WO2013182037A1 - Procédé et dispositif de transmission d'adresse ip - Google Patents

Procédé et dispositif de transmission d'adresse ip Download PDF

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Publication number
WO2013182037A1
WO2013182037A1 PCT/CN2013/076708 CN2013076708W WO2013182037A1 WO 2013182037 A1 WO2013182037 A1 WO 2013182037A1 CN 2013076708 W CN2013076708 W CN 2013076708W WO 2013182037 A1 WO2013182037 A1 WO 2013182037A1
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WIPO (PCT)
Prior art keywords
address
interface
epdg
pgw
pcrf entity
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PCT/CN2013/076708
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English (en)
Chinese (zh)
Inventor
邓强
Original Assignee
电信科学技术研究院
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Publication of WO2013182037A1 publication Critical patent/WO2013182037A1/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
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an IP address transmission method and apparatus. Background technique
  • the User Equipment can establish one or more Evolved Packet Cores through a fixed broadband access network (defined by the Broadband Forum (BBF), the following is called a BBF network).
  • BBF Broadband Forum
  • EPC The packet data network (PDN) of the network is connected. It is also possible to establish a non-Seamless WLAN Offload (NSW) shunt connection directly through the BBF network.
  • NSW non-Seamless WLAN Offload
  • EPC-routed PDN connections depending on the access mode, it can be divided into S2b interface access based on PDN gateway (PGW) and evolved packet data network gateway (ePDG), PDN-based gateway Access to the untrusted S2c interface between the UE and the access based on the trusted S2c interface between the PDN gateway and the UE.
  • PGW PDN gateway
  • ePDG evolved packet data network gateway
  • an IPSec (IP security) tunnel is established between the UE and the ePDG on the SWu interface.
  • the S2b interface is used between the ePDG and the PGW, and the protocol used on the S2b interface may be a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) or a Proxy Mobile IP (PMIP).
  • GPRS General Packet Radio Service
  • GTP General Packet Radio Service Tunneling Protocol
  • PMIP Proxy Mobile IP
  • the S2b interface using the GTP can be referred to as the S2b-GTP interface
  • the S2b interface using the PMIP protocol can be referred to as the S2b-PMIP interface.
  • an IPSec tunnel is established between the UE and the ePDG, and a DSMIPv6 (Dual Stack Mobile IP) tunnel is established between the UE and the PGW on the S2c interface.
  • a DSMIPv6 Dual Stack Mobile IP
  • the Broadband Network Gateway can distinguish between EPC-routed traffic and NSWV traffic.
  • different QoS control, Policy and Charging Rules Function (PCRF) entities need to control the work through the PCRF entity and the broadband policy.
  • the Broadband Policy Control Function (BPCF) S9a interface between the entities sends the destination IP address in the IP packet header corresponding to the external tunnel where the EPC-routed PDN is connected, that is, the ePDG IP address or PGW IP address to the BBF.
  • the internet The BNG can determine whether it is EPC-routed traffic by checking whether the next hop address of the packet is an ePDG IP address or a PGW IP address.
  • the IP address sent on the S9a interface is as follows:
  • the PCRF entity sends the ePDG IP address to the BBF network through the S9a interface.
  • the PCRF entity sends the ePDG IP address to the BBF network through the S9a interface.
  • the PCRF entity sends the PGW IP address to the BBF network through the S9a interface.
  • the prior art describes how the PCRF entity sends an ePDG IP address or a PGW IP address to the BBF network through the S9a interface in different access modes.
  • the PCRF entity obtains the ePDG IP address and the PGW IP address.
  • the embodiment of the invention provides an IP address transmission method and device, so that the PCRF can obtain an ePDG IP address or a PGW IP address.
  • the PCRF entity receives a message from the PGW entity from a Gx interface between the PCRF entity and the packet data network gateway PGW;
  • the PCRF entity obtains the evolved packet data network gateway IP address ePDG IP address from the message;
  • the PCRF entity obtains the PGW IP address from the message.
  • the PCRF entity receives a message from the ePDG from a Gxb* interface between the PCRF entity and the evolved packet data network gateway ePDG;
  • the PCRF entity is from the Obtain the ePDG IP address in the message.
  • An IP address transmission method provided by an embodiment of the present invention includes: In the access mode using the general packet radio service tunneling protocol on the S2b interface between the PGW and the evolved packet data network gateway ePDG, the PGW receives the Create Session Request message sent by the ePDG through the S2b interface, and obtains the ePDG IP from the PPD. The PGW sends a connection access network session to the PCRF entity through the Gx interface to establish an IP-CAN Session Establishment message, which carries the ePDG IP address.
