WO2009125813A1 - 同報情報通知方法、移動局及び認証機関システム - Google Patents
同報情報通知方法、移動局及び認証機関システム Download PDFInfo
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- WO2009125813A1 WO2009125813A1 PCT/JP2009/057253 JP2009057253W WO2009125813A1 WO 2009125813 A1 WO2009125813 A1 WO 2009125813A1 JP 2009057253 W JP2009057253 W JP 2009057253W WO 2009125813 A1 WO2009125813 A1 WO 2009125813A1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
- G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/107—Network architectures or network communication protocols for network security for controlling access to devices or network resources wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/069—Authentication using certificates or pre-shared keys
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
- H04W12/104—Location integrity, e.g. secure geotagging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
- H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
- H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
- H04W12/122—Counter-measures against attacks; Protection against rogue devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Definitions
- the present invention relates to a broadcast information notification method, a mobile station, and a certification authority system that notify broadcast information to a mobile station.
- EWS Earthquake and Tsunami Warning System
- the certification authority system 2 gives an electronic signature to emergency information (Primary Notification) received from the emergency information provider system 1 and then CBS (Cell Broadcast Service). A message or the like is used to notify a cell corresponding to an earthquake occurrence area.
- emergency information Primary Notification
- CBS Cell Broadcast Service
- the present invention has been made in view of the above-described problems, and an object thereof is to provide a broadcast information notification method, a mobile station, and a certification authority system that can prevent “Forwarding Attack”.
- a first feature of the present invention is a broadcast information notification method for notifying each of a plurality of mobile stations of broadcast information, wherein each of the plurality of mobile stations acquires position information of the mobile station.
- a process A for managing information on the acquired location information; a process B for notifying each of the plurality of mobile stations of broadcast information to which an electronic signature is attached; and the plurality of mobile stations.
- Each of the plurality of mobile stations verifying the broadcast information using the electronic book name given to the received broadcast information, and when each of the plurality of mobile stations succeeds in the verification, Step D for comparing the position information included in the broadcast information with the managed position information, and each of the plurality of mobile stations performs processing corresponding to the broadcast information based on the comparison result.
- the gist is to have the step E to be performed.
- each of the plurality of mobile stations manages first time information indicating a time when the location information of the mobile station is acquired.
- Each of the mobile stations compares the managed first time information with the second time information included in the broadcast information.
- each of the plurality of mobile stations Processing corresponding to the broadcast information may be performed based on the comparison result of the information and the time information.
- the location information included in the broadcast information includes a plurality of area identification information
- each of the plurality of mobile stations has the location information managed by the location information.
- the process corresponding to the broadcast information may be performed when it matches at least one of the area identification information included in the position information included in the broadcast information.
- the plurality of area identification information may be information for identifying a peripheral area of an area where the content of the broadcast information is valid.
- the mobile station receives and manages security information corresponding to location information from the network, and in the step C, each of the plurality of mobile stations May verify the broadcast information using the security information and the electronic book name given to the broadcast information.
- each of the plurality of mobile stations compares the time information, and as a result, the second time information is current time information managed by the mobile station. If it is determined that it is within the predetermined window time, processing corresponding to the broadcast information may be performed.
- the second time information indicates a newer time than the first time information. If it is determined, processing corresponding to the broadcast information may be performed.
- a second feature of the present invention is a mobile station configured to perform processing corresponding to broadcast information, and acquires position information of the mobile station and manages information related to the acquired position information.
- a management unit configured as described above
- a verification unit configured to verify the broadcast information using the electronic book name given to the received broadcast information, and when the verification is successful
- the position information included in the broadcast information is compared with the managed position information, and the processing corresponding to the broadcast information is performed based on the comparison result.
- a processing unit configured as described above.
- the management unit is configured to manage first time information indicating a time at which the location information of the mobile station is acquired, and the comparison unit is managing the The first time information and the second time information included in the broadcast information are compared, and the processing unit is configured to compare the position information and the time information based on a comparison result. You may be comprised so that the process corresponding to report information may be performed.
