WO2005107152A1 - Procede et systeme permettant de facturer l'itinerance - Google Patents

Procede et systeme permettant de facturer l'itinerance Download PDF

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Publication number
WO2005107152A1
WO2005107152A1 PCT/CN2005/000606 CN2005000606W WO2005107152A1 WO 2005107152 A1 WO2005107152 A1 WO 2005107152A1 CN 2005000606 W CN2005000606 W CN 2005000606W WO 2005107152 A1 WO2005107152 A1 WO 2005107152A1
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WO
WIPO (PCT)
Prior art keywords
crf
terminal
charging
proxy
tpf
Prior art date
Application number
PCT/CN2005/000606
Other languages
English (en)
French (fr)
Inventor
Wenlin Zhang
Xiaoqin Duan
Yajuan Wu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP05752336A priority Critical patent/EP1748596B1/en
Priority to AT05752336T priority patent/ATE553562T1/de
Publication of WO2005107152A1 publication Critical patent/WO2005107152A1/zh
Priority to US11/589,422 priority patent/US7689203B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/62Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP based on trigger specification
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/64On-line charging system [OCS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66Policy and charging system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/70Administration or customization aspects; Counter-checking correct charges
    • H04M15/775Account specifications on parallel communications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80Rating or billing plans; Tariff determination aspects
    • H04M15/8038Roaming or handoff
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24Accounting or billing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2215/00Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20Technology dependant metering
    • H04M2215/2026Wireless network, e.g. GSM, PCS, TACS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2215/00Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20Technology dependant metering
    • H04M2215/204UMTS; GPRS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2215/00Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/34Roaming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2215/00Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/72Account specifications
    • H04M2215/7277Account specifications on parallel communications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2215/00Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/74Rating aspects, e.g. rating parameters or tariff determination apects
    • H04M2215/7442Roaming

Definitions

  • the present invention relates to the field of charging, and in particular to a method and system for implementing roaming charging for packet data services. Background of the invention
  • the service data flow for the terminal can only recognize the access point name (APN) and the packet.
  • PDP Context Packet Data Protocol Context
  • PDP Context Packet Data Protocol Context
  • PDP Context Packet Data Protocol Context
  • PDP Context Packet Data Protocol Context
  • PDP Context Packet Data Protocol Context
  • multiple parallel service data flows are likely to be carried through the same PDP Context, and different services may need to use different charging methods for charging.
  • the current GPRS charging system cannot meet this requirement.
  • One demand For example, the terminal carries out streaming media services and multimedia messaging services simultaneously. These two services are carried in the same APN and PDP Context at the same time, but the charging rules applied to these two services are different.
  • the streaming media services need to be Data traffic or the length of time the service is charged for.
  • the multimedia messaging service needs to be charged based on the event.
  • the event can be sending or receiving a multimedia message.
  • a new charging method needs to be proposed for the current GPRS charging system, and a general data stream-based charging mechanism is used.
  • IP Internet Protocol
  • FBC Flow Based Charging
  • 3GPP describes the FBC system structure, functional requirements, and message interaction processes.
  • the FBC system structure that supports online charging is shown in Figure 1A.
  • Customized applications based on mobile network enhanced logic (CAMEL, Customised Application for Mobile Network Enhanced Logic (SCP) Service Control Point (SCP) 101 and Service Data Flow Based Credit Control Function (CC) 102 constitute an online charging system (OCS, Online Charging System) 106.
  • CC 102 is connected to a Service Data Flow Based Charging Rule Function (CRF) 103 through a Ry interface, and CRF 103 is connected to an Application Function (AF) 104 through an Rx interface.
  • the CRF 103 is connected to a transmission plane function entity (TPF, Traffic Plane Function) 105 through an i ⁇ Gx interface, and the CC 102 is connected to the TPF 105 through a Gy interface.
  • TPF Transmission Plane Function
  • CRF 103 is connected to AF 104 through the Rx interface
  • CRF 103 is connected to TPF 105 through the Gx interface
  • TPF 105 is connected to the charging gateway functional entity (CGF, Charging) through the Gz interface
  • a Gateway Function) 107 is connected to a Charging Collection Function (CCF) 108.
  • CGF Charging Collection Function
  • TPF 105 is a functional entity that carries packet data streams. It can distinguish packet data packets that belong to different packet data business processes, and is used to collect offline charging information and execute online messages. With control, when the bearer of the packet data stream is changed, such as during the process of bearer establishment, bearer modification, bearer deletion, etc., the TPF 105 requests the charging rule from the CRF 103 through the Gx interface.
  • the message requesting the charging rule may be carried in the message
  • the terminal's related information, bearer characteristics, and network-related information, etc. where the terminal's related information can be the mobile station integrated business service network international number (MSISDN), the international mobile subscriber identity (IMSI), etc., the information related to the bearer characteristics can be As a quality of service (QoS) parameter, the network-related information may be a mobile network code (MNC;), a mobile country code (MCC), and the like.
  • the TPF 105 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules returned by the CRF 103.
  • a TPF 105 may be served by one or more CRFs 103. When multiple CRFs 103 provide services for the same TPF 105, a corresponding CRF 103 may be selected to interact with it according to the terminal identity.
  • TPF 105 supports pre-defined charging rules and pre-defined packet data flow filters.
  • CRF 103 is a functional entity that stores charging rules and supports dynamic and static charging rules.
  • a dynamic charging rule refers to a charging rule that is generated in real time according to the charging policy of a packet data service and is applied to the corresponding packet data stream.
  • a static charging rule refers to a static charging rule that is used during the terminal's use of the packet data service. Static charging rules can be dynamically activated according to some events during the use of packet data services by the terminal.
  • the CRF 103 may select an appropriate charging rule based on the information provided by the TPF 105, AF 104, or OCS 106. When the TPF 105 requests a charging rule from it or a specific event occurs, the CRF 103 provides the selected charging rule to the TPF 105. '' One CRF 103 can correspond to multiple TPF 105.
  • the AF 104 represents all application-related functional entities.
  • the AF 104 may be an operator's own network entity or a third-party service provider's network entity.
  • the AF 104 provides corresponding information to the CRF 103 so that the CRF 103 can select or configure a corresponding charging rule according to the information.
  • the rule, the information provided by the AF 104 to the CRF 103 includes: identification information of a packet data stream, used to select a charging rule Information, application / service identification, application / service charging rules trigger event, Information such as the type of packet data stream and the rate of the packet data stream.
  • the identification information of the packet data stream can be wild-carded; the type of the packet data stream can be video, audio, etc., the type of the packet data stream is an optional parameter, and the rate of the packet data stream is also an optional parameter.
  • One AF 104 may correspond to multiple CRFs 103. When multiple CRFs 103 correspond to the same AF 104, the corresponding CRJF 103 may be selected to interact with the AF 104 according to the terminal identification.
  • CC 102 is a functional entity that performs credit control and is only used in online charging systems. It can be implemented by adding new functions to the existing OCS 106.
  • the CC 102 in the OCS 106 can provide the CRF 103 with relevant information for selecting a charging rule through the Ry interface.
  • CGF 107 / CCF 108 is a functional entity applied to the offline charging system, and it can inherit the implementation method in the existing GPRS charging system.
  • TPF 105 is a gateway general packet radio service support node (GGSN, Gateway GPRS Support Node), and AF 104 is a service gateway or service server in a packet data network (PDN, Packet Data Network).
  • GGSN Gateway general packet radio service support node
  • AF 104 is a service gateway or service server in a packet data network (PDN, Packet Data Network).
  • IMS IP Multimedia Subsystem
  • AF 104 is a proxy call session control function (P-CSCF, Proxy Call Session Control Function), and CRF 103 is a newly added logical entity.
  • P-CSCF Proxy Call Session Control Function
  • the TPF selects the CRF serving itself through the terminal identity, and the AF also addresses the CRF serving the terminal through the terminal identity. Since the TPF is a functional entity belonging to the bearer layer AF is a functional entity that belongs to the application layer, and the same terminal may have different identifications at different levels. Therefore, the terminal identification at AF and the terminal identification at TPF may be the same or different. And configuration to ensure that the same terminal is addressed to the same CRF according to the different identifications of the same terminal at different levels.
  • the TPF and AF can address a CRF for the same terminal to achieve correct CRF addressing. If the TPF used by a terminal is located in a PLMN other than the PLMN to which the terminal belongs, how the TPF addresses the correct CRF according to the terminal identity to obtain the required charging rules, and then implements packet data stream-based charging. This is the current FBC. Unresolved issues in the mechanism. In addition, when the AF and the CRF are located in different PLMNs, the AF cannot also use the existing addressing mode to address the CRF currently serving the corresponding terminal according to the terminal identification.
  • PLMN Public Land Mobile Network
  • an object of the present invention is to provide a method for implementing roaming charging
  • another object of the present invention is to provide a system for implementing roaming charging, in which a terminal uses a bearer resource or a packet in a currently visited PLMN. In the data service, the terminal is charged.
  • the present invention provides a method for implementing roaming charging, which includes the following steps:
  • a proxy CR configured in the public land mobile communication network PLMN to interact with the charging rule function entity CRF in other PLMNs for charging related information;
  • the terminal uses the bearer resource or packet data service in the currently visited PLMN, it provides the CRF to which the terminal belongs to the CRF to which the terminal belongs by using the proxy CRF in the currently visited PLMN.
  • the CRF to which the terminal belongs selects a charging rule according to the received information
  • the CRF to which the terminal belongs provides charging rules to the transport plane functional entity TPF that currently serves the terminal.
  • the step A is: configuring a TPF proxy CRF in the PLMN currently visited by the terminal to interact with CRFs in other PLMNs for charging related information;
  • the step B is: the TPF in the PLMN currently visited by the terminal is received by the terminal After the bearer request is configured,
  • the proxy CRF requests the charging rule and provides information for selecting the charging rule, and the proxy CR forwards the information for selecting the charging rule to the CRF to which the terminal belongs.
  • step D the method further includes:
  • the application function entity AF in the PLMN to which the terminal belongs receives the packet data service request sent by the terminal, it provides the CRF to which the terminal belongs to select the charging rules. E2. The CRF to which the terminal belongs selects based on the received information. Billing rules
  • the CRF to which the terminal belongs provides the charging rules to the TPF currently serving the terminal.
  • the step A further includes: configuring, in the PLMN currently visited by the terminal, a proxy CRF for the TPF and AF respectively to interact with CRFs in other PLMNs for charging related information; if the terminal sends a bearer to the TPF in the currently visited PLMN, Request, the step B is: after the TPF in the PLMN currently visited by the terminal receives the bearer request sent by the terminal, requests the charging rule from the proxy CRF configured for it, and provides information for selecting the charging rule, the proxy CRP Forward the information used to select the charging rule to the CRF to which the terminal belongs; if the terminal sends a packet data service request to the AF in the currently visited PLMN, the step B is: the AF in the PLMN currently visited by the terminal receives After the packet data service request sent by the terminal, the proxy CRF configured for it is provided with information for selecting a charging rule, and the proxy CRF forwards the information
  • the proxy CR configured for TPF described in Step A is the same as the proxy CRF configured for AF.
