WO2007137473A1 - Procédé, système et dispositif de collecte d'information de routeur d'accès - Google Patents

Procédé, système et dispositif de collecte d'information de routeur d'accès Download PDF

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Publication number
WO2007137473A1
WO2007137473A1 PCT/CN2007/000691 CN2007000691W WO2007137473A1 WO 2007137473 A1 WO2007137473 A1 WO 2007137473A1 CN 2007000691 W CN2007000691 W CN 2007000691W WO 2007137473 A1 WO2007137473 A1 WO 2007137473A1
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WO
WIPO (PCT)
Prior art keywords
information
icr
sends
neighboring
same location
Prior art date
Application number
PCT/CN2007/000691
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English (en)
Chinese (zh)
Inventor
Jian Zhang
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 WO2007137473A1 publication Critical patent/WO2007137473A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a method and system for collecting information of an access router (AR), and an AR and an AR information collecting router (AR-ICR) in the system.
  • AR access router
  • AR-ICR AR information collecting router
  • IP Mobile Internet Protocol
  • IPv4 Internet Protocol Version 4
  • IPv6 Internet Protocol version 6
  • the Internet Engineering Task Force has developed the IPv6-based Mobile IPv6 protocol ( ⁇ ).
  • the basic principle of mobile IP technology is to enable mobile nodes to always use the initial IP address for IP communication during the mobile process, thus ensuring IP network layer bearer.
  • the upper application remains uninterrupted and contiguous on the move.
  • mobile node handover operations involve motion detection, IP address configuration, and bits. With the steps of updating, etc., the delay of these operations has already affected the upper-layer applications, especially the real-time applications that are sensitive to delay.
  • the IETF has developed the Fast Mobile IPv6 Protocol (FMIPv6), RFC4068, which provides a way to reduce handover delay.
  • FMIPv6 Fast Mobile IPv6 Protocol
  • the present invention proposes a method for collecting AR information, which does not rely on manual configuration and mobile node triggering to automatically collect AR information.
  • the present invention also proposes a system for collecting AR information and the AR and AR-ICR used therein.
  • the method for collecting AR information according to the present invention includes:
  • the AR sends an update message including one or more AR information to the AR-ICR.
  • the AR-ICR sends the AR information to the neighboring AR in the same location as the AR.
  • the system for collecting AR information according to the present invention includes an AR-ICR and at least two ARs, the AR-ICR is configured to receive and save AR information from the AR, and send the AR information to the AR. a neighboring AR in the same location; the AR is configured to send its own AR information to the AR-ICR, and receive and save the AR information of the neighboring AR sent by the AR-ICR.
  • the AR-ICR of the present invention includes an AR-ICR storage module and an AR-ICR control module, wherein the AR-ICR storage module is configured to store AR information of the access router AR; and the AR-ICR control module is configured to receive from the AR. AR information and save the AR information in AR-ICR And in the storage unit and sent to the adjacent AR in the same location as the AR.
  • the AR of the present invention includes an AR storage module and an AR control module, where the AR storage module is configured to store its own AR information and AR information of the adjacent AR; the AR control module is configured to send its own AR information to the AR-ICR, and The AR information of the neighboring AR transmitted by the AR-ICR is received and stored in the AR storage module.
  • each AR sends its own AR information to the AR-ICR, and then is distributed by the AR-ICR to the adjacent AR located at the same location, so that the implementation of the present invention can be independent of manual configuration.
  • disadvantages such as poor scalability and poor maintainability are avoided, and since it is not triggered by the mobile node, the disadvantage of being subjected to malicious attacks by the mobile node is avoided.
  • the invention can further collect the AR information after the authentication succeeds, thereby improving the security of the network.
  • the present invention does not need to modify the Layer 2 protocol to facilitate deployment in an existing network.
  • FIG. 1 is a schematic diagram of the basic principle of FMIPv6
  • FIG. 2 is a schematic diagram of a network model in an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of an AR information collection process according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a registration process in an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a logout process in an embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of an aging process according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an AR-ICR and an AR according to an embodiment of the present invention. Mode for carrying out the invention
  • FIG 1 shows the implementation of FMIPv6. As shown in Figure 1, FMIPv6 roughly includes the following process:
  • the mobile node After detecting that there is more than one Access Point (AP) nearby, the mobile node sends a Router Request Proxy Advertisement (RtSolPr) message to the previous Access Router (PAR) to resolve the access point identification information of the access router. More than one access point identifier (AP-ID) is included in the RtSolPr message, and all available information can be requested using a wildcard.