- the position information included in the broadcast information includes a plurality of area identification information
- the processing unit is configured to include the position information managed by the position information included in the broadcast information.
- the processing unit may be configured to perform processing corresponding to the broadcast information.
- the plurality of area identification information may be information for identifying a peripheral area of an area where the content of the broadcast information is valid.
- the management unit receives and manages security information corresponding to location information from a network, and the verification unit is attached to the security information and the broadcast information.
- the broadcast information may be verified using the electronic book name.
- the processing unit determines that the second time information is within a predetermined window time of current time information managed by the mobile station. In such a case, it may be configured to perform processing corresponding to the broadcast information.
- the processing unit determines that the second time information indicates a newer time than the first time information as a result of comparison of the time information
- the broadcast information It may be configured to perform processing corresponding to.
- a third feature of the present invention is a certification authority system configured to notify broadcast information to a mobile station in a mobile communication system, the broadcast information received from the broadcast information provider system. Is converted into area identification information in the mobile communication system, and area identification information for identifying a peripheral area of the area identified by the area identification information is added as position information in the broadcast information.
- the gist of the present invention is to provide an emergency information transmission unit configured to give an electronic signature corresponding to the broadcast information to the broadcast information and notify the mobile station.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of emergency information transmitted in the mobile communication system according to the first embodiment of the present invention.
- FIG. 4 is a diagram for explaining the operation of the verification unit in the mobile station according to the first embodiment of the present invention.
- FIG. 5 is a functional block diagram of the certification authority system according to the first embodiment of the present invention.
- FIG. 6 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
- FIG. 7 is a flowchart showing an operation of the mobile station according to the second embodiment of the present invention.
- “ETWS” is applied to the emergency information (Primary Notification) received from the emergency information provider (Notification Provider) system 1 by the certification authority (Signing Authority) system 2.
- the cell corresponding to the occurrence area of the earthquake etc. via the core network device CN, the radio control station RNC, the radio base station BTS, etc. using a CBS (Cell Broadcast Service) message etc. For example, it is configured to notify the cells # 1 to # 4).
- CBS Cell Broadcast Service
- the mobile communication system includes an emergency information provider system 1, an authentication authority system 2, a core network device CN, a radio control station RNC, and a radio base station.
- BTS broadcast transmission control protocol
- the mobile station UE includes an acquisition unit 11, a storage unit 12, an emergency information reception unit 13, a verification unit 14, a comparison unit 15, and a processing unit 16. is doing.
- the acquisition unit 11 is configured to acquire position information of the mobile station UE at a predetermined timing.
- the acquisition unit 11 acquires the cell ID of the cell where the mobile station UE is located, the location registration area ID of the mobile station UE, and GPS information (latitude / longitude information) as the location information of the mobile station UE. It may be configured.
- the storage unit 12 is configured to manage the location information of the mobile station UE acquired by the acquisition unit 11.
- the storage unit 12 is configured to manage not only the current location information of the mobile station UE acquired by the acquisition unit 11 but also the location information of the mobile station UE acquired by the acquisition unit 11 before a predetermined time. May be.
- the storage unit 12 is configured to manage first time information indicating the time when the acquisition unit 11 acquires the location information of the mobile station UE.
- the storage unit 12 includes not only the first time information indicating the time when the current position information of the mobile station UE is acquired, but also information indicating the time when the position information of the mobile station UE acquired before a predetermined time is acquired. It may be configured to manage.
- the storage unit 12 may be configured to receive and manage security information (for example, Shared Secret or the public key of the certification authority system 2) corresponding to the position information from the network.
- security information for example, Shared Secret or the public key of the certification authority system 2
- a different value may be used for Shared Secret for each piece of position information.
- the emergency information receiving unit 13 is configured to receive emergency information (broadcast information) notified by the certification authority system 2.
