WO2014094488A1 - 漫游本地业务的计费策略方法及装置 - Google Patents

漫游本地业务的计费策略方法及装置 Download PDF

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Publication number
WO2014094488A1
WO2014094488A1 PCT/CN2013/085413 CN2013085413W WO2014094488A1 WO 2014094488 A1 WO2014094488 A1 WO 2014094488A1 CN 2013085413 W CN2013085413 W CN 2013085413W WO 2014094488 A1 WO2014094488 A1 WO 2014094488A1
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WIPO (PCT)
Prior art keywords
credit
ocs
threshold
local service
roaming local
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PCT/CN2013/085413
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English (en)
French (fr)
Inventor
吴锦花
周晓云
夏勇
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中兴通讯股份有限公司
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Publication of WO2014094488A1 publication Critical patent/WO2014094488A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1453—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network
    • H04L12/1467—Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network involving prepayment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8038—Roaming or handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/83—Notification aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/83—Notification aspects
    • H04M15/85—Notification aspects characterised by the type of condition triggering a notification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/83—Notification aspects
    • H04M15/85—Notification aspects characterised by the type of condition triggering a notification
    • H04M15/852—Low balance or limit reached
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/83—Notification aspects
    • H04M15/85—Notification aspects characterised by the type of condition triggering a notification
    • H04M15/854—Available credit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing

Definitions

  • the present invention relates to the field of communications, and in particular, to a charging policy method and apparatus for roaming local services.
  • BACKGROUND OF THE INVENTION The 3GPP, 3rd Generation Partnership Project evolved packet system
  • EPS Evolved Packet System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobility Management Entity
  • S-GW Serving
  • PDN GW Packet Data Network Gateway
  • PCRF Policy and Charging Rules Function
  • PCRF Policy and Charging Rules Function
  • the HSS is a permanent storage location for user subscription data, located in the home network to which the user subscribes.
  • the MME is the location where the subscriber subscription data is stored in the current network, and is responsible for terminal-to-network non-access stratum signaling management, terminal security verification function, terminal mobility management, user idle mode tracking and paging management functions, and Bearer management.
  • S-GW which is the gateway of the core network to the wireless system, is responsible for the user plane bearer of the terminal to the core network, the data buffer in the terminal idle mode, the function of initiating the service request by the network side, the lawful interception and the packet data routing and forwarding function;
  • the gateway is responsible for counting the situation in which the user terminal uses the wireless network, and generates the CDRs of the terminal using the wireless network, and transmits the CDRs to the charging gateway.
  • P-GW which is the gateway of the evolution system and the external packet data network of the system, is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (IP) address allocation, charging function, packet filtering, and policy of the terminal. Control and other functions.
  • IP Internet Protocol
  • the PDN is the carrier's IP service network, which provides IP services to users through the carrier's core network.
  • the Policy Control and Charging Control (PCC) is embedded in the EPS architecture.
  • the PCC functional entities in the EPS architecture can be distributed as follows:
  • the PCRF is the policy and charging rule function entity, and the policy and charging execution function entity.
  • PCEF Policy and Charging Enforcement Function
  • BBERF Bearer Binding and Event Report Function
  • AF Application Function
  • the SPR Spread Profile Repository
  • the corresponding PDN network can be found by the Access Point Name (APN).
  • IP-Access IP-Connected Network
  • the PCC is applicable to all 3GPP IP-CANs, and its architecture is shown in Figure 2. ( Figure 2 is a schematic diagram of the PCC non-roaming structure according to the related art).
  • the PCRF is mainly responsible for the formulation of the policy and charging rules, and the PCC will be developed through the Gx interface.
  • the policy and charging rules are sent to the PCEF.
  • the PCEF installs and executes the PCC policy, reports related events, and exchanges accounting information with the charging system.
  • the PCRF sends the service quality of service (QoS) to the BBERF through the Gxx interface.
  • the BBERF does not exchange accounting information with the accounting system. It is only responsible for the bearer binding and reporting of related events.
  • the AF provides the service information to the PCRF through the Rx interface.
  • the SPR saves the service information subscribed by the user.
  • the PCRF can query the SPR for the service information subscribed by the user through the Sp interface.
  • the PCEF sends the online charging information to the online charging system (OCS) through the Gy interface, and is responsible for the online charging statistics.
  • the offline charging information is sent to the offline charging system (OFCS, Offline Charging System) through the Gz interface.
  • the PCRF can dynamically send a PCC policy to the PCEF, and the policy information includes QoS and charging information.
  • the PCRF formulates a PCC policy according to the service-related information provided by the AF, the bearer-related information reported by the PCEF, and the service information subscribed by the user in the SPR.
  • the AF an access point used to provide business applications.
  • the network resources used by these business applications require dynamic policy control.
  • the AF delivers related service information to the PCRF. If the service information is consistent with the policy of the PCRF, the PCRF accepts the negotiation; otherwise, the PCRF rejects the negotiation and gives the business parameters acceptable to the PCRF upon feedback.
  • the AF can then return these parameters to the user equipment (UE, User Equipment) 0 where the interface between the AF and the PCRF is the R interface.
  • UE User Equipment
  • the PCRF is the core of the PCC and is responsible for policy decision making and billing rules.
  • the PCRF provides network control rules based on service data flows, including detection of traffic data flows, Gating Control Quality of Service (QoS) control, and traffic flow based charging rules.
  • QoS Quality of Service
  • the PCRF sends its formulated policies and charging rules to the PCEF for execution. At the same time, the PCRF also needs to guarantee these rules. Then it is consistent with the user's contract information.
  • the basis for formulating the policy and charging rules by the PCRF includes: service-related information obtained from the AF, user policy charging control subscription information related to policy control and charging obtained from the SPR, and obtaining from the PCEF through the Gx interface. Information about the bearer-related network.
  • the PCEF is usually located in the gateway (GW, Gate-Way) and performs the policy and charging rules established by the PCRF on the bearer plane.
  • the PCEF detects the service data flow according to the service data flow filter in the rule sent by the PCRF, and then performs the policy and charging rule defined by the PCRF for the service data flow; when the bearer is established, the PCEF performs the rule according to the PCRF.
  • the resource allocation, and the gating control is performed according to the information provided by the AF; at the same time, the PCEF triggers reporting the event occurring on the bearer network according to the event subscribed by the PCRF; according to the charging rule sent by the PCRF, the PCEF performs the corresponding service data flow charging operation.
  • Billing can be either online charging or offline charging.
  • the PCEF In the case of online charging, the PCEF needs to perform credit management together with the Online Charging System (OCS); when offline charging, the relevant calculation between the PCEF and the Offline Charging System (OFCS) Fee information.
  • OCS Online Charging System
  • OFCS Offline Charging System
  • the interface between the PCEF and the PCRF is a Gx interface
  • the interface between the PCEF and the OCS is a Gy interface
  • the interface between the PCEF and the OFCS is a Gz interface.
  • the PCEF can also be enhanced with a Traffic Detection Function (TDF).
  • TDF Traffic Detection Function
  • the PCEF can perform application detection and policy enforcement (such as gating, redirection, and bandwidth limitation) according to the local configuration or the ADC rules issued by the PCRF including the Application Detection and Control (ADC).
  • ADC Application Detection and Control
  • PCEFs are generally located on gateways of the network, such as the Packet Data Network Gateway (PDN-GW) of the EPS, the GPRS Gateway Support Node (GGSN) in the General Packet Radio Service (GPRS), and the Internet of the Internet ( I-WLAN, Interworking WLAN), such as Packet Data Gateway (PDG).
  • PDN-GW Packet Data Network Gateway
  • GGSN GPRS Gateway Support Node
  • I-WLAN, Interworking WLAN such as Packet Data Gateway (PDG).
  • TDF can also be deployed independently.
  • the TDF and the PCRF are connected to the Sd interface.
  • the TDF can perform application detection and policy execution according to the application detection control rules delivered by the pre-configuration or PCRF.
  • the PCRF provides application detection control rules or activates TDF pre-configuration rules for the TDF, and the policy control execution operations of the independent TDF functions include gating, redirection, and bandwidth limitation.
  • the TDF reports the related events and information of the detected service/flow to the PCRF (for example, reports the start and end of the detected service/flow to the PCRF), and sends a description of the service data flow to the PCRF, and transmits the flow for the flow from the PCRF. Signaling of detected traffic detection and policy rules.
  • the Bearer Binding and Event Reporting Function is usually located in the Access Network Gateway.
  • BBERF Bearer Binding and Event Reporting Function
  • the SPR stores user policy charging control subscription information related to policy control and charging.
  • the interface between SPR and PCRF is the Sp interface.
  • OCS and PCEF jointly complete the control and management of user credit under online charging mode.
  • the OFCS and the PCEF jointly perform the charging operation in the offline charging mode.
  • the above PCC architecture implements a packet data network (PDN) for the UE through various functional entities.
  • PDN packet data network
  • FIG. 3 is a schematic diagram of a PCC roaming visited access architecture according to the related art
  • the PCEF is located in the visited network, and the information of the visited network and the home network is exchanged through the visited network PCRF (V-PCRF) and the home network PCRF ( H-PCRF) is transmitted between the roaming interface S9 interface.
  • V-PCRF visited network PCRF
  • H-PCRF home network PCRF
  • the HPCRF formulates a PCC policy, sends a PCC rule to the VPCRF, and forwards it to the PCEF/BBERF.
  • the demand for personalized services for mobile communications is increasing, and the types of services of different operators are quite different.
  • the tariffs of home network services used in roaming are high when roaming, which requires the user to roam to the visited network.
  • the local service (called roaming local service) of the visited network can be accessed through the terminal and ID information that is subscribed to the home network, thereby not only maximizing the user experience and reducing the tariff, but also It can also provide users with special services that are not available in the visited network of the home carrier network.
  • the roaming local service belongs to the visited network, the subscription with respect to the home network is independent. Therefore, the related policy and resource authorization for the user to access the roaming local service function needs to be decided by the visited network VPCRF.
  • the user belongs to the home network, and the tariff account is at the home network OCS. Since the roaming local service belongs to the visited network, the home network is contracted independently (the home network does not necessarily have such a service, or has such a service but the two networks are inconsistent), and therefore the service information belongs to the network.
  • the OCS cannot identify the credit authorization for online charging for roaming local services.
  • the online charging function can be performed only by the home OCS, and the visited network element (for example, the proxy OCS) interface can be used to the home OCS, or the visited VPCRF can be used to transmit the credit.
  • the request is sent to the home HPCRF and forwarded to the OCS for execution.
  • these methods of the prior art can only be used for the home subscription service, and the home PCRF or OCS can obtain the service and tariff subscription information of the home location.
  • the home network is likely to have no subscription for related services, so the online charging function for roaming local services cannot be implemented through various solutions of the prior art.
  • a solution for the roaming local service provided by the prior art is that the roaming user goes to the visited network to sign up and open the roaming tariff account, and the tariff signing account is stored in the OCS (ie, V-OCS) of the visited network.
  • the visited network OCS ie, V-OCS
  • V-OCS can directly perform account credit and balance management on the roaming user according to the visited network contract, and implement credit control without requesting credit control from the home network OCS (ie, H-OCS).
  • the problem with this technical solution is that the user needs to re-pay the fee at the roaming place, and the large balance in the original home account cannot be used.
  • the present invention provides a charging policy method and apparatus for roaming local services to at least solve the above problems.
