WO2012022218A1 - 一种建立会话、策略下发的方法和系统 - Google Patents

一种建立会话、策略下发的方法和系统 Download PDF

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Publication number
WO2012022218A1
WO2012022218A1 PCT/CN2011/077683 CN2011077683W WO2012022218A1 WO 2012022218 A1 WO2012022218 A1 WO 2012022218A1 CN 2011077683 W CN2011077683 W CN 2011077683W WO 2012022218 A1 WO2012022218 A1 WO 2012022218A1
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WIPO (PCT)
Prior art keywords
epdg
pcrf
interface
session
bberf
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PCT/CN2011/077683
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English (en)
French (fr)
Inventor
芮通
周晓云
孙默
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中兴通讯股份有限公司
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Publication of WO2012022218A1 publication Critical patent/WO2012022218A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4633Interconnection of networks using encapsulation techniques, e.g. tunneling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403Architecture for metering, charging or billing
    • H04L12/1407Policy-and-charging control [PCC] architecture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/20Traffic policing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66Policy and charging system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24Accounting or billing

Definitions

  • the present invention relates to the field of mobile communications, and in particular to a method and system for establishing a session and issuing a policy. Background technique
  • EPS evolved packet system
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobile Management Unit
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • AAA Authentication, Authorization and Accounting
  • Server Policy and Charging Rules Function
  • FIG. 1 is a schematic diagram of a system architecture of an EPS according to the related art, wherein the MME is responsible for control planes such as mobility management, processing of non-access stratum signaling, and management of user mobility management context;
  • S-GW is with E - UTRAN-connected access gateway device, forwarding data between E-UTRAN and P-GW, and responsible for buffering paging waiting data;
  • P-GW is EPS and Packet Data Network (PDN) network Border gateway, which is responsible for PDN access and forwarding data between EPS and PDN;
  • S-GW and P-GW are both core network gateways;
  • PCRF passes receiving interface R and carrier network protocol (IP, Internet Protocol) services
  • IP Internet Protocol
  • the EPS supports interworking with non-3GPP systems, wherein interworking with non-3GPP systems is implemented through an S2a/b/c interface, and the P-GW acts as an anchor between 3GPP and non-3GPP systems.
  • non-3GPP systems are classified into trusted non-3GPP IP access and untrusted non-3GPP IP access.
  • Trusted non-3GPP IP access can be directly connected to the P-GW through the S2a interface; untrusted non-3GPP IP access requires an evolved packet data gateway (ePDG, Evolved Packet Data Gateway) to be connected to the P-GW, ePDG and P-
  • ePDG evolved packet data gateway
  • the S2c provides user plane-related control and mobility support between the user equipment (UE, User Equipment) and the P-GW.
  • the supported mobility management protocol is dual IPv2 mobile IPv6 support ( DSMIPv6, Moblie IPv6 Support for Dual Stack Hosts and Routers).
  • the Policy and Charging Enforcement Function (PCEF) entity exists in the P-GW, and the PCRF and the P-GW exchange information through the Gx interface (see Figure 1).
  • PCEF Policy and Charging Enforcement Function
  • the S-GW also has a bearer binding and event reporting function (BBERF, Bearer Binding and Event Report). Function)
  • BBERF Bearer Binding and Event Report
  • the entity performs QoS control on the service data stream, and the S-GW and the PCRF exchange information through the Gxc interface (see Figure 1).
  • the BBERF is also resident in the trusted non-3GPP access gateway.
  • the trusted non-3GPP access gateway exchanges information with the PCRF through the Gxa interface (see Figure 1).
  • the S9 interface serves as an interface between the home PCRF and the visited PCRF, and provides a service application function (AF, Application Function) for the UE.
  • the UE sends the PCR to the PCRF through the Rx interface for formulating policy and charging control (PCC). , Policy and Charging Control) Business information for the policy.
  • PCC policy and charging control
  • the corresponding PDN network can be found by the access point name (APN, Access Point Name).
  • a connection from a UE to a PDN network is usually referred to as an IP-Connected Access Network (IP-CAN) session.
  • IP-CAN IP-Connected Access Network
  • BBERF and PCEF are established with the PCRF, respectively.
  • the Diameter session through which the policy meter information for controlling the IP-CAN session and the information for formulating the policy are transmitted.
  • the Broadband Forum (BBF, Broadband Forum) proposes the Broadband Policy Control Function (BPCF) of the Broadband Policy Control Architecture.
  • BPCF Broadband Policy Control Function
  • PEP Policy Implementation Point
  • BNG Broadband Network Access Gateway
  • AF AF develops a strategy for BPCF to provide appropriate business information.
  • the structure of BPCF is still relatively rough, and the relevant details are still being further developed.
  • the Fixed Mobile Convergence (FMC) scenario that operators are currently paying attention to is based on the research on 3GPP and BBF interconnection.
  • FMC Fixed Mobile Convergence
  • the mobile operator expands the wireless coverage. From the perspective of cost saving, it will lease a WLAN access line of the fixed network operator; the UE accesses the WLAN through the fixed network, due to this data. The transmission will pass through the fixed network.
  • the UE When the mobile operator regards the fixed network operator as an untrusted network, the UE establishes an IP Sec (IP security) tunnel with the ePDG, as shown in Figure 3, so as to ensure the UE to the ePDG.
  • IP Sec IP security
  • the transmitted data is encrypted, and the fixed network transmission device cannot know the content of the transmission.
  • the fixed network may not be aware of the access of the mobile user. For example, when the user accesses through the home gateway (RG, Residential Gateway), the RG shields the user from accessing.
  • RG Residential Gateway
  • the ePDG needs to inform the PCRF of the UE's access information (eg, IP-sec tunnel information and/or UE fixed network access ID), and then the PCRF notifies the BPCF through S9*, and the BPCF receives the UE according to the connection.
  • the roaming scene is divided into two methods: Home Routed and Local Breakout, as shown in Figure 4 and 5.
  • the data goes out from the P-GW of the home location.
  • the data can be directly routed out by the P-GW of the visited place. (Allowed, the data can be reduced compared to the Home Routed. The cost of routing bypasses).
  • the ePDG acts as the BBERF.
  • the ePDG establishes a Gxb session to the visited PCRF (V-PCRF) (the session is transmitted through the Gxb interface, referred to as the Gxb session).
  • V-PCRF visited PCRF
  • the ePDG can The user's access information is passed to the V-PCRF through Gxb, which in turn triggers the V-PCRF to establish an S9* (interface) session with the BPCF and an S9 session with the home PCRF (H-PCRF).
  • the ePDG does not act as a BBERF at this time.
  • the ePDG and the V-PCRF do not have a Gxb session (as shown in Figures 6 and 7), and the ePDG cannot pass the user through the Gxb interface.
  • the access information is transmitted to the V-PCRF.
  • the V-PCRF cannot sense the access of the UE without triggering the Gxb session, and does not trigger the V-PCRF to establish an S9* session to the BPCF.
  • the establishment of the S9* session can still be performed by the P-GW.
  • the V-PCRF is triggered by the Gx interface, as shown in FIG.
  • the ePDG can establish a Gxb session to the V-PCRF regardless of the protocol type, that is, even in the S2b-GTP scenario, the ePDG establishes a Gxb session to the V-PCRF. .
  • the ePDG can carry the user access information through the Gxb interface, and the V-PCRF receives the trigger, senses the UE access, and establishes an S9* session to the BPCF.
  • the existing S9 mechanism After receiving the message from the ePDG, the V-PCRF will be triggered to establish an S9 session to the H-PCRF; for the S2b-PMIP scenario, the S9 session The establishment is necessary (at this time ePDG as BBERF), and for the S2b-GTP scenario, the establishment of the S9 session is unnecessary (ePDG is not used as BBERF), and it will also generate the existing H-PCRF processing mechanism.
  • the effect, how to solve this problem without affecting the H-PCRF processing mechanism, is the focus of the research of the present invention.
  • the QoS policy performed by the ePDG is static, that is, the carrier implements the configuration mode (for example, configuring the static policy when the ePDG is powered on through the gateway configuration platform), so The control of the data stream is not accurate enough. If dynamic policies can be enforced on ePDG (for example, dynamic policies from PCRF), QoS control can be better implemented for business data flows. Summary of the invention
  • the main purpose of the present invention is to provide a method and system for establishing a session, which can solve the problem that the V-PCRF perceives the UE in the S2b-GTP scenario in the scenario that the protocol type used by the S2b interface is not considered.