- the emergency information reception unit 13 is configured to receive emergency information (Primary Notification) included in a CBS message, a Paging message, or the like.
- emergency information Primary Notification
- the emergency information includes “protocol version (Protocol Version)”, “disaster type (Disaster Type)”, “second time information (Timestamp)” described later, and “authentication”.
- “Institution system (certification authority) identifier (Signing Authority)” and “location information (Location)” are included.
- the emergency information includes an electronic device corresponding to the emergency information. The signature is given. Such an electronic signature is generated by the certification authority system 2 using the private key of the certification authority system 2.
- emergency information notified in ETWS is assumed as broadcast information, but other broadcast information may be used.
- the verification unit 14 is configured to verify the emergency information using an electronic book name (Signature) given to the emergency information received by the emergency information receiving unit 13.
- Signature electronic book name
- the verification unit 14 may be configured to verify the emergency information described above using the security information managed by the storage unit 12.
- the verification unit 14 may be configured to perform verification on the emergency information described above by the method illustrated in FIG.
- the verification unit 14 has an electronic signature attached to security information (public key of the certification authority system 2) managed by the storage unit 12 and the emergency information (Primary Notification) acquired by the acquisition unit 11. Into the authentication function to obtain output 1.
- the verification unit 14 puts the emergency information (Primary Notification) acquired by the acquisition unit 11 into a hash function, and obtains an output 2.
- the verification unit 14 determines whether or not the output 1 and the output 2 match, and determines that the emergency information has been successfully verified if they match.
- the verification unit 14 verifies the emergency information when the security information (Shared Secret) managed by the storage unit 12 matches the Shared Secret included in the emergency information (Primary Notification). May be determined to be successful.
- the comparison unit 15 includes location information (Location) included in the emergency information received by the emergency information reception unit 13 and location information of the mobile station UE managed by the storage unit 12. And is configured to compare.
- the comparison unit 15 sets the location information of the mobile station UE managed by the storage unit 12 to at least one of the area identification information included in the location information included in the emergency information received by the emergency information reception unit 13. It may be configured to determine whether or not they match.
- the area identification information included in the position information included in the emergency information may be information for identifying a peripheral area of an area where the content of the emergency information is valid.
- the comparison unit 15 is configured to compare the first time information managed by the storage unit 12 and the second time information (Time) included in the emergency information received by the emergency information reception unit 13. ing.
- the comparison unit 15 is specified by the time specified by the first time information managed by the storage unit 12 or the second time information included in the position information included in the emergency information received by the emergency information reception unit 13. It may be configured to determine which of the displayed times indicates an old time (or a new time).
- the processing unit 16 is configured to perform processing corresponding to the emergency information received by the emergency information receiving unit 13 based on the comparison result of the position information and time information by the comparison unit 15.
- the processing unit 16 includes a plurality of areas in which the current location information of the mobile station UE managed by the storage unit 12 is included in the location information included in the emergency information received by the emergency information reception unit 13.
- identification information cell ID, location registration area ID, latitude / longitude information, etc.
- processing corresponding to the emergency information buzzzer output, alarm output, display display, etc.
- the processing unit 16 also includes the second time included in the position information included in the emergency information received by the emergency information receiving unit 13, the time specified by the first time information managed by the storage unit 12. When the time is earlier than the time specified by the information, processing corresponding to the emergency information (buzzer output, alarm output, display display, etc.) is performed.
- the processing unit 16 is configured to perform processing corresponding to the emergency information when it is determined that the second time information indicates a newer time than the first time information. May be.
- the processing unit 16 determines that the second time information is within the predetermined window time of the current time information managed by the mobile station UE as a result of comparing the time information, the processing unit 16 responds to the emergency information. You may be comprised so that the process to perform may be performed.
- the certification authority system 2 includes a primary notification receiving unit 21, a location information management unit 22, an emergency information transmission unit 23, and an electronic book name creation unit 24. .
