WO2011109983A1 - Procédé de traitement de règle, fonction de découverte et de sélection de réseau d'accès et installation d'abonné - Google Patents

Procédé de traitement de règle, fonction de découverte et de sélection de réseau d'accès et installation d'abonné Download PDF

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Publication number
WO2011109983A1
WO2011109983A1 PCT/CN2010/075356 CN2010075356W WO2011109983A1 WO 2011109983 A1 WO2011109983 A1 WO 2011109983A1 CN 2010075356 W CN2010075356 W CN 2010075356W WO 2011109983 A1 WO2011109983 A1 WO 2011109983A1
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WIPO (PCT)
Prior art keywords
policy
information
policy information
andsf
different types
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PCT/CN2010/075356
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English (en)
Chinese (zh)
Inventor
周伟
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201080001865.XA priority Critical patent/CN102334360B/zh
Priority to PCT/CN2010/075356 priority patent/WO2011109983A1/fr
Publication of WO2011109983A1 publication Critical patent/WO2011109983A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present invention relates to a mobile communication technology, and in particular, to a policy processing method, an Access Network Discovery and Selection Function (ANDSF), and a User Equipment (UE). Background technique
  • ANDSF Access Network Discovery and Selection Function
  • UE User Equipment
  • the 3rd Generation Partnership Project (3GPP) network can also access the core network of the 3GPP's Evolved Packet System (EPS).
  • EPS Evolved Packet System
  • the operator can divide the non-3GPP network into trusted non-3GPP and untrusted non-3GPP according to different security levels of the network. For example, the non-3GPP network that the carrier considers to have a higher security level is trusted as non-3GPP, and the security level is lower.
  • the non-3GPP network is untrusted non-3GPP.
  • the UE directly connects to the Packet Data Network Gateway (PDN-GW) in the core network through the non-3GPP access network.
  • PDN-GW Packet Data Network Gateway
  • the UE needs to reconnect to the PDN-GW through an evolved packet data gateway (evolved PDG, ePDG) that is trusted by the home network.
  • ePDG evolved packet data gateway
  • an EPS network deployed by an operator supports access network access of multiple access types
  • the UE may according to a predetermined policy (eg, according to signal strength) Or the price factor) to select the appropriate wireless access technology and access network; on the other hand, the operator can recommend appropriate wireless access technology and connection according to the current network status (such as signal strength and network load).
  • a predetermined policy eg, according to signal strength
  • the price factor e.g., the amount of a predetermined policy
  • the operator can recommend appropriate wireless access technology and connection according to the current network status (such as signal strength and network load).
  • the current network status such as signal strength and network load
  • the ANDSF may be introduced in the 3GPP system, and the functional entity may formulate a set of mobile policies and provide the UE to the UE under the premise of comprehensive access network information and operator policies.
  • the UE selects a suitable target access network according to the policy provided by the ANDSF.
  • the mobile policy may be applied by the UE to the ANDSF, or may be The ANDSF actively sends it to the UE.
  • the UE can access the PDN-GW through the 3GPP network or the PDN-GW through the non-3GPP network.
  • the service flows in the same PDN connection may exist in the two access networks at the same time. Therefore, the ANDSF needs to send a routing policy to the UE based on the service granularity of the UE, so that the UE selects an appropriate access network according to the routing policy, and simultaneously connects to the UE.
  • the ANDSF also sends a mobility policy for the UE to enable the UE to select a suitable network according to the mobility policy.
  • the embodiment of the present invention provides a policy processing method, and the ANDSF and the UE are used to solve the problem that the UE cannot select a suitable access network caused by the conflict of policies issued by the ANDSF in the prior art, and the strategy is de-conflicted.
  • an embodiment of the present invention provides a policy processing method, including:
  • the policy information is de-conflicted.
  • an embodiment of the present invention provides a policy processing method, including:
  • the policy processing information is reported to the ANDSF, where the policy processing information includes a selection result of the UE, so that the ANDSF performs a de-colliding process on the conflicting policy information according to the policy processing information.
  • an embodiment of the present invention provides an ANDSF, including: a first sending module, configured to send different types of policy information to the UE, where the different types of policy information conflict;
  • the receiving module is configured to receive the policy processing information reported by the UE, where the policy processing information includes a selection result of the UE, and performs conflict resolution processing on the conflicting policy information according to the policy processing information.
  • an embodiment of the present invention provides a UE, including:
  • a receiving module configured to receive different types of policy information delivered by the ANDSF, where the different types of policy information conflict;
  • a first decision module configured to select an access network according to the different types of policy information
  • a sending module configured to report policy processing information to the ANDSF, where the policy processing information includes a selection result of the UE, so that the ANDSF De-conflicting the conflicting policy information according to the policy processing information.