  • the present invention also provides a method and system for issuing a policy, which can implement a dynamic policy on the ePDG to better implement QoS control on the service data flow.
  • a method of establishing a session comprising: The evolved packet data gateway (ePDG) establishes a Gxb session to the visited policy and charging rule function entity (V-PCRF);
  • ePDG evolved packet data gateway
  • V-PCRF visited policy and charging rule function entity
  • the V-PCRF obtains, by using a Gxb interface, a protocol type used by the S2b interface or whether the ePDG is a bearer binding and event reporting function entity (BBERF);
  • BBERF bearer binding and event reporting function entity
  • the V-PCRF determines whether it is necessary to establish an S9 session to the home policy and charging rule function entity (H-PCRF) according to the protocol type used by the S2b interface or whether the ePDG is a BBERF.
  • H-PCRF home policy and charging rule function entity
  • the V-PCRF obtains the protocol type used by the S2b interface or the ePDG as the BBERF through the Gxb interface, which is:
  • the ePDG sends a message to the V-PCRF through the Gxb interface, and uses the identifier or the indication carried in the message to notify the V-PCRF of the protocol type used by the S2b interface or the ePDG as a BBERF; or
  • the V-PCRF receives the message sent by the ePDG through the Gxb interface, and obtains the protocol type or the S2b interface used according to the IP address and/or the host name and/or the full name domain name (FQDN) information of the ePDG carried in the message. Whether ePDG is used as BBERF.
  • the V-PCRF determines whether it is necessary to establish an S9 session to the H-PCRF, which is:
  • the protocol type used by the S2b interface is Proxy Mobile IP (PMIP) or Mobile IP (DSMIP) supporting dual stack, or when the ePDG is used as a BBERF, it is determined that an S9 session needs to be established to the H-PCRF;
  • the type is GPRS Tunneling Protocol (GTP), or when the ePDG is not BBERF, it is determined that it is not necessary to establish an S9 session to the H-PCRF.
  • PMIP Proxy Mobile IP
  • DSMIP Mobile IP
  • GTP GPRS Tunneling Protocol
  • the method further includes: the V-PCRF establishing an S9 session to the H-PCRF.
  • the method further includes: the V-PCRF initiating the establishment of the S9* session to the BPCF.
  • the ePDG and the V-PCRF are located in the visited mobile network; the H-PCRF is located at the home ground Moving network; the BPCF is located in a fixed network.
  • a system for establishing a session comprising: an ePDG and a V-PCRF located in the visited mobile network, and an H-PCRF located in the home mobile network, where:
  • the ePDG is configured to establish a Gxb session to the V-PCRF;
  • the V-PCRF is configured to obtain, by using a Gxb interface, a protocol type used by the S2b interface, or whether the ePDG is used as a BBERF; and is further configured to determine, according to the protocol type used by the S2b interface, whether the ePDG is a BBERF, or not, -
  • the PCRF establishes an S9 session.
  • the ePDG is further configured to send a message to the V-PCRF through the Gxb interface, and notify the V-PCRF whether the protocol type used by the S2b interface or the ePDG is used as a BBERF by using an identifier or an indication carried by the message. Or,
  • the V-PCRF is further configured to receive, by using a Gxb interface, a message sent by the ePDG, and obtain a protocol type used by the S2b interface according to the IP address and/or the host name and/or the FQDN information of the ePDG carried by the message. Or whether the ePDG acts as a BBERF.
  • the V-PCRF is further configured to: when the protocol type used by the S2b interface is PMIP or DSMIP, or when the ePDG is used as a BBERF, determine that an S9 session needs to be established to the H-PCRF; and is also used in the S2b interface.
  • the protocol type used is GTP, or when the ePDG is not used as the BBERF, it is determined that it is not necessary to establish an S9 session to the H-PCRF;
  • the V-PCRF is further configured to establish an S9 session to the H-PCRF when determining that an S9 session needs to be established to the H-PCRF.
  • the system further includes: a broadband policy control function entity (BPCF) located in the fixed network; and correspondingly, the V-PCRF is further configured to establish an S9* session to the BPCF after establishing a Gxb session with the ePDG.
  • BPCF broadband policy control function entity
  • the invention also provides a method for issuing a policy, the method comprising:
  • ePDG establishes a Gxb session to the PCRF
  • the PCRF acquires a protocol type used by the S2b interface or the ePDG through the Gxb interface. Whether as BBERF;
  • the PCRF determines whether to send a QoS policy to the ePDG according to the protocol type used by the S2b interface or whether the ePDG is used as a BBERF.
  • the PCRF obtains the protocol type used by the S2b interface or the ePDG as the BBERF through the Gxb interface, which is:
  • the ePDG sends a message to the V-PCRF through the Gxb interface, and uses the identifier or the indication carried in the message to notify the PCRF whether the protocol type used by the S2b interface or the ePDG is the BBERF; or
  • the PCRF receives the message sent by the ePDG through the Gxb interface, and obtains the protocol type used by the S2b interface or the ePDG as the BBERF according to the IP address and/or the host name and/or the FQDN information of the ePDG carried by the message.
  • the PCRF determines whether to send a PCC policy to the ePDG, specifically:
  • the protocol type used by the S2b interface is PMIP or DSMIP, or when the ePDG is used as the BBERF
  • the PCC policy needs to be sent to the ePDG
  • the protocol type used by the S2b interface is GTP, or when the ePDG is not used as the BBERF
  • the QoS policy is not required to be delivered to the ePDG.
  • the PCRF sends a QoS policy to the ePDG.
  • the ePDG and PCRF are located in the home mobile network.
  • a policy-issued system comprising: an ePDG and a PCRF located in a home mobile network;
  • the ePDG is configured to establish a Gxb session to the PCRF;
  • the PCRF is configured to obtain, by using a Gxb interface, a protocol type used by the S2b interface, or whether the ePDG is used as a BBERF, or whether to determine whether to use the protocol type of the S2b interface or whether the ePDG is used as a BBERF to determine whether to go to the ePDG.
  • the ePDG is further configured to send a message to the PCRF by using a Gxb interface, and notify the PCRF whether the protocol type used by the S2b interface or the ePDG is used as a BBERF by using an identifier or an indication carried by the message; or
  • the PCRF is further configured to receive, by using a Gxb interface, a message sent by the ePDG, and obtain, according to an IP address and/or a host name and/or FQDN information of the ePDG carried by the message, a protocol type or a protocol used by the S2b interface. Whether ePDG is used as BBERF.
  • the PCRF is further configured to: when the protocol type used by the S2b interface is PMIP or DSMIP, or when the ePDG is used as a BBERF, determine that a QoS policy needs to be sent to the ePDG; and is further used to use the S2b interface.
  • the protocol type is GTP, or when the ePDG is not a BBERF, it is determined that the QoS policy is not required to be sent to the ePDG.
  • the PCRF is further configured to send a QoS policy to the ePDG when determining that a QoS policy needs to be sent to the ePDG.
  • the present invention establishes a session scheme:
  • the ePDG establishes a Gxb session to the V-PCRF without considering the protocol type used by the S2b interface, that is, regardless of whether the ePDG is used as a BBERF, but is used according to the S2b interface after the Gxb session.
  • the protocol type, or whether the ePDG is used as the BBERF to determine whether to establish an S9 session to the H-PCRF.
  • the V-PCRF can not only perceive the UE's access, but also the S9 session will not be established, avoiding Impact on H-PCRF processing mechanisms.
  • the ePDG in a non-roaming scenario, does not consider the protocol type used by the S2b interface when establishing a Gxb session to the V-PCRF, that is, whether the ePDG is used as a BBERF or not, but is based on the Gxb session. Whether the protocol type used by the S2b interface or the ePDG is used as the BBERF to determine whether to deliver the QoS policy to the ePDG. Therefore, dynamic policies can be executed on the ePDG (for example, dynamic policies formulated by the PCRF), and the service data can be better.
  • the flow implements QoS control.
