wireless communication system, a proximity wireless communication system, or a cellular communication system. The antenna switch 934 switches the connection destination of the antenna 935 among a plurality of circuits included in the wireless communication interface 933. The antenna 935 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 933.
　なお、図１２の例に限定されず、カーナビゲーション装置９２０は、複数のアンテナを備えてもよい。その場合に、アンテナスイッチ９３４は、カーナビゲーション装置９２０の構成から省略されてもよい。 Note that the car navigation device 920 is not limited to the example of FIG. 12, and may include a plurality of antennas. In that case, the antenna switch 934 may be omitted from the configuration of the car navigation device 920.
　バッテリー９３８は、図中に破線で部分的に示した給電ラインを介して、図１２に示したカーナビゲーション装置９２０の各ブロックへ電力を供給する。また、バッテリー９３８は、車両側から給電される電力を蓄積する。 The battery 938 supplies power to each block of the car navigation apparatus 920 shown in FIG. 12 through a power supply line partially shown by a broken line in the drawing. Further, the battery 938 stores electric power supplied from the vehicle side.
　図１２に示したカーナビゲーション装置９２０は、無線通信装置１００として動作し得る。この場合、例えば図４を参照して説明した無線通信部１１０、記憶部１２０、及び制御部１３０は、無線通信インタフェース９３３において実装されてもよい。また、これら機能の少なくとも一部は、プロセッサ９２１において実装されてもよい。 12 can operate as the wireless communication device 100. The car navigation device 920 illustrated in FIG. In this case, for example, the wireless communication unit 110, the storage unit 120, and the control unit 130 described with reference to FIG. 4 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
　図１２に示したカーナビゲーション装置９２０は、無線通信装置２００として動作し得る。この場合、例えば図６を参照して説明した無線通信部２１０、記憶部２２０、加入者識別モジュール２３０、及び制御部２４０は、無線通信インタフェース９３３において実装されてもよい。また、これら機能の少なくとも一部は、プロセッサ９２１において実装されてもよい。 12 may operate as the wireless communication device 200. The car navigation device 920 illustrated in FIG. In this case, for example, the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
　また、本開示に係る技術は、上述したカーナビゲーション装置９２０の１つ以上のブロックと、車載ネットワーク９４１と、車両側モジュール９４２とを含む車載システム（又は車両）９４０として実現されてもよい。車両側モジュール９４２は、車速、エンジン回転数又は故障情報などの車両側データを生成し、生成したデータを車載ネットワーク９４１へ出力する。 Also, the technology according to the present disclosure may be realized as an in-vehicle system (or vehicle) 940 including one or more blocks of the car navigation device 920 described above, an in-vehicle network 941, and a vehicle side module 942. The vehicle-side module 942 generates vehicle-side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.
　　［４－３．第３の応用例］
　図１３は、本開示に係る技術が適用され得る無線アクセスポイント９５０の概略的な構成の一例を示すブロック図である。無線アクセスポイント９５０は、コントローラ９５１、メモリ９５２、入力デバイス９５４、表示デバイス９５５、ネットワークインタフェース９５７、無線通信インタフェース９６３、アンテナスイッチ９６４及びアンテナ９６５を備える。 [4-3. Third application example]
FIG. 13 is a block diagram illustrating an example of a schematic configuration of a wireless access point 950 to which the technology according to the present disclosure can be applied. The wireless access point 950 includes a controller 951, a memory 952, an input device 954, a display device 955, a network interface 957, a wireless communication interface 963, an antenna switch 964, and an antenna 965.
　コントローラ９５１は、例えばＣＰＵ又はＤＳＰ（Digital　Signal　Processor）であってよく、無線アクセスポイント９５０のＩＰ（Internet　Protocol）レイヤ及びより上位のレイヤの様々な機能（例えば、アクセス制限、ルーティング、暗号化、ファイアウォール及びログ管理など）を動作させる。メモリ９５２は、ＲＡＭ及びＲＯＭを含み、コントローラ９５１により実行されるプログラム、及び様々な制御データ（例えば、端末リスト、ルーティングテーブル、暗号鍵、セキュリティ設定及びログなど）を記憶する。 The controller 951 may be a CPU or a DSP (Digital Signal Processor), for example, and various functions (for example, access restriction, routing, encryption, firewall) of the IP (Internet Protocol) layer and higher layers of the wireless access point 950 And log management). The memory 952 includes a RAM and a ROM, and stores programs executed by the controller 951 and various control data (for example, a terminal list, a routing table, an encryption key, security settings, and a log).
