WO2010108352A1 - Procédé d'envoi de politiques de réseau d'accès et unité à fonctions de découverte et de prise en charge de réseau d'accès nominal - Google Patents

Procédé d'envoi de politiques de réseau d'accès et unité à fonctions de découverte et de prise en charge de réseau d'accès nominal Download PDF

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Publication number
WO2010108352A1
WO2010108352A1 PCT/CN2009/073706 CN2009073706W WO2010108352A1 WO 2010108352 A1 WO2010108352 A1 WO 2010108352A1 CN 2009073706 W CN2009073706 W CN 2009073706W WO 2010108352 A1 WO2010108352 A1 WO 2010108352A1
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WIPO (PCT)
Prior art keywords
access network
visited
terminal
policy
message
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PCT/CN2009/073706
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English (en)
Chinese (zh)
Inventor
曲爱妍
朱春晖
宗在峰
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中兴通讯股份有限公司
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Publication of WO2010108352A1 publication Critical patent/WO2010108352A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • Access network policy sending method home access network
  • FIG. 1 is a schematic diagram of an evolved packet system (Evolved Packet System) and an access network architecture.
  • Evolved Packet System evolved packet system
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • the EPS of the cylinder is called 3GPP.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobility Management Entity
  • the EPS system supports interworking with a non-3GPP system.
  • the interworking with the non-3GPP system can be implemented through the S2a/b/c interface, and the 4 seed point between the 3GPP and the non-3GPP system is the P-GW.
  • Non-3GPP systems are classified into trusted non-3GPP IP access and untrusted non-3GPP IP access.
  • the trusted non-3GPP IP access can be directly connected to the P-GW through the S2a interface; the untrusted non-3GPP IP access needs to be connected to the P-GW through an Evolved Packet Data Gateway (evolved Packet Data Gateway), ePDG
  • Evolved Packet Data Gateway evolved Packet Data Gateway
  • the interface with the P-GW is an S2b interface.
  • the S2c interface provides user plane-related control and mobility support between the UE and the P-GW.
  • the supported mobility management protocol is dual IPv2 mobile IPv6 support (Moblie IPv6). Support for Dual Stack Hosts and Routers, called DSMIPv6).
  • DSMIPv6 Dual IPv2 mobile IPv6 support
  • the MME is responsible for the related operations of the control plane such as mobility management, non-access stratum signaling processing, and context management in the user mobility management
  • the S-GW is an access gateway device connected to the E-UTRAN, Forwarding data between E-UTRAN and P-GW, and responsible for buffering paging waiting data
  • P-GWB is an EPS and packet data network (Packet Data Network) A border gateway called PDN), which is responsible for PDN access and forwarding data between EPS and PDN.
  • PCRF is a policy and charging rule function entity. It receives the interface Rx and the carrier network (Internet Protocol, The cylinder is called IP). The service network is connected to obtain service information. It can also be connected to the gateway device in the network through the Gx/Gxa/Gxc interface.
  • the Access Network Discovery Support Functions is proposed in the Evolved Packet Core (EPC) of Rel-8.
  • EPC Evolved Packet Core
  • the EPS can be provided to the UE through the ANDSF. Access network information, select the appropriate access network according to its own situation.
  • ANDSF includes two functions: data management functions and control functions. ANDSF can provide network discovery and selection assistance data according to carrier policies.
  • the ANDSF mainly provides two kinds of information, namely, inter-system mobility policy information and access network discovery information.
  • the inter-system mobility policy can be hierarchical, for example, an unrestricted policy, a policy applied according to the UE's active state (for example, a UE activation state and a different policy in an idle state).
  • the access network discovery information is mainly an access network type (for example, WLAN, WiMAX), and an access network identifier (for example, a Service Set Identifier (SSID) in the WLAN), which is accessible.
  • PPN Public Land Mobile Network
  • the ANDSF may also limit the amount of information provided to the UE based on information such as the current location, capacity, and the like of the UE.
  • ANDSF can provide two kinds of information at the same time or only one of them.
  • the ANDSF can be discovered by the Domain Name System (DNS) function or the Dynamic Host Configuration Protocol (DHCP) function.
  • DNS Domain Name System
  • DHCP Dynamic Host Configuration Protocol
  • the address of the ANDSF can also be directly provided to the UE.
  • 2 is a schematic diagram of an ANDSF application scenario in the related art.
  • an ANDSF V-ANDSF, ie, visited ANDSF
  • S14 interface uses the Open Mobile Alliance Device Management (OBM) protocol.
  • OBM Open Mobile Alliance Device Management
  • the S14 interface supports PULL and PUSH modes.
  • the PULL mode is mainly that the UE actively applies to the network, and triggers the ANDSF to send network information to the UE.
  • the PUSH mode is mainly triggered by the network and sends data to the UE.
  • 3 is a signaling flowchart of an ANDSF operation in the related art. As shown in FIG. 3, the signaling process mainly includes the following processing (step 1 - step 6): Step 1: The UE accesses through a 3GPP access network or non-3GPP. The network accesses the EPC system. Step 2: The UE finds the ANDSF. Step 3: The UE sends an access network request message to the ANDSF, where the request carries UE capability information (UE Capabilities) and UE location information (UE Location).
  • UE Capabilities UE capability information
  • UE Location UE location information
  • Step 4 The ANDSF locates the location information on the UE, and sends an access network request response message to the UE, where the message carries the access network information (the available Access Network Info) and the latest system mobility policy available at the current location of the UE. Inter-system Mobility Policies).
  • Step 5 The UE performs network selection and handover decision.
  • Step 6 The UE initiates inter-system handover according to its own needs.
  • 4 is a schematic diagram of an ANDSF application scenario in a roaming scenario in the related art. As shown in FIG. 4, the UE is connected to the H-ANDSF (Home ANDSF) and V-ANDSF (Visit ANDSF) through two S14 interfaces.
  • the local policy H-ANDSF in the H-ANDSF and the V-ANDSF sends the relevant access network policy of the home roaming UE to the UE, and the V-ANDSF sends the related access network policy of the visited roaming UE to the UE. Since the access network policies of the UE are provided by the H-ANDSF and the V-ANDSF, respectively, the access network policies provided by the H-ANDSF and the V-ANDSF may be conflicting.
  • the present invention has been made in view of the related art that an access network policy provided by a H-ANDSF and a V-ANDSF to a terminal in a roaming scenario is likely to be a problem of collision.
  • the main object of the present invention is to provide a connection.
  • the network access policy is sent to solve the above problems in the related art.
  • an access network policy sending method is provided.