  • Figure 1 is a schematic diagram of an EPS system architecture
  • Figure 2 is a schematic diagram of the BBF BPCF architecture
  • FIG. 3 is a schematic diagram of a UE accessing an EPS core network through an MLAN
  • Figure 4 is a schematic diagram of a Home Routed roaming scenario
  • Figure 5 is a schematic diagram of a Local Breakout roaming scenario
  • Figure 6 is a schematic diagram of the S2b-GTP Home Routed roaming scenario
  • Figure 7 is a schematic diagram of a S2b-GTP Local Breakout roaming scenario
  • FIG. 8 is a schematic flowchart of a method for establishing a session in a roaming scenario
  • FIG. 9 is a schematic flowchart of establishing a session in a roaming scenario in Embodiment 1;
  • Figure 10 is a schematic flowchart of a method for sending a policy in a non-roaming scenario
  • FIG. 11 is a schematic flowchart of a policy delivery process in a non-roaming scenario in the second embodiment. detailed description
  • the ePDG does not consider the protocol type used by the S2b interface when establishing a Gxb session to the V-PCRF, that is, whether the ePDG is used as the BBERF or not, but is based on the S2b after the Gxb session. Whether the protocol type used by the interface or the ePDG is used as the BBERF to determine whether to establish an S9 session to the H-PCRF. As shown in Figure 8, the method includes:
  • Step 801 The ePDG establishes a Gxb session to the V-PCRF, and the V-PCRF obtains the protocol type used by the S2b interface or the ePDG as the BBERF through the Gxb interface.
  • Step 802 The V-PCRF determines whether the S9 session needs to be established to the H-PCRF according to the protocol type used by the S2b interface or whether the ePDG is used as the BBERF.
  • Embodiment 1 The process of establishing a session in the roaming scenario of the present invention is as shown in FIG. 9, and includes:
  • Steps 901 to 902 when the UE accesses the visited mobile network through the fixed network, if the fixed network can perceive the access of the UE, the access authentication of the visited mobile network is performed, and the BRAS/BNG and BBF AAA agents of the fixed network are used. (Proxy) and the 3GPP AAA server of the home mobile network participate in the authentication process, and the specific implementation of the authentication process is a prior art, and details are not described herein again.
  • step 902 is performed, the BRAS/BNG allocates an IP address to the UE, and then step 904 is performed.
  • step 901 and 902 are skipped, and step 903 is performed, and step 904 is performed.
  • Step 903 When the UE accesses the visited mobile network through the fixed network, the RG of the fixed network allocates an IP address to the UE (the above authentication process is not required).
  • Step 904 After the UE obtains the IP address, the UE and the ePDG establish an IP security tunnel. At the same time, the ePDG requests the 3GPP AAA server of the home mobile network to request authentication and authorization of the UE. At the same time of authentication and authorization, the 3GPP AAA server will visit the mobile network.
  • the IP address of the P-GW is returned to the ePDG, so that the ePDG establishes a connection according to the IP address and the P-GW, and the type of the protocol used by the S2b interface between the ePDG and the P-GW can be determined, thereby determining whether the ePDG can be used as the BBERF. 0
  • Step 905 the ePDG establishes a Gxb session to the V-PCRF, and the session is established to notify the V-PCRF of the user access information.
  • the user access information is carried in the message and sent to the V-PCRF through the Gxb interface;
  • the V-PCRF obtains the protocol type used by the S2b interface between the ePDG and the P-GW through the Gxb interface or whether the ePDG is used as the BBERF.
  • the V-PCRF obtains the protocol type used by the S2b interface through the Gxb interface or whether the ePDG is used as the BBERF mode: display mode and implicit mode, where
  • the display mode is:
  • the above message sent by the ePDG to the V-PCRF through the Gxb interface carries an identifier or an indication, and the protocol type or the ePDG used by the S2b interface is notified to the V-PCRF as the BBERF by using the identifier or the indication (the ePDG acts as the BBERF, The type of protocol used by S2b For PMIP or DSMIP; ePDG does not act as BBERF, then the protocol type used by S2b is GTP); implicitly: V-PCRF is based on the received IP address and/or host name and/or full name of ePDG carried in the above message.
  • the FQDN (Full Qualified Domain Name) information is used to obtain the protocol type used by the S2b interface or whether the ePDG acts as a BBERF.
  • a configuration table is saved in the V-PCRF, according to the IP address and/or host name of the ePDG.
  • the FQDN information may be used to find the protocol type used by the corresponding S2b interface from the configuration table or whether the ePDG acts as a BBERF; or, the V-PCRF generates one according to the IP address and/or host name and/or FQDN information of the ePDG.
  • the request message requests a query from the DNS or other server that holds the above configuration table, obtains the protocol type used by the corresponding S2b interface, or whether the ePDG acts as a BBERF.
  • the message sent by the ePDG to the V-PCRF informs the V-PCRF of the user access information, so that the V-PCRF senses the access of the UE.
  • Step 906 The V-PCRF determines whether an S9 session is established to the H-PCRF of the home mobile network. Specifically, if the protocol type used by the S2b interface is PMIP or DSMIP, or ePDG is used as the BBERF, the S9 session needs to be established to the H-PCRF of the home mobile network. Steps 908-909 are performed; if the protocol type used by the S2b interface If it is GTP, or ePDG is not BBERF, there is no need to establish an S9 session to the H-PCRF.
  • Step 907 The V-PCRF returns a response to the ePDG.
  • the V-PCRF can send the QoS policy to the ePDG through the response, and the step can also be performed concurrently with the step 906.
  • Step 908 When an S9 session needs to be established to the H-PCRF of the home mobile network, the V-PCRF establishes an S9 session to the H-PCRF.
  • Step 909 The H-PCRF returns a response to the V-PCRF, and the response may carry a PCC policy.
  • Step 910 If the V-PCRF needs to modify the PCC policy, for example, the H-PCRF is issued.
  • the PCC policy causes the V-PCRF to modify the PCC policy, or needs to be modified for other reasons.
  • the V-PCRF initiates a Gxb session to the ePDG; the ePDG responds to the session.
  • Step 911 the V-PCRF establishes an S9* session to the BPCF in the fixed network.
  • step 912 the BPCF returns a response to the V-PCRF.
  • Steps 911-912 may also be performed after step 905, that is, the V-PCRF and the ePDG establish a Gxb session. Afterwards, the V-PCRF initiates the establishment of an S9* session to the BPCF.
  • the present invention provides a system for establishing a session, including: an ePDG and a V-PCRF located in the visited mobile network, and an H-PCRF located in the home mobile network, where:
  • ePDG used to establish a Gxb session to the V-PCRF
  • the V-PCRF is used to obtain the protocol type used by the S2b interface or the ePDG as the BBERF through the Gxb interface. It is also used to determine whether the S9 session needs to be established to the H-PCRF according to the protocol type used by the S2b interface or whether the ePDG is used as the BBERF.
  • the ePDG is further configured to send a message to the V-PCRF through the Gxb interface, and notify the V-PCRF whether the protocol type used by the S2b interface or the ePDG is the BBERF by using the identifier or the indication carried in the message; or
  • the V-PCRF is further configured to receive the message sent by the ePDG through the Gxb interface, and obtain the protocol type used by the S2b interface or the ePDG as the BBERF according to the IP address and/or the host name and/or the FQDN information of the ePDG carried in the message.
  • the V-PCRF is also used to determine whether the S9 session needs to be established to the H-PCRF when the protocol type used by the S2b interface is PMIP or DSMIP, or when the ePDG is used as the BBERF. Or when the ePDG is not used as the BBERF, it is determined that it is not necessary to establish an S9 session to the H-PCRF;
  • the V-PCRF is further configured to establish an S9 session to the H-PCRF when it is determined that an S9 session needs to be established to the H-PCRF.
  • the system also includes: a BPCF located in the fixed network; correspondingly,
  • the V-PCRF is also used to establish an S9* session to the BPCF after establishing a Gxb session with the ePDG.
  • the above-mentioned technology for establishing a session in a roaming scenario can also be applied to a non-roaming scenario, which is used to enable the PCRF to deliver a QoS policy to the ePDG.
  • the specific process is as shown in FIG. 10, including:
  • Step 1001 The ePDG establishes a Gxb session to the PCRF, and the PCRF obtains the protocol type used by the S2b interface or the ePDG as a BBERF through the Gxb interface.
  • Step 1002 The PCRF determines whether to send a QoS policy to the ePDG according to the protocol type used by the S2b interface or whether the ePDG is used as the BBERF.
  • both ePDG and PCRF refer to devices in the home mobile network.
  • the method delivered by the strategy will be described below by using specific embodiments.