  • the method further includes: the terminal-owned CRF is configured for the AF through The proxy CRP provides the AF with the address information of the proxy CRF configured for the TPF.
  • the step A is: configuring a proxy CRF for the AF in the PLMN currently visited by the terminal to interact with CRFs in other PLMNs; and the step B is: After receiving the packet data service request sent by the terminal, the AF in the previously visited PLMN provides the proxy CRF configured with the information to select the charging rule, and the proxy CRF forwards the CRF to the terminal to which the terminal belongs for the charging rule selection information.
  • the method further includes: the TPF in the PLMN to which the terminal belongs receives a bearer request sent by the terminal, the TPF requests a charging rule from the CRF to which the terminal belongs, and provides information for selecting a charging rule; The charging information is used to select the charging rule; the CRF to which the terminal belongs provides the charging rule to the TPF currently serving the terminal.
  • the method further includes: judging whether the PLMN to which the terminal belongs is the PLMN currently visited by the terminal according to the terminal identifier, and if so, providing the CRF to which the terminal belongs to select a charging rule. Otherwise, the proxy CRF configured for the AF is provided with information for selecting a charging rule.
  • the method further includes: judging whether the PLMN to which the terminal belongs is the PLMN currently visited by the terminal according to the terminal identifier, and if so, requesting the charging rule from the CRF to which the terminal belongs; Proxy CRF requests charging rules.
  • the providing the configured proxy CRF with information for selecting a charging rule includes: finding the configured proxy CRF according to a terminal identifier or network access point information, and then providing the configured proxy CRF with information for selecting a charging rule.
  • the forwarding of the information for selecting a charging rule by the proxy CRF to the CRF to which the terminal belongs is: the proxy CRF finds the CRF to which the terminal belongs according to the terminal identifier, and then forwards the information for selecting the charging rule to it.
  • the step D includes the following steps:
  • the CRF to which the terminal belongs sends the selected charging rule to the proxy CRF configured for the TPF.
  • the proxy CRF sends the charging rule to the TPF.
  • the method further includes: proxy CRF according to the PLMN currently visited by the terminal
  • the charging policy of N2005 / 000606 modifies the charging rules provided by the CRF to which the terminal belongs to generate new charging rules.
  • the method further includes: The TPF collects charging information according to a charging rule, and charges the terminal.
  • the invention also discloses a system for implementing roaming charging, which includes: TPF, terminal.
  • the TPF is connected to the CRF or proxy CRF to which the terminal belongs and used to transmit the charging rule request and the selected charging rule.
  • the system further includes: AF, which is connected to the CRF or proxy CRF to which the terminal belongs, and is used to transmit information for selecting a charging rule.
  • the CRF to which the terminal belongs is directly connected to the proxy CRF through an interface.
  • the CRF to which the terminal belongs is connected to the proxy CRF through a gateway CRF.
  • the terminal uses the bearer resource or packet data service in the VPLMN when roaming.
  • the TPF or AF in the VPLMN When the TPF or AF in the VPLMN is addressed, first determine the terminal identifier for an identifier that is not allocated by the network, and then directly select the terminal identifier for it.
  • a configured V-CRF serves the terminal, provides the V-CRF with relevant information for selecting a charging rule, and then the V-CRF 'sends the received relevant information for selecting a charging rule to the H-CRF, In order to enable the H-CRF to determine the current charging rules based on this information, the addressing problem between the functional entities in the charging process according to the service data flow in the FBC mechanism during terminal roaming is solved.
  • a terminal uses a bearer resource of VPLMN or a packet data service, as long as the VPLMN has a functional entity supporting the FBC mechanism, FBC-based charging can be implemented, so that the terminal can continue to roam when the terminal roams.
  • FBC-based charging can be implemented, so that the terminal can continue to roam when the terminal roams.
  • Use a variety of billing methods implement a variety of flexible billing strategies, and achieve perfect and reasonable billing for terminals, thereby attracting end-users to use packet data services more; even if the VPLMN does not support FBC-based machines'
  • the system does not affect the existing GPRS charging mechanism and has good compatibility.
  • FIG. 1A is a schematic structural diagram of an FBC system for online charging
  • FIG. 1B is a schematic structural diagram of an FBC system for offline charging
  • FIG. 2 is a schematic diagram of implementing roaming charging in the present invention
  • FIG. 3 is a schematic diagram of implementing roaming charging according to the first embodiment
  • FIG. 4 is a schematic diagram of implementing roaming charging according to the second embodiment
  • FIG. 5 is a schematic diagram of implementing roaming charging according to the third embodiment
  • FIG. 6 is a schematic diagram of implementing roaming charging according to the fourth embodiment.
  • FIG. 7 is a schematic diagram of implementing roaming charging according to the fifth embodiment. Mode of Carrying Out the Invention
  • CRF is a functional entity that stores charging rules in the FBC mechanism
  • the formulation and selection of charging rules need to be negotiated in advance between the operator and the service provider, and according to the type of end user, such as prepaid users and post-paid users. Paying users, when using the same packet data service, the charging rules selected by the CRF for each terminal may also be different. Therefore, CR is a functional entity with a concept of attribution. Some information related to the terminal and the charging model needs to be attributed to the terminal. CRF interactions can only be obtained.
  • the currently visited PLMN (VPLMN) of the terminal needs to determine a visited CRF to provide services for the roaming terminal, and the visited CRF is connected to the home CRF, so that the visited CRF and home CRFs can interact with each other to select relevant information for charging rules.
  • H-CRF terminal-owned CRF
  • V-CRF terminal currently visited CRF
  • H-CRF is a CRF that stores terminal information and billing model related information.
  • V-CRF is connected to H-CRF.
  • V-CRF It is located in the PLMN currently visited by the terminal, and the H-CRF is located in the PLMN (HPLMN) to which the terminal belongs.
  • the TPF or AF in the VPLMN when addressing, first determines that the terminal identifier is an identifier not assigned by the network, The V-CRF that is pre-configured is directly selected to serve the terminal.
  • the configuration principle may be based on the terminal identification, based on the network access point information, such as APN information, or based on other relevant information; then the TPF or AF provides the V-CRF to the V-CRF.
  • the V-CRF sends related information for selecting the charging rule to the H-CRF, so that the H-CRF can determine the current charging rule according to the information.
  • the V-CRF configured for AF in the VPLMN and the V-CRF configured for TPF may be the same or different.
  • V-CRF can negotiate with H-CRF for charging rules, according to the H-CRF charging rule instructions, and pre-set according to VPLMN. Determine the appropriate charging rule, and issue it to the TPF, and the TPF collects charging information according to the charging rule provided by the V-CRF.
  • FIG. 2 is a schematic diagram of implementing roaming charging in the present invention.
  • AF 201 and TPF 203 are located at VPLMN 20.
  • V-CRF 204 is configured for TPF 203 as a service provider for terminals belonging to other PLMNs.
  • Proxy CRF configure V-CRF 201 for AF 201 as a proxy CRF that serves terminals belonging to other PLMNs.
  • V-CRF 201 and V-CRF 204 may be the same CRF or different CRFs.
  • the above-mentioned proxy CRFs can act as a proxy CRF that interacts with CRFs in other PLMNs, and can also serve as a CRF that provides services to terminals belonging to the VPLMN 20.
  • the terminal is a home terminal in HPLMN 21, and H-CRF 211 in HPLMN 21.
  • the terminal information and charging model related information are stored.
  • the terminal is currently located in the VPLMN 20, and uses the TPF 203 in the VPLMN 20.
  • the TPF 203 After the TPF 203 determines that the terminal's home PLMN is not the PLMN 20 according to the terminal identity, it sends related information for selecting the charging rule to the V-CRF 204.
  • This information can be Bearer-related information.
  • V-CRF 204 determines the terminal's HPLMN 21 according to the terminal identity, and then V-CRF 204 forwards the relevant information for selecting the charging rule to H-CRF 211 in HPLMN 21.
  • AF 201 When the terminal needs to use AF 201 in VPLMN 20, it sends a packet data service request to AF 201.
  • AF 201 receives the packet data service request, and determines that the home PLMN of the terminal is not PLMN 20 according to the terminal identifier, and then sends it to V-CRF 202 for Select the relevant information of the charging rule, which may be information related to the application layer.
  • V-CRF 202 determines the HPLMN 21 of the terminal according to the terminal identity, and then
  • the terminal identification usually contains information about its own PLMN. Therefore, TPF or .AF can determine whether the terminal belongs to a PLMN according to the terminal identification, and V-CRF can also determine the terminal's HPLMN based on the terminal identification.
  • H-CRF 211 received V-CRF 204, or V-CRF 202, or V-CRF 204 and V-CRF
  • H-CRF 211 selects the appropriate charging rule according to the above information, and then sends it to V-CRF 204. Send the selected billing rule.
  • V-CRF 204 may further modify the charging rules provided by H-CRF 211 according to the charging policy of VPLMN 20 to generate new charging rules, and then send the new charging rules to TPF. 203 sent.
  • the TPF 203 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by the V-CRF 204.
  • the terminal initiates a service request to the AF after the bearer is established.
  • the H-CRF 211 receives the application / service related information forwarded by the V-CRF 202
  • H-CRF 211 can also forward the address information of V-CRF 204 to the AP through V-CRJF 202.
  • the subsequent charging rule selection can be performed by the V-CRF 204.
  • the V-CRF 204 can select an appropriate charging rule according to the received information from the AF 201 and the TPF 203 for selecting a charging rule. It is not necessary to request charging rules from H-CRF 211 every time.
  • V-CRF 202 or V-CRF 204 can be directly connected to H-CRF 211 through an interface, which is used to transmit relevant information for selecting charging rules; gateway CRF (GRF (GLM) can also be set in VPLMN 20 and HPLMN 21 respectively -CRF), then V-CRF 202 and V-CRF 204 are connected to G-CRJF in VPLMN 20, H-CR 211 is connected to G-CRF in HPLMN 21, and finally G-CRF in VPLMN 20 is connected to HPLMN 21 G-CRF connected.
  • GRF gateway CRF
  • the terminal can use the TPF in VPLMN, AF in HPLMN; it can also use TPF and AF in VPLMN; it can also use TPF in HPLMN, AF in VPLMN.
  • TPF in VPLMN AF in HPLMN
  • AF in VPLMN AF in VPLMN
  • FIG. 3 is a schematic diagram of implementing roaming charging according to the first embodiment.
  • the terminal uses TPF 302 in VPLMN 30> AF 312 in HPLMN 31, and configures V-CRF 301 for TPF 302 as home.
  • the proxy CRF that provides services to other PLMN terminals, according to the agreement between VPLMN 30 and HPLMN 31, V-CRF 301 in VPLMN 30.
  • the specific process of implementing roaming charging through G-CRF connection includes the following steps:
  • Step A1 After receiving the bearer establishment request initiated by the terminal from the bearer layer, the TPF 302 determines that the PLMN to which the terminal belongs is not the PLMN 30 according to the terminal identity, and requests the V-CRF 301 configured as a proxy CRF in advance. Billing rules Information about fee rules, such as information related to bearers. If the TPF 302 determines that the PLMN to which the terminal belongs is PLMN 30, it directly requests a charging rule from the CRF to which the terminal belongs.
