WO2016155277A1 - Procédé, élément de réseau fédérateur, équipement utilisateur et système permettant de prendre une décision d'itinéraire par défaut - Google Patents

Procédé, élément de réseau fédérateur, équipement utilisateur et système permettant de prendre une décision d'itinéraire par défaut Download PDF

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Publication number
WO2016155277A1
WO2016155277A1 PCT/CN2015/091132 CN2015091132W WO2016155277A1 WO 2016155277 A1 WO2016155277 A1 WO 2016155277A1 CN 2015091132 W CN2015091132 W CN 2015091132W WO 2016155277 A1 WO2016155277 A1 WO 2016155277A1
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Prior art keywords
default route
network element
core network
decision
default
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English (en)
Chinese (zh)
Inventor
周星月
苏翠斯
周晓云
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update

Definitions

  • This application relates to, but is not limited to, IP traffic flow processing techniques.
  • WLAN wireless local area network
  • EPS Evolved Packet System
  • 3GPP 3rd Generation Partnership Project
  • Non-3GPP networks include trusted non-3GPP networks and untrusted non-3GPP networks.
  • Protocol IP access interconnected between networks that can trust non-3GPP networks can interface directly with Packet Data Network-Gateway (P-GW) through S2a; IP access for untrusted non-3GPP networks requires evolved data gateways (ePDG)
  • ePDG evolved data gateways
  • the Evolved Packet Data Gateway is connected to the P-GW, and the ePDG and the P-GW are connected through the interface S2b.
  • 3GPP regards WLAN as a non-3GPP access network, which is divided into Trusted WLAN access network (TWAN) and Untrusted WLAN access network (TWAN).
  • TWAN Trusted WLAN access network
  • TWAN Trusted WLAN access network
  • TWAN Trusted WLAN access network
  • TWAN Untrusted WLAN access network
  • - GW's S2aGTP/PMIPv6 interface S2aGTP/PMIPv6 interface.
  • the user equipment establishes a running packet data network (PDN) connection in three modes: the first one is a transparent single connection mode, that is, the 11R version (Rel-11, Release 11) supports The WLAN accessing the 4G core network (EPC) that has no impact on the user equipment, the UE can only establish a single packet data connection through the WLAN network, and does not support the UE to switch the packet data connection between the WLAN access network and the 3GPP access network.
  • PDN packet data network
  • the data connection may be a packet data connection to the EPC, or a NSW-seamless WLAN offload connection directly connected to the data network from the WLAN network;
  • the second is a single connection mode, and the mode supports The UE establishes a connection on the TWAN but only supports establishing a single PDN connection, and supports switching of the packet data network connection between the WLAN and the 3GPP;
  • the third is a multi-connection mode, which supports the UE to establish multiple PDN connections on the TWAN, and Support in WLAN and 3GPP Switching between packet data network connections.
  • the IFOM (IP Flow Mobility) technology can implement the migration of IP service flows between different access systems.
  • the UE can modify the service flow routing path according to the network congestion status and policies to ensure communication quality and improve user experience.
  • 1 is a schematic diagram of a flow migration principle. As shown in FIG.
  • FIG. 2 is a schematic diagram of the flow migration principle after the web traffic is successfully migrated. As shown in FIG. 2, the path of the web service flow is changed to be transmitted in the
  • IFOM is divided into: host-based mobility management protocols based on the types of mobility management protocols used by users, such as IFOM and network-based mobility management based on Dual-Stack Mobile IPv6 (DSMIPv6).
  • Network-based IP flow mobility such as tunnel-based protocol or proxy mobile IPv6 protocol (for example, GPRS Tunneling Protocol (GTP) or proxy mobile IPv6 protocol (PMIPv6GPRS, Proxy Mobile) IPv6) stream migration.
  • GTP GPRS Tunneling Protocol
  • PMIPv6GPRS proxy mobile IPv6 protocol
  • Proxy Mobile IPv6 Proxy Mobile IPv6
  • the IFOM scheme based on DSMIPv6 is already supported by 3GPP.
  • the UE and the network negotiate IFOM information through DSMIPv6 signaling. After the signaling negotiation, the UE and the network pair corresponding IFOM routing rules. The information is modified and updated.
  • the initiation of the IFOM based on DSMIPv6 is performed by the UE side; the UE can simultaneously access the same P through the 3GPP access network and the non-3GPP access network (such as the WLAN access network).
  • the P-GW allocates an IP address to the UE, and the allocated IP address is used on both the 3GPP network and the non-3GPP network, supporting the service data flow in the 3GPP network and the non-3GPP network.