  • a charging policy method for roaming local service including: a visited credit online charging system (V-OCS) receiving policy and a credit control request message sent by a charging execution function entity (PCEF) (Credit Control Request), wherein the credit control request message is used to request the PCEF to use the current user's credit limit when performing the charging; the V-OCS determines, according to the credit control request message, whether the service requested by the current user is a roaming local service, If the result of the determination is yes, the credit threshold request message is sent to the home online charging system (H-OCS), and the credit threshold response message returned by the H-OCS is received, where the credit threshold response message carries the home network.
  • V-OCS visited credit online charging system
  • PCEF charging execution function entity
  • the V-OCS determines the credit limit according to the credit threshold, and carries the credit amount in the credit control response message and sends it to the PCEF to perform charging.
  • the credit threshold request message includes at least one of the following: service related information related to the service requested by the current user, and authorization information of the current user, where the service related information includes: a roaming local service identifier/indication; the authorization information includes: roaming Local business authorization instructions.
  • the method includes: in the case that the credit threshold request message includes the roaming local service identifier/indication, the H-OCS is roamed according to the Local service identifier/indication, determining whether the service requested by the current user is a roaming local service, if it is a roaming book In the case of the local service, the credit threshold is carried in the credit threshold response message and sent to the V-OCS. In the case that the credit threshold request message includes the roaming local service authorization indication, the H-OCS determines whether the current user is the roaming local service authorization indication.
  • the roaming local service authorized user if it is the roaming local service authorized user, carries the credit threshold in the credit threshold response message and sends the credit threshold to the V-OCS; the credit threshold request message includes the roaming local service identifier/indication and the roaming local service authorization indication
  • the H-OCS determines whether the service requested by the current user is a roaming local service according to the roaming local service identifier/indication, and determines whether the current user is a roaming local service authorized user according to the roaming local service authorization indication. If the judgment result is yes, the H-OCS carries the credit threshold in the credit threshold response message and sends it to the V-OCS.
  • the credit threshold comprises at least one of the following: an account amount threshold, a traffic threshold, a time threshold, and an event threshold.
  • the V-OCS sends a credit threshold request message to the H-OCS in one of the following ways: proxy mode, redirection mode.
  • proxy mode redirection mode.
  • the V-OCS when the credit threshold satisfies a predetermined stop condition, the V-OCS again requests a new credit threshold from the H-OCS.
  • the method further includes: when the last roaming local service under the same access point name (APN) of the current user ends, V- The OCS reports to the H-OCS a termination report with usage and/or remaining usage of the credit threshold.
  • the method further includes: the H-OCS carrying the authorized credit management indication in the credit threshold response message and sending the message to the V-OCS, where The authorized credit management instruction is used to inform the V-OCS to perform credit management of online charging.
  • a charging policy apparatus for roaming local service which is located in a visited online charging system (V-OCS), and includes: a receiving module, configured to receive a policy and a charging execution function entity (a credit control request message sent by the PCEF), wherein the credit control request message is used to request the PCEF to use the current user's credit limit when performing the charging; the determining module is configured to determine, according to the credit control request message, whether the service requested by the current user is The roaming local service; the execution module is configured to send a credit threshold request message to the home online charging system (H-OCS) and receive the credit threshold response returned by the H-OCS if the judgment result of the judging module is yes a message, wherein the credit threshold response message carries a credit threshold that the home network can authorize the current user to use in the visited network; the sending module is configured to determine the credit limit according to the credit threshold, and carry the credit amount in the credit control response message Billing is performed for the PCEF.
  • V-OCS visited online charging system
  • the credit threshold request message includes at least one of the following: service related information related to the service requested by the current user, and authorization information of the current user, where the service related information includes: a roaming local service identifier/indication; the authorization information includes: roaming Local business authorization instructions.
  • the credit threshold comprises at least one of the following: an account amount threshold, a traffic threshold, a time threshold, and an event threshold.
  • the execution module sends the credit threshold request message to the H-OCS in one of the following ways: proxy mode, redirect mode.
  • the execution module again requests a new credit threshold from the H-OCS.
  • the apparatus further comprises: a reporting module, configured to: after the execution module sends the credit control response message to the PCEF to perform charging, and when the current user has the last roaming local service under the same access point name (APN) At the end, the end report with the usage threshold and/or the remaining usage with the credit threshold is reported to the H-OCS.
  • a reporting module configured to: after the execution module sends the credit control response message to the PCEF to perform charging, and when the current user has the last roaming local service under the same access point name (APN) At the end, the end report with the usage threshold and/or the remaining usage with the credit threshold is reported to the H-OCS.
  • a charging policy device for roaming local service which is located at a Home Online Charging System (H-OCS), and includes: a receiving module, configured to receive an online charging system from a visited place ( a credit threshold request message of the V-OCS), wherein the credit threshold request message is that the V-OCS determines the current user request according to the credit control request message after receiving the credit control request message sent by the policy and charging execution function entity (PCEF)
  • PCEF policy and charging execution function entity
  • the service is sent in the case of roaming the local service, where the credit control request message is used to request the PCEF to use the credit limit of the current user when performing the charging;
  • the sending module is configured to send the bearer network to the V-OCS.
  • a credit threshold response message authorizing the current user to be able to access the credit threshold used in the network, wherein the credit threshold can be used by the V-OCS and the credit limit can be determined, and the credit amount can be carried by the V-OCS in the credit control response message.
  • the PCEF performs billing.
  • the apparatus further includes: a first execution module, configured to determine, according to the roaming local service identifier/indication, whether the service requested by the current user is a roaming local service, if the credit threshold request message includes a roaming local service identifier/indication And if the roaming local service is, the sending module carries the credit threshold in the credit threshold response message and sends the message to the V-OCS; and the second executing module is configured to: according to the roaming, the roaming local service authorization indication is included in the credit threshold request message, according to the roaming
  • the local service authorization instruction determines whether the current user is a roaming local service authorized user, and if it is a roaming local service authorized user, the indication sending module carries the credit threshold in the credit threshold response message and sends the message to the V-OCS; and the third execution module, sets In the case that the credit threshold request message includes the roaming local service identifier/indication and the roaming local service authorization indication, determining, according to the roaming local service identifier/
  • the sending module is further configured to send the authorized credit management indication in the credit threshold response message to the V-OCS, wherein the authorized credit management indication is used to inform the V-OCS to perform credit management of the online charging.
  • the interaction between the visited OCS and the home OCS is adopted to enable the visited OCS to obtain the credit threshold of the home OCS, and the credit management method is implemented by the visited OCS, which solves the problem that the related technology cannot be better realized.
  • the problem of the online charging function of the roaming local service is carried out by the visited network, thereby achieving the effect of facilitating the session creation, modification and termination process of the roaming local service.
  • FIG. 1 is a schematic diagram of an EPS system architecture according to the related art
  • FIG. 2 is a schematic diagram of a PCC non-roaming composition structure according to the related art
  • FIG. 3 is a schematic diagram of a PCC roaming visited access architecture according to the related art
  • FIG. 5 is a schematic diagram of a PCC roaming visited access architecture according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a UE roaming IP according to a preferred embodiment of the present invention.
  • - Flowchart for creating a CAN session Figure 7 is a flowchart for terminating an IP-CAN session when a UE roams according to a preferred embodiment of the present invention
  • Figure 8 is a charging of a roaming local service at a V-OCS according to an embodiment of the present invention
  • FIG. 9 is a structural block diagram of a charging policy device located in a V-OCS roaming local service according to a preferred embodiment of the present invention
  • FIG. 10 is a roaming local service located in an H-OCS according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a charging policy method for roaming a local service according to an embodiment of the present invention. As shown in FIG.
  • Step S402 a visited online charging system
  • the V-OCS receives a credit control request message (Credit Control Request) sent by the Policy and Charging Enforcement Function Entity (PCEF), where the credit control request message is used to request the PCEF to use the credit line of the current user when performing the charging.
  • Step S404 The V-OCS determines, according to the credit control request message, whether the service requested by the current user is a roaming local service, and if the determination result is yes, sends a credit threshold request message to the home online charging system (H-OCS).
  • H-OCS home online charging system
  • the V-OCS determines the credit limit according to the credit threshold, and carries the credit amount in the credit control response message and sends the credit to the PCEF to perform charging.
  • the credit threshold request message includes at least one of the following: service related information related to the service requested by the current user, and authorization information of the current user, where the service related information includes: roaming local service identifier/indication; The information includes: Roaming local service authorization instructions.
  • the credit threshold request message is sent to the home online charging system at the V-OCS.
  • the method includes: if the credit threshold request message includes the roaming local service identifier/indication, the H-OCS determines, according to the roaming local service identifier/indication, whether the service requested by the current user is a roaming local service, if If the local service is roamed, the credit threshold is carried in the credit threshold response message and sent to the V-OCS. In the case that the credit threshold request message includes the roaming local service authorization indication, the H-OCS determines whether the current user is based on the roaming local service authorization indication.
  • the credit threshold is carried in the credit threshold response message and sent to the V-OCS; the credit threshold request message includes the roaming local service identifier/indication and the roaming local service authorization indication.
  • the H-OCS determines whether the service requested by the current user is a roaming local service, and according to the roaming local service authorization The H-OCS carries the credit threshold in the credit threshold response message and sends it to the V-OCS in the case that the current two users are the authorized users of the roaming local service.
  • the credit threshold includes at least one of the following: an account amount threshold, a traffic threshold, a time threshold, and an event threshold.
  • the V-OCS sends a credit threshold request message to the H-OCS in one of the following ways: proxy mode, redirection mode.
  • the V-OCS when the credit threshold satisfies a predetermined stop condition, the V-OCS again requests a new credit threshold from the H-OCS.
  • the method further includes: when the last roaming local service under the same access point name (APN) of the current user ends At the time, the V-OCS reports to the H-OCS a termination report carrying the usage threshold and/or remaining usage of the credit threshold.
  • the H-OCS may carry the authorization credit management indication in the credit threshold response message to the V-OCS, and the H-OCS may carry the credit threshold in the credit threshold response message to the V-OCS, where The authorized credit management instruction is used to inform the V-OCS to perform credit management of online charging. Referring to FIG. 5, FIG.
  • FIG. 5 is a schematic diagram of a PCC roaming access access architecture according to an embodiment of the present invention.
  • the charging policy method of the roaming local service provided in this embodiment can completely pass the PCC shown in FIG.
  • the roaming visit access architecture is implemented.
  • the visited network can implement the online charging function for performing roaming local services to the roaming users, so that the roaming local services of the online charging can be used when the user roams to the visited network.
  • the visited PCEF and the visited OCS are interacted through the Gy interface, and the visited OCS and the home OCS are visited.
  • a new interface (for example, the diameter protocol) is implemented to implement the credit threshold authorization of the home OCS to the visited OCS, and the online charging credit management of the roaming local service is performed by the visited OCS.
  • session creation, modification, and termination process processing for roaming local services can be easily implemented.
  • the visited OCS when the visited OCS receives the online charging session activation request (BP, create an IP-CAN credit control request message), the visited OCS first determines the request of the credit control request message. Whether the service belongs to the roaming local service, if yes, the threshold request is sent (can be redirected by proxy mode or redirect mode, generally as a proxy; the threshold request can be sent through the credit threshold request message) to the home OCS.
