WO2012129992A1 - 被赞助数据连接的处理方法及策略与计费规则功能实体 - Google Patents

被赞助数据连接的处理方法及策略与计费规则功能实体 Download PDF

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Publication number
WO2012129992A1
WO2012129992A1 PCT/CN2012/071218 CN2012071218W WO2012129992A1 WO 2012129992 A1 WO2012129992 A1 WO 2012129992A1 CN 2012071218 W CN2012071218 W CN 2012071218W WO 2012129992 A1 WO2012129992 A1 WO 2012129992A1
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WIPO (PCT)
Prior art keywords
pcrf
roaming
data connection
sponsored data
determines
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PCT/CN2012/071218
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English (en)
French (fr)
Inventor
周晓云
宗在峰
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中兴通讯股份有限公司
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Publication of WO2012129992A1 publication Critical patent/WO2012129992A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for processing a sponsored data connection and a policy and charging rule function entity. Background technique
  • the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project)'s Policy and Charging Control (PCC) architecture is a functional framework that can be applied to multiple access technologies, for example, for general mobility.
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile Communication
  • EDGE GSM Data Enhanced Evolution
  • EPS Evolved Packet System
  • FIG. 1 is a schematic diagram of a non-roaming architecture of a Rd-8 PCC in the prior art.
  • an application function entity AF, Application Function
  • AF Application Function
  • Dynamic policy control When the service plane performs parameter negotiation, the AF transmits the related service information to the Policy and Charging Rules Function (PCRF). If the service information is consistent with the PCRF policy, the PCRF accepts the parameter. Negotiation; otherwise, the PCRF rejects the parameter negotiation and gives the service parameters acceptable to the PCRF in the feedback; then, the AF can return the acceptable service parameters to the user equipment (UE, User Equipment); wherein, between the AF and the PCRF
  • the interface is the Rx interface.
  • PCRF is the core of PCC for policy and billing rules; PCRF provides Network control rules for traffic data flows, including monitoring and gating of traffic data flows
  • the PCRF sends its policy and charging rules to the Policy and Charging Enforcement Function (PCEF), and the PCRF also needs to ensure that these rules are consistent with the user's subscription information.
  • PCEF Policy and Charging Enforcement Function
  • the basis for the policy and accounting rules of the PCRF is as follows: Obtaining service-related information from the AF, obtaining user policy charging control subscription information from the SPR (Spread Profile Repository), and obtaining information about the bearer-related network from the PCEF.
  • the PCEF is used to perform the policy and charging rules defined by the PCRF on the bearer plane.
  • the PCEF monitors the service data flow according to the service data flow filter in the policy and charging rules sent by the PCRF, and then performs PCRF on the service data flow.
  • the policies and billing rules that have been developed.
  • the PCEF performs QoS authorization according to the policy and charging rules sent by the PCRF, and performs gate control according to the execution of the AF.
  • the charging rule sent by the PCRF the PCEF performs the corresponding service data flow charging operation, and the charging is online charging or offline charging; if it is online charging, the PCEF needs to be related to the online charging system (OCS, Online Charging System). Credit management is performed together.
  • OCS Online Charging System
  • PCEF needs to exchange relevant charging information with the offline charging system (OFCS).
  • the interface between the PCEF and the PCRF is a Gx interface
  • the interface with the OCS is a Gy interface
  • the interface between the OFCS and the OFCS is a Gz interface.
  • PCEF usually located network gateway (GW, Gate-Way) within, for example, in GPRS Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node) and the I-WLAN Packet Data Gateway (PDG, Packet Data Gateway) 0
  • the Bearer Binding and Event Reporting Function (BBERF) functions include bearer binding, uplink bearer binding, and event reporting.
  • S-GW, Serving GW serving gateway
  • PDN Packet Data Network gateway
  • P-GW Packet Data Network gateway
  • PON GW Packet Data Network gateway
  • the BBERF is located in the S-GW.
  • the BBERF is located in the trusted non-3GPP access.
  • the gateway when the UE accesses through the untrusted non-3GPP access system, the BBERF is located in the Evolved Packet Data Gateway (ePDG), and the PCEF no longer performs the binding function.
  • ePDG Evolved Packet Data Gateway
  • the SPR is used to store policy control and charging related user policy charging control subscription information.
  • the interface between the SPR and the PCRF is a Sp interface.
  • OCS is used to control and manage user credits in the online charging mode with PCEF.
  • the OFCS is used to complete the charging operation in the offline charging mode with the PCEF.
  • the above-mentioned Rel-8 PCC architecture is implemented by each functional entity, and the policy charging control for the IP-Connected Network (IP-Access, Network Access Access Network) session established by the UE for accessing a PDN.
  • IP-Connected Network IP-Access, Network Access Access Network
  • PCC architecture support is called Sponsored Data Connectivity.
  • the so-called sponsored data connection refers to the consumption consumption generated by the user's accessed service, which is not borne by the user but is borne by the service provider.
  • the AF provides the sponsored data connection information, such as the sponsor identity, and the service service provider (Application Service Provider) when providing the PCRF with the service information of the sponsored data connection.
  • the sponsored data connection document will be saved in the SPR or PCRF, including the sponsor identification and a list of application information for each application service provider.
  • the PCRF will also authorize the sponsored data connection information provided by the AF according to the sponsored data connection document, that is, determine whether the sponsored data connection is allowed.
  • the policy and charging control of the sponsored data connection in the non-roaming scenario and the access to the visited place are considered.
  • the policy and charging control method in the scenario but for the home routing access roaming scenario, no effective solution has been proposed to solve the problem of how to handle the sponsored data connection. Summary of the invention
  • the main purpose of the present invention is to provide a method for processing a sponsored data connection and a policy and charging rule function entity, which realizes the processing of the sponsored data connection in the home routing roaming scenario and the visited access roaming scenario. .
  • the present invention provides a method for processing a sponsored data connection, in which a user equipment (UE) establishes an IP-Connected Access Network (IP-CAN) session and accesses a sponsored data connection;
  • UE user equipment
  • IP-CAN IP-Connected Access Network
  • PCRF Policy and Charging Rules Function Entity
  • the PCRF when the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF:
  • the PCRF determines that the UE roams, and sends indication information of the UE roaming to the AF;
  • the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF.
  • the PCRF when the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF:
  • the PCRF determines that the UE roams, and returns a reject message to the AF;
  • the PCRF determines that the UE roams, the PCRF sends a message requesting termination of the sponsored data connection to the AF.
  • the PCRF determines that the UE roams as: After the UE establishes an IP-CAN session or establishes an IP-CAN session, the Policy and Charging Enforcement Function Entity (PCEF) and/or the Bearer Binding and Event Reporting Function Entity (BBERF) reports the UE roaming to the PCRF.
  • PCEF Policy and Charging Enforcement Function Entity
  • BBERF Bearer Binding and Event Reporting Function Entity
  • the indication information the PCRF determines that the UE roams according to the indication information of the UE roaming.
  • the PCRF when the PCRF determines that the UE is roaming, the PCRF sends the indication information of the roaming of the UE to the AF:
  • the PCEF reports the event of the UE roaming to the PCRF; the PCRF determines that the UE roams according to the event of the UE roaming, and sends the indication information of the UE roaming to the AF.
  • the PCRF when the PCRF determines that the UE is roaming, the PCRF sends the indication information of the roaming of the UE to the AF:
  • the BBERF of the visited network sends a message requesting to establish a gateway control session to the PCRF (V-PCRF) of the visited place;
  • V-PCRF determines that the UE is a roaming user, sends a message requesting to establish an S9 session to the PCRF;
  • the PCRF determines that the UE roams according to the message that the S9 session is established, and sends the indication information of the UE roaming to the AF.
  • the reject message carries a cause value of the UE roaming
  • the message requesting termination of the sponsored data connection carries a reason value of the UE roaming.
  • the method further includes:
  • the PCRF provides the AF with a cumulative amount of the UE.
  • the method further includes:
  • the terminated data connection is terminated. Or update the sponsored data connection.
  • the present invention also provides a policy and charging rule function entity, which is used by the UE to establish an IP-CAN session and access the sponsored data connection, and then determine the roaming indication information of the UE when the UE roams. Send to AF.
  • a policy and charging rule function entity which is used by the UE to establish an IP-CAN session and access the sponsored data connection, and then determine the roaming indication information of the UE when the UE roams. Send to AF.