  • the migration between the networks for example, during the UE accessing the 3GPP network and the non-3GPP network, the UE is not in the coverage area of the non-3GPP network after the mobile is moved, but is still in the coverage area of the 3GPP network, and may pass the non-3GPP.
  • the network access service is migrated to the 3GPP network; or when the non-3GPP network is congested, the UE can migrate the service with high real-time requirements to the 3GPP network.
  • 3GPP is studying the flow migration supporting NB-IFOM; specifically, the UE establishes a PDN connection supporting the flow migration in the EPC through the 3GPP network and the non-3GPP network (for example, WLAN) by using the GTP/PMIPv6, that is, the multi-access packet data network.
  • a multi-access PDN connection establishes a PDN connection that allocates the same IP address on the 3GPP network and the non-3GPP network, and the IP stream migration policy can be updated between the UE and the network, on the 3GPP network and the non-3GPP network.
  • the UE notifies the network that the currently established connection is established for the NB-IFOM.
  • the NB-IFOM indication is returned to the UE.
  • the update of the NB-IFOM policy such as adding, deleting, or modifying, may be initiated by the UE side or by the network side.
  • the scenario in which the IFOM is initiated by the UE side includes: the UE initiates a flow migration request to the network according to the IFOM update policy provided by the Access Network Discovery and Selection Function (ANDSF), and the UE senses the change of the air interface environment at the first time.
  • ANDSF Access Network Discovery and Selection Function
  • the scenario in which the network side initiates the IFOM includes: the network side initiates a flow migration request according to the operator's pre-configured policy, and the operator according to the network side current The congestion situation updates the IFOM policy, initiates a stream migration request, and so on.
  • the path of the IP packet is determined by the routing rule.
  • the routing rule such as IP address, Transmission Control Protocol/User Datagram Protocol (TCP/UDP)
  • TCP/UDP Transmission Control Protocol/User Datagram Protocol
  • the IP packet is received and sent according to the access network indicated by the routing rule (such as 3GPP or WLAN). If the IP packet does not match the routing rule, the IP packet must be sent and received according to the path indicated by the default routing rule. However, how to decide the default route has not been resolved in NB-IFOM.
  • This document provides a method for implementing default route decisions, a core network element, a user equipment, and a system, and can determine a default route.
  • a method of implementing default routing decisions including:
  • the core network element determines the default route according to the default route pre-configured by the user equipment UE;
  • the core network element notifies the UE of the default route of the decision as the default route of the flow migration.
  • the pre-configured default route is: a default route configured by the operator or the user for the UE.
  • the default route of the core network element decision includes:
  • the pre-configured default route is used as the default route for decision; the pre-configuration is not accepted.
  • the default route is used as the default route for the decision.
  • the method further includes: the core network element receiving the default route pre-configured by the UE sent by the UE.
  • the method further includes:
  • the core network element indicates the default route to the UE as the default route for decision.
  • the core network element indicating the default route to the UE includes:
  • the core network element indicates a default route to the UE according to the network configuration or the subscription information of the user.
  • the method further includes:
  • the core network element determines to update the default route according to the routing policy and/or the routing configuration of the access network, the core network element sends an updated default route to the UE, so that the UE is based on the updated default route. Update the default route of the current stream migration.
  • the access network is a third generation partnership plan 3GPP access network or a wireless local area network WLAN access network;
  • the core network element is a network element of a 3GPP core network.
  • the method further includes: setting the rule of the default route is valid when the packet data network PDN connection established by the access network involved in the flow migration is in an active state.
  • the core network element includes at least one of the following network elements: dynamic policy and charging rule control PCRF, packet data network gateway PDN GW, home subscriber server HSS, 3GPP authentication, authorization, accounting AAA, and access Network discovery and selection function ANDSF.
  • PCRF dynamic policy and charging rule control
  • PDN GW packet data network gateway
  • HSS home subscriber server
  • 3GPP authentication, authorization, accounting AAA and access Network discovery and selection function ANDSF.
  • a method of implementing default routing decisions including:
  • the UE sends a pre-configured default route to the core network element, so that the core network element determines the default route according to the default route preset by the UE.
  • the UE receives the default route determined by the core network element as the default route of the flow migration.
  • the method further includes:
  • the default route of the current flow migration is updated according to the updated default route.
  • a core network element for implementing a default routing decision includes: a decision unit and a decision notification unit; wherein
  • a decision unit configured to: determine a default route according to a default route pre-configured by the user equipment UE;
  • the decision notification unit is configured to: notify the UE of the default route of the decision as the default route of the flow migration.
