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WO2009039797A1 - Procédé, système et appareil pour mettre à jour dynamiquement les informations de classificateur - Google Patents

Procédé, système et appareil pour mettre à jour dynamiquement les informations de classificateur Download PDF

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Publication number
WO2009039797A1
WO2009039797A1 PCT/CN2008/072582 CN2008072582W WO2009039797A1 WO 2009039797 A1 WO2009039797 A1 WO 2009039797A1 CN 2008072582 W CN2008072582 W CN 2008072582W WO 2009039797 A1 WO2009039797 A1 WO 2009039797A1
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WIPO (PCT)
Prior art keywords
information
classifier
module
gateway
dynamically
Prior art date
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PCT/CN2008/072582
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English (en)
Chinese (zh)
Inventor
Shuo Li
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Anticipated expiration legal-status Critical
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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
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H04L47/2433—Allocation of priorities to traffic types
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]

Definitions

  • Embodiments of the present invention relate to the field of network communication technologies, and in particular, to a method, system, and apparatus for dynamically updating classifier information. Background technique
  • WiMAX Worldwide Interoperability for Microwave Access
  • the WiMAX network is mainly composed of three parts, that is, the client, the ASN (Access Service Network), the BS (Base Station), and the ASN-GW (Access Service Network-Gateway).
  • CSN Connectioned Service Network
  • PPS Prepaid Server
  • AAA Server Authentication Authority Account Server
  • HA Home Agent, Home Agent
  • the wireless side of the WiMAX network is a wireless metropolitan area network access technology based on the IEEE 802.16d/e standard.
  • the NWG Network Working Grou, Network Working Group of the WiMAX Forum
  • NWG Network Working Grou, Network Working Group of the WiMAX Forum
  • the NWG Stage2 network is shown in Figure 1.
  • the ASN includes two network elements, a BS and an ASN-GW.
  • the classification of services in the WiMAX system is mainly performed by the classifier.
  • the ASN-GW classifies the downlink data by matching the downlink classifier, and the MS (Mobile Subscriber) classifies the uplink data by matching the uplink classifier.
  • the classifier can identify one or a type of service with the same QoS (Quality of Service) attributes.
  • the existing classifiers are mainly classified by some parameters in the IP (Internet Protocol) header, see Table 1. These parameters are in the preset business flow.
  • IP Internet Protocol
  • the AAA server is configured to be sent to the ASN-GW through the authorization process.
  • the dynamic service flow it is determined in the application layer negotiation process and delivered to the ASN-GW through the policy server.
  • the relationship between the classifier and the user IP and DataPath (data path) is as shown in Figure 2.
  • the ASN-GW receives the downlink data packet, it can locate the above three classifiers according to the destination IP (user IP) of the packet, and then follow The priority in the classifier matches each classifier one by one. If a classifier is successfully matched, the packet corresponding to the classifier is used to forward the message to the BS.
  • the classifier template Although different services can be distinguished, the actual application
  • the specific parameters in the classifier template may not be available or difficult to collect and describe when setting up the classifier, and need to be dynamically updated in the business process. For example, in the following two application scenarios, the classifier information cannot be obtained when setting the classifier.
  • An operator requires self-operated services to directly access the Internet through the roaming gateway through HA, Internet services, emergency calls, etc. At this time, the user obtains the mobile IP address of the home location and the simple IP address of the roaming place, respectively.
  • the service can be distinguished by the terminal IP, but the terminal IP cannot be obtained when setting the classifier, and the existing classifier has no relevant design for dynamic update.
  • An operator requires the WiMAX ASN-GW to support the classification of services on the R3 interface by using a Virtual Local Area Network (Virtual Local Area Network).
  • the carrier believes that different services are connected through different tunnels in order to ensure service security.
  • the R3 interface to the ASN-GW can be differentiated according to the identifiers of the tunnels, such as the VLAN ID (Virtual Local Area Network Identifier) and the GRE Key (Generic Routing Encapsulation Key). .
