WO2009046661A1 - Système, dispositif et procédé pour l'acquisition d'adresse locale - Google Patents

Système, dispositif et procédé pour l'acquisition d'adresse locale Download PDF

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Publication number
WO2009046661A1
WO2009046661A1 PCT/CN2008/072475 CN2008072475W WO2009046661A1 WO 2009046661 A1 WO2009046661 A1 WO 2009046661A1 CN 2008072475 W CN2008072475 W CN 2008072475W WO 2009046661 A1 WO2009046661 A1 WO 2009046661A1
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WO
WIPO (PCT)
Prior art keywords
network
home address
mobile node
home
server
Prior art date
Application number
PCT/CN2008/072475
Other languages
English (en)
Chinese (zh)
Inventor
Sheng Jiang
Zhongqi Xia
Yangsong Xia
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009046661A1 publication Critical patent/WO2009046661A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]

Definitions

  • the present invention relates to the field of Internet Protocol version 6 (IPv6) technology, and in particular, to a system, apparatus, and method for obtaining a home address.
  • IPv6 Internet Protocol version 6
  • Mobile IP Mobile IP
  • the basic principle is that the mobile node can always use the initial IP address for IP communication during the mobile process, so as to ensure that the upper layer application carried by the IP network layer maintains uninterrupted and continuable mobility.
  • IPv4 Internet Protocol version 4
  • IPv6-based mobile IPv6 Mobile Internet Protocol version 6, ⁇
  • Mobile IPv6 can easily meet the needs of large-scale mobile users and provide a globally unique IP address for every mobile terminal running on the Internet. In this way, it can solve mobility problems between the network and access technologies on a global scale.
  • the mobile node When a mobile node connects to its home network, the mobile node will work in the same way as other fixed nodes. If the mobile node finds that it has moved to the foreign network, it will obtain the care-of address on the foreign network through the stateful or stateless address auto-configuration process based on the received router advertisement information. At this time, the mobile node simultaneously Have a home address and a care-of address. The mobile node registers its care-of address with the "Binding Update" message to the home agent. The mobile node can also notify the communication partner of this care-of address by its "binding update" message registration.
  • the mobile node's communication partner If the mobile node's communication partner does not know its care-of address, it will send the data packet to the mobile node's home network according to the mobile node's home address, and then its home agent intercepts the data packet, and then according to the mobile node's current care-of address.
  • the tunnel mechanism is used to forward the data packets to the mobile node, and the packets sent by the mobile node to the communication partner are first sent to the home agent through the reverse tunnel, and then forwarded to the communication partner by the home agent. Because in this way, the data packets between the communication partner and the mobile node are transited through the home agent, so it is also called the "triangular routing" mode.
  • the communication partner If the communication partner knows the mobile node's care-of address, it will use the IPv6 routing header to directly transmit the packet to the mobile node.
  • the first destination address of the data packet is the handover address, and the second destination address is the home address, so the data packet is directly sent to the mobile node in the foreign network, without the need to transit through the home agent.
  • the source address of the packet sent by the mobile node to the communication partner is the care-of address, and the home address is stored in the destination extension header of the packet. In this way, the data packet can also be sent to the home agent without going through the reverse tunnel, but sent directly to the communication partner. This method is called the "route optimization" approach.
  • the mobile node In the basic IPv6 mobile protocol, only the mobile node is roamed to the foreign network in the state of being powered on, and the related communication process is defined. The process is based on the premise that the mobile node always has a home address and that the address is already registered with a home agent.
  • the embodiment of the invention provides a system, a method, a network access server and a mobile node for obtaining a home address, so that a mobile node that is connected to the foreign network can also enjoy the mobile IPv6 service.
  • the system for obtaining a home address includes a mobile node, a network access server, and a dynamic host configuration protocol (DHCP) server, where the network access server and the DHCP server are located in a foreign network to which the mobile node moves, where a mobile node, configured to send an access request to the network access server when the foreign network is powered on, and send a home address request to the DHCP server through the network access server after receiving the verification pass information returned by the network access server Request
  • DHCP dynamic host configuration protocol
  • a network access server configured to send verification information to the mobile node's home network according to the access request, and return the verification pass information to the mobile node after receiving the home network verification, and receive the home address provided by the home network,
  • the home address is carried in the home address request and forwarded to the DHCP server;
  • a DHCP server configured to parse the home address from the home address request request, and provide the home address to the mobile node through the network access server.
  • the network access server located in the foreign network receives an access request sent by the mobile node when the foreign network is started;
  • the network access server sends the verification information to the home network of the mobile node according to the access request, and the home network verification returns the verification pass information and the home address through the network access server;
  • the DHCP server located in the foreign network receives a home address request request sent by the mobile node through the network access server, where the network access server carries the home address in the home address request request and forwards the request to the DHCP server;