  • the PCRF when the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF:
  • the AF When the AF initially provides the session information of the sponsored data connection to the PCRF, when the PCRF determines that the UE roams, and returns a reject message to the AF;
  • the PCRF determines that the UE roams
  • the PCRF sends a sponsored request to the AF to terminate the sponsored data connection.
  • the data connection processing method and the policy and charging rule function entity the UE establishes an IP-CAN session and accesses the sponsored data connection; when the PCRF determines that the UE roams, the PCRF sends the UE roaming indication information to the AF
  • the invention can realize the processing of the sponsored data connection in the home routing roaming scenario, and make up for the blank of the processing method of the sponsored data connection service in the no-home routing roaming scenario in the prior art; in addition, the present invention also proposes another visiting place. A method of processing a sponsored data connection service in a roaming scenario.
  • FIG. 1 is a schematic diagram of a Rel-8 PCC non-roaming architecture in the prior art
  • Embodiment 1 is a schematic flow chart of Embodiment 1 of a method for processing a sponsored data connection according to the present invention
  • Embodiment 3 is a schematic flow chart of Embodiment 2 of a method for processing a sponsored data connection according to the present invention
  • FIG. 4 is a schematic flowchart of Embodiment 3 of a method for processing a sponsored data connection according to the present invention
  • 5 is a schematic diagram of a R8 PCC home routing roaming architecture in the prior art
  • FIG. 6 is a schematic flowchart of Embodiment 4 of a method for implementing a sponsored data connection according to the present invention
  • Embodiment 7 is a schematic flow chart of Embodiment 5 of a method for processing a sponsored data connection according to the present invention.
  • Figure 8 is a flow chart showing the sixth embodiment of the processing method for implementing the sponsored data connection of the present invention. detailed description
  • the basic idea of the present invention is: The UE establishes an IP-CAN session and accesses the sponsored data connection.
  • the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF.
  • the present invention provides a method for processing a sponsored data connection, the method comprising:
  • the UE establishes an IP-CAN session and accesses the sponsored data connection.
  • the PCRF determines that the UE is roaming, the PCRF sends the indication information of the UE roaming to the AF.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for processing a sponsored data connection according to the present invention.
  • the AF After the UE establishes an IP-CAN session or establishes an IP-CAN session, the AF initially provides a sponsored data connection to the PCRF.
  • the PCRF determines the UE roaming, and the PCRF sends the indication information of the UE roaming to the AF.
  • the method includes the following steps:
  • Step 201 The UE establishes an IP-CAN session. After establishing an IP-CAN session or establishing an IP-CAN session, the PCEF and/or the BBERF send the UE roaming indication information to the PCRF, where the information carries the UE currently connected. The identity of the incoming network, the PCRF determines the UE roaming based on the information.
  • Step 202 the UE initiates a service request to the ASP through the established IP-CAN session, and the ASP and the sponsoring server send the service information of the sponsored data connection to the AF; Specifically, the UE connects with a third-party application service provider (ASP, Application Service Provider) through the established IP-CAN session, and initiates a service request; when the ASP determines to provide the sponsored data connection for the UE, ASP and sponsorship
  • the sponsor provides the AF with the service information of the dynamic sponsored data connection; wherein the service information of the sponsored data connection includes an IP for identifying the sponsored UE information (eg, an IP address;), the service of the sponsored data connection Stream description information, media type, bandwidth, sponsored data connection information unique to the sponsored data connection; wherein the sponsored data connection information unique to the sponsored data connection includes a sponsor identification, information for identifying the ASP and the application, and
  • the sponsored data connection information unique to the sponsored data connection may also include a usage threshold (UT, Usage Threshold), so that the PCRF can establish
  • Step 203 The AF provides the received service information of the sponsored data connection to the PCRF.
  • the AF provides the service information of the received sponsored data connection to the PCRF through the initially provided session information of the sponsored data connection.
  • the session information of the initially provided sponsored data connection is an AF session establishment message; wherein the service information of the sponsored data connection includes UE information (eg, IP address;) used to identify sponsorship, and service IP of the sponsored data connection Stream description information, media type, bandwidth, sponsored data connection information unique to the sponsored data connection; wherein the sponsored data connection information unique to the sponsored data connection includes a sponsor identification, information for identifying the ASP and the application, and
  • the sponsored data connection information unique to the sponsored data connection may also include a UT; in addition, the AF may also send a request to the PCRF to obtain an indication of UE roaming, so that the PCRF determines that the UE roams, notifying the AF.
  • Step 204 After the PCRF authorizes the received service information of the sponsored data connection, the PCRF returns an acknowledgement message to the AF, where the UE carries the indication information of the roaming of the UE.
  • the PCRF determines, according to the sponsored data connection document, whether to authorize the sponsored data connection service information provided by the AF, that is, determines the sponsor identifier in the sponsored data connection service information provided by the AF, and information used to identify the ASP and the application. Is there a corresponding contract information? If the authorization is successful, the PCRF returns an acknowledgement message to the AF; if not, the authorization fails, and the process ends; wherein the sponsored data connection document is obtained by the PCRF in advance from the SPR, or is configured in advance in the PCRF;
  • the PCRF determines that the UE is roaming, so if the authorization is successful, according to the request of the AF to send the indication of the UE roaming sent by the AF to the PCRF in step 203, the PCRF returns a confirmation message.
  • the UE carries the indication information of the UE roaming, or when the PCRF determines that the UE is roaming, the indication information of the UE roaming is always carried in the acknowledgement message; in addition, the PCRF may further provide the AF identifier of the network that the UE currently roams to;
  • the indication information can be implemented as follows: Special Action Public Land Mobile Network (PLMN_CHANGE, Public Land Mobile Network_CHANGE), or roaming change event, or carrying a parameter for identifying UE roaming in the message.
  • Step 205 The AF determines whether to continue to provide the sponsored data connection.
  • the AF determines whether to continue to provide the sponsored data connection or terminate the sponsored data connection according to the local policy; if the AF decides to terminate the sponsored data connection, the AF will initiate the AF to the PCRF. The process of session termination; if AF continues to provide sponsored data connections, the AF provides the PCRF with new business information for the sponsored data connection.
  • the method also includes:
  • Step 206 the PCRF formulates a PCC policy, or formulates a PCC policy and a usage monitoring policy, and sends the formulated policy to the PCEF;
  • the PCRF formulates a PCC policy according to the pre-configured network policy and the service information of the sponsored data connection. If the AF provides the UT to the PCRF in advance, the PCRF also needs to establish a usage monitoring policy, and sends the established usage monitoring policy to the PCRF.
  • PCEF PCell
  • the method for formulating the usage monitoring strategy is: the PCRF constructs a monitoring key according to the sponsor identification, and includes the monitoring key in the formulated PCC policy.
  • the usage threshold is set for the Monitoring Key according to the UT provided by the AF; in addition, the PCRF sends a request for the UE to learn the event of the UE roaming (the request can be implemented by subscribing to the PCEF by the PLMN_CHANGE or the roaming change event), so that the PCEF determines that the UE roams, Notify PCRF 0
  • Step 207 The PCEF executes the received policy, and returns an acknowledgement message to the PCRF, where the UE can access the sponsored data connection service.
  • Embodiment 3 is a schematic flowchart of Embodiment 2 of a method for processing a sponsored data connection according to the present invention, when the AF initially provides the session information of the sponsored data connection to the PCRF after the UE is established or after the IP-CAN session is established ( That is, when the AF session is established, the PCRF determines the UE roaming, and the PCRF sends the indication information of the UE roaming to the AF.
  • the method includes the following steps:
  • Step 301 to step 303 are the same as steps 201 to 203.
  • Step 304 The PCRF determines that the UE roams, and the PCRF returns a reject message to the AF, where the indication information of the UE roaming is carried;
  • the PCRF determines that the UE is roaming, and therefore the PCRF returns a reject message to the AF, where the indication information of the UE roaming is carried, indicating that the UE is roaming;
  • the indication information of the UE roaming carried in the reject message is a cause value of the roaming of the UE.
  • Step 305 After receiving the reject message sent by the PCRF, the AF notifies the ASP to stop providing the sponsored data connection to the UE.
  • the first embodiment and the second embodiment are applicable to the two types of roaming scenarios: the home routing and the visited access.
  • the PCEF in the first embodiment and the second embodiment is located in the home network, and the accessing roaming scenario is implemented in the visited place.
  • the PCEFs in Example 1 and Example 2 are located at the visited place.
  • Embodiment 3 When the AF initially provides the session information of the sponsored data connection to the PCRF, there is also a UE in the non-roaming state in the actual application. Therefore, when the PCRF determines that the UE is in the non-roaming state, the PCRF still needs to feed back to the AF that the UE is not roaming.
