WO2014107985A1 - 漫游本地业务的在线计费方法、h-ocs及v-ocs - Google Patents

漫游本地业务的在线计费方法、h-ocs及v-ocs Download PDF

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Publication number
WO2014107985A1
WO2014107985A1 PCT/CN2013/086040 CN2013086040W WO2014107985A1 WO 2014107985 A1 WO2014107985 A1 WO 2014107985A1 CN 2013086040 W CN2013086040 W CN 2013086040W WO 2014107985 A1 WO2014107985 A1 WO 2014107985A1
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Prior art keywords
pcrf
ocs
session
credit
interface
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PCT/CN2013/086040
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English (en)
French (fr)
Inventor
吴锦花
周晓云
Original Assignee
中兴通讯股份有限公司
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Publication of WO2014107985A1 publication Critical patent/WO2014107985A1/zh

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Classifications

    • 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
    • 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
    • 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
    • H04M15/64—On-line charging system [OCS]
    • 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
    • H04M15/66—Policy and charging system

Definitions

  • the present invention relates to a policy and a charging control technology in a wireless communication system, and in particular, to an online charging method for a roaming local service, a home online charging system (H-OCS), a home location policy, and a charging rule function (H- PCRF) device, visited online charging system (V-OCS) and visited local policy and charging rule function (V-PCRF) device.
  • H-OCS home online charging system
  • H- PCRF charging rule function
  • V-OCS visited online charging system
  • V-PCRF visited local policy and charging rule function
  • EPS 3rd Generation Partnership Project
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • P-GW or PDN GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • GPP GPP
  • AAA 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.
  • the S-GW is the gateway of the core network to the wireless system, and 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 GW 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.
  • the P-GW is the gateway of the evolved system and the external packet data network of the system. It is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (IP) of the terminal. Address allocation, billing functions, packet filtering, and policy control.
  • IP Internet Protocol
  • the PDN is the operator's IP service network, which provides IP services to users through the carrier's core network.
  • the Policy and Charging Control is embedded in the EPS architecture.
  • the PCC functional entities in the EPS architecture can be distributed as follows:
  • the PCRF is a policy and charging rule function entity, and the policy and charging execution function (PCEF, The Policy and Charging Enforcement Function exists in the P-GW.
  • the Bearer Binding and Event Report Function (BBERF) entity can exist in the S-GW.
  • the application function of the service AF, Application Function
  • the entity exists in the operator's IP service network, and the SPR (Spread Profile Repository) can be set in one with the HSS.
  • the corresponding PDN can be found by the access point name (APN, Access Point Name).
  • a connection from a User Equipment (UE) to a PDN is usually referred to as an IP-Connected Network (IP-Access) network session.
  • IP-Access IP-Connected Network
  • the PCC is applicable to all 3GPP IP-CANs.
  • the architecture is shown in Figure 2.
  • the PCRF is responsible for the formulation of the policy and accounting rules.
  • the PCC policy and accounting rules are sent to the PCEF through the Gx interface.
  • PCEF installs and executes the PCC. Policy, and report related events, and exchange billing information with the billing system.
  • the PCRF sends the QoS (Quality of Service) rules 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.
  • OCS is responsible for the online charging statistics.
  • the PCEF sends the offline charging information to the offline charging system through the Gz interface (OFCS, Offline). Charging System ).
  • 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 based on 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 is used to provide access points for business applications, and the network resources used by these business applications require dynamic policy control.
  • the AF passes the related service information to the PCRF. If the service information is consistent with the policy of the PCRF, the PCRF accepts the negotiation; If the service information is inconsistent with the PCRF policy, 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 UE.
  • the interface between the AF and the PCRF is an Rx interface.
  • 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 traffic data flows, including traffic data flow detection, Gating Control, QoS control, and data flow based charging rules.
  • the PCRF sends its policy and charging rules to the PCEF for execution. At the same time, the PCRF also needs to ensure that these rules are consistent with the user's subscription 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 fee can be either online or offline.
  • the PCEF In the case of online charging, the PCEF needs to perform credit management with the OCS; when offline charging, the relevant charging information is exchanged between the PCEF and the OFCS.
  • 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.
  • PCEF can also be enhanced with TDF (Traffic Detection Function).
  • the PCEF can perform application detection and perform policy execution (for example, gating, redirection, and bandwidth limitation) according to the local configuration or the ADC rule that is sent by the PCRF and includes the Application Detection and Control (ADC) policy.
  • ADC Application Detection and Control
  • PCEFs are generally located on the gateway of the network, such as PDNGW of EPS, Gateway GPRS Support Node (GGSN) in General Packet Radio Service (GPRS), and Interconnected Wireless LAN (I-WLAN). , Packet Data Gateway (PDG) in Interworking Wireless Local Area Network.
  • the TDF can also be deployed independently.
  • the interface between the TDF and the PCRF is the Sd interface.
  • the TDF can perform application detection and policy execution according to the pre-configured or ADC rules delivered by the PCRF.
  • the PCRF provides ADC rules or activates TDF pre-configuration rules for TDF, and the policy control operations for independent TDF include gating, redirection, and bandwidth throttling.
  • 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 BBERF is usually located in the Access Network Gateway.
  • the S-GW, and the P-GW through the E-UTRAN to use the Proxy Mobile Internet Protocol version 6 ( ⁇ , Proxy Mobile Internet Protocol version 6) there is a BBERF in the S-GW.
  • BBERF also exists in the trusted non-3GPP access gateway.
  • 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 policy charging control for the IP-CAN session established by the UE to access a PDN through each functional entity.
  • the PCEF when a user roams to a visited place, there are two access modes, one is home routed access, and the other is local breakout access (LBO access).
  • LBO access local breakout access
  • the PCEF is located on the visited network, and the information of the visited network and the home network is exchanged through the visited PCRF (Visit PCRF, V-PCRF).
  • the roaming interface S9 interface between the home PCRF Home PCRF, H-PCRF
  • the V-PCRF requests to establish an S9 session/sub-session through the S9 interface.
  • the H-PCRF formulates a PCC policy, issues a PCC rule to the V-PCRF, and forwards it to the PCEF/BBERF.
  • the roaming local service belongs to the visited network, the subscription to the home network is independent. Therefore, the V-PCRF decision of the visited network is required for the related policies and resource authorization of the user to access the roaming local service function.
  • the subscriber belongs to the home network, and its tariff account is at the ocs of the home network.
  • the home network 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 network of the two networks is also inconsistent), and therefore the attribution of the service information is The OCS of the network cannot be identified, and the credit authorization for online charging of the roaming local service cannot be handled.
  • the online charging function can be performed only by the home OCS (Home OCS, H-OCS), and the user can connect to the local network element (for example, proxy OCS). H-OCS, or can forward the credit request to the H-PCRF through the V-PCRF, and then pass to the H-OCS for execution.
  • these methods of the related art can only be used for the home registration service, and the H-PCRF or H-OCS can only obtain the service and tariff subscription information of the home location.
  • the home network is likely to have no subscription for related services. Therefore, the online charging function for roaming local services cannot be implemented through multiple schemes of related technologies.
  • one solution for solving the roaming local service is that the roaming user goes to the visited network contracting and the roaming tariff account, and the tariff signing account is stored in the OCS of the visited network (ie, the visited OCS (Visited OCS, V-) OCS )).
  • the OCS (ie, V-OCS) visiting the network 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 OCS (ie, H-OCS) of the home network.
  • 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 roaming fee is also required to be settled. If the roaming fee is not settled, the roaming fee will remain in the roaming temporary account and become a bad debt amount. Therefore, the use of roaming local services for users brings a lot of processing equivalent to roaming local new accounts, which seriously damages the roaming local business and strives to provide users with more convenient and high-quality business.
  • the principle of verification does not substantially solve the online charging problem of roaming local services. Summary of the invention
  • An embodiment of the present invention provides an online charging method for roaming local services, a ⁇ -0 CS, an H-PCRF device, a V-OCS, and a V-PCRF device, to solve how to better implement a roaming local service in a visited network.
  • the problem of online billing is a problem of online billing.
  • An embodiment of the present invention provides an online charging method for a roaming local service, which is applied to a roaming visited access scenario, and the method includes:
  • the home online charging system H-OCS sends a credit threshold to the home policy and charging rule function H-PCRF through the Sy interface;
  • the visited online charging system V-OCS receives the credit threshold from the V-PCRF; and the V-OCS sends an online charging session activation response carrying the relevant credit to the policy and charging enforcement function PCEF, or triggers The PCEF initiates a re-authentication process.
  • the method further includes:
  • the H-OCS receives a Sy interface request message, where the Sy interface request message carries a roaming local service identifier or indication;
  • the H-OCS determines the roaming local service authority of the user according to the Sy interface request message, and determines whether the credit threshold is sent.
