WO2011060698A1 - 一种实现用量监测控制的方法及系统 - Google Patents

一种实现用量监测控制的方法及系统 Download PDF

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Publication number
WO2011060698A1
WO2011060698A1 PCT/CN2010/078662 CN2010078662W WO2011060698A1 WO 2011060698 A1 WO2011060698 A1 WO 2011060698A1 CN 2010078662 W CN2010078662 W CN 2010078662W WO 2011060698 A1 WO2011060698 A1 WO 2011060698A1
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Prior art keywords
usage
pcrf
user
monitoring
session
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PCT/CN2010/078662
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English (en)
French (fr)
Inventor
周晓云
芮通
吴锦花
孙闵
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP10831113.5A priority Critical patent/EP2493221A4/en
Priority to US13/510,304 priority patent/US9154314B2/en
Publication of WO2011060698A1 publication Critical patent/WO2011060698A1/zh

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Classifications

    • 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
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403Architecture for metering, charging or billing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403Architecture for metering, charging or billing
    • H04L12/1407Policy-and-charging control [PCC] architecture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/14Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1432Metric aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/11Identifying congestion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/12Avoiding congestion; Recovering from congestion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/20Traffic policing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80Responding to QoS
    • 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
    • H04M15/765Linked or grouped accounts, e.g. of users or devices
    • 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
    • H04M15/765Linked or grouped accounts, e.g. of users or devices
    • H04M15/7652Linked or grouped accounts, e.g. of users or devices shared by users
    • 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
    • H04M15/88Provision for limiting connection, or expenditure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24Accounting or billing

Definitions

  • the present invention relates to policy and charging techniques, and more particularly to a method and system for implementing usage monitoring control. Background technique
  • the PCC architecture is a functional framework that can be applied to multiple access technologies.
  • the PCC architecture can be applied to the UMTS Terrestrial Radio Access Network (UMTS, Universal Mobile Telecommunications System). ), Global System for Mobile Communication (GSM) / GSM Data Enhanced Evolution (EDGE) radio access network, Interworking Wireless Local Area Network (I-WLAN), and Evolved Packet System (EPS).
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile Communication
  • EDGE GSM Data Enhanced Evolution
  • I-WLAN Interworking Wireless Local Area Network
  • EPS Evolved Packet System
  • FIG. 1 is a schematic diagram of an existing PCC component architecture. The following describes various logical functional entities and their interface functions in the PCC architecture shown in FIG. 1. As shown in Figure 1:
  • AF Application Function
  • the network resources used by these business applications require dynamic policy control.
  • the AF passes the related service information to the policy control and charging rule function entity.
  • PCRF Policy and Charging Rules Function
  • the PCRF is the core of the PCC and is responsible for policy decision making and billing rules.
  • the PCRF provides network control rules based on service data flows, including traffic data flow detection, Gating Control, Quality of Service (QoS) control, and data flow based charging rules.
  • the PCRF sends its policy and charging rules to the Policy and Control Enforcement Function (PCEF).
  • PCEF Policy and Control Enforcement Function
  • the basis for the PCRF to formulate policies and charging rules includes: business-related information obtained from AF, user policy charging control related to policy control and charging obtained from the user subscription database (SPR, Subscription Profile Repository) Signing information, and information about the bearer-related network obtained from the PCEF through the Gx interface.
  • 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.
  • Resource allocation, and performing gating control according to the information provided by the AF at the same time, the PCEF triggers reporting the event occurring on the bearer network according to the event subscribed by the PCRF; according to the charging rule sent by the PCRF, the PCEF performs the corresponding service operation of the service data flow, Billing can be either online charging or offline charging.
  • the PCEF In the case of online charging, the PCEF needs to perform credit management together with the Online Charging System (OCS); when offline charging, the related calculation between the PCEF and the Offline Charging System (OFCS) Fee information.
  • OCS Online Charging System
  • OFCS Offline Charging System
  • the interface between the PCEF and the PCRF is a Gx interface
  • the interface between the PCEF and the OCS is a Gy interface
  • the interface between the PCEF and the OFCS is a Gz interface.
  • PCEFs are generally located on gateways of the network, such as EPS Packet Data Network Gateway (PDN-GW), General Packet Radio Service (GPRS, General Packet Radio Service), GPRS Gateway Support Node (GGSN), and Interconnected Wireless LAN ( Packet Data Gateway (PDG, Packet Data) in I-WLAN, Interworking WLAN Gatewa) and so on.