  • the DHCP server located in the foreign network resolves the home address from the home address request request, and provides the home address to the mobile node through the network access server.
  • the network access server provided by the embodiment of the present invention includes an information processing unit and a hometown Address processing unit;
  • the information processing unit is configured to send verification information to the home network of the mobile node according to the access request sent by the mobile node when the foreign network where the network access server is powered on, and return the verification pass information to the mobile node after the home network verification succeeds And receiving the home address provided by the home network, and receiving the home address request request sent by the mobile node after receiving the verification pass information, forwarding the home network of the mobile node to the mobile node
  • the home address provided by the DHCP server according to the home address request request;
  • the home address processing unit is configured to carry the home address to the DHCP server of the foreign network where the mobile node is located after the home address request request.
  • the mobile node provided by the embodiment of the present invention includes an access request processing unit and a home address application unit, where:
  • An access request sending unit configured to send an access request to a network access server located in the foreign network when the foreign network is powered on;
  • the home address application unit is configured to send a home address request request to the DHCP server through the network access server after receiving the verification pass information returned by the network access server, and receive the home address provided by the DHCP server;
  • the network access server is configured to send verification information to the mobile node's home network according to the access request, and after the home network verification passes, return the verification pass information to the mobile node and receive the home address provided by the home network, and Carrying the home address in the home address request request and forwarding it to a DHCP server located in the foreign network; the DHCP server located in the foreign network is configured to parse the home address from the home address request request, and pass the The network access server provides the home address to the home address application unit.
  • the mobile node that is connected to the foreign network accesses the network service using the network access server; while completing the authentication, the network access server dynamically obtains the home address assigned to the mobile node; the mobile node can then access the server through the network
  • the DHCP server requests to obtain a home address.
  • the embodiment of the invention has the following advantages:
  • the mobile node that is connected to the foreign network can also access the mobile node.
  • the application and allocation of the home address is completed, so that the mobile node that is connected to the foreign network can also enjoy the mobile IPv6 service.
  • FIG. 1 is a schematic structural diagram of a system for obtaining a home address according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for obtaining a home address according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a network access server according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a mobile node according to an embodiment of the present invention.
  • the mobile node that is powered on in the foreign network accesses the network service through the network access server of the foreign network; while completing the authentication, the network access server dynamically obtains from the home network of the mobile node.
  • FIG. 1 is a schematic structural diagram of a system for acquiring a home address according to an embodiment of the present invention.
  • the system includes a home network of a foreign network and a mobile node, and the mobile node 101 moves to a foreign network.
  • Both the network access server 102 and the DHCP server 103 are located in a foreign network to which the mobile node moves, where:
  • the mobile node 101 generally refers to a node that can move from one link to another on the Internet and can still maintain ongoing communication, and can communicate with the mobile node 101 as long as it knows the home address of the mobile node 101.
  • the mobile node 101 may specifically be a mobile phone or a PDA or the like.
  • the mobile node 101 is configured to send an access request including the mobile node identifier to the network access server 102 when the foreign network is powered on, and access the server through the network after receiving the verification pass information returned by the network access server 102.
  • 102 to the DHCP server 103 sends a home address request request.
  • the mobile node 101 can use the Remote Authentication Dial In User Service (RADIUS) protocol to send authentication information to the network access server 102 (specifically, the NAS Server) to request access to the network service.
  • the RADIUS protocol is an AAA protocol that is typically used for network access, or mobile IP services.
  • the RADIUS protocol may also be responsible for transmitting billing information between the network access server 102 and the shared billing server (not shown in Figure 1).
  • the network access server 102 is configured to send verification information to the home network of the mobile node 101 according to the access request, to verify the identity of the mobile node 101, and return the verification pass information and receive to the mobile node 101 after the home network verification passes.
  • the home address of the mobile node is provided by the home network of the mobile node 101, and the home address is forwarded to the DHCP server 103 after carrying the home address request request.
  • the DHCP server 103 is configured to parse the home address from the home address request request, and provide the home address to the mobile node 101 through the network access server 102.
  • the DHCP server 103 specifically uses the DHCP protocol to dynamically provide or allocate host-related configuration information.
  • the main functions include assigning dynamic IP addresses.