  • the V-OCS receives the credit threshold from the V-PCRF, including: the V-OCS receiving the credit threshold from the V-PCRF through a Sy interface; or
  • the credit threshold is a predetermined number of account amounts, flows, times, or events.
  • the method further includes:
  • the V-OCS triggers a re-authentication request to acquire a new from the V-PCRF a credit threshold, or triggering a Sy interface session modification to obtain a new credit threshold from the V-PCRF; the V-PCRF requesting the H-PCRF pre-transmission threshold through the S9 session modification procedure;
  • the H-PCRF requests the new credit threshold from the H-OCS through the Sy interface.
  • the method further includes:
  • the V-PCRF sends a session termination request to the V-OCS
  • the session termination request or the credit termination report includes usage and/or remaining usage of the credit threshold.
  • the method further includes:
  • the H-PCRF reports the usage amount and/or remaining amount of the credit threshold to the H-OCS through the Sy interface.
  • the embodiment of the present invention further provides a home online charging system H-OCS, including: a receiving determining module, configured to: receive a Sy interface request message, where the Sy interface request message carries a roaming local service identifier or indication Determining the roaming local service authority of the user according to the Sy interface request message, and determining the sending credit threshold;
  • H-OCS home online charging system
  • a sending module configured to: send the credit threshold to the home policy and charging rule function H-PCRF through the Sy interface.
  • the receiving determining module is further configured to: receive a session termination request reported by the H-PCRF through the Sy interface, terminate the Sy session, and delete related information;
  • the sending module is further configured to: return a session termination response to the H-PCRF.
  • the receiving determining module is further configured to: receive a session modification request sent by the H-PCRF by using the Sy interface, where the session modification request carries an actual usage amount of the current credit threshold;
  • the sending module is further configured to: return a session modification response to the H-PCRF, where The session modification response carries a new credit threshold or a rejection request.
  • the embodiment of the invention further provides a home location policy and a charging rule function H-PCRF device, including:
  • a receiving module configured to: receive a credit threshold sent by the home online charging system H-OCS through the Sy interface;
  • a sending module configured to: send the credit threshold to the visited local policy and charging rule function V-PCRF by creating or modifying a response message through the S9 session.
  • the sending module is further configured to send a Sy interface request message to the H-OCS, where the Sy interface request message carries a roaming local service identifier or indication.
  • the sending module is further configured to: send a session termination request to the H-OCS;
  • the receiving module is further configured to: receive a session termination response returned by the H-OCS.
  • the embodiment of the present invention further provides a visited online charging system V-OCS, including: a receiving module, configured to: receive a credit threshold from a visited local policy and a charging rule function V-PCRF;
  • a processing module configured to: send an online charging session activation response carrying the relevant credit to the policy and charging execution function PCEF, or trigger the PCEF to initiate a re-authentication process.
  • the receiving module is configured to receive a credit threshold from the V-PCRF in the following manner: receiving, by the Sy interface, the credit threshold from the V-PCRF; or, by using the PCEF, from the V- The PCRF receives the credit threshold.
  • the receiving module is further configured to: receive a session termination request sent by the V-PCRF;
  • the processing module is further configured to: return a session termination response to the V-PCRF.
  • the receiving module is further configured to: receive a credit termination report sent by the PCEF; the processing module is further configured to: return a credit termination response to the PCEF.
  • the embodiment of the present invention further provides a V-PCRF device for a visitor policy and a charging rule function, including: a receiving module, configured to: receive a home policy and a charging rule function, the credit threshold sent by the H-PCRF to create or modify the response message through the S9 session;
  • a sending module configured to: send the credit threshold to the visited online charging system V-OCS.
  • the sending module is configured to send the credit threshold to the V-OCS in the following manner: sending the credit threshold to the V-OCS through a Sy interface or a policy and charging enforcement function PCEF.
  • the sending module is further configured to: send a session termination request to the V-OCS;
  • the receiving module is further configured to: receive a session termination response returned by the V-OCS.
  • the roaming local service of the online charging can be used.
  • FIG. 1 is a schematic structural view of a conventional EPS system
  • FIG. 2 is a schematic diagram of a PCC non-roaming composition structure according to the related art
  • FIG. 3-1 is a schematic structural diagram of PCC roaming access according to the related art
  • 3-2 is a schematic structural diagram of a PCC roaming visit access according to an embodiment of the present invention.
  • FIG. 4 is a signaling flowchart of creating an IP-CAN session when a UE roams according to Embodiment 1 of the present invention
  • FIG. 5 is a signaling flowchart of terminating an IP-CAN session when a UE roams according to Embodiment 1 of the present invention
  • FIG. 7 is a schematic structural diagram of an H-OCS according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an H-PCRF according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a V-OCS according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a V-PCRF according to an embodiment of the present invention.
  • FIG. 3-2 is a schematic structural diagram of a PCC roaming visit access according to an embodiment of the present invention, and a schematic diagram 3-1, H-OCS and H of a related PCC roaming visited access structure.
  • the PCRF exchanges the H-OCS authorized credit value to the H-PCRF through the Sy interface, and the H-PCRF transmits the V-PCRF through the S9 interface.
  • the V-PCRF can transmit the credit threshold through the Sy interface.
  • Real-time credit management is performed by V-OCS for V-OCS, or for transfer to V-OCS via PCEF.
  • the embodiment of the present invention provides an online charging method for a roaming local service, which is applied to a roaming visited access scenario, and the method includes:
  • the H-OCS sends a credit threshold to the H-PCRF through the Sy interface;
  • the V-OCS receives the credit threshold from the V-PCRF
  • the V-OCS sends an online charging session activation response carrying the relevant credit to the PCEF, or triggers the PCEF to initiate a re-authentication procedure.
  • H-OCS and HOCS H-PCRF and HPCRF
  • V-OCS and VOCS V-PCRF and VPCRF mentioned in this paper are all the same concept.
  • FIG. 4 is a signaling flowchart of creating an IP-CAN session when a UE roams according to Embodiment 1 of the present invention.
  • a VPCRF receives a session creation request of a PCEF, and sends an S9 session creation or modification request. The message is sent to the HPCRF. Because it is a roaming local service, the HPCRF sends a Sy session creation/modification message (initial/intermediate roaming) if it decides to authorize the VPCRF to roam the local service right while requesting the authorized VPCRF to roam the local service. Local report request) to HOCS.
  • the HOCS authorizes the credit threshold according to the roaming local service indication or identifier in the message according to the roaming agreement or the subscription (the credit threshold granularity may be the user or the session or the service level, It can be sent to the HPCRF in the Sy Session Creation/Modification Response message for account amount, time, traffic, or event usage.
  • the HPCRF sends the credit threshold to the VPCRF through the S9 Session Create/Modify Response message.
  • the VPCRF sends a Sy Session Creation/Modification message (initial/intermediate roaming local report request) to the VOCS, which carries the credit threshold.
  • the VOCS performs credit management and account amount processing based on the credit threshold authorized by the HOCS.
  • the PCEF sends an online charging session activation request message to the VOCS, carrying a special charging key and/or a roaming local service identifier or indication; the VOCS sends an online charging session activation response (ie, creating a credit response) to the PCEF , carry relevant credit information.
  • an online charging session activation response ie, creating a credit response
  • Step S401 in the process that the UE requests to establish an IP-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 requesting access in the IP-CAN session establishment request message. PDN identifier.
  • Step S402 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
  • the visited network When the UE accesses the visited network, the visited network provides the home roaming scheme and the roaming local service scheme. If the UE selects the roaming local service scheme, the PCEF transmits the UE's roaming local service scheme indication to the V-PCRF in the message.
  • Step S403 The V-PCRF determines that the user is a roaming user according to the user identifier. If the H-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 subscriber's subscription information, PDN identifier, and IP address in the S9 sub-session. If the H-PCRF has established an S9 session for the user, 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, and the V-PCRF carries the user in the S9 sub-session. Contract information, PDN logo, and IP address.
  • the V-PCRF supports the Roaming Local Service (RLS) function
  • the RLS function is set in the support feature carried in the CCR request message (or if the RLS function is mandatory for the version, If the RLS function is not mandatory, the V-PCRF optionally sends an RLS request to the H-PCRF to request authorization of the RLS function. ; please The method is not limited.
  • the RCR request AVP is carried in the CCR message to the H-PCRF.
  • Step S404 The H-PCRF determines that there is no subscription data of the user according to the user identifier, and the H-PCRF sends a subscription document request to the SPR, and carries the user identifier and the PDN identifier in the subscription document request.
  • the SPR returns the user subscription information (ie, the subscription document response) according to the user identifier and the PDN identifier. If the home SPR has not provided the roaming local service subscription document to the H-PCRF, the SPR will provide the HPR to the H-PCRF.
  • H-PCRF interacts with the SPR after the device is started to obtain the roaming local service subscription document.