　入力デバイス９５４は、例えば、ボタン又はスイッチなどを含み、ユーザからの操作を受け付ける。表示デバイス９５５は、ＬＥＤランプなどを含み、無線アクセスポイント９５０の動作ステータスを表示する。 The input device 954 includes, for example, a button or a switch and receives an operation from the user. The display device 955 includes an LED lamp and the like, and displays the operation status of the wireless access point 950.
　ネットワークインタフェース９５７は、無線アクセスポイント９５０が有線通信ネットワーク９５８に接続するための有線通信インタフェースである。ネットワークインタフェース９５７は、複数の接続端子を有してもよい。有線通信ネットワーク９５８は、イーサネット（登録商標）などのＬＡＮであってもよく、又はＷＡＮ（Wide　Area　Network）であってもよい。 The network interface 957 is a wired communication interface for connecting the wireless access point 950 to the wired communication network 958. The network interface 957 may have a plurality of connection terminals. The wired communication network 958 may be a LAN such as Ethernet (registered trademark), or may be a WAN (Wide Area Network).
　無線通信インタフェース９６３は、ＩＥＥＥ８０２．１１ａ、１１ｂ、１１ｇ、１１ｎ、１１ａｃ及び１１ａｄなどの無線ＬＡＮ標準のうちの１つ以上をサポートし、近傍の端末へアクセスポイントとして無線接続を提供する。無線通信インタフェース９６３は、典型的には、ベースバンドプロセッサ、ＲＦ回路及びパワーアンプなどを含み得る。無線通信インタフェース９６３は、通信制御プログラムを記憶するメモリ、当該プログラムを実行するプロセッサ及び関連する回路を集積したワンチップのモジュールであってもよい。アンテナスイッチ９６４は、無線通信インタフェース９６３に含まれる複数の回路の間でアンテナ９６５の接続先を切り替える。アンテナ９６５は、単一の又は複数のアンテナ素子を有し、無線通信インタフェース９６３による無線信号の送信及び受信のために使用される。 The wireless communication interface 963 supports one or more of wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and provides a wireless connection as an access point to nearby terminals. The wireless communication interface 963 may typically include a baseband processor, an RF circuit, a power amplifier, and the like. The wireless communication interface 963 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated. The antenna switch 964 switches the connection destination of the antenna 965 among a plurality of circuits included in the wireless communication interface 963. The antenna 965 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 963.
　図１３に示した無線アクセスポイント９５０は、ＷＷＡＮ端末２００として動作し得る。この場合、例えば図６を参照して説明した無線通信部２１０、記憶部２２０、加入者識別モジュール２３０、及び制御部２４０は、無線通信インタフェース９６３において実装されてもよい。また、これら機能の少なくとも一部は、コントローラ９５１において実装されてもよい。 The wireless access point 950 shown in FIG. 13 can operate as the WWAN terminal 200. In this case, for example, the wireless communication unit 210, the storage unit 220, the subscriber identification module 230, and the control unit 240 described with reference to FIG. 6 may be implemented in the wireless communication interface 963. In addition, at least a part of these functions may be implemented in the controller 951.
　＜５．まとめ＞
　ここまで、図１～図１３を用いて、本開示に係る技術の実施形態を詳細に説明した。上述した実施形態によれば、ＷＷＡＮ３００に接続して無線通信を行うＷＷＡＮ端末２００との無線通信、及びＷＬＡＮ５００に接続して無線通信を行うＷＬＡＮ端末１００において、ＷＷＡＮ端末２００から受信されたポリシーに基づいて、接続するＷＬＡＮ５００が選択される。公衆ＷＬＡＮを利用するＷＬＡＮ端末１００自身が接続先を選択するので、例えば、接続先の候補が複数ある場合であっても、ＷＬＡＮ端末１００は、適切な接続先を容易に選択することができる。ＷＬＡＮ端末１００は、自身で加入者識別情報を有していなくても、加入者識別情報を有するＷＷＡＮ端末２００からポリシーを取得することが可能である。よって、ＷＬＡＮ端末１００は、例えば場所を移動して電波環境が変化した場合であっても、ポリシーを用いて公衆ＷＬＡＮを選択することができる。このように、ＷＬＡＮ端末１００は、ポリシーを用いた公衆ＷＬＡＮの選択が可能であるので、容易にインターネットに接続することが可能となる。 <5. Summary>
So far, the embodiments of the technology according to the present disclosure have been described in detail with reference to FIGS. 1 to 13. According to the above-described embodiment, based on the policy received from the WWAN terminal 200 in the wireless communication with the WWAN terminal 200 connected to the WWAN 300 and performing wireless communication, and the WLAN terminal 100 connected to the WLAN 500 and performing wireless communication. Thus, the WLAN 500 to be connected is selected. Since the WLAN terminal 100 itself using the public WLAN selects the connection destination, for example, even when there are a plurality of connection destination candidates, the WLAN terminal 100 can easily select an appropriate connection destination. The WLAN terminal 100 can acquire a policy from the WWAN terminal 200 having the subscriber identification information even if the WLAN terminal 100 does not have the subscriber identification information. Therefore, the WLAN terminal 100 can select a public WLAN using a policy even when the radio wave environment changes due to movement, for example. Thus, since the WLAN terminal 100 can select a public WLAN using a policy, it can easily connect to the Internet.