  • FIG. 1 is a schematic flow chart of a method according to a first embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method according to a second embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a method according to a third embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a method according to a fourth embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an ANDSF according to a fifth embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a UE according to a sixth embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic flowchart of a method according to a first embodiment of the present invention, including:
  • Step 11 The ANDSF sends different types of policy information to the UE, where the different types of policy information conflict.
  • the different types of policy information include at least the mobile policy information and the routing policy information; the mobile policy information sent by the ANDSF may be to notify the UE to select according to information such as signal strength or location, and the routing policy information may be a notification.
  • the UE selects according to the service type, and the UE can select an appropriate access network according to the mobility policy information. For example, the UE selects a suitable target access network according to the location information during handover; the UE may also select a suitable network according to the routing policy, for example, the UE is in the UE.
  • a suitable access network is selected as a traffic distribution network according to different services.
  • the mobility policy and routing policy information delivered by the ANDSF are shown in Table 1.
  • the mobile policy In the delivered policy, there may be a conflict between the mobile policy information and the routing policy information. As shown in Table 1, when the UE is in the A area and the FTP service is running, the mobile policy will access WLAN1 according to the sequence number 1, and the UE will access the WLAN2 according to the sequence number 3 routing policy when the UE performs the FTP service in the A area. Conflicts between different policy types. In this case, due to the inconsistency between different policy type information, the UE cannot determine that the mobile policy information is performed. Selecting, or selecting according to routing policy information, causes the UE to not select a suitable radio access technology.
  • the policy type priority may be carried in the different types of policy information that is delivered, for example, the priority of the mobile policy information is set to be higher than the priority of the routing policy information, and the UE is The access network is selected according to the policy recommended by the mobile policy information, and the determined policy processing information is sent to the ANDSF.
  • the UE determines the selected policy information of the UE according to the preset configuration, and sends the determined policy processing information to the ANDSF, or the UE randomly selects a policy according to the network status of the UE or the like. After the access, the pre-selection result and the conflict condition are reported to the ANDSF, so that the ANDSF de-conflicts the conflicting policy information.
  • Step 12 The ANDSF receives the policy processing information reported by the UE, where the policy processing information includes a selection result of the UE, and performs conflict resolution processing on the conflicting policy information according to the policy processing information.
  • the policy processing information of the UE may be reported to the ANDSF, where the policy processing information may include the selection result of the UE. Further, the policy processing information may further include: Policy type conflict condition and current network status information of the UE.
  • the selection result of the UE may be an access network selected by the UE, or may be policy information selected by the UE.
  • the ANDSF may perform conflict resolution processing on the conflicting policy information according to the policy processing information, that is, re-adjust different types of policy information, so that various types of policy information are consistent, for example, when The selection result of the UE is selected according to the mobility policy, and the ANDSF adjusts the routing policy to be consistent with the mobile policy.
  • the routing policy of the UE is modified on the ANDSF: The FTP service of the UE is accessed by using WLAN1. Specifically, if the area covered by the ANDSF has only one mobility policy, the routing policy of the UE may be directly modified to the same policy as the mobile policy, if the area covered by the ANDSF has multiple mobility policies, such as in the A area.
  • the mobility policy is WLAN1, then the routing policy of the UE in the A area is repaired. Change to WLAN1 and so on.
  • the routing policy sent by the ANDSF to the UE is WLAN1 access.
  • the ANDSF performs de-collision processing according to the policy processing information, and sends the de-conflicted policy information to After receiving the de-conflicted policy information, the UE selects an appropriate access network to perform services, such as performing a handover operation, or performing services such as IFOM.
  • the ANDSF performs de-collision processing according to the policy processing information, including:
  • the ANDSF determines whether the policy processing information reported by the UE is appropriate, and if appropriate, the ANDSF allows the UE to use WLAN1 access in the A area, regardless of the service, according to the policy processing information reported by the UE, the conflicting policy
  • the information is de-collided, for example, the policy information of the UE is adjusted to be accessed by using the WLAN1; or, if it is not suitable, for example, when the UE performs the FTP service, the ANDSF only allows the FTP service to access the WLAN 2, according to its configuration.
  • the conflicting policy information is subjected to de-collision processing, such as adjusting the UE's policy information to adopt WLAN2 access.
  • the UE does not conflict with the policy information when the policy information is sent, so that the UE can select the appropriate access network.
  • FIG. 2 is a schematic flowchart of a method according to a second embodiment of the present invention, including:
  • Step 21 The UE receives different types of policy information delivered by the ANDSF, and the different types of policy information have conflicts.