  • Step S405 If the local service is roaming, if the H-PCRF determines to authorize the V-PCRF to roam the local service right while authorizing the roaming local service, the H-PCRF activates the Sy. Session, sending a Sy session creation/modification message (initial/intermediate roaming local report request) to the H-OCS, carrying service related information (eg, roaming local service identity or indication), or carrying authorization information of the user (eg, roaming local) Business authorization instructions).
  • service related information eg, roaming local service identity or indication
  • authorization information of the user eg, roaming local
  • Step S406 The H-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 the roaming agreement or the contracted account information may be used to determine whether the service can be authorized.
  • the threshold (the credit threshold granularity can be the user or session or service level, which can be used for the account amount, time, traffic, or event) for the user to visit the network; H-OCS sends the Sy session creation/modification response message ( The initial/intermediate roaming local report response is sent to the home H-PCRF, and the message carries the credit threshold.
  • Step S407 The H-PCRF determines the authorized roaming local service according to the V-PCRF request message, the returned user subscription information, the network policy, and the UE access information, or formulates a delivery policy.
  • the response message is returned to the V-PCRF, and the message may include a support feature indicating that the function is supported, and the H-PCRF is sent to the V-PCRF. Details of the RLS authorization indication, and the list of authorized operators (list) and authorized service lists that may exist.
  • Authorized V-PCRF can authorize independent resources and policy formulation for roaming local services (eg, user-level authorization); for online charging, The message carries the overall credit threshold of the H-OCS authorization;
  • the H-PCRF If the H-PCRF does not support the roaming local service, or supports but does not authorize the visited network to roam the local service for the user, the H-PCRF returns a corresponding support feature indication, and an indication of whether or not the RLS may be allowed (eg, RLS support) Or reject (RLS report or reject), or directly reject the message, carrying the relevant reject cause (reject cause); if necessary, the H-PCRF formulates relevant policies, including PCC rules, event triggers, etc., H-PCRF The message returned to the V-PCRF carries the established policy.
  • Step S408 If the online charging is performed, the V-PCRF sends a Sy session creation/modification message (initial/intermediate roaming local report request) to the V-OCS, and carries the H-OCS authorized RLS overall credit width delivered by the H-PCRF. value.
  • Step S409 the V-OCS stores the credit threshold, and returns a Sy session creation/modification response message (initial/intermediate roaming local report response) to the V-PCRF. Subsequent V-OCS can perform credit management and account amount processing based on the credit threshold authorized by the H-OCS.
  • step S410 the V-PCRF stores the message returned by the H-PCRF, and returns a corresponding response message to the PCEF according to the authorized roaming local service or the PCC rule; if the policy is defined by the H-PCRF, the relevant technical process execution rule is issued. . If the H-PCRF authorizes the V-PCRF to perform the roaming local service function, the V-PCRF sends the PCC rules related to the service to the PCEF, and delivers the corresponding QoS rules to each BBERF for installation and execution.
  • Step S411 if it is online charging, the PCEF will activate the online charging session, and provide data information such as roaming local service indications to the V-OCS for decision.
  • the PCEF sends an online charging session activation request message to the V-OCS carrying a special charging key and/or a roaming service identity or indication.
  • Step S412 the V-OCS performs a credit authorization according to the service information of the PCEF credit request and the authorization and the issued threshold of the H-OCS, and issues a corresponding credit quota to the PCEF; the V-OCS sends an online charging session activation response (ie, , creating a credit response to the PCEF, carrying credit information such as credit quotas; technical processing of credit management processes between H-OCS and H-PCEF similar to related technologies.
  • an online charging session activation response ie, creating a credit response to the PCEF, carrying credit information such as credit quotas; technical processing of credit management processes between H-OCS and H-PCEF similar to related technologies.
  • Step S413 the PCEF installs and executes a policy, such as a PCC rule, an event trigger, etc.; the gateway where the PCEF is located returns a response to the UE to establish an IP-CAN session, and carries the assigned IP address.
  • a policy such as a PCC rule, an event trigger, etc.
  • Step S414 in the business process, the credit quota issued by the V-OCS to the PCEF is exhausted, and the business Continuing, the PCEF continues to send a credit control request message to the V-OCS to apply for a credit line, and reports the current usage amount in the request message.
  • Step S415 The V-OCS stores the current usage amount, and determines whether to authorize the PCEF new credit line according to the total threshold value of the H-OCS authorization; the V-OCS sends a response message to the PCEF, and carries the newly authorized credit line.
  • the credit management interaction process between the PCEF and the V-OCS in the visited network of the S414 and S415 steps can refer to the credit management between the H-PCEF and the H-OCS in the existing home network.
  • the online charging function of the roaming local service can be performed.
  • the session ends the granularity can be for each IP-CAN session or the last IP-CAN session under the APN, which is determined according to the operator policy
  • the H-OCS authorized credit threshold remaining usage (and / or current use)
  • the amount to be reported to the H-OCS the PCEF will send a credit termination report to the V-OCS to initiate the credit session.
  • the V-PCRF will send a Sy Session Termination Request (Roaming Local Service Termination Report) to the V-OCS, telling the session to terminate, and obtain the remaining amount of credit threshold (and / or current usage).
  • the V-PCRF sends the credit threshold remaining amount (and/or current usage) to the H-PCRF via an S9 session modification or termination request.
  • the H-PCRF initiates a home Sy session termination request (roaming local service termination report) to the H-OCS, notifies the session termination, and carries the credit threshold remaining amount (and/or current usage amount) to the H-OCS.
  • the process description is shown in Figure 5. The steps are described as follows:
  • Step S501 The PCEF detects that the IP-CAN session needs to be triggered, and the trigger may be from another network element, the UE, or the PCEF itself (for example, all PCC rules are deleted).
  • Step S502 The PCEF sends an IP-CAN session termination indication message to the V-PCRF, and informs the V-PCRF that the IP-CAN session is being deleted, and provides related information to the V-PCRF.
  • Step S503 The PCC rule related to the roaming local service in the IP-CAN session is generated by the V-PCRF, and the V-PCRF identifies and deletes the rule and related information after receiving the session termination request.
  • Step S504 The H-PCRF identifies that there is a roaming local service in the IP-CAN session, and if there is a Sy session, the V-PCRF sends a Sy session termination request (roaming local service termination report) V-OCS, Tell the end of the session and get the remaining amount of credit threshold (and/or current usage) from V-OCS.
  • Step S505 the V-OCS terminates the Sy session, deletes related information, and returns a Sy session termination response message (roaming local service termination response) to the V-PCRF, where the message carries the remaining amount of the credit value of the user/service (and/or Current usage).
  • Step S506 the V-PCRF sends an S9 session modification or termination request message to the H-PCRF, and the notification is sent.
  • H-PCRF terminates the IP-CAN session; if the IP-CAN session is the last IP-CAN session under the APN, terminates the S9 session, if not the last IP-CAN session, then modifies the S9 session, terminating the The sub-session corresponding to the IP-CAN session; the message carries the remaining amount of the credit threshold (and/or the current usage).
  • Step S507 the H-PCRF will identify and delete the IP-CAN related PCC rule, and delete the IP-CAN session related information, for example, subscription information, etc.; initiate a Sy session termination request, and report the credit threshold remaining amount (and / or the current usage) to H-OCS.
  • Step S508 the H-PCRF identifies that there is a roaming local service in the IP-CAN session, and if there is a Sy session, the Sy session termination request (roaming local service termination report) is sent to the H-OCS, the session is terminated, and the credit threshold is carried. The remaining amount (and / or current usage) is given to H-OCS.
  • Step S509 The H-OCS stores the remaining amount of the credit threshold, terminates the Sy session, and deletes related information; and returns a Sy session termination response message (roaming local service termination response) to the H-PCRF.
  • Step S510 the PCEF deletes all PCC rules related to the IP-CAN.
  • Step S511 The H-PCRF sends an S9 session modification or termination response message to the V-PCRF.
  • Step S512 the V-PCRF sends an IP-CAN session termination response message to the PCEF to notify the end of the IP-CAN session; the message is a response message of step 502.
  • Step S513 for the online charging roaming local service, the PCEF sends a final report to the V-OCS.
  • Step S514 the V-OCS sends a credit termination response message to the PCEF, and terminates the online charging session.
  • the PCEF may be triggered to initiate a credit request to the V-OCS or send a final report request; if the H-OCS authorized threshold has not arrived yet
  • the interaction process between PCEF and V-OCS is the same as the credit management process in Figure 4.
  • the process related to billing related processing is the same, and no repeated description is made here.
  • the V-OCS sends a request message to the V-PCRF to request the credit threshold.
  • the V-PCRF initiates through the S9 interface.
  • the S9 session modification process requests the threshold from the H-PCRF.
  • the H-PCRF initiates the Sy session modification process, re-requests the total credit value to the H-OCS, and carries the current actual usage amount to the H-OCS; the H-OCS returns the Sy session modification response message to the H-PCRF, carrying the new Authorize the credit threshold or reject the request to the H-PCRF.
  • the H-PCRF transmits the authorization result and the threshold information to the V-PCRF of the visited network through the S9 interface.