  • the flow of the QoS policy sent by the PCRF to the ePDG in the non-roaming scenario is as shown in FIG. 11, and includes:
  • Steps 1101 to 1102 When the UE accesses the home mobile network through the fixed network, if the fixed network can perceive the access of the UE, the access authentication of the home mobile network is performed, and the BRAS/BNG and BBF AAA agents of the fixed network are used.
  • the (Proxy) and the 3GPP AAA server of the home mobile network participate in the authentication process, and the specific implementation of the authentication process is a prior art, and details are not described herein again.
  • step 10022 is performed, the BRAS/BNG allocates an IP address to the UE, and then step 1104 is performed.
  • step 1101 If the fixed network cannot detect the access of the UE, step 1101, 1102 is skipped, step 1003 is performed, and then step 1104 is performed.
  • Step 1103 When the UE accesses the home mobile network through the fixed network, the RG of the fixed network allocates an IP address to the UE (the above authentication process is not required).
  • Step 1104 After obtaining the IP address, the UE establishes an IP security tunnel with the ePDG, and the ePDG requests the 3GPP AAA server of the home mobile network to request authentication and authorization of the UE. At the same time as the authorization, the 3GPP AAA server returns the IP address of the P-GW of the home mobile network to the ePDG, so that the ePDG establishes a connection according to the IP address and the P-GW, and can determine the S2b interface between the ePDG and the P-GW.
  • the type of protocol is available to determine if ePDG can be used as BBERF 0
  • Step 1105 The ePDG establishes a Gxb session to the PCRF.
  • the session is established to notify the PCRF of the user access information.
  • the user access information is carried in the message and sent to the PCRF through the Gxb interface. Meanwhile, the PCRF is obtained through the Gxb interface.
  • the protocol type used by the S2b interface between the ePDG and the P-GW or ePDG is BBERF.
  • step 905 The specific implementation is the same as step 905, and details are not described herein again.
  • Step 1106 The PCRF determines whether a QoS policy needs to be sent to the ePDG.
  • the QoS policy needs to be sent to the ePDG. If the protocol type used by the S2b interface is GTP, or the ePDG is not used as the BBERF, the ePDG is not required. The QoS policy is delivered.
  • Step 1107 When the QoS policy needs to be sent to the ePDG, the response returned by the PCRF to the ePDG carries the QoS policy. When the QoS policy is not sent to the ePDG, the response returned by the PCRF to the ePDG does not carry the QoS policy.
  • Step 1108 When the QoS policy changes, the PCRF notifies the ePDG to update the policy, which can be implemented through a Gxb session.
  • the present invention provides a policy delivery system, including: ePDG and PCRF located in a home mobile network;
  • ePDG used to establish a Gxb session to the PCRF
  • the PCRF is used to obtain the protocol type used by the S2b interface through the Gxb interface, or whether the ePDG is used as the BBERF. It is also used to determine whether to send the QoS policy to the ePDG according to the protocol type used by the S2b interface or whether the ePDG is used as the BBERF.
  • the ePDG is also used by the Gxb interface to send a message to the PCRF, and the identifier carried by the message or Indicates whether the protocol type used by the S2b interface or ePDG is notified to the PCRF as a BBERF; or
  • the PCRF is also used to receive the message sent by the ePDG through the Gxb interface, and obtain the protocol type used by the S2b interface or the ePDG as the BBERF according to the IP address and host name and/or FQDN information of the ePDG carried in the message.
  • the PCRF is also used when the protocol type used by the S2b interface is PMIP or DSMIP, or when the ePDG is used as the BBERF, the QoS policy needs to be sent to the ePDG.
  • the protocol type used by the S2b interface is GTP, or the ePDG is not used.
  • the BBERF it is determined that the QoS policy is not required to be sent to the ePDG.
  • the PCRF is also used to deliver a PCC policy to the ePDG when it is determined that the QoS policy needs to be sent to the ePDG.

Description

一种建立会话、 策略下发的方法和系统 技术领域
本发明涉及移动通信领域, 特别是指一种建立会话、 策略下发的方法 和系统。 背景技术
