WO2011009253A1 - Procédé et système de recherche d'un nom de domaine dans un réseau mobile - Google Patents

Procédé et système de recherche d'un nom de domaine dans un réseau mobile Download PDF

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Publication number
WO2011009253A1
WO2011009253A1 PCT/CN2009/075202 CN2009075202W WO2011009253A1 WO 2011009253 A1 WO2011009253 A1 WO 2011009253A1 CN 2009075202 W CN2009075202 W CN 2009075202W WO 2011009253 A1 WO2011009253 A1 WO 2011009253A1
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WO
WIPO (PCT)
Prior art keywords
domain name
name server
home
server
address
Prior art date
Application number
PCT/CN2009/075202
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English (en)
Chinese (zh)
Inventor
朱春晖
宗在峰
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011009253A1 publication Critical patent/WO2011009253A1/fr

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Classifications

    • 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
    • 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
    • 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
    • H04L61/4588—Network directories; Name-to-address mapping containing mobile subscriber information, e.g. home subscriber server [HSS]
    • 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
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/503—Internet protocol [IP] addresses using an authentication, authorisation and accounting [AAA] protocol, e.g. remote authentication dial-in user service [RADIUS] or Diameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for domain name query in a mobile network.
  • the Mobile IP protocol is a network layer scheme that provides mobile functions over the Internet (Internet), by which a node can be made to switch links without interrupting ongoing communications.
  • the Mobile IP protocol provides an IP routing mechanism that allows mobile nodes to be accessed through their home address when accessing a foreign link.
  • a mobile node (Mobile Node, abbreviated as MN) is a node in a mobile IP that can be accessed through its home address after being able to move from the connection point of one link to another.
  • MN Mobile Node
  • the User Equipment (UE) in the present invention may also be referred to as a mobile node.
  • HA Home Agent
  • MN the home agent of the MN
  • HoA Home Address
  • the Home Address (HoA) is a permanent IP address assigned to the mobile node and belongs to the home link of the mobile node. The standard IP routing mechanism sends packets addressed to the mobile node's home address to its home link.
  • FIG. 1 is a system architecture diagram of an evolved packet system (Evolved Packet System, abbreviated as EPS).
  • EPS evolved Packet System
  • the 3rd Generation Partnership Project (3GPP) The standardization working group is currently working on the next generation evolution of the core network system, namely the Evolved Packet Core (EPC), in order to provide users with higher transmission rates and shorter transmission delays.
  • EPC Evolved Packet Core
  • the EPC system supports the access of the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), and also supports the access of non-3GPP (Non-3GPP) access networks, for example, global Worldwide Interoperability for Microwave Access (WiMAX) network.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • Non-3GPP non-3GPP access networks
  • WiMAX global Worldwide Interoperability for Microwave Access
  • the UE is in a non-roaming situation and accesses the EPC through a Non-3GPP access network (including a trusted and untrusted Non-3GPP access network).
  • the network element in the figure further includes: a Serving Gateway (S-GW for short), a Packet Data Network GateWay (P-GW for short), and a Home Subscriber Server (referred to as Home Subscriber Server).
  • S-GW Serving Gateway
  • P-GW Packet Data Network GateWay
  • Home Subscriber Server referred to as Home Subscriber Server
  • the non-3GPP access network shown in Figure 1 includes the following two types: Trusted Non-3GPP Access (trusted Non 3GPP Access) There is a trust relationship between the 3GPP network and the non-3GPP access system, and the trusted non-3GPP access system can directly access the P-GW untilUntrusted Non 3 GPP Access, 3GPP network and There is no trust relationship between the non-3GPP access systems.
  • the untrusted non-3GPP access system must first access the ePDG of the 3GPP network and then access the P-GW. At this time, a secure tunnel is established between the UE and the ePDG to ensure secure transmission of data between the UE and the 3GPP network.
  • the dual stack mobile IP protocol version 6 (Dual Stack ⁇ , abbreviated as DS-MIPv6) is used to maintain the user IP address.
  • the P-GW has the function of HA.
  • a trusted non-3GPP access network or ePDG will assign a CoA to the UE.
  • the UE uses the mobility service, the UE initiates the Internet Key Exchange version 2 (Internet Key Exchange version 2, IKEv2 for short) to establish a security association with the HA, and the HA allocates an IP address (HoA) to the UE and sends the address to the UE.
  • HoA IP address
  • Step 201 The UE accesses the PDN GW through the evolved UTRAN and the monthly service gateway, in the HSS.