  • the V-PCRF sends a Sy session modification response message to the V-OCS to inform the new authorization result and the threshold information.
  • Other processes are related to the IP-CAN session modification process of the related art, and will not be repeatedly described herein.
  • FIG. 6 is a signaling flowchart of creating an IP-CAN session when a UE roams according to Embodiment 2 of the present invention.
  • the V-PCRF receives a session creation request of the PCEF, and sends an S9 session to create or Modifying the request message to the H-PCRF; Because it is a roaming local service, the H-PCRF, while deciding to authorize the roaming of the local service, discovers that the V-PCRF is authorized to roam the local service right, and needs to authorize the credit threshold, then the Sy session is created/ Modify the message (initial/intermediate roaming local report request) to H-OCS.
  • the H-OCS authorizes the credit threshold according to the roaming local service indication or identifier in the message, or according to the roaming agreement or signing (the credit threshold granularity may be the user or the session or the service level, and may be the account amount, time,
  • the traffic or event usage is sent to the H-PCRF in the Sy Session Creation/Modification Response message.
  • H-PCRF creates/modifies the response message through the S9 session. The value is sent to the V-PCRF.
  • the V-PCRF formulates and delivers the PCC rule related to the roaming local service to the PCEF. And carrying the credit value of the attribution of the attribution to the PCEF.
  • the PCEF sends a credit creation request message to the V-OCS, carrying the roaming local service information and the credit threshold to the V-OCS.
  • the V-OCS stores the credit threshold and performs credit management and account amount processing according to the service information carried in the request message and the credit threshold authorized by the H-OCS.
  • the V-OCS sends an online charging session activation response (i.e., creates a credit response) to the PCEF, carrying the associated credit information. As shown in Figure 6, the following steps are included:
  • Step S601 607 the processing is the same as the step S401 407 of the first embodiment, the PCEF requests the IP-CAN session establishment, and the H-OCS authorization credit threshold is delivered to the V-PCRF.
  • Step S608 The V-PCRF stores the message returned by the H-PCRF. According to the authorized roaming local service or PCC rules, the corresponding response message is returned to the PCEF. If the policy is developed for the H-PCRF, it is issued as the relevant technical process execution rules. If the H-PCRF authorizes the V-PCRF to perform the roaming local service function, the V-PCRF sends the PCC rule related to the service to the PCEF, and the corresponding QoS rule is sent to each BBERF, and the installation is performed; the response message carries the H- The H-OCS authorized RLS overall credit value issued by the PCRF is given to the PCEF.
  • Step S609 online charging
  • the PCEF sends an online charging session activation request message to the V-OCS to activate the online charging session, and provides the roaming local service indication and the RLS overall credit threshold authorized by the H-OCS to make a decision for the V-OCS.
  • Step S610 S613 the processing is the same as the step S412 415 of the first embodiment.
  • the V-OCS performs credit management on the roaming local service, and the PCEF installs and executes the related PCC rules, and the description is not repeated.
  • the roaming local service of online charging can be used when the user roams to the visited network.
  • FIG. 7 is a schematic structural diagram of an H-OCS according to an embodiment of the present invention, where the H-OCS includes:
  • the receiving judging module 71 is configured to: receive a Sy interface request message, where the Sy interface is requested The message carries the roaming local service identifier or indication; determines the roaming local service authority of the user according to the Sy interface request message, and determines the sending credit threshold;
  • the sending module 72 is configured to: send the credit threshold to the H-PCRF through the Sy interface.
  • the receiving determining module 71 is further configured to: receive the session termination request reported by the H-PCRF through the Sy interface, terminate the Sy session, and delete related information; the sending module 72 is further configured to: A session termination response is returned to the H-PCRF.
  • the receiving judging module 71 is further configured to: receive a session modification request sent by the H-PCRF through the Sy interface, where the session modification request is carried The actual usage usage of the current credit threshold; the sending module 72 is further configured to: return a session modification response to the H-PCRF, where the session modification response carries a new credit threshold or a rejection request.
  • FIG. 8 is a schematic structural diagram of an H-PCRF device according to an embodiment of the present invention, where the H-PCRF device includes:
  • the receiving module 81 is configured to: receive a credit threshold sent by the H-OCS through the Sy interface; and send a module 82, configured to: send the credit threshold to the V-PCRF by using an S9 session creation or modification response message.
  • the sending module 82 is further configured to: send a Sy interface request message to the H-OCS, where the Sy interface request message carries a roaming local service identifier or indication.
  • the sending module 82 is further configured to: send a session termination request to the H-OCS; the receiving module 81 is further configured to: receive a session termination response returned by the H-OCS; to terminate the session.
  • FIG. 9 is a schematic structural diagram of a V-OCS according to an embodiment of the present invention, where the V-OCS includes:
  • a receiving module 91 configured to: receive a credit threshold from the V-PCRF;
  • the processing module 92 is configured to: send an online charging session activation response carrying the relevant credit to the PCEF, or trigger the PCEF to initiate a re-authentication process.
  • the receiving module 91 is configured to receive a credit threshold from the V-PCRF in the following manner: receiving the credit threshold from the V-PCRF through a Sy interface; or from the V-PCRF through the PCEF The credit threshold is received, and the implementation process can be seen in FIG. 4 and FIG. 6.
  • the receiving module 91 is further configured to: receive a session termination request sent by the V-PCRF; and the processing module 92 is further configured to: return a session termination response to the V-PCRF.
  • the receiving module 91 is further configured to: receive a credit termination report sent by the PCEF; and the processing module 92 is further configured to: return a credit termination response to the PCEF.
  • FIG. 10 is a schematic structural diagram of a V-PCRF device according to an embodiment of the present invention.
  • the V-PCRF device includes:
  • the receiving module 101 is configured to: receive a credit threshold sent by the H-PCRF to create or modify a response message by using an S9 session;
  • the sending module 102 is configured to: send the credit threshold to the V-OCS.
  • the sending module 102 is configured to send the credit threshold to the V-OCS in the following manner: sending the credit threshold to the V-OCS through a Sy interface or a PCEF.
  • the sending module 102 is further configured to: send a session termination request to the V-OCS; and the receiving module 101 is further configured to: receive a session termination response returned by the V-OCS.
  • H-OCS H-PCRF device
  • V-OCS V-PCRF devices
  • the roaming local service of the online charging can be used.