  • different types of policy information may include mobile policy information and routing policy information, and the mobile policy information and routing policy information may be in conflict.
  • Step 22 The UE selects an access network according to the policy information.
  • ANDSF When the policy information is sent, the policy type priority is respectively carried in the different types of policy information, and then the UE selects the access network according to the policy information with the high priority of the policy type;
  • the policy type priority may not be carried in the different types of policy information.
  • the UE finds that the policy information conflicts with each other. For example, refer to Table 1.
  • the UE is in the A area and runs.
  • the ANDSF sends the mobility policy with sequence number 1 and the routing policy with sequence number 3
  • the UE finds that the mobility policy according to sequence number 1 will access WLAN1, and the routing policy according to sequence number 3 will access WLAN2.
  • a conflict has arisen between different policy types.
  • the pre-selection is performed first.
  • the UE randomly selects a policy information according to its own network status or the like, selects an access network according to the policy information, and then reports the pre-selection result and the conflict condition to the ANDSF, so that the ANDSF pair Conflicting policy information is de-conflicted.
  • the UE may select an appropriate policy information according to the pre-configuration and select a suitable access network according to the policy information.
  • Step 23 The UE reports the policy processing information to the ANDSF, where the policy processing information carries the selection result of the UE, so that the ANDSF performs the conflict resolution processing on the conflicting policy information according to the policy processing information.
  • the ANDSF performs the de-collision processing on the conflicting policy information according to the policy processing information, including adjusting the conflicting policy information on the ANDSF, for example, when the UE is selected according to the mobile policy information,
  • the routing policy information is adjusted to be consistent with the mobile policy information.
  • the routing policy of the UE is modified on the ANDSF as follows:
  • the FTP service of the UE is accessed by WLAN1.
  • the routing policy of the UE may be directly modified to the same policy as the mobile policy, if the area covered by the ANDSF has multiple mobility policies, such as in the A area.
  • the mobility policy is WLAN1, and the routing policy of the UE in the A area is modified to WLAN1 and the like.
  • the UE may perform services through the selected access network, such as performing handover, or performing IFOM, or After the selected access network is selected, the service is not executed, and only the selected result is reported to the ANDSF.
  • step 22 the UE selects the access network, the service is not executed, and only the selected result is reported to the ANDSF.
  • the ANDSF performs the de-collision processing according to the policy processing information, and the conflict is resolved.
  • the policy information is sent to the UE.
  • the UE selects an appropriate access network to perform services, such as performing handover, or performing services such as IFOM.
  • the ANDSF performs de-collision processing according to the policy processing information, including:
  • the ANDSF determines whether the policy processing information reported by the UE is appropriate, and if appropriate, performs conflict resolution processing on the conflicting policy information according to the policy processing information reported by the UE; or, if not, according to its own configuration Conflicting policy information is de-conflicted.
  • the ANDSF can perform the de-collision processing according to the policy processing information, and avoid the problem that the UE cannot select a suitable radio access network caused by the policy information of the ANDSF sending the conflict.
  • FIG. 3 is a schematic flowchart of a method according to a third embodiment of the present invention. This example takes the priority of a policy type in different types of policy information as an example. Referring to FIG. 3, this embodiment includes:
  • Step 31 The UE establishes a secure connection with the ANDSF.
  • the UE When an ANDSF entity exists in a 3GPP network, and the UE supports the ANDSF discovery function, if the UE moves to a network with multiple radio access technologies, the UE generally selects an appropriate target access network. ANDSF discovery process.
  • the address of the ANDSF network element can be carried by the query option in the Dynamic Host Configuration Protocol (DHCP) protocol to provide the information of the ANDSF and the security parameters of the application layer authentication. After obtaining the information, the UE can establish a secure connection with the ANDSF to protect the related policy data transmission.
  • DHCP Dynamic Host Configuration Protocol
  • Step 32 The UE sends a policy request message to the ANDSF.
  • This step is optional, that is, when the UE actively requests the related policy, the step needs to be performed, In the scenario where the ANDSF actively delivers the policy, this step does not need to be performed.
  • Step 33 The ANDSF sends the mobility policy information to the UE, where the mobility policy information includes the policy type priority of the policy type.
  • the ANDSF After receiving the policy request message, the ANDSF sends an inter-system mobility policy to the UE, or the ANDSF periodically sends an inter-system mobility policy to the UE. Whether the policy information is requested by the UE or the policy information is actively sent by the ANDSF may be determined by the operator. In addition to the policy content and policy availability criteria, these policies can also include policy type priority PolicyTypePriority information.