  • the service access P-GW is currently stored for the UE, and the service is identified by an access point name (APN), and the P-GW is referred to as a target P-GW.
  • Step 202 The UE switches to the non-3GPP access network to establish a connection with the trusted non-3GPP network or the ePDG.
  • Step 203 The UE starts the dual-stack mobile IPv6 protocol stack, and starts to search for the IP address of the HA.
  • the UE obtains the IP address of the HA, that is, the P-GW address may be a domain name system (Domain Name System, referred to as DNS) Query by the server:
  • DNS Domain Name System
  • the UE sends the Home Agent-Access Point Name (HA-APN) to the DNS Server.
  • the format of the HA-APN can be Internet.ha-apn.mnc012.mcc345.pub.3gppnetwork.org, where internet indicates the service that the UE wants to access, HA-APN indicates that the UE needs to query an HA, and mnc is the mobile network code.
  • Step 204 The UE obtains an address list of the PDN GW returned by the DNS server, and selects an address from which the PDN GW corresponding to the address is not the target PDN GW but the initial PDN GW.
  • the UE establishes a security association with the UE.
  • the initial PDN GW acquires the address of the target PDN GW from the HSS, sends it to the UE, and instructs the UE to redirect to the target PDN GW, indicating the home agent conversion.
  • Step 205 The UE establishes a DSMIPv6 security association and a binding relationship with the target PDN GW obtained in step 204, completes the handover, and implements service continuity. It can be seen from the foregoing steps that in the prior art, the UE cannot directly establish a DSMIPv6 binding with the PDN GW connected before the handover, and a home agent conversion process is required. This conversion process wastes resources of the network and delays the speed of the UE accessing the network. , affecting the user experience.
  • the main object of the present invention is to provide a method and a system for querying a domain name in a mobile network, which are used to solve the problem that a UE cannot directly establish a DSMIPv6 binding with a PDN GW connected before handover, and thus needs to be executed.
  • the home agent conversion process leads to the problem of delaying the speed at which the UE accesses the network.
  • a method for domain name query in a mobile network when a user equipment UE accesses a 3GPP evolved packet core network through an evolved universal terrestrial radio access network E-UTRAN
  • the method includes: the UE sends a query request for querying the IP address of the home agent HA to the domain name server; the domain name server queries the home user server HSS, and obtains the IP address of the home agent HA; Sending the IP address of the home agent HA to the UE.
  • the method includes:
  • the UE sends a query request carrying the user identity and the home agent-access point name HA-APN to the domain name server; A2, the domain name server forwards the query request of the UE to the HSS;
  • the HSS searches for an IP address of the home agent HA corresponding to the service part of the HA-APN, and sends the query result to the domain name server.
  • the domain name server forwards the IP address of the home agent HA to the UE.
  • the domain name server refers to the home network domain name server HPLMN DNS Server, and the home network name server is preset in the UE by the operator.
  • the domain name server includes a visited domain name server VPLMN DNS Server and a home i or a monthly server HPLMN DNS Server. When the IP address of the home agent HA is queried, the domain name server is visited. Forwarding the query request to the home domain name server, the home domain name server queries the home subscriber server HSS, thereby obtaining the IP address of the home agent HA. Further, in the roaming scenario, the method includes:
  • B1 The UE sends a query request carrying the HA-APN and the user identity to the visited domain name server VPLMN DNS Server; B2, the visited domain name server forwards the query request to the home domain name corresponding to the user identity identifier HPLMN DNS Server;
  • the home domain name server will query the service part and the user body in the HA-APN in the request.
  • the identification is forwarded to the HSS;
  • the HSS searches for the IP address of the home agent HA corresponding to the service part in the HA-APN saved by itself, and forwards the address to the server through the visited domain name server and the home domain name server.
  • the user identity is an International Mobile Subscriber Identity (IMSI), and the used IMSI includes a mobile station country code MCC and a mobile station network code MNC.
  • IMSI International Mobile Subscriber Identity
  • the domain name server needs to query the IP address of the home agent HA according to the network identifier ID of the home agent, and then send the IP address to the UE.
  • the present invention also provides a corresponding implementation system, and the specific solution is as follows:
  • a system for domain name query in a mobile network including a user equipment UE, a domain name server DNS server, a home subscriber server HSS, and a UE accessing 3GPP evolution
  • the modules and the specific functions are as follows:
  • the device UE is configured to send a query request carrying the user identity and the home agent-access point name HA-APN to the domain name server;
  • the home user server HSS used for the authentication And searching, according to the query request, an IP address of the home agent HA corresponding to the service part of the HA-APN of the UE, and feeding back a query result to the domain name server.
  • the domain name server refers to the home network domain name server HPLMN DNS Server, and the home network name server is preset in the UE by the operator.
  • the domain name server includes: a visited domain name server: configured to receive a query request that carries the HA-APN and the user identity sent by the UE, and forward the query request to the user identity identifier.
  • the home domain name server is responsible for forwarding the query result fed back by the home domain name server to the UE; a home domain name server: for forwarding a query request sent by the visited domain name server to the HSS; searching, at the HSS, the home agent HA corresponding to the service part of the HA-APN After the IP address, the feedback result of the HSS is forwarded to the visited domain name service.
  • the user identity is an International Mobile Subscriber Identity (IMSI), and the used IMSI includes a mobile station country code MCC and a mobile station network code MNC.
  • IMSI International Mobile Subscriber Identity
  • the domain name server needs to query the IP address of the home agent HA according to the network identifier ID of the home agent, and then feeds back to the UE.
  • the home agent is obtained by directly querying the HSS through the domain name server.
  • FIG. 1 is a schematic diagram of an EPS system according to the prior art
  • FIG. 2 is a flowchart of a home agent conversion according to the prior art
  • FIG. 3 is a domain name query in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 4 is a flowchart of performing domain name query in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of performing domain name query in a roaming scenario according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of performing domain name query in a non-roaming scenario according to an embodiment of the present invention. Compared with the architecture in the non-roaming scenario in the prior art shown in FIG.
  • FIG. 4 is a flowchart of performing a domain name query in a non-roaming scenario according to the embodiment of the present invention. The process is based on the architecture of FIG.
  • Step 401 The UE passes The evolved UTRAN and the monthly service gateway access the target PDN GW.
  • Step 402 The UE switches to the non-3GPP access network to establish a connection with the trusted non-3GPP or ePDG.
  • Step 403 The UE starts the DSMIPv6 protocol stack, and starts to query the IP address of the HA.
  • the UE sends a query message to the DNS server through the D1 interface, where the query may carry the user identity IMSI and the HA-APN.
  • the above HA-APN is internet.ha-apn.mnc012.mcc345.pub.3gppnetwork.org; the security and trust relationship need to be established between the UE and the DNS server.
  • the operator may pre-set some in the UE. Trusted Home Network Domain Name Server (HPLMN), which interacts with these DNS servers when the UE needs to perform DNS queries.
  • HPLMN Trusted Home Network Domain Name Server
  • the method of pre-setting the DNS server in the UE can also be applied to the case where the user is in a roaming state.
  • the UE can There is no scenario of Embodiment 2 to directly contact the HPLMN DNS Server without going through the Visiting Public Land Mobile Network (VPLMN) DNS Server.
  • Step 404 after receiving the above query, the DNS server will have ha-apn in the HA-APN. Partially removed, reserved internet.mnc012.mcc345.pub.3gppnetwork.org, the APN is obtained, and the IMSI is sent to the HSS through the D2 interface to query the ID or IP of the PDN GW of the user's internet service stored in the HSS. address.
  • Step 405 The HSS searches for the ID or IP address of the PDN GW of the user's internet service saved by itself, and sends the ID or IP address to the DNS server.
  • the PDN GW in this step is HA for the UE, but is the PDN GW for the HSS, and actually refers to the same network element, and the IP address is also the same.
  • the access is the HA in the DSMIP protocol, and for the HSS, the IP address of the PDN GW is stored.
  • Step 406 When the HSS returns the IP address of the PDN GW, the DNS server may directly return the address to the UE.
  • Step 407 After acquiring the IP address of the HA (PDN GW), the UE establishes a DSMIPv6 security association and a DSMIPv6 tunnel, where the PDN GW is the PDN GW to which the UE is connected in the evolved UTRAN before the handover, and therefore the handover anchor point is unchanged, and Achieved business continuity.
  • the PDN GW is the PDN GW to which the UE is connected in the evolved UTRAN before the handover, and therefore the handover anchor point is unchanged, and Achieved business continuity.
  • Embodiment 2 FIG.
  • FIG. 5 is a structural diagram of performing domain name query in a roaming scenario according to an embodiment of the present invention, in which other entities in the home location and the visited network architecture are omitted, and compared with FIG. 3, the visited VPLMN is added.