　また、ＷＬＡＮ端末１００は、ＷＷＡＮ端末２００がアクセスポイントとして動作するテザリングを利用中であっても、周囲のネットワークの探索を継続して行い、探索結果に応じて接続先をＷＬＡＮ５００に切り替えてもよい。これにより、ＷＷＡＮ端末２００による通信量を軽減することができるので、ＷＷＡＮ端末２００の消費電力が削減され、ＷＷＡＮ通信のトラフィックも軽減される。 Further, even when the WWAN terminal 200 is using tethering that operates as an access point, the WLAN terminal 100 may continuously search the surrounding network and switch the connection destination to the WLAN 500 according to the search result. . Thereby, since the communication amount by the WWAN terminal 200 can be reduced, the power consumption of the WWAN terminal 200 is reduced and the traffic of the WWAN communication is also reduced.
　また、上述した実施形態によれば、ＷＬＡＮ５００に接続して無線通信を行うＷＬＡＮ端末１００との無線通信、及びＷＷＡＮ３００に接続して無線通信を行うＷＷＡＮ端末２００において、ＷＷＡＮ３００を用いて取得したＷＬＡＮ５００のポリシーが、ＷＬＡＮ端末１００へ送信される。これにより、ＷＬＡＮ端末１００において、ポリシーを用いたＷＬＡＮ５００の選択が可能になる。また、ＷＷＡＮ端末２００は、ＷＬＡＮ端末１００によるＷＬＡＮ５００への接続結果に基づいて、送信するポリシーを修正する。これにより、ＷＬＡＮ端末１００は、より適切なＷＬＡＮ５００に容易に接続することが可能になる。 In addition, according to the above-described embodiment, the wireless communication with the WLAN terminal 100 that performs wireless communication by connecting to the WLAN 500 and the WWAN terminal 200 that performs wireless communication by connecting to the WWAN 300, the WLAN 500 acquired using the WWAN 300. The policy is transmitted to the WLAN terminal 100. As a result, the WLAN terminal 100 can select the WLAN 500 using the policy. In addition, the WWAN terminal 200 modifies the policy to be transmitted based on the connection result of the WLAN terminal 100 to the WLAN 500. Thereby, the WLAN terminal 100 can be easily connected to a more appropriate WLAN 500.
　以上、添付図面を参照しながら本開示の好適な実施形態について詳細に説明したが、本開示の技術的範囲はかかる例に限定されない。本開示の技術分野における通常の知識を有する者であれば、請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本開示の技術的範囲に属するものと了解される。 The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field of the present disclosure can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that it belongs to the technical scope of the present disclosure.
　なお、本明細書において説明した各装置による一連の処理は、ソフトウェア、ハードウェア、及びソフトウェアとハードウェアとの組合せのいずれを用いて実現されてもよい。ソフトウェアを構成するプログラムは、例えば、各装置の内部又は外部に設けられる記憶媒体（非一時的な媒体：non-transitory　media）に予め格納される。そして、各プログラムは、例えば、コンピュータによる実行時にＲＡＭに読み込まれ、ＣＰＵなどのプロセッサにより実行される。 Note that a series of processing by each device described in this specification may be realized using any of software, hardware, and a combination of software and hardware. For example, the program constituting the software is stored in advance in a storage medium (non-transitory medium) provided inside or outside each device. Each program is read into a RAM when executed by a computer and executed by a processor such as a CPU.