  • RtSolPr Router Request Proxy Advertisement
  • AP-ID access point identifier
  • the PAR sends a proxy router advertisement (PrRtAdy) message to the mobile node according to the saved A information ([AP-ID, AR-Info]) of the neighboring AR in the same location as the PAR.
  • the AR information includes the AP (AP-ID) and the Layer 2 address, IP address, and prefix information of the AR.
  • the mobile node generates a new care-of address (NCoA) according to the received PrRtAdv message, and sends a Fast Binding Update (FBU) message to the PAR on the PAR link, the message containing the generated NCoA.
  • NCoA new care-of address
  • FBU Fast Binding Update
  • the PAR After receiving the FBU message, the PAR sends a handover initialization (HI) message to the new access router (NAR), which contains the old care-of address (PCoA), the link-layer address, and the NCoA carried in the FBU.
  • HI handover initialization
  • the NAR needs to specify a new NCoA for the mobile node and include it in the handover acknowledgement (Hack) message and send a hack to the PAR. If the NCoA in the HI message is accepted by the NAR, the hack is sent directly to the PAR without specifying a new NCoA.
  • Hack handover acknowledgement
  • PAR creates a binding between PCoA and NCoA, and sends a fast binding confirmation (FBack) message to the mobile node. If the NAR is assigned a new NCoA, it should be included in the FBack message and provided to the mobile node. The mobile node should use This NCoA.
  • the mobile node After the mobile node establishes a connection with the NAR, the mobile node shall send a Fast Neighbor Advertisement (FNA) message to the NAR, and the new access point (NAP) forwards the buffered message.
  • FNA Fast Neighbor Advertisement
  • FIG. 2 is a schematic diagram of a network model for collecting AR information in FMIPv6 according to an embodiment of the present invention.
  • an AR information collecting router (AR-ICR) is set in an access network, and the AR-ICR receives the AR information of each A, and sends the AR information of each AR to the same as the AR.
  • the AR-ICR is connected to each AR in the access network, for example, AR1, AR2, and AR3.
  • Each AR has an AP connected to it, for example, AR1 is connected to AP11 and AP12, AR2 is connected to AP21, and AR3 and AP31 are connected.
  • AP32 is connected. It may be assumed here that AR1 and AR2 are ARs that are adjacent to each other, and AR3 is an AR that is not adjacent to both.
  • the AR information collection process includes the following steps:
  • Step 101 The AR sends an update message including one or more [AP-ID, AR-Info] to the AR-ICR.
  • the [AP-ID, AR-Info] mainly includes the AP-ID and the Layer 2 address, IP address, and prefix information of the AR.
  • the update message may further include a life cycle of each [AP-ID, AR-Info].
  • A may perform step 101 after the trigger condition is met, for example, the AR occurs to increase/delet AP, arrives at a periodic or irregular transmission time, the AR checks that its own life cycle is about to time out, or the AR checks itself.
  • the life cycle of AP-ID, AR-Info] is about to time out and so on.
  • Step 102 After receiving the AR update message, the AR-ICR obtains each AR according to the pre-preservation.
  • the location information is obtained by the neighboring AR in the same location as the AR, and the [AP-ID, AR-Info] is sent to the neighboring AR in the same location as the AR.
  • Step 103 After receiving the notification from the AR-ICR, the neighboring AR in the same location as the AR saves the received [AP-ID, AR-Info]
  • the registration process of the AR on the AR-ICR can be performed before the step 101, for example, when the AR is started, and only the registered AR can send the update message to the AR-ICR.
  • the registration process is as follows:
  • Step 201 The AR sends a registration message including at least an AR identifier (AR-ID) and location information to the AR-IRR.
  • AR-ID AR identifier
  • the life cycle of the AR may further be included in the registration message.
  • the registration message includes a life cycle as an example.
  • Step 202 After receiving the registration message of the AR, the AR-ICR saves the AR-ID, the location information, and the life cycle in the registration message, and sends an acknowledgement message to the A.
  • the AR-ICR may also send the [AP-ID, AR-Info] of the neighboring AR that is saved in the same location as the AR to the AR. Further, in order to reduce the number of messages, the [AP-ID, AR-Info] of the adjacent AR may be sent to the A by using an acknowledgement message.
  • the AR After receiving the confirmation message, the AR indicates that the registration is successful and can perform the steps described above.
  • AAA authentication, authorization, and accounting
  • the AAA protocol may be a remote authentication dial-up user service (RADIUS) protocol, an upgraded version of the RADIUS protocol Diameter protocol, or an extensible authentication protocol (EAP).
  • RADIUS remote authentication dial-up user service
  • EAP extensible authentication protocol
  • step 103 when the AR exits the FMIPv6 protocol, the logout process as shown in FIG. 5 can be performed. Referring to Figure 5, the process includes the following steps:
  • Step 301 The AR sends a logout message including at least an AR-ID to the AR-ICR, and deletes In addition to all AR information stored locally, such as AR-ID of its own and other ARs, location information, life cycle, and corresponding [AP-ID, AR-Info] and life cycle.