  • PDN-GW Packet Data Network Gateway
  • GPRS General Packet Radio Service
  • GGSN General Packet Radio Service Gateway Support Node
  • Interconnected Wireless LAN Packet Data Gateway (PDG, Packet Data) in I-WLAN, Interworking WLAN Gatewa) and so on.
  • the Bearer Binding and Event Reporting Function (BBE F) is usually located in the Access Network Gateway.
  • BBE F The Bearer Binding and Event Reporting Function
  • the S-GW exists.
  • BBERF When a user equipment accesses through a trusted non-3GPP access network, a BBERF is also present in the trusted non-3GPP access gateway.
  • the User Contracted Database stores user policy fee 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 PCC supports dynamic usage monitoring control to implement dynamic policy decisions based on the total amount of real-time network resource usage.
  • Usage monitoring can be applied to a single service data stream, a group of service data streams, or all traffic flows of an IP-Connectivity Access Network (IP-CAN) session.
  • IP-CAN IP-Connectivity Access Network
  • usage refers to user plane data traffic.
  • a monitoring key is used to identify an instance requiring usage monitoring, for example: When the PCRF allocates a monitoring key and a corresponding threshold for all service flows of an IP-CAN session, the PCEF will The threshold monitors all traffic flows of the IP-CAN and uses the Monitoring Ke to identify the usage of the upper 4 ⁇ .
  • the PCRF When the PCRF assigns a monitoring key and a corresponding threshold to a service flow or a group of service data flows, the PCRF carries the Monitoring Key in the PCC rule corresponding to the service data flow or a set of service data flows, and then the PCEF will be based on the threshold. Monitor the service data flow corresponding to the PCC rule with the same Monitoring Key, and use the Monitoring Key to identify the usage on the 4th.
  • the total allowed amount of a certain PDN of the user can also be saved in the SPR, that is, the total allowed amount of all service flows for one IP-CAN session, and can also be called the total per user per PDN. Allowable amount.
  • the SPR can also store the total allowed usage of certain specific services of a user's PDN, that is, the total allowed usage for a service data stream or a group of service data streams.
  • the monitoring key can also be used for i.
  • the PCEF When the PCEF detects that the usage has reached the threshold, the IP-CAN session is terminated, all PCC rules containing a Monitoring Key are deleted, or the PCRF explicitly requests the usage report, the PCEF will report to the PCRF the usage of the related Monitoring Ke since the last report. Consumption situation. When the PCRF receives the dose from the PCEF, the PCRF will deduct the reported usage value from the total allowable amount. If the PCEF reports the usage of a Monitoring Key and needs to continue monitoring, the PCRF will provide a new threshold to the PCEF; if it is not necessary to continue monitoring, the PCRF will not provide a new threshold to the PCEF. When the last IP-CAN session of an APN of the user is terminated, the PCRF will save the remaining total allowed amount in the SPR, including the total allowed amount of the PDN or the total allowed amount of some specific services for the PDN.
  • the existing usage monitoring control is performed for a specific PDN of a user or a specific service flow of a certain PDN.
  • the PCRF should simultaneously monitor the usage of multiple IP-CAN sessions to the same PDN or some specific service flows to the same PDN established by multiple users participating in the package.
  • the main object of the present invention is to provide a method for implementing usage monitoring control, which can implement usage monitoring control for multiple user equipments sharing subscription information, and avoid policy charging control conflicts.
  • Another object of the present invention is to provide a system for implementing usage monitoring control, which can implement usage monitoring control for multiple user equipments sharing subscription information, and avoid policy charging control conflicts.
  • the invention provides a method for implementing usage monitoring control, the method comprising:
  • the PCRF formulates a usage monitoring strategy for each IP-CAN session or service data flow sharing the total allowed amount according to the total allowed usage of the multi-user sharing obtained;
  • the PCEF performs the usage monitoring according to the usage monitoring strategy issued by the PCRF, and reports the usage amount to the PCRF. After the PCRF receives the usage reported by the PCEF, the consumed amount is deducted from the total allowable amount shared by the multi-user.
  • the usage monitoring policy includes a usage threshold allocated by the PCRF for each IP-CAN session or service data flow sharing the total allowed usage.