- the Primary Notification receiving unit 21 is configured to receive emergency information (Primary Notification) from the emergency information provider system 1.
- the location information management unit 22 is configured to manage area identification information for identifying a peripheral area of each area identified by area identification information in the mobile communication system.
- the electronic signature creation unit 24 creates an electronic signature based on emergency information (Primary Notification), area identification information of each area managed by the location information management unit 22, and a time stamp for creating the electronic signature. It is configured.
- emergency information Primary Notification
- area identification information of each area managed by the location information management unit 22 and a time stamp for creating the electronic signature. It is configured.
- the emergency information transmitting unit 23 uses the location information included in the emergency information (Primary Notification) received by the Primary Notification receiving unit 21 as area identification information (for example, cell ID, location registration area ID, latitude / longitude information) in the mobile communication system. ).
- area identification information for example, cell ID, location registration area ID, latitude / longitude information
- the emergency information transmission unit 23 adds area identification information (for example, cell ID, location registration area ID, latitude / longitude information) identifying the peripheral area of the area identified by the converted area identification information to the emergency information. Is configured to do.
- area identification information for example, cell ID, location registration area ID, latitude / longitude information
- the emergency information transmitting unit 23 is configured to give an electronic signature corresponding to the emergency information to the emergency information and notify the mobile station UE.
- the network device (radio base station BTS, radio control station RNC, core network device CN, GPS system, etc.) 3 receives the location information of the mobile station UE from the mobile station UE. Send.
- step S1002 the mobile station UE acquires location information of the mobile station UE and manages information related to the location information.
- step S1010 the emergency information provider system (broadcast information provider system) 1 notifies the certification authority system 2 of emergency information (Primary Notification).
- step S1011 the emergency information provider system 1 uses the location information included in the received emergency information (Primary Notification) as area identification information in the mobile communication system (for example, cell ID, location registration area ID, latitude / longitude information). Convert to
- the emergency information provider system 1 uses area identification information (for example, cell ID, location registration area ID, latitude / longitude information) for identifying the peripheral area of the area identified by the converted area identification information as emergency information. to add.
- area identification information for example, cell ID, location registration area ID, latitude / longitude information
- the emergency information provider system 1 gives an electronic signature to the emergency information and notifies the mobile station UE via the network device 3.
- step S1014 the mobile station UE that has received the emergency information performs the operation shown in FIG.
- step S101 the mobile station UE verifies the emergency information using the electronic book name (Signature) given to the received emergency information.
- Signature electronic book name
- the mobile station UE does not perform processing corresponding to the emergency information.
- step S102 the mobile station UE compares the location information (Location) included in the received emergency information with the location information of the managed mobile station UE.
- the mobile station UE determines whether or not the location information of the managed mobile station UE matches at least one of the area identification information included in the location information included in the received emergency information.
- the mobile station UE does not perform processing corresponding to the emergency information.
- step S103 the mobile station UE compares the managed first time information with the second time information (Time) included in the received emergency information.
- the mobile station UE determines which one of the time specified by the managed first time information or the time specified by the second time information included in the position information included in the received emergency information is the oldest time (or , A new time) is determined.
- the mobile station UE When it is determined that the first time information indicates a newer time, the mobile station UE does not perform processing corresponding to the emergency information.
- step S104 the mobile station UE performs processing corresponding to the emergency information.
- the first time information managed by the mobile station UE is older than the second time information included in the emergency information that has been successfully verified. Only when the mobile station UE performs processing corresponding to the emergency information, that is, a malicious third party moves in an area where an earthquake etc. has not occurred after an earthquake etc. Even when the current location information of the fake mobile station UE is transmitted to the station UE, the mobile station UE responds to emergency information in another area transferred by a malicious third party. Therefore, “Forwarding Attack” can be prevented more firmly.
- the W-CDMA mobile communication system has been described as an example.