  • the ePDG sets the ePDG IP address in the create session request Create Session Request message;
  • the ePDG sends a Create Session Request message carrying the above address information to the PGW entity through the S2b interface.
  • the ePDG sets the ePDG IP address in the gateway control session to establish the Gateway. Control Session Establishment message;
  • the ePDG sends a Gateway Control Session Establishment message to the PCRF through the Gxb* interface.
  • An IP address sending method provided by the embodiment of the present invention includes:
  • the PGW sets the PGW IP address in the connection access network session establishment IP-CAN Session Establishment message;
  • the PGW sends an IP-CAN Session Establishment message to the PCRF entity through the Gx interface.
  • a first message receiving unit configured to receive a message from the PGW entity on a Gx interface between the policy and charging rule function PCRF entity and the packet data network gateway PGW;
  • a first acquiring unit configured to obtain an evolved packet data network gateway IP from the message in an access mode using a general packet radio service tunneling protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG Address ePDG IP address; In the access mode based on the trusted S2c interface between the PGW and the UE, the PGW IP address is obtained from the message.
  • a second message receiving unit configured to receive a message from the ePDG on a Gxb* interface between the PCRF entity and the evolved packet data network gateway ePDG;
  • a second obtaining unit configured to use the proxy mobile IP protocol access method on the S2b interface between the PGW and the evolved packet data network gateway ePDG, and the access based on the untrusted S2c interface between the PGW and the UE In the mode, the ePDG IP address is obtained from the message.
  • An IP address transmission apparatus includes: a receiving unit, configured to receive, by using an S2b interface, a Create Session Request message sent by the ePDG in an access mode using a general packet radio service tunneling protocol on the S2b interface between the PGW and the evolved packet data network gateway ePDG, Obtain the ePDG IP address from it;
  • the sending unit is configured to send a connection access network session to the PCRF entity through the Gx interface to establish an IP-CAN Session Establishment message, where the ePDG IP address is carried.
  • a first setting unit configured to set an ePDG IP address in a create session request Create Session Request message in an access mode using a general packet radio service tunneling protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG Medium
  • the first sending unit is configured to send, by using the S2b interface, a Create Session Request message that creates the session request carrying the address information to the PGW entity.
  • a second setting unit configured to use the proxy mobile IP protocol in the access mode based on the S2b interface between the PGW and the evolved packet data network gateway ePDG, and the access mode based on the untrusted S2c interface, the ePDG IP address Set in the Gateway Control Session Establishment message in the gateway control session;
  • the second sending unit is configured to send the Gateway Control Session Establishment message to the PCRF through the Gxb* interface.
  • a third setting unit configured to set, in the access mode based on the trusted S2c interface, the PGW IP address in the connection access network session establishment IP-CAN Session Establishment message;
  • the third sending unit is configured to send an IP-CAN Session Establishment message to the PCRF entity through the Gx interface.
  • the PCRF entity receives a message from the PGW entity from the Gx interface between the PCRF entity and the packet data network gateway PGW through the policy and charging rule function; between the PGW and the evolved packet data network gateway ePDG In the access mode using the general packet radio service tunneling protocol on the S2b interface, the PCRF entity obtains the evolved packet data network gateway IP address ePDG IP address from the message; access based on the trusted S2c interface between the PGW and the UE In the mode, the PCRF entity obtains the PGW IP address from the message, so that the PCRF can acquire the ePDG IP address or the PGW IP address.
  • FIG. 1 is a schematic flowchart diagram of an IP address obtaining method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of an IP-CAN Session Establishment process of an EPC-routed PDN connection according to Embodiment 1 of the present invention
  • 3 is a schematic diagram of an IP-CAN Session Establishment process of an EPC-routed PDN connection according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for acquiring an IP address according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a method and a device for acquiring an IP address, so that the PCRF entity can obtain an ePDG IP address or a PGW IP address.
  • the UE can establish one or more EPC-routed PDN connections and one NSW0 offload connection at the same time.
  • the PCRF entity needs to send the ePDG IP address or PGW IP address to the BBF network in order to enable the BNG to distinguish between the EPC-routed traffic and the NSWO traffic to perform different QoS control. Therefore, the embodiment of the present invention provides a technical solution for how the PCRF entity obtains an ePDG IP address or a PGW IP address.
  • the embodiment of the invention provides a method for obtaining an ePDG IP address or a PGW IP address by a PCRF entity in different access modes.
  • an IPSec tunnel is established between the UE and the ePDG on the SWu interface.
  • the S2b interface between the ePDG and the PGW uses the GTP protocol, and the GGW interface is used between the PGW and the PCRF entity.