  • the IP header parameter information is available in the existing classifier, and the existing process of classifying by the matching classifier cannot be compatible with the scenario that is classified by the connection or interface information.
  • the inventors have found that at least the following problems exist in the prior art:
  • the specific parameters in the classifier information cannot be obtained when the server sets the classifier, and the gateway cannot also use the classifier in the business process.
  • the parameters are dynamically updated, and the existing processes for classifying by matching classifiers are not compatible with scenarios that rely on interface information for classification. Summary of the invention
  • Embodiments of the present invention provide a method, system, and apparatus for dynamically updating classifier information, so as to implement dynamic update of classifier information, and enable classifier information to support scenarios that are classified according to interface information.
  • an embodiment of the present invention provides a method for dynamically updating classifier information, including the following steps: The gateway receives classifier information delivered by a server; The gateway determines whether the dynamic information existence bit in the classifier information is set; if set, the gateway dynamically updates the classifier information according to the dynamic information existence bit.
  • the embodiment of the present invention further provides a system for dynamically updating classifier information, including: a server, configured to set classifier information, and send the classifier information; and a gateway, connected to the server, And receiving the classifier information sent by the server, and determining whether the dynamic information presence bit in the classifier information is set, if set, dynamically updating the classifier according to the dynamic information existence bit information.
  • a server configured to set classifier information, and send the classifier information
  • a gateway connected to the server, And receiving the classifier information sent by the server, and determining whether the dynamic information presence bit in the classifier information is set, if set, dynamically updating the classifier according to the dynamic information existence bit information.
  • an embodiment of the present invention further provides a server, including: an information setting module, configured to set classifier information; and an information delivery module, connected to the information setting module, configured to set the information setting module The classifier information is sent to the gateway.
  • the embodiment of the present invention further provides a gateway, including: an information receiving module, configured to receive classifier information delivered by a server; and an information determining module, connected to the information receiving module, for determining the information
  • the information about the presence of the dynamic information in the classifier information received by the receiving module is set;
  • the information updating module is connected to the information determining module, and is configured to dynamically update the location after the information determining module determines that the dynamic information exists.
  • the embodiment of the present invention has the following advantages: By adding dynamic information in the classifier information, the application of the classifier is more flexible, and the existing process of classifying by the matching classifier can be compatible with the connection. Or the scenario where the interface information is classified. DRAWINGS
  • Figure 1 is a reference model of a prior art NWG Stage 2 network
  • FIG. 2 is a relationship diagram between a prior art classifier and a user IP and DataPath
  • FIG. 3 is a structural diagram of a system for dynamically updating classifier information according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for dynamically updating classifier information according to an embodiment of the present invention
  • the embodiment of the invention provides a method for dynamically updating the classifier information.
  • the embodiment of the present invention dynamically updates the classifier to make the application of the classifier more flexible, and also enables the existing classification by the matching classifier.
  • the process can be compatible with scenarios that rely on connection or interface information for classification.
  • a structural diagram of a system for dynamically updating classifier information includes a server 1 and a gateway 2.
  • Server 1 is used to set the classifier information, and the classifier information is sent to the gateway 2 through the authorization process.
  • a dynamic information existence bit is added to the template of the classifier.
  • the server 1 sets the classifier information, it determines whether the classifier information needs to be dynamically updated according to the classifier setting policy and the networking setting, and if the classifier information needs to be dynamically updated.
  • the server 1 sets the dynamic information to the location bit.
  • the dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information the gateway 2 wants to dynamically update, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched.
  • the gateway 2 is connected to the server 1 and is configured to receive the classifier information delivered by the server 1.
  • a dynamic parameter VPN ID Virtual Private Network Identifier
  • VLAN ID Virtual Private Network ID
  • GRE KEY GRE Key
  • the gateway 2 updates the parameter identified by the dynamic information existence bit when the service flow is established, and can distinguish different parameters by using the dynamically updated parameter when using the classifier classification. Business flow, and thus the classification function.