  • Step 302 After receiving the logout message of the AR, the AR-ICR deletes the AR-ID, the location information, the life cycle, the corresponding [AP-ID, AR-Info], and the life cycle of the AR saved locally, and Notifying the neighboring ARs in the same location as the AR deletes the information.
  • Step 303 After receiving the AR-ICR notification, the neighboring AR that is in the same location as the AR deletes the locally saved AR-ID, location information, life cycle, and corresponding [AP-ID, AR- Info] and life cycle.
  • step 103 if an AR hangs, the aging process of the AR information is performed.
  • the process includes the following steps:
  • Step 401 The AR-ICR periodically checks the life cycle of each A and the life cycle of each [AP-ID, AR-Info]. If the life cycle of an AR is detected, or an [AP-ID, AR- After the life cycle of Info] ends, step 402 is performed.
  • Step 402 If the life cycle of an AR ends, in this step, the AR-ICR deletes the AR-ID, the location information, the life cycle, and the corresponding [AP-ID, AR-Info] and the life cycle thereof. And sending a notification to the neighboring AR that is in the same location as the AR, and informing it to delete the AR-ID of the AR, the location information, the life cycle, and the corresponding [AP-ID, AR-Info] and their life cycle.
  • the AR-ICR deletes the [AP-ID, AR-Info] and its life cycle, and is in the same position as the AR.
  • the neighboring AR sends a notification to inform it to delete the above [AP-ID, AR-Info] and its life cycle.
  • Step 303 After receiving the notification, the neighboring AR deletes the corresponding information.
  • a system for collecting AR information is as follows.
  • the system includes an AR-ICR and one or more ARs, and the structures of the AR-ICRs and ARs are as shown in FIG. 7.
  • the AR-ICR includes an AR-ICR control module and
  • the AR-ICR storage module may further include an AR-ICR aging module; and the AR includes an AR control module and an AR storage module, and may further include a registration module, a logout module, and an AR aging module.
  • the AR-ICR storage module stores the AR-ID, location information, lifetime, and corresponding [AP-ID, AR-Info] and their lifetimes of each AR.
  • the AR storage module stores its own AR-ID, location information, life cycle, and its own [AP-ID, AR-Info] and its lifetime. It also stores the AR-ID, location information, and lifetime of the neighboring AR. Adjacent AR [AP-ID, AR-Info] and its life cycle.
  • the AR control module reads one or more of its own [AP-ID, AR-Info] from the AR storage module, and sends the one or more to the AR-ICR control module.
  • the AR-ICR control module stores the [AP-ID, AR-Info] in the AR-ICR storage module, and according to the location of each AR pre-stored in the AR-ICR storage module.
  • Information, the [AP-ID, AR-Info] is sent to the adjacent AR at the same location as the AR.
  • the adjacent ARs at the same position have the same structure as A in Fig. 7, and thus are not shown in Fig. 7.
  • the AR control module of the neighboring AR saves the received [AP-ID, AR-Info] in its AR storage module.
  • the registration module of A reads its AR-ID, location information, and lifetime from the AR storage module, and sends a registration message including the information to the AR-ICR control module.
  • the AR-ICR control module After receiving the registration message of A, the AR-ICR control module saves the AR-ID, the location information, and the life cycle in the registration message in the AR-ICR storage module, and uses the confirmation message to be adjacent to the AR in the same location.
  • the AR information of the AR is sent to the AR.
  • the AR registration module indicates that the registration is successful.
  • the AR's logout module sends a logout message including at least the AR-ID to the AR-ICR, and deletes all A information stored in the AR storage module, such as itself and Other AR AR-ID, location information, life cycle and corresponding [AP-ID, AR-Info] and their life cycle.
  • the AR-ICR control module deletes the AR-ID, location information, life cycle, and corresponding [AP-ID, AR-Info] and survival of the AR saved by the AR-ICR storage module. Cycle, and notify the AR that is adjacent to the AR in the same location to delete the information.
  • the AR control module of the neighboring AR After receiving the AR-ICR notification, the AR control module of the neighboring AR that is in the same location as the AR deletes the AR-ID, location information, life cycle, and corresponding [AP] of the AR stored in the local AR storage module. -ID, AR-Info] and life cycle.
  • the AR-ICR aging module periodically checks the life cycle of each AR of the AR-IRR storage module and the lifetime of each [AP-ID, AR-Info]. If the end of the life cycle of an AR is detected, or check When the life cycle of an [AP-ID, AR-Info] ends, the corresponding AR information is deleted, and a notification is sent to the AR control module of the neighboring AR that is in the same location as the AR, and the AR information is deleted. After receiving the notification, the AR control module of the neighboring AR deletes the AR information in the AR storage module.
  • the AR aging module periodically checks the life cycle of the ARs of the AR storage module and the lifetime of each [AP-ID, AR-Info]. If the life cycle of an AR is detected, or an [AP] is detected. If the lifetime of the -ID, AR-Info is over, the corresponding AR information is deleted. For example, if the lifetime of a neighboring AR is over, the AR-ID, lifetime, and [AP-ID] of the AR are deleted. , AR-Info] and the life cycle; after checking the end of the life cycle of [AP-ID, AR-Info] of a neighboring AR, delete the [AP-ID, AR-Info] and the life cycle.