- the present invention is not limited to such a mobile communication system.
- the LTE (Long Term Evolution) system is used.
- the present invention can also be applied to other mobile communication systems.
- the function of the radio base station NodeB and the function of the radio control station RNC are installed in the radio base station eNB or the switching center MME.
- the operations of the mobile station UE, the radio base station NodeB (eNB), the exchange MME, and the radio control station RNC described above may be implemented by hardware or may be implemented by a software module executed by a processor. However, it may be implemented by a combination of both.
- Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
- the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE, the radio base station NodeB (eNB), the exchange MME, or the radio control station RNC. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE, the radio base station NodeB (eNB), the exchange MME, or the radio control station RNC.
Abstract
Description
図1乃至図3を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図4及び図5を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、移動局UEによって管理されている移動局UEの位置情報と、検証に成功した緊急情報に含まれる位置情報とが一致する場合にのみ、移動局UEが、かかる緊急情報に対応する処理を行う、すなわち、地震等が発生していないエリアに在圏する移動局UEが、悪意の第三者によって転送された別のエリアにおける緊急情報に対応する処理を行わないため、「Forwarding Attack」を防ぐことができる。
上述の実施形態では、W-CDMA方式の移動通信システムを例に挙げて説明されているが、本発明は、かかる移動通信システムに限定されるものではなく、例えば、LTE(Long Term Evolution)方式の移動通信システムにも適用可能である。
Claims (15)
- 複数の移動局の各々に対して同報情報を通知する同報情報通知方法であって、
前記複数の移動局の各々が、該移動局の位置情報を取得して、取得した該位置情報に関する情報を管理する工程Aと、
前記複数の移動局の各々に対して、電子署名が付与されている同報情報を通知する工程Bと、
前記複数の移動局の各々が、受信した前記同報情報に付与されている電子書名を用いて該同報情報についての検証を行う工程Cと、
前記複数の移動局の各々が、前記検証に成功した場合、前記同報情報に含まれる位置情報と、管理している前記位置情報とを比較する工程Dと、
前記複数の移動局の各々が、前記比較結果に基づいて、前記同報情報に対応する処理を行う工程Eとを有することを特徴とする同報情報通知方法。 - 前記工程Aにおいて、前記複数の移動局の各々は、前記移動局の位置情報を取得した時刻を示す第1時刻情報を管理し、
前記工程Dにおいて、前記複数の移動局の各々は、管理している前記第1時刻情報と、前記同報情報に含まれる第2時刻情報とを比較し、
前記工程Eにおいて、前記複数の移動局の各々は、前記位置情報及び前記時刻情報についての比較結果に基づいて、前記同報情報に対応する処理を行うことを特徴とする請求項1に記載の同報情報通知方法。 - 前記同報情報に含まれる位置情報は、複数のエリア識別情報を含み、
前記工程Eにおいて、前記複数の移動局の各々は、管理している前記位置情報が、前記同報情報に含まれる位置情報に含まれるエリア識別情報の少なくとも1つに一致する場合に、該同報情報に対応する処理を行うことを特徴とする請求項1に記載の同報情報通知方法。 - 前記複数のエリア識別情報は、前記同報情報の内容が有効なエリアの周辺エリアを識別する情報であることを特徴とする請求項3に記載の同報情報通知方法。
- 前記工程Aにおいて、前記移動局は、ネットワークから、位置情報に対応したセキュリティ情報を受信して管理しており、