第三代合作伙伴计划 ( 3GPP, 3rd Generation Partnership Project )演进 的分组系统( EPS , Evolved Packet System ) 由演进的通用移动通信系统陆 地无线接入网 (E-UTRAN , Evolved Universal Terrestrial Radio Access Network ), 移动管理单元(MME, Mobility Management Entity )、 服务网关 ( S-GW , Serving Gateway ), 分组数据网络网关 (Packet Data Network Gateway, 简称为 P-GW或者 PDN GW )、 归属用户服务器(HSS, Home Subscriber Server ) , 3 GPP 的认证授权计费 ( AAA , Authentication , Authorization and Accounting )服务器、策略和计费规则功能( PCRF, Policy and Charging Rules Function ) 实体及其他支撑节点组成。
图 1是根据相关技术的 EPS的系统架构的示意图,其中, MME负责移 动性管理、 非接入层信令的处理和用户移动管理上下文的管理等控制面的 相关工作; S-GW是与 E-UTRAN相连的接入网关设备, 在 E-UTRAN和 P-GW之间转发数据, 并且负责对寻呼等待数据进行緩存; P-GW则是 EPS 与分组数据网络( PDN , Packet Data Network )网络的边界网关, 负责 PDN 的接入及在 EPS与 PDN间转发数据等功能; S-GW和 P-GW都属于核心网 网关; PCRF通过接收接口 R 和运营商网络协议 ( IP, Internet Protocol ) 业务网络相连, 获取业务信息, 此外, 它通过 Gx/Gxa/Gxc接口与网络中的 网关设备相连, 负责发起 IP承载的建立, 保证业务数据的服务质量(QoS, Quality of Service ) , 并进行计费控制。
EPS支持与非 3GPP系统的互通, 其中, 与非 3GPP系统的互通通过 S2a/b/c接口实现, P-GW作为 3GPP与非 3GPP系统间的锚点。 在 EPS的 系统架构图中, 非 3GPP系统被分为可信任非 3GPP IP接入和不可信任非 3GPP IP接入。 可信任非 3GPP IP接入可直接通过 S2a接口与 P-GW连接; 不可信任非 3GPP IP接入需经过演进的分组数据网关( ePDG, Evolved Packet Data Gateway ) 与 P-GW相连, ePDG与 P-GW间的接口为 S2b; S2c提供 了用户设备 ( UE , User Equipment )与 P-GW之间的用户面相关的控制和 移动性支持, 其支持的移动性管理协议为支持双栈的移动 IPv6 (DSMIPv6, Moblie IPv6 Support for Dual Stack Hosts and Routers)。
在 EPS系统之中, 策略和计费执行功能(PCEF, Policy and Charging Enforcement Function ) 实体存在于 P-GW中, PCRF与 P-GW之间通过 Gx 接口(见图 1 )交换信息。当 P-GW与 S-GW间的接口 S5基于 PMIPv6( Proxy Mobile IPv6, 代理移动 IP协议版本 6 ) 时, S-GW也具有承载绑定和事件 才艮告功能 ( BBERF, Bearer Binding and Event Report Function ) 实体对业务 数据流进行 QoS控制, S-GW与 PCRF之间通过 Gxc接口 (见图 1 ) 交换 信息。 当通过可信任非 3GPP接入系统接入时, 可信任非 3GPP接入网关中 也驻留 BBERF。 可信任非 3GPP接入网关与 PCRF之间通过 Gxa接口 (见 图 1 )交换信息。 当 UE漫游时, S9接口作为归属地 PCRF和拜访地 PCRF 之间的接口, 为 UE提供业务应用功能( AF, Application Function ), UE通 过 Rx接口向 PCRF发送用于制定策略和计费控制( PCC, Policy and Charging Control )策略的业务信息。在 3GPP中,通过接入点名称( APN, Access Point Name )可以找到对应的 PDN网络。 通常将 UE到 PDN网络的一个连接称 为一个 IP连接接入网 (IP-CAN, IP Connectivity Access Network )会话。 在 建立 IP-CAN 会话的过程中, BBERF 和 PCEF 分别与 PCRF之间建立 Diameter会话, 通过这些 Diameter会话来传送对这个 IP-CAN会话进行控 制的策略计费信息和用于制定策略的信息等。
宽带论坛(BBF, Broadband Forum )提出了宽带策略控制架构的宽带 策略控制功能(BPCF, Broadband Policy Control Function ), 如图 2所示, BPCF主要功能是制定相应的策略; 策略执行点 (PEP, Policy Enforcement Point ) 通常驻留在固网传输设备中, 例如: 宽带接入服务器 (BRAS , Broadband Remote Access Server ) /宽带网网关 ( BNG, Broadband Network Gateway ), 执行 BPCF制定的相应策略; AAA储存用户签约信息; AF为 BPCF制定策略, 提供相应的业务信息。 目前 BPCF的架构还比较粗略, 相 关细节还在进一步的制定中。
现在运营商很关注的固网移动融合 ( FMC, Fixed Mobile Convergence ) 场景, 就是基于对 3GPP和 BBF互联互通进行研究。 对于用户通过 BBF固 网接入移动核心网的场景, 是需要对整个数据的路由路径(数据会经过固 网和移动网传输)上的 QoS进行保证的, 现阶段采用 S9* ( PCRF和 BPCF 之间)接口方式进行。 移动运营商为了更好的运营业务, 扩大无线的覆盖, 从节约成本的角度考虑, 会去租用固网运营商的一段 WLAN接入的线路; UE通过固网的 WLAN接入, 由于这个数据的传输会经过固网, 当移动运 营商会将固网运营商视为不可信任的网络时, UE会和 ePDG建立 IP Sec( IP 安全)隧道,如图 3所示,这样保证 UE到 ePDG之间的传输的数据被加密, 固网传输设备无法得知传输的内容。 根据实际固网网络的部署情况, 固网 可能感知不到移动用户的接入,例如:当用户通过家庭网关(RG, Residential Gateway )接入时, RG屏蔽了用户接入。 对于这种场景, ePDG需要将 UE 的接入信息 (例如: IP-sec隧道信息和 /或 UE 固网接入 ID等信息)告知 PCRF, 再由 PCRF通过 S9*告知 BPCF, BPCF根据 UE的接入信息故接纳 控制, 保证数据在固网传输的 QoS; 后续的讨论就是基于固网无法感知 UE 接入的情况。
上述的讨论是在 FMC非漫游场景下 ,对于漫游场景下也是需要考虑的 , 例如: 中国移动的用户来到英国, 由于英国 Vodafone运营商和中国移动有 漫游协议保证, 中国移动的用户是可以在英国漫游的; 同时, Vodafone和 英国电信( BT , Britain Telecom )之间有 FMC协议, 此时允许中国移动用 户通过 BT的固网 (例如 WLAN无线局域网 )接入到 Vodafone的移动网。
根据漫游场景数据路由的路径不同, 漫游场景分为 Home Routed 和 Local Breakout 2种方式, 如图 4和 5所示。 Home Routed漫游场景下, 数 据从归属地的 P-GW出去; 而对于 Local Breakout漫游场景下,数据可以由 拜访地的 P-GW直接路由出去(允许的情况下,相比 Home Routed, 可以减 少数据路由迂回的消耗)。
对于 S2b接口( ePDG和 P-GW之间)而言, 目前存在两类可选的协议, 一类是 PMIP和 DSMIP协议; 一类是 GPRS 隧道协议(GTP )协议, 现有 的方案中:
对于 S2b-PMIP/DSMIP的场景, ePDG充当 BBERF的角色, ePDG会 向拜访地 PCRF ( V-PCRF )建立 Gxb会话 (该会话是通过 Gxb接口来传输 数据的, 简称为 Gxb会话), ePDG可以将用户的接入信息通过 Gxb传递给 V-PCRF, 进而会触发 V-PCRF向 BPCF建立 S9* (接口)会话和向归属地 PCRF ( H-PCRF )建立 S9会话。
但对于 S2b-GTP的场景, 根据 GTP协议的特点, ePDG此时不会充当 BBERF的角色, ePDG和 V-PCRF没有 Gxb会话(如图 6和 7所示), ePDG 无法通过 Gxb接口将用户的接入信息传递给 V-PCRF; 进一步的, 在 Home Routed漫游场景下, V-PCRF在没有 Gxb会话的触发下, 是无法感知 UE 的接入, 不会触发 V-PCRF向 BPCF建立 S9*会话, 如图 6所示; 但 Local Breakout漫游场景下,即使没有 Gxb会话, S9*会话的建立仍然可以由 P-GW 通过 Gx接口触发 V-PCRF, 如图 7所示。
对于上述不同的漫游场景带来的问题,有人提出 ePDG向 V-PCRF建立 Gxb会话时可以不考虑协议类型,也就是说,即使在 S2b-GTP场景下, ePDG 也会向 V-PCRF建立 Gxb会话。 这样 ePDG可以通过 Gxb接口携带用户接 入信息, 同时 V-PCRF收到触发, 感知 UE接入, 向 BPCF建立 S9*会话。
如果按照上述的方案, 又会带来新的问题, 现有的 S9机制: V-PCRF 收到来自 ePDG的消息后,会被触发向 H-PCRF建立 S9会话;对于 S2b-PMIP 场景, S9会话的建立是有必要的(此时 ePDG作为 BBERF ),而对于 S2b-GTP 的场景, S9会话的建立是没必要的 (ePDG不作为 BBERF ), 而且还会对 现有的 H-PCRF处理机制产生影响, 如何能够在不影响 H-PCRF处理机制 的情况下解决该问题, 是本发明的所研究的重点。