  • the total allowed usage of the PCRF to obtain multi-user sharing includes:
  • the PCRF obtains the total allowed usage of the multi-user sharing from the SPR, where the total allowed usage is included in the subscription information of the user returned by the SPR; meanwhile, the SPR also returns to the PCRF to share the total usage.
  • the PCRF is based on the total allowable amount of multi-user sharing obtained, for each An IP-CAN session or service data flow sharing the total allowed usage amount is used to establish a usage monitoring policy, wherein: the PCRF allocates a first user to the first user according to the obtained total allowed usage of the multi-user sharing a usage threshold, the first usage threshold being less than or equal to the total allowable amount.
  • the PCRF uses the total allowed usage of the obtained multi-user sharing for each shared
  • the total allowable amount of IP-CAN session or service data flow to establish a usage monitoring strategy is:
  • the PCRF determines, according to the user identifier list, that the IP-CAN session established by the first user and the IP-CAN session established by the second user share the total allowed usage amount;
  • the PCRF allocates a second usage threshold of the second user according to the total allowed amount, and the sum of the first usage threshold and the second usage threshold is less than or equal to the total allowed amount.
  • the first usage threshold or the second usage threshold is for all service data flows of any one of the IP-CAN sessions, or for one service data flow or multiple service data flows in any one of the IP-CAN sessions.
  • the PCRF does not include the Monitoring Key in the PCC rule
  • the PCRF includes the Monitoring Key in the service data flow.
  • the corresponding PCC rule is delivered.
  • the PCC rule with the same Monitoring Key shares the usage threshold of the Monitoring Key.
  • the triggering condition for the PCEF to report the usage to the PCRF is: when the required usage reporting event is triggered; or, all PCC rules corresponding to the sharing of the Monitoring Key are deleted or deactivated; or, the IP-terminating is terminated.
  • the PCRF request When the PCEF is on the top.
  • the method further includes: when all IP-CAN sessions sharing all the users of the total allowable amount are terminated, the PCRF saves the remaining total allowed usage amount into the SPR.
  • the system for implementing the quantity monitoring control provided by the present invention includes at least a PCRF and a PCEF, wherein
  • the PCRF is used by the PCRF to establish a usage monitoring strategy for each IP-CAN session or service data flow that shares the usage according to the total allowable usage of the multi-user sharing.
  • the usage monitoring policy is sent to the PCEF, and the amount reported by the PCEF is received. Deducting the consumed amount from the total allowable amount shared by multiple users;
  • the PCEF is configured to perform the dosage monitoring according to the dosage monitoring strategy issued by the PCRF, and report the dosage to the PCRF.
  • the system further includes an SPR, configured to save the total allowed usage of the multi-user sharing and the user identifier sharing the total allowed usage.
  • the PCRF is further configured to save the remaining total allowed amount to the SPR when all IP-CAN sessions sharing all the users of the total allowed amount are terminated.
  • the PCRF includes a usage monitoring policy for each IP-CAN session or service data flow sharing the total allowable amount according to the total allowable usage of the obtained multi-user sharing; PCEF according to PCRF
  • the dosage monitoring strategy is executed to monitor the dosage and report the dosage to the PCRF.
  • the PCRF receives the usage report, the consumption amount is deducted from the total allowable amount shared by the multi-user.
  • the method of the present invention shares the total allowable usage amount, the implementation scheme of the PCRF simultaneously monitoring the usage of the multiple users according to the total allowable usage is given, and the policy charging control conflict is avoided.
  • FIG. 1 is a schematic diagram of a composition structure of an existing PCC
  • 2 is a flow chart of a method for implementing usage monitoring control according to the present invention
  • FIG. 3 is a schematic flowchart of an embodiment of a method for implementing usage monitoring control according to the present invention
  • FIG. 4 is a schematic flowchart of a first embodiment for implementing usage reporting in FIG.