  • Step A2 After receiving the charging rule request from TPF 302, V-CRF 301 determines that the PLMN to which the terminal belongs is PLMN 31 according to the terminal identity, and then forwards the charging rule request to H-CRF 311, and provides the method for selecting the charging rule. Related information.
  • Step A3 After the H-CRF 311 receives the charging rule request, according to the relevant information for selecting the charging rule provided by the TPF 302, it may also include the relevant information for selecting the charging rule provided by the AF 312, if it is online For charging, there may also be information from the OCS, select the appropriate charging rule, and then send the selected charging rule to V-CRF 301.
  • Step A4 After receiving the charging rules provided by H-CRF 311, V-CRF 301 can further modify the charging rules provided by H-CRF 311 according to the charging policy of VPLMN 30 to generate new charging rules.
  • the charging rule is then sent to TPF 302.
  • the TPF 302 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by the V-CRF 301.
  • Step A5 The AF 312 receives the packet data service request sent by the terminal, and determines that the home PLMN of the terminal is PLMN 31 according to the terminal identifier. Since the AF 312 is located in the PLMN 31 to which the terminal belongs, the AF 312 directly sends the request to the H-CRF 311. Application / service related information for selecting charging rules.
  • Step A6 After receiving the application / service related information provided by AF 312, H-CRF 311 selects an appropriate charging rule according to the application / service related information, and then sends the selected charging rule to V-CRF 301.
  • Step A7 After receiving the charging rules provided by H-CRF 311, V-CRF 301 can proceed further. According to the charging policy of VPLMN 30, modify the charging rules provided by H-CRF 311 accordingly to generate new charging rules , And then send a charging rule to the TPF 302. TPF 302 performs packet data filtering on the corresponding packet data stream according to the charging rules provided by V-CRP 301 And billing information collection.
  • the processing process is the same as the above processing process, and details are not described herein again.
  • FIG. 4 is a schematic diagram of implementing roaming charging in Embodiment 2.
  • the terminal uses TPF 403 and AP 401 in VPLMN 40, and configures V-CRF 404 for TPF 403 as belonging to other PLMNs.
  • the terminal provides a proxy CRF, and AF-401 is configured with V-CRF 402 as a proxy CRF that serves terminals belonging to other PLMNs.
  • V-CRF 402 V in VPLMN 40 -There is a connection relationship between CRF 404 and H-CRF 411 in HPLMN 41, such as direct connection or G-CRF connection, and the specific process of implementing roaming charging includes the following steps:
  • Step Bl After receiving the bearer establishment request initiated by the terminal from the bearer layer, the TPF 403 determines that the home PLMN of the terminal is not the PLMN 40 according to the terminal identity, and requests the V-CRF 404 configured for proxy CRF in advance to calculate the account. Charging rules, and also provides relevant information for selecting charging rules, such as information related to bearers.
  • Step B2 After receiving the charging rule request from TPF 302, V-CRF 404 determines that the PLMN to which the terminal belongs is PLMN 41 according to the terminal identity, and then forwards the charging rule request to H-CRF 411, and provides the method for selecting the charging rule. Related information.
  • Step B3 After the H-CRF 411 receives the charging rule request, according to the relevant information for selecting the charging rule provided by the TPF 403, it may also include the relevant information for selecting the charging rule provided by the AF 401, if it is online For billing, there may also be information from the OCS, select the appropriate billing rule, and then send the selected billing rule to V-CRF 404.
  • Step B4 After receiving the charging rules provided by H-CRF 411, V-CRF 404 may further modify the charging rules provided by H-CRF 411 according to the charging policy of VPLMN 40 to generate new charging rules. Then it sends a charging rule to TPF 403. TPF 403 performs packet data filtering on the corresponding packet data stream according to the charging rules provided by V-CRF 404 6 and billing information collection.
  • Step B5 After AF 401 receives the packet data service request sent by the terminal, and determines that the PLMN to which the terminal belongs is not PLMN 40 according to the terminal identifier, it sends a pre-configured V-CRF 402 for proxy CRF for selection charging Application / business related information of the rule.
  • Step B6 After receiving the application / service related information, the V-CRF 402 determines that the PLMN to which the terminal belongs is PLMN 41 according to the terminal identity, and then forwards the application / service related information for selecting the charging rule to the H-CRF 411.
  • Step B7 After receiving the application / service related information provided by the AF 401, the H-CRF 411 selects an appropriate charging rule according to the application / service related information, and then sends the selected charging rule to the V-CRF 404.
  • Step B8 After receiving the charging rules provided by H-CRF 411, V-CRF 404 may further modify the charging rules provided by H-CRF 411 according to the charging policy of VPLMN 40 to generate new charging rules. Then it sends a charging rule to TPF 403. TPF 403 performs packet data filtering and billing information collection on the corresponding packet data stream according to the charging rules provided by V-CRF 404.
  • the processing process is the same as the above processing process, and details are not described herein again.
  • FIG. 5 is a schematic diagram of implementing roaming charging in Embodiment 3.
  • the terminal is used.
  • the TPF 503 and AF 501 in VPLMN 50 are configured with V-CRF 504 as a service for terminals belonging to other PLMNs.
  • Proxy CRF configure V-CRF 502 for AF 501 as a proxy CRF that serves terminals belonging to other PLMNs.
  • H-CRF 511 in HPLMN 51 such as direct connection or G-CRF connection.
  • the specific process of implementing roaming charging includes the following steps:
  • Step CI After the TPF 503 receives a bearer establishment request initiated by the terminal from the bearer layer, It is determined according to the terminal identity that the PLMN to which the terminal belongs is not PLMN 50, and the V-CRF 504 configured as a proxy CRF is requested for a charging rule, and related information for selecting a charging rule is provided, such as bearer-related information.
  • Step C2 After the V-CRF 504 receives the charging rule request from the TPF 502, it determines that the PLMN to which the terminal belongs is PLMN 51 according to the terminal identification. Then, the V-CRF 504 forwards the charging rule request to the H-CRF 511, and provides a method for selecting a meter. Information about fee rules.
  • Step C3 After the H-CRF 511 receives the charging rule request, according to the relevant information for selecting the charging rule provided by the TPF 503, it may also include the relevant information for selecting the charging provided by the AF 501. If the relevant information of the rule is For online charging, there may also be information from the OCS, select the appropriate charging rule, and then send the selected charging rule to the V-CRF 504.
  • Step C4 After receiving the charging rules provided by H-CRF 511, V-CRF 504 may further modify the charging rules provided by H-CRF 511 according to the charging policy of VPLMN 50. Generate new charging Rule, and then send a charging rule to TPF 503. TPF 503 performs packet data filtering and billing information collection on the corresponding packet data stream according to the charging rules provided by V-CRF 504.
  • Step C5 AF 501 receives the packet data service request sent by the terminal, and determines that the PLMN to which the terminal belongs is not PLMN 50 according to the terminal.
  • the identifier is sent to V-CRF 502 configured for proxy CRF in advance for selection.
  • Application / service related information of charging rules are sent to V-CRF 502 configured for proxy CRF in advance for selection.
  • Step C6 After receiving the application / service related information, the V-CRF 502 determines that the PLMN to which the terminal belongs is HPLMN 51 according to the terminal identification, and then forwards the application / service related information for selecting the charging rule to the H-CRF 511.
  • Step C7 After receiving the application / service related information provided by the AF 501, the H-CRF 511 selects an appropriate charging rule according to the application / service related information, and then sends the selected charging rule to the V-CRF 504.
  • Step C8 After receiving the charging rules provided by H-CRF 511, V-CRF 504 may The charging policy of the VPLMN 50 modifies the charging rules provided by the H-CRF 511 accordingly to generate new charging rules, and then sends the charging rules to the TPF 503. TPF 503 performs packet data filtering and billing information collection on the corresponding packet data stream according to the charging rules provided by VC F. 504.
  • Step C9 If the bearer has been established before the terminal sends a packet data service request to the AF 501, when the H-CRP 511 receives the application / service related information provided by the AF 501, the V-CRF corresponding to the TPF 503 has been known Therefore, the V-CRF 502 can provide the V-CRF 504 address information to the AF 501 through the V-CRF 502, and notify the AF 501 to perform the subsequent charging rule selection by the V-CRF 504.
  • Step CIO After the AF 501 receives the V-CRF 504 address information forwarded by the V-CRF 502, when the AF 501 receives a new packet data service request sent by the terminal, it directly sends the V-CRF 504 address information to the V-CRF 504 sends application / service related information.
  • the V-CRF 504 selects an appropriate charging rule based on the application / service related information provided by the AF 501, and then sends the charging rule to the TPF 503.
  • the TPF 503 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by the V-CRF 504.
  • the processing process is the same as the above processing process, and details are not described herein again.
  • Fig. 6 is a schematic diagram of implementing roaming charging in the fourth embodiment.
  • the terminal uses TPF 612 in HPLMN 61 and AF 602 in VPLMN 60, and configures V-CRF 601 for AF 602 as A proxy CRF belonging to a terminal that provides services to other PLMNs, according to the agreement between VPLMN 60 and HPLMN 61, there is a connection relationship between V-CRF 601 in VPLMN 60 and H-CRF 611 in HPLMN 61, such as direct connection or
  • the specific process of implementing roaming charging through 'G-CRF connection includes the following steps:
  • Step D1 After the TPF 612 receives a bearer establishment request from the bearer layer and is initiated by the terminal, it determines that the PLMN to which the terminal belongs is PLMN 61 according to the terminal identity. In the HPLMN 61, therefore, the TPF 612 directly requests the charging rule from the H-CRF 611, and provides related information for selecting the charging rule, such as information related to the bearer.
  • Step D2 After the H-CRF 611 receives the charging rule request, according to the relevant information for selecting the charging rule provided by the TPF 612, it may also include the relevant information for selecting the charging rule provided by the AF 602, if it is online For billing, there may also be information from the OCS, select the appropriate charging rule, and return the selected charging rule to the TPF 612.
  • the TPF 612 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by the H-CRF 611.
  • Step D3 After AF 602 receives the packet data service request sent by the terminal, and determines that the PLMN to which the terminal belongs is not PLMN 60 according to the terminal identifier, it sends a pre-configured V-CRF 601 for proxy CRF to select the meter. Application of fee rules / business related information.
  • Step D4 After receiving the application / service related information, the V-CRF 601 determines that the PLMN to which the terminal belongs is PLMN 61 according to the terminal identity, and then forwards the application / service related information for selecting the charging rule to the H-CRF 611.
  • Step D5 After receiving the application / service related information provided by the AF 602, the H-CRF 611 selects an appropriate charging rule according to the application / service related information, and then sends the selected 'charging rule' to the TPF 612.
  • the TPF 612 performs packet data filtering and charging information collection on the corresponding packet data flow according to the charging rules provided by the H-CRF 611.
  • the processing process is the same as the above processing process, and details are not described herein again.
  • the TPF is the GGSN.