  • BP online charging session activation request
  • redirect mode generally as a proxy
  • the threshold request can be sent through the credit threshold request message
  • the home OCS After receiving the online charging session activation request, the home OCS also determines whether the service corresponding to the request is the legality of the roaming local service (or whether the user can authorize the roaming local service), if it is the roaming local service. (or a user who can authorize roaming local services), it is necessary to perform further threshold authorization processing, ie: send online charging session activation response (credit control response message) to the visited OCS, home OCS (according to the roaming agreement or signing Authorization) In the corresponding message, a credit threshold (for example, an account amount, or a time flow event, etc.) may be included in the corresponding OCS. Otherwise, the home OCS sends a response message to the visited OCS, rejecting the threshold request.
  • a credit threshold for example, an account amount, or a time flow event, etc.
  • the visited OCS sends an online charging session activation response (ie, a credit control response message) to the PCEF, where the online charging session activation response carries the credit line of the requested service.
  • the credit control request message received by the visited OCS and the service request information that may be carried in the credit request message forwarded to the home OCS may include: roaming the local service identifier or indicating the roaming local service identifier (the The two are only in different forms, and the roles are the same.
  • the authorization information that can carry the user in the credit request message may be an indication of the roaming local service authorization.
  • the home OCS can determine whether the user's roaming local service authority is determined according to the information to determine whether to grant the current user a credit threshold authorization.
  • the credit threshold assigned by the home OCS to the visited OCS may be a certain number of account amount thresholds, or traffic thresholds, or time thresholds, or event thresholds of the user, and further, the visited OCS may be based on the The threshold of the home OCS authorization performs operations such as credit management and account amount processing in the prior art.
  • the visited OCS will send the request message to the attribution again. OCS, re-requesting the credit threshold, the relevant processing flow is the same as the process of requesting the threshold for the first time.
  • FIG. 6 is a flowchart of creating an IP-CAN session when a UE roams according to a preferred embodiment of the present invention. As shown in FIG.
  • the process includes the following steps (step S602-step S630): Step S602, requesting IP establishment in the UE- During the CAN session, the gateway where the PCEF is located receives the IP-CAN session establishment request message, and carries the user identifier and the PDN identifier of the PDN network requesting access in the IP-CAN session establishment request message. Step S604: The PCEF sends an IP-CAN session establishment indication message to the V-PCRF, and carries the user identifier, the PDN identifier, and an IP address (IP Address) allocated for the UE in the IP-CAN session establishment indication message.
  • IP Address IP Address
  • Step S606 The V-PCRF determines, according to the user identifier, that the user is a roaming user. If the PCRF has not established an S9 session for the user, the V-PCRF sends a request message to the H-PCRF to establish an S9 session, and also requests to establish an S9 sub-session. The V-PCRF carries the user in the S9 sub-session. User's subscription information, PDN ID, and IP address.
  • the V-PCRF sends a request message to the H-PCRF to modify the S9 session, and also requests to establish an S9 sub-session.
  • the V-PCRF carries the user in the S9 sub-session. User's subscription information, PDN ID, and IP address.
  • the VPCRF supports the roaming local service function, and the RCS (roaming local service) function is set in the support feature carried in the CCR request message; if the function is not a mandatory function, the VPCRF needs to send a request to the HPCRF request in addition to the support feature capability negotiation.
  • the authorization of the roaming local service is not limited.
  • the CCR message carries the RLS request AVP to the HPCRF.
  • Step S610 the SPR returns the user subscription information (ie, the contracted document response) according to the user identifier and the PDN identifier.
  • the SPR will be provided to the H-PCRF.
  • the H-PCRF interacts with the SPR after the device is started to obtain the roaming local service subscription document.
  • Step S612 The H-PCRF determines, according to the request message of the VPCRF, the returned user subscription information, the network policy, the access information of the UE, and the like, to authorize the roaming local service, or formulate a delivery policy.
  • the response message is returned to the VPCRF, and the message may include an RLS authorization indication indicating that the support feature HPCRF supported by the function is provided to the VPCRF, and may exist. Details of the authorized carrier list and authorized business list.
  • Authorized VPCRFs can authorize independent policies and policy enforcement for roaming local services (such as user-level authorization). If the HPCRF does not support roaming local services, or supports but does not authorize the visited network to roam local services for the user, the HPCRF returns a corresponding support feature indication, and possibly an indication of whether RLS is allowed (eg, RLS report or reject, or directly The message is rejected and carries the relevant reject cause.
  • the HPCRF formulates the relevant policy.
  • the policy includes the PCC rule, the event trigger, and the like.
  • the message returned by the H-PCRF to the V-PCRF carries the formulated policy.
  • the V-PCRF stores the message returned by the HPCRF. According to the authorized roaming local service or PCC rules, the corresponding response message is returned to the PCEF.
  • the policy is developed for the HPCRF, it is issued as the existing technology process execution rules. If the HPCRF authorizes the V-PCRF to perform the roaming local service function, the VPCRF formulates the PCC rules for the service to be sent to the PCEF, and the corresponding QoS rules deliver the BBERFs, and the installation is performed.
  • Step S616 if it is online charging, the PCEF will activate the online charging session. Provide relevant input information to the visited OCS and the home OCS decision. Since it is a roaming local service, the PCEF sends a credit control request message to the visited OCS.
  • Step S618 The visited OCS determines that the service is a roaming local service, and needs to request the home OCS for the overall credit threshold of all or the service of the user.
  • Step S620 The OCS pre-transmission (in the proxy or redirect mode, generally the proxy), the request message is sent to the home OCS, where the message carries the roaming local service identifier or the indication information.
  • Step S622 the home OCS determines whether the authorization condition is met.
  • the service may be determined to be a roaming local service according to the roaming service indication or the identifier in the message, and whether the service can be authorized according to the roaming agreement or the contracted account information, and the response is sent.
  • the message was given to the visiting OCS. If the authorization condition is met, the entire credit threshold is authorized, and the response message is carried to the visited network VOCS, and the threshold may be an account amount, or a time flow event.
  • the home OCS authorizes the visited OCS credit threshold, and may also send an authorized credit management instruction to the visited OCS, where the authorized credit management knowledge is used to inform the visited OCS to perform online charging credit management, or
  • the home OCS only authorizes the credit threshold to the visited OCS, and implicitly informs the visited OCS to perform credit management for online charging.
  • the VOCS performs the credit authorization according to the service information of the PCEF credit request and the threshold of the attribution and delivery, and delivers the corresponding credit quota to the PCEF.
  • the specific technical processing is similar to the attribution of the prior art and the OCS and the home PCEF. Credit management process.
  • the PCEF installs and executes the policy. Such as PCC rules, event triggers, etc.
  • the gateway where the PCEF is located establishes an IP-CAN session to the return response, carrying the assigned IP address.
  • Step S628 in the business process, the credit line issued by the OCS to the PCEF is exhausted, and the service continues, the PCEF continues to send the credit control request message to the OCS to apply for the credit line, and reports the current usage amount in the request message.
  • Step S630 the visited OCS stores the current usage amount, and determines whether to authorize the PCEF new credit limit according to the total threshold of the attribution OCS authorization. Send a response message to the PCEF, carrying the newly authorized credit line.
  • the credit management interaction process between the PCEF and the visited V-OCS in the visited network in step S628 and step S630 can refer to the credit management of the home PCEF and the home OCS in the existing home network. If the total credit threshold of the home OCS authorized to the visited place arrives and the service needs to continue, the visited OCS will send the request message to the home OCS again, request the total credit threshold again, and carry the current actual usage amount to the home.
  • the local OCS; the related processing flow first requests the processing of the authorized total threshold with steps S620 and S622. Through the above process, the online charging function of the roaming local service can be performed.
  • FIG. 7 is a flowchart of terminating an IP-CAN session when a UE roams according to a preferred embodiment of the present invention. As shown in FIG. 7, the process includes the following steps (step S702-step S726): Step S702, PCEF The triggering needs to terminate the IP-CAN session.
  • the trigger may come from other network elements, the UE or the PCEF itself (for example, all PCC rules are deleted).
  • the PCEF sends an IP-CAN session termination indication message to the VPCRF; informs the VPCRF that the IP-CAN session is being deleted, and provides related information to the VPCRF.
  • Step S706 The PCC rule related to the roaming local service in the IP-CAN session is generated by the VPCRF, and the VPCRF identifies and deletes the rule and related information after receiving the session termination request.
  • Step S708 if there is a corresponding S9 session or a sub-callback in the IP-CAN session, the VPCRF will send
  • the S9 session modifies or terminates the request message to the HPCRF (ie, the forwarded termination request), notifying the HPCRF of the termination of the IP-CAN session. If the IP-CAN session is the last IP-CAN session under the APN, the S9 session is terminated, otherwise the S9 session is modified, and the sub-session corresponding to the IP-CAN session is terminated.
  • the HPCRF will identify and delete the IP-CAN related PCC rule lj, and delete the IP-CAN session related information, such as subscription information.
  • the PCEF deletes all PCC rules related to the IP-CAN.
  • the HPCRF sends a corresponding message of the S9 session modification or termination to the VPCRF.
  • Step S722 The visited OCS sends a credit termination report to the home OCS, where the message carries the remaining credit (and/or usage amount) corresponding to the credit threshold of the home OCS authorization, and informs the end of the credit.
  • Step S724 the home OCS stores the remaining credit, sends a response message to the visited OCS, and if yes, terminates the online charging session.
  • the PCEF may be triggered to initiate a credit request or send a final report request to the visited OCS; the specific PCEF and the visited OCS, and
  • the interaction process of the home OCS is the same as the credit management process in FIGS. 6 and 7.
  • the process related to billing related processing is the same, and no repeated description is made here.
  • the method for charging the roaming local service provided by the foregoing embodiment, by setting an interface between the visited OCS and the home OCS, enables the visited OCS to obtain the credit threshold of the home OCS, and performs roaming by the visited OCS.
  • FIG. 8 is a structural block diagram of a charging policy device of a roaming local service in a V-OCS according to an embodiment of the present invention.
  • the device is located in a visited online charging system (V-OCS), to implement the roaming provided by the foregoing embodiment.
  • the charging policy method of the local service as shown in FIG. 8, the device mainly includes: a receiving module 10, a determining module 20, an executing module 30, and a sending module 40.
  • the receiving module 10 is configured to receive the policy and the charging execution function.
  • a credit control request message sent by the body wherein the credit control request message is used to request the PCEF to use the current user's credit limit when performing the charging
  • the determining module 20 is connected to the receiving module 10, and is set to be based on the credit control
  • the request message determines whether the service requested by the current user is a roaming local service
  • the executing module 30 is connected to the determining module 20, and is configured to send a credit threshold request message to the home online charging system if the judgment result of the determining module is yes. (H-OCS), and receiving a credit threshold response message returned by the H-OCS, where the credit threshold response message carries a credit threshold that the home network can authorize the current user to use in the visited network;
  • the sending module 40 is connected to the execution module 30.
  • the credit threshold request message includes at least one of the following: the service related information related to the service requested by the current user, and the authorization information of the current user, where the service related information includes: the roaming local service identifier/indication; the authorization information Includes: Roaming local business authorization instructions.
  • the credit threshold comprises at least one of the following: an account amount threshold, a traffic threshold, a time threshold, and an event threshold.
  • the execution module sends the credit threshold request message to the H-OCS in one of the following ways: proxy mode, redirect mode.
  • FIG. 9 is a structural block diagram of a charging policy device located in a V-OCS roaming local service according to a preferred embodiment of the present invention.
  • the apparatus provided in the preferred embodiment further includes: a reporting module 50, connected to the sending The module 40 is configured to report to the H-OCS after the execution module sends the credit control response message to the PCEF to perform charging, and when the last roaming local service under the same access point name (APN) of the current user ends. A final report with usage and/or remaining usage of credit thresholds.