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Abstract

一种漫游本地业务的在线计费方法、H-OCS、H-PCRF装置、V-OCS及V-PCRF装置。所述漫游本地业务的在线计费方法包括：H-OCS通过Sy接口向H-PCRF发送信用阈值；所述H-PCRF通过S9会话创建或修改响应消息向V-PCRF发送所述信用阈值；V-OCS从所述V-PCRF接收所述信用阈值；以及所述V-OCS向PCEF发送携带相关信用的在线计费会话激活响应，或触发所述PCEF发起重鉴权流程。

Description

漫游本地业务的在线计费方法、 H-OCS及 V-OCS
技术领域
本发明涉及无线通信系统中策略和计费控制技术， 尤其涉及一种漫游本 地业务的在线计费方法、 归属地在线计费系统（H-OCS ) 、 归属地策略与计 费规则功能（ H-PCRF )装置、 拜访地在线计费系统（ V-OCS )及拜访地策略 与计费规则功能 （V-PCRF )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 ) 由演进的通用陆地无线接入网 ( E-UTRAN, Evolved Universal Terrestrial Radio Access Network ) 、 移动' 1"生 管理实体（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 ) 、 3 GPP的认证 4受权计费 ( AAA, Authentication, Authorization and Accounting )月良务器、 策 略和计费规则功能（PCRF, Policy and Charging Rules Function ) 实体及其他 支撑节点组成。 图 1为现有 EPS的组成结构示意图， 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緩存、 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； S-GW 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 ( Internet Protocol , 简称为 IP ) 地址分配、 计费功能、 分组包过滤、 及策略控制等功能。
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， 策略和计费控制 （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 （PCEF, Policy and Charging Enforcement Function )实体存在于 P-GW中， 承载绑定和事件报告功能（ BBERF, Bearer Binding and Event Report Function )实体可存在于 S-GW中， 业务的应用功能 ( AF, Application Function )实体存在于运营商的 IP业务网络， 用户签约数 据库（ SPR, Subscription Profile Repository )可与 HSS合一设置。
在 3GPP中， 通过接入点名称（APN, Access Point Name ) 可以找到对 应 PDN。 通常将用户设备 ( User Equipment, UE )到 PDN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， 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 ) , OCS负责在线计费的统计， PCEF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 ) 。
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； 如果这些业务信息与 PCRF的策略不一致， 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 UE。其中， AF和 PCRF之间的接口是 Rx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 ) 、 QoS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； 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 OCS—起进行信用管理；离线计费时， PCEF和 OFCS 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 也可增强具有流检测功能（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 （Application Detection and Control, 简称 ADC )策略的 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 PDNGW, 通用分组无线业务（GPRS, General Packet Radio Service ) 中的 GPRS网关支持节点 （Gateway GPRS Support Node, GGSN ) 以及互联无线 局域网 （I-WLAN, Interworking Wireless Local Area Network ) 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之间的接口为 Sd接口， TDF 可以根据预配置或 PCRF下发的 ADC规则进行应用检测和策略执行。 PCRF 为 TDF提供 ADC规则或激活 TDF预配置规则， 独立 TDF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。
BBERF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、 S-GW与 P-GW之间釆用代理移动互联网 协议版本 6 ( ΡΜΙΡνό, Proxy Mobile Internet Protocol version 6 )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 PDN所建立的 IP-CAN会话的策略计费控制。
相关技术中， 当用户漫游到拜访地时， 存在两种接入方式， 一种是归属 地路由接入 ( home routed access ) , 一种是本地 J¾导接入 ( Local BreakOut access, LBO access ) , 对于本地疏导接入场景如图 3-1 ( LBO接入漫游场景 下的 PCC架构 )所示， 其中 PCEF位于拜访网络， 拜访网络和归属网络的信 息交互通过拜访地 PCRF ( Visited PCRF, V-PCRF )和归属地 PCRF ( Home 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， V-PCRF通过 S9接口请求建立 S9会话 /子会话， H-PCRF制定 PCC策略， 下 发 PCC规则给 V-PCRF , 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身份（Identity, 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，对于归属网络的签约独立，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 的 V-PCRF决策。 然而， 该用户属于归属地网络， 其资费账户在归属地网络 的 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）， 因此对于该类业务信息归属地网络的 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。
相关技术中用户漫游到拜访地网络后，只能由归属地 OCS( Home OCS , H-OCS )执行在线计费功能，用户可通过拜访地网元（例如，代理 OCS ( proxy OCS ) )连接到 H-OCS, 或者可通过 V-PCRF前传信用请求到 H-PCRF, 再 前传到 H-OCS执行。 但相关技术的这些方法中都只能针对归属地签约业务， H-PCRF或 H-OCS只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， 无法通过相关技术的 多种方案来实现对漫游本地业务的在线计费功能。
另外， 相关技术中， 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， 拜访地 OCS ( Visited OCS, V-OCS ) ) 。 拜访网络的 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， 而不向归属网络的 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， 若 不结算该漫游地费用， 则该漫游地费用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。 发明内容
本发明实施例提供了一种漫游本地业务的在线计费方法、 Η- 0 C S、 H-PCRF装置、 V-OCS及 V-PCRF装置， 以解决如何更好地实现拜访地网络 开展漫游本地业务的在线计费的问题。
本发明实施例提供了一种漫游本地业务的在线计费方法， 应用于漫游拜 访地接入场景下， 该方法包括：
归属地在线计费系统 H-OCS通过 Sy接口向归属地策略与计费规则功能 H-PCRF发送信用阔值；
所述 H-PCRF通过 S9会话创建或修改响应消息向拜访地策略与计费规 则功能 V-PCRF发送所述信用阔值；
拜访地在线计费系统 V-OCS从所述 V-PCRF接收所述信用阔值； 以及 所述 V-OCS向策略和计费执行功能 PCEF发送携带相关信用的在线计费 会话激活响应， 或触发所述 PCEF发起重鉴权流程。
可选地， 所述方法还包括：
所述 H-OCS通过 Sy接口向 H-PCRF发送信用阔值之前，
所述 H-OCS接收 Sy接口请求消息， 其中， 该 Sy接口请求消息中携带 漫游本地业务标识或指示； 以及
所述 H-OCS根据该 Sy接口请求消息判断用户的漫游本地业务权限， 决 策是否发送所述信用阔值。
可选地， 所述 V-OCS从所述 V-PCRF接收所述信用阔值， 包括： 所述 V-OCS通过 Sy接口从所述 V-PCRF接收所述信用阔值； 或者
可选地， 所述信用阔值为预定数目的账户金额、 流量、 时间或事件。 可选地， 所述方法还包括：