  • FIG. 5 is a schematic flow chart of the second embodiment of implementing the usage report in FIG. 3;
  • FIG. 6 is a schematic flow chart of the third embodiment of the implementation of the usage report in FIG. detailed description
  • Step 200 The PCRF shares the total allowable amount of IP-CAN according to the total allowable amount of multi-user sharing obtained. Establish a usage monitoring strategy for the session or service data flow, and deliver a usage monitoring strategy to the PCEF;
  • the usage monitoring policy includes a usage threshold that the PCRF allocates for each IP-CAN session or service data flow sharing the total allowed amount;
  • the PCRF obtains the total allowed usage of the multi-user sharing from the SPR, and the total allowed usage is included in the subscription information of the user returned by the SPR; meanwhile, the SPR returns a list of the user identifiers sharing the total allowed usage to the PCRF;
  • the usage threshold may be all service data flows for an IP-CAN session, or may be one service data flow or multiple service data flows in an IP-CAN session. If the PCRF monitors all traffic data flows for an IP-CAN session, the PCRF does not include the Monitoring Key in the PCC rules; if the PCRF monitors certain traffic data flows for an IP-CAN session, the PCRF will use the Monitoring Key.
  • Step 201 The PCEF performs the usage monitoring according to the usage monitoring strategy issued by the PCRF, and reports the dosage to the PCRF.
  • the PCEF reports the usage amount, which may be triggered when the required usage report event is triggered, for example, the usage of a Monitoring Key (including the IP-CAN session level and the service data flow level) reaches a threshold, etc.;
  • the CAN session is triggered; it can also be requested by the PCRF on the PCEF and so on.
  • Step 202 After the PCRF receives the amount reported by the PCEF, the amount of consumption is subtracted from the total allowable amount shared by the multi-user.
  • the method of the present invention further includes: saving the remaining total allowable usage into the SPR when all IP-CAN sessions sharing all of the total allowed usage are terminated.
  • a system for implementing the amount monitoring control which comprises at least a PCRF and a PCEF, wherein
  • the PCRF is configured to formulate a usage monitoring policy for each IP-CAN session or service data flow that shares the usage according to the total allowed usage of the multi-user sharing, and send a usage monitoring policy to the PCEF to receive the amount reported by the PCEF.
  • the amount of consumption is deducted from the total allowable amount shared by multiple users;
  • the PCEF is used to perform the dosage monitoring according to the dosage monitoring strategy issued by the PCRF, and reports the dosage to the PCRF.
  • the system of the present invention also includes an SPR for providing the PCRF with a total allowed amount of multi-user sharing and a user identification sharing the total allowed amount.
  • the PCRF is also used to save the remaining total allowed amount to the SPR when all IP-CAN sessions sharing all users of a total allowable amount are terminated.
  • FIG. 3 is a schematic flowchart of an embodiment of a method for implementing usage monitoring control according to the present invention.
  • This embodiment describes that the user equipment 1 (UE1) and the UE2 share a total allowable amount of a PDN (TAU, Total Allowanced usage ) or TAU of some specific service data flows of a PDN;
  • TAU Total Allowanced usage
  • the PCRF performs usage monitoring and control on the IP-CAN sessions established by UE1 and UE2 according to the TAU, as shown in FIG. As shown, including:
  • Step 300 In the process of requesting the establishment of the IP-CAN session 1, the UE sends an IP-CAN session establishment request message to the PCEF1, where the IP-CAN session establishment request message carries the user identifier 1 of the UE1 and the PDN network requesting access. PDN ID 1.
  • Step 301 The PCEF1 sends an IP-CAN session establishment indication message to the PCRF, where the IP-CAN session establishment indication message carries the user identifier 1, the PDN identifier 1 and the IP address 1 (IP Address 1) allocated for the UE1.
  • IP-CAN session establishment indication message carries the user identifier 1, the PDN identifier 1 and the IP address 1 (IP Address 1) allocated for the UE1.
  • Step 302 The PCRF sends a subscription document request to the SPR, where the subscription document request carries the user identifier 1 and the PDN identifier 1.
  • Step 303 The SP carries the subscription information of the UE1 in the returned subscription document response according to the user identifier 1 and the PDN identifier 1;
  • the SPR includes the total allowable amount in the subscription information and carries the contracted information.
  • the document response is returned to the PCRF, and the user identification list sharing the total allowable amount, that is, the user ID 1 and the user ID 2 are carried in the contract document response.
  • Step 304 The PCRF establishes a usage monitoring policy according to the returned subscription information including the total allowed usage amount, and carries the usage monitoring policy in the IP-CAN session establishment confirmation message returned to the PCEF1.
  • the usage monitoring strategy includes the event trigger Usage_Report, the usage monitoring strategy for IP-CAN session 1 or some specific service data flows.