  • the access network policy sending method includes: the home access network discovery and selection function unit HANDSF receives the home access network request message sent by the terminal, where the home access network request message carries the visited network message flag bit The visited network message flag is used to identify whether the terminal is successful and completely receives the visited access network request response message; the HANDSF sends the access network policy to the terminal according to the visited network message flag.
  • the foregoing access network policy includes: access network information, and a system mobility policy.
  • the method further includes: the terminal sending a visited access network request message to the visited access network discovery and selection function unit VANDSF, wherein the visited access network request message And carrying the capability information of the terminal, the location information of the terminal, and the identifier of the public land mobile access network; the VANDSF sends a visit access network request response message to the terminal according to the capability information and the location information, where the visited access network request response message The access network information of the visited place where the VANDSF is located and the system mobility policy are carried in; the terminal receives the visited access network request response message, and sets the visited network message flag bit.
  • the terminal receives the visited access network request response message, and sets the visited network message flag bit to include: in the case that the terminal successfully and completely receives the visited access network request response message, the terminal will be in the home access network request message.
  • the visited network message flag is set to successfully receive the visited access network request response message; in the case that the terminal does not successfully receive the visited access network request response message, the terminal sets the visited network message flag bit in the home access network request message to The visited access network request response message was not successfully received.
  • the method further includes: determining, by the VANDSF, whether the public land mobile access network identifier is the same as the public land mobile access network identifier of the VANDSF local; When the VANDSF determines that the public land mobile access network identifier is the same as the public land mobile access network identifier of the VANDSF local, the access network policy sent to the terminal is a local policy; determining the public land mobile access network identifier in the VANDSF If the public land mobile access network identifiers of the VANDSF are different, the access network policy sent to the terminal is a roaming policy.
  • the home access network request message further carries capability information, location information, and a public land mobile access network identifier.
  • the HANDSF sends the home access network request response message to the terminal according to the visited network message flag bit: the HANDSF determines that the visited network message flag bit is successfully receiving the visited access.
  • the network requests a response message, and sends a home access network request response message to the terminal according to the location information, where the home access network request response message carries other visits where the current location of the terminal other than the visited network where the VANDSF is located is available.
  • the method further includes: the HANDSF determining whether the public land mobile access network identifier is the same as the public land mobile access network identifier of the HANDSF local;
  • the access network policy sent to the terminal is a local policy; and the public land mobile access network identifier is determined in the HANDSF
  • the access network policy sent to the terminal is a roaming policy.
  • the method further includes: the terminal performing network selection and handover decision according to the access network policy.
  • the determining, by the terminal, the network selection and the handover according to the access network policy comprises: when the terminal does not successfully receive the visited access network request response message, the terminal performs network selection and handover decision according to the access network policy sent by the HANDSF. In the case where the terminal successfully and completely receives the visit access network request response message, the terminal ⁇ !
  • the access network policy sent by HANDSF and the access network policy sent by VANDSF are merged into a basic policy, and network selection and handover decisions are made according to the basic policy.
  • a home access network discovery and selection function unit includes: a receiving module, configured to receive a home access network request message sent by the terminal, where the home access network request message carries a visited network message flag, and visits The network message flag is used to identify whether the terminal successfully and completely receives the visited access network request response message, and the sending module is configured to send the access network policy to the terminal according to the visited network message flag.
  • FIG. 1 is a schematic diagram of an EPS system and an access network architecture in the related art
  • FIG. 2 is a schematic diagram of an ANDSF application scenario in the related art
  • FIG. 3 is a signaling flowchart of an ANDSF operation in the related art
  • FIG. 5 is a signaling flowchart of a method for transmitting an access network policy according to an embodiment of the present invention
  • FIG. 6 is a signaling flowchart of a method 1 according to an embodiment of the present invention
  • 7 is a signaling flow diagram of Example 2 according to an embodiment of the present invention
  • FIG. 8 is a block diagram of a home access network discovery and selection function unit according to an embodiment of the present invention.
  • the HANDSF receives the home access network request message sent by the terminal, where the home access network request message carries the visited network message flag bit, and the visited network message flag The bit is used to identify whether the terminal successfully and completely receives the visited access network request response message; the HANDSF sends the access network policy to the terminal according to the visited network message flag.
  • FIG. 5 is a signaling flowchart of a method for sending an access network policy according to an embodiment of the present invention.
  • the process mainly includes the following processing (step S502 - step S518): Step S502, the UE accesses the EPC system through the 3GPP access network or the non-3GPP access network. Step S504, the UE sends a visit access network request message to the VANDSF, and the visited access network request message carries the UE capability information (UE Capabilities), the UE location information (UE Location), and the public land mobile access network identifier of the visited place. (VPLMNID).
  • UE Capabilities UE capability information
  • UE Location UE location information
  • VPLMNID public land mobile access network identifier of the visited place.