  • APN access point name
  • FIG. 10 is a structural block diagram of a charging policy device of a roaming local service in an H-OCS according to an embodiment of the present invention.
  • the device is located in a Home Online Charging System (H-OCS) to implement the roaming provided by the foregoing embodiment.
  • the charging policy method of the local service as shown in FIG. 10, the device includes: a receiving module 60 and a sending module 70.
  • the receiving module 60 is configured to receive a credit threshold request message from a visited online charging system (V-OCS), wherein the credit threshold request message is a V-OCS receiving a policy and charging execution function entity (PCEF) After the sent credit control request message is sent, according to the credit control request message, it is determined that the service requested by the current user is a roaming local service, where the credit control request message is used to request the PCEF to perform the charging of the current user.
  • V-OCS visited online charging system
  • PCEF policy and charging execution function entity
  • a sending module 70 configured to send, to the V-OCS, a credit threshold response message carrying a credit threshold that the home network authority can use in the visited network, where the credit threshold Can be used by the V-OCS and determine the credit limit, the credit line can be carried by the V-OCS in the credit control response message and sent to the PCEF for billing.
  • 11 is a structural block diagram of a charging policy device located in an H-OCS roaming local service according to a preferred embodiment of the present invention. As shown in FIG.
  • the device further includes: a first executing module 82, connected to the receiving module 60, and transmitting Between the modules 70, if the credit threshold request message includes the roaming local service identifier/indication, it is determined whether the service requested by the current user is a roaming local service according to the roaming local service identifier/indication, and if the roaming local service is roaming, The credit threshold is carried in the credit threshold response message and sent to the V-OCS.
  • the second execution module 84 is connected between the receiving module 60 and the sending module 70, and is set to be in the case that the credit threshold request message includes the roaming local service authorization indication.
  • the third execution module 86 the connection Between the receiving module 60 and the sending module 70, the request is set to cancel at the credit threshold.
  • the information includes the roaming local service identifier/indication and the roaming local service authorization indication, determining whether the service requested by the current user is a roaming local service according to the roaming local service identifier/indication, and determining whether the current user is based on the roaming local service authorization indication
  • the credit threshold is carried in the credit threshold response message and sent to the V-OCS.
  • the sending module 70 is further configured to carry the authorized credit management indication in the credit threshold response message to the V-OCS, wherein the authorized credit management indication is used to inform the V-OCS to perform credit management of the online charging. .
  • the charging policy device of the roaming local service provided by the foregoing embodiment is configured to enable the visited OCS to obtain the credit threshold of the home OCS by setting an interface between the visited OCS and the home OCS, so that the visited OCS performs the roaming local service.
  • the online charging method solves the problem that the online charging function of the roaming local service cannot be better realized in the related technology, and the session creation, modification and termination process of the roaming local service is easily realized. effect. From the above description, it can be seen that the present invention achieves the following technical effects:
  • the optimized PCC roaming access access architecture is adopted, and the visited OCS can be obtained by the interface between the visited OCS and the home OCS.
  • the credit threshold of the local OCS enables the OCS to perform online charging of the roaming local service, which solves the problem that the online charging function of the visited local network cannot be better realized in the related technology, thereby achieving easy roaming.
  • Industrial Applicability The technical solution provided by the present invention enables the visited OCS to obtain the credit threshold of the home OCS through the interface between the visited OCS and the home OCS, so that the visited OCS performs online charging of the roaming local service. In this way, it is easy to implement session creation, modification, and termination process processing for roaming local services.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device and, in some cases, may be executed in a different order than here.
  • the steps shown or described are either fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Abstract

本发明公开了一种漫游本地业务的计费策略方法及装置。其中，该方法包括：V-OCS接PCEF发送的信用控制请求消息，其中，信用控制请求消息用于请求PCEF执行计费时需要用到的当前用户的信用额度；V-OCS根据信用控制请求消息判断当前用户请求的业务是否为漫游本地业务，在判断结果为是的情况下，发送信用阈值请求消息给H-OCS,并接收H-OCS返回的信用阈值响应消息，其中，信用阈值响应消息中携带有归属网络授权当前用户能够在拜访网络中使用的信用阈值；V-OCS根据信用阈值确定信用额度，并将信用额度携带在信用控制响应消息中发送给PCEF执行计费。通过本发明，达到了容易实现漫游本地业务的会话创建、修改和终结流程处理的效果。

Description

漫游本地业务的计费策略方法及装置