  • the server 1 includes an update judging module 11, an information setting module 12, and an information sending module 13.
  • the update judging module 11 is configured to determine, according to the classifier setting policy and the networking setting, whether to dynamically update the classifier information when the classifier information is set, and if the classifier information needs to be dynamically updated, the notification information setting module 12 sets the location of the dynamic information.
  • Bit The dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information to be dynamically updated by the gateway 2, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched.
  • the information setting module 12 is configured to: when the update determining module 11 determines that the classifier information needs to be dynamically updated, the dynamic information in the classifier information is in a position, and the present invention is implemented.
  • a method for setting the presence of dynamic information in the example is shown in Table 2.
  • the gateway 2 includes a relationship configuration module 21, an information receiving module 22, an information determining module 23, an information updating module 24, a classifier determining module 25, a classifier issuing module 26, and a classifying module 27.
  • the relationship configuration module 21 is configured to configure a correspondence between the service type and the interface information of the gateway 2, where the service type includes a VoIP service, a Game service, or an Internet service.
  • the information receiving module 22 is configured to receive the classifier information sent by the server 1.
  • the dynamic parameter VPN ID, VLAN ID, GRE KEY, etc. related to the interface information are newly added to the classifier information, and the meanings of these parameters are shown in Table 2.
  • the information judging module 23 is connected to the information receiving module 22 for determining whether the dynamic information presence bit in the classifier information received by the information receiving module 22 is set.
  • the information update module 24 is connected to the information judging module 223, and is configured to update the parameter identified by the presence bit of the dynamic information when the service flow is established after the information judging module 23 judges that the dynamic information exists.
  • the classifier determining module 25 is connected to the information updating module 24, and is configured to determine, after the information updating module 24 updates the classifier information, whether the classifier corresponding to each service type is unique; the classifier issuing module 26 and the classifier determining module The connection is sent to the classification module 27 after the classifier determination module 25 determines that the classifier corresponding to each service type is unique.
  • the classification module 27 is connected to the classifier delivery module 26 for classifying the downlink data by the classifier delivered by the matching classifier delivery module 26.
  • the priority of the Priority classifier determines the order in which the classifiers are matched, and the high-priority classifiers are advanced in line matching.
  • Bit #4 destination IP address Bit #3-1 Reserved, set to 0
  • IP TOS/DSCP Range and Mask The range and mask of the TOS/DSCP field in the IP header
  • Protocol type in the Protocol IP header
  • IP port destination port range IP port destination port range
  • VLAN ID receives the VLAN ID information of the 4 port
  • GRE KEY information on the GRE KEY receiving port Table 2 Dynamic Information Exist Flag, VPN ID, VLAN ID, GRE
  • the KEY is a newly added classifier parameter in the embodiment of the present invention. If the VPN ID bit in the Dynamic Information Exist Flag sent by the server 1 is set, that is, Bit #8 is set, the gateway 2 dynamically updates the VPN when the service flow is established. ID parameter, and this parameter is applied when the message is classified.
  • a flowchart of a method for dynamically updating classifier information includes the following steps:
  • Step S401 The gateway receives the classifier information delivered by the server.
  • the classifier information is dynamic information added in the classifier, and includes: a virtual private network identifier VPN ID, a virtual local area network identifier VLAN ID, and/or a universal route encapsulation key GRE KEY.
  • the server first sets the classifier information before the server sends the classifier information.
  • a dynamic information existence bit is added to the template of the classifier, and when the server sets the classifier information, the server determines whether the classifier information needs to be dynamically updated according to the classifier setting policy and the networking setting, and if the classifier needs to be dynamically updated. Information, then the server sets the dynamic information presence bit.