另外, 对于非漫游场景, 目前的技术中, ePDG执行的 QoS策略是静 态的, 即运营商通过配置的方式(例如: 通过网关配置平台, 在 ePDG上 电时配置静态策略) 来实现, 因此对于数据流的控制来说不够精确。 如果 能在 ePDG上执行动态的策略(例如: 来自 PCRF制定的动态策略), 能够 更好的对业务数据流实现 QoS控制。 发明内容
有鉴于此, 本发明的主要目的在于提供一种建立会话的方法和系统, 能够解决在不考虑 S2b接口所使用的协议类型的场景下, 当 V-PCRF在 S2b-GTP场景下感知到 UE的接入时,由于 S9会话的建立导致的对 H-PCRF 处理机制产生影响的问题;
本发明还提供了一种策略下发的方法和系统, 能够在 ePDG上执行动 态的策略, 更好的对业务数据流实现 QoS控制。
为了实现上述目的, 本发明的技术方案是这样实现的:
一种建立会话的方法, 该方法包括: 演进的分组数据网关 (ePDG ) 向拜访地策略和计费规则功能实体 ( V-PCRF )建立 Gxb会话;
所述 V-PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG是否作为承载绑定和事件报告功能实体( BBERF );
所述 V-PCRF依据所述 S2b接口使用的协议类型或者所述 ePDG是否 作为 BBERF判断是否需要向归属地策略和计费规则功能实体(H-PCRF ) 建立 S9会话。
其中, 所述 V-PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者 所述 ePDG是否作为 BBERF, 为:
所述 ePDG通过 Gxb接口向 V-PCRF发送消息, 并通过所述消息携带 的标识或指示,将 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF 告知所述 V-PCRF; 或者,
所述 V-PCRF通过 Gxb接口接收 ePDG发送的消息, 并根据所述消息 携带的所述 ePDG的 IP地址和 /或主机名称和 /或全称域名 ( FQDN )信息获 取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
所述 V-PCRF判断是否需要向 H-PCRF建立 S9会话, 为:
当 S2b接口使用的协议类型为代理移动 IP ( PMIP )或支持双栈的移动 IP ( DSMIP )时, 或者所述 ePDG作为 BBERF时, 判定需要向 H-PCRF建 立 S9会话; 当 S2b接口使用的协议类型为 GPRS 隧道协议 ( GTP )时, 或 者所述 ePDG不作为 BBERF时, 判定不需要向 H-PCRF建立 S9会话。
所述判定需要向 H-PCRF建立 S9会话时, 该方法进一步包括: 所述 V-PCRF向所述 H-PCRF建立 S9会话。
所述 ePDG向 V-PCRF建立 Gxb会话之后,该方法还包括:所述 V-PCRF 向 BPCF发起 S9*会话的建立。
所述 ePDG和 V-PCRF位于拜访地移动网;所述 H-PCRF位于归属地移 动网; 所述 BPCF位于固网。
一种建立会话的系统, 该系统包括: 位于拜访地移动网的 ePDG 和 V-PCRF, 和位于归属地移动网的 H-PCRF, 其中:
所述 ePDG , 用于向所述 V-PCRF建立 Gxb会话;
所述 V-PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型或者 所述 ePDG是否作为 BBERF; 还用于依据所述 S2b接口使用的协议类型或 者所述 ePDG是否作为 BBERF判断是否需要向 H-PCRF建立 S9会话。
所述 ePDG,还用于通过 Gxb接口向所述 V-PCRF发送消息, 并通过所 述消息携带的标识或指示, 将 S2b接口使用的协议类型或者所述 ePDG是 否作为 BBERF告知所述 V-PCRF; 或者,
所述 V-PCRF,还用于通过 Gxb接口接收所述 ePDG发送的消息,并根 据所述消息携带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获 取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
所述 V-PCRF, 还用于在所述 S2b 接口使用的协议类型为 PMIP 或 DSMIP时, 或者所述 ePDG作为 BBERF时, 判定需要向 H-PCRF建立 S9 会话; 还用于在所述 S2b接口使用的协议类型为 GTP时, 或者所述 ePDG 不作为 BBERF时, 判定不需要向 H-PCRF建立 S9会话;
相应的, 所述 V-PCRF, 还用于在判定需要向 H-PCRF建立 S9会话时, 向所述 H-PCRF建立 S9会话。
该系统还包括: 位于固网的宽带策略控制功能实体(BPCF ); 相应的, 所述 V-PCRF,还用于在和所述 ePDG建立 Gxb会话之后,向所述 BPCF 建立 S9*会话。
本发明还提供了一种策略下发的方法, 该方法包括:
ePDG向 PCRF建立 Gxb会话;
所述 PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG 是否作为 BBERF;
所述 PCRF依据所述 S2b接口使用的协议类型或者所述 ePDG是否作 为 BBERF判断是否向所述 ePDG下发 QoS策略。
其中, 所述 PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者所 述 ePDG是否作为 BBERF, 为:
所述 ePDG通过 Gxb接口向 V-PCRF发送消息, 并通过所述消息携带 的标识或指示,将 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF 告知所述 PCRF; 或者,
所述 PCRF通过 Gxb接口接收 ePDG发送的消息, 并根据所述消息携 带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获取 S2b接口使 用的协议类型或者所述 ePDG是否作为 BBERF。
所述 PCRF判断是否向所述 ePDG下发 PCC策略, 具体为:
当 S2b接口使用的协议类型为 PMIP或 DSMIP时, 或者所述 ePDG作 为 BBERF时, 判定需要向 ePDG下发 PCC策略; 当 S2b接口使用的协议 类型为 GTP时, 或者所述 ePDG不作为 BBERF时, 判定不需要向 ePDG 下发 QoS策略。
所述判定需要向 ePDG下发 PCC策略时, 所述 PCRF向所述 ePDG下 发 QoS策略。
所述 ePDG和 PCRF位于归属地移动网。
一种策略下发的系统, 该系统包括: 位于归属地移动网的 ePDG 和 PCRF; 其中,
所述 ePDG , 用于向所述 PCRF建立 Gxb会话;
所述 PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型或者所 述 ePDG是否作为 BBERF; 还用于依据所述 S2b接口使用的协议类型或者 所述 ePDG是否作为 BBERF判断是否向所述 ePDG下发 QoS策略。 所述 ePDG,还用于通过 Gxb接口向所述 PCRF发送消息 ,并通过所述 消息携带的标识或指示, 将 S2b接口使用的协议类型或者所述 ePDG是否 作为 BBERF告知所述 PCRF; 或者,
所述 PCRF,还用于通过 Gxb接口接收所述 ePDG发送的消息,并根据 所述消息携带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
所述 PCRF,还用于在所述 S2b接口使用的协议类型为 PMIP或 DSMIP 时,或者所述 ePDG作为 BBERF时,判定需要向所述 ePDG下发 QoS策略; 还用于在所述 S2b接口使用的协议类型为 GTP时, 或者所述 ePDG不作为 BBERF时, 判定不需要向所述 ePDG下发 QoS策略;
相应的, 所述 PCRF, 还用于在判定需要向所述 ePDG下发 QoS策略 时, 向所述 ePDG下发 QoS策略。
本发明建立会话方案中: 在漫游场景下, ePDG向 V-PCRF建立 Gxb 会话时不考虑 S2b接口使用的协议类型、即不考虑 ePDG是否作为 BBERF, 而是在 Gxb会话后根据才根据 S2b接口使用的协议类型、 或者 ePDG是否 作为 BBERF来确定是否向 H-PCRF建立 S9会话, 如此, 在 S2b-GTP场景 下 V-PCRF不仅可以感知到 UE的接入, 而且 S9会话也不会建立, 避免了 对 H-PCRF处理机制产生的影响。
本发明策略下发的方案中: 在非漫游场景下, ePDG 向 V-PCRF建立 Gxb 会话时不考虑 S2b接口使用的协议类型、 即不考虑 ePDG是否作为 BBERF, 而是在 Gxb会话后根据才根据 S2b接口使用的协议类型、 或者 ePDG是否作为 BBERF来确定是否向 ePDG下发 QoS策略,如此,能在 ePDG 上执行动态的策略(例如: 来自 PCRF制定的动态策略), 能够更好的对业 务数据流实现 QoS控制。 附图说明
图 1为 EPS系统架构示意图;
图 2为 BBF BPCF架构示意图;
图 3为 UE通过 MLAN接入 EPS核心网示意图;
图 4为 Home Routed漫游场景示意图;
图 5为 Local Breakout漫游场景示意图;
图 6为 S2b-GTP Home Routed漫游场景示意图;
图 7为 S2b-GTP Local Breakout漫游场景示意图;
图 8为漫游场景下建立会话的方法流程示意图;
图 9为实施例一漫游场景下建立会话的流程示意图;
图 10为非漫游场景下策略下发的方法流程示意图;
图 11为实施例二非漫游场景下策略下发的流程示意图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 本发明建立会话的主要思想是: 在漫游场景下, ePDG向 V-PCRF建立 Gxb 会话时不考虑 S2b接口使用的协议类型、 即不考虑 ePDG是否作为 BBERF,而是在 Gxb会话后根据才根据 S2b接口使用的协议类型或者 ePDG 是否作为 BBERF来确定是否向 H-PCRF建立 S9会话, 具体如图 8所示, 包括:
步驟 801 , ePDG向 V-PCRF建立 Gxb会话, V-PCRF通过 Gxb接口获 取 S2b接口使用的协议类型或者 ePDG是否作为 BBERF;