  • the indication information may be implemented by carrying the explicit non-roaming indication information or the indication information indicating that the roaming is not carried in the confirmation message, that is, the indication information that does not carry the roaming indicates that the UE is in non-roaming.
  • the UE may access the sponsored data connection service. In the process of the UE accessing the sponsored data connection service, if the UE moves and roams, the PCRF still needs to send the indication information of the UE roaming to the AF when the PCRF determines that the UE is roaming.
  • FIG. 4 is a schematic flowchart of Embodiment 3 of a method for implementing a sponsored data connection according to the present invention.
  • a UE moves to cause a UE to roam.
  • the PCRF determines that the UE roams, the PCRF will UE.
  • the specific implementation manner 1 of the roaming indication information is sent to the AF.
  • the method includes the following steps:
  • Step 401 The UE establishes an IP-CAN session. After establishing an IP-CAN session or establishing an IP-CAN session, the PCEF and/or the BBERF notify the PCRF of the information that the UE accesses the network, where the information carries the current access of the UE.
  • the identifier of the network the PCRF may determine whether the UE is non-roaming according to the identifier of the network currently accessed by the UE carried in the information.
  • Step 402 The UE initiates a service request to the ASP through the established IP-CAN session, and the ASP and the sponsoring server send the service information of the sponsored data connection to the AF.
  • Step 403 The AF provides the received service information of the sponsored data connection to the PCRF.
  • the PCRF determines that the UE is not roaming according to the identifier of the network currently accessed by the UE, the PCRF carries the returned confirmation information.
  • the UE is in the non-roaming indication information, where the indication information may be implemented by carrying the explicit non-roaming indication information or the indication information indicating that the roaming is not carried in the acknowledgment message, that is, the indication information that does not carry the roaming indicates that the UE is in a non-difficult manner.
  • Swim the indication information may be implemented by carrying the explicit non-roaming indication information or the indication information indicating that the roaming is not carried in the acknowledgment message, that is, the indication information that does not carry the roaming indicates that the UE is in a non-difficult manner.
  • Step 405 After receiving the confirmation information, the AF notifies the ASP to provide the sponsored data connection to the UE.
  • Step 406 When the UE roams, the PCEF reports the event of the UE roaming to the PCRF. Specifically, when the UE moves, the roaming occurs, and the PCEF is located. The network element device can learn that the UE is roaming, and then report the information of the UE roaming to the PCEF. The PCEF determines that the new PCC policy needs to be requested from the PCRF according to the request sent by the PCRF to the UE to learn the event of the UE roaming, so the PCEF sends the PCRF to the PCRF. The event of the UE roaming is reported. In addition, the PCEF may also send the identifier of the network that the UE is currently roaming to the PCRF.
  • Step 407 When the PCRF receives the event of the UE roaming reported by the PCEF, it determines that the UE roams and returns an acknowledgement message to the PCEF.
  • Step 408 the PCEF sends the amount to the PCRF according to the request of the PCRF;
  • the step is an optional step, that is, if the PCRF sends the established usage monitoring policy to the PCEF in advance, the PCRF requests the PCEF to report the usage, and after receiving the PCRF request, the PCEF reports the accumulated usage to the PCRF.
  • Step 409 the PCRF sends the indication information of the UE roaming to the AF;
  • the PCRF sends the indication information of the UE roaming to the AF, and is used to notify the AF that the UE is roaming.
  • the indication information of the roaming of the UE can be implemented as follows: Special Action (Public Action) (PLMN_CHANGE, Public Land Mobile Network_CHANGE), or a roaming change event, or a message carrying a parameter for identifying the UE roaming; if the AF provides the UT to the PCRF in advance, the PCRF also needs to report the accumulated usage amount to the AF;
  • the AF may be provided with an identification of the network that the UE is currently roaming.
  • the PCRF needs to notify the AF of the event of the UE roaming when determining that the UE is roaming.
  • Step 410 After receiving the indication information that the UE roams, the AF returns an acknowledgement to the PCRF. Interest, and can determine whether to continue to provide sponsored data connections or terminate sponsored data connections based on local policies;
  • the AF will initiate the AF session termination process to the PCRF; if the AF continues to provide the sponsored data connection, the AF can provide the PCRF with the new sponsored data connection service information.
  • Step 411 The PCRF updates the previously established PCC policy, or the PCC policy and the usage monitoring policy, and sends the updated policy to the PCEF.
  • Step 412 The PCEF executes the received policy and returns an acknowledgement message to the PCRF, at which time the UE can continue to access the sponsored data connection.
  • FIG. 6 is a schematic flowchart of Embodiment 4 of a method for implementing a sponsored data connection according to the present invention.
  • a UE moves to cause a UE to roam.
  • the PCRF determines that the UE roams, the PCRF will UE.
  • the specific implementation manner 2 of the roaming indication information is sent to the AF.
  • the method includes the following steps:
  • Step 601 to step 606 are the same as steps 401 to 406.
  • Step 607 The PCRF sends a message requesting termination of the sponsored data connection to the AF, where the carrying UE is in the roaming cause value;
  • the PCRF sends a request to the AF to terminate the sponsored data connection, that is, the request is terminated.
  • the message of the AF session which carries the cause value of the request termination.
  • the cause value is the cause value of the roaming of the UE, and is used to indicate that the UE is roaming. If the AF provides the usage threshold in advance, the PCRF needs to provide the AF with the user having consumed. The cumulative amount used.
  • Step 608 After receiving the message sent by the PCRF to terminate the sponsored data connection, the AF initiates a process of terminating the established AF session. In addition, the AF interacts with the ASP to notify the ASP. Stop providing the sponsored data connection to the UE.
  • FIG. 7 is a schematic flowchart of Embodiment 5 of a method for implementing a sponsored data connection according to the present invention.
  • a UE moves to cause a UE to roam.
  • the PCRF determines that the UE roams, the PCRF will UE.
  • the specific implementation manner of the roaming indication information is sent to the AF. As shown in FIG. 7, based on the home route roaming architecture shown in FIG. 5, the method includes the following steps:
  • Step 701 is the same as step 401;
  • Step 702 The UE accesses the sponsored data link.
  • step 702 refer to step 402 to step 405.
  • Step 703 When the UE roams, the BBERF sends a message requesting to establish a gateway control session to the V-PCRF.
  • the UE switches from the source network to the target network.
  • the source network is called a home network
  • the target network is called a visited network.
  • the UE requests the UE.
  • the service gateway or access gateway accessing the visited network after receiving the request from the BBERF in the serving gateway or access gateway in the UE roaming network (ie, the visited network), will send the PCRF to the visited place (V-PCRF, Visit- The PCRF sends a message requesting to establish a gateway control session, where the user identifier and the PDN identifier are carried.
  • Step 704 When the V-PCRF determines that the UE is a roaming user according to the message that the gateway control session is established, the V-PCRF sends a message requesting to establish an S9 session to the PCRF, where the identifier of the UE roaming network is carried;
  • the V-PCRF receives the message requesting to establish a gateway control session, and knows the home network information of the UE according to the user identifier carried therein, and further determines that the UE generates roaming, which is a roaming user, when the V-PCRF determines that the UE is a roaming user.
  • the V-PCRF sends a message requesting to establish an S9 session to the PCRF, where the user identifier and the PDN identifier are carried.
  • Step 705 The PCRF receives a message sent by the V-PCRF requesting to establish an S9 session, and determines that the UE roams.
  • Step 706 The PCRF associates the S9 session with the established Gx session according to the user identifier and the PDN identifier in the message for establishing the S9 session according to the received request, and is used to control the same IP-CAN; the PCRF is formulated according to the established PCC policy. a QoS policy, and sent to the V-PCRF; wherein the Gx session is a session between the PCEF and the PCRF established during the establishment of the IP-CAN session.
  • Step 707 The V-PCRF sends the received QoS policy to the BBERF.
  • Step 708 The serving gateway or the access gateway sends a proxy binding update message to the packet data network gateway, where the message carries the user identifier and the PDN identifier.
  • Step 709 The PCEF located at the packet data network gateway sends a modification indication of the IP-CAN session to the PCRF.
  • Step 710 If the PCC policy is updated, the PCRF returns an acknowledgement message to the PCEF, and the acknowledgement message carries the updated PCC policy.
  • Step 711 The packet data network gateway returns a proxy binding acknowledgement message to the serving gateway or the access gateway, where the assigned IP address is carried; the serving gateway or the access gateway returns a response request to establish a gateway control session message, where the IP address is carried.