　また、本明細書においてフローチャート及びシーケンス図を用いて説明した処理は、必ずしも図示された順序で実行されなくてもよい。いくつかの処理ステップは、並列的に実行されてもよい。また、追加的な処理ステップが採用されてもよく、一部の処理ステップが省略されてもよい。 In addition, the processes described using the flowcharts and sequence diagrams in this specification do not necessarily have to be executed in the order shown. Some processing steps may be performed in parallel. Further, additional processing steps may be employed, and some processing steps may be omitted.
　また、本明細書に記載された効果は、あくまで説明的または例示的なものであって限定的ではない。つまり、本開示に係る技術は、上記の効果とともに、または上記の効果に代えて、本明細書の記載から当業者には明らかな他の効果を奏しうる。 In addition, the effects described in this specification are merely illustrative or illustrative, and are not limited. That is, the technology according to the present disclosure can exhibit other effects that are apparent to those skilled in the art from the description of the present specification in addition to or instead of the above effects.
　なお、以下のような構成も本開示の技術的範囲に属する。
（１）
　第１のネットワークに接続して無線通信を行う無線端末との無線通信を行う第１の無線通信部と、
　第２のネットワークに接続して無線通信を行う第２の無線通信部と、
　前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択する制御部と、
を備える無線通信装置。
（２）
　前記ポリシーは、ネットワークの優先順位及びネットワークを識別するためのアクセスＩＤを含む、前記（１）に記載の無線通信装置。
（３）
　前記制御部は、前記ポリシーに含まれる前記優先順位に従って接続する前記第２のネットワークを選択する、前記（２）に記載の無線通信装置。
（４）
　前記制御部は、前記第２の無線通信部における受信電波強度にさらに基づいて接続する前記第２のネットワークを選択する、前記（１）～（３）のいずれか一項に記載の無線通信装置。
（５）
　前記制御部は、前記第２の無線通信部により探索された周囲のネットワークの中から、接続する前記第２のネットワークを前記ポリシーに基づいて選択する、前記（１）～（４）のいずれか一項に記載の無線通信装置。
（６）
　前記制御部は、前記ポリシーに基づいて選択した前記第２のネットワークを対象として、周囲のネットワークを探索するよう前記第２の無線通信部を制御する、前記（１）～（４）のいずれか一項に記載の無線通信装置。
（７）
　前記制御部は、アクセスポイントとして動作する前記無線端末に接続後に前記探索を継続して行い、探索結果に応じて接続先を前記第２のネットワークに切り替える、前記（５）又は（６）に記載の無線通信装置。
（８）
　前記制御部は、前記第２のネットワークに接続後に前記探索を継続して行い、探索結果に応じて接続する前記第２のネットワークを切り替える、前記（５）～（７）のいずれか一項に記載の無線通信装置。
（９）
　前記制御部は、前記ポリシーの送信を要求するリクエストを前記無線端末へ送信するよう前記第１の無線通信部を制御する、前記（１）～（８）のいずれか一項に記載の無線通信装置。
（１０）
　前記制御部は、前記無線端末が有する加入者識別情報を用いたＥＡＰ（Extensible　Authentication　Protocol）認証により、前記第２のネットワークへの認証を行う、前記（１）～（９）のいずれか一項に記載の無線通信装置。
（１１）
　前記第１の無線通信部と前記第２の無線通信部は同一の通信方式を用いて無線通信を行う、前記（１）～（１０）のいずれか一項に記載の無線通信装置。
（１２）
　前記第２の無線通信部は、無線ＬＡＮ（Local　Area　Network）を用いて無線通信を行う、前記（１）～（１１）のいずれか一項に記載の無線通信装置。
（１３）
　前記第１の無線通信部は、近距離無線通信方式又は無線ＬＡＮを用いて無線通信を行う、前記（１）～（１２）のいずれか一項に記載の無線通信装置。
（１４）
　前記第１のネットワークは、移動体通信網である、前記（１）～（１３）のいずれか一項に記載の無線通信装置。
（１５）
　前記第２のネットワークは、公衆無線ＬＡＮである、前記（１）～（１４）のいずれか一項に記載の無線通信装置。
（１６）
　第１のネットワークに接続して無線通信を行う第１の無線通信部と、
　第２のネットワークに接続して無線通信を行う無線端末との無線通信を行う第２の無線通信部と、
　前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御する制御部と、
を備える無線通信装置。
（１７）
　前記制御部は、前記第２の無線通信部により前記無線端末から受信されたリクエストに応じて、前記第２のネットワークのポリシーを取得するよう前記第１の無線通信部を制御する、前記（１６）に記載の無線通信装置。
（１８）
　前記制御部は、前記無線端末の前記第２のネットワークへの接続結果に基づいて前記ポリシーを修正する、前記（１６）又は（１７）に記載の無線通信装置。
（１９）
　第１のネットワークに接続して無線通信を行う無線端末との無線通信を第１の無線通信部により行うことと、
　第２の無線通信部により第２のネットワークに接続して無線通信を行うことと、
　前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択することと、
を含む無線通信方法。
（２０）
　第１の無線通信部により第１のネットワークに接続して無線通信を行うことと、
　第２のネットワークに接続して無線通信を行う無線端末との無線通信を第２の無線通信部により行うことと、
　前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御することと、
を含む無線通信方法。 The following configurations also belong to the technical scope of the present disclosure.