  • the core network element further includes a receiving unit, configured to: receive a preset route pre-configured by the UE sent by the UE.
  • the decision unit is set to,
  • the pre-configured default route is accepted according to the routing policy and/or the route configuration of the access network, the pre-configured default route is used as the default route for decision; the pre-configured default route is not accepted.
  • the default route is pre-determined as the default route for the decision.
  • the decision unit is further configured to
  • the UE When the core network element does not receive the UE pre-configuring the default route, the UE is indicated to the default route as the default route of the decision.
  • the decision unit is further configured to
  • the UE When the core network element does not receive the preset route, the UE indicates the default route as the default route of the decision according to the network configuration or the subscription information of the user.
  • the core network element further includes an update unit, configured to
  • the UE sends The updated default route is sent, so that the UE updates the default route of the current stream migration according to the updated default route.
  • the access network is a 3GPP access network or a WLAN access network
  • the core network element is a core network element of the 3GPP access network.
  • the core network element includes at least one of the following network elements: a PCRF, a PDN GW, an HSS, a 3GPP AAA, and an ANDSF.
  • a user equipment for implementing a default routing decision includes: a sending unit and a receiving unit;
  • the sending unit is configured to: send a pre-configured default route to the core network element, so that the core network element determines a default route according to the default route preset by the UE;
  • the receiving unit is configured to: receive a default route determined by the core network element as the default route of the flow migration.
  • the user equipment further includes an update routing unit, configured to: when receiving the updated default route to the core network element, update the default route of the current flow migration according to the updated default route.
  • a system for implementing a default routing decision includes: a core network element and a user equipment, where the core network element includes: a decision unit and a decision notification unit,
  • a decision unit configured to: determine a default route according to a default route pre-configured by the user equipment UE;
  • the decision notification unit is configured to: notify the UE of the default route of the decision as the default route of the flow migration;
  • the user equipment includes: a sending unit and a receiving unit; wherein
  • the sending unit is configured to: send a pre-configured default route to the core network element;
  • the receiving unit is configured to: receive a default route determined by the core network element as the default route of the flow migration.
  • a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the technical solution of the present application includes: the core network element determines the default route according to the default route pre-configured by the user equipment UE; and the core network element notifies the UE of the default route of the decision as the flow migration defect.
  • the method of the embodiment of the present invention determines a default route by using a default route pre-configured by the core network element according to the UE.
  • the default route pre-configured by the UE is not received, the default route is indicated to the UE, and the default is implemented. Routing decisions.
  • Figure 1 is a schematic diagram of the principle of flow migration
  • FIG. 2 is a schematic diagram of a flow migration principle after a successful migration of a web stream
  • FIG. 3 is a flowchart of a method for implementing a default route decision according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for implementing a default route decision according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a core network element that implements a default routing decision according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of a user equipment that implements a default routing decision according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of TWAN access to an EPC network deployment
  • Figure 8 is a flowchart of a method according to a first embodiment of the present invention.
  • Figure 9 is a flow chart of a method according to a second embodiment of the present invention.
  • Figure 10 is a flowchart of a method according to a third embodiment of the present invention.
  • Figure 11 is a flowchart of a method according to a fourth embodiment of the present invention.
  • Figure 12 is a flowchart of a method according to a fifth embodiment of the present invention.
  • Figure 13 is a flowchart of a method according to a sixth embodiment of the present invention.
  • Figure 14 is a flowchart of a method according to a seventh embodiment of the present invention.
  • Figure 15 is a flowchart of a method according to an eighth embodiment of the present invention.
  • Figure 16 is a flow chart of a method of a ninth embodiment of the present invention.
  • Figure 17 is a flow chart of a method of a tenth embodiment of the present invention.
  • Figure 18 is a flow chart showing the method of the eleventh embodiment of the present invention.
  • Figure 19 is a flow chart of the method of the twelfth embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for implementing a default route decision according to an embodiment of the present invention. As shown in FIG. 3, when a packet network (PDN) connection is established in an access network, the method includes:
  • Step 300 The core network element determines a default route according to a default route pre-configured by the user equipment UE.
  • the default route configured in advance is the default route configured by the carrier or user for the UE.
  • the default route of the core network element decision includes:
  • the pre-configured default route is used as the default route for decision; the pre-configuration is not accepted.
  • the default route is used as the default route for the decision.
  • the predetermined default route refers to one or one of the network side, and the default route determined by the network element according to the operator policy, the routing policy, and the like.