  • the S2b interface message and the Gx interface message are extended to carry the ePDG IP address simply as follows:
  • IP connection access network session establishment in EPC-routed PDN connection IP-CAN (Connective Access
  • the ePDG carries an ePDG IP address in the Create Session Request message sent by the PGW (or the PCEF (Policy and Charging Enforcement Function) entity) on the S2b interface.
  • PGW Policy and Charging Enforcement Function
  • the PGW (or PCEF entity) carries the ePDG IP address in the IP-CAN Session Establishment message sent to the PCRF on the Gx interface.
  • the home PCRF (HPCRF) entity sends a gateway control session to the visited PCRF entity on the S9 interface between the home PCRF entity and the Visited PCRF (VPCRF) entity.
  • HPCRF home PCRF
  • VPCRF Visited PCRF
  • the message carries the ePDG IP address.
  • the PGW (or PCEF entity) carries the ePDG IP address in the IP-CAN Session Establishment message sent to the VPCRF entity on the Gx interface.
  • an IPSec tunnel is established between the UE and the ePDG on the SWu interface, and the ePDG and the PGW are
  • the S2b interface uses the Proxy Mobile IP (PMIP) protocol
  • the Gxb* interface is used between the ePDG and PCRF entities.
  • the extended Gxb* interface message to carry the ePDG IP address is specifically:
  • BBERF Bearing Binding and Event Reporting
  • the ePD or the BBERF entity carries the ePDG IP address in the Gateway Control Session Establishment message sent to the PCRF entity on the Gxb* interface.
  • the ePDG (or BBERF entity) carries the ePDG IP address in the Gateway Control Session Establishment message sent to the VPCRF entity on the Gxb* interface.
  • an IPSec tunnel is established between the UE and the ePDG
  • a DSMIPv6 tunnel is established between the UE and the PGW on the S2c interface
  • the Gxb* interface is used between the ePDG and the PCRF entity.
  • the Gxb* interface message is extended to carry the ePDG IP address. Specifically:
  • the ePDG (or BBERF entity) carries the ePDG IP address in the Gateway Control Session Establishment message sent to the PCRF entity on the Gxb* interface.
  • the ePDG (or BBERF entity) carries the ePDG IP address in the Gateway Control Session Establishment message sent to the VPCRF entity on the Gxb* interface.
  • the ePDG transmits the ePDG IP address to the PCRF through the Gxb* interface.
  • a DSMIPv6 tunnel is established between the UE and the PGW on the S2c interface, and a Gx interface is used between the PGW and the PCRF entity.
  • the Gx interface message is extended to carry the PGW IP address. Specifically:
  • the PGW (or PCEF entity) carries the PGW IP address in the IP-CAN Session Establishment message sent to the PCRF entity on the Gx interface.
  • the HPCRF entity sends the Gateway to the VPCRF entity on the S9 interface.
  • the Control Session message carries the PGW IP address.
  • an IP address obtaining method provided by the embodiment of the present invention includes:
  • the PCRF entity receives a message from the PGW through a Gx interface between the PCRF entity and the PGW.
  • the PCRF entity In the access mode based on the S2b-GTP interface, the PCRF entity obtains the ePDG IP address from the message. In the access mode based on the trusted S2c interface, the PCRF entity obtains the PGW IP address from the message.
  • the message is:
  • the IP connection accesses the network session to establish an IP-CAN Session Establishment message.
  • the PCRF entity is a home PCRF entity, and the method further includes:
  • the home PCRF entity accesses the PCRF through the S9 interface between the home PCRF entity and the visited PCRF entity.
  • the entity sends a gateway control session Gateway Control Session message, which carries an ePDG IP address;
  • the home PCRF entity In the access mode based on the trusted S2c interface, the home PCRF entity sends a gateway control session Gateway Control Session message to the visited PCRF entity through the S9 interface, where the PGW IP address is carried.
  • the PCRF entity is a visited PCRF.
  • the PCRF entity receives the message from the ePDG through the Gxb* interface between the PCRF entity and the evolved packet data network gateway ePDG;
  • the PCRF entity Obtain the ePDG IP address in the message.
  • the message from the ePDG is:
  • the gateway control session establishes a Gateway Control Session Establishment message.
  • the PCRF entity is a VPCRF entity.
  • the method for transmitting an IP address provided by the present invention includes:
  • the PGW receives the Create Session Request message sent by the ePDG through the S2b interface, and obtains the ePDG IP from the PPD. Address;
  • the PGW sends a connection to the PCRF entity through the Gx interface to access the network session to establish an IP-CAN Session.