  • Step 712 the PCEF reports the amount to the PCRF according to the request of the PCRF
  • the step is an optional step. If the PCRF sends a usage monitoring policy to the PCEF and requests the PCEF to perform the usage monitoring, in this embodiment, the PCEF needs to report the accumulated usage according to the request of the PCRF.
  • Step 713 the PCRF sends the indication information of the UE roaming to the AF;
  • the PCRF determines that the UE is roaming
  • the PCRF reports an event of the UE roaming to the AF
  • the event of the UE roaming may be specifically implemented by: a specific action (Public Action), a public land mobile network change (PLMN_CHANGE, Public Land Mobile) Network_CHANGE) or roaming change event; or directly carrying the parameter identifying the UE roaming in the message;
  • the PCRF also needs to provide the accumulated amount to the AF; in addition, the PCRF can also provide the UE with the roaming network of the UE.
  • the PCRF needs to notify the AF of the event of the UE roaming when determining that the UE is roaming.
  • Step 714 After the AF receives the indication information of the UE roaming, the AF returns an acknowledgement message to the PCRF, and may determine, according to the local policy, whether to continue providing the sponsored data connection or terminate the sponsored data connection;
  • the B&A will initiate the AF session termination process to the PCRF; if the AF continues to provide the sponsored data connection, the AF can provide the PCRF with the new sponsored data connection service information.
  • Step 715 The PCRF will update the previously established PCC policy, or the PCC policy and the usage monitoring policy, and send the updated policy to the PCEF.
  • Step 716 the PCEF executes the received policy, and returns an acknowledgement message to the PCRF, at which time the UE can continue to access the sponsored data connection.
  • FIG. 8 is a schematic flowchart of Embodiment 6 of a method for implementing a sponsored data connection according to the present invention.
  • a UE moves to cause a UE to roam.
  • the PCRF determines that the UE roams, the PCRF will UE.
  • the specific implementation manner of the roaming indication information is sent to the AF.
  • the method includes the following steps:
  • Steps 801 to 812 are the same as steps 701 to 712.
  • Step 813 The PCRF sends a message requesting termination of the sponsored data connection to the AF, where the reason value of the roaming of the UE is carried; Specifically, the PCRF sends a message requesting the termination of the sponsored data connection to the AF, that is, the message requesting the termination of the AF session, where the message carrying the request termination is carried, and the cause value is the cause value of the roaming of the UE, and is used to indicate that the UE is roaming. If the AF provides a usage threshold in advance, the PCRF also needs to provide the AF with the cumulative amount that the user has consumed.
  • Step 814 After receiving the message sent by the PCRF to terminate the sponsored data connection, the AF initiates a process of terminating the established AF session. In addition, the AF interacts with the ASP, and the ASP stops providing the sponsored data connection to the UE.
  • the PCRF according to the present invention is a home PCRF (H-PCRF, Home- PCRF) 0
  • the present invention further provides a policy and charging rule function entity, the policy and charging rule function entity, used for the policy and charging rule function entity, for establishing an IP-CAN session and accessing the UE by the UE
  • the data connection is sponsored, and when it is determined that the UE is roaming, the indication information of the UE roaming is sent to the AF.
  • the PCRF When the PCRF determines that the UE is roaming, the PCRF sends the indication information of the roaming of the UE to the AF: when the AF initially provides the session information of the sponsored data connection to the PCRF, the PCRF determines The UE roams, and sends the indication information of the UE roaming to the AF; or, when the UE accesses the sponsored data connection process, when the PCRF determines that the UE roams, the PCRF will The indication information of the UE roaming is sent to the AF.
  • the PCRF determines that the UE is roaming
  • the PCRF sends the indication information of the roaming of the UE to the AF: when the AF initially provides the session information of the sponsored data connection to the PCRF, the PCRF determines The UE roams and returns a reject message to the AF; or, in the process of the UE accessing the sponsored data connection, when the PCRF determines that the UE roams, the PCRF sends a request termination to the AF A message about a sponsored data connection.