  • the dynamic information presence bit has two functions, one is to indicate which parameters in the classifier information to be dynamically updated by the gateway, and the other is to indicate which information is dynamic information that needs to be matched when the classifier is matched.
  • a method for setting a presence bit of dynamic information according to an embodiment of the present invention is shown in Table 2.
  • the interface includes a physical interface or a logical interface used by the gateway to connect with other devices, such as a FE interface, a GE interface, a tunnel interface, and a sub-interface.
  • the gateway interface information is specifically configured as the interface description information of the interface of the gateway according to different service types or applications. For example, after the sub-interface is bound to the VLAN, the interface has the VLAN ID information; the tunnel interface and the peer device establish a GRE tunnel. After that, this interface has GRE KEY information.
  • Step S402 the gateway determines whether the dynamic information existence bit in the classifier information is set. After receiving the classifier information, the gateway determines whether the dynamic information presence bit in the classifier information is set.
  • Step S403 if set, the gateway dynamically updates the classifier information according to the dynamic information existence bit. After judging that the dynamic information in the classifier information has a position bit, the gateway updates the parameter identified by the presence of the dynamic information when the service flow is established, and can distinguish different services by using the dynamically updated parameters when using the classifier classification. Stream, and then implement the classification function.
  • the dynamic parameter VPN ID, VLAN ID, GRE KEY, etc. related to the interface information are newly added to the classifier information, and the meanings of these parameters are as shown in Table 2.
  • the Dynamic Information Exist Flag, VPN ID, VLAN ID, and GRE KEY in Table 2 are the newly added classifier parameters in the embodiment of the present invention. If the VPN ID bit in the Dynamic Information Exist Flag sent by the server is set, Bit #8 is placed. Bit, the gateway dynamically updates the VPN ID parameter when the service flow is established, and applies the parameter when the message is classified.
  • the classifier information is dynamic information added in the classifier, including a VPN ID, a VLAN ID, and/or a GRE KEY.
  • the dynamically updated classifier information includes a source IP address and a destination IP address, and a source IP address and The destination IP address is obtained according to the information of the user of the classifier on the gateway, and the gateway queries the user entry corresponding to the classifier to obtain the IP address information and update the classifier information.
  • the gateway After updating the corresponding parameters according to the presence of the dynamic information, the gateway checks each type of service. The uniqueness of the classifier, check and pass, confirm that each type of service classifier is unique, and then send the classifier that updated the corresponding parameters to the entity that performs the classification function. After the downlink data arrives at the gateway, the gateway completes the data classification function by matching the valid parameters in the downlink classifier, including the original parameters of the classifier and the parameters added in the embodiment of the present invention. Then distribute the data of the good class to the client.
  • FIG. 5 it is a schematic diagram of Embodiment 1 of a method for dynamically updating classifier information according to the present invention.
  • FIG. 5 shows Internet service data, indicating VoIP service data.
  • a VoIP service tunnel is established between ASN-GW and a gateway of the VoIP network.
  • This tunnel can be identified by VPN. It can also be identified by a VLAN.
  • Other services can also establish other service tunnels between the gateway and the service gateway.
  • VPN ID or VLAN ID of these tunnels on the ASN-GW the classifier can distinguish different services.
  • the mapping between the service type and the VPN can be configured in advance on the ASN-GW.
  • MSI and MS2 are VPN users who have signed up for Internet, Game, and VoIP services. You can set the service classifier on the AAA Server as:
  • VoIP ⁇ Dynamic information exists in the VPN ID location bit ⁇
  • the ASN-GW After receiving the service classifier with the dynamic information in the location, the ASN-GW updates the VPN ID to the classifier information after querying the local configuration, and then checks whether the classifier of each type of service has uniqueness. To confirm that each type of service classifier is unique, it is delivered to the entity that performs the classification function.
  • the ASN-GW After a downlink packet arrives at the ASN-GW, according to the destination IP of the packet, that is, the user IP, the ASN-GW can locate the two classifiers above, and then follow the superiority in the classifier.