(1)
A first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network;
A second wireless communication unit connected to the second network for wireless communication;
A control unit that selects the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit;
A wireless communication device comprising:
(2)
The wireless communication apparatus according to (1), wherein the policy includes a network priority and an access ID for identifying the network.
(3)
The wireless communication apparatus according to (2), wherein the control unit selects the second network to be connected in accordance with the priority order included in the policy.
(4)
The wireless communication device according to any one of (1) to (3), wherein the control unit selects the second network to be connected based further on a received radio wave intensity in the second wireless communication unit. .
(5)
The control unit selects the second network to be connected from the surrounding networks searched by the second wireless communication unit based on the policy, any one of (1) to (4) The wireless communication device according to one item.
(6)
The control unit controls the second wireless communication unit to search for a surrounding network for the second network selected based on the policy, any one of (1) to (4) The wireless communication device according to one item.
(7)
The control unit according to (5) or (6), wherein the control unit continuously performs the search after connecting to the wireless terminal operating as an access point, and switches the connection destination to the second network according to a search result. Wireless communication device.
(8)
The control unit continuously performs the search after connecting to the second network, and switches the second network to be connected according to a search result, according to any one of (5) to (7) The wireless communication device described.
(9)
The wireless communication according to any one of (1) to (8), wherein the control unit controls the first wireless communication unit to transmit a request requesting transmission of the policy to the wireless terminal. apparatus.
(10)
The control unit performs authentication to the second network by EAP (Extensible Authentication Protocol) authentication using subscriber identification information possessed by the wireless terminal, and any one of (1) to (9) A wireless communication device according to 1.
(11)
The wireless communication apparatus according to any one of (1) to (10), wherein the first wireless communication unit and the second wireless communication unit perform wireless communication using the same communication method.
(12)
The wireless communication device according to any one of (1) to (11), wherein the second wireless communication unit performs wireless communication using a wireless local area network (LAN).
(13)
The wireless communication device according to any one of (1) to (12), wherein the first wireless communication unit performs wireless communication using a short-range wireless communication method or a wireless LAN.
(14)
The wireless communication device according to any one of (1) to (13), wherein the first network is a mobile communication network.
(15)
The wireless communication apparatus according to any one of (1) to (14), wherein the second network is a public wireless LAN.
(16)
A first wireless communication unit that performs wireless communication by connecting to the first network;
A second wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the second network;
A control unit that controls the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal;
A wireless communication device comprising:
(17)
The control unit controls the first wireless communication unit to acquire the policy of the second network in response to a request received from the wireless terminal by the second wireless communication unit, (16 ) Wireless communication device.
(18)
The wireless communication apparatus according to (16) or (17), wherein the control unit corrects the policy based on a connection result of the wireless terminal to the second network.