  • the PCRF determines that the UE roams as: After the UE establishes an IP-CAN session or after establishing an IP-CAN session, a Policy and Charging Enforcement Function Entity (PCEF) and/or a Bearer Binding and Event Reporting Function Entity (BBERF) And reporting, by the PCRF, indication information of the UE roaming, where the PCRF determines that the UE roams according to the indication information of the UE roaming.
  • PCEF Policy and Charging Enforcement Function Entity
  • BBERF Bearer Binding and Event Reporting Function Entity
  • the PCRF determines that the UE is roaming
  • the PCRF sends the indication information of the roaming of the UE to the AF: when the UE roams, the PCEF reports an event of the UE roaming to the PCRF; The event that the UE roams, determines that the UE roams, and sends indication information of the UE roaming to the AF.
  • the PCRF When the PCRF determines that the UE is roaming, the PCRF sends the indication information of the roaming of the UE to the AF: when the UE roams, the BBERF of the visited network sends a request to the PCRF (V-PCRF) of the visited place. Establishing a message of the gateway control session; the V-PCRF determines that the UE is a roaming user, and sends a message requesting to establish an S9 session to the PCRF; the PCRF determines, according to the request, the message that the S9 session is established, the UE roams. And transmitting, to the AF, indication information that the UE roams.
  • V-PCRF PCRF
  • the reject message carries the cause value of the UE roaming; the message requesting termination of the sponsored data connection carries the cause value of the UE roaming.

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Description

被赞助数据连接的处理方法及策略与计费规则功能实体 技术领域
本发明涉及通信技术领域， 尤其涉及一种被赞助数据连接的处理方法 及策略与计费规则功能实体。 背景技术
第三代合作伙伴计划 （3GPP, 3rd Generation Partnership Project ) 的策 略和计费控制 （PCC, Policy and Charging Control ) 架构是一个能够应用于 多种接入技术的功能框架， 例如， 可以应用于通用移动通信系统（UMTS , Universal Mobile Telecommunications System )的陆上无线接入网（UTRAN, UMTS Terrestrial Radio Access Network ),全球移动通信系统（ GSM , Global system for Mobile Communication ) /GSM数据增强演进（EDGE, Enhanced Data rates for Global Evolution )无线接入网、 互通无线局域网 （I-WLAN, Abbreviation for Interworking - Wireless Local Area Network )以及演进的分组 系统（EPS , Evolved Packet System )等。
图 1是现有技术中 Rd-8 PCC非漫游架构的示意图，如图 1所示，应用 功能实体（ AF, Application Function )提供业务应用的接入点， 这些业务应 用所使用的网络资源需要进行动态的策略控制； 业务面进行参数协商时， AF将相关业务信息传递给策略与计费规则功能实体（PCRF, Policy and Charging Rules Function ),如果这些业务信息与 PCRF的策略一致，则 PCRF 接受参数协商； 否则， PCRF拒绝参数协商， 并在反馈中给出 PCRF可接受 的业务参数； 而后， AF可将可接受的业务参数返回给用户设备（UE, User Equipment ); 其中， AF和 PCRF之间的接口是 Rx接口。
PCRF是 PCC的核心， 用于策略和计费规则的制定； PCRF提供了基于 业务数据流的网络控制规则， 这些网络控制包括业务数据流的监测、 门控
( Gating Control )、 服务质量（ QoS, Quality of Service )控制以及基于数据 流的计费规则等。 PCRF将其制定的策略和计费规则发送给策略与计费执行 功能实体 ( PCEF, Policy and Charging Enforcement Function )执行, 同时 PCRF还需要保证这些规则和用户的签约信息一致。 PCRF制定策略和计费 规则的依据包括： 从 AF获取业务相关信息， 从用户签约数据库（SPR, Subscription Profile Repository )获取用户策略计费控制签约信息， 从 PCEF 获取与承载相关网络的信息。
PCEF用于在承载面执行 PCRF所制定的策略和计费规则， PCEF根据 PCRF发送的策略和计费规则中的业务数据流过滤器，对业务数据流进行监 测， 进而对这些业务数据流执行 PCRF所制定的策略和计费规则。 在承载 建立时， PCEF按照 PCRF发送的策略和计费规则进行 QoS授权， 并根据 AF的执行进行门控控制。 根据 PCRF发送的计费规则， PCEF执行相应的 业务数据流计费操作，计费是在线计费或离线计费；如果是在线计费， PCEF 需要与在线计费系统（OCS, Online Charging System )一起进行信用管理， 如果是离线计费， PCEF 需要与离线计费系统 （OFCS , Offline Charging System )之间交换相关计费信息。 PCEF与 PCRF之间的接口是 Gx接口， 与 OCS之间的接口是 Gy接口， 与 OFCS之间的接口是 Gz接口。 PCEF通 常位于网络的网关（ GW, Gate-Way ) 内， 例如 GPRS中的 GPRS网关支持 节点（ GGSN, Gateway GPRS Support Node )以及 I-WLAN中的分组数据网 关（PDG, Packet Data Gateway )0
承载绑定和事件报告功能实体 ( BBERF, Bearer Binding and Event Reporting Function ), 其功能包括承载绑定、 上行承载绑定的验以及事件报 告。 当 UE通过 E-UTRAN接入， 并且服务网关（S-GW, Serving GW )与 分组数据网络（ PDN, Packet Data Network ) 网关（ P-GW, PON GW )之 间采用代理移动互联网协议版本 6 ( ΡΜΙΡνό , Proxy Mobile Internet Protocol Version 6 )协议时， BBERF就位于 S-GW, 当 UE通过可信任非 3GPP接入 系统接入时， BBERF位于可信任非 3GPP接入网关， 当 UE通过不可信任 非 3GPP接入系统接入时， BBERF位于演进的分组数据网关（ ePDG, Evolved Packet Data Gateway ), 此时 PCEF不再执行 载绑定功能。
SPR 用于存储策略控制与计费相关的用户策略计费控制签约信息， 其 中， SPR和 PCRF之间的接口是 Sp接口。 OCS用于与 PCEF—起进行在线 计费方式下用户信用的控制和管理。 OFCS用于与 PCEF—起完成离线计费 方式下的计费操作。
上述 Rel-8 PCC架构通过各功能实体实现了， 对 UE为访问一个 PDN 所建立的 IP连接接入网 （IP-CAN, IP Connectivity Access Network )会话 的策略计费控制。
目前， PCC架构支持称为被赞助数据连接（ Sponsored data connectivity ), 所谓被赞助数据连接是指用户所访问业务产生的用量消耗， 并不是由用户 自己承担， 而是由业务提供方承担， 此时， 当用户发起该类业务访问时， AF在向 PCRF提供被赞助数据连接的业务信息时， 还提供被赞助数据连接 信息， 例如赞助商标识 ( Sponsor Identity ), 标识业务提供商 （Application Service Provider )和应用信息， 以及可能向 PCRF提供的业务提供方赞助访 问该类业务的用量阈值， 即用户可以免费访问该类业务的用量。