  • AFs on the same network can be identified by a network access point (APN, Access Point Name). That is, the GGSN as the TPF can be identified by the bearer layer.
  • the obtained APN is addressed to an AF, so according to the APN's attribution and configuration, the operator can implement TPF selection to an AF that uses the currently established bearer to transmit service data streams. Further, in order to realize that the TPF and AF can select the same CRF, or use the concept of APN, the operator plans a CRF to serve one or several APN domains.
  • the TPF can determine a CRF based on the obtained APN,
  • the AF in the network where the APN is located also accesses this CRF according to the operator's configuration, so that the AF and TPF in the same network select the CRF that selects the same proxy.
  • the APN described above can be regarded as a network access point. Therefore, this selection method can also be used in other types of networks.
  • APN is a network access point used in other networks, such as a network access identifier. (NAI, Network Access Identifier).
  • This method of configuring TPF and AF addressing to the same CRF by configuring APN can be used alone or in combination with the previous terminal identification.
  • a CRF may be further determined in conjunction with the terminal identifier.
  • TPF and AF will choose the same network, so only the case where AF and TPF are in the same network is analyzed here, but it does not represent AF and The situation where TPF is located on different networks is not supported.
  • the first processing method is: Both AF and TPF are located in the PLMN currently visited by the terminal.
  • a CRF is selected according to the APN.
  • the PLMN where the TPF is located that is, the terminal's current A CRF in the visited PLMN.
  • AF uses the service data flow-based charging to contact a specified CRF during the session establishment process.
  • the CRF selected by the TPF according to the APN is selected. The rest of the process is similar to the previous one. .
  • the second processing method is: Both AF and TPF are located in the PLMN to which the terminal belongs.
  • a CRF is selected according to the APN.
  • the PLMN where the TPF is located that is, the PLMN to which the terminal belongs is selected.
  • One of the CRFs. AF in During the establishment of the session, according to the operator's configuration, when using the charging based on the service data flow, the specified CRF is contacted. At this time, the CRF selected by the TPF according to the APN is selected. The rest of the process is similar to the previous one.
  • the third processing method is: Both AF and TPF are located in the PLMN currently visited by the terminal, and the TPF selects a CRF according to the APN when the bearer is established.
  • the operator's configuration one of the PLMNs to which the terminal belongs is selected. CRF.
  • the AF finds that the serviced terminal is not the terminal of the own PLMN according to the terminal identification, and then according to the operator's configuration and terminal identification, when using service data flow-based charging, finds the PLMN to which the terminal belongs, and the It belongs to a CRF contact designated by the PLMN.
  • the CRF selected by the TPF according to the APN is selected.
  • the rest of the process is similar to the previous one.
  • FIG. 7 is a schematic diagram of implementing roaming charging in Embodiment 5.
  • the terminal uses TPF 703 and AF 701 in VPLMN 70, and configures the same V-CRF 702 for TPF 703 and AF 701 as A proxy CRF that provides services to terminals belonging to other PLMNs.
  • V-CRF 702 in VPLMN 70 and H-CRF 711 in HPLMN 71 there is a connection relationship between V-CRF 702 in VPLMN 70 and H-CRF 711 in HPLMN 71, such as direct connection or
  • the specific process of implementing roaming charging through G-CRF connection includes the following steps:
  • Step E1 After receiving the bearer establishment request initiated by the terminal from the bearer layer, the TPF 703 determines that the home PLMN of the terminal is not the PLMN 70 according to the terminal identity. Then, in a GPRS network, the TPF 703 can forward the The V-CR 702 configured for proxy CRF requests a charging rule, and provides related information for selecting a charging rule, such as information related to a bearer.
  • Step E2 After receiving the charging rule request from TPF 703, V-CRF 702 determines that the PLMN to which the terminal belongs is PLMN 71 according to the terminal identity, and then forwards the charging rule request to H-CRF 711, and provides the method for selecting the charging rule. Related information.
  • Step E3 After receiving the charging rule request from H-CRF 711, according to the application provided by TPF 703
  • the relevant information for selecting the charging rule may also include the relevant information provided by the AF 701 for selecting the charging rule. If it is online charging, there may also be information from the OCS, select the appropriate charging rule, and then V-CRF 702 sends the selected charging rule.
  • Step E4 After receiving the charging rules provided by H-CRF 711, V-CRF 702 may further modify the charging rules provided by H-CRF 711 according to the charging policy of VPLMN 70 to generate a new charging rule. Then the charging rules are sent to the TPF 703. The TPF 703 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by V-CRF 704.
  • Step E5 The AF 701 receives the packet data service request sent by the terminal, and determines that the PLMN to which the terminal belongs is not the PLMN 70 according to the terminal identifier. Then, in a GPRS network, the AF can send the pre-configured V-CRF 702, which acts as a proxy CRF, sends application / service related information for selecting a charging rule.
  • V-CRF 702 acts as a proxy CRF