  • the interface needs to modify the interface between the existing different operators' DNS servers, and needs to increase the transfer of user identity information, for example, IMSI.
  • FIG. 6 is a flowchart of performing domain name query in a roaming scenario according to an embodiment of the present invention. The process shown in the figure is described based on the architecture shown in FIG. 5, in which the user has been connected through the evolved UTRAN.
  • the PDN GW is switched to the non-3GPP access network, and the request for the IP address of the home agent HA is initiated during the handover.
  • the PDN GW that the user has accessed may be the visited location or the home location.
  • the specific step 4 is as follows: Step 601: The UE sends a DNS query request to the VPLMN DNS Server of the visited place, where the query request carries the HA-APN and the user identity IMSI.
  • the UE sends the DNS query message to the VPLMN DNS Server of the visited site through the D1 interface, where the security and trust relationship need to be established between the UE and the VPLMN DNS Server.
  • the operator may pre-set some trusted VPLMN DNS servers in the UE.
  • the VPLMN DNS Server in the visited place is selected and interacts with these DNS servers.
  • Step 602 The VPLMN DNS Server determines that the user is a roaming user according to the difference between the mobile station country code MCC and the mobile station network code MNC in the IMSI and the MCC and the MNC. Therefore, the query is transmitted through the D3 interface.
  • the HPLMN DNS Server corresponding to the MCC and the MNC in the IMSI is forwarded.
  • Step 603 After receiving the above query, the HPLMN DNS Server removes the ha-apn part of the HA-APN and reserves the internet.mnc012.mcc345.pub. 3gppnetwork.org, that is, obtain the APN, send it and the user identity IMSI to the HSS through the D2 interface, and query the ID or IP address of the PDN GW of the user's internet service stored in the HSS.
  • the PDN GW in this step is HA for the UE, but is the PDN GW for the HSS, and actually refers to the same network element, and the IP address is also the same.
  • the access is the HA in the DSMIP protocol, and for the HSS, the IP address of the PDN GW is stored.
  • HPLMN DNS Server ⁇ ! The IP address of the obtained PDN GW is sent to the VPLMN DNS Server.
  • Step 606 VPLMN DNS Server ⁇ ! The IP address of the obtained PDN GW is sent to the UE.
  • Embodiment 3 The structure of the domain name query system in the mobile network is as shown in FIG. 5.
  • the system includes the user equipment UE, the domain name server DNS server, and the home subscriber server HSS.
  • the domain name server in the non-roaming scenario only includes the attribution.
  • the domain name server, and in the non-roaming scenario includes the visited domain name server and the home domain name server.
  • each module queries the IP address of the home agent HA through message interaction.
  • the components of the system are composed and functioned as follows:
  • the device UE is configured to initiate an IP address query of the home agent HA to the domain name server, and perform service switching after querying the IP address of the home agent HA to ensure continuity of the service.
  • the query request carries the user identity and the HA-APN.
  • the domain name server DNS server is configured to forward the query request of the UE to the HSS, and feed back the query result of the HSS feedback to the UE; if in the non-roaming scenario, the home network name server may be preset in the UE by the operator.
  • the UE directly interacts with the UE; in the roaming scenario, the visited domain name server can be set in the UE in advance by the operator, and the UE directly interacts with the UE; in the roaming scenario, the query request needs to be visited by the visited domain name server and the attribution
  • the domain name server forwards to the HSS, and the visited domain name server finds the corresponding home domain name server according to the user identity identifier IMSI in the query request, and forwards the query request to the home domain name server; the home domain name server receives the visited domain name
  • the server sends a query request and forwards it to the HSS.
  • the home subscriber server HSS is configured to search for the UE according to the query request
  • the IP address of the home agent HA corresponding to the service part of the HA-APN, and the query result is forwarded to the UE through the domain name server.
  • the query result is forwarded to the UE through the home domain name server and the visited domain name server.
  • a computer readable medium having stored thereon computer executable instructions, when executed by a computer or a processor, causing a computer or processor to execute as shown in FIG. 4 And the processing of each step shown in FIG. 6, preferably, one or more of the above-described Embodiments 1 to 3 can be performed.
  • the implementation of the present invention does not modify the system architecture and the current processing flow, is easy to implement, facilitates promotion in the technical field, and has strong industrial applicability.
  • the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