  • step S506 the VANDSF determines whether the VPLMNID of the UE is equal to the PLMNID of the VANDSF local. If not, the ij VANDSF determines the access network policy (including the access network information and the latest system mobility policy) to be delivered to the UE. It is a roaming policy; if they are equal, the VANDSF determines that the access network policy to be delivered to the UE is a local policy. Step S508, the VANDSF locates the location information and the capability information of the UE, and sends a visit access network request response message to the UE, where the message carries the access network information of the visited place where the VANDSF is located and the latest system mobility policy. Inter-system Mobility Policies).
  • Step S510 The UE determines, according to the received visited access network request response message, if the UE receives the information successfully and the obtained information is complete, the visited network message flag is set to 1 in the home access network request message, otherwise the visited network message is set.
  • the flag bit is 0, wherein the visited network message flag is used to identify whether the terminal is successful and completely receives the visited access network request response message. In this embodiment, preferably, "1" indicates successful and complete reception.
  • the access network request response message is visited, and "0" indicates that the visited access network request response message is not successfully received.
  • Step S512 The UE sends a home access network request message to the HANDSF, where the request message carries the visited network message flag, UE Capabilities, UE location information, and VPLMNID.
  • Step S514 the HANDSF determines whether the VPLMNID of the UE is equal to the PLMNID of the HANDSF local. If not equal, the ij HANDSF determines that the access network policy (including the access network information and the latest system mobility policy) to be delivered to the UE is a roaming policy; if equal, the HANDSF determines the access network to be delivered to the UE. The policy is a local policy. Step S516, the HANDSF determines the visited network message flag, and if the visited network message flag is 1 (ie, successfully and completely receives the visited access network request response message), the HANDSF sends according to the location information and capability information reported by the UE.
  • the access network policy including the access network information and the latest system mobility policy
  • the HANDSF sends a home access network request message response according to the location information and the capability information reported by the UE, where the message carries the access network information available to the current location of the UE (Available Access) Network Info) and updated Inter-system Mobility Policies.
  • the access network message and the updated system mobility policy include visited network information. Step S518, the UE performs network selection and handover decision.
  • FIG. 6 is a signaling flowchart of the first embodiment of the present invention. As shown in FIG.
  • the signaling process mainly includes the following processing (step S602 - step S612): Step S602, the UE interacts with the VANDSF to obtain a visited place. Accessing the network policy; Step S604, because the visited access network policy response message does not return, or visits the access network policy If the access network policy fails to be obtained due to incomplete response, the UE sets the visited network message identifier to 0. In step S606, the UE sends a home access network request message to the HANDSF, where the request carries the set to 0.
  • the visited network message flag is 1, and adds the policy of the visited place other than the visited place to the home access network message response.
  • Step S710 the HANDSF sends a home access network request response message to the UE;
  • Step S712 the UE directly sends the policy of the visited place sent by the VANDSF and the third party policy sent by the HANDSF Synthesizing as a basic strategy for local handover decision;
  • FIG. 8 is a block diagram of a home access network discovery and selection function unit according to an embodiment of the present invention, as shown in FIG.
  • the home access network discovery and selection function unit according to the embodiment of the present invention includes: a receiving module 80 and a sending module 82.
  • the receiving module 80 is configured to receive a home access network request message sent by the terminal, where the home access network request message carries the visited network message flag bit. Specifically, before the receiving module 80 is configured to receive the home access network request message sent by the terminal, the UE first needs to perform the determining according to the visited access network request response message sent by the received VANDSF, if the UE receives the request to successfully access the access network. In response to the message and the obtained information is complete, the visited network message flag is set to 1 in the home access network request message, otherwise the visited network message flag is set to 0, wherein the visited network message flag is used to identify whether the terminal is successful and The access access network request response message is completely received.
  • the HANDSF needs to determine whether the VPLMNID of the UE is equal to the PLMNID of the HANDSF. If not equal, the Bay's HANDSF determines the access network policy (including access network information, the latest system mobility policy) to be delivered to the UE as a roaming policy; if equal, The HANDSF determine ⁇ To access network policy issued by UE 1 is local policy. Subsequently, the HANDSF determines the visited network message flag.
  • the access network policy including access network information, the latest system mobility policy
  • the sending module 82 in the Bay 1 j HANDSF is based on the location reported by the UE.
  • the information and the capability information are sent to the UE home access network request response message, where the message carries the access network information of the visited network that is available to the terminal other than the visited network; if the visited network message flag is 0 (ie, the visit access network request response message is not successfully received), the sending module 82 in the HANDSF sends a home access network request message response according to the location information and capability information reported by the UE, where the message carries The available access network information (Available Access Network Info) and the updated system mobility policy (updated Inter-system Mobility Policies)cken The access network message and the updated system mobility policy include visited network information.
  • the message carries the visited network message flag, which solves the problem that the access network policies provided by the H-ANDSF and the V-ANDSF to the terminal in the roaming scenario are likely to have conflicts, so that the terminal can smoothly receive the received access.
  • the network policy performs access network selection and handover decisions.
  • the invention is not limited to any particular combination of hardware and software.
  • the above is only a preferred embodiment of the present invention.
  • the embodiments are not intended to limit the invention, and it will be apparent to those skilled in the art Various modifications and changes may be made to the invention. Any modifications, equivalents, improvements, etc. within the scope of the invention are intended to be included within the scope of the invention.