  • Step E6 After receiving the application / service related information, V-CRF 702 determines it based on the terminal identity.
  • the PLMN to which the terminal belongs is HPLMN 71, and then forwards the application / service related information used to select the charging rule to H-CRF 711. .
  • Step E7 After receiving the application / service related information provided by the AF 701, the H-CRF 711 selects an appropriate charging rule according to the application / service related information, and then sends the selected charging rule to the V-CRF 702.
  • Step E8 After receiving the charging rules provided by H-CRF 711, V-CRF 702 may further modify the charging rules provided by H-CRF 711 according to the charging policy of VPLMN 70 to generate new charging rules. Then send a charging rule to TPF 703. TPF 703 performs packet data filtering and charging information collection on the corresponding packet data stream according to the charging rules provided by V-CRF 702.
  • Determining the home network of the terminal as described above may not be: the terminal identity cannot be identified; or the PLMN to which the terminal belongs is obtained according to the MNC / MCC field in the terminal's MSISDN; or based on the common session location based on the start session protocol (SIP) (URL), such as user@networkl.com, knowing that the PLMN to which the terminal belongs is network 1, and so on.
  • SIP start session protocol
  • the different PLMNs described above can be PLMNs covering different areas under the same system, such as a Code Division Multiple Access (CDMA) communication network covering Beijing and a CDMA communication network covering Shanghai. They can also cover the same area under different systems.
  • PLMN such as CDMA communication network and Wideband Code Division Multiple Access (WCDMA) communication network covering Guangdong. It can also cover PLMN in different regions under different standards, such as WCDMA communication network covering Beijing and CDMA communication covering Shanghai.
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access

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Description

6 一种实现漫游计费的方法及系统
技术领域
本发明涉及计费领域, 特别是指一种实现分组数据业务漫游计费的 方法及系统。 发明背景
随着分组数据业务的应用逐渐广泛, 如何准确合理地对分组数据业 务进行计费, 已成为运营商普遍关注的问题。
当前的通用分组无线业务 ( GPRS, General Packet Radio Service )计 费系统中, 针对终端的业务数据流只能识别到接入点名称(APN )和分. 组数据协议上下文(PDP Context, Packet Data Protocol Context )这一级 别, 因此只能根据 APN和 PDP Context进行计费。然而,在实际应用中, 多个并行的业务数据流很可能会通过同一个 PDP Context承载, 而不同 业务则可能需要使用不同的计费方式进行计费, 当前的 GPRS计费系统' 无法满足这一需求。例如,终端同时进行流媒体业务和多媒体消息业务, 这两个业务同时承载于同一 APN和 PDP Context中,但应用于这两个业 务的计费规则是不同的, 如流媒体业务需要根据终端的数据流量或该业 务进行的时间长度进行计费, 多媒体消息业务需要根据事件进行计费, · 该事件可为发送或接收一条多媒体消息。 为了对不同类型的分组数据业 务使用相同的计费方案, 需要对当前的 GPRS计费系统提出一种新的计 费方式, 采用一种通用的基于数据流的计费机制。
针对上述情况, 第三代合作伙伴计划 (3GPP, The 3rd Generation Partnership Project ) 目前正在讨论如何实现基于网际协议 ( IP )数据流 的计费 (FBC, Flow Based Charging )0 对于一个分组数据业务而言, 终 端使用该业务时所消耗的数据量称为业务数据流(Service Data Flow ), 业务数据流是多个 IP数据流组成的集合。 在一个 APN和 PDP Context 中可承载多个不同的分組数据业务。这样,基于 IP数据流的计费粒度要 远远小于基于一个 PDP Context的计费粒度, 基于 IP数据流的计费能够 更真实地反映某个业务数据流对资源的占用情况, 因此,基于 IP数据流 的计费能够为运营商或业务提供者提供更为丰富的计费手段。
3GPP中对 FBC的系统结构、 功能要求以及消息交互流程等方面均 进行了描述, 支持在线计费的 FBC系统结构如图 1A所示, 基于移动网 络增强逻辑的客户化应用 ( CAMEL, Customised Application for Mobile Network Enhanced Logic ) 的业务控制点 ( SCP, Service Control Point ) 101和基于业务数据流计费的信用控制功能实体(CC, Service Data Flow Based Credit Control Function ) 102组成了在线计费系统( OCS , Online Charging System ) 106。 CC 102通过 Ry接口与基于业务数据流计费的计 费规则功能实体 ( CRF, Service Data Flow Based Charging Rule Function ) 103 相连, CRF 103 通过 Rx接口与应用功能实体(AF, Application Function ) 104相连, CRF 103通 i± Gx接口与传输面功能实体(TPF, Traffic Plane Function ) 105相连, CC 102通过 Gy接口与 TPF 105相连。
支持离线计费的 FBC系统结构如图 IB所示, CRF 103通过 Rx接 口与 AF 104相连, CRF 103通过 Gx接口与 TPF 105相连, TPF 105通 过 Gz接口分别与计费网关功能实体( CGF , Charging Gateway Function ) 107和计费采集功能实体(CCF, Charging Collection Function ) 108相连。
下面才 据目前 3GPP对于实现 FBC功能实体的划分, 对各功能实体 实现的功能进行描述。
TPF 105是承载分组数据流的功能实体, 能够对属于不同分组数据 业务流程的分组数据包进行区分, 用于收集离线计费信息和执行在线信' 用控制, 当分组数据流的承载发生改变时, 如承载建立、 承载修改、 承 载删除等过程中, TPF 105通过 Gx接口向 CRF 103请求计费规则, 在 请求计费规则的消息中可携带有终端的相关信息、 承载特性以及与网络 相关的信息等, 其中终端的相关信息可为移动台综合业务服务网国际号 码(MSISDN )、 国际移动用户标识(IMSI )等, 与承载特性相关的信息 可为服务质量 (QoS ) 参数, 与网络相关的信息可为移动网络编码 ( MNC;)、 移动国家码(MCC )等。 TPF 105根据 CRF 103返回的计费 规则, 在相应的分组数据流上执行分组数据过滤和计费信息收集。 一个 TPF 105可由一个或多个 CRF 103提供服务, 当有多个 CRF 103为同一 TPF 105提供服务时, 可根据终端标识选择相应的 CRF 103与其进行交 互。 TPF 105支持预先定义的计费规则以及预先定义的分组数据流过滤' 器。
CRF 103是存储计费规则的功能实体,支持动态和静态的计费规则。 动态计费规则是指根据分组数据业务的计费策略实时生成的、 应用于相 应分组数据流的计费规则, 静态计费规则是指在终端使用分组数据业务 ' 过程中一成不变的计费规则, 静态计费规则可根据终端使用分组数据业 务过程中的一些事件被动态地激活。 CRF 103可根据 TPF 105、 AF 104 或 OCS 106提供的信息, 选择适当的计费规则, 在 TPF 105向其请求计 费规则或特定事件发生时, CRF 103将选定的计费规则提供给 TPF 105。 ' 一个 CRF 103可对应多个 TPF 105。
AF 104代表所有与应用相关的功能实体, AF 104可为运营商自身的 网络实体, 也可为第三方业务提供商的网络实体。 AF 104向 CRF 103 提供相应信息,使得 CRF 103能够根据该信息选择或配置相应的计费规' 则, AF 104向 CRF 103提供的信息包括: 分組数据流的标识信息、 用于 选择计费规则的信息、 应用 /业务标识、 应用 /业务计费规则触发事件、 分组数据流的类型、 分组数据流的速率等信息。 分組数据流的标识信息 可以通配; 分组数据流的类型可为视频、 音频等, 分组数据流的类型为 可选参数, 分组数据流的速率也为可选参数。 一个 AF 104可对应于多 个 CRF 103, 当多个 CRF 103对应于同一 AF 104时, 可根据终端标识 选择相应的 CRJF 103与 AF 104进行交互。
CC 102是执行信用控制的功能实体, 仅应用于在线计费系统, 可通 过在现有的 OCS 106中增加新的功能来实现。 OCS 106中的 CC 102可 通过 Ry接口向 CRF 103提供用于选择计费规则的相关信息。
CGF 107/CCF 108是应用于离线计费系统的功能实体, 可沿用现有' GPRS计费系统中的实现方式。
如果承载网络为 GPRS网络, 则 TPF 105为网关通用分组无线业务 支持节点 (GGSN, Gateway GPRS Support Node ), AF 104为分组数据 网络(PDN, Packet Data Network ) 中的一个业务网关或业务服务器, 当 IP多媒体子系统(IMS, IP Multimedia Subsystem )承载于 GPRS网 络之上时, AF 104为代理呼叫会话控制功能实体(P-CSCF, Proxy Call Session Control Function ), CRF 103为新增的逻辑实体。
上述计费结构及各功能实体实现的功能同样可应用于 3GPP2的网络 架构中。
在现有 FBC机制的计费方法中, TPF是通过终端标识选择为自身服 务的 CRF的, AF也是通过终端标识来寻址到为该终端服务的 CRF的 , 由于 TPF是属于承载层的功能实体, AF是属于应用层的功能实体, 而' 同一终端在不同层面上可能具有不同的标识, 因此, 以上所述的 AF处 的终端标识和 TPF处的终端标识可能相同也可能不同,通过网络规划和 配置, 可保证根据同一终端在不同层面的不同标识寻址到同一 CRF。
才艮据现有 FBC机制的寻址方式, 只有在 TPF、 CRF以及 AF位于同一 公用陆地移动通信网络(PL丽, Publ ic Land Mobi le Network )时, TPF、 AF才能针对同一终端寻址到一个 CRF, 实现 CRF的正确寻址。 如果终端 使用的 TPF位于该终端归属的 PLMN以外的其他 PLMN时, TPF如何根据 终端标识寻址到正确的 CRF, 得到所需的计费规则, 进而实现基于分组 数据流的计费, 是目前 FBC机制中仍未解决的问题。 另外, 当 AF和 CRF 位于不同 PLMN时, AF也无法通过现有的寻址方式, 根据终端标识寻址 到当前正在为相应终端服务的 CRF。