技术领域 本发明涉及通信领域， 具体而言，涉及一种漫游本地业务的计费策略方法及装置。 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 （P-GW或者 PDN GW， Packet Data Network Gateway) 归属用户服务器 (HSS， Home Subscriber Server) 3GPP 的认证授权计费 （AAA, Authentication Authorization and Accounting) 服务器， 策略和计费规则功能实体 （PCRF， Policy and Charging Rules Function ) 及其他支撑节点组成。 图 1是根据相关技术的 EPS系统架构的示意图， 其中-
HSS, 是用户签约数据的永久存放地点， 位于用户签约的归属网。 MME, 是用户签约数据在当前网络的存放地点， 负责终端到网络的非接入层信令 管理、 终端的安全验证功能、 终端的移动性管理、 用户空闲模式下的跟踪和寻呼管理 功能和承载管理。
S-GW, 是核心网到无线系统的网关， 负责终端到核心网的用户面承载、终端空闲 模式下的数据缓存、 网络侧发起业务请求的功能、 合法监听和分组数据路由和转发功 能； 服务网关负责统计用户终端使用无线网的情况， 并产生终端使用无线网的话单， 传送给计费网关。
P-GW,是演进系统和该系统外部分组数据网络的网关，它连接到因特网和分组数 据网络上， 负责终端的互联网协议 （IP， Internet Protocol) 地址分配、 计费功能、 分 组包过滤、 策略控制等功能。
PDN, 是运营商的 IP业务网络， 该网络通过运营商的核心网为用户提供 IP服务。 此外， 策略控制和计费控制功能 （PCC， Policy and Charging Control) 嵌入 EPS 架构中， EPS架构中 PCC各功能实体可分布如下： PCRF是策略和计费规则功能实体， 策略和计费执行功能实体 （PCEF， Policy and Charging Enforcement Function) 存在于 P-GW中， 承载绑定和事件报告功能实体 （BBERF, Bearer Binding and Event Report Function)可存在于 S-GW中， 业务的应用功能实体（AF， Application Function)存在 于运营商的 IP业务网络， 用户签约数据库 （SPR， Subscription Profile Repository) 可 与 HSS合一。 在 3GPP中， 通过接入点名称 （APN， Access Point Name) 可以找到对应 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。 PCC适用于所有 3GPP IP-CAN, 其架构如图 2所示 （图 2是 根据相关技术的 PCC非漫游组成结构示意图）， PCRF主要负责策略和计费规则的制 定， 通过 Gx接口将制定的 PCC策略和计费规则下发给 PCEF， PCEF安装、执行 PCC 策略， 并上报相关事件， 与计费系统交互计费信息。
PCRF通过 Gxx接口将业务服务质量（ QoS， Quality of Service )规则下发给 BBERF， BBERF不和计费系统交互计费信息， 只负责承载绑定和相关事件的上报。 AF通过 Rx 接口向 PCRF提供业务信息， SPR保存了用户签约的业务信息， PCRF可以通过 Sp接 口向 SPR查询用户签约的业务信息。 PCEF通过 Gy接口将在线计费信息发送给在线 计费系统（OCS， Online Charging System)负责在线计费的统计， 通过 Gz接口将离线 计费信息发送给离线计费系统 （OFCS， Offline Charging System) 0 目前， 在 PCC架构中， PCRF可以动态地下发 PCC策略给 PCEF， 策略信息中包 含 QoS和计费的信息。 PCRF根据 AF提供的业务相关信息、 PCEF上报的承载相关信 息以及 SPR中用户签约的业务信息， 制定 PCC策略。
AF， 用于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。 在业务面进行参数协商时， AF将相关业务信息传递给 PCRF。 如果这些 业务信息与 PCRF的策略相一致， 则 PCRF接受该协商； 否则， PCRF拒绝该协商， 并在反馈时给出 PCRF可接受的业务参数。 随后， AF可将这些参数返回给用户设备 (UE， User Equipment )0 其中， AF和 PCRF之间的接口是 R 接口。
PCRF是 PCC的核心， 用于负责策略决策和计费规则的制定。 PCRF提供基于业 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检测、 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 PCEF执行； 同时， PCRF还需要保证这些规 则和用户的签约信息一致。其中， PCRF制定策略和计费规则的依据包括： 从 AF获得 的与业务相关的信息、从 SPR获得的与策略控制和计费相关的用户策略计费控制签约 信息、 以及通过 Gx接口从 PCEF获得的与承载相关网络的信息。
PCEF通常位于网关（GW， Gate-Way) 内， 在承载面执行 PCRF所制定的策略和 计费规则。 PCEF按照 PCRF所发送的规则中的业务数据流过滤器对业务数据流进行检 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发送的规则进行资源分配， 并根据 AF提供的信息进行门控控制； 同时， PCEF根据 PCRF订阅的事件触发上报承载网络上发生的事件;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， 计费既可以是在线计费， 也可以是离 线计费。如果是在线计费，则 PCEF需要和在线计费系统（OCS， Online Charging System) 一起进行信用管理； 离线计费时， PCEF 和离线计费系统 （OFCS， Offline Charging System)之间交换相关的计费信息。其中， PCEF与 PCRF之间的接口是 Gx接口， PCEF 与 OCS之间的接口是 Gy接口， PCEF与 OFCS之间的接口是 Gz接口。 PCEF也可增 强具有业务检测功能 （TDF， Traffic Detection Function)。 PCEF可以根据本地配置或 是 PCRF下发的包含应用检测控制策略 （ADC， Application Detection and Control) 的 ADC规则进行应用检测并进行策略执行（如门控、重定向和带宽限制）。 PCEF—般都 位于网络的网关上， 如 EPS 的分组数据网络网关 （PDN-GW)、 通用无线分组业务 (GPRS, General Packet Radio Service) 中的 GPRS网关支持节点 （GGSN) 以及互联 无线网局域网（I-WLAN, Interworking WLAN)中的分组数据网关（PDG， Packet Data Gateway) 等。
TDF也可以独立部署， 此时 TDF与 PCRF通过 Sd接口， TDF可以根据预配置或 PCRF下发的应用检测控制规则进行应用检测和策略执行。 PCRF为 TDF提供应用检 测控制规则或激活 TDF预配置规则， 独立 TDF功能的策略控制执行操作包括门控、 重定向和带宽限制。 TDF向 PCRF作被检测业务 /流的相关事件和信息的上报 （例如， 向 PCRF报告检测到的业务 /流的开始和终结）， 以及给 PCRF发送业务数据流描述， 传送来自 PCRF的用于流检测的业务检测和策略规则的信令。 承载绑定和事件报告功能实体 （BBERF , Bearer Binding and Event Reporting Function) 通常位于接入网网关 （Access Network Gateway) 内。 如当用户设备通过 E-UTRAN接入 EPS、 服务网关 S-GW与 P-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， S-GW中就存在 BBERF。 当用户设备通过可信任非 3GPP 接入网接入时， 可信任非 3GPP 接入网关中也存在 BBERF。 SPR，存储有与策略控制和计费相关的用户策略计费控制签约信息。 SPR和 PCRF 之间的接口是 Sp接口。
OCS和 PCEF共同完成在线计费方式下用户信用的控制和管理。
OFCS与 PCEF共同完成离线计费方式下的计费操作。 以上 PCC 架构通过各功能实体实现了对 UE 为访问一个分组数据网络 （PDN，
Packet Data Network)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。 现有技术中， 当用户漫游到拜访地时， 存在两种方式， 一种是归属地路由接入 (home routed access), 一种是本地疏导接入（local breakout access), 本地疏导接入场 景如图 3 (图 3是根据相关技术的 PCC漫游拜访地接入架构示意图） 所示， PCEF位 于拜访网络， 拜访网络和归属网络的信息交互通过拜访网络 PCRF (V-PCRF) 和归属 网络 PCRF (H-PCRF) 之间的漫游接口 S9接口传送。 当用户在拜访地网络接入时， VPCRF通过 S9接口请求建立 S9会话 /子会话， HPCRF制定 PCC策略， 下发 PCC规 则给 VPCRF， 前传给 PCEF/BBERF等执行。 目前， 移动通信的个性化业务需求增多， 不同运营商的业务类型存在较大差异， 同时用户漫游时归属网络业务在漫游地使用的资费偏高， 这两个原因导致用户漫游到 拜访网络需要能够支持在访问归属地网络业务的同时， 可以通过其在归属网络签约的 终端和 ID信息访问拜访网络的本地业务 （称为漫游本地业务）， 这样不仅可以最大程 度地增强用户体验和降低资费， 同时也能为用户提供其归属运营商网络所不具备的拜 访地网络的特色业务。 因为漫游本地业务归属于拜访地网络， 相对于归属网络的签约是独立的， 因此， 对于用户访问漫游本地业务功能的相关策略和资源授权， 需要由拜访地网络 VPCRF 决策。 而该用户属于归属地网络， 其资费账户在归属地网络 OCS。 由于漫游本地业务 归属于拜访地网络， 对于归属网络签约独立 （归属地网络不一定具有该类业务， 或具 有的该类业务但其标识两地网络也不一致）， 因此该类业务信息归属地网络 OCS无法 识别， 无法对漫游本地业务进行在线计费的信用授权等处理。 现有技术中， 用户漫游到拜访地网络后， 只能由归属地 OCS执行在线计费功能， 可通过拜访地网元（例如 proxy OCS)接口到归属地 OCS， 或者可通过拜访地 VPCRF 前传信用请求到归属地 HPCRF, 前传到 OCS执行。 但现有技术的这些方法都只能针 对归属地签约业务， 归属地 PCRF或 OCS能获取到归属地的业务和资费签约信息。而 对于漫游本地业务， 归属网络很可能没有相关业务的签约， 因此无法通过现有技术的 多种方案来实现对漫游本地业务的在线计费功能。 另外， 现有技术给出的解决漫游本地业务的一种方案是， 漫游用户到拜访网络签 约和开漫游资费账户， 该资费签约账户存放在拜访网络的 OCS (即 V-OCS)。 拜访网 络 OCS (即 V-OCS)根据该拜访网络签约可以直接对漫游用户进行账户信用和余额管 理， 实施信用控制， 而不向归属网络 OCS (即 H-OCS)请求信用控制。 但该技术方案 存在的问题是， 用户需要在漫游地重新缴纳费用， 原先归属地账户里的大量余额无法 使用。 且用户离开该漫游地网络后， 还需要结算该漫游地费用， 否则将滞留在该漫游 地临时账户中成为呆账额度。 因此给用户的漫游本地业务的使用带来了很多等同于漫 游本地新开户的处理， 严重损害了漫游本地业务力求给用户更便利丰富和优质的业务 体验的原则， 并未能实质性解决漫游本地业务的在线计费问题。 针对相关技术中无法更好地实现拜访地网络开展漫游本地业务的在线计费功能的 问题， 目前尚未提出有效的解决方案。 发明内容 本发明提供了一种漫游本地业务的计费策略方法及装置， 以至少解决上述问题。 根据本发明的一个方面， 提供了一种漫游本地业务的计费策略方法， 包括： 拜访 地在线计费系统 （V-OCS)接收策略和计费执行功能实体（PCEF)发送的信用控制请 求消息 （Credit Control Request), 其中， 信用控制请求消息用于请求 PCEF执行计费 时需要用到的当前用户的信用额度； V-OCS根据信用控制请求消息判断当前用户请求 的业务是否为漫游本地业务， 在判断结果为是的情况下， 发送信用阈值请求消息给归 属地在线计费系统 （H-OCS), 并接收 H-OCS返回的信用阈值响应消息， 其中， 信用 阈值响应消息中携带有归属网络授权当前用户能够在拜访网络中使用的信用阈值； V-OCS根据信用阈值确定信用额度， 并将信用额度携带在信用控制响应消息中发送给 PCEF执行计费。 优选地， 信用阈值请求消息包括以下至少之一： 与当前用户请求的业务相关的业 务相关信息、 当前用户的授权信息， 其中， 业务相关信息包括： 漫游本地业务标识 / 指示； 授权信息包括： 漫游本地业务授权指示。 