  • UT1 may be for all traffic data flows of IP-CAN session 1, or it may be For a service data stream or multiple service data streams in IP-CAN session 1. If the PCRF monitors all traffic data flows for IP-CAN Session 1, the PCRF does not include the Monitoring Key in the PCC rules; if the PCRF monitors certain traffic data flows for IP-CAN Session 1, the PCRF includes the Monitoring Key The PCC rule with the same Monitoring Ke shares the usage threshold of the Monitoring Key. PCEF1 performs dose monitoring according to the dose monitoring strategy issued by the PCRF.
  • Step 305 PCEF1 returns an IP-CAN session establishment response to UE1, and carries IP Address 1 in the IP-CAN session establishment response.
  • the PCEF1 monitors the usage of the IP-CAN session 1 established by the UE1 according to the usage monitoring policy delivered by the PCRF.
  • Step 306 In the process of the UE2 requesting to establish the IP-CAN session 2, send an IP-CAN session establishment request message to the PCEF2, request to establish an IP-CAN session 2, and carry the user identifier of the UE2 in the IP-CAN session establishment request message. 2 and the PDN identifier 1 of the PDN network requesting access.
  • PCEF1 and PCEF2 may or may not be the same.
  • PCEF1 and PCEF2 may or may not be the same.
  • PCEF1 is different from PCEF2.
  • Step 307 The PCEF2 sends an IP-CAN session establishment indication message to the PCRF, where the IP-CAN session establishment indication message carries the user identifier 2, the PDN identifier 1 and the IP Address2 allocated for the UE2.
  • Step 308 The PCRF sends a subscription document request to the SPR, where the subscription document request carries the user identifier 2 and the PDN identifier 1.
  • Step 309 The SP carries the subscription information of the UE2 in the returned subscription document response according to the user identifier 1 and the PDN identifier 1;
  • Step 310 The PCRF establishes a usage monitoring policy according to the subscription information of the UE2, and carries the usage monitoring policy in the IP-CAN session establishment confirmation message returned to the PCEF2.
  • the usage monitoring strategy includes an event trigger --Usage_Report.
  • the PCRF determines that the IP-CAN session 1 established by UE1 and the IP-CAN session 2 established by UE2 share the total allowable usage.
  • UT2 may be for all traffic data streams of IP-CAN session 2, or may be for one service flow or multiple service data flows in IP-CAN session 2. If the PCRF monitors all traffic data flows for IP-CAN Session 2, the PCRF does not include the Monitoring Key in the PCC rules; if the PCRF monitors certain traffic data flows for IP-CAN Session 2, the PCRF includes the Monitoring Key The PCC rule with the same Monitoring Key shares the usage threshold of the Monitoring Key. PCEF2 performs dose monitoring based on the dose monitoring strategy issued by PCRF.
  • Step 311 PCEF2 returns an IP-CAN session establishment response to UE2, and carries IPAddress2 in the IP-CAN session establishment response.
  • UE2 establishes an IP-CAN session 2, and the PCRF obtains the total allowable usage from the SPR, and delivers a usage monitoring policy to PCEF1 and PCEF2, respectively, including usage thresholds UT1 and UT2.
  • PCEF1 and PCEF2 perform dose monitoring.
  • FIG. 4 is a schematic flow chart of the first embodiment of the implementation of FIG. 3, which is shown in FIG. 4, and includes:
  • Step 400 The PCEF1 detects that the required usage reporting time is triggered.
  • the trigger may be that the monitoring key of a Monitoring Key (including the IP-CAN session level and the service data flow level) reaches a threshold or all PCC rules corresponding to a certain Monitoring Key. Was deleted or deactivated.
  • Step 401 PCEF1 sends an IP-CAN session modification indication message to the PCRF in IP-CAN.
  • Step 402 The PCRF deducts the reported consumption value URV1 from the total allowable amount
  • the PCRF returns an IP-CAN session modification confirmation message to PCEF1. If the PCRF allocates a new usage threshold UTT, the IP-CAN session modification confirmation message carries UT1'.
  • Step 403 If the new usage threshold UTT is sent by the PCRF, the PCEF1 continues to perform the usage monitoring; if the PCRF does not issue a new usage threshold, the PCEF1 no longer performs the usage monitoring.
  • FIG. 5 is a schematic flow chart of the second embodiment of the implementation of FIG. 3, and as shown in FIG. 5, including:
  • Step 500 PCEF1 detects that the IP-CAN session needs to be terminated. 1
  • the trigger may be from other network elements, UE1 or PCEF1 itself.