发明内容
有鉴于此, 本发明的一个目的在于提供一种实现漫游计费的方法, 本发明的另一目的在于提供一种实现漫游计费的系统, 在终端使用当前 拜访的 PLMN中的承载资源或分组数据业务时, 实现对终端的计费。
为了达到上述目的, 本发明提供了一种实现漫游计费的方法, 该方 法包含以下步骤:
A、在公用陆地移动通信网络 PLMN中配置用于与其他 PLMN中计 费规则功能实体 CRF交互计费相关信息的代理 CR ;
B、 终端使用当前拜访的 PLMN中的承载资源或分组数据业务时, 通过终端当前拜访的 PLMN中的代理 CRF向终端归属的 CRF提供用于 选择计费规则的信息;
C、 终端归属的 CRF根据收到的信息选择计费规则;
D、 终端归属的 CRF向当前为终端提供服务的传输面功能实体 TPF 提供计费规则。
所述步骤 A为: 在终端当前拜访的 PLMN中为 TPF配置用于与其 他 PLMN中 CRF交互计费相关信息的代理 CRF; 所述步骤 B为: 终端 当前拜访的 PLMN中的 TPF收到终端发送的承载请求后, 向为其配置 的代理 CRF请求计费规则,并提供用于选择计费规则的信息,代理 CR 向终端归属的 CRF转发用于选择计费规则的信息。
所述步骤 D之后进一步包括:
El、 终端归属的 PLMN中的应用功能实体 AF收到终端发送的分组 数据业务请求后, 向终端归属的 CRF提供用于选择计费规则的信息; E2、 终端归属的 CRF根据收到的信息选择计费规则;
E3、 终端归属的 CRF向当前为终端提供服务的 TPF提供计费规则。 所述步骤 A进一步包括: 在终端当前拜访的 PLMN中为 TPF和 AF 分别配置用于与其他 PLMN中 CRF交互计费相关信息的代理 CRF; 如. 果终端向当前拜访的 PLMN中的 TPF发送承载请求, 所述步骤 B为: 终端当前拜访的 PLMN中的 TPF收到终端发送的承载请求后, 向为其 配置的代理 CRF请求计费规则,并提供用于选择计费规则的信息,代理 CRP向终端归属的 CRF转发用于选择计费规则的信息; 如果终端向当. 前拜访的 PLMN中的 AF发送分组数据业务请求, 则所述步骤 B为: 终 端当前拜访的 PLMN中的 AF收到终端发送的分组数据业务请求后, 向 为其配置的代理 CRF提供用于选择计费规则的信息, 代理 CRF向终端 归属的 CRF转发用于选择计费规则的信息。
步骤 A中所述为 TPF配置的代理 CR 与为 AF配置的代理 CRF相 同。
如果所述为 TPF配置的代理 CRF与为 AF配置的代理 CRF不同, 则所述代理 CRF向终端归属的 CRF转发用于选择计费规则的信息之后, 进一步包括: 终端归属的 CRF通过为 AF配置的代理 CRP, 向 AF提供 为 TPF配置的代理 CRF的地址信息。
所述步骤 A为: 在终端当前拜访的 PLMN中为 AF配置用于与其他 PLMN中 CRF交互计费相关信息的代理 CRF; 所述步骤 B为: 终端当 前拜访的 PLMN中的 AF收到终端发送的分组数据业务请求后, 向为其 配置的代理 CRF提供用于选择计费规则的信息, 代理 CRF向终端归属 的 CRF转发用于选择计费规则的信息。
该方法进一步包括:终端归属的 PLMN中的 TPF收到终端发送的承 载请求, TPF向终端归属的 CRF请求计费规则, 并提供用于选择计费规 则的信息; 终端归属的 CRF才艮据收到的信息选择计费规则; 终端归属的 CRF向当前为终端提供服务的 TPF提供计费规则。
所述向 CRF提供用于选择计费规则的信息之前, 进一步包括: 根据 终端标识判断终端归属的 PLMN是否为终端当前拜访的 PLMN,如果是, 则向终端归属的 CRF提供用于选择计费规则的信息; 否则, 向为 AF配 置的代理 CRF提供用于选择计费规则的信息。
所述向 CRF请求计费规则之前, 进一步包括: 根据终端标识判断终 端归属的 PLMN是否为终端当前拜访的 PLMN, 如果是, 则向终端归属 的 CRF请求计费规则; 否则 , 向为其配置的代理 CRF请求计费规则。
所述向配置的代理 CRF提供用于选择计费规则的信息包括:根据终 . 端标识或网络接入点信息查找到配置的代理 CRF, 然后向其提供用于选 择计费规则的信息。
所述代理 CRF向终端归属的 CRF转发用于选择计费规则的信息, 为: 代理 CRF根据终端标识查找到终端归属的 CRF, 然后向其转发用' 于选择计费规则的信息。
所述步骤 D包括以下步驟:
Dl、 终端归属的 CRF向为 TPF配置的代理 CRF发送选定的计费规 D2、 该代理 CRF向 TPF发送计费规则。
所述步骤 D2之前进一步包括:代理 CRF根据终端当前拜访的 PLMN N2005/000606 的计费策略,对终端归属的 CRF提供的计费规则进行修改,生成新的计. 费规则。
所述步骤 D之后进一步包括: TPF根据计费规则收集计费信息, 对 终端进行计费。
本发明还公开了一种实现漫游计费的系统, 该系统包括: TPF、 终. 端归属的 PLMN中的终端归属的 CRP, 终端归属的 PLMN以外的其他 PLMN中的代理 CRF, 终端归属的 CRF与代理 CRF相连接, 用于传输 用于选择计费规则的信息; TPF与终端归属的 CRF或代理 CRF相连, 用于传输计费规则请求及选定的计费规则。
该系统进一步包括: AF, 与终端归属的 CRF或代理 CRF相连, 用 于传输用于选择计费规则的信息。
所述终端归属的 CRF与代理 CRF通过接口直接相连。
所述终端归属的 CRF与代理 CRF通过网关 CRF相连。
根据本发明提出的方案, 终端漫游时使用 VPLMN中的承载资源或 分组数据业务, VPLMN中的 TPF或 AF在寻址时, 首先确定终端标识 为非本网络分配的标识后,直接选择预先为其配置的一个 V-CRF为该终 端服务, 向该 V-CRF提供用于选择计费规则的相关信息, 然后 V-CRF ' 向 H-CRF发送收到的用于选择计费规则的相关信息, 以使 H-CRF能够 根据这些信息确定当前的计费规则,解决了终端漫游时 FBC机制中根据 业务数据流进行计费过程中各个功能实体之间的寻址问题。
另外, 通过本发明提出的方案, 终端使用 VPLMN的承载资源或者分' 组数据业务时, 只要 VPLMN中具有支持 FBC机制的功能实体, 就能够实 现基于 FBC的计费, 从而在终端漫游时能够继续使用多种多样的计费手 段, 实施各种灵活的计费策略, 实现对终端完善、 合理地计费, 从而吸 引终端的用户更多地使用分組数据业务; 即使 VPLMN不支持基于 FBC机 ' 制的计费, 本发明提出的方案也不会对现有 GPRS计费机制产生影响, 具有良好的兼容性。 附图简要说明
图 1A为在线计费的 FBC系统结构示意图;
图 1B为离线计费的 FBC系统结构示意图;
图 2为本发明中实现漫游计费示意图;
图 3为实施例一实现漫游计费示意图;
图 4为实施例二实现漫游计费示意图;
图 5为实施例三实现漫游计费示意图;
图 6为实施例四实现漫游计费示意图;
图 7为实施例五实现漫游计费示意图。 实施本发明的方式
下面结合附图对本发明进行详细描述。
由于 CRF在 FBC机制中为存储计费规则的功能实体, 计费规则的 制定和选择都是需要运营商和业务提供商预先协商好的, 而且根据终端 用户的类型不同, 如预付费用户和后付费用户, 在使用同一分组数据业 务时, CRF为各终端选择的计费规则也可能不同, 因此, CR 是具有归 属概念的功能实体, 一些与终端及计费模型相关的信息需要通过与终端 归属的 CRF的交互才能获取。 这样, 当终端漫游时, 根据运营商之间的 协定, 终端当前拜访的 PLMN ( VPLMN )需要确定一个拜访 CRF为该 漫游终端提供服务,并且,拜访 CRF与归属 CRF相连接,使得拜访 CRF 与归属 CRF之间能够交互用于选择计费规则的相关信息。
本发明中, 针对终端而言, 将位于不同 PLMN中的 CRF区分为终 端归属的 CRF ( H-CRF )和终端当前拜访的 CRF ( V-CRF ), H-CRF为 存储终端信息及计费模型相关信息的 CRF, V-CRF与 H-CRF相连接, V-CRF位于终端当前拜访的 PLMN中, H-CRF位于终端归属的 PLMN ( HPLMN )。 如果终端漫游, 且终端使用 VPLMN中的承载资源或分组 数据业务, 即 VPLMN与 HPLMN为不同的 PLMN, VPLMN中的 TPF 或 AF在寻址时, 首先确定终端标识为非本网络分配的标识后, 直接选 择预先为其配置的 V-CRF 为该终端服务, 配置原则可以是基于终端标 识, 基于网络接入点信息、 如 APN信息, 或者基于其他相关信息; 然 后 TPF或 AF向该 V-CRF提供用于选择计费规则的相关信息, V-CRF 向 H-CRF发送收到的用于选择计费规则的相关信息, 以使 H-CRF能够 根据这些信息确定当前的计费规则。 为 VPLMN中 AF配置的 V-CRF与 为 TPF配置的 V-CRF可相同, 也可不相同。
在向 TPF下发计费规则的过程中, 根据不同 PLMN之间的协定, V-CRF可与 H-CRF进行计费规则的协商,根据 H-CRF的计费规则指示, 并根据 VPLMN预先设定的计费规则, 确定适当的计费规则并下发给 TPF, TPF根据 V-CRF提供的计费规则收集计费信息。
图 2为本发明中实现漫游计费示意图, 如图 2所示, AF 201和 TPF 203位于 VPLMN20, 在 VPLMN 20中, 为 TPF 203配置 V-CRF 204作 为为归属于其他 PLMN的终端提供服务的代理 CRF, 为 AF 201 配置 V-CRF 201 作为为归属于其他 PLMN 的终端提供服务的代理 CRF。
V-CRF 201和 V-CRF 204可为相同的 CRF也可为不同的 CRF。 以上所 述的代理 CRF、 如 V-CRF 201和 V-CRF 204, 在作为与其他 PLMN中 CRF进行交互的代理 CRF的同时, 也可作为为归属于该 VPLMN 20的 终端提供服务的 CRF。 终端为 HPLMN 21 中的归属终端, HPLMN 21 . 中的 H-CRF 211中存储有终端信息及计费模型相关信息。 终端当前位于 VPLMN 20中, 使用 VPLMN 20中的 TPF 203, TPF 203根据终端标识确定终端的归属 PLMN不是 PLMN 20后, 向 V-CRF 204发送用于选择计费规则的相关信息,该信息可为与承载相关的信息。 根据 VPLMN 20与 HPLMN 21之间的协定, V-CRF 204 据终端标识确 定终端的 HPLMN 21 , 然后 V-CRF 204向 HPLMN 21中的 H-CRF 211 转发用于选择计费规则的相关信息。
终端需要使用 VPLMN 20中的 AF 201时,向 AF 201发送分组数据 业务请求, AF 201接收分組数据业务请求, 并根据终端标识确定终端的 归属 PLMN不是 PLMN 20后, 向 V-CRF 202发送用于选择计费规则的 相关信息,该信息可为与应用层相关的信息。根据 VPLMN 20与 HPLMN 21之间的协定, V-CRF 202根据终端标识确定终端的 HPLMN 21 , 然后
终端标识中通常包含有其归属 PLMN 的相关信息, 因此, TPF或. AF可根据终端标识确定该终端是否归属于一个 PLMN, V-CRF也可根 据终端标识确定终端的 HPLMN。
H-CRF 211收到 V-CRF 204、或 V-CRF 202、或 V-CRF 204和 V-CRF
202转发的用于选择计费规则的相关信息后, 如果为在线计费, 还可能. 会有来自 OCS的信息, H-CRF 211根据上述信息选择适当的计费规则, 然后向 V-CRF 204发送选定的计费规则。 V-CRF 204收到 H-CRF 211提 供的计费规则后, 可进一步根据 VPLMN 20的计费策略, 对 H-CRF 211 提供的计费规则进行相应修改生成新的计费规则, 然后向 TPF 203发送. 该计费规则。 TPF 203根据 V-CRF 204提供的计费规则, 在相应的分组 数据流上执行分组数据过滤和计费信息收集。
进一步地,如果终端向 AF发起业务请求是在承载建立之后进行的, 那么当 H-CRF 211收到 V-CRF 202转发的应用 /业务相关信息时, 如果 H-CRF 211已经获知 TPF 203当前使用的是 VPLMN 20中的 V-CRP 204, 这样, 根据不同 PLMN之间的协定及具体的网络实施情况, H-CRF 211 也可将 V-CRF 204的地址信息通过 V-CRJF 202转发给 AP。 这样, 后续 的计费规则选择就可由 V-CRF 204来执行, V-CRF 204可根据收到的来 自 AF 201以及 TPF 203的用于选择计费规则的相关信息, 选择适当的 计费规则, 而不必每次都向 H-CRF 211请求计费规则。
V-CRF 202或 V-CRF 204可直接通过接口与 H-CRF 211相连, 该接 口用于传输用于选择计费规则的相关信息; 也可分别在 VPLMN 20和 HPLMN 21中设置网关 CRF ( G-CRF ), 然后 V-CRF 202和 V-CRF 204 与 VPLMN 20中的 G-CRJF相连, H-CR 211与 HPLMN 21中的 G-CRF 相连, 最后 VPLMN 20中的 G-CRF与 HPLMN 21中的 G-CRF相连。