  • the method of the embodiment of the present invention further includes: the core network element receives the default route pre-configured by the UE sent by the UE.
  • the method of the embodiment of the present invention further includes:
  • the core network element indicates the default route to the UE as the default route for decision.
  • the default network route indicated by the core network element to the UE as the default route may include: the core network element indicates the default route to the UE according to the network configuration or the subscription information of the user.
  • Step 301 The core network element notifies the UE of the default route of the decision as the default route of the flow migration.
  • the core network element determines to update the default route according to the routing policy and/or the route configuration of the access network, the core network element sends an updated default route to the UE, so that the UE migrates the current flow according to the updated default route.
  • the default route is updated.
  • the access network is a third generation partnership project (3GPP) access network or a wireless local area network (WLAN) access network;
  • 3GPP third generation partnership project
  • WLAN wireless local area network
  • the core network element is the core network element of the 3GPP access network.
  • the method of the embodiment of the present invention further includes: setting the rule of the default route is valid when the PDN connection established by the access network involved in the flow migration is in an active state.
  • the core network element includes at least one of the following network elements: Dynamic Policy and Charging Rules Control (PCRF), and/or Packet Data Network Gateway (PDN GW), and/or Home Subscriber Server (HSS), and/or 3GPP authentication. , Authorization and Accounting (AAA), and/or Access Network Discovery and Selection (ANDSF).
  • PCRF Dynamic Policy and Charging Rules Control
  • PDN GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • 3GPP authentication et Access Network Gateway
  • AAA Authorization and Accounting
  • ANDSF Access Network Discovery and Selection
  • FIG. 4 is a flowchart of another method for implementing a default route decision according to an embodiment of the present invention. As shown in FIG. 4, the method includes:
  • Step 400 The UE sends a pre-configured default route to the core network element, so that the core network element performs a default route according to the default routing policy pre-configured by the UE.
  • Step 401 The UE receives a default route determined by the core network element as a default route of the flow migration.
  • the default route of the current flow migration is updated according to the updated default route.
  • FIG. 5 is a structural block diagram of a core network element that implements a default route decision according to an embodiment of the present invention. As shown in FIG. 5, the method includes at least a decision unit 51 and a decision notification unit 52.
  • the determining unit 51 is configured to: determine a default route according to a default route pre-configured by the user equipment UE;
  • the decision notification unit 52 is configured to notify the UE of the default route of the decision as the default route of the flow migration.
  • the core network element of the embodiment of the present invention further includes a receiving unit 53 configured to: receive a default route pre-configured by the UE sent by the UE.
  • Decision unit 52 is set to,
  • the pre-configured default route is accepted according to the routing policy and/or the route configuration of the access network, the pre-configured default route is used as the default route for decision; the pre-configured default route is not accepted.
  • the default route is pre-determined as the default route for the decision.
  • Decision unit 52 is also configured to
  • the UE When the core network element does not receive the preset route configured by the UE, the UE is instructed to use the default route as the default route for decision.
  • the decision unit 52 is further configured to
  • the UE When the core network element does not receive the preset route, the UE indicates the default route as the default route of the decision according to the network configuration or the subscription information of the user.
  • the core network element of the embodiment of the present invention further includes an updating unit 54 configured to
  • the updated default route is sent to the UE, so that the UE updates the default route of the current flow migration according to the updated default route.
  • the access network is a 3GPP access network or a WLAN access network
  • the core network element is the core network element of the 3GPP access network.
  • the core network element includes at least one of the following network elements: PCRF, PDN GW, HSS, 3GPP AAA, and ANDSF.
  • FIG. 6 is a structural block diagram of a user equipment that implements a default routing decision according to an embodiment of the present invention. As shown in FIG. 6, the method includes: a sending unit 61 and a receiving unit 62.
  • the sending unit 61 is configured to: send a pre-configured default route to the core network element, so that the core network element determines a default route according to the default route preset by the UE;
  • the receiving unit 62 is configured to: receive a default route of the core network element decision as a lack of flow migration Independent routing.
  • the user equipment further includes an update routing unit 63 configured to: when receiving the updated default route to the core network element, update the default route of the current flow migration according to the updated default route.
  • a system for implementing a default routing decision includes a core network element and a user equipment, where the core network element includes: a decision unit and a decision notification unit.
  • a decision unit configured to: determine a default route according to a default route pre-configured by the user equipment UE;
  • the decision notification unit is configured to: notify the UE of the default route of the decision as the default route of the flow migration.