  • Step 502 The PCRF deducts the reported consumption value URV1 from the total allowable amount, and updates the total allowable amount to the value of (TAU-URV1).
  • the PCRF returns an IP-CAN session termination confirmation message to PCEF1. Since the IP-CAN session 2 of UE2 is still using the total allowable amount at this time, the PCRF does not report the current remaining total allowable amount to the SPR.
  • Step 503 PCEF2 detects that the IP-CAN session 2 needs to be terminated, and the trigger may be from other network elements, UE2 or PCEF2 itself.
  • Step 504 The PCEF2 sends an IP-CAN session termination indication message to the PCRF.
  • Step 505 The PCRF deducts the reported consumption value URV2 from the total allowable amount, and updates the TAU to TAU-URV2.
  • the PCRF returns an IP-CAN session termination confirmation message to PCEF2.
  • Step 506 The PCRF learns that all the IP-CAN sessions, that is, the IP-CAN session 1 and the IP-CAN session 2, of all users sharing the total allowed usage, that is, UE1 and UE2, have been terminated, and the PCRF sends a cancel subscription notification request message to the SPR.
  • the cancellation of the subscription notification request message carries the remaining total allowed usage.
  • Step 507 The SPR returns a cancel subscription notification response message to the PCRF.
  • FIG. 6 is a schematic flow chart of the third embodiment of the implementation of FIG. 3, and as shown in FIG. 6, including:
  • Step 600 The PCRF detects that the PCEF1 reporting consumption consumption event is triggered.
  • Step 601 The PCRF sends a usage report request message to the PCEF1, and requests the PCEF1 to report the usage consumption.
  • the usage report message carries the Monitoring Key that needs to be reported.
  • the Monitoring Key is sent before the PCRF, and may be for the IP-CAN session. All of the service data streams may also be a service data stream or a group of service data streams for IP-CAN session 1.
  • Step 603 The PCRF deducts the reported consumption consumption value U V 1 from the total allowed usage amount of the Monitoring Key that is required to be reported, and updates the total allowable usage amount to (TAU - URV 1 ).
  • the total allowed usage is shared by UE1 and UE2, and UE1 and UE2 respectively establish only one for one APN (ie, PDN identifier 1).
  • the method of the present invention is also applicable to the case where UE1 and UE2 respectively establish a plurality of IP-CAN sessions for one APN (ie, PDN identifier 1), and the specific implementation of the method according to the present invention is easily obtained by those skilled in the art according to the foregoing embodiments. , I won't go into details here.
  • the PCRF obtains the shared total allowable usage and shared user identification list, all users can view all IP-CAN sessions of the same APN as a whole.
  • the PCRF determines that all IP-CAN sessions of all users sharing the total allowable amount are terminated, the PCRF saves the remaining total allowable usage to the SPR.
  • the sharing of subscription information can be achieved through the User Data Convergence (UDC) architecture, which is the front end of the UDC architecture.
  • UDC User Data Convergence
  • shared subscription information can also be stored in other databases, not just SPR.