前記工程Cにおいて、前記複数の移動局の各々は、前記セキュリティ情報及び前記同報情報に付与されている電子書名を用いて、該同報情報についての検証を行うことを特徴とする請求項1に記載の同報情報通知方法。 - 前記工程Eにおいて、前記複数の移動局の各々は、前記時刻情報について比較した結果、前記第2時刻情報が、該移動局によって管理されている現在の時刻情報の所定ウィンドタイム以内にあると判断した場合に、前記同報情報に対応する処理を行うことを特徴とする請求項1に記載の同報情報通知方法。
- 前記工程Eにおいて、前記複数の移動局の各々は、前記時刻情報について比較した結果、前記第2時刻情報が、前記第1時刻情報よりも新しい時刻を示すと判断した場合に、前記同報情報に対応する処理を行うことを特徴とする請求項1に記載の同報情報通知方法。
- 同報情報に対応する処理を行うように構成されている移動局であって、
前記移動局の位置情報を取得して、取得した位置情報に関する情報を管理するように構成されている管理部と、
受信した同報情報に付与されている電子書名を用いて該同報情報についての検証を行うように構成されている検証部と、
前記検証に成功した場合、前記同報情報に含まれる位置情報と、管理している前記位置情報とを比較するように構成されている比較部と、
前記比較結果に基づいて、前記同報情報に対応する処理を行うように構成されている処理部とを具備することを特徴とする移動局。 - 前記管理部は、前記移動局の位置情報を取得した時刻を示す第1時刻情報を管理するように構成されており、
前記比較部は、管理している前記第1時刻情報と、前記同報情報に含まれる第2時刻情報とを比較するように構成されており、
前記処理部は、前記位置情報及び前記時刻情報についての比較結果に基づいて、前記同報情報に対応する処理を行うように構成されていることを特徴とする請求項8に記載の移動局。 - 前記同報情報に含まれる位置情報は、複数のエリア識別情報を含み、
前記処理部は、管理している前記位置情報が、前記同報情報に含まれる位置情報に含まれるエリア識別情報の少なくとも1つに一致する場合に、該同報情報に対応する処理を行うように構成されていることを特徴とする請求項8に記載の移動局。 - 前記複数のエリア識別情報は、前記同報情報の内容が有効なエリアの周辺エリアを識別する情報であることを特徴とする請求項10に記載の移動局。
- 前記管理部は、ネットワークから、位置情報に対応したセキュリティ情報を受信して管理しており、
前記検証部は、前記セキュリティ情報及び前記同報情報に付与されている電子書名を用いて、該同報情報についての検証を行うように構成されていることを特徴とする請求項8に記載の移動局。 - 前記処理部は、前記時刻情報について比較した結果、前記第2時刻情報が、該移動局によって管理されている現在の時刻情報の所定ウィンドタイム以内にあると判断した場合に、前記同報情報に対応する処理を行うように構成されていることを特徴とする請求項8に記載の移動局。
- 前記処理部は、前記時刻情報について比較した結果、前記第2時刻情報が、前記第1時刻情報よりも新しい時刻を示すと判断した場合に、前記同報情報に対応する処理を行うように構成されていることを特徴とする請求項8に記載の移動局。
- 移動通信システム内の移動局に対して同報情報を通知するように構成されている認証機関システムであって、
同報情報提供者システムから受信した同報情報に含まれる位置情報を前記移動通信システムにおけるエリア識別情報に変換し、該エリア識別情報によって識別されるエリアの周辺エリアを識別するエリア識別情報を該同報情報内の位置情報として追加した後に、該同報情報に対応する電子署名を該同報情報に付与して前記移動局に対して通知するように構成されている緊急情報送信部を具備することを特徴とする認証機関システム。
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US12/937,099 US8577282B2 (en) | 2008-04-09 | 2009-04-09 | Method for reporting multi-address information, mobile station and authentication organization system |
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JP5147450B2 (ja) | 2008-02-22 | 2013-02-20 | 株式会社エヌ・ティ・ティ・ドコモ | ページング信号送信方法及び移動局 |
JP5764720B2 (ja) * | 2012-06-27 | 2015-08-19 | 株式会社Nttドコモ | 情報処理装置、情報提供方法及びプログラム |
US9832648B2 (en) | 2014-03-11 | 2017-11-28 | Alcatel Lucent | Access control of geo-fenced services using co-located witnesses |
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