  • Establishment message which carries the ePDG IP address.
  • the PCRF entity is an HPCRF entity; in the local grooming Local Breakout roaming scenario, the PCRF entity is a VPCRF entity.
  • the method for sending an IP address provided by the present invention includes:
  • the ePDG sets the ePDG IP address in the create session request Create Session Request message;
  • the ePDG sends a Create Session Request message carrying the ePDG IP address to the PGW through the S2b interface.
  • the method for sending an IP address provided by the present invention includes:
  • the ePDG sets the ePDG IP address in the gateway control session to establish the Gateway. Control Session Establishment message;
  • the ePDG sends a Gateway Control Session Establishment message to the PCRF entity through the Gxb* interface.
  • the PCRF entity is a VPCRF entity.
  • the method for sending an IP address provided by the present invention includes:
  • the PGW sets the PGW IP address in the connection access network session establishment IP-CAN Session Establishment message;
  • the PGW sends an IP-CAN Session Establishment message to the PCRF entity through the Gx interface.
  • the PCRF entity is an HPCRF entity; in the local grooming Local Breakout roaming scenario, the PCRF entity is a VPCRF entity.
  • Embodiment 1 Referring to FIG. 2, the IP-CAN Session Establishment process of the EPC-routed PDN connection (based on the S2b-GTP interface access) includes:
  • Step 1 The ePDG carries the ePDG IP address in the Create Session Request message.
  • Step 2 The PGW carries the ePDG IP address in the indication of the IP-CAN Session Establishment message (Indication).
  • Step 3 The PCRF carries the ePDG IP address in the Gateway Control Establishment message.
  • Embodiment 2 Referring to FIG. 3, the IP-CAN Session Establishment process of the EPC-routed PDN connection (based on trusted S2c access, Home routed roaming scenario) includes:
  • Step 1 Indication of the PGW (or PCEF) in the IP-CAN Session Establishment message (Indication) Carry PGW IP address;
  • Step 2 The HPCRF carries a PGW IP address in a Gateway Control Session message on the S9 interface.
  • Step 3 The VPCRF carries the PGW IP address in the Gateway Control Establishment message.
  • an IP address obtaining apparatus includes: a first message receiving unit 11 configured to pass between a PCRF entity and a packet data network gateway PGW through a policy and charging rule function. Gx interface, receiving messages from the PGW;
  • the first obtaining unit 12 is configured to obtain an evolved packet data network gateway from the message in an access mode using a general packet radio service tunneling protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG.
  • IP address ePDG IP address In the access mode based on the trusted S2c interface between the PGW and the UE, the PGW IP address is obtained from the message.
  • the message is:
  • the IP connection accesses the network session to establish an IP-CAN Session Establishment message.
  • the PCRF entity is a home PCRF entity
  • the device further includes:
  • the message sending unit 13 is configured to use an S9 interface between the home PCRF entity and the visited PCRF in the access mode using the general packet radio service tunneling protocol on the S2b interface between the PGW and the evolved packet data network gateway ePDG. Sending a Gateway Control Session message to the visited PCRF entity, which carries the ePDG IP address. In the access mode based on the trusted S2c interface, the Gateway Control Session message is sent to the visited PCRF entity through the S9 interface, where the GGW IP is carried. Address.
  • the PCRF entity is a visited PCRF entity.
  • the IP address obtaining apparatus in this embodiment is a PCRF entity apparatus
  • the PCRF entity apparatus includes a receiving module for receiving information, a transmitting module for transmitting information, and a central processing module for information processing on hardware.
  • the first message receiving unit 11 in the embodiment is implemented in the receiving module
  • the first acquiring unit 12 is implemented in the central processing module
  • the message sending unit 13 is implemented in the sending module.
  • another IP address obtaining apparatus provided by the embodiment of the present invention includes:
  • a second message receiving unit configured to receive a message from the ePDG by using a Gxb* interface between the PCRF entity and the evolved packet data network gateway ePDG;
  • a second obtaining unit configured to use an access method based on a proxy mobile IP protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG, or an access based on an untrusted S2c interface between the PGW and the UE In the mode, the ePDG IP address is obtained from the message.
  • the message from the ePDG is:
  • the gateway control session establishes a Gateway Control Session Establishment message.
  • the PCRF entity is a VPCRF entity.
  • the IP address obtaining apparatus in this embodiment is a PCRF entity apparatus
  • the PCRF entity apparatus includes a receiving module for receiving information and a central processing module for information processing on the hardware, and the foregoing in the embodiment
  • the second message receiving unit is implemented in the receiving module, and the second acquiring unit is implemented in the central processing module.