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

Abstract

La présente invention concerne un procédé et un système de recherche d'un nom de domaine dans un réseau mobile. Le procédé comprend les étapes suivantes : un équipement utilisateur (UE) transmet une requête d'interrogation permettant de demander une adresse de protocole Internet (IP) d'un agent d'accueil (HA) à un serveur de noms de domaine ; le serveur de nom de domaine demande l'adresse à un serveur d'abonnés d'accueil (HSS) et obtient l'adresse IP de l'agent d'accueil (HA) ; le serveur de domaine transmet l'adresse IP de l'agent d'accueil (HA) à l'UE. L’invention permet une accélération efficace du débit du service d'accès à un nœud mobile et la réduction du gaspillage des ressources réseau.
PCT/CN2009/075202 2009-07-22 2009-11-30 Procédé et système de recherche d'un nom de domaine dans un réseau mobile WO2011009253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910089750.XA CN101964968B (zh) 2009-07-22 2009-07-22 一种移动网络中域名查询的方法及系统
CN200910089750.X 2009-07-22

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WO2011009253A1 true WO2011009253A1 (fr) 2011-01-27

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CN102761935A (zh) * 2011-04-26 2012-10-31 中兴通讯股份有限公司 一种选择ePDG /PDN GW的方法、系统及UE
CN103312749B (zh) * 2012-03-13 2016-12-14 华为技术有限公司 一种应用层流量优化服务器的发现方法、设备及系统
CN104754559B (zh) * 2013-12-27 2019-01-08 中国移动通信集团公司 一种dns查询方法及网元
CN105635057B (zh) * 2014-10-30 2020-02-07 北京奇虎科技有限公司 域名解析系统dns的安全性识别方法和装置
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