Description

一种实现用量监测控制的方法及系统 技术领域
本发明涉及策略和计费技术, 尤其涉及一种实现用量监测控制的方法 及系统。 背景技术
自第三代合作伙伴计划阶段 7 ( 3GPP Release7 ) 标准体系以来, 策略 和计费功能由策略和计费控制 ( PCC , Policy and Charging Control )框架来 实现。 PCC 架构是一个能够应用于多种接入技术的功能框架, 例如, PCC 架构可以应用 于通用移动通信系统 ( UMTS, Universal Mobile Telecommunications System )的陆上无线接入网(UTRAN, UMTS Terrestrial Radio Access Network )、全球移动通信系统( GSM, Global system for Mobile Communication ) /GSM数据增强演进( EDGE )无线接入网、 互通无线局域 网 (I-WLAN ) 以及演进的分组系统(EPS, Evolved Packet System ) 等。
PCC主要实现了策略控制和计费两大功能。 图 1为现有 PCC组成架构 示意图, 以下对图 1所示的 PCC架构中的各个逻辑功能实体及其接口功能 进行描述。 如图 1所示:
应用功能 ( AF , Application Function ) , 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策略控制与计费规则功能实体
( PCRF, Policy and Charging Rules Function )。 如果这些业务信息与 PCRF 的策略相一致, 则 PCRF接受该协商; 否则, PCRF拒绝该协商, 并在反馈 时给出 PCRF可接受的业务参数。 随后, AF可将这些参数返回给用户设备
( UE, User Equipment )0 其中, AF和 PCRF之间的接口是 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 )、 服务质量(QoS , Quality of Service )控制以及基于 数据流的计费规则等。 PCRF将其制定的策略和计费规则发送给策略和计费 执行功能实体(PCEF, Policy and Control Enforcement Function )执行; 同 时, PCRF还需要保证这些规则和用户的签约信息一致。 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、从用户签约 数据库( SPR , Subscription Profile Repository )获得的与与策略控制和计费 相关的用户策略计费控制签约信息、 以及通过 Gx接口从 PCEF获得的与承 载相关网络的信息。
PCEF通常位于网关 ( GW, Gate-Way ) 内, 在承载面执行 PCRF所制 定的策略和计费规则。 PCEF按照 PCRF所发送的规则中的业务数据流过滤 器对业务数据流进行检测, 进而对这些业务数据流执行 PCRF 所制定的策 略和计费规则;在承载建立时, PCEF按照 PCRF发送的规则进行资源分配, 并根据 AF提供的信息进行门控控制; 同时, PCEF根据 PCRF订阅的事件 触发上报承载网络上发生的事件; 根据 PCRF发送的计费规则, PCEF执行 相应的业务数据流计费操作, 计费既可以是在线计费, 也可以是离线计费。 如果是在线计费, 则 PCEF 需要和在线计费系统(OCS, Online Charging System )一起进行信用管理; 离线计费时, PCEF和离线计费系统( OFCS , Offline Charging System )之间交换相关的计费信息。 其中, PCEF与 PCRF 之间的接口是 Gx接口, PCEF与 OCS之间的接口是 Gy接口, PCEF与 OFCS 之间的接口是 Gz接口。 PCEF—般都位于网络的网关上, 如 EPS的分组数 据网络网关( PDN-GW )、 通用无线分组业务( GPRS , General Packet Radio Service ) 中的 GPRS 网关支持节点 ( GGSN ) 以及互联无线网局域网 ( I-WLAN, Interworking WLAN ) 中的分组数据网关 (PDG, Packet Data Gatewa ) 等。
承载绑定和事件报告功能实体 ( BBE F , Bearer Binding and Event Reporting Function )通常位于接入网网关 ( Access Network Gateway ) 内。 如当用户设备通过 E-UTRAN接入 EPS、 服务网关 S-GW与 P-GW之间釆 用代理移动互联网协议版本 6 ( ΡΜΙΡνό , Proxy Mobile Internet Protocol version 6 )协议时, S-GW中就存在 BBERF。当用户设备通过可信任非 3GPP 接入网接入时, 可信任非 3GPP接入网关中也存在 BBERF。
用户签约数据库 (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。