  • the policy type priority information is used to indicate the priority relationship between different types of policy information, and can be used when there are conflicts between different types of policy information. For example, the priority of the mobile policy information can be set to be higher than the priority of the routing policy information.
  • Step 34 The ANDSF sends routing policy information to the UE, where the routing policy information includes a policy type priority.
  • the routing policy may also be requested from the ANDSF.
  • the ANDSF After receiving the request from the UE, the ANDSF will send a routing policy to the UE.
  • the routing policy information will also contain the priority PolicyTypePriority information of the policy type. Taking the existing mobile policy and routing policy as an example, the priority carried in the mobile policy information is higher than the priority carried in the routing policy information.
  • Step 35 The UE makes a decision and selects an access network.
  • the UE selects an appropriate radio access technology and access network according to factors such as the mobility policy information and the routing policy information including the priority of the policy type, and the network state information currently in which the UE is located.
  • the appropriate policy information may be determined according to the policy type priority.
  • the policy information provided by the ANDSF includes not only the mobile policy and the routing policy
  • the policy type priority can also be used to make decisions on different types of policy information.
  • the final access technology selection policy is also made by the UE.
  • the UE will also consider the current network state information to select a suitable access network.
  • Step 36 The UE sends the policy processing information to the ANDSF.
  • the ANDSF After the UE determines that the appropriate access network is selected, some factors in the decision may be reported to the ANDSF.
  • the reported content includes the conflict situation encountered, the status information of the current network, and the final decision result of the UE.
  • the ANDSF can de-conflict the conflicting policy information, so that the policy information is adjusted and optimized. For example, when the priority of the mobility policy is higher than the routing policy, the ANDSF adjusts the routing policy to: WLAN1 is used when performing FTP services in area A.
  • Step 37 The UE starts an inter-system handover or a flow handover.
  • the UE may start performing the inter-system handover or the flow switching process.
  • the conflict between different types of policy information can be solved, and the UE can be selected to select an appropriate access network.
  • the UE can implement the policy de-collision on the ANDSF, improve the accuracy of the UE decision, and can add the related information of the UE to the ANDSF policy generation, and improve the ANDSF. Provide the effectiveness of the strategy.
  • Step 41 The UE establishes a secure connection with the ANDSF.
  • step 31 For details, see step 31.
  • Step 42 The UE sends a policy request message to the ANDSF.
  • step 32 For details, see step 32.
  • Step 43 The ANDSF sends the mobile policy information to the UE, where the mobile policy information includes the policy type priority.
  • Step 44 The ANDSF sends routing policy information to the UE, where the routing policy information includes a policy type priority.
  • step 34 For details, see step 34.
  • Step 45 The UE makes a pre-decision.
  • the UE may pre-select a suitable radio access technology and the access network according to factors such as the mobility policy information and the routing policy information including the policy type priority, and the network status information currently being used by the UE.
  • the appropriate policy information may be determined according to the policy type priority.
  • the policy type priority can also be used to make decisions on different types of policy information.
  • the final access technology selection strategy is also made by the UE.
  • the UE will also consider the current network status information to select a suitable access network.
  • Step 46 The UE sends the policy processing information to the ANDSF.
  • the UE may report some factors of the pre-decision to the ANDSF.
  • the reported content includes the conflict situation encountered, the status information of the current network, and the final decision result of the UE.
  • the ANDSF can adjust and optimize the policy information.
  • Step 47 The ANDSF sends the conflicting mobile policy information and routing policy information to the UE. After receiving the policy processing information, the ANDSF may perform the conflict resolution process on the conflicting policy information, and then send the de-conflicted policy information to the UE. As shown in Table 1, the mobile policy will be de-conflicted: In the A area, when WLAN1 is used, and the routing policy: FTP service, WLAN1 is used and sent to the UE.
  • the ANDSF may determine whether the policy information selected by the UE is suitable according to the preset setting. For example, if the FTP service can be accessed by using the WLAN1, the ANDSF determines that the policy information selected by the UE is appropriate, and the ANDSF performs the disambiguation according to the policy information reported by the UE. Processing; if based on The first setting is to confirm that the FTP service cannot be accessed by using WLAN1 and can only be accessed by using WLAN2. The ANDSF performs de-collision processing according to the pre-configuration information, and sends the policy information after the conflict resolution processing to the UE.
  • Step 48 The UE performs a decision according to the de-conflicted policy information, and selects an access network.
  • the UE may make a final decision according to the de-conflicting policy information and the current network state information, and select a suitable access network.
  • Step 49 The UE starts an intersystem handover or a flow handover.