优选地， 在 V-OCS将信用阈值请求消息发送给归属地在线计费系统（H-OCS)之 后， 包括： 在信用阈值请求消息包括漫游本地业务标识 /指示的情况下， H-OCS根据漫 游本地业务标识 /指示， 判断当前用户请求的业务是否为漫游本地业务， 如果是漫游本 地业务， 则将信用阈值携带在信用阈值响应消息中发送给 V-OCS; 在信用阈值请求消 息包括漫游本地业务授权指示的情况下， H-OCS根据漫游本地业务授权指示， 判断当 前用户是否为漫游本地业务授权用户， 如果是漫游本地业务授权用户， 则将信用阈值 携带在信用阈值响应消息中发送给 V-OCS; 在信用阈值请求消息包括漫游本地业务标 识 /指示和漫游本地业务授权指示的情况下， H-OCS 根据漫游本地业务标识 /指示， 判 断当前用户请求的业务是否为漫游本地业务， 并根据漫游本地业务授权指示， 判断当 前用户是否为漫游本地业务授权用户，在得到的两个判断结果均为是的情况下， H-OCS 将信用阈值携带在信用阈值响应消息中发送给 V-OCS。 优选地， 信用阈值包括以下至少之一： 账户金额阈值、 流量阈值、 时间阈值、 事 件阈值。 优选地， V-OCS通过以下方式之一将信用阈值请求消息发送给 H-OCS:代理方式、 重定向方式。 优选地， 当信用阈值满足预定的停止条件时， V-OCS再次向 H-OCS请求新的信 用阈值。 优选地， 在 V-OCS将信用控制响应消息发送给 PCEF执行计费之后， 该方法还包 括：当当前用户的同一个接入点名称 (APN)下的最后一个漫游本地业务结束时， V-OCS 向 H-OCS上报携带有信用阈值的使用用量和 /或剩余用量的终结报告。 优选地，在 H-OCS将信用阈值携带在信用阈值响应消息中发送给 V-OCS的同时， 还包括： H-OCS将授权信用管理指示携带在信用阈值响应消息中发送给 V-OCS, 其 中， 授权信用管理指示用于告知 V-OCS执行在线计费的信用管理。 根据本发明的另一个方面， 提供了一种漫游本地业务的计费策略装置， 位于拜访 地在线计费系统 （V-OCS ), 包括： 接收模块， 设置为接收策略和计费执行功能实体 (PCEF)发送的信用控制请求消息， 其中， 信用控制请求消息用于请求 PCEF执行计 费时需要用到的当前用户的信用额度； 判断模块， 设置为根据信用控制请求消息判断 当前用户请求的业务是否为漫游本地业务； 执行模块， 设置为在判断模块的判断结果 为是的情况下， 发送信用阈值请求消息给归属地在线计费系统 （H-OCS ) , 并接收 H-OCS返回的信用阈值响应消息， 其中， 信用阈值响应消息中携带有归属网络授权当 前用户能够在拜访网络中使用的信用阈值； 发送模块， 设置为根据信用阈值确定信用 额度， 并将信用额度携带在信用控制响应消息中发送给 PCEF执行计费。 优选地， 信用阈值请求消息包括以下至少之一： 与当前用户请求的业务相关的业 务相关信息、 当前用户的授权信息， 其中， 业务相关信息包括： 漫游本地业务标识 / 指示； 授权信息包括： 漫游本地业务授权指示。 优选地， 信用阈值包括以下至少之一： 账户金额阈值、 流量阈值、 时间阈值、 事 件阈值。 优选地， 执行模块通过以下方式之一将信用阈值请求消息发送给 H-OCS: 代理方 式、 重定向方式。 优选地， 当信用阈值满足预定的停止条件时，执行模块再次向 H-OCS请求新的信 用阈值。 优选地， 该装置还包括： 上报模块， 设置为在执行模块将信用控制响应消息发送 给 PCEF执行计费之后， 且当当前用户的同一个接入点名称 （APN) 下的最后一个漫 游本地业务结束时， 向 H-OCS上报携带有信用阈值的使用用量和 /或剩余用量的终结 报告。 根据本发明的又一个方面， 提供了一种漫游本地业务的计费策略装置， 位于归属 地在线计费系统 （H-OCS ), 包括： 接收模块， 设置为接收来自拜访地在线计费系统 (V-OCS) 的信用阈值请求消息， 其中， 信用阈值请求消息是 V-OCS在接收到策略和 计费执行功能实体（PCEF)发送的信用控制请求消息后， 根据信用控制请求消息判定 当前用户请求的业务为漫游本地业务的情况下发送的， 其中， 信用控制请求消息用于 请求 PCEF执行计费时需要用到的当前用户的信用额度； 发送模块， 设置为向 V-OCS 发送携带有归属网络授权当前用户能够在拜访网络中使用的信用阈值的信用阈值响应 消息， 其中， 信用阈值能够被 V-OCS使用并确定出信用额度， 信用额度能够被 V-OCS 携带在信用控制响应消息中发送给 PCEF执行计费。 优选地， 该装置还包括： 第一执行模块， 设置为在信用阈值请求消息包括漫游本 地业务标识 /指示的情况下，根据漫游本地业务标识 /指示，判断当前用户请求的业务是 否为漫游本地业务， 如果是漫游本地业务， 指示发送模块将信用阈值携带在信用阈值 响应消息中发送给 V-OCS; 第二执行模块， 设置为在信用阈值请求消息包括漫游本地 业务授权指示的情况下， 根据漫游本地业务授权指示， 判断当前用户是否为漫游本地 业务授权用户， 如果是漫游本地业务授权用户， 指示发送模块将信用阈值携带在信用 阈值响应消息中发送给 V-OCS; 以及第三执行模块， 设置为在信用阈值请求消息包括 漫游本地业务标识 /指示和漫游本地业务授权指示的情况下， 根据漫游本地业务标识 / 指示，判断当前用户请求的业务是否为漫游本地业务，并根据漫游本地业务授权指示， 判断当前用户是否为漫游本地业务授权用户，在得到的两个判断结果均为是的情况下， 指示发送模块将信用阈值携带在信用阈值响应消息中发送给 V-OCS。 优选地， 发送模块还设置为将授权信用管理指示携带在信用阈值响应消息中发送 给 V-OCS, 其中， 授权信用管理指示用于告知 V-OCS执行在线计费的信用管理。 通过本发明，采用在拜访地 OCS与归属地 OCS之间的交互使拜访地 OCS能够获 得归属地 OCS的信用阈值， 由拜访地 OCS执行信用管理的方式， 解决了相关技术中 无法更好地实现拜访地网络开展漫游本地业务的在线计费功能的问题， 进而达到了容 易实现漫游本地业务的会话创建、 修改和终结流程处理的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中- 图 1是根据相关技术的 EPS系统架构的示意图； 图 2是根据相关技术的 PCC非漫游组成结构示意图； 图 3是根据相关技术的 PCC漫游拜访地接入架构示意图； 图 4是根据本发明实施例的漫游本地业务的计费策略方法流程图； 图 5是根据本发明实施例的 PCC漫游拜访地接入架构示意图； 图 6是根据本发明优选实施例的 UE漫游时 IP-CAN会话的创建流程图； 图 7是根据本发明优选实施例的 UE漫游时 IP-CAN会话的终结流程图； 图 8是根据本发明实施例的位于 V-OCS的漫游本地业务的计费策略装置的结构框 图； 图 9是根据本发明优选实施例的位于 V-OCS漫游本地业务的计费策略装置的结构 框图； 图 10是根据本发明实施例的位于 H-OCS的漫游本地业务的计费策略装置的结构 框图； 以及 图 11是根据本发明优选实施例的位于 H-OCS漫游本地业务的计费策略装置的结 构框图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 情况下， 本申请中的实施例及实施例中的特征可以相互组合。 图 4是根据本发明实施例的漫游本地业务的计费策略方法流程图， 如图 4所示， 该方法主要包括以下步骤 （步骤 S402-步骤 S406): 步骤 S402，拜访地在线计费系统（V-OCS)接收策略和计费执行功能实体（PCEF) 发送的信用控制请求消息 （Credit Control Request), 其中， 信用控制请求消息用于请 求 PCEF执行计费时需要用到的当前用户的信用额度。 步骤 S404， V-OCS根据信用控制请求消息判断当前用户请求的业务是否为漫游本 地业务， 在判断结果为是的情况下， 发送信用阈值请求消息给归属地在线计费系统 (H-OCS), 并接收 H-OCS返回的信用阈值响应消息， 其中， 信用阈值响应消息中携 带有归属网络授权当前用户能够在拜访网络中使用的信用阈值。 步骤 S406， V-OCS根据信用阈值确定信用额度， 并将信用额度携带在信用控制响 应消息中发送给 PCEF执行计费。 在本发明实施例中， 信用阈值请求消息包括以下至少之一： 与当前用户请求的业 务相关的业务相关信息、 当前用户的授权信息， 其中， 业务相关信息包括： 漫游本地 业务标识 /指示； 授权信息包括： 漫游本地业务授权指示。 在本发明实施例中， 在 V-OCS 将信用阈值请求消息发送给归属地在线计费系统
(H-OCS) 之后， 包括： 在信用阈值请求消息包括漫游本地业务标识 /指示的情况下， H-OCS根据漫游本地业务标识 /指示， 判断当前用户请求的业务是否为漫游本地业务， 如果是漫游本地业务， 则将信用阈值携带在信用阈值响应消息中发送给 V-OCS; 在信 用阈值请求消息包括漫游本地业务授权指示的情况下， H-OCS根据漫游本地业务授权 指示， 判断当前用户是否为漫游本地业务授权用户， 如果是漫游本地业务授权用户， 则将信用阈值携带在信用阈值响应消息中发送给 V-OCS; 在信用阈值请求消息包括漫 游本地业务标识 /指示和漫游本地业务授权指示的情况下， H-OCS根据漫游本地业务标 识 /指示， 判断当前用户请求的业务是否为漫游本地业务， 并根据漫游本地业务授权指 示， 判断当前用户是否为漫游本地业务授权用户， 在得到的两个判断结果均为是的情 况下， H-OCS将信用阈值携带在信用阈值响应消息中发送给 V-OCS。 在本发明实施例中， 信用阈值包括以下至少之一： 账户金额阈值、 流量阈值、 时 间阈值、 事件阈值。 优选地， V-OCS通过以下方式之一将信用阈值请求消息发送给 H-OCS:代理方式、 重定向方式。 优选地， 当信用阈值满足预定的停止条件时， V-OCS再次向 H-OCS请求新的信 用阈值。 在本发明实施例中， 在 V-OCS将信用控制响应消息发送给 PCEF执行计费之后， 该方法还包括： 当当前用户的同一个接入点名称 （APN) 下的最后一个漫游本地业务 结束时， V-OCS向 H-OCS上报携带有信用阈值的使用用量和 /或剩余用量的终结报告。 优选地，在 H-OCS将信用阈值携带在信用阈值响应消息中发送给 V-OCS的同时， H-OCS还可以将授权信用管理指示携带在信用阈值响应消息中发送给 V-OCS, 其中， 授权信用管理指示用于告知 V-OCS执行在线计费的信用管理。 请参考图 5， 图 5是根据本发明实施例的 PCC漫游拜访地接入架构示意图， 在实 际应用中， 本实施例提供的漫游本地业务的计费策略方法完全可以通过图 5 所示的 PCC漫游拜访地接入架构来实现。在 PCC漫游拜访地接入架构中，拜访网络能够实现 对漫游用户执行漫游本地业务的在线计费功能， 使得用户漫游到拜访网络时可以使用 在线计费的漫游本地业务。与图 3所示的 PCC漫游拜访地接入架构相比， 在图 5所示 的 PCC漫游拜访地接入架构中， 拜访地 PCEF和拜访地 OCS通过 Gy接口交互， 拜访 地 OCS和归属地 OCS新增接口（例如 diameter协议），实现归属地 OCS对拜访地 OCS 的信用阈值授权， 由拜访地 OCS执行漫游本地业务的在线计费信用管理。根据图 5所 示的架构， 能够轻松实现漫游本地业务的会话创建、 修改和终结流程处理。 具体而言， 在漫游拜访地接入场景下， 当拜访地 OCS收到在线计费会话激活请求 ( BP, 创建 IP-CAN的信用控制请求消息）， 拜访地 OCS首先判断信用控制请求消息 所请求的业务是否属于漫游本地业务， 如果是的话， 则将阈值请求发送 （可以通过代 理方式 proxy或重定向方式 redirect, —般为 proxy; 阈值请求可以通过信用阈值请求 消息发送） 到归属地 OCS。 在接收到该在线计费会话激活请求后，归属地 OCS也会对该请求对应的业务是否 为漫游本地业务 （或该用户是否可授权漫游本地业务） 的合法性进行判断， 如果是漫 游本地业务 （或可授权漫游本地业务的用户）， 才有必要进行进一步的阈值授权处理， 即： 发送在线计费会话激活响应 （信用控制响应消息） 给拜访地 OCS， 归属地 OCS (根据漫游协议或签约授权）在该相应消息中包含信用阈值（例如， 可以为账户金额， 或时间流量事件等用量） 给拜访地 OCS。 否则， 归属地 OCS发送响应消息给拜访地 OCS, 拒绝该阈值请求。 而后， 拜访地 OCS将在线计费会话激活响应（即信用控制响 应消息） 发送给 PCEF， 其中， 在线计费会话激活响应携带有该请求业务的信用额度。 在实际应用中， 拜访地 OCS收到的信用控制请求消息以及转发给归属地 OCS的 信用请求消息中可以携带与该请求的业务相关信息可以包括： 漫游本地业务标识或指 示漫游本地业务标识（该二者仅是形式不同， 所起的作用是相同的）， 或信用请求消息 中可以携带该用户的授权信息可以为漫游本地业务授权指示。进而， 归属地 OCS可根 据该信息判断用户的漫游本地业务权限来决策是否给予当前用户一个信用阈值授权。 在实际应用中， 归属地 OCS分配给拜访地 OCS的信用阈值可以为该用户的一定 数目的账户金额阈值、 或流量阈值， 或时间阈值， 或事件阈值等， 进一步地， 拜访地 OCS可根据该归属地 OCS授权的阈值进行执行现有技术中的信用管理和账户金额处 理等操作。 另外， 在业务过程中， 当拜访地 OCS的信用阈值到达时 （也即账户金额、 流量， 或时间用完的状态， 或事件结束的状态）， 则拜访地 OCS会再次发送请求消息给归属 地 OCS， 重新请求信用阈值， 相关处理流程同首次请求下发阈值的流程是相同的。 而且， 当该用户的同一 APN下的最后一个漫游本地业务结束， 拜访地 OCS将发 送在线计费会话终结消息给归属地 OCS， 上报拜访地的使用用量（金额， 流量， 时间， 或事件等） 和 /或剩余用量给归属地 OCS。 下面结合图 6、 图 7以及优选实施例对上述实施例提供的漫游本地业务的计费策 略方法进行更进一步的描述， 以便更好的理解本发明的实施例。 图 6是根据本发明优选实施例的 UE漫游时 IP-CAN会话的创建流程图， 如图 6 所示， 该流程包括以下步骤 （步骤 S602-步骤 S630): 步骤 S602， 在 UE 请求建立 IP-CAN会话的过程中， PCEF 位于的网关接收到 IP-CAN会话建立请求消息，并在该 IP-CAN会话建立请求消息中携带用户标识和请求 接入的 PDN网络的 PDN标识。 步骤 S604， PCEF向 V-PCRF发送 IP-CAN会话建立指示消息，并在该 IP-CAN会 话建立指示消息中携带用户标识、 PDN标识以及为 UE分配的 IP地址 （IP Address)。