  • the user equipment includes: a sending unit and a receiving unit; wherein
  • the sending unit is configured to: send a pre-configured default route to the core network element;
  • the receiving unit is configured to: receive a default route determined by the core network element as the default route of the flow migration.
  • FIG. 7 is a schematic diagram of the architecture of the TWAN or ePDG access to the EPC network deployment, such as As shown in FIG. 7, the TWAN to PDN GW is an S2a interface, the ePDG to PDN GW is an S2b interface, the authentication interface between the TWAN and the 3GPP AAA is STa, and the authentication interface between the ePDG and the 3GPP AAA is SWm, 3GPP AAA and HSS The interface between them is SWx.
  • the UE is pre-configured with a default route for the NB-IFOM.
  • the UE first establishes a multi-access PDN connection in the initial 3GPP attachment.
  • the UE and the core network element complete the NB-IFOM pre-configured default route confirmation.
  • the acknowledgment may be performed according to the routing policy and/or the routing configuration of the access network; the UE establishes a multi-access PDN connection in the WLAN access network.
  • the dynamic policy and charging rule control (PCC) is an optional architecture, that is, the setting of the PCRF is optional.
  • FIG. 8 is the first embodiment of the present invention
  • Step 801 The UE sends a pre-configured default route for IP flow migration to the mobility management unit (MME).
  • MME mobility management unit
  • Step 802 If the attach request message does not have integrity protection or integrity protection fails, the UE performs an authentication and authentication process of the MME to the home subscription subscriber server (HSS).
  • HSS home subscription subscriber server
  • Step 803 The MME sends the attach request information including the default route to the packet data network gateway (PDN GW) through the service gateway (SGW).
  • PDN GW packet data network gateway
  • SGW service gateway
  • Step 804 If it is determined by the PDN GW how to determine the default route, the received default route of the UE is confirmed according to the routing policy or the route configuration. If accepted, the default route is included in the determined default route.
  • the IP-CAN session establishment indication message is sent to the PCRF (in the case where the PCRF is set in the network); if the default route is not accepted, the PDN GW includes the predetermined default route in the IP-CAN session establishment indication message. It is sent to the PCRF.
  • the predetermined default route refers to one or one network-side default route determined by the network element according to the operator policy, routing policy, and the like.
  • the PDN GW sends the received default route to the PCRF in the IP-CAN session establishment indication message;
  • Step 805 The PCRF confirms the received default route of the UE according to the routing policy or the routing configuration. If yes, the default route is included in the IP-CAN session establishment acknowledgement message and sent to the PDN GW. If the default is not accepted, Provincial routing, the PCRF sends the predetermined default route to the PDN GW in the IP-CAN session establishment confirmation message;
  • the PCRF performs the corresponding policy formulation and returns a confirmation message to the PDN GW.
  • Step 806 The PDN GW includes the default route of the (PDN GW or PCRF) decision to be sent to the MME through the SGW in the setup session response message.
  • Step 807 The MME sends the received default route to the UE in an attach accept message.
  • Step 808 The UE establishes a multi-access PDN connection for stream migration from the trusted WLAN access network according to the default route.
  • the UE is pre-configured with a default route for the NB-IFOM.
  • the UE first establishes a multi-access PDN connection in the 3GPP initial attach, and the UE establishes a multi-access PDN connection in the WLAN access network, and runs on the WLAN access network. It is a single connection mode based on S2a. In this process, the UE and the core network complete the confirmation of the NB-IFOM pre-configured default route.
  • the dynamic policy and charging rule control (PCC) is an optional architecture, that is, the setting of the PCRF is optional.
  • FIG. 9 is a flowchart of a method according to a second embodiment of the present invention. As shown in FIG. 9, the method includes:
  • Step 901 The UE establishes a multi-access PDN connection for stream migration on the 3GPP.
  • Steps 902 to 906 the UE performs identity authentication, and receives an EAP request challenge message after verification.
  • the method includes: the UE and the TMAN perform request authentication; after requesting the authentication, the request authentication result is attached to the Diameter EAP Request message (DER, Diameter-EAP-Request) and sent to the 3GPP AAA/HSS, and the 3GPP AAA/HSS feeds back the EAP according to the DER message.
  • a Diameter EAP Response message (DEA, Diameter-EAP-Answer) containing the request challenge message is sent to the TWAN, and the TWAN sends an EAP Request Challenge message to the UE.
  • Steps 907-908 The UE sends the local pre-configured default route for IP flow migration to the 3GPP AAA in the EAP challenge message.