为了实现对被赞助数据连接的策略和计费控制， 在 SPR或 PCRF中将 会保存被赞助数据连接文档， 其中包括赞助商标识和每个应用业务提供商 的应用信息列表。 对于被赞助数据连接， PCRF除对业务信息进行 QoS授 权外，还将根据被赞助数据连接文档，对 AF提供的被赞助数据连接信息进 行授权， 即确定是否允许进行被赞助数据连接。 但是， 现有技术中仅考虑 了非漫游场景下被赞助数据连接的策略和计费控制， 以及在拜访地接入漫 游场景下的策略和计费控制的方法， 而对于在家乡路由接入漫游场景下， 还没提出有效的方案解决如何处理被赞助数据连接。 发明内容
有鉴于此， 本发明的主要目的在于提供一种被赞助数据连接的处理方 法及策略与计费规则功能实体， 实现了家乡路由漫游场景下和拜访地接入 漫游场景下被赞助数据连接的处理。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供一种被赞助数据连接的处理方法， 用户设备 ( UE )建立 IP 连接接入网 （IP-CAN )会话并访问被赞助数据连接； 包括：
当策略与计费规则功能实体（ PCRF )确定所述 UE漫游时， 所述 PCRF 将所述 UE漫游的指示信息发送给应用功能实体（ AF )。
上述方法中， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时， 所述 PCRF确定所述 UE漫游， 并将 UE漫游的指示信息发送给所述 AF;
或， 所述 UE访问被赞助数据连接过程中， 当所述 PCRF确定所述 UE 漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给所述 AF。
上述方法中， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时， 所述 PCRF确定所述 UE漫游， 并向所述 AF返回拒绝消息；
或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF确定 UE 漫游时， 所述 PCRF向所述 AF发送请求终结所述被赞助数据连接的消息。
上述方法中，所述 AF向所述 PCRF初始所述提供被赞助数据连接的会 话信息时， 所述 PCRF确定所述 UE漫游为： 在所述 UE建立 IP-CAN会话过程中或建立 IP-CAN会话后， 策略和计 费执行功能实体（PCEF )和 /或承载绑定和事件报告功能实体（BBERF )向 所述 PCRF上报 UE漫游的指示信息， 所述 PCRF根据所述 UE漫游的指示 信息确定所述 UE漫游。
上述方法中， 所述当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所 述 UE漫游的指示信息发送给 AF为：
当所述 UE漫游时， PCEF向所述 PCRF上报 UE漫游的事件；所述 PCRF 根据所述 UE漫游的事件， 确定所述 UE漫游， 并将所述 UE漫游的指示信 息发送给所述 AF。
上述方法中， 所述当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所 述 UE漫游的指示信息发送给 AF为：
当所述 UE漫游时 , 拜访网络的 BBERF向拜访地的 PCRF ( V-PCRF ) 发送请求建立网关控制会话的消息；
所述 V-PCRF确定所述 UE是漫游用户时，向所述 PCRF发送请求建立 S9会话的消息；
所述 PCRF根据所述请求建立 S9会话的消息确定所述 UE漫游， 将所 述 UE漫游的指示信息发送给所述 AF。
上述方法中，
所述拒绝消息中携带所述 UE漫游的原因值；
所述请求终结所述被赞助数据连接的消息中携带所述 UE 漫游的原因 值。
上述方法中， 该方法还包括：
所述 PCRF向所述 AF提供所述 UE的累计用量。
上述方法中， 该方法还包括：
所述 AF接收到所述 UE漫游的指示信息后，终止所述被赞助数据连接 或更新所述被赞助数据连接。
本发明还提供一种策略与计费规则功能实体， 该策略与计费规则功能 实体， 用于 UE建立 IP-CAN会话并访问被赞助数据连接后， 确定 UE漫游 时， 将 UE漫游的指示信息发送给 AF。
上述策略与计费规则功能实体中， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时，当 PCRF 确定所述 UE漫游， 并向所述 AF返回拒绝消息；
或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF确定所述 UE漫游时， 所述 PCRF向所述 AF发送请求终结所述被赞助数据连接的消 本发明提供的被赞助数据连接的处理方法及策略与计费规则功能实 体， UE建立 IP-CAN会话并访问被赞助数据连接； 当 PCRF确定所述 UE 漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF, 能够实现家乡 路由漫游场景下被赞助数据连接的处理， 弥补了现有技术中没有家乡路由 漫游场景下被赞助数据连接业务的处理方法的空白； 此外， 本发明还提出 了另外一种拜访地接入漫游场景下的被赞助数据连接业务的处理方法。 附图说明
图 1是现有技术中 Rel-8 PCC非漫游架构的示意图；
图 2是本发明实现被赞助数据连接的处理方法的实施例一的流程示意 图；
图 3是本发明实现被赞助数据连接的处理方法的实施例二的流程示意 图；
图 4是本发明实现被赞助数据连接的处理方法的实施例三的流程示意 图； 图 5是现有技术中 Rd-8 PCC家乡路由漫游架构的示意图； 图 6是本发明实现被赞助数据连接的处理方法的实施例四的流程示意 图；
图 7是本发明实现被赞助数据连接的处理方法的实施例五的流程示意 图；
图 8是本发明实现被赞助数据连接的处理方法的实施例六的流程示意 图。 具体实施方式
本发明的基本思想是： UE建立 IP-CAN会话并访问被赞助数据连接， 当 PCRF确定 UE漫游时， PCRF将 UE漫游的指示信息发送给 AF。
下面通过附图及具体实施例对本发明再做进一步的详细说明。
本发明提供一种被赞助数据连接的处理方法， 该方法包括：
UE建立 IP-CAN会话并访问被赞助数据连接， 当 PCRF确定 UE漫游 时， PCRF将 UE漫游的指示信息发送给 AF。
实施例一
图 2是本发明实现被赞助数据连接的处理方法的实施例一的流程示意 图，是在 UE建立 IP-CAN会话过程中或建立 IP-CAN会话后，在 AF向 PCRF 初始提供被赞助数据连接的会话信息时（即 AF会话建立时）， PCRF确定 UE漫游， PCRF将 UE漫游的指示信息发送给 AF的具体实现方式一，如图 2所示， 该方法包括以下步驟：
步驟 201 , UE建立 IP-CAN会话， 在建立 IP-CAN会话过程中或建立 IP-CAN会话后， PCEF和 /或 BBERF将 UE漫游的指示信息上 4艮给 PCRF, 该信息中携带 UE当前接入的网络的标识， PCRF根据该信息确定 UE漫游。
步驟 202, UE通过建立的 IP-CAN会话向 ASP发起业务请求， ASP和 赞助服务器将被赞助数据连接的业务信息发送给 AF; 具体的， UE通过建立的 IP-CAN会话与第三方的应用业务提供者（ ASP, Application Service Provider )进行连接， 并发起业务请求； 当 ASP确定为 该 UE提供被赞助数据连接时， ASP和赞助 （ Sponsor )服务器向 AF提供 动态的被赞助数据连接的业务信息； 其中， 被赞助数据连接的业务信息包 括用于标识被赞助的 UE信息（例如 IP地址；)、被赞助数据连接的业务的 IP 流描述信息、 媒体类型、 带宽、 被赞助数据连接特有的被赞助数据连接信 息； 其中， 被赞助数据连接特有的被赞助数据连接信息包括赞助商标识、 用于标识 ASP和应用的信息， 此外， 被赞助数据连接特有的被赞助数据连 接信息还可能包括用量阈值（UT, Usage Threshold ), 以便 PCRF根据 UT 制定用量监测策略， PCEF可以执行用量监测。
步驟 203， AF将收到的被赞助数据连接的业务信息提供给 PCRF; 具体的， AF通过初始提供的被赞助数据连接的会话信息将收到的被赞 助数据连接的业务信息提供给 PCRF,所述初始提供的被赞助数据连接的会 话信息为 AF会话建立消息； 其中，被赞助数据连接的业务信息包括被用于 标识赞助的 UE信息 （例如 IP地址；)、 被赞助数据连接的业务的 IP流描述 信息、 媒体类型、 带宽、 被赞助数据连接特有的被赞助数据连接信息； 其 中， 被赞助数据连接特有的被赞助数据连接信息包括赞助商标识、 用于标 识 ASP和应用的信息， 此外， 被赞助数据连接特有的被赞助数据连接信息 还可能包括 UT;此外 AF还可以向 PCRF发送获得 UE漫游的指示的请求， 以便 PCRF确定 UE漫游时， 通知 AF。
步驟 204, PCRF对收到的被赞助数据连接的业务信息进行授权后， 向 AF返回确认消息， 其中携带 UE漫游的指示信息；
具体的， PCRF根据被赞助数据连接文档判断是否对 AF提供的被赞助 数据连接业务信息进行授权，即判断 AF提供的被赞助数据连接业务信息中 的赞助商标识、 用于标识 ASP和应用的信息是否有对应的签约信息， 若存 在， 则授权成功， PCRF向 AF返回确认消息； 若不存在， 则授权失败， 结 束流程； 其中， 所述被赞助数据连接文档是 PCRF预先从 SPR中获取的， 或是预先在 PCRF配置的；
当 AF向 PCRF初始提供被赞助数据连接的会话信息时， PCRF则确定 UE处于漫游， 因此如果授权成功， 根据步驟 203中 AF向 PCRF发送的获 得 UE漫游的指示的请求， PCRF在返回的确认消息中携带 UE漫游的指示 信息， 或当 PCRF确定 UE漫游时， 总是在确认消息中携带 UE漫游的指示 信息； 此外， PCRF还可以向 AF提供 UE当前漫游的网络的网络标识； 所述 UE漫游的指示信息可以通过如下方式实现： 特别动作 （Specific Action )公共陆地移动网络变 4匕 （ PLMN_CHANGE, Public Land Mobile Network_CHANGE ), 或漫游改变事件， 或在消息中携带用于标识 UE漫游 的参数。
步驟 205, AF判断是否继续提供被赞助数据连接；
具体的， AF收到 UE漫游的指示信息的通知后， 根据本地策略确定是 继续提供被赞助数据连接，还是终止被赞助数据连接； 如果 AF决定终止被 赞助数据连接， 则 AF将向 PCRF发起 AF会话终结的流程； 如果 AF继续 提供被赞助数据连接，则 AF向 PCRF提供新的被赞助数据连接的业务信息。
当 AF继续提供被赞助数据连接时， 该方法还包括：