UE接入拜访网络时， 拜访网络提供归属地漫游方案和漫游本地业务方案， UE选 择了漫游本地业务方案；则 PCEF在消息中将 UE的漫游本地方案指示传送给 VPCRF。 步骤 S606， V-PCRF根据用户标识判断该用户为漫游用户。 若 PCRF还未为该用 户建立 S9会话， 则 V-PCRF向 H-PCRF发送请求消息， 以建立 S9会话， 同时还请求 建立一个 S9子会话， V-PCRF在 S9子会话中携带用户还没有该用户的签约信息， PDN 标识以及 IP地址等。 若 PCRF已为该用户建立了 S9会话， 则 V-PCRF向 H-PCRF发 送请求消息， 以修改 S9会话， 同时还请求建立一个 S9子会话， V-PCRF在 S9子会话 中携带用户还没有该用户的签约信息， PDN标识以及 IP地址等。
VPCRF支持漫游本地业务功能，则该 CCR请求消息中携带的 support feature中设 置 RLS (roaming local service) 功能； 若该功能不是必选功能， 则除了 support feature 能力协商外 VPCRF需要发送请求给 HPCRF请求该 roaming local service的授权； 具 体请求方式不做限定， 例如在该 CCR消息中携带 RLS request AVP给 HPCRF等。 步骤 S608， H-PCRF根据用户标识判断还没有该用户的签约数据， H-PCRF向 SPR 发送签约文档请求， 并在该签约文档请求中携带用户标识和 PDN标识。 步骤 S610， SPR根据用户标识和 PDN标识返回用户签约信息 （即， 签约文档应 答）。 此时若归属地 SPR还未向 H-PCRF提供过漫游本地业务签约文档，那么此时 SPR 将向 H-PCRF提供。 或者 H-PCRF在设备启动后就与 SPR交互以便获取漫游本地业务签约文档。 步骤 S612， H-PCRF根据 VPCRF的请求消息， 以及返回的用户签约信息、 网络 策略、 UE的接入信息等判断授权漫游本地业务， 或是制定下发策略。 若 HPCRF根据签约信息和漫游协议等信息， 授权拜访地的漫游本地业务功能， 则返回响应消息给 VPCRF,消息中可能包含表示该功能支持的 support feature HPCRF 给 VPCRF的 RLS授权指示、以及可能会存在的授权运营商 list和授权业务 list等详细 信息。 授权 VPCRF可对漫游本地业务独立资源授权和策略制定 （比如用户级授权）。 若 HPCRF不支持漫游本地业务， 或支持但不授权拜访网络对该用户的漫游本地 业务，则 HPCRF返回相应的 support feature指示， 以及可能存在的是否允许 RLS的指 示 （例如 RLS report或 reject, 或者直接拒绝该消息， 携带相关 reject cause); 若需要 则 HPCRF制定相关策略， 策略中包括 PCC规则、 事件触发器等， H-PCRF向 V-PCRF 返回的消息中携带制定的策略。 步骤 S614， V-PCRF存储 HPCRF返回的消息。 根据授权漫游本地业务或是 PCC 规则， 向 PCEF返回相应的响应消息。若为 HPCRF制定的策略则如现有技术流程执行 规则下发。 若为 HPCRF授权 V-PCRF执行漫游本地业务功能， 则 VPCRF制定该业务 相关 PCC规则下发给 PCEF， 相应的 QoS规则下发各 BBERF, 安装执行。 步骤 S616， 如果是在线计费则 PCEF将激活在线计费会话。 提供相关的输入信息 给拜访地 OCS和归属地 OCS决策。 由于是漫游本地业务， 则 PCEF发送信用控制请 求消息给拜访地 OCS。 步骤 S618， 拜访地 OCS判断该业务为漫游本地业务， 则需要向归属地 OCS请求 该用户的全部或该类业务的整体信用阈值。 步骤 S620， 拜访地 OCS前传 （采用 proxy或 redirect方式， 一般为 proxy) 该请 求消息到归属地 OCS， 该消息中携带漫游本地业务标识或指示信息。 步骤 S622， 归属地 OCS判断是否满足授权条件 （例如， 可根据消息中的漫游业 务指示或标识判断该业务为漫游本地业务， 根据漫游协议或签约账户信息判断是否可 以授权该类业务）， 发送响应消息给拜访地 OCS。 若满足授权条件则授权整个信用阈 值， 在响应消息中携带给拜访地网络 VOCS， 该阈值可以为账户金额， 或时间流量事 件等用量。 在实际应用中， 归属地 OCS授权拜访地 OCS信用阈值的同时， 还可以发 送给拜访地 OCS的授权信用管理指示， 该授权信用管理知识用于告知拜访地 OCS执 行在线计费的信用管理， 或者归属地 OCS只授权信用阈值给拜访地 OCS， 隐式告知 拜访地 OCS执行在线计费的信用管理。 步骤 S624， VOCS根据 PCEF信用请求的业务信息和归属地授权和下发的阈值， 执行信用授权， 下发相应信用配额给 PCEF， 具体技术处理类似于现有技术的归属地 和 OCS和归属地 PCEF的信用管理流程。 步骤 S626， PCEF安装并执行策略。 如 PCC规则、 事件触发器等。 PCEF所在网 关向返回应答建立 IP-CAN会话， 携带分配的 IP地址。 步骤 S628， 业务过程中， 拜访地 OCS下发给 PCEF的信用额度用尽， 而业务继 续， 则 PCEF继续发送信用控制请求消息给拜访地 OCS申请信用额度， 并在请求消息 中上报当前的使用用量。 步骤 S630，拜访地 OCS存储当前的使用用量，并根据归属地 OCS授权的总阈值， 判断是否授权 PCEF新的信用额度。 给 PCEF发送响应消息， 携带新授权的信用额度。 步骤 S628和步骤 S630的拜访网络内 PCEF和拜访地 V-OCS的信用管理交互流程， 可借鉴现有归属网络中归属地 PCEF和归属地 OCS的信用管理。 其中， 若归属地 OCS授权给拜访地的总信用阈值到达且业务需要继续， 则拜访地 OCS会再次发送请求消息给归属地 OCS， 重新请求信用总阈值， 并携带上当前的实际 使用用量给归属地 OCS;相关处理流程同步骤 S620和步骤 S622首次请求授权总阈值 的处理。 经过上述流程， 可执行漫游本地业务的在线计费功能。 当会话结束时 （粒度可为 每个 IP-CAN会话或者该 APN下的最后一个 IP-CAN会话，具体根据运营商策略决定）， 归属地 OCS授权给拜访地 OCS的阈值剩余用量 （和 /或当前使用用量）将需要报告给 归属地 OCS， PCEF将会发送信用终结报告给拜访地 OCS发起信用会话终结， 具体流 程描述如图 7所示。 请参考图 7，图 7是根据本发明优选实施例的 UE漫游时 IP-CAN会话的终结流程 图， 如图 7所示， 该流程包括以下步骤 （步骤 S702-步骤 S726): 步骤 S702， PCEF检测到触发需要终结 IP-CAN会话， 该触发可能来自其他网元， UE或是 PCEF自身 （例如 PCC规则全部删除）。 步骤 S704， PCEF向 VPCRF发送 IP-CAN会话终结指示消息； 告知 VPCRF该 IP-CAN会话正在被删除， 并提供相关信息给 VPCRF。 步骤 S706， 该 IP-CAN会话中的漫游本地业务相关的 PCC规则由 VPCRF生成， 收到该会话终结请求后 VPCRF将识别并删除该类规则及其相关信息。 步骤 S708， 若该 IP-CAN会话存在对应的 S9会话或子回话， 则 VPCRF将发送
S9会话修改或终结请求消息给 HPCRF (即前转的终结请求），通知 HPCRF该 IP-CAN 会话的终结。 若该 IP-CAN会话为该 APN下的最后一个 IP-CAN会话， 则终结 S9会 话， 否则修改 S9会话， 终结该 IP-CAN会话对应的子会话。 步骤 S710， HPCRF将识别并删除该 IP-CAN相关的 PCC规贝 lj，并删除该 IP-CAN 会话相关的信息， 例如签约信息等。 步骤 S712， PCEF删除该 IP-CAN相关的所有 PCC规则。 步骤 S714， HPCRF发送 S9会话修改或终结的相应消息给 VPCRF。 步骤 S716， VPCRF发送 IP-CAN会话终结响应消息给 PCEF， 告知该 IP-CAN会 话的终结处理。 该消息为步骤 S704的响应消息。 步骤 S718， 对于在线计费的漫游本地业务， PCEF给拜访地 OCS发送终结报告， 并携带剩余信用 （和 /或当前使用用量） 给拜访地 OCS。 步骤 S720， 拜访地 OCS判断出该业务为漫游本地业务， 将需要向归属地 OCS报 告归属地 OCS授权的信用阈值对应的剩余信用 （和 /或使用用量）。 步骤 S722，拜访地 OCS发送信用终结报告给归属地 OCS，消息中携带归属地 OCS 授权的信用阈值对应的剩余信用 （和 /或使用用量）， 并告知该信用的终结。 步骤 S724， 归属地 OCS存储该剩余信用， 发送响应消息给拜访地 OCS; 如果存 在则终结在线计费会话。 步骤 S726，拜访地 OCS发送信用终结响应消息给 PCEF，并终结该在线计费会话。 此外， 在业务进行过程中， 当 IP-CAN会话修改发生， 若涉及到计费信息变更， 则可能触发 PCEF将向拜访地 OCS发起信用请求或发送终结报告请求； 具体 PCEF和 拜访地 OCS， 及归属地 OCS的交互处理流程同图 6和图 7中的信用管理流程。 涉及 计费相关处理流程相同， 这里不做重复描述。 采用上述实施例提供的漫游本地业务的计费策略方法，通过在拜访地 OCS与归属 地 OCS之间设置一个接口使拜访地 OCS能够获得归属地 OCS的信用阈值的方式， 由 拜访地 OCS执行漫游本地业务的在线计费信用管理，解决了相关技术中无法更好地实 现拜访地网络开展漫游本地业务的在线计费功能的问题， 进而达到了容易实现漫游本 地业务的会话创建、 修改和终结流程处理的效果。 图 8是根据本发明实施例的位于 V-OCS的漫游本地业务的计费策略装置的结构框 图， 该装置位于拜访地在线计费系统（V-OCS), 用以实现上述实施例提供的漫游本地 业务的计费策略方法， 如图 8所示， 该装置主要包括： 接收模块 10、 判断模块 20、 执 行模块 30以及发送模块 40。 其中， 接收模块 10， 设置为接收策略和计费执行功能实 体（PCEF)发送的信用控制请求消息， 其中， 信用控制请求消息用于请求 PCEF执行 计费时需要用到的当前用户的信用额度； 判断模块 20， 连接至接收模块 10， 设置为根 据信用控制请求消息判断当前用户请求的业务是否为漫游本地业务； 执行模块 30， 连 接至判断模块 20， 设置为在判断模块的判断结果为是的情况下， 发送信用阈值请求消 息给归属地在线计费系统（H-OCS), 并接收 H-OCS返回的信用阈值响应消息， 其中， 信用阈值响应消息中携带有归属网络授权当前用户能够在拜访网络中使用的信用阈 值； 发送模块 40， 连接至执行模块 30， 设置为根据信用阈值确定信用额度， 并将信用 额度携带在信用控制响应消息中发送给 PCEF执行计费。 在本实施例中， 信用阈值请求消息包括以下至少之一： 与当前用户请求的业务相 关的业务相关信息、 当前用户的授权信息， 其中， 业务相关信息包括： 漫游本地业务 标识 /指示； 授权信息包括： 漫游本地业务授权指示。 优选地， 信用阈值包括以下至少之一： 账户金额阈值、 流量阈值、 时间阈值、 事 件阈值。 优选地， 执行模块通过以下方式之一将信用阈值请求消息发送给 H-OCS: 代理方 式、 重定向方式。 