  • an IP address transmission apparatus provided by the present invention includes:
  • a receiving unit configured to receive, by using an S2b interface, a create session request Create Session Request message sent by an ePDG, in an access mode using a general packet radio service tunneling protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG, Obtain the ePDG IP address from it;
  • a sending unit configured to send a connection access network session to the PCRF entity through the Gx interface to establish an IP-CAN Session
  • the PCRF entity is an HPCRF; in the local routing Local Breakout roaming scenario, the PCRF entity is a VPCRF.
  • the IP address transmission device in this embodiment is a PGW
  • the PGW includes a receiving module for receiving information, a transmitting module for transmitting information, and a central processing module for information processing.
  • the following functions of the receiving unit in the example are implemented in the receiving module: In the access mode using the general packet radio service tunneling protocol on the S2b interface between the PGW and the evolved packet data network gateway ePDG, the ePDG transmission is received through the S2b interface.
  • the creation session request Create Session Request message the following functions of the receiving unit are implemented in the central processing module:
  • the ePDG IP address is obtained therefrom, and the above sending unit is implemented in the sending module.
  • an IP address sending apparatus provided by the present invention on the ePDG side includes:
  • a first setting unit configured to set an ePDG IP address in a create session request Create Session Request message in an access mode using a general packet radio service tunneling protocol on an S2b interface between the PGW and the evolved packet data network gateway ePDG Medium
  • the first sending unit is configured to send, by using the S2b interface, a Create Session Request message that creates the session request carrying the address information to the PGW entity.
  • the IP address sending device in this embodiment is an ePDG
  • the ePDG includes a transmitting module for transmitting information and a central processing module for information processing on the hardware.
  • the first setting unit is in the center.
  • the processing module is implemented, and the first sending unit is implemented in the sending module.
  • an IP address sending apparatus provided by the present invention on the ePDG side includes:
  • the second setting unit is configured to use the proxy mobile IP protocol in the access mode based on the S2b interface between the PGW and the evolved packet data network gateway ePDG, or the access mode based on the untrusted S2c interface, and the ePDG IP address Set in the Gateway Control Session Establishment message in the gateway control session;
  • a second sending unit configured to send a Gateway Control Session Establishment message through a Gxb* interface Give PCRF.
  • the PCRF entity is a VPCRF entity.
  • the IP address sending device in this embodiment is an ePDG
  • the ePDG includes a transmitting module for transmitting information and a central processing module for information processing on the hardware.
  • the second setting unit is in the center.
  • the processing module is implemented, and the second sending unit is implemented in the sending module.
  • an IP address sending apparatus provided by the present invention includes:
  • a third setting unit configured to set, in the access mode based on the trusted S2c interface, the PGW IP address in the connection access network session establishment IP-CAN Session Establishment message;
  • the third sending unit is configured to send an IP-CAN Session Establishment message to the PCRF entity through the Gx interface.
  • the PCRF entity is an HPCRF entity; in the local grooming Local Breakout roaming scenario, the PCRF entity is a VPCRF entity.
  • the IP address sending device in this embodiment is a PGW
  • the PGW includes a transmitting module for transmitting information and a central processing module for information processing on the hardware.
  • the third setting unit is in the center.
  • the processing module is implemented, and the third sending unit is implemented in the sending module.
  • the Gx interface message between the PCRF and the PGW is extended, and the ePDG IP address or the PGW IP address is carried in the message; the S2b-GTP interface message is extended in the message.
  • the technical solution provided by the embodiment of the present invention enables the PCRF entity to obtain the ePDG IP address or the PGW IP address, so that the PCRF entity can send the ePDG IP address or the PGW IP address to the BBF network, so that the BNG can distinguish between the EPC-routed traffic and the NSWO. flow.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission d'adresse IP qui sont utilisés pour permettre à une entité PCRF d'acquérir une adresse IP ePDG ou une adresse IP PGW. Selon le procédé d'acquisition d'une adresse IP de la présente invention, une entité fonction de règles de politique et de facturation (PCFR) reçoit un message provenant d'une passerelle de données par paquets (PGW) sur une interface Gx ou reçoit un message provenant d'une passerelle de données par paquets évoluée (ePDG) sur une interface Gxb*, et l'entité PCRF acquiert une adresse IP ePDG ou une adresse IP PGW à partir du message.
PCT/CN2013/076708 2012-06-04 2013-06-04 Procédé et dispositif de transmission d'adresse ip WO2013182037A1 (fr)

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CN201210181290.5A CN103458390B (zh) 2012-06-04 2012-06-04 一种ip地址传输方法及装置

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