  • the UE sends the UE's pre-configured default route to the TWAN in the EAP Challenge message.
  • the TWAN attaches the EAP Challenge message containing the pre-configured default route to the DER message and sends it to the 3GPP AAA.
  • 3GPP AAA sends the received default route to the trusted WLAN access network (TWAN); the TWAN includes the default route in the session establishment request (Create Session Request) or the proxy binding update PBU message. Sent to the PDN GW;
  • the pre-configured default route of the UE received by the PDN GW is confirmed. If accepted, the default route is included in the IP-CAN session establishment indication message and sent to the PCRF ( In the case where the PCRF is set in the network); if the default route is not accepted, the PDN GW includes the predetermined default route in the IP-CAN session establishment indication message. Sent to the PCRF;
  • the PDN GW sends the received default route to the PCRF in the IP-CAN session establishment indication message; the PDN GW forwards the default route to the PCRF.
  • Steps 912-717 If the default route is determined by the PCRF, the PCRF confirms the default route pre-configured by the received UE, and if accepted, the default route is included in the IP connection access network, (IP-CAN, The IP-Connectivity Access Network, the session establishment confirmation message is sent to the PDN GW; if the default route is not accepted, the PCRF sends the predetermined default route to the PDN GW in the IP-CAN session establishment confirmation message; otherwise After receiving the default route, the PCRF performs the corresponding policy formulation and returns a confirmation message to the PDN GW.
  • IP-CAN The IP-Connectivity Access Network
  • the PDN GW sends the predetermined default route to the UE through the TWAN/3GPP AAA in the Create Session Response or Proxy Binding Acknowledgement PBA message.
  • Steps 918-921 complete the remaining EAP authentication and authorization process.
  • the TWAN After receiving the EAP authentication and authorization request sent by the UE, the TWAN sends the DER information to the 3GPP.
  • the 3GPP responds to the authorization request and sends the authorization result to the UE through the TWAN.
  • the UE is pre-configured with a default route for the NB-IFOM.
  • the UE first establishes a multi-access PDN connection in the 3GPP initial attach, and the UE establishes a multi-access PDN connection in the WLAN access network, and runs on the WLAN access network. It is based on the S2a multi-connection mode.
  • the UE and the core network element complete the NB-IFOM pre-configured default route confirmation.
  • the dynamic policy and the charging rule control PCC are optional architectures, that is, the settings of the PCRF are optional.
  • FIG. 10 is a flowchart of a method according to a third embodiment of the present invention. As shown in FIG. 10, the method includes:
  • Step 1001 The UE sends the default route of the locally pre-configured IP flow migration to the TWAN in the WLCP connection setup request message.
  • Steps 1002 to 1003 the TWAN sends the default route to the PDN GW in the Create Session Request or the Proxy Binding Update PBU message;
  • the PDN GW decides the default route, the default route root pre-configured for the received UE. Confirm according to the routing policy or routing configuration. If yes, the default route is included in the IP-CAN session establishment indication message and sent to the PCRF (in the case of setting the PCRF in the network); if not Accept, the PDN GW sends the predetermined default route to the PCRF in the IP-CAN session establishment indication message;
  • the PDN GW sends the received default route to the PCRF in the IP-CAN session establishment indication message.
  • the PCRF performs the corresponding policy formulation and returns a confirmation message to the PDN GW.
  • the PDN GW sends the default route of the network decision to the TWAN in the Create Session Response or Proxy Binding Acknowledgement PBA message.
  • Step 1006 The TWAN sends the received default route to the WLCP connection establishment corresponding message to the UE.
  • the UE is pre-configured with a default route for the NB-IFOM.
  • the UE first establishes a multi-access packet data network connection in the 3GPP initial attach, and the UE establishes a multi-access packet data network connection in the WLAN access network, and is connected to the WLAN.
  • the incoming network is based on the S2b mechanism, in which the UE and the core network element complete the NB-IFOM pre-configured default route confirmation.
  • the dynamic policy and charging rule control (PCC) is an optional architecture, that is, the setting of the PCRF is optional.
  • FIG. 11 is a flowchart of a method according to a fourth embodiment of the present invention. As shown in FIG. 11, the method includes:
  • Step 1101 Perform IKEv2 authentication and tunnel establishment procedure between the UE, the ePDG, and the 3GPP AAA.
  • the UE includes the locally pre-configured default route for IP flow migration in the Internet Key Exchange Authentication (IKE_AUTH) request.