  • the first level matches each classifier one by one, in the embodiment of the present invention, the VPN due to the classifier information
  • the DataPath forwards the message to the BS.
  • the AAA Server sets the VPN ID bit in the bitifier information presence bit, and after receiving the classifier information, the ASN-GW updates the VPN ID to the classifier information.
  • the dynamic update of the classifier information is realized, and the existing process of classifying by the matching classifier can be compatible with the scenario that is classified according to the interface information.
  • the second embodiment of the present invention is a method for dynamically updating classifier information according to an embodiment of the present invention in a 3GPP (3rd Generation Partnership Project) system.
  • the classifier information parameters are shown in Table 3.
  • the dynamic information presence bit in Table 3 is the new 8-bit dynamic information presence bit.
  • the type identifier of the classification information parameter can be set as follows: Bits
  • the other values are reserved and may be set to 0.
  • the VPNID, the VLAN ID, and the GREKEY are the newly added classifier parameters in the embodiment of the present invention. If the classifier dynamic information sent by the server has a VPN ID bit in the bit, that is, Bit #8 is set. Then, the gateway dynamically updates the VPN ID parameter when the service flow is established, and applies the parameter when the message is classified.
  • An embodiment of the present invention provides a method for dynamically updating classifier information.
  • a dynamic information presence bit is added to the classifier information, and the gateway updates the corresponding parameter according to the presence of the dynamic information, and the solution is solved.
  • the problem that the existing classifier cannot be dynamically updated, and the existing process of classifying by the matching classifier through the newly added classifier parameters can be compatible with the scenario that is classified by the interface information.
  • the gateway dynamically updates the classifier information according to the presence of the dynamic information.
  • the ASN-GW obtains the dynamic update parameter after receiving the service classifier with the dynamic information.
  • VPN ID Updates the dynamically updated parameters to the classifier information.
  • Bit #7 VLAN ID: Same as VPN ID.
  • Bit #6 GRE KEY: Same as VPN ID.
  • Bit#5 Source IP address: It can be obtained according to the information recorded in the user table of the user of the classifier on the GW.
  • the IP address is dynamically allocated by the gateway after the user passes the authentication, and the IP assigned to the user is recorded in the user.
  • the user name of the user corresponding to the classifier can be obtained by updating the classifier to obtain the IP address information.
  • Bit#4 Destination IP Address: The same IP address.
  • the present invention can be implemented by hardware or by software plus a 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)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé permettant de mettre à jour des informations de classificateur. Le procédé comprend les étapes suivantes : la passerelle reçoit les informations de classificateur transmises par le serveur ; la passerelle décide si le drapeau d'existence d'informations dynamiques est dressé ; si le drapeau est dressé, la passerelle met à jour de façon dynamique les informations de classificateur en fonction du drapeau d'existence des informations dynamiques. À l'aide des modes de réalisation de l'invention, la passerelle met à jour les paramètres relatifs d'informations de classificateur selon l'information de classificateur définie par le serveur. De la sorte, le procédé pallie à l'inconvénient selon lequel l'art antérieur ne pouvait mettre à jour dynamiquement les informations de classificateur et rend la présente procédure de classification par classificateur de concordance compatible avec la scène de classification par les informations d'interface.
PCT/CN2008/072582 2007-09-28 2008-09-27 Procédé, système et appareil pour mettre à jour dynamiquement les informations de classificateur Ceased WO2009039797A1 (fr)

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CN200710151884.0A CN101399741B (zh) 2007-09-28 2007-09-28 一种动态更新分类器信息的方法、系统和装置

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US20160239736A1 (en) * 2015-02-17 2016-08-18 Qualcomm Incorporated Method for dynamically updating classifier complexity
CN109660464A (zh) * 2017-10-12 2019-04-19 中兴通讯股份有限公司 一种下行报文处理方法、upf设备和存储介质

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