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

Abstract

L'invention porte sur un procédé d'envoi de politiques de réseau d'accès et sur une unité à fonctions de découverte et de prise en charge de réseau d'accès nominal. Le procédé comprend les opérations suivantes : l'unité à fonctions de découverte et de prise en charge de réseau d'accès nominal (H-ANDSF) reçoit un message de requête de réseau d'accès nominal envoyé par un terminal, un bit de marquage de message de réseau visité étant transporté dans le message de requête de réseau d'accès nominal, le bit de marquage de message de réseau visité étant utilisé pour indiquer si le terminal reçoit un message de réponse à une requête de réseau d'accès visité de façon réussie et intégralement ou non ; l'unité H-ANDSF envoie les politiques de réseau d'accès au terminal selon le bit de marquage de message de réseau visité. Le mode de réalisation susmentionné peut résoudre le problème selon lequel les politiques de réseau d'accès fournies par l'unité H-ANDSF entrent en conflit avec les politiques de réseau d'accès fournies par l'unité à fonctions de découverte et de prise en charge de réseau d'accès visité (V-ANDSF) dans la situation d'itinérance, de sorte que le terminal peut sélectionner et commuter le réseau d'accès avec succès conformément aux politiques de réseau d'accès reçues.
PCT/CN2009/073706 2009-03-24 2009-09-02 Procédé d'envoi de politiques de réseau d'accès et unité à fonctions de découverte et de prise en charge de réseau d'accès nominal WO2010108352A1 (fr)

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CN 200910127790 CN101730188B (zh) 2009-03-24 2009-03-24 接入网策略发送方法、归属接入网络发现和选择功能单元
CN200910127790.9 2009-03-24

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GB2509936A (en) * 2013-01-17 2014-07-23 Broadcom Corp Network selection

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CN104798414B (zh) * 2012-09-13 2018-10-19 华为技术有限公司 用于双模网络选择的系统及方法
US20140187252A1 (en) * 2012-12-27 2014-07-03 Vivek G. Gupta Distributed policy architecture
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WO2014153766A1 (fr) * 2013-03-29 2014-10-02 华为技术有限公司 Procédé de convergence de politiques, équipement utilisateur et serveur
CN105554753B (zh) * 2015-11-27 2019-01-04 北京博思汇众科技股份有限公司 移动通信网络接入系统及方法

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