  • the network access server 102 may directly send the verification information to the home network of the mobile node 101 for authentication, or may send the verification information to the home network of the mobile node 101 for authentication by a third-party relay.
  • the network access server 102 can relay the authentication information via a verification authorization and accounting AAA server located in the foreign network.
  • the system further includes an AAA server 104 located in the foreign network.
  • the network access server 102 is configured to send the verification information to the AAA server 104.
  • the AAA server 104 is configured to send the verification information to the mobile node's home network for authentication.
  • the AAA server 104 can also send the home address and authentication pass information to the network access server 102 by receiving the verification pass information and the home address returned by the home network after the home network verification passes.
  • the security of the system can be improved by relaying the verification information through the AAA server 104.
  • the AAA transit mechanism is a management framework that provides a consistent framework for configuring the three security functions of authentication, authorization, and accounting. It is actually a management of network security.
  • the home network AAA server 105 and the home network DHCP server 106 may be specifically included.
  • the home network AAA server 105 is configured to receive authentication information of the AAA server 104 (or the network access server 102) located in the foreign network and perform verification, and after applying the verification, apply for the home address to the home network DHCP server 106, and apply for the application.
  • the home address to be sent is sent to the AAA server 104 (or network access server 102) located in the foreign network; the home network DHCP server 106 is configured to provide the home address to the home network AAA server 105 according to the application of the home network AAA server 105.
  • the mobile node 101 transmits its own access request including the mobile node identity to the network access server 102 of the foreign network using the remote user dialing authentication protocol; the network access server 102 determines the mobile according to the node identifier in the access request.
  • the node needs to obtain the home address, and sends the verification information to the local AAA server 104, where the verification message includes the home address request field; the local AAA server 104 forwards the verification message to the home AAA server 105, and the verification message includes the home address request field;
  • the home AAA server 105 verifies the user authentication information and, after passing the user authentication information, requests the home DHCP server 106 for an available home address.
  • the home DHCP server 106 returns a home address to the home AAA server 105; the home AAA server 105 returns a verification pass message to the local AAA server 104, the verification pass message containing a field carrying the home address; the local AAA server 104 to the network access server 102 returns a verification pass message, the verification pass message includes a field carrying a home address; the network access server returns a verification pass message to the mobile node, permitting the mobile node to access by itself, and simultaneously cache the home address corresponding to the mobile node.
  • the mobile node 101 applies to the local DHCP server 103 for obtaining the home address through the network access server 102; the network access server 102 forwards the DHCP request.
  • the network access server 102 forwards the DHCP request.
  • a field carrying the home address corresponding to the mobile node is added, and the DHCP server 103 responds to the mobile node 101 with the home address through the network access server 102, so that the mobile node 101 can obtain the home address and enjoy the mobile IPv6 correspondingly. service.
  • the embodiment of the invention further discloses a method for obtaining a home address, which specifically includes: a network access server located in a foreign network receiving an access request sent by a mobile node when the foreign network is powered on; the network access server according to the The access request sends verification information to the mobile node's home network, and the home network verification returns the verification pass information and the home address through the network access server; the DHCP server located in the foreign network receives the mobile node to send through the network access server.
  • a home address request request wherein the network access server forwards the home address to the DHCP server in the home address request request; the DHCP server parses the home address from the home address request request, and passes the The network access server provides the home address to the mobile node.
  • FIG. 2 is a schematic flow chart of a method for obtaining a home address according to an embodiment of the present invention.
  • the method includes two parts, an access authentication part and a DHCP address discovery part.
  • the specific includes:
  • Step S101 to step S102 the mobile node (MN) connects to the network access server (NAS) through a Layer 2 link protocol (such as the Radius protocol), and sends an access request including the identity of the mobile node to the NAS;
  • the incoming request sends authentication information to the AAA server of the local network, and the mobile node identity is included in the verification information.
  • Step S103 ?? Step S104 The AAA server communicates with the AAA server of the mobile node's home network, and the AAA server of the home network determines whether the mobile node is legal according to the mobile node identity to verify the mobile node; AAA server authentication of the home network When passing, the AAA server of the home network requests the home address (HoA request;) from the DHCP server of the home network.
  • HoA request the home address
  • Step S105 The DHCP server of the home network sends a home address response (HoA response) to the AAA server of the home network; AAA service of the home network The device returns a verification response to the AAA server of the foreign network where the mobile node is located, and returns the home address in the verification response.
  • HoA response home address response