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

Abstract

Procédé de collecte d'information de routeur d'accès, selon les étapes suivantes: lorsqu'un routeur d'information AR (AR-ICR) est établi dans le réseau d'accès, AR envoie un message de mise à jour, qui comprend au moins une information AR, à AR-ICR, qui transmet alors ladite information en amont aux AR voisins se trouvant dans la même position que l'AR en question. On décrit aussi le système de collecte d'information AR ainsi que l'AR-ICR et l'AR intervenant dans le système. Ainsi, il est possible de collecter automatiquement l'information AR sans faire appel à une configuration artificielle et déclencher le noeud mobile, ce qui permet d'éviter, dans l'état actuel de la technique, les inconvénients d'une expansion et d'une maintenance médiocre et d'une vulnérabilité aux attaques malveillantes par des noeuds mobiles. Enfin le déploiement est aisé dans un réseau actuel.
PCT/CN2007/000691 2006-05-25 2007-03-05 Procédé, système et dispositif de collecte d'information de routeur d'accès WO2007137473A1 (fr)

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CN200610081095.X 2006-05-25
CNA200610081095XA CN101047674A (zh) 2006-05-25 2006-05-25 一种收集接入路由器信息的方法及其系统

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CN102869062B (zh) * 2011-07-07 2016-05-18 中国科学院上海高等研究院 一种实现wlan轨道通信系统快速切换的方法
CN108881520B (zh) * 2018-08-30 2021-04-16 中国联合网络通信集团有限公司 一种IPv6地址的分配方法及SMF、通信系统

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