  • IKE_AUTH Internet Key Exchange Authentication
  • the UE Before step 1101, the UE establishes a PDN connection for flow migration from the 3GPP, and establishes an EAP authentication authorization from the trusted WLAN access network.
  • Steps 1102 to 1103, the ePDG sends the pre-configured default route to the PDN GW in a session establishment request (Create Session Request) or a proxy binding update proxy binding update (PBU) message;
  • a session establishment request Create Session Request
  • PBU proxy binding update proxy binding update
  • the PDN GW decides the default route, the default route pre-configured by the received UE is confirmed according to the routing policy or the routing configuration. If accepted, the default route is included in the IP-CAN as the determined default route.
  • the session establishment indication message is sent to the PCRF (in the case of setting the PCRF in the network); if not, the PDN GW sends the predetermined default route in the IP-CAN session establishment indication message to the PCRF;
  • the PDN GW sends the received default route to the PCRF in the IP-CAN session establishment indication message;
  • Steps 1104 to 1105 If the PCRF decides the default route, the PCRF confirms the default route pre-configured by the received UE according to the routing policy or the routing configuration. If yes, the default route is included in the IP-CAN session establishment confirmation. The message is sent to the PDN GW; if not, the PCRF sends the predetermined default route to the PDN GW in the IP-CAN session establishment confirmation message;
  • the PCRF performs the corresponding policy formulation and returns a confirmation message to the PDN GW.
  • the PDN GW sends the pre-acknowledged default route to the ePDG in the Create Session Response or Proxy Binding Acknowledgement PBA message.
  • Step 1106 The ePDG sends the received default route to the UE in the IKE_AUTH corresponding message.
  • the UE does not pre-configure the default route for the NB-IFOM.
  • the UE first establishes a multi-access packet data network connection in the initial 3GPP attachment.
  • the core network element sends the default route confirmed by the NB-IFOM.
  • a multi-access packet data network connection is then established in the WLAN access network.
  • FIG. 12 is a flowchart of a method according to a fifth embodiment of the present invention, and FIG. 12 is substantially similar to FIG. 8 except that The default route that is pre-configured by the UE is not included in the message of the steps 1201 to 1204 corresponding to the 801 to 804.
  • the PCRF directly sends the default route indicated by the core network element to the UE.
  • FIG. 13 is a flowchart of a method according to a sixth embodiment of the present invention. As shown in FIG. 13, the flowcharts in FIG. 13 and FIG. 9 are basically the same, except that the messages of steps 1307 to 1311 corresponding to steps 907 to 911 are not.
  • the default route pre-configured by the UE is included.
  • the PCRF directly sends the default route indicated by the core network element to the UE.
  • the UE does not pre-configure the default route for the NB-IFOM.
  • the UE first establishes a multi-access packet data network connection in the 3GPP initial connection; the UE establishes a multi-access packet data network connection in the WLAN access network, and is connected in multiple layers.
  • mode. 14 is a flowchart of a method according to a seventh embodiment of the present invention. As shown in FIG. 14, the flow in FIG. 14 and FIG. 10 are basically the same, except that the messages in steps 1401 to 1403 corresponding to steps 1001 to 1003 are not.
  • the default route pre-configured by the UE is included, and the PCRF directly sends the default route indicated by the core network element to the UE.
  • the UE does not pre-configure the default route for the NB-IFOM.
  • the UE first establishes a multi-access packet data network connection in the 3GPP initial attach; the UE establishes a multi-access packet data network connection in the WLAN access network, and is the S2b mechanism.
  • . 15 is a flowchart of a method according to an eighth embodiment of the present invention. As shown in FIG. 15, the flow in FIG. 15 is substantially the same as that in FIG. 11, except that the messages in steps 1501 to 1503 corresponding to steps 1101 to 1103 are not.
  • the default route pre-configured by the UE is included, and the PCRF directly sends the default route indicated by the core network element to the UE.
  • FIG. 16 is a flowchart of a method according to a ninth embodiment of the present invention. As shown in FIG. 16, the method includes:
  • the PCRF sends the updated default route to the UE.
  • the PCRF sends the updated default route to the PDN GW and sends it to the PDN GW in the policy and charging rule provision message; the PDN GW saves the updated default route and includes the updated default route in the update bearer request or the update notification message.
  • the middle is sent to the TWAN; the TWAN sends the default route to the UE through the WLCP request message.
  • the UE replies with an acknowledgement message to the core network element.
  • the TWAN After receiving the WLCP response message, the TWAN sends an update bearer response or acknowledgement message after updating the default route to the PGW, and the PGW sends an acknowledgement message to the PCRF.