在终端使用分组数据业务的实际情况中, 终端可使用 VPLMN中的 TPF, HPLMN中的 AF; 也可使用 VPLMN中的 TPF和 AF; 还可使用 HPLMN中的 TPF, VPLMN中的 AF, 以下对上述各种情况进行详细描 述
图 3为实施例一实现漫游计费示意图, 如图 3所示, 本实施例中, 终端使用 VPLMN 30中的 TPF 302> HPLMN 31中的 AF 312,为 TPF 302 配置 V-CRF 301作为为归属于其他 PLMN的终端提供服务的代理 CRF, 根据 VPLMN 30与 HPLMN 31之间的协定, VPLMN 30中的 V-CRF 301 . 与 HPLMN 31中的 H-CRF 311之间存在连接关系, 如直接相连或通过 G-CRF相连, 实现漫游计费的具体过程包括以下步驟:
步骤 A1: TPF 302收到来自承载层的、终端发起的承载建立请求后, 根据终端标识确定终端归属的 PLMN不是 PLMN 30, 向预先为其配置. 的用于作代理 CRF的 V-CRF 301请求计费规则, 同时提供用于选择计 费规则的相关信息, 如与承载相关的信息。 如果 TPF 302确定终端归属 的 PLMN为 PLMN 30, 则直接向终端归属的 CRF请求计费规则。
步骤 A2: V-CRF 301收到 TPF 302的计费规则请求后, 根据终端标 识确定终端归属的 PLMN为 PLMN 31 , 然后向 H-CRF 311转发计费规 则请求, 并提供用于选择计费规则的相关信息。
步骤 A3: H-CRF 311收到计费规则请求后,根据 TPF 302提供的用 于选择计费规则的相关信息, 可能还包括 AF 312提供的用于选择计费 规则的相关信息, 如果为在线计费,还可能会有来自 OCS的信息, 选择 适当的计费规则, 然后向 V-CRF 301发送选定的计费规则。
步驟 A4: V-CRF 301收到 H-CRF 311提供的计费规则后,可进一步 根据 VPLMN 30的计费策略,对 H-CRF 311提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 302发送该计费规则。 TPF 302根据 V-CRF 301提供的计费规则, 在相应的分组数据流上执行分組数据过滤 和计费信息收集。
步骤 A5: AF 312接收终端发送的分组数据业务请求, 并根据终端 标识确定终端的归属 PLMN为 PLMN 31 , 由于 AF 312位于终端归属的 PLMN 31中, 因此, AF 312直接向 H-CRF 311发送用于选择计费规则 的应用 /业务相关信息。
步骤 A6: H-CRF 311收到 AF 312提供的应用 /业务相关信息后, 根 据应用 /业务相关信息选择适当的计费规则,然后向 V-CRF 301发送选定 的计费规则。
步骤 A7: V-CRF 301收到 H-CRF 311提供的计费规则后,可进一步 . 根据 VPLMN 30的计费策略,对 H-CRF 311提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 302发送计费规则。 TPF 302根据 V-CRP 301提供的计费规则, 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
当承载发生改变或终端使用新的分组数据业务时, 处理过程与上述 处理过程相同, 在此不再赘述。
图 4为实施例二实现漫游计费示意图, 如图 4所示, 本实施例中, 终端使用 VPLMN 40中的 TPF 403和 AP 401 ,为 TPF 403配置 V-CRF 404 作为为归属于其他 PLMN的终端提供服务的代理 CRF, 为 AF 401配置 V-CRF 402作为为归属于其他 PLMN的终端提供服务的代理 CRF,根据 VPLMN 40与 HPLMN 41之间的协定, VPLMN 40中的 V-CRF 402、 V-CRF 404与 HPLMN 41中的 H-CRF 411之间存在连接关系,如直接相 连或通过 G-CRF相连, 实现漫游计费的具体过程包括以下步骤:
步驟 Bl: TPF 403收到来自承载层的、终端发起的承载建立请求后, 根据终端标识确定终端的归属 PLMN不是 PLMN 40, 向预先为其配置 的用于作代理 CRF的 V-CRF 404请求计费规则, 同时提供用于选择计 费规则的相关信息, 如与承载相关的信息。
步骤 B2: V-CRF 404收到 TPF 302的计费规则请求后, 根据终端标 识确定终端归属的 PLMN为 PLMN 41 , 然后向 H-CRF 411转发计费规 则请求, 并提供用于选择计费规则的相关信息。
步骤 B3: H-CRF 411收到计費规则请求后, 根据 TPF 403提供的用 于选择计费规则的相关信息, 可能还包括 AF 401提供的用于选择计费 规则的相关信息, 如果为在线计费,还可能会有来自 OCS的信息, 选择. 适当的计费规则, 然后向 V-CRF 404发送选定的计费规则。
步驟 B4: V-CRF 404收到 H-CRF 411提供的计费规则后,可进一步 根据 VPLMN 40的计费策略,对 H-CRF 411提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 403 发送计费规则。 TPF 403 根据. V-CRF 404提供的计费规则, 在相应的分组数据流上执行分组数据过滤 6 和计费信息收集。
步骤 B5: AF 401接收终端发送的分组数据业务请求, 并根据终端 标识确定终端归属的 PLMN不是 PLMN 40后, 向预先为其配置的用于 作代理 CRF的 V-CRF 402发送用于选择计费规则的应用 /业务相关信息。
步骤 B6: V-CRF 402收到应用 /业务相关信息后, 根据终端标识确 定终端归属的 PLMN为 PLMN 41 , 然后向 H-CRF 411转发用于选择计 费规则的应用 /业务相关信息。
步骤 B7: H-CRF 411收到 AF 401提供的应用 /业务相关信息后, 根 据应用 /业务相关信息选择适当的计费规则,然后向 V-CRF 404发送选定 的计费规则。
步驟 B8: V-CRF 404收到 H-CRF 411提供的计费规则后,可进一步 根据 VPLMN 40的计费策略,对 H-CRF 411提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 403 发送计费规则。 TPF 403 根据 V-CRF 404提供的计费规则, 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
当承载发生改变或终端使用新的分组数据业务时, 处理过程与上述 处理过程相同, 在此不再赘述。
图 5 为实施例三实现漫游计费示意图, 如图 5 所示, 终端使用. VPLMN 50中的 TPF 503和 AF 501 ,为 TPF 503配置 V-CRF 504作为为 归属于其他 PLMN的终端提供服务的代理 CRF, 为 AF 501配置 V-CRF 502作为为归属于其他 PLMN的终端提供服务的代理 CRF,根据 VPLMN 50与 HPLMN 51之间的协定, VPLMN 50中的 V-CRF 502、 V-CRF 504 与 HPLMN 51中的 H-CRF 511之间存在连接关系, 如直接相连或通过 G-CRF相连, 实现漫游计费的具体过程包括以下步骤:
步骤 CI : TPF 503收到来自承载层的、终端发起的承载建立请求后, 根据终端标识确定终端归属的 PLMN不是 PLMN 50, 向预先为其配置 的用于作代理 CRF的 V-CRF 504请求计费规则, 同时提供用于选择计 费规则的相关信息, 如与承载相关的信息。
步驟 C2: V-CRF 504收到 TPF 502的计费规则请求后, 根据终端标. 识确定终端归属的 PLMN为 PLMN 51 , 然后向 H-CRF 511转发计费规 则请求, 并提供用于选择计费规则的相关信息。
步骤 C3: H-CRF 511收到计费规则请求后, 根据 TPF 503提供的用 于选择计费规则的相关信息, 可能还包括 AF 501提供的用于选择计费. 规则的相关信息, 如果为在线计费, 还可能会有来自 OCS的信息, 选择 适当的计费规则 , 然后向 V-CRF 504发送选定的计费规则。
步骤 C4: V-CRF 504收到 H-CRF 511提供的计费规则后,可进一步 根据 VPLMN 50的计费策略,对 H-CRF 511提供的计费规则进行相应修. 改生成新的计费规则, 然后向 TPF 503 发送计费规则。 TPF 503 根据 V-CRF 504提供的计费规则, 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
步驟 C5: AF 501接收终端发送的分组数据业务清求, 并根据终端. 标识确定终端归属的 PLMN不是 PLMN 50后, 向预先为其配置的用于 作代理 CRF的 V-CRF 502发送用于选择计费规则的应用 /业务相关信息。
步骤 C6: V-CRF 502收到应用 /业务相关信息后, 根据终端标识确 定终端归属的 PLMN为 HPLMN 51 ,然后向 H-CRF 511转发用于选择计 费规则的应用 /业务相关信息。
步骤 C7: H-CRF 511收到 AF 501提供的应用 /业务相关信息后, 根 据应用 /业务相关信息选择适当的计费规则,然后向 V-CRF 504发送选定 的计费规则。
步骤 C8: V-CRF 504收到 H-CRF 511提供的计费规则后, 可根据 VPLMN 50的计费策略,对 H-CRF 511提供的计费规则进行相应修改生 成新的计费规则, 然后向 TPF 503发送计费规则。 TPF 503根据 V-C F . 504提供的计费规则, 在相应的分组数据流上执行分组数据过滤和计费 信息收集。
步骤 C9: 如果承载在终端向 AF 501发送分组数据业务请求之前已 经建立起来了,在 H-CRP 511收到 AF 501提供的应用 /业务相关信息时, . 已经获知对应于 TPF 503的 V-CRF 504的地址信息,因此,可通过 V-CRF 502向 AF 501提供 V-CRF 504的地址信息, 通知 AF 501在后续的计费 规则选取由 V-CRF 504执行。
步骤 CIO: AF 501收到 V-CRF 502转发的 V-CRF 504地址信息后 , · AF 501收到终端发送的新的分组数据业务请求时, 直接根据 V-CRF 504 地址信息, 向 V-CRF 504发送应用 /业务相关信息。 V-CRF 504根据 AF 501提供的应用 /业务相关信息, 选择适当的计费规则, 然后向 TPF 503 发送计费规则。 TPF 503根据 V-CRF 504提供的计费规则, 在相应的分 · 组数据流上执行分组数据过滤和计费信息收集。
当承载发生改变或终端使用新的分组数据业务时, 处理过程与上述 处理过程相同, 在此不再赘述。
图 6为实施例四实现漫游计费示意图, 如图 6所示, 本实施例中, · 终端使用 HPLMN 61中的 TPF 612, VPLMN 60中的 AF 602,为 AF 602 配置 V-CRF 601作为为归属于其他 PLMN的终端提供服务的代理 CRF, 根据 VPLMN 60与 HPLMN 61之间的协定, VPLMN 60中的 V-CRF 601 与 HPLMN 61中的 H-CRF 611之间存在连接关系, 如直接相连或通过' G-CRF相连, 实现漫游计费的具体过程包括以下步骤:
步骤 Dl: TPF 612收到来自承载层的、终端发起的承载建立请求后, 根据终端标识确定终端归属的 PLMN为 PLMN 61 , 由于 TPF 612位于 HPLMN 61中, 因此, TPF 612直接向 H-CRF 611请求计费规则, 同时 提供用于选择计费规则的相关信息, 如与承载相关的信息。
步骤 D2: H-CRF 611收到计费规则请求后, 根据 TPF 612提供的用 于选择计费规则的相关信息, 可能还包括 AF 602提供的用于选择计费 规则的相关信息, 如果为在线计费,还可能会有来自 OCS的信息, 选择 适当的计费规则, 然后向 TPF 612返回选定的计费规则。 TPF 612根据 H-CRF 611提供的计费规则, 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
步骤 D3: AF 602收到终端发送的分组数据业务请求, 并根据终端 标识确定终端归属的 PLMN不是 PLMN 60后, 向预先为其配置的用于 作代理 CRF的 V-CRF 601发送用于选择计费规则的应用 /业务相关信息。
步骤 D4: V-CRF 601收到应用 /业务相关信息后, 根据终端标识确 定终端归属的 PLMN为 PLMN 61 , 然后向 H-CRF 611转发用于选择计 费规则的应用 /业务相关信息。
步骤 D5: H-CRF 611收到 AF 602提供的应用 /业务相关信息后, 根 据应用 /业务相关信息选择适当的计费规则,然后向 TPF 612发送选定的' 计费规则。 TPF 612根据 H-CRF 611提供的计费规则, 在相应的分组数 据流上执行分组数据过滤和计费信息收集。
当承载发生改变或终端使用新的分组数据业务时, 处理过程与上述 处理过程相同, 在此不再赘述。