步驟 802, V-PCRF依据 S2b接口使用的协议类型或者 ePDG是否作为 BBERF判断是否需要向 H-PCRF建立 S9会话。
下面通过具体的实施例来说明上述技术方案。
实施例一 本发明漫游场景下建立会话的流程如图 9所示, 包括:
步驟 901~902, UE通过固网接入拜访地移动网时, 如果固网能感知到 UE的接入, 则进行拜访地移动网的接入认证, 则固网的 BRAS/BNG、 BBF AAA代理( Proxy )和归属地移动网的 3GPP AAA服务器参与该认证过程, 该认证过程的具体实现为现有技术, 此处不再赘述。 认证完成后, 执行步 驟 902, BRAS/BNG为 UE分配 IP地址, 然后执行步驟 904。
如果固网无法感知到 UE的接入,则跳过步驟 901、 902,执行步驟 903, 在执行步驟 904。
步驟 903 , UE通过固网接入拜访地移动网时, 固网的 RG向 UE分配 IP地址(不需要进行上述的认证过程)。
步驟 904, UE获得 IP地址后, UE和 ePDG建立 IP安全隧道, 同时, ePDG向归属地移动网的 3GPPAAA服务器请求 UE的认证和授权,在认证 和授权的同时, 3GPP AAA服务器将拜访地移动网的 P-GW的 IP地址返回 给 ePDG,如此 ePDG根据该 IP地址和 P-GW建立连接, 就可以确定 ePDG 和 P-GW之间 S2b接口使用的协议类型了、 即可以确定 ePDG是否可以作 为 BBERF0
步驟 905, ePDG向 V-PCRF建立 Gxb会话, 该会话的建立就是为了将 用户接入信息告知 V-PCRF, 具体的, 将用户接入信息携带在消息中通过 Gxb接口发送给 V-PCRF;同时, V-PCRF通过 Gxb接口获取 ePDG和 P-GW 之间的 S2b接口使用的协议类型或者 ePDG是否作为 BBERF。
其中, V-PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者 ePDG 是否作为 BBERF的方式有: 显示方式和隐式方式, 其中,
显示方式为: ePDG通过 Gxb接口向 V-PCRF发送的上述消息中带有标 识或指示, 通过该标识或指示, 将 S2b接口使用的协议类型或者 ePDG是 否作为 BBERF告知 V-PCRF ( ePDG充当 BBERF, 则 S2b使用的协议类型 为 PMIP或 DSMIP; ePDG不充当 BBERF,则 S2b使用的协议类型为 GTP ); 隐式方式为: V-PCRF根据收到的上述消息中携带的 ePDG的 IP地址 和 /或主机名称和 /或全称域名 ( FQDN, Fully Qualified Domain Name )信息, 来获取 S2b接口使用的协议类型或者该 ePDG是否充当 BBERF, 具体的, V-PCRF 中保存了一张配置表, 根据 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息可以从该配置表中查找到对应的 S2b接口使用的协议类型或者 该 ePDG是否充当 BBERF; 或者, V-PCRF根据 ePDG的 IP地址和 /或主机 名称和 /或 FQDN信息生成一个请求消息, 向 DNS或其他保存有上述配置 表的服务器请求查询、获取对应的 S2b接口使用的协议类型、或者该 ePDG 是否充当 BBERF。
上述 ePDG向 V-PCRF发送的消息将用户接入信息告知 V-PCRF, 如此 V-PCRF就感知到了 UE的接入。
步驟 906 , V-PCRF判断是否向归属地移动网的 H-PCRF建立 S9会话。 具体的,如果 S2b接口使用的协议类型为 PMIP或 DSMIP,或者 ePDG 作为 BBERF, 则需要向归属地移动网的 H-PCRF建立 S9会话, 此时执行 步驟 908~909; 如果 S2b接口使用的协议类型为 GTP, 或者 ePDG不作为 BBERF, 则不需要向 H-PCRF建立 S9会话。
步驟 907 , V-PCRF向 ePDG返回响应。
V-PCRF可以通过该响应将 QoS策略下发给 ePDG,该步驟也可以和步 驟 906并发执行。
步驟 908, 需要向归属地移动网的 H-PCRF建立 S9会话时, V-PCRF 向 H-PCRF建立 S9会话;
步驟 909 , H-PCRF向 V-PCRF返回响应, 该响应可能携带 PCC策略。 步驟 910, 如果 V-PCRF需要修改 PCC策略时, 例如 H-PCRF下发了
PCC策略导致 V-PCRF需要修改 PCC策略时、 或者由于其他原因需要修改 PCC策略时, V-PCRF向 ePDG发起 Gxb会话; ePDG响应该会话。
步驟 911 , V-PCRF向固网中的 BPCF建立 S9*会话。
步驟 912, BPCF向 V-PCRF返回响应。
需要指出的是,在该实施例中 S9*会话的建立是必需的,不需要 V-PCRF 进行判断,则步驟 911~912也可以在步驟 905之后进行、即 V-PCRF和 ePDG 建立了 Gxb会话后, V-PCRF向 BPCF发起 S9*会话的建立。
为了实现上述会话建立方法, 本发明提供了一种建立会话的系统, 包 括:位于拜访地移动网的 ePDG和 V-PCRF、和位于归属地移动网的 H-PCRF, 其中:
ePDG, 用于向 V-PCRF建立 Gxb会话;
V-PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型或者 ePDG 是否作为 BBERF; 还用于依据 S2b接口使用的协议类型或者 ePDG是否作 为 BBERF判断是否需要向 H-PCRF建立 S9会话。
ePDG, 还用于通过 Gxb接口向 V-PCRF发送消息, 并通过消息携带的 标识或指示,将 S2b接口使用的协议类型或者 ePDG是否作为 BBERF告知 V-PCRF; 或者
V-PCRF, 还用于通过 Gxb接口接收所述 ePDG发送的消息, 并根据消 息携带的 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获取 S2b接口使 用的协议类型或者 ePDG是否作为 BBERF。
V-PCRF,还用于在 S2b接口使用的协议类型为 PMIP或 DSMIP时,或 者 ePDG作为 BBERF时,判定需要向 H-PCRF建立 S9会话;还用于在 S2b 接口使用的协议类型为 GTP时, 或者 ePDG不作为 BBERF时, 判定不需 要向 H-PCRF建立 S9会话;
相应的, V-PCRF, 还用于在判定需要向 H-PCRF建立 S9会话时, 向 H-PCRF建立 S9会话。 该系统还包括: 位于固网的 BPCF; 相应的,
V-PCRF, 还用于在和 ePDG建立 Gxb会话之后, 向 BPCF建立 S9*会 话。
上述在漫游场景下建立会话的技术也可以应用到非漫游场景下, 用于 使 PCRF向 ePDG下发 QoS策略, 具体流程如图 10所示, 包括:
步驟 1001 , ePDG向 PCRF建立 Gxb会话, PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者 ePDG是否作为 BBERF;
步驟 1002, PCRF依据 S2b接口使用的协议类型或者 ePDG是否作为 BBERF判断是否向 ePDG下发 QoS策略。
这里,在非漫游场景下, ePDG和 PCRF都是指归属地移动网中的设备。 下面通过具体的实施例来说明该策略下发的方法。
实施例二
本发明在非漫游场景下 PCRF向 ePDG下发 QoS策略的流程如图 11所 示, 包括:
步驟 1101~1102, UE通过固网接入归属地移动网时, 如果固网能感知 到 UE的接入, 则进行归属地移动网的接入认证, 则固网的 BRAS/BNG、 BBF AAA代理(Proxy )和归属地移动网的 3GPP AAA服务器参与该认证 过程, 该认证过程的具体实现为现有技术, 此处不再赘述。 认证完成后, 执行步驟 10022, BRAS/BNG为 UE分配 IP地址, 然后执行步驟 1104。
如果固网无法感知到 UE的接入, 则跳过步驟 1101、 1102, 执行步驟 1003 , 然后执行步驟 1104。
步驟 1103 , UE通过固网接入归属地移动网时, 固网的 RG向 UE分配 IP地址(不需要进行上述的认证过程)。
步驟 1104, UE获得 IP地址后, UE和 ePDG建立 IP安全隧道, 同时, ePDG向归属地移动网的 3GPP AAA服务器请求 UE的认证和授权,在认证 和授权的同时, 3GPP AAA服务器将归属地移动网的 P-GW的 IP地址返回 给 ePDG,如此 ePDG根据该 IP地址和 P-GW建立连接, 就可以确定 ePDG 和 P-GW之间 S2b接口使用的协议类型了、 即可以确定 ePDG是否可以作 为 BBERF0
步驟 1105 , ePDG向 PCRF建立 Gxb会话, 该会话的建立就是为了将 用户接入信息告知 PCRF, 具体的, 将用户接入信息携带在消息中通过 Gxb 接口发送给 PCRF; 同时 , PCRF通过 Gxb接口获取 ePDG和 P-GW之间的 S2b接口使用的协议类型或者 ePDG是否作为 BBERF。
具体实现方式同步驟 905 , 此处不再赘述。
步驟 1106, PCRF判断是否需要向 ePDG下发 QoS策略。
具体的,如果 S2b接口使用的协议类型为 PMIP或 DSMIP,或者 ePDG 作为 BBERF, 则需要向 ePDG下发 QoS策略; 如果 S2b接口使用的协议类 型为 GTP, 或者 ePDG不作为 BBERF, 则不需要向 ePDG下发 QoS策略。
步驟 1107, 判定需要向 ePDG下发 QoS策略时, PCRF向 ePDG返回 的响应中携带 QoS策略; 判定不需要向 ePDG下发 QoS策略时, PCRF向 ePDG返回的响应中不携带 QoS策略。
步驟 1108, 当 QoS策略发生变化时, PCRF通知 ePDG更新策略, 具 体的可以通过 Gxb会话实现。
为了实现上述策略下发的方法, 本发明提供了一种策略下发的系统, 包括: 位于归属地移动网的 ePDG和 PCRF; 其中,
ePDG, 用于向 PCRF建立 Gxb会话;
PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型、 或者 ePDG 是否作为 BBERF; 还用于依据 S2b接口使用的协议类型或者 ePDG是否作 为 BBERF判断是否向 ePDG下发 QoS策略。
ePDG, 还用于 Gxb接口向 PCRF发送消息, 并通过消息携带的标识或 指示,将 S2b接口使用的协议类型或者 ePDG是否作为 BBERF告知 PCRF; 或者,
PCRF, 还用于通过 Gxb接口接收 ePDG发送的消息, 并根据消息携带 的 ePDG的 IP地址和或主机名称和 /或 FQDN信息获取 S2b接口使用的协议 类型或者 ePDG是否作为 BBERF。
PCRF,还用于在 S2b接口使用的协议类型为 PMIP或 DSMIP时,或者 ePDG作为 BBERF时, 判定需要向 ePDG下发 QoS策略; 还用于在 S2b接 口使用的协议类型为 GTP时, 或者 ePDG不作为 BBERF时, 判定不需要 向 ePDG下发 QoS策略;
相应的, PCRF,还用于在判定需要向 ePDG下发 QoS策略时,向 ePDG 下发 PCC策略。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种建立会话的方法, 其特征在于, 该方法包括:
演进的分组数据网关 (ePDG ) 向拜访地策略和计费规则功能实体 ( V-PCRF )建立 Gxb会话;
所述 V-PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG是否作为承载绑定和事件报告功能实体( BBERF );
所述 V-PCRF依据所述 S2b接口使用的协议类型或者所述 ePDG是否 作为 BBERF判断是否需要向归属地策略和计费规则功能实体(H-PCRF ) 建立 S9会话。
2、 根据权利要求 1所述建立会话的方法, 其特征在于, 所述 V-PCRF 通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF, 为:
所述 ePDG通过 Gxb接口向 V-PCRF发送消息, 并通过所述消息携带 的标识或指示,将 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF 告知所述 V-PCRF; 或者,
所述 V-PCRF通过 Gxb接口接收 ePDG发送的消息, 并根据所述消息 携带的所述 ePDG的 IP地址和 /或主机名称和 /或全称域名 ( FQDN )信息获 取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
3、 根据权利要求 1所述建立会话的方法, 其特征在于, 所述 V-PCRF 判断是否需要向 H-PCRF建立 S9会话, 为:
当 S2b接口使用的协议类型为代理移动 IP ( PMIP )或支持双栈的移动 IP ( DSMIP )时, 或者所述 ePDG作为 BBERF时, 判定需要向 H-PCRF建 立 S9会话;
当 S2b接口使用的协议类型为 GPRS隧道协议 ( GTP ) 时, 或者所述 ePDG不作为 BBERF时, 判定不需要向 H-PCRF建立 S9会话。
4、 根据权利要求 3所述建立会话的方法, 其特征在于, 所述判定需要 向 H-PCRF建立 S9会话时,该方法进一步包括:所述 V-PCRF向所述 H-PCRF 建立 S9会话。
5、 根据权利要求 1至 4中任一所述建立会话的方法, 其特征在于, 所 述 ePDG向 V-PCRF建立 Gxb会话之后, 该方法还包括: 所述 V-PCRF向 BPCF发起 S9*会话的建立。
6、 根据权利要求 5所述建立会话的方法, 其特征在于, 所述 ePDG和 V-PCRF位于拜访地移动网; 所述 H-PCRF位于归属地移动网; 所述 BPCF 位于固网。
7、 一种建立会话的系统, 其特征在于, 该系统包括: 位于拜访地移动 网的 ePDG和 V-PCRF、 和位于归属地移动网的 H-PCRF, 其中:
所述 ePDG , 用于向所述 V-PCRF建立 Gxb会话;
所述 V-PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型、 或 者所述 ePDG是否作为 BBERF;还用于依据所述 S2b接口使用的协议类型、 或者所述 ePDG是否作为 BBERF判断是否需要向 H-PCRF建立 S9会话。
8、 根据权利要求 7所述建立会话的系统, 其特征在于,
所述 ePDG,还用于通过 Gxb接口向所述 V-PCRF发送消息, 并通过所 述消息携带的标识或指示, 将 S2b接口使用的协议类型或者所述 ePDG是 否作为 BBERF告知所述 V-PCRF; 或者,
所述 V-PCRF,还用于通过 Gxb接口接收所述 ePDG发送的消息,并根 据所述消息携带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获 取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
9、 根据权利要求 7所述建立会话的系统, 其特征在于,
所述 V-PCRF, 还用于在所述 S2b接口使用的协议类型为 PMIP 或 DSMIP时, 或者所述 ePDG作为 BBERF时, 判定需要向 H-PCRF建立 S9 会话; 还用于在所述 S2b接口使用的协议类型为 GTP时, 或者所述 ePDG 不作为 BBERF时, 判定不需要向 H-PCRF建立 S9会话;
相应的, 所述 V-PCRF, 还用于在判定需要向 H-PCRF建立 S9会话时, 向所述 H-PCRF建立 S9会话。
10、 根据权利要求 7~9 中任一所述建立会话的系统, 其特征在于, 该 系统还包括: 位于固网的宽带策略控制功能实体(BPCF ); 相应的,
所述 V-PCRF,还用于在和所述 ePDG建立 Gxb会话之后,向所述 BPCF 建立 S9*会话。
11、 一种策略下发的方法, 其特征在于, 该方法包括:
ePDG向 PCRF建立 Gxb会话;
所述 PCRF通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG 是否作为 BBERF;
所述 PCRF依据所述 S2b接口使用的协议类型或者所述 ePDG是否作 为 BBERF判断是否向所述 ePDG下发 QoS策略。
12、 根据权利要求 11所述策略下发的方法, 其特征在于, 所述 PCRF 通过 Gxb接口获取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF, 为:
所述 ePDG通过 Gxb接口向 V-PCRF发送消息, 并通过所述消息携带 的标识或指示,将 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF 告知所述 PCRF; 或者,
所述 PCRF通过 Gxb接口接收 ePDG发送的消息, 并根据所述消息携 带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获取 S2b接口使 用的协议类型或者所述 ePDG是否作为 BBERF。
13、 根据权利要求 11所述策略下发的方法, 其特征在于, 所述 PCRF 判断是否向所述 ePDG下发 PCC策略, 为: 当 S2b接口使用的协议类型为 PMIP或 DSMIP时, 或者所述 ePDG作 为 BBERF时, 判定需要向 ePDG下发 PCC策略; 当 S2b接口使用的协议 类型为 GTP时, 或者所述 ePDG不作为 BBERF时, 判定不需要向 ePDG 下发 QoS策略。
14、 根据权利要求 13所述策略下发的方法, 其特征在于, 所述判定需 要向 ePDG下发 PCC策略时, 所述 PCRF向所述 ePDG下发 QoS策略。
15、 根据权利要求 11至 14中任一所述策略下发的方法, 其特征在于, 所述 ePDG和 PCRF位于归属地移动网。
16、 一种策略下发的系统, 其特征在于, 该系统包括: 位于归属地移 动网的 ePDG和 PCRF; 其中 ,
所述 ePDG , 用于向所述 PCRF建立 Gxb会话;
所述 PCRF, 用于通过 Gxb接口获取 S2b接口使用的协议类型或者所 述 ePDG是否作为 BBERF; 还用于依据所述 S2b接口使用的协议类型或者 所述 ePDG是否作为 BBERF判断是否向所述 ePDG下发 QoS策略。
17、 根据权利要求 16所述策略下发的系统, 其特征在于,
所述 ePDG,还用于通过 Gxb接口向所述 PCRF发送消息,并通过所述 消息携带的标识或指示, 将 S2b接口使用的协议类型或者所述 ePDG是否 作为 BBERF告知所述 PCRF; 或者,
所述 PCRF,还用于通过 Gxb接口接收所述 ePDG发送的消息,并根据 所述消息携带的所述 ePDG的 IP地址和 /或主机名称和 /或 FQDN信息获取 S2b接口使用的协议类型或者所述 ePDG是否作为 BBERF。
18、 根据权利要求 16所述策略下发的系统, 其特征在于,
所述 PCRF,还用于在所述 S2b接口使用的协议类型为 PMIP或 DSMIP 时,或者所述 ePDG作为 BBERF时,判定需要向所述 ePDG下发 QoS策略; 还用于在所述 S2b接口使用的协议类型为 GTP时, 或者所述 ePDG不作为 BBERF时, 判定不需要向所述 ePDG下发 QoS策略;
相应的, 所述 PCRF, 还用于在判定需要向所述 ePDG下发 QoS策略 时, 向所述 ePDG下发 QoS策略。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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* Cited by examiner, † Cited by third party
Title
"Study on General Packet Radio Service (GPRS) Tunelling Protocol (GTP) based S2b; Stage 2 (Release 10)", 3GPP TR 23.834 V10.0.0, June 2010 (2010-06-01) *

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