在本实施例中， 当信用阈值满足预定的停止条件时，执行模块再次向 H-OCS请求 新的信用阈值。 图 9是根据本发明优选实施例的位于 V-OCS漫游本地业务的计费策略装置的结构 框图， 如图 9所示， 该优选实施例中提供的装置还包括： 上报模块 50， 连接至发送模 块 40， 设置为在执行模块将信用控制响应消息发送给 PCEF执行计费之后， 且当当前 用户的同一个接入点名称（APN)下的最后一个漫游本地业务结束时， 向 H-OCS上报 携带有信用阈值的使用用量和 /或剩余用量的终结报告。 图 10是根据本发明实施例的位于 H-OCS的漫游本地业务的计费策略装置的结构 框图， 该装置位于归属地在线计费系统（H-OCS), 用以实现上述实施例提供的漫游本 地业务的计费策略方法， 如图 10所示， 该装置包括： 接收模块 60和发送模块 70。 其 中， 接收模块 60， 设置为接收来自拜访地在线计费系统 （V-OCS) 的信用阈值请求消 息， 其中， 信用阈值请求消息是 V-OCS在接收到策略和计费执行功能实体 （PCEF) 发送的信用控制请求消息后， 根据信用控制请求消息判定当前用户请求的业务为漫游 本地业务的情况下发送的， 其中， 信用控制请求消息用于请求 PCEF执行计费时需要 用到的当前用户的信用额度； 发送模块 70， 设置为向 V-OCS发送携带有归属网络授 权当前用户能够在拜访网络中使用的信用阈值的信用阈值响应消息， 其中， 信用阈值 能够被 V-OCS使用并确定出信用额度， 信用额度能够被 V-OCS携带在信用控制响应 消息中发送给 PCEF执行计费。 图 11是根据本发明优选实施例的位于 H-OCS漫游本地业务的计费策略装置的结 构框图， 如图 11所示， 该装置还包括： 第一执行模块 82， 连接于接收模块 60和发送 模块 70之间， 设置为在信用阈值请求消息包括漫游本地业务标识 /指示的情况下， 根 据漫游本地业务标识 /指示， 判断当前用户请求的业务是否为漫游本地业务， 如果是漫 游本地业务，将信用阈值携带在信用阈值响应消息中发送给 V-OCS;第二执行模块 84， 连接于接收模块 60和发送模块 70之间， 设置为在信用阈值请求消息包括漫游本地业 务授权指示的情况下， 根据漫游本地业务授权指示， 判断当前用户是否为漫游本地业 务授权用户， 如果是漫游本地业务授权用户， 将信用阈值携带在信用阈值响应消息中 发送给 V-OCS; 以及第三执行模块 86， 连接于接收模块 60和发送模块 70之间， 设置 为在信用阈值请求消息包括漫游本地业务标识 /指示和漫游本地业务授权指示的情况 下， 根据漫游本地业务标识 /指示， 判断当前用户请求的业务是否为漫游本地业务， 并 根据漫游本地业务授权指示， 判断当前用户是否为漫游本地业务授权用户， 在得到的 两个判断结果均为是的情况下，将信用阈值携带在信用阈值响应消息中发送给 V-OCS。 在该优选实施例中，发送模块 70还设置为将授权信用管理指示携带在信用阈值响 应消息中发送给 V-OCS,其中，授权信用管理指示用于告知 V-OCS执行在线计费的信 用管理。 采用上述实施例提供的漫游本地业务的计费策略装置，通过在拜访地 OCS与归属 地 OCS之间设置一个接口使拜访地 OCS能够获得归属地 OCS的信用阈值，使拜访地 OCS执行漫游本地业务的在线计费的方式， 解决了相关技术中无法更好地实现拜访地 网络开展漫游本地业务的在线计费功能的问题， 进而达到了容易实现漫游本地业务的 会话创建、 修改和终结流程处理的效果。 从以上的描述中， 可以看出， 本发明实现了如下技术效果： 采用优化后的 PCC漫 游拜访地接入的架构，通过拜访地 OCS与归属地 OCS之间的接口使拜访地 OCS能够 获得归属地 OCS的信用阈值， 使拜访地 OCS执行漫游本地业务的在线计费， 解决了 相关技术中无法更好地实现拜访地网络开展漫游本地业务的在线计费功能的问题， 进 而达到了容易实现漫游本地业务的会话创建、 修改和终结流程处理的效果。 工业实用性 本发明提供的技术方案， 可以通过拜访地 OCS与归属地 OCS之间的接口使拜访 地 OCS能够获得归属地 OCS的信用阈值，使拜访地 OCS执行漫游本地业务的在线计 费。 以这种方式， 容易实现漫游本地业务的会话创建、 修改和终结流程处理。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而可以将 它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处的 顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 或者将它 们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任何 特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的 任何修改、 等同替换、 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. 一种漫游本地业务的计费策略方法， 包括：
拜访地在线计费系统 V-OCS接收策略和计费执行功能实体 PCEF发送的信 用控制请求消息， 其中， 所述信用控制请求消息用于请求所述 PCEF执行计费 时需要用到的当前用户的信用额度；
所述 V-OCS 根据所述信用控制请求消息判断所述当前用户请求的业务是 否为漫游本地业务， 在判断结果为是的情况下， 发送信用阈值请求消息给归属 地在线计费系统 H-OCS, 并接收所述 H-OCS返回的信用阈值响应消息， 其中， 所述信用阈值响应消息中携带有归属网络授权所述当前用户能够在拜访网络中 使用的信用阈值；
所述 V-OCS根据所述信用阈值确定所述信用额度，并将所述信用额度携带 在信用控制响应消息中发送给所述 PCEF执行计费。
2. 根据权利要求 1所述的方法，其中，所述信用阈值请求消息包括以下至少之一: 与所述当前用户请求的业务相关的业务相关信息、 所述当前用户的授权信息， 其中，
所述业务相关信息包括： 漫游本地业务标识 /指示；
所述授权信息包括： 漫游本地业务授权指示。
3. 根据权利要求 2所述的方法，其中， 在所述 V-OCS将所述信用阈值请求消息发 送给归属地在线计费系统 H-OCS之后， 包括：
在所述信用阈值请求消息包括所述漫游本地业务标识 /指示的情况下，所述 H-OCS 根据所述漫游本地业务标识 /指示， 判断所述当前用户请求的业务是否 为所述漫游本地业务， 如果是所述漫游本地业务， 则将所述信用阈值携带在所 述信用阈值响应消息中发送给所述 V-OCS；
在所述信用阈值请求消息包括所述漫游本地业务授权指示的情况下， 所述
H-OCS根据所述漫游本地业务授权指示，判断所述当前用户是否为漫游本地业 务授权用户， 如果是所述漫游本地业务授权用户， 则将所述信用阈值携带在所 述信用阈值响应消息中发送给所述 V-OCS；
在所述信用阈值请求消息包括所述漫游本地业务标识 /指示和所述漫游本 地业务授权指示的情况下， 所述 H-OCS根据所述漫游本地业务标识 /指示， 判 断所述当前用户请求的业务是否为所述漫游本地业务， 并根据所述漫游本地业 务授权指示， 判断所述当前用户是否为漫游本地业务授权用户， 在得到的两个 判断结果均为是的情况下，所述 H-OCS将所述信用阈值携带在所述信用阈值响 应消息中发送给所述 V-OCS。
4. 根据权利要求 1所述的方法， 其中， 所述信用阈值包括以下至少之一：
账户金额阈值、 流量阈值、 时间阈值、 事件阈值。
5. 根据权利要求 1至 4中任一项所述的方法，其中， 所述 V-OCS通过以下方式之 一将所述信用阈值请求消息发送给所述 H-OCS: 代理方式、 重定向方式。
6. 根据权利要求 5所述的方法， 其中， 当所述信用阈值满足预定的停止条件时， 所述 V-OCS再次向所述 H-OCS请求新的信用阈值。
7. 根据权利要求 5所述的方法，其中， 在所述 V-OCS将所述信用控制响应消息发 送给所述 PCEF执行计费之后， 所述方法还包括：
当所述当前用户的同一个接入点名称 APN 下的最后一个所述漫游本地业 务结束时， 所述 V-OCS向所述 H-OCS上报携带有所述信用阈值的使用用量和 / 或剩余用量的终结报告。
8. 根据权利要求 3所述的方法，其中，在所述 H-OCS将所述信用阈值携带在所述 信用阈值响应消息中发送给所述 V-OCS的同时， 还包括：
所述 H-OCS 将授权信用管理指示携带在所述信用阈值响应消息中发送给 所述 V-OCS, 其中， 所述授权信用管理指示用于告知所述 V-OCS执行在线计 费的信用管理。
9. 一种漫游本地业务的计费策略装置， 位于拜访地在线计费系统 V-OCS, 包括： 接收模块， 设置为接收策略和计费执行功能实体 PCEF发送的信用控制请 求消息， 其中， 所述信用控制请求消息用于请求所述 PCEF执行计费时需要用 到的当前用户的信用额度；
判断模块， 设置为根据所述信用控制请求消息判断所述当前用户请求的业 务是否为漫游本地业务；
执行模块， 设置为在所述判断模块的判断结果为是的情况下， 发送信用阈 值请求消息给归属地在线计费系统 H-OCS, 并接收所述 H-OCS返回的信用阈 值响应消息， 其中， 所述信用阈值响应消息中携带有归属网络授权所述当前用 户能够在拜访网络中使用的信用阈值；
发送模块， 设置为根据所述信用阈值确定所述信用额度， 并将所述信用额 度携带在信用控制响应消息中发送给所述 PCEF执行计费。
10. 根据权利要求 9所述的装置，其中，所述信用阈值请求消息包括以下至少之一: 与所述当前用户请求的业务相关的业务相关信息、 所述当前用户的授权信息， 其中，
所述业务相关信息包括： 漫游本地业务标识 /指示；
所述授权信息包括： 漫游本地业务授权指示。
11. 根据权利要求 9所述的装置， 其中， 所述信用阈值包括以下至少之一：
账户金额阈值、 流量阈值、 时间阈值、 事件阈值。
12. 根据权利要求 9至 11中任一项所述的装置，其中，所述执行模块通过以下方式 之一将所述信用阈值请求消息发送给所述 H-OCS: 代理方式、 重定向方式。
13. 根据权利要求 12所述的装置， 其中， 当所述信用阈值满足预定的停止条件时， 所述执行模块再次向所述 H-OCS请求新的信用阈值。
14. 根据权利要求 12所述的装置， 其中， 所述装置还包括：
上报模块， 设置为在所述执行模块将所述信用控制响应消息发送给所述 PCEF执行计费之后， 且当所述当前用户的同一个接入点名称 APN下的最后一 个所述漫游本地业务结束时，向所述 H-OCS上报携带有所述信用阈值的使用用 量和 /或剩余用量的终结报告。
15. 一种漫游本地业务的计费策略装置， 位于归属地在线计费系统 H-OCS, 包括： 接收模块，设置为接收来自拜访地在线计费系统 V-OCS的信用阈值请求消 息，其中，所述信用阈值请求消息是所述 V-OCS在接收到策略和计费执行功能 实体 PCEF发送的信用控制请求消息后， 根据所述信用控制请求消息判定当前 用户请求的业务为漫游本地业务的情况下发送的， 其中， 所述信用控制请求消 息用于请求所述 PCEF执行计费时需要用到的所述当前用户的信用额度；
发送模块，设置为向所述 V-OCS发送携带有归属网络授权所述当前用户能 够在拜访网络中使用的信用阈值的信用阈值响应消息， 其中， 所述信用阈值能 够被所述 V-OCS使用并确定出所述信用额度，所述信用额度能够被所述 V-OCS 携带在信用控制响应消息中发送给所述 PCEF执行计费。
16. 根据权利要求 15所述的装置， 其中， 所述装置还包括： 第一执行模块， 设置为在所述信用阈值请求消息包括所述漫游本地业务标 识 /指示的情况下， 根据所述漫游本地业务标识 /指示， 判断所述当前用户请求 的业务是否为所述漫游本地业务， 如果是所述漫游本地业务， 指示所述发送模 块将所述信用阈值携带在所述信用阈值响应消息中发送给所述 V-OCS;
第二执行模块， 设置为在所述信用阈值请求消息包括所述漫游本地业务授 权指示的情况下， 根据所述漫游本地业务授权指示， 判断所述当前用户是否为 漫游本地业务授权用户， 如果是所述漫游本地业务授权用户， 指示所述发送模 块将所述信用阈值携带在所述信用阈值响应消息中发送给所述 V-OCS; 以及 第三执行模块， 设置为在所述信用阈值请求消息包括所述漫游本地业务标 识 /指示和所述漫游本地业务授权指示的情况下， 根据所述漫游本地业务标识 / 指示， 判断所述当前用户请求的业务是否为所述漫游本地业务， 并根据所述漫 游本地业务授权指示， 判断所述当前用户是否为漫游本地业务授权用户， 在得 到的两个判断结果均为是的情况下， 指示所述发送模块将所述信用阈值携带在 所述信用阈值响应消息中发送给所述 V-OCS。
17. 根据权利要求 16所述的装置，其中，所述发送模块还设置为将授权信用管理指 示携带在所述信用阈值响应消息中发送给所述 V-OCS, 其中， 所述授权信用管 理指示用于告知所述 V-OCS执行在线计费的信用管理。
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