当所述信用阔值到达，所述 V-OCS触发重鉴权请求以从 V-PCRF获取新 的信用阔值， 或者触发 Sy接口会话修改以从 V-PCRF获取新的信用阔值； 所述 V-PCRF通过 S9会话修改流程向所述 H-PCRF前传阔值请求； 以 及
所述 H-PCRF通过 Sy接口向所述 H-OCS请求所述新的信用阔值。
可选地， 所述方法还包括：
所述 V-PCRF向所述 V-OCS发送会话终结请求；
所述 PCEF向所述 V-OCS发送信用终结报告；
其中， 所述会话终结请求或所述信用终结报告中包含所述信用阔值的使 用用量和 /或剩余用量。
可选地， 所述方法还包括：
所述 V-PCRF 将所述信用阔值的使用用量和 /或剩余用量前传给所述 H-PCRF; 以及
所述 H-PCRF通过所述 Sy接口报告所述信用阔值的使用用量和 /或剩余 用量给所述 H-OCS。
本发明实施例还提供了一种归属地在线计费系统 H-OCS, 包括： 接收判断模块， 其设置成： 接收 Sy接口请求消息， 其中， 该 Sy接口请 求消息中携带漫游本地业务标识或指示； 根据该 Sy接口请求消息判断用户 的漫游本地业务权限， 确定发送信用阔值； 以及
发送模块，其设置成：通过 Sy接口向归属地策略与计费规则功能 H-PCRF 发送所述信用阔值。
可选地， 所述接收判断模块还设置成： 接收所述 H-PCRF通过所述 Sy 接口报告的会话终结请求， 终结 Sy会话， 删除相关信息； 以及
所述发送模块还设置成： 向所述 H-PCRF返回会话终结响应。
可选地， 所述接收判断模块还设置成： 接收所述 H-PCRF通过所述 Sy 接口发送的会话修改请求， 其中， 该会话修改请求中携带当前信用阔值的实 际使用用量； 以及
所述发送模块还设置成： 向所述 H-PCRF返回会话修改响应， 其中， 该 会话修改响应中携带新的信用阔值或拒绝请求。
本发明实施例另提供了一种归属地策略与计费规则功能 H-PCRF装置， 包括：
接收模块， 其设置成： 接收归属地在线计费系统 H-OCS通过 Sy接口发 送的信用阈值； 以及
发送模块， 其设置成： 通过 S9会话创建或修改响应消息向拜访地策略 与计费规则功能 V-PCRF发送所述信用阔值。
可选地，所述发送模块还设置成：向所述 H-OCS发送 Sy接口请求消息， 其中， 该 Sy接口请求消息中携带漫游本地业务标识或指示。
可选地， 所述发送模块还设置成： 向所述 H-OCS发送会话终结请求； 以 及
所述接收模块还设置成： 接收所述 H-OCS返回的会话终结响应。
本发明实施例又提供了一种拜访地在线计费系统 V-OCS, 包括： 接收模块， 其设置成： 从拜访地策略与计费规则功能 V-PCRF接收信用 阔值； 以及
处理模块， 其设置成： 向策略和计费执行功能 PCEF发送携带相关信用 的在线计费会话激活响应， 或触发所述 PCEF发起重鉴权流程。
可选地， 所述接收模块是设置成以如下方式从 V-PCRF接收信用阔值： 通过 Sy接口从所述 V-PCRF接收所述信用阔值； 或者， 通过所述 PCEF 从所述 V-PCRF接收所述信用阔值。
可选地， 所述接收模块还设置成： 接收所述 V-PCRF发送的会话终结请 求； 以及
所述处理模块还设置成： 向所述 V-PCRF返回会话终结响应。
可选地，所述接收模块还设置成：接收所述 PCEF发送的信用终结报告； 所述处理模块还设置成： 向所述 PCEF返回信用终结响应。
本发明实施例还提供了一种拜访地策略与计费规则功能 V-PCRF装置， 包括： 接收模块， 其设置成： 接收归属地策略与计费规则功能 H-PCRF通过 S9 会话创建或修改响应消息发送的信用阔值； 以及
发送模块，其设置成：向拜访地在线计费系统 V-OCS发送所述信用阔值。 可选地，所述发送模块是设置成以如下方式向 V-OCS发送所述信用阔值: 通过 Sy接口或策略和计费执行功能 PCEF向所述 V-OCS发送所述信用 阔值。
可选地， 所述发送模块还设置成： 向所述 V-OCS发送会话终结请求； 以 及
所述接收模块还设置成： 接收所述 V-OCS返回的会话终结响应。
本发明实施例中， 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。
附图概述
图 1为现有 EPS系统的组成结构示意图；
图 2为根据相关技术的 PCC非漫游组成架构示意图；
图 3-1为根据相关技术的 PCC漫游拜访地接入的架构示意图；
图 3-2为本发明实施例的 PCC漫游拜访地接入的架构示意图；
图 4为本发明实施例一的 UE漫游时创建 IP-CAN会话的信令流程图； 图 5为本发明实施例一的 UE漫游时终结 IP-CAN会话的信令流程图； 图 6为本发明实施例二的 UE漫游时创建 IP-CAN会话的信令流程图； 图 7为本发明实施例的 H-OCS的结构示意图；
图 8为本发明实施例的 H-PCRF的结构示意图；
图 9为本发明实施例的 V-OCS的结构示意图； 以及
图 10为本发明实施例的 V-PCRF的结构示意图。
本发明的较佳实施方式 下文中将结合附图对本发明的实施例进行详细说明。 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任意组合。
如图 3-2所示， 图 3-2为本发明实施例的 PCC漫游拜访地接入的架构示 意图， 对比相关技术的 PCC漫游拜访地接入的架构示意图 3-1 , H-OCS和 H-PCRF通过 Sy接口交互 ,传送 H-OCS授权的信用阔值给 H-PCRF , H-PCRF 通过 S9接口传送给 V-PCRF; 拜访地网络中， V-PCRF可通过 Sy接口传送 该信用阔值给 V-OCS , 或者通过 PCEF中转给 V-OCS , 由 V-OCS执行实时 信用管理。
根据上述架构，本发明实施例提供了一种漫游本地业务的在线计费方法， 应用于漫游拜访地接入场景下， 该方法包括：
H-OCS通过 Sy接口向 H-PCRF发送信用阔值；
所述 H-PCRF通过 S9会话创建或修改响应消息向 V-PCRF发送所述信 用阔值；
V-OCS从所述 V-PCRF接收所述信用阔值； 以及
所述 V-OCS向 PCEF发送携带相关信用的在线计费会话激活响应，或触 发所述 PCEF发起重鉴权流程。
需要说明的是， 本文中提到的 H-OCS与 HOCS、 H-PCRF与 HPCRF、 V-OCS与 VOCS以及 V-PCRF与 VPCRF均为同一概念。
实施例一
( 1 ) 漫游本地业务的会话创建
如图 4所示， 图 4为本发明实施例一的 UE漫游时创建 IP-CAN会话的 信令流程图， 会话创建过程中， VPCRF 收到 PCEF 的会话创建请求， 发送 S9会话创建或修改请求消息给 HPCRF; 由于是漫游本地业务， HPCRF在决 策授权漫游本地业务的同时，若发现授权 VPCRF漫游本地业务权限的同时， 需要授权信用阔值， 则发送 Sy会话创建 /修改消息（初始 /中间漫游本地报告 请求）给 HOCS。 HOCS根据消息中的漫游本地业务指示或标识， 根据漫游 协议或签约，授权信用阔值（该信用阔值粒度可以为用户或会话或业务级别， 可以为账户金额、 时间、 流量或事件等用量）在 Sy会话创建 /修改响应消息 中发送给 HPCRF。 HPCRF通过 S9会话创建 /修改响应消息将该信用阔值发 送给 VPCRF。 VPCRF发送 Sy会话创建 /修改消息 （初始 /中间漫游本地报告 请求）给 VOCS, 其中携带该信用阔值。 VOCS根据该 HOCS授权的信用阔 值执行信用管理和账户金额处理。 PCEF发送在线计费会话激活请求消息给 VOCS, 携带专用计费密钥 （ special charging key )和 /或漫游本地业务标识或 指示； VOCS发送在线计费会话激活响应 （即， 创建信用响应）给 PCEF, 携带相关的信用信息。 如图 4所示， 包括如下步骤：
步骤 S401 , 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的 PDN标识。
步骤 S402, 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， 若 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 业务方案指示传送给 V-PCRF。
步骤 S403 , V-PCRF根据用户标识判断该用户为漫游用户； 若 H-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子会话中携带该用 户的签约信息、 PDN标识以及 IP地址等。 若 H-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子会话中携带该用户的签约信息、 PDN标 识以及 IP地址等。
若 V-PCRF支持漫游本地业务（ Roaming Local Service, RLS )功能， 则 在该 CCR请求消息中携带的支持特征（ support feature )中设置 RLS功能（或 若 RLS功能为该版本必选功能，则直接设置该版本 support feature功能即可 ); 若该 RLS功能不是必选功能， 则可选地， V-PCRF除了发送 support feature 能力协商外还需要发送 RLS请求给 H-PCRF以请求该 RLS功能的授权； 请 求方式不做限定，例如，在该 CCR消息中携带 RLS request AVP给 H-PCRF。 步骤 S404 , 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。
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 S405, 由于是漫游本地业务， 若为在线计费， H-PCRF在决策授权 漫游本地业务的同时， 发现授权 V-PCRF漫游本地业务权限的同时需授权信 用阔值， 则 H-PCRF激活 Sy会话， 发送 Sy会话创建 /修改消息 （初始 /中间 漫游本地报告请求）给 H-OCS, 携带业务相关信息（例如， 漫游本地业务标 识或指示） ， 或携带该用户的授权信息 （例如， 漫游本地业务授权指示） 。
步骤 S406, H-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） ， 授权信用阔值（该信用阔值粒度可以为用 户或会话或业务级别， 可以为账户金额、 时间、 流量或事件等用量）给该用 户在拜访网络使用； H-OCS发送 Sy会话创建 /修改响应消息（初始 /中间漫游 本地报告响应）给归属地 H-PCRF, 消息中携带该信用阔值。
步骤 S407 , H-PCRF根据 V-PCRF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 H-PCRF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 V-PCRF , 消息中可能包含表示该功能支持的 support feature, H-PCRF给 V-PCRF的 RLS授权指示、 以及可能会存在的授 权运营商列表（list )和授权业务 list等详细信息。 授权 V-PCRF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） ； 为在线计费时， 则 消息中携带 H-OCS授权的整体信用阔值；