  • the UE performs inter-system handover or flow switching according to the decision result of step 48.
  • the UE by carrying the policy type priority in each type of policy information, the conflict between different types of policy information can be solved, and the UE can be selected to select an appropriate access network.
  • the UE by reporting the policy processing information to the ANDSF, the UE can implement the policy de-collision on the ANDSF, improve the accuracy of the UE decision, and can add the related information of the UE to the ANDSF policy generation, and improve the ANDSF. Provide the effectiveness of the strategy.
  • the present embodiment can further ensure the accuracy of the selection through two steps of pre-decision and decision making.
  • FIG. 5 is a schematic structural diagram of an ANDSF according to a fifth embodiment of the present invention, including a first sending module 51 and a receiving module 52.
  • the first sending module 51 is configured to send different types of policy information to the UE, where different types of policy information exist.
  • the receiving module 52 is configured to receive the policy processing information reported by the UE, where the policy processing information includes a selection result of the UE, and performs conflict resolution processing on the conflicting policy information according to the policy processing information.
  • the policy type priorities are respectively included in the different types of policy information.
  • the different types of policy information include mobile policy information and routing policy information, and the priority of the mobile policy information is higher than the priority of the routing policy information.
  • the receiving module 52 of the embodiment may be specifically configured to receive the policy processing information reported by the UE, where the policy processing information includes a selection result of the UE, and determines whether the policy processing information reported by the UE is appropriate, if appropriate And performing conflict resolution processing on the conflicting policy information according to the policy processing information reported by the UE; or, if not, according to its own Set conflicting policy information to resolve the conflict.
  • the ANDSF of this embodiment may further include a second sending module 53, where the second sending module 53 is configured to send the de-conflicted policy information to the UE, so that the UE selects the access according to the de-conflicted policy information.
  • the second sending module 53 is configured to send the de-conflicted policy information to the UE, so that the UE selects the access according to the de-conflicted policy information.
  • the UE does not conflict with the policy information when the policy information is sent, so that the UE can select the appropriate access network.
  • FIG. 6 is a schematic structural diagram of a UE according to a sixth embodiment of the present invention, including a receiving module 61, a first determining module 62, and a sending module 63.
  • the receiving module 61 is configured to receive different types of policy information delivered by the ANDSF, and the different types.
  • the policy information is used to select an access network according to the different types of policy information.
  • the sending module 63 is configured to report policy processing information to the ANDSF, where the policy processing information includes the UE selection. As a result, the ANDSF performs de-colliding processing on the conflicting policy information according to the policy processing information.
  • the policy type priorities are respectively included in the different types of policy information.
  • the different types of policy information include mobile policy information and routing policy information, and the priority of the mobile policy information is higher than the priority of the routing policy information.
  • the first decision module 62 may be specifically configured to select an access network corresponding to the high priority high policy information according to the policy type priority, and the first decision module 62 may be specific.
  • the different types of policy information include the mobile policy information and the routing policy information, where the priority of the mobile policy information is higher than the priority of the routing policy information, the access network corresponding to the mobile policy information is selected; or, A decision module 62 can be specifically configured to select an access network corresponding to a policy information according to a preset setting, a network condition of the user, or a random selection.
  • the UE in this embodiment may further include a second decision module 64, where the second decision module 64 is configured to receive the de-conflicted policy information sent by the ANDSF, and select according to the de-conflicted policy information. Access the network to perform business.
  • the ANDSF by reporting the policy processing information to the ANDSF, the ANDSF can perform the de-collision processing according to the policy processing information, and avoid the problem that the UE cannot select a suitable radio access network caused by the policy information of the ANDSF sending the conflict.

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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 concerne un procédé de traitement de règle, une fonction de découverte et de sélection de réseau d'accès (ANDSF) et une installation d'abonné (UE). Le procédé comprend les étapes consistant à: envoyer à l'UE divers types de données de règle relatives à une collision potentielle; recevoir de l'UE des données de traitement de règle qui contiennent les résultats choisis par l'UE, et éliminer la collision potentielle entre les données de règle relatives à une collision selon les données de traitement de règle.
PCT/CN2010/075356 2010-07-21 2010-07-21 Procédé de traitement de règle, fonction de découverte et de sélection de réseau d'accès et installation d'abonné WO2011109983A1 (fr)

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CN201080001865.XA CN102334360B (zh) 2010-07-21 2010-07-21 策略处理方法、andsf和ue
PCT/CN2010/075356 WO2011109983A1 (fr) 2010-07-21 2010-07-21 Procédé de traitement de règle, fonction de découverte et de sélection de réseau d'accès et installation d'abonné

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