步驟 206, PCRF制定 PCC策略， 或制定 PCC策略和用量监测策略， 并将制定的策略发送给 PCEF;
具体的， PCRF根据预先配置的网络策略以及被赞助数据连接的业务信 息制定 PCC策略， 如果 AF预先将 UT提供给了 PCRF, 这里 PCRF还需要 制定用量监测策略， 并将制定的用量监测策略发送给 PCEF;
其中， 制定用量监测策略的方法是： PCRF根据赞助商标识构造监测键 ( Monitoring Key ), 并将该 Monitoring Key包含在制定的 PCC策略中， 同 时根据 AF提供的 UT为该 Monitoring Key设置用量门限； 此外， PCRF向 PCEF 发送获知 UE 漫游的事件的请求 （该请求可通过向 PCEF 订阅 PLMN_CHANGE或漫游改变事件实现 ), 以便 PCEF确定 UE漫游时， 通 知 PCRF0
步驟 207, PCEF执行收到的策略， 并向 PCRF返回确认消息， 此时 UE 可以访问被赞助数据连接业务。
实施例二
图 3是本发明实现被赞助数据连接的处理方法的实施例二的流程示意 图， 是在 UE建立过程中或建立 IP-CAN会话后， 在 AF向 PCRF初始提供 被赞助数据连接的会话信息时 （即 AF会话建立时）， PCRF确定 UE漫游， PCRF将 UE漫游的指示信息发送给 AF的具体实现方式二， 如图 3所示， 该方法包括以下步驟：
步驟 301~步驟 303同步驟 201~步驟 203。
步驟 304, PCRF确定 UE漫游， PCRF向 AF返回拒绝消息， 其中携带 UE漫游的指示信息；
具体的，当 AF向 PCRF初始提供被赞助数据连接的会话信息时， PCRF 则确定 UE处于漫游， 因此 PCRF向 AF返回拒绝消息， 其中携带 UE漫游 的指示信息， 指示 AF所述 UE处于漫游； 其中， 拒绝消息中携带的 UE漫 游的指示信息为 UE处于漫游的原因值。
步驟 305 , AF收到 PCRF发送的拒绝消息后， 通知 ASP停止向 UE提 供被赞助数据连接。
实施例一和实施例二适用于家乡路由和拜访地接入两种漫游场景， 对 于家乡路由漫游场景， 实施例一和实施例二中的 PCEF位于家乡网络，对于 拜访地接入漫游场景， 实施例一和实施例二中的 PCEF位于拜访地。
实施例三 在 AF向 PCRF初始提供被赞助数据连接的会话信息时，在实际应用中 也存在处于非漫游状态的 UE, 因此， 当 PCRF确定 UE处于非漫游状态时， PCRF仍需要向 AF反馈 UE处于非漫游的指示信息， 其中该指示信息可以 通过在确认消息中携带显式的非漫游指示信息或不携带表示漫游的指示信 息来实现， 即不携带漫游的指示信息即表示 UE处于非漫游。 UE可以访问 被赞助数据连接业务， 在 UE访问被赞助数据连接业务过程中， 如果 UE发 生移动进而发生漫游， 当 PCRF确定 UE漫游时， PCRF仍需要将 UE漫游 的指示信息发送给 AF。
图 4是本发明实现被赞助数据连接的处理方法的实施例三的流程示意 图，是在 UE访问被赞助数据连接过程中， UE发生移动导致 UE处于漫游， 当 PCRF确定 UE漫游时， PCRF将 UE漫游的指示信息发送给 AF的具体 实现方式一， 如图 4所示， 基于图 5所示的家乡路由漫游架构， 该方法包 括以下步驟：
步驟 401 , UE建立 IP-CAN会话， 在建立 IP-CAN会话过程中或建立 IP-CAN会话后 , PCEF和 /或 BBERF将 UE接入网络的信息通知给 PCRF, 该信息中携带 UE当前接入的网络的标识， PCRF可以根据该信息中携带的 UE当前接入的网络的标识判断 UE是否处于非漫游。
步驟 402, UE通过建立的 IP-CAN会话向 ASP发起业务请求， ASP和 赞助服务器将被赞助数据连接的业务信息发送给 AF。
步驟 403 , AF将收到的被赞助数据连接的业务信息提供给 PCRF。 步驟 404, PCRF对收到的被赞助数据连接业务信息进行授权后， 向 AF返回确认消息； 当 PCRF根据 UE当前接入的网络的标识确定 UE处于 非漫游时， PCRF在返回的确认信息中携带 UE处于非漫游的指示信息， 其 中， 该指示信息可以通过在确认消息中携带显式的非漫游指示信息或不携 带表示漫游的指示信息来实现，即不携带漫游的指示信息表示 UE处于非漫 游。
步驟 405, AF收到确认信息后，通知 ASP向 UE提供被赞助数据连接； 步驟 406 , 当 UE发生漫游时， PCEF向 PCRF上报 UE漫游的事件； 具体的， UE发生移动导致发生漫游， PCEF所在的网元设备可以获知 UE发生漫游， 然后将 UE漫游的信息上报给 PCEF; PCEF根据 PCRF预先 向自身发送的获知 UE漫游的事件的请求，确定需要向 PCRF请求新的 PCC 策略， 因此 PCEF向 PCRF上报 UE漫游的事件， 此外， PCEF还可以将 UE 当前漫游的网络的标识发送给 PCRF。
步驟 407, PCRF收到 PCEF上报的 UE漫游的事件时， 确定 UE漫游， 并向 PCEF返回确认消息。
步驟 408 , PCEF根据 PCRF的请求将用量上 4艮给 PCRF;
具体的， 该步驟为可选步驟， 即如果 PCRF预先将制定的用量监测策 略发送给 PCEF, 则 PCRF请求 PCEF上报用量， PCEF收到 PCRF的请求 后， 将累计的用量上报给 PCRF。
步驟 409, PCRF将 UE漫游的指示信息发送给 AF;
具体的， PCRF将 UE漫游的指示信息发送给 AF, 用于通知 AF所述 UE处于漫游； 其中， 所述 UE漫游的指示信息可以通过如下方式实现： 特 别动作（ Specific Action )公共陆地移动网络变化（ PLMN_CHANGE, Public Land Mobile Network_CHANGE ), 或漫游改变事件， 或消息中携带用于标 识 UE漫游的参数； 如果 AF预先提供了 UT给 PCRF, 则 PCRF还需要向 AF上报累计的用量； 此外， PCRF还可以向 AF提供 UE当前漫游的网络的 标识。
这里，无论 AF是否预先向 PCRF发送获知 UE漫游的事件的请求， PCRF 都需要在确定 UE漫游时， 将 UE漫游的事件通知给 AF。
步驟 410, AF收到 UE漫游的指示信息发送后， 向 PCRF返回确认消 息， 并可以根据本地策略确定是继续提供被赞助数据连接， 还是终止被赞 助数据连接；
如果 AF决定终止被赞助数据连接， 则 AF将向 PCRF发起 AF会话终 结的流程； 如果 AF继续提供被赞助数据连接， 则 AF可以向 PCRF提供新 的被赞助数据连接的业务信息。
当 AF提供新的被赞助数据连接的业务信息时， 该方法还包括： 步驟 411 , PCRF更新之前制定的 PCC策略， 或 PCC策略和用量监测 策略， 并将更新的策略发送给 PCEF。
步驟 412, PCEF执行收到的策略， 并向 PCRF返回确认消息， 此时 UE 可以继续访问被赞助数据连接。
实施例四
图 6是本发明实现被赞助数据连接的处理方法的实施例四的流程示意 图，是在 UE访问被赞助数据连接过程中， UE发生移动导致 UE处于漫游， 当 PCRF确定 UE漫游时， PCRF将 UE漫游的指示信息发送给 AF的具体 实现方式二， 如图 6所示， 基于图 5所示的家乡路由漫游架构， 该方法包 括以下步驟：
步驟 601~步驟 606同步驟 401~步驟 406。
步驟 607， PCRF向 AF发送请求终结被赞助数据连接的消息， 其中携 带 UE处于漫游的原因值；
具体的， PCRF向 AF发送请求终结被赞助数据连接的消息即请求终结
AF会话的消息， 其中携带请求终结的原因值， 该原因值是 UE处于漫游的 原因值，用于指示 AF该 UE处于漫游；如果 AF预先提供了用量阈值， PCRF 还需要向 AF提供用户已经消耗的累计用量。
步驟 608， AF收到 PCRF发送的请求终结被赞助数据连接的消息后， 发起终结建立的 AF会话的流程； 此外， AF与 ASP进行交互， 通知 ASP 停止向 UE提供被赞助数据连接。
实施例五
图 7是本发明实现被赞助数据连接的处理方法的实施例五的流程示意 图，是在 UE访问被赞助数据连接过程中， UE发生移动导致 UE处于漫游， 当 PCRF确定 UE漫游时， PCRF将 UE漫游的指示信息发送给 AF的具体 实现方式三， 如图 7所示， 基于图 5所示的家乡路由漫游架构， 该方法包 括以下步驟：
步驟 701同步驟 401;
步驟 702, UE访问被赞助数据连结。
步驟 702的具体实现步驟参见步驟 402~步驟 405。
步驟 703, 当 UE发生漫游时， BBERF向 V-PCRF发送请求建立网关 控制会话的消息；
具体的， 当 UE发生移动进而发生漫游时， UE会由源网络切换到目标 网络， 本实施例中， 源网络称为归属网络， 目标网络称为拜访网络； 在切 换过程中， UE将会请求接入拜访网络的服务网关或接入网关， 位于 UE漫 游网络（即拜访网络 ) 中的服务网关或接入网关中的 BBERF收到请求后， 将向拜访地的 PCRF ( V-PCRF, Visit-PCRF )发送请求建立网关控制会话的 消息， 其中携带用户标识和 PDN标识。
步驟 704 , 当 V-PCRF根据请求建立网关控制会话的消息确定 UE是漫 游用户时， 向 PCRF发送请求建立 S9会话的消息， 其中携带 UE漫游网络 的标识；
具体的， V-PCRF收到请求建立网关控制会话地消息， 根据其中携带的 用户标识知道该 UE的归属网信息， 进而确定 UE产生漫游， 是漫游用户， 当 V-PCRF确定 UE是漫游用户时， V-PCRF向 PCRF发送请求建立 S9会 话的消息， 其中携带用户标识和 PDN标识。 步驟 705, PCRF收到 V-PCRF上发送的请求建立 S9会话的消息， 确 定 UE漫游。
步驟 706, PCRF根据收到的请求建立 S9会话的消息中的用户标识和 PDN标识将 S9会话与建立的 Gx会话进行关联， 用于对同一个 IP-CAN进 行控制； PCRF根据制定的 PCC策略制定 QoS策略， 并发送给 V-PCRF; 其中， 所述 Gx会话是在建立 IP-CAN会话过程中建立的 PCEF和 PCRF之 间的会话。
步驟 707 , V-PCRF将收到的 QoS策略发送给 BBERF;
步驟 708,服务网关或接入网关向分组数据网络网关发送代理绑定更新 消息， 消息中携带用户标识和 PDN标识。
步驟 709 , 位于分组数据网络网关的 PCEF向 PCRF发送 IP-CAN会话 的修改指示。
步驟 710, 如果 PCC策略出现更新， PCRF向 PCEF返回确认消息， 确 认消息中携带更新后的 PCC策略。
步驟 711 ,分组数据网络网关向服务网关或接入网关返回代理绑定确认 消息， 其中携带分配的 IP地址； 服务网关或接入网关返回应答请求建立网 关控制会话消息， 其中携带 IP地址。