若 H-PCRF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 H-PCRF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支持或拒绝 （RLS report或 reject ) , 或者直接拒绝该消息，携带相关拒绝原因（reject cause ) );若需要，则 H-PCRF 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 S408, 若为在线计费， 则 V-PCRF发送 Sy会话创建 /修改消息（初 始 /中间漫游本地报告请求 )给 V-OCS, 携带 H-PCRF下发的 H-OCS授权的 RLS整体信用阔值。
步骤 S409, V-OCS存储该信用阔值，返回 Sy会话创建 /修改响应消息（初 始 /中间漫游本地报告响应 )给 V-PCRF。 后续 V-OCS可根据该 H-OCS授权 的信用阔值执行信用管理和账户金额处理。
步骤 S410 , V-PCRF存储 H-PCRF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 H-PCRF制定的策略， 则如相关技术流程执行规则下发。 若为 H-PCRF授权 V-PCRF执行漫游本地 业务功能， 则 V-PCRF制定该业务相关 PCC规则下发给 PCEF, 以及将相应 的 QoS规则下发各 BBERF, 安装执行。
步骤 S411 , 如果是在线计费， PCEF将激活在线计费会话， 提供漫游本 地业务指示等数据信息给 V-OCS做决策。 PCEF发送在线计费会话激活请求 消息给 V-OCS , 携带 special charging key和 /或漫游业务标识或指示。
步骤 S412, V-OCS根据 PCEF信用请求的业务信息和 H-OCS的授权和 下发的阔值， 执行信用授权， 下发相应信用配额给 PCEF; V-OCS发送在线 计费会话激活响应 （即， 创建信用响应）给 PCEF, 携带信用配额等信用信 息； 技术处理类似于相关技术的 H-OCS和 H-PCEF之间的信用管理流程。
步骤 S413 , PCEF安装并执行策略，如， PCC规则、事件触发器等； PCEF 所在网关向 UE返回应答建立 IP-CAN会话， 携带分配的 IP地址。
步骤 S414, 业务过程中， V-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 V-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 S415 , V-OCS存储当前的使用用量，并根据 H-OCS授权的总阔值， 判断是否授权 PCEF新的信用额度； V-OCS给 PCEF发送响应消息， 携带新 授权的信用额度。该 S414和 S415步骤的拜访网络内 PCEF和 V-OCS之间的 信用管理交互流程，可借鉴现有归属网络中 H-PCEF和 H-OCS之间的信用管 理。
( 2 ) 漫游本地业务的会话终结
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， 其根据运 营商策略决定） ， H-OCS 授权的信用阔值剩余用量（和 /或当前使用用量） 需要报告给 H-OCS, PCEF将会发送信用终结报告给 V-OCS发起信用会话终 结。 V-PCRF将会发送 Sy会话终结请求（漫游本地业务终结报告）给 V-OCS, 告知会话终结， 获取信用阔值剩余用量（和 /或当前使用用量） 。 V-PCRF将 该信用阔值剩余用量 (和 /或当前使用用量 )通过 S9会话修改或终结请求发 送给 H-PCRF。 H-PCRF发起归属地的 Sy会话终结请求（漫游本地业务终结 报告）给 H-OCS, 告知会话终结， 并携带该信用阔值剩余用量（和 /或当前 使用用量）给 H-OCS。 流程描述如图 5所示， 各步骤描述如下：
步骤 S501 , PCEF检测到需要触发终结 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 S502, PCEF 向 V-PCRF发送 IP-CAN会话终结指示消息； 告知 V-PCRF该 IP-CAN会话正在被删除， 并提供相关信息给 V-PCRF。
步骤 S503 , 该 IP-CAN会话中的漫游本地业务相关的 PCC 规则由 V-PCRF生成， 收到该会话终结请求后 V-PCRF将识别并删除该类规则及其 相关信息。
步骤 S504, H-PCRF识别该 IP-CAN会话中存在漫游本地业务， 且存在 Sy会话，则 V-PCRF发送 Sy会话终结请求（漫游本地业务终结报告） V-OCS, 告知会话终结，并向 V-OCS获取信用阔值剩余用量（和 /或当前使用用量）。 步骤 S505 , V-OCS终结该 Sy会话， 删除相关信息， 返回 Sy会话终结 响应消息 （漫游本地业务终结响应）给 V-PCRF, 消息中携带该用户 /业务的 信用阔值剩余用量（和 /或当前使用用量） 。
步骤 S506 , V-PCRF发送 S9会话修改或终结请求消息给 H-PCRF , 通知
H-PCRF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， 若不是最后一个 IP-CAN会话， 则修改 S9 会话， 终结该 IP-CAN会话对应的子会话； 该消息中携带信用阔值剩余用量 (和 /或当前使用用量） 。
步骤 S507 , H-PCRF将识别并删除该 IP-CAN相关的 PCC规则， 并删除 该 IP-CAN会话相关的信息， 例如， 签约信息等； 发起 Sy会话终结请求， 报 告信用阔值剩余用量（和 /或当前使用用量）给 H-OCS。
步骤 S508, H-PCRF识别该 IP-CAN会话中存在漫游本地业务， 且存在 Sy会话， 则发送 Sy会话终结请求（漫游本地业务终结报告）给 H-OCS, 告 知会话终结， 并携带信用阔值剩余用量（和 /或当前使用用量）给 H-OCS。
步骤 S509, H-OCS存储该终结该信用阔值剩余用量， 终结该 Sy会话， 删除相关信息； 返回 Sy会话终结响应消息 （漫游本地业务终结响应）给 H-PCRF。
步骤 S510 , PCEF删除该 IP-CAN相关的所有 PCC规则。
步骤 S511 , H-PCRF发送 S9会话修改或终结响应消息给 V-PCRF。
步骤 S512, V-PCRF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 502的响应消息。
步骤 S513 ,对于在线计费的漫游本地业务， PCEF给 V-OCS发送终结报 告。
步骤 S514, V-OCS发送信用终结响应消息给 PCEF, 并终结该在线计费 会话。
需要说明的是，上述步骤并非按顺序执行，例如，上述步骤 S513和 S514 可以在步骤 S512之后执行， 也可以在 S501之后 S502之前执行， 还可以在 S505之后 S506之前执行。
( 3 ) 漫游本地业务的会话修改
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 V-OCS发起信用请求或发送终结报告请求；若 H-OCS 授权的阔值尚未到达，则 PCEF和 V-OCS之间的交互处理流程同图 4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。
在会话过程中，若 H-OCS授权给拜访地的总信用阔值到达，且业务需要 继续， 则 V-OCS会发送请求消息给 V-PCRF, 请求信用阔值， V-PCRF通过 S9接口发起 S9会话修改流程， 向 H-PCRF请求该阔值。 H-PCRF发起 Sy会 话修改流程，向 H-OCS重新请求信用总阔值，并携带上当前的实际使用用量 给 H-OCS; H-OCS返回 Sy会话修改响应消息给 H-PCRF, 携带新的授权信 用阔值或拒绝请求给 H-PCRF。 H-PCRF将授权结果及阔值信息通过 S9接口 传送到拜访网络的 V-PCRF。 V-PCRF发送 Sy会话修改响应消息给 V-OCS, 告知新的授权结果及阔值信息。 其它流程同相关技术的 IP-CAN会话修改流 程， 这里不做重复描述。
实施例二
( 1 ) 漫游本地业务的会话创建
如图 6所示， 图 6为本发明实施例二的 UE漫游时创建 IP-CAN会话的 信令流程图， 会话创建过程中， V-PCRF收到 PCEF的会话创建请求， 发送 S9会话创建或修改请求消息给 H-PCRF； 由于是漫游本地业务， H-PCRF在 决策授权漫游本地业务的同时，发现授权 V-PCRF漫游本地业务权限的同时， 需要授权信用阔值， 则发送 Sy会话创建 /修改消息（初始 /中间漫游本地报告 请求）给 H-OCS。 H-OCS根据消息中的漫游本地业务指示或标识， 或根据漫 游协议或签约， 授权信用阔值（该信用阔值粒度可以为用户或会话或业务级 另' J , 可以为账户金额、 时间、 流量或事件等用量）在 Sy会话创建 /修改响应 消息中发送给 H-PCRF。 H-PCRF通过 S9会话创建 /修改响应消息将该信用阔 值发送给 V-PCRF。
与实施例一不同的是， 拜访地不存在 Sy接口部署， 或存在 Sy接口但并 不支持漫游本地业务的阔值传送功能， 则 V-PCRF制定并下发漫游本地业务 相关的 PCC规则给 PCEF, 并携带该归属地授权的信用阔值给 PCEF。 PCEF 给 V-OCS发送信用创建请求消息，携带漫游本地业务信息以及该信用阔值给 V-OCS。 V-OCS存储该信用阔值，并根据请求消息携带的业务信息及 H-OCS 授权的信用阔值执行信用管理和账户金额处理。 V-OCS发送在线计费会话激 活响应（即， 创建信用响应 )给 PCEF, 携带相关的信用信息。 如图 6所示， 包括如下步骤：
步骤 S601 607 , 处理同实施例一的步骤 S401 407, PCEF请求 IP-CAN 会话建立， H-OCS授权信用阔值， 下发到 V-PCRF。
步骤 S608 , V-PCRF存储 H-PCRF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 H-PCRF制定的策略， 则如相关技术流程执行规则下发。 若为 H-PCRF授权 V-PCRF执行漫游本地 业务功能， 则 V-PCRF制定该业务相关 PCC规则下发给 PCEF, 以及将相应 的 QoS规则下发各 BBERF, 安装执行； 响应消息中携带 H-PCRF 下发的 H-OCS授权的 RLS整体信用阔值给 PCEF。
步骤 S609, 在线计费， PCEF发送在线计费会话激活请求消息给 V-OCS 激活在线计费会话， 并提供漫游本地业务指示及 H-OCS授权的 RLS整体信 用阔值给 V-OCS做决策。