(19)
Performing wireless communication with a wireless terminal connected to the first network and performing wireless communication by the first wireless communication unit;
Connecting to the second network by the second wireless communication unit to perform wireless communication;
Selecting the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit;
A wireless communication method including:
(20)
Connecting to the first network by the first wireless communication unit to perform wireless communication;
Performing wireless communication with a wireless terminal that performs wireless communication by connecting to the second network by the second wireless communication unit;
Controlling the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal;
A wireless communication method including:
　１　　　無線通信システム
　１００　ＷＬＡＮ端末
　１１０　　無線通信部
　１１２　　ＷＬＡＮモジュール
　１１４　　ＢＴモジュール
　１１６　　ＮＦＣモジュール
　１２０　　記憶部
　１３０　　制御部
　２００　ＷＷＡＮ端末
　２１０　　無線通信部
　２１２　　ＷＷＡＮモジュール
　２１４　　ＷＬＡＮモジュール
　２１６　　ＢＴモジュール
　２１８　　ＮＦＣモジュール
　２２０　　記憶部
　２３０　　加入者識別モジュール
　２４０　　制御部
　３００　ＷＷＡＮ
　３１０　　基地局
　３２０　　ゲートウェイ
　３３０　　加入者情報サーバ
　３４０　　認証サーバ
　３５０　　ネットワーク情報提供サーバ
　４００　サービスネットワーク
　５００　ＷＬＡＮ
　５１０　基地局 DESCRIPTION OF SYMBOLS 1 Wireless communication system 100 WLAN terminal 110 Wireless communication part 112 WLAN module 114 BT module 116 NFC module 120 Storage part 130 Control part 200 WWAN terminal 210 Wireless communication part 212 WWAN module 214 WLAN module 216 BT module 218 NFC module 220 Storage part 230 Subscription Identification module 240 Control unit 300 WWAN
310 base station 320 gateway 330 subscriber information server 340 authentication server 350 network information providing server 400 service network 500 WLAN
510 base station

Claims (20)

  1. 　第１のネットワークに接続して無線通信を行う無線端末との無線通信を行う第１の無線通信部と、
    　第２のネットワークに接続して無線通信を行う第２の無線通信部と、
    　前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択する制御部と、
    を備える無線通信装置。     A first wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the first network;
    A second wireless communication unit connected to the second network for wireless communication;
    A control unit that selects the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit;
    A wireless communication device comprising:
  2. 　前記ポリシーは、ネットワークの優先順位及びネットワークを識別するためのアクセスＩＤを含む、請求項１に記載の無線通信装置。 The wireless communication apparatus according to claim 1, wherein the policy includes a network priority and an access ID for identifying the network.
  3. 　前記制御部は、前記ポリシーに含まれる前記優先順位に従って接続する前記第２のネットワークを選択する、請求項２に記載の無線通信装置。 The wireless communication device according to claim 2, wherein the control unit selects the second network to be connected according to the priority order included in the policy.
  4. 　前記制御部は、前記第２の無線通信部における受信電波強度にさらに基づいて接続する前記第２のネットワークを選択する、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the control unit selects the second network to be connected based on the received radio wave intensity in the second wireless communication unit.
  5. 　前記制御部は、前記第２の無線通信部により探索された周囲のネットワークの中から、接続する前記第２のネットワークを前記ポリシーに基づいて選択する、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the control unit selects the second network to be connected from surrounding networks searched by the second wireless communication unit based on the policy.
  6. 　前記制御部は、前記ポリシーに基づいて選択した前記第２のネットワークを対象として、周囲のネットワークを探索するよう前記第２の無線通信部を制御する、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the control unit controls the second wireless communication unit to search for a surrounding network for the second network selected based on the policy.
  7. 　前記制御部は、アクセスポイントとして動作する前記無線端末に接続後に前記探索を継続して行い、探索結果に応じて接続先を前記第２のネットワークに切り替える、請求項５に記載の無線通信装置。 The wireless communication device according to claim 5, wherein the control unit continuously performs the search after connecting to the wireless terminal operating as an access point, and switches a connection destination to the second network according to a search result.
  8. 　前記制御部は、前記第２のネットワークに接続後に前記探索を継続して行い、探索結果に応じて接続する前記第２のネットワークを切り替える、請求項５に記載の無線通信装置。 The wireless communication device according to claim 5, wherein the control unit continuously performs the search after connecting to the second network, and switches the second network to be connected according to a search result.
  9. 　前記制御部は、前記ポリシーの送信を要求するリクエストを前記無線端末へ送信するよう前記第１の無線通信部を制御する、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the control unit controls the first wireless communication unit to transmit a request for requesting transmission of the policy to the wireless terminal.
  10. 　前記制御部は、前記無線端末が有する加入者識別情報を用いたＥＡＰ（Extensible　Authentication　Protocol）認証により、前記第２のネットワークへの認証を行う、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the control unit performs authentication to the second network by EAP (Extensible Authentication Protocol) authentication using subscriber identification information included in the wireless terminal.