当承载网络为 GPRS网络时, TPF即为 GGSN, 而在 GPRS网络中, 同一网给的 AF可以通过网络接入点 (APN, Access Point Name )来标 识, 即作为 TPF的 GGSN可以根据承载层面上得到的 APN寻址到一个 AF, 因此根据 APN的归属和配置, 运营商可以实现 TPF选择到一个使 用当前建立承载来传送业务数据流的 AF。 进一步, 为了实现这个 TPF和 AF能够选择到同一个 CRF, 也可以 利用 APN的概念, 运营商规划一个 CRF服务于某个或某几个 APN域, . TPF根据得到的 APN就可以确定一个 CRF, 而此 APN所在网络中的 AF根据运营商的配置, 也访问这个 CRF, 从而实现了同一个网络中的 AF和 TPF选择到同一个代理的 CRF。以上所述的 APN可视作网络接入 点, 因此, 这个选择方法也可以用于其他类型的网络中, 此时, APN就. 是其他网络中使用的网络接入点, 比如网络接入标识 (NAI, Network Access Identifier )。
通过配置 APN实现 TPF和 AF寻址到同一个 CRF的这种方法可以 单独使用, 也可以结合前面的终端标识来使用。 比如在某些情况下, 为 了简化 APN的配置, 可以结合终端标识来进一步确定一个 CRF。
在通过 APN实现寻址的方案中,考虑运营商配置的简单灵活,一般 TPF和 AF都会选择同一个网络中的, 因此这里只分析 AF和 TPF位于 同一个网络中的情况, 但是不代表 AF和 TPF位于不同网络的情况不支 · 持, 通过运营商的配置, 也可以实现 AF所在网络和 TPF所在网络是不 同的。
第一种处理方式是: AF和 TPF都位于终端当前拜访的 PLMN中, TPF在建立承载的时候根据 APN选择了一个 CRF, 这里根据运营商的 ' 配置, 选择的是 TPF所在 PLMN、 即终端当前拜访的 PLMN中的一个 CRF。 AF在会话建立过程中,根据运营商的配置, 在使用基于业务数据 流的计费时就和指定的一个 CRF联系, 这时候就选择了 TPF根据 APN 选定的那个 CRF, 其余过程和前面类似。
第二种处理方式是: AF和 TPF都位于终端归属的 PLMN中, TPF 在建立承载的时候根据 APN选择了一个 CRF, 这里根据运营商的配置, 选择的是 TPF所在 PLMN、 即终端归属的 PLMN中的一个 CRF。 AF在 会话建立过程中, 根据运营商的配置, 在使用基于业务数据流的计费时 就和指定的一个 CRF联系, 这时候就选择了 TPF根据 APN选定的那个 CRF, 其余过程和前面类似。
第三种处理方式是: AF和 TPF都位于终端当前拜访的 PLMN中, TPF在建立承载的时候根据 APN选择了一个 CRF, 这里根据运营商的 配置, 选择的是终端所归属的 PLMN中的一个 CRF。 AF在会话建立过 程中,根据终端标识发现服务的终端不是本 PLMN的终端, 则根据运营 商的配置和终端标识, 在使用基于业务数据流的计费时, 找到终端所归 属的 PLMN, 和该归属 PLMN指定的一个 CRF联系 , 这时候就选择了 TPF根据 APN选定的那个 CRF, 其余过程和前面类似。
图 7为实施例五实现漫游计费示意图, 如图 7所示, 本实施例中, 终端使用 VPLMN 70中的 TPF 703和 AF 701, 为 TPF 703和 AF 701配 置相同的 V-CRF 702作为为归属于其他 PLMN的终端提供服务的代理 CRF,根据 VPLMN 70与 HPLMN 71之间的协定, VPLMN 70中的 V-CRF 702与 HPLMN 71中的 H-CRF 711之间存在连接关系,如直接相连或通 过 G-CRF相连, 实现漫游计费的具体过程包括以下步驟:
步驟 E1: TPF 703收到来自承载层的终端发起的承载建立请求后, 根据终端标识确定终端的归属 PLMN不是 PLMN 70,那么,如果在 GPRS 网络中, TPF 703可以根据获取的 APN信息向预先为其配置的用于作代 理 CRF的 V-CR 702请求计费规则, 同时提供用于选择计费规则的相 关信息, 如与承载相关的信息。
步骤 E2: V-CRF 702收到 TPF 703的计费规则请求后, 根据终端标 识确定终端归属的 PLMN为 PLMN 71, 然后向 H-CRF 711转发计费规 则请求, 并提供用于选择计费规则的相关信息。
步骤 E3: H-CRF 711收到计费规则请求后, 根据 TPF 703提供的用 于选择计费规则的相关信息, 可能还包括 AF 701提供的用于选择计费 规则的相关信息, 如果为在线计费,还可能会有来自 OCS的信息, 选择 适当的计费规则, 然后向 V-CRF 702发送选定的计费规则。
步骤 E4: V-CRF 702收到 H-CRF 711提供的计费规则后, 可进一步 根据 VPLMN 70的计费策略,对 H-CRF 711提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 703发送计费规则。 TPF 703 根据 V-CRF 704提供的计费规则, 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
步骤 E5: AF 701收到终端发送的分组数据业务请求, 并根据终端 标识确定终端归属的 PLMN不是 PLMN 70, 那么, 如果在 GPRS网絡 中, AF可根据自身的 APN信息, 向预先为其配置的用于作代理 CRF 的 V-CRF 702发送用于选择计费规则的应用 /业务相关信息。
步骤 E6: V-CRF 702收到应用 /业务相关信息后, 4艮据终端标识确定. 终端归属的 PLMN为 HPLMN 71 ,然后向 H-CRF 711转发用于选择计费 规则的应用 /业务相关信息。
步驟 E7: H-CRF 711收到 AF 701提供的应用 /业务相关信息后, 根 据应用 /业务相关信息选择适当的计费规则,然后向 V-CRF 702发送选定. 的计费规则。
步骤 E8: V-CRF 702收到 H-CRF 711提供的计费规则后, 可进一步 根据 VPLMN 70的计费策略,对 H-CRF 711提供的计费规则进行相应修 改生成新的计费规则, 然后向 TPF 703 发送计费规则。 TPF 703 根据. V-CRF 702提供的计费规则 , 在相应的分组数据流上执行分组数据过滤 和计费信息收集。
当承载发生改变或终端使用新的分组数据业务时, 处理过程与上述 处理过程相同, 在此不再赘述。 以上所述的确定终端的归属网络不是本网络可为: 无法识别终端标 识;或根据终端的 MSISDN中的 MNC/MCC字段获知终端归属的 PLMN; 或根据基于起始会话协议 ( SIP ) 通用资源位置 ( URL ) , 如 user@networkl.com, 获知终端所归属的 PLMN为 network 1 , 等等。
以上所述的不同 PLMN可为同一制式下覆盖不同区域的 PLMN,如 覆盖北京地区的码分多址( CDMA )通信网络和覆盖上海地区的 CDMA 通信网络; 也可为不同制式下覆盖相同区域的 PLMN, 如覆盖广东地区. 的 CDMA通信网络和宽带码分多址( WCDMA )通信网络, 还可为不同 制式下覆盖不同区域的 PLMN, 如覆盖北京地区的 WCDMA通信网络 和覆盖上海地区的 CDMA通信网络。
总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本发. 明的保护范围。

Claims

权利要求书
1、 一种实现漫游计费的方法, 其特征在于, 该方法包含以下步骤:
A、在公用陆地移动通信网络 PLMN中配置用于与其他 PLMN中计 费规则功能实体 CRF交互计费相关信息的代理 CRF;
B、 终端使用当前拜访的 PLMN中的承载资源或分组数据业务时, 通过终端当前拜访的 PLMN中的代理 CRF向终端归属的 CRF提供用于 选择计费规则的信息;
C、 终端归属的 CRF根据收到的信息选择计费规则;
D、 终端归属的 CRF向当前为终端提供服务的传输面功能实体 TPF 提供计费规则。 '
2、 根据权利要求 1所述的方法, 其特征在于,
所述步骤 A为: 在终端当前拜访的 PLMN中为 TPF配置用于与其. 他 PLMN中 CRF交互计费相关信息的代理 CR ;
所述步骤 B为: 终端当前拜访的 PLMN中的 TPF收到终端发送的 承载请求后, 向为其配置的代理 CR 请求计费规则,并提供用于选择计 费规则的信息, 代理 CRF向终端归属的 CRF转发用于选择计费规则的 . 信息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述步骤 D之后进 一步包括:
El、 终端归属的 PLMN中的应用功能实体 AF收到终端发送的分组. 数据业务请求后, 向终端归属的 CRF提供用于选择计费规则的信息; E2、 终端归属的 CRF根据收到的信息选择计费规则;
E3、终端归属的 CR 向当前为终端提供服务的 TPF提供计费规则。
4、 根据权利要求 1所述的方法, 其特征在于, 所述步骤 A进一步包括:在终端当前拜访的 PLMN中为 TPF和 AF 分别配置用于与其他 PLMN中 CRF交互计费相关信息的代理 CRF;
如果终端向当前拜访的 PLMN中的 TPF发送承载请求,所述步骤 B · 为: 终端当前拜访的 PLMN中的 TPF收到终端发送的承载请求后, 向 为其配置的代理 CRF请求计费规则, 并提供用于选择计费规则的信息, 代理 CRF向终端归属的 CRF转发用于选择计费规则的信息;
如果终端向当前拜访的 PLMN中的 AF发送分组数据业务请求, 则 ' 所述步骤 B为:终端当前拜访的 PLMN中的 AF收到终端发送的分组数 据业务请求后, 向为其配置的代理 CR 提供用于选择计费规则的信息, 代理 CRF向终端归属的 CRF转发用于选择计费规则的信息。
5、根据权利要求 4所述的方法,其特征在于, 步骤 A中所述为 TPF ' 配置的代理 CRF与为 AF配置的代理 CR 相同。
6、 根据权利要求 4所述的方法, 其特征在于, 如果所述为 TPF配 置的代理 CRF与为 AF配置的代理 CRF不同, 则所述代理 CRF向终端 归属的 CRF转发用于选择计费规则的信息之后,进一步包括: 终端归属 的 CRF通过为 AF配置的代理 CRF,向 AF提供为 TPF配置的代理 CRF 的地址信息。
7、 根据权利要求 1所述的方法, 其特征在于,
所述步骤 A为: 在终端当前拜访的 PLMN中为 AF配置用于与其他 ' PLMN中 CRF交互计费相关信息的代理 CRF;
所述步驟 B为: 终端当前拜访的 PLMN中的 AF收到终端发送的分 组数据业务请求后,向为其配置的代理 CRJF提供用于选择计费规则的信 息, 代理 CRF向终端归属的 CRF转发用于选择计费规则的信息。
8、 根据权利要求 7所述的方法, 其特征在于, 该方法进一步包括: 终端归属的 PLMN中的 TPF收到终端发送的承载请求, TPF向终端归 属的 CRF请求计费规则, 并提供用于选择计费规则的信息; 终端归属的. CRF根据收到的信息选择计费规则; 终端归属的 CR 向当前为终端提 供服务的 TPF提供计费规则。
9、 根据权利要求 2、 4或 7任一所述的方法, 其特征在于, 所述向 CRF提供用于选择计费规则的信息之前, 进一步包括: 根据终端标识判 断终端归属的 PLMN是否为终端当前拜访的 PLMN, 如果是, 则向终端 归属的 CRF提供用于选择计费规则的信息; 否则, 向为 AF配置的代理 CRF提供用于选择计费规则的信息。
10、 根据权利要求 2、 4或 8任一所述的方法, 其特征在于, 所述向 CRF请求计费规则之前, 进一步包括: 根据终端标识判断终端归属的 PLMN是否为终端当前拜访的 PLMN, 如果是, 则向终端归属的 CRF 请求计费规则; 否则, 向为其配置的代理 CRF请求计费规则。
11、 根据权利要求 2、 4或 7任一所述的方法, 其特征在于, 所述向' 配置的代理 CRF提供用于选择计费规则的信息包括:根据终端标识或网 络接入点信息查找到配置的代理 CRF, 然后向其提供用于选择计费规则 的信息。
12、 根据权利要求 2、 4或 7任一所述的方法, 其特征在于, 所述代 理 CRF向终端归属的 CRF转发用于选择计费规则的信息,为:代理 CRF 根据终端标识查找到终端归属的 CRF, 然后向其转发用于选择计费规则 的信息。
13、 根据权利要求 2、 3或 4任一所述的方法, 其特征在于, 所述步' 驟 D包括以下步骤:
Dl、终端归属的 CRF向为 TPF配置的代理 CRF发送选定的计费规 则;
D2、 该代理 CRF向 TPF发送计费规则。
14、 根据权利要求 13所述的方法, 其特征在于, 所述步骤 D2之前 进一步包括: 代理 CRF根据终端当前拜访的 PLMN的计费策略, 对终 端归属的 CRF提供的计费规则进行修改, 生成新的计费规则。
15、 根据权利要求 1所述的方法, 其特征在于, 所述步驟 D之后进 一步包括: TPF根据计费规则收集计费信息, 对终端进行计费。
16、 一种实现漫游计费的系统, 其特征在于, 该系统包括: TPF、 终端归属的 PLMN中的终端归属的 CRF, 终端归属的 PLMN以外的其' 他 PLMN中的代理 CRF,
终端归属的 CRF与代理 CRF相连接, 用于传输用于选择计费规则 的信息;
TPF与终端归属的 CRF或代理 CRF相连, 用于传输计费规则请求 · 及选定的计费规则。
17、根据权利要求 16所述的系统,其特征在于,该系统进一步包括: AF, 与终端归属的 CRF或代理 CRF相连, 用于传输用于选择计费规则 的信息。
18、 根据权利要求 16或 17所述的系统, 其特征在于, 所述终端归 属的 CRF与代理 CRF通过接口直接相连。
19、 根据权利要求 16或 17所述的系统, 其特征在于, 所述终端归 属的 CRF与代理 CRF通过网关 CRF相连。
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