步驟 712, PCEF根据 PCRF的请求将用量上报给 PCRF;
具体的，该步驟为可选步驟，如果 PCRF之前向 PCEF下发了用量监测 策略， 请求 PCEF执行用量监测， 则本实施例中， PCEF需要根据 PCRF的 请求上报累计的用量。
步驟 713 , PCRF将 UE漫游的指示信息发送给 AF;
具体的， 当 PCRF确定 UE漫游时， PCRF向 AF上报 UE漫游的事件； 所述 UE漫游的事件具体可以通过以下方式实现：特别动作（ Specific Action ) 公共陆地移动网络变化 ( PLMN_CHANGE , Public Land Mobile Network_CHANGE )或漫游改变事件； 或直接在消息中携带标识 UE漫游 的参数； 这里， 若 AF提供了用量阈值， 则 PCRF还需要向 AF提供累计用 量； 此外， PCRF还可以向 AF提供 UE漫游的网络的标识。
这里，无论 AF是否预先向 PCRF发送获知 UE漫游的事件的请求， PCRF 都需要在确定 UE漫游时， 将 UE漫游的事件通知给 AF。
步驟 714, AF收到 UE漫游的指示信息发送后， AF向 PCRF返回确认 消息， 并可以根据本地策略确定是继续提供被赞助数据连接， 还是终止被 赞助数据连接；
如果 AF决定终止被赞助数据连接， 贝' J AF将向 PCRF发起 AF会话终 结的流程； 如果 AF继续提供被赞助数据连接， 则 AF可以向 PCRF提供新 的被赞助数据连接的业务信息。
当 AF提供新的被赞助数据连接的业务信息时， 该方法还包括： 步驟 715, PCRF将更新之前制定的 PCC策略， 或 PCC策略和用量监 测策略， 并将更新的策略发送给 PCEF。
步驟 716, PCEF执行收到的策略， 并向 PCRF返回确认消息， 此时 UE 可以继续访问被赞助数据连接。
实施例六
图 8是本发明实现被赞助数据连接的处理方法的实施例六的流程示意 图，是在 UE访问被赞助数据连接过程中， UE发生移动导致 UE处于漫游， 当 PCRF确定 UE漫游时， PCRF将 UE漫游的指示信息发送给 AF的具体 实现方式四， 如图 8所示， 基于图 5所示的家乡路由漫游架构， 该方法包 括以下步驟：
步驟 801~步驟 812同步驟 701~步驟 712。
步驟 813, PCRF向 AF发送请求终结被赞助数据连接的消息， 其中携 带 UE处于漫游的原因值； 具体的， PCRF向 AF发送请求终结被赞助数据连接的消息即请求终结 AF会话的消息， 其中携带请求终结的原因值， 该原因值是 UE处于漫游的 原因值，用于指示 AF该 UE处于漫游；如果 AF预先提供了用量阈值， PCRF 还需要向 AF提供用户已经消耗的累计用量。
步驟 814, AF收到 PCRF发送的请求终结被赞助数据连接的消息后， 发起终结建立的 AF会话的流程。 此外， AF与 ASP进行交互， ASP停止向 UE提供被赞助数据连接。
需要特别说明的是，本发明中所述的 PCRF为归属地的 PCRF( H-PCRF, Home-PCRF )0
为实现上述方法， 本发明还提供一种策略与计费规则功能实体， 该策 略与计费规则功能实体， 用于该策略与计费规则功能实体， 用于 UE建立 IP-CAN会话并访问被赞助数据连接， 当确定 UE漫游时， 将 UE漫游的指 示信息发送给 AF。
当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示 信息发送给 AF为： 所述 AF向所述 PCRF初始提供被赞助数据连接的会话 信息时， 所述 PCRF确定所述 UE漫游， 并将所述 UE漫游的指示信息发送 给所述 AF; 或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF 确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给所述 AF。
当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示 信息发送给 AF为： 所述 AF向所述 PCRF初始提供被赞助数据连接的会话 信息时， 所述 PCRF确定所述 UE漫游， 并向所述 AF返回拒绝消息； 或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF确定所述 UE漫游 时， 所述 PCRF向所述 AF发送请求终结所述被赞助数据连接的消息。
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时， 所述 PCRF确定所述 UE漫游为： 在所述 UE建立 IP-CAN会话过程中或建立 IP-CAN会话后， 策略和计费执行功能实体（PCEF )和 /或承载绑定和事件 报告功能实体（ BBERF )向所述 PCRF上报 UE漫游的指示信息，所述 PCRF 根据所述 UE漫游的指示信息确定所述 UE漫游。
当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示 信息发送给 AF为： 当所述 UE漫游时， PCEF向所述 PCRF上报 UE漫游 的事件； 所述 PCRF根据所述 UE漫游的事件， 确定所述 UE漫游， 并将所 述 UE漫游的指示信息发送给所述 AF。
当所述 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示 信息发送给 AF为：当所述 UE漫游时，拜访网络的 BBERF向拜访地的 PCRF ( V-PCRF )发送请求建立网关控制会话的消息； 所述 V-PCRF确定所述 UE 是漫游用户时， 向所述 PCRF发送请求建立 S9会话的消息； 所述 PCRF根 据所述请求建立 S9会话的消息确定所述 UE漫游， 将所述 UE漫游的指示 信息发送给所述 AF。
所述拒绝消息中携带所述 UE漫游的原因值；所述请求终结所述被赞助 数据连接的消息中携带所述 UE漫游的原因值。
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， 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等， 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种被赞助数据连接的处理方法， 用户设备 ( UE )建立 IP连接接 入网 （IP-CAN )会话并访问被赞助数据连接； 其特征在于， 该方法包括： 当策略与计费规则功能实体（ PCRF )确定所述 UE漫游时， 所述 PCRF 将所述 UE漫游的指示信息发送给应用功能实体（AF ) 。
2、 根据权利要求 1所述的方法， 其特征在于， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时， 所述 PCRF确定所述 UE漫游， 并将 UE漫游的指示信息发送给所述 AF;
或， 所述 UE访问被赞助数据连接过程中， 当所述 PCRF确定所述 UE 漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给所述 AF。
3、 根据权利要求 1所述的方法， 其特征在于， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时， 所述 PCRF确定所述 UE漫游， 并向所述 AF返回拒绝消息；
或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF确定所述 UE漫游时， 所述 PCRF向所述 AF发送请求终结所述被赞助数据连接的消
4、 根据权利要求 2所述的方法， 其特征在于， 所述 AF向所述 PCRF 初始所述提供被赞助数据连接的会话信息时，所述 PCRF确定所述 UE漫游 为：
在所述 UE建立 IP-CAN会话过程中或建立 IP-CAN会话后， 策略和计 费执行功能实体（PCEF )和 /或承载绑定和事件报告功能实体（BBERF )向 所述 PCRF上报 UE漫游的指示信息， 所述 PCRF根据所述 UE漫游的指示 信息确定所述 UE漫游。
5、 根据权利要求 2所述的方法， 其特征在于， 所述当所述 PCRF确定 所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息发送给 AF为： 当所述 UE漫游时，所述 PCEF向所述 PCRF上报所述 UE漫游的事件； 所述 PCRF根据所述 UE漫游的事件， 确定所述 UE漫游， 并将所述 UE漫 游的指示信息发送给所述 AF。
6、 根据权利要求 2所述的方法， 其特征在于， 所述当所述 PCRF确定 所述 UE漫游时， PCRF将所述 UE漫游的指示信息发送给 AF为：
当 UE漫游时， 拜访网络的 BBERF向拜访地的 PCRF ( V-PCRF )发送 请求建立网关控制会话的消息；
所述 V-PCRF确定所述 UE是漫游用户时，向所述 PCRF发送请求建立 S9会话的消息；
所述 PCRF根据所述请求建立 S9会话的消息确定所述 UE漫游， 将所 述 UE漫游的指示信息发送给所述 AF。
7、 根据权利要求 3所述的方法， 其特征在于，
所述拒绝消息中携带所述 UE漫游的原因值；
所述请求终结所述被赞助数据连接的消息中携带所述 UE 漫游的原因 值。
8、 根据权利要求 5或 6所述的方法， 其特征在于， 该方法还包括： 所述 PCRF向所述 AF提供所述 UE的累计用量。
9、 根据权利要求 2所述的方法， 其特征在于， 该方法还包括： 所述 AF接收到所述 UE漫游的指示信息后，终止所述被赞助数据连接 或更新所述被赞助数据连接。
10、 一种策略与计费规则功能实体， 其特征在于，
该策略与计费规则功能实体，用于 UE建立 IP-CAN会话并访问被赞助 数据连接后， 确定 UE漫游时， 将 UE漫游的指示信息发送给 AF。
11、 根据权利要求 10所述的策略与计费规则功能实体， 其特征在于， 所述当 PCRF确定所述 UE漫游时， 所述 PCRF将所述 UE漫游的指示信息 发送给 AF为：
所述 AF向所述 PCRF初始提供被赞助数据连接的会话信息时，当 PCRF 确定所述 UE漫游， 并向所述 AF返回拒绝消息；
或， 所述 UE访问所述被赞助数据连接过程中， 当所述 PCRF确定所述 UE漫游时， 所述 PCRF向所述 AF发送请求终结所述被赞助数据连接的消
PCT/CN2012/071218 2011-03-28 2012-02-16 被赞助数据连接的处理方法及策略与计费规则功能实体 WO2012129992A1 (zh)

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