  11. 　前記第１の無線通信部と前記第２の無線通信部は同一の通信方式を用いて無線通信を行う、請求項１に記載の無線通信装置。 The wireless communication apparatus according to claim 1, wherein the first wireless communication unit and the second wireless communication unit perform wireless communication using the same communication method.
  12. 　前記第２の無線通信部は、無線ＬＡＮ（Local　Area　Network）を用いて無線通信を行う、請求項１に記載の無線通信装置。 The wireless communication apparatus according to claim 1, wherein the second wireless communication unit performs wireless communication using a wireless LAN (Local Area Network).
  13. 　前記第１の無線通信部は、近距離無線通信方式又は無線ＬＡＮを用いて無線通信を行う、請求項１に記載の無線通信装置。 The wireless communication apparatus according to claim 1, wherein the first wireless communication unit performs wireless communication using a short-range wireless communication system or a wireless LAN.
  14. 　前記第１のネットワークは、移動体通信網である、請求項１に記載の無線通信装置。 The wireless communication device according to claim 1, wherein the first network is a mobile communication network.
  15. 　前記第２のネットワークは、公衆無線ＬＡＮである、請求項１に記載の無線通信装置。 The wireless communication apparatus according to claim 1, wherein the second network is a public wireless LAN.
  16. 　第１のネットワークに接続して無線通信を行う第１の無線通信部と、
    　第２のネットワークに接続して無線通信を行う無線端末との無線通信を行う第２の無線通信部と、
    　前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御する制御部と、
    を備える無線通信装置。     A first wireless communication unit that performs wireless communication by connecting to the first network;
    A second wireless communication unit that performs wireless communication with a wireless terminal that performs wireless communication by connecting to the second network;
    A control unit that controls the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal;
    A wireless communication device comprising:
  17. 　前記制御部は、前記第２の無線通信部により前記無線端末から受信されたリクエストに応じて、前記第２のネットワークのポリシーを取得するよう前記第１の無線通信部を制御する、請求項１６に記載の無線通信装置。 The control unit controls the first wireless communication unit to acquire a policy of the second network in response to a request received from the wireless terminal by the second wireless communication unit. A wireless communication device according to 1.
  18. 　前記制御部は、前記無線端末の前記第２のネットワークへの接続結果に基づいて前記ポリシーを修正する、請求項１６に記載の無線通信装置。 The wireless communication device according to claim 16, wherein the control unit corrects the policy based on a connection result of the wireless terminal to the second network.
  19. 　第１のネットワークに接続して無線通信を行う無線端末との無線通信を第１の無線通信部により行うことと、
    　第２の無線通信部により第２のネットワークに接続して無線通信を行うことと、
    　前記第１の無線通信部により前記無線端末から受信された前記第２のネットワークのポリシーに基づいて、前記第２の無線通信部により接続する前記第２のネットワークを選択することと、
    を含む無線通信方法。     Performing wireless communication with a wireless terminal connected to the first network and performing wireless communication by the first wireless communication unit;
    Connecting to the second network by the second wireless communication unit to perform wireless communication;
    Selecting the second network to be connected by the second wireless communication unit based on the policy of the second network received from the wireless terminal by the first wireless communication unit;
    A wireless communication method including:
  20. 　第１の無線通信部により第１のネットワークに接続して無線通信を行うことと、
    　第２のネットワークに接続して無線通信を行う無線端末との無線通信を第２の無線通信部により行うことと、
    　前記第１の無線通信部により前記第１のネットワークを介して受信された前記第２のネットワークのポリシーを、前記無線端末へ送信するよう前記第２の無線通信部を制御することと、
    を含む無線通信方法。     Connecting to the first network by the first wireless communication unit to perform wireless communication;
    Performing wireless communication with a wireless terminal that performs wireless communication by connecting to the second network by the second wireless communication unit;
    Controlling the second wireless communication unit to transmit the policy of the second network received by the first wireless communication unit via the first network to the wireless terminal;
    A wireless communication method including:
PCT/JP2015/065595 2014-08-22 2015-05-29 Wireless communication device and wireless communication method WO2016027545A1 (en)

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JP2013537775A (en) * 2010-11-10 2013-10-03 エスケーテレコム株式会社 Policy providing device and terminal device for supporting method for changing connection between different types of networks
JP2014518044A (en) * 2011-05-27 2014-07-24 華為技術有限公司 Data stream transmission method and related equipment and system
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