  • the UE has established a multi-access PDN connection established by the NB-IFOM through the 3GPP and the trusted WLAN, and the network decision changes need to update the default route, and the PDN GW (when the default route is decided by the PDN GW) Or the PCRF (when the default route is determined by the PCRF) sends a message including the updated default route request message to the UE.
  • FIG. 17 is a flowchart of the method according to the tenth embodiment of the present invention. As shown in FIG.
  • the PCRF sends the updated default route to the UE, including:
  • the PCRF sends the updated default route to the PDN GW in the policy and charging rule providing message; or the PDN GW includes the updated default route in the update bearer request or the update notification message, and sends the message to the MME through the SGW; the MME will The default route is sent to the UE through the NAS message.
  • the UE replies to the core network with a non-access stratum (NAS, Non-Access Stratum) message to confirm the updated default route;
  • NAS Non-Access stratum
  • the MME After receiving the NAS response message, the MME sends an update bearer response or acknowledgement message after updating the default route to the PGW, and the PGW sends an acknowledgement message to the PCRF.
  • the UE has established a multi-access PDN connection established by the NB-IFOM through the 3GPP and the trusted WLAN.
  • the network decision changes need to update the default access (default access), and the PDN GW (when determined by the PDN GW) When the route is saved) or the PCRF (when the default route is decided by the PCRF), the default route request message including the update is sent to the UE, and FIG. 18 is the present invention.
  • the method flowchart of the eleventh embodiment, as shown in FIG. 18, includes:
  • the PCRF sends the updated default route to the UE.
  • the PCRF sends the updated default route to the PDN GW in the policy and charging rule providing message; or the PDN GW includes the updated default route in the update bearer request or the update notification message, and sends the message to the MME through the SGW; the MME will The default route is sent to the UE through the NAS message.
  • the UE replies to the core network element with a NAS message confirming the updated default message
  • the MME After receiving the NAS response message, the MME sends an update bearer response or acknowledgement message after updating the default route to the PGW, and the PGW sends an acknowledgement message to the PCRF.
  • the UE has established a multi-access PDN connection established by the NB-IFOM through the 3GPP and the untrusted WLAN.
  • the network decision changes need to update the default access (default access), and the PDN GW (when determined by the PDN GW)
  • the default route request message including the update is sent to the UE.
  • FIG. 19 is a flowchart of the method according to the twelfth embodiment of the present invention, as shown in FIG. include:
  • the PCRF sends the updated default route to the UE.
  • the PCRF sends the updated default route to the PDN GW in the policy and charging rule providing message; or the PDN GW includes the updated default route in the update bearer request or the update notification message to the ePDG; the ePDG uses the default route
  • the message is sent to the UE through a Network Key Exchange Protocol (IKE) message (INFORMATIONAL).
  • IKE Network Key Exchange Protocol
  • the ePDG After receiving the INFORMATIONAL response message, the ePDG sends an update bearer response or acknowledgement message after updating the default route to the PGW, and the PGW sends an acknowledgement message to the PCRF.
  • the UE is pre-configured with a default route for the NB-IFOM.
  • the UE first establishes a multi-access packet data network connection in the initial 3GPP attachment.
  • the UE and the core network element complete the determination of the NB-IFOM default route.
  • the default route is obtained from the HSS.
  • the MME sends the default route to the PGW/PCRF, and the PCRF/PGW is locally saved and sent to the UE.
  • the default route is obtained by the UE from the ANDSF.
  • the UE sends a default route to the PGW/PCRF, and the PCRF/PGW saves the acknowledgment message to the UE after being locally saved.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the core network element is configured with a default route according to the UE, and the default route is determined.
  • the default route is indicated to the UE, and the default route is implemented. Decision making.

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Abstract

L'invention concerne un procédé, un élément de réseau fédérateur, un équipement utilisateur et un système permettant de prendre une décision d'itinéraire par défaut, le procédé comprenant les étapes suivantes : l'élément de réseau fédérateur choisit un itinéraire par défaut selon un itinéraire par défaut préconfiguré par l'équipement utilisateur (UE); et l'élément de réseau fédérateur notifie l'itinéraire par défaut choisi à l'UE qui est utilisé en tant qu'itinéraire par défaut pour une migration de flux.
PCT/CN2015/091132 2015-03-27 2015-09-29 Procédé, élément de réseau fédérateur, équipement utilisateur et système permettant de prendre une décision d'itinéraire par défaut Ceased WO2016155277A1 (fr)

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