  • Step S107 to step S108 After receiving the verification response, the NAS of the foreign network caches the home address of the mobile node, sends a verification response to the mobile node, and informs the mobile node to pass the verification.
  • the access verification section is completed, and then the DHCP address discovery section is sequentially executed.
  • the DHCP address discovery process specifically includes:
  • DHCP request in relay a DHCP relay request relay message
  • the HoA sub-option can be added to the sub-options of the above format.
  • the new HoA sub-option format can be as follows:
  • Steps S203 to S204 After receiving the DHCP relay request message, the DHCP server of the foreign network returns the home address assigned to the mobile node to the mobile node through the NAS.
  • the Home Address Information can carry a specific home address.
  • the home address option can be inserted by the related protocol or the format of the other fields.
  • the embodiment of the present invention does not limit this.
  • the embodiment of the invention also proposes a network access server.
  • FIG. 3 is a schematic structural diagram of a network access server according to an embodiment of the present invention.
  • the network access server includes an information processing unit 301 and a home address processing unit 302:
  • the information processing unit 301 is configured to send, according to an access request sent by the mobile node when the foreign network where the network access server is powered on, to the mobile node's home network. Verifying information; receiving verification pass information and home address from the home network, storing the home address, and transmitting the verification pass information to the mobile node;
  • the home address processing unit 302 is configured to receive a home address request request from the mobile node, and send the home address to the DHCP server of the foreign network where the mobile node is located in the home address request request, so that the The DHCP server parses the home address from the home address request request; and forwards the home address from the DHCP server to the mobile node.
  • the access server of the above structure can be specifically applied to the network to which the mobile node moves to help the mobile node apply for the home address.
  • the embodiment of the invention also proposes a mobile node.
  • FIG. 4 is a schematic structural diagram of a mobile node according to an embodiment of the present invention.
  • the mobile node includes an access request sending unit 401 and a home address requesting unit 402, where:
  • the access request sending unit 401 is configured to send an access request to the network access server located in the foreign network when the mobile node is powered on, where the access request includes a mobile node identifier;
  • the home address application unit 402 is configured to send, by the network access server, a home address request request to the foreign network DHCP server where the mobile node is located after receiving the verification pass information returned by the network access server, and receive the home address request request by the mobile node.
  • the home network address provided by the foreign network DHCP server through the network access server;
  • the network access server is configured to send verification information to the home network of the mobile node according to the access request, and after receiving the home network verification, the verification pass information returned by the home network and the home address of the mobile node are sent to the The mobile node returns the verification pass information; and after receiving the home address request request sent by the mobile node, the home address is carried to the DHCP server of the foreign network after the home address request request; the DHCP server of the foreign network uses The home address is parsed from the home address application request, and the home address is provided to the home address application unit through the network access server.
  • the mobile node that is connected to the network in the foreign network is connected.
  • the remote user dial-up authentication system is used to access the network service; while the authentication is completed, the network access server dynamically obtains the home address assigned to the mobile node; the mobile node can then apply to the DHCP server of the foreign network through the network access server. Home address. Therefore, after applying the embodiment of the present invention, the mobile node that is connected to the foreign network can also complete the application and allocation of the home address, so that the mobile node that is connected to the foreign network can also enjoy the mobile IPv6 service.
  • the embodiment of the present invention also utilizes the existing widely deployed mature technology to solve the allocation process of the home address, and thus is also relatively simple to implement.
  • the present invention can be implemented by hardware or by software plus necessary general hardware platform.
  • the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un système, un dispositif et un procédé pour l'acquisition d'adresse locale. Ledit système comporte : un nœud mobile pour transmettre une demande d'accès au serveur de réseau lors du démarrage dans le réseau étranger, et transmettre une demande d'application pour une adresse locale au serveur DHCP après la réception d'information de vérification réussie; un serveur d'accès au réseau pour transmettre l'information de vérification au réseau local du nœud mobile selon la demande d'accès, et pour renvoyer de l'information de vérification réussie au nœud mobile après la vérification réussie par le réseau local, et ensuite recevoir l'adresse locale fournie par le réseau local, pour transmettre la demande d'application d'adresse locale avec l'adresse locale au serveur DHCP ; un serveur DHCP pour analyser l'adresse locale provenant de la demande d'application d'adresse locale, et fournir l'adresse locale au nœud mobile. Grâce à l'utilisation de la présente invention, le service mobile IPv6 peut être rendu disponible au nœud mobile lorsqu'il démarre et accède au réseau étranger.
PCT/CN2008/072475 2007-09-30 2008-09-23 Système, dispositif et procédé pour l'acquisition d'adresse locale WO2009046661A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101627689A CN101399855B (zh) 2007-09-30 2007-09-30 一种获取家乡地址的系统、装置和方法
CN200710162768.9 2007-09-30