步骤 S610 S613 ,处理同实施例一的步骤 S412 415, V-OCS对该漫游本 地业务执行信用管理， PCEF安装和执行相关 PCC规则， 不做重复描述。
本发明实施例中， 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。
如图 7所示， 图 7为本发明实施例的 H-OCS的结构示意图， 该 H-OCS 包括：
接收判断模块 71 , 其用于： 接收 Sy接口请求消息， 其中， 该 Sy接口请 求消息中携带漫游本地业务标识或指示； 根据该 Sy接口请求消息判断用户 的漫游本地业务权限， 确定发送信用阔值； 以及
发送模块 72, 其用于： 通过 Sy接口向 H-PCRF发送所述信用阔值。 另外， 为了终结会话， 所述接收判断模块 71还用于： 接收所述 H-PCRF 通过所述 Sy接口报告的会话终结请求， 终结 Sy会话， 删除相关信息； 所述 发送模块 72还用于： 向所述 H-PCRF返回会话终结响应。
当信用阔值到达时，为了获得新的信用阔值，所述接收判断模块 71还用 于： 接收所述 H-PCRF通过所述 Sy接口发送的会话修改请求， 其中， 该会 话修改请求中携带当前信用阔值的实际使用用量； 所述发送模块 72还用于： 向所述 H-PCRF返回会话修改响应， 其中， 该会话修改响应中携带新的信用 阔值或拒绝请求。
如图 8所示， 图 8为本发明实施例的 H-PCRF装置的结构示意图， 该 H-PCRF装置包括：
接收模块 81 , 其用于： 接收 H-OCS通过 Sy接口发送的信用阔值； 以及 发送模块 82, 其用于： 通过 S9会话创建或修改响应消息向 V-PCRF发 送所述信用阔值。
另外，所述发送模块 82还用于： 向所述 H-OCS发送 Sy接口请求消息， 其中， 该 Sy接口请求消息中携带漫游本地业务标识或指示。
所述发送模块 82还用于： 向所述 H-OCS发送会话终结请求； 所述接收 模块 81还用于： 接收所述 H-OCS返回的会话终结响应； 以便终结会话。
如图 9所示， 图 9为本发明实施例的 V-OCS的结构示意图， 该 V-OCS 包括：
接收模块 91 , 其用于： 从 V-PCRF接收信用阔值； 以及
处理模块 92, 其用于： 向 PCEF发送携带相关信用的在线计费会话激活 响应， 或触发所述 PCEF发起重鉴权流程。 其中，所述接收模块 91是用于以如下方式从 V-PCRF接收信用阔值：通 过 Sy接口从所述 V-PCRF接收所述信用阔值； 或者，通过所述 PCEF从所述 V-PCRF接收所述信用阔值， 实现过程可参见图 4和图 6。
另外， 为了终结会话， 所述接收模块 91还用于： 接收所述 V-PCRF发送 的会话终结请求； 所述处理模块 92还用于： 向所述 V-PCRF返回会话终结响 应。
为了结束在线计费会话， 所述接收模块 91还用于： 接收所述 PCEF发送 的信用终结报告；所述处理模块 92还用于：向所述 PCEF返回信用终结响应。
如图 10所示， 图 10为本发明实施例的 V-PCRF装置的结构示意图， 该
V-PCRF装置包括：
接收模块 101 , 其用于： 接收 H-PCRF通过 S9会话创建或修改响应消息 发送的信用阈值； 以及
发送模块 102, 其用于： 向 V-OCS发送所述信用阔值。
其中，所述发送模块 102是用于以如下方式向 V-OCS发送所述信用阔值： 通过 Sy接口或 PCEF向所述 V-OCS发送所述信用阔值。
另外， 为了终结会话， 所述发送模块 102还用于： 向所述 V-OCS发送会 话终结请求； 所述接收模块 101还用于：接收所述 V-OCS返回的会话终结响 应。
上述 H-OCS、 H-PCRF装置、 V-OCS及 V-PCRF装置之间互相交互， 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。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 上述程序可以存储于计算机可读存储介质中， 如， 只 读存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使 用一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆 用硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明实施例不 限制于任何特定形式的硬件和软件的结合。 佳实施例对本发明进行了详细说明。 本领域的普通技术人员应当理解， 可以 对本发明实施例的技术方案进行修改或者等同替换， 而不脱离本发明实施例 的技术方案的精神和范围， 均应涵盖在本发明的权利要求范围当中。
工业实用性 本发明实施例中， 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。

Claims

权利要求书
1、 一种漫游本地业务的在线计费方法， 应用于漫游拜访地接入场景下， 所述方法包括：
归属地在线计费系统 H-OCS通过 Sy接口向归属地策略与计费规则功能 H-PCRF发送信用阔值；
所述 H-PCRF通过 S9会话创建或修改响应消息向拜访地策略与计费规 则功能 V-PCRF发送所述信用阔值；
拜访地在线计费系统 V-OCS从所述 V-PCRF接收所述信用阔值； 以及 所述 V-OCS向策略和计费执行功能 PCEF发送携带相关信用的在线计费 会话激活响应， 或触发所述 PCEF发起重鉴权流程。
2、 根据权利要求 1所述的方法， 还包括：
所述 H-OCS通过 Sy接口向 H-PCRF发送信用阔值之前， 所述 H-OCS 接收 Sy接口请求消息， 其中， 所述 Sy接口请求消息中携带漫游本地业务标 识或指示； 以及
所述 H-OCS根据所述 Sy接口请求消息判断用户的漫游本地业务权限， 决策是否发送所述信用阔值。
3、 根据权利要求 1所述的方法， 其中：
所述 V-OCS从所述 V-PCRF接收所述信用阔值， 包括：
所述 V-OCS通过 Sy接口从所述 V-PCRF接收所述信用阔值； 或者
4、 根据权利要求 1-3任一权利要求所述的方法， 其中：
所述信用阔值为预定数目的账户金额、 流量、 时间或事件。
5、 根据权利要求 4所述的方法， 还包括：
当所述信用阔值到达， 所述 V-OCS 触发重鉴权请求以从所述 V-PCRF 获取新的信用阔值， 或者触发 Sy接口会话修改以从所述 V-PCRF获取新的 信用阔值；
所述 V-PCRF通过 S9会话修改流程向所述 H-PCRF前传阔值请求； 以 及
所述 H-PCRF通过所述 Sy接口向所述 H-OCS请求所述新的信用阔值。
6、 根据权利要求 5所述的方法， 还包括：
所述 V-PCRF向所述 V-OCS发送会话终结请求；
所述 PCEF向所述 V-OCS发送信用终结报告；
其中， 所述会话终结请求或所述信用终结报告中包含所述信用阔值的使 用用量和 /或剩余用量。
7、 根据权利要求 6所述的方法， 还包括：
所述 V-PCRF 将所述信用阔值的使用用量和 /或剩余用量前传给所述 H-PCRF; 以及
所述 H-PCRF通过所述 Sy接口报告所述信用阔值的使用用量和 /或剩余 用量给所述 H-OCS。
8、 一种归属地在线计费系统 H-OCS, 包括：
接收判断模块， 其设置成： 接收 Sy接口请求消息， 其中， 所述 Sy接口 请求消息中携带漫游本地业务标识或指示； 根据所述 Sy接口请求消息判断 用户的漫游本地业务权限， 确定发送信用阔值； 以及
发送模块，其设置成：通过 Sy接口向归属地策略与计费规则功能 H-PCRF 发送所述信用阔值。
9、 根据权利要求 8所述的 H-OCS, 其中：
所述接收判断模块还设置成： 接收所述 H-PCRF通过所述 Sy接口报告 的会话终结请求， 终结 Sy会话， 删除相关信息； 以及
所述发送模块还设置成： 向所述 H-PCRF返回会话终结响应。
10、 根据权利要求 8或 9所述的 H-OCS, 其中：
所述接收判断模块还设置成： 接收所述 H-PCRF通过所述 Sy接口发送 的会话修改请求， 其中， 所述会话修改请求中携带当前信用阔值的实际使用 用量； 以及
所述发送模块还设置成： 向所述 H-PCRF返回会话修改响应， 其中， 所 述会话修改响应中携带新的信用阔值或拒绝请求。
11、 一种归属地策略与计费规则功能 H-PCRF装置， 包括：
接收模块， 其设置成： 接收归属地在线计费系统 H-OCS通过 Sy接口发 送的信用阈值； 以及
发送模块， 其设置成： 通过 S9会话创建或修改响应消息向拜访地策略 与计费规则功能 V-PCRF发送所述信用阔值。
12、 根据权利要求 11所述的 H-PCRF装置， 其中：
所述发送模块还设置成： 向所述 H-OCS发送 Sy接口请求消息， 其中， 所述 Sy接口请求消息中携带漫游本地业务标识或指示。
13、 根据权利要求 11或 12所述的 H-PCRF装置， 其中：
所述发送模块还设置成： 向所述 H-OCS发送会话终结请求； 以及 所述接收模块还设置成： 接收所述 H-OCS返回的会话终结响应。
14、 一种拜访地在线计费系统 V-OCS, 包括：
接收模块， 其设置成： 从拜访地策略与计费规则功能 V-PCRF接收信用 阔值； 以及
处理模块， 其设置成： 向策略和计费执行功能 PCEF发送携带相关信用 的在线计费会话激活响应， 或触发所述 PCEF发起重鉴权流程。
15、 根据权利要求 14所述的 V-OCS, 其中：
所述接收模块是设置成以如下方式从 V-PCRF接收信用阔值：
通过 Sy接口从所述 V-PCRF接收所述信用阔值； 或者， 通过所述 PCEF 从所述 V-PCRF接收所述信用阔值。
16、 根据权利要求 14或 15所述的 V-OCS, 其中：
所述接收模块还设置成： 接收所述 V-PCRF发送的会话终结请求； 以及 所述处理模块还设置成： 向所述 V-PCRF返回会话终结响应。
17、 根据权利要求 16所述的 V-OCS, 其中：
所述接收模块还设置成： 接收所述 PCEF发送的信用终结报告； 所述处理模块还设置成： 向所述 PCEF返回信用终结响应。
18、 一种拜访地策略与计费规则功能 V-PCRF装置， 包括：
接收模块， 其设置成： 接收归属地策略与计费规则功能 H-PCRF通过 S9 会话创建或修改响应消息发送的信用阔值； 以及
发送模块，其设置成：向拜访地在线计费系统 V-OCS发送所述信用阔值。
19、 根据权利要求 18所述的 V-PCRF装置， 其中：
所述发送模块是设置成以如下方式向 V-OCS发送所述信用阔值： 通过 Sy接口或策略和计费执行功能 PCEF向所述 V-OCS发送所述信用 阔值。
20、 根据权利要求 18或 19所述的 V-PCRF装置， 其中：
所述发送模块还设置成： 向所述 V-OCS发送会话终结请求； 以及 所述接收模块还设置成： 接收所述 V-OCS返回的会话终结响应。
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