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WO2009046661A1 true WO2009046661A1 (fr) 2009-04-16

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WO (1) WO2009046661A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012149783A1 (fr) * 2011-09-29 2012-11-08 华为技术有限公司 Procédé, dispositif et équipement utilisateur applicables dans l'accès à un réseau mobile

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JP2004129210A (ja) * 2002-07-30 2004-04-22 Matsushita Electric Ind Co Ltd 移動管理方法および移動端末
CN1697548A (zh) * 2004-05-14 2005-11-16 华为技术有限公司 一种移动IPv6节点远程动态配置家乡地址的方法
CN1972321A (zh) * 2005-11-25 2007-05-30 华为技术有限公司 一种获取IPv6地址相关家乡网络配置信息的方法和系统
US20070136590A1 (en) * 2005-12-10 2007-06-14 Nah Jae H Network system and communication methods for securely bootstraping mobile IPv6 mobile node using pre-shared key

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2004129210A (ja) * 2002-07-30 2004-04-22 Matsushita Electric Ind Co Ltd 移動管理方法および移動端末
CN1697548A (zh) * 2004-05-14 2005-11-16 华为技术有限公司 一种移动IPv6节点远程动态配置家乡地址的方法
CN1972321A (zh) * 2005-11-25 2007-05-30 华为技术有限公司 一种获取IPv6地址相关家乡网络配置信息的方法和系统
US20070136590A1 (en) * 2005-12-10 2007-06-14 Nah Jae H Network system and communication methods for securely bootstraping mobile IPv6 mobile node using pre-shared key

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CN101399855A (zh) 2009-04-01

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