现有技术中, PCC 支持动态的用量监测控制, 以实现基于实时的网络 资源使用总量执行动态的策略决策。 用量监测可应用于单个业务数据流、 一组业务数据流或者一个 IP连接接入网 (IP-CAN, IP-Connectivity Access Network )会话的所有业务流。 目前, 用量( usage )指用户面数据流量。 现 有技术中, 采用监测键( Monitoring Key )来标识一个需要用量监测的实例, 比如: 当 PCRF为一个 IP-CAN会话的所有业务流分配了 Monitoring Key以 及相应的阈值,那么, PCEF将根据该阈值监测 IP-CAN的所有业务流流量, 并用该 Monitoring Ke 来标识上 4艮的用量。 当 PCRF为一个业务流或一组 业务数据流分配了 Monitoring Key以及相应的阈值 , PCRF将 Monitoring Key 携带在这个业务数据流或一组业务数据流对应的 PCC规则中, 那么, PCEF 将根据该阈值监测具有相同 Monitoring Key的 PCC规则所对应的业务数据 流流量, 并用该 Monitoring Key标识上 4艮的用量。
同时, 在 SPR中还可以保存用户某个 PDN的总允许用量, 即针对一个 IP-CAN会话的所有业务流的总允许用量, 也可以称为每 PDN每用户的总 允许用量。 SPR中还可以保存用户某个 PDN的某些具体业务的总允许用量, 即针对一个业务数据流或一组业务数据流的总允许用量, 通常也可以用 Monitoring Key进行 i只。
当用户建立到某个 PDN的 IP-CAN会话后, SPR将总允许用量下发给 PCRF。 PCRF 进行用量监测控制时, PCRF 向 PCEF 订阅用量上报 ( Usage— Report ) 事件触发器。 当 Monitoring Ke 包含在 PCC规则中下发 后, 具有相同 Monitoring Key的 PCC规则共享该 Monitoring Key对应的阈 值。 当 Monitoring Ke 不包含在任何 PCC规则中时, IP-CAN会话的所有 业务数据流共享该 Monitoring Key对应的阔值。 PCEF监测到用量已达到阈 值、 IP-CAN会话终结、 包含某个 Monitoring Key的所有 PCC规则均被删 除或者 PCRF显式请求用量上报时, PCEF将向 PCRF报告自从上一次上报 以来相关 Monitoring Ke 的用量消耗情况。当 PCRF收到来自 PCEF的用量 上报后, PCRF将从总允许用量中扣除上报的用量值。 如果 PCEF上报某个 Monitoring Key的用量并且需要继续进行监测, 那么, PCRF将提供新的阈 值给 PCEF; 若无需继续进行监测, PCRF不提供新的阚值给 PCEF。 当用 户的一个 APN的最后一个 IP-CAN会话终结时, PCRF将在 SPR中保存剩 余的总允许用量, 包括该 PDN的总允许用量或该 PDN的某些具体业务的 总允许用量。
从现有的用量监测控制方案可以看到, 现有用量监测控制是针对一个 用户的某个 PDN或某个 PDN的一些具体业务流进行的。 现有用量监测控 制存在一些局限性, 在某些场景中将无法应用, 比如: 对于家庭套餐, 参 加该套餐的多个用户共享某个 PDN的总允许用量或某个 PDN的一些具体 业务流的总的签约允许用量。 此时, PCRF应该同时对参加该套餐的多个用 户所建立的多个到同一个 PDN的 IP-CAN会话或到同一个 PDN的一些具体 业务流进行用量监测。 现有技术中, 当多个用户共享总允许用量时, 没有给出 PCRF 同时对 多个用户根据总允许用量进行用量监测的实现方案。 如果还采用现有用量 监测控制方法来为共享签约信息的多个用户设备实现用量监测控制的话, 必然会出现策略计费控制冲突。 发明内容
有鉴于此, 本发明的主要目的在于提供一种实现用量监测控制的方法, 能够为共享签约信息的多个用户设备实现用量监测控制, 避免策略计费控 制冲突。
本发明的另一目的在于提供一种实现用量监测控制的系统, 能够为共 享签约信息的多个用户设备实现用量监测控制, 避免策略计费控制沖突。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供的一种实现用量监测控制的方法, 该方法包括:
PCRF根据获得的多用户共享的总允许用量,为每个共享该总允许用量 的 IP-CAN会话或业务数据流制定用量监测策略;
PCEF根据 PCRF下发的用量监测策略执行用量监测, 并向 PCRF上报 用量; 当 PCRF收到 PCEF上报的用量后,从多用户共享的所述总允许用量 中扣除消耗的用量。
上述方案中, 所述用量监测策略中包含有所述 PCRF 为每个共享所述 总允许用量的 IP-CAN会话或业务数据流分配的用量阈值。
上述方案中, 当所述多用户中存在第一用户请求建立 IP-CAN会话时, 所述 PCRF获得多用户共享的所述总允许用量包括:
所述 PCRF从 SPR中获取多用户共享的所述总允许用量, 所述总允许 用量包含在所述 SPR返回的用户的签约信息中; 同时, 所述 SPR还向所述 PCRF返回共享所述总允许用量的用户标识列表。
上述方案中, 所述 PCRF根据获得的多用户共享的总允许用量, 为每 一个共享该总允许用量的 IP-CAN会话或业务数据流制定用量监测策略, 为: 所述 PCRF根据获得的多用户共享的所述总允许用量, 为所述多用户 中的第一用户分配第一用量阈值, 所述第一用量阈值小于等于所述总允许 用量。
上述方案中, 当所述多用户中存在除所述第一用户之外的第二用户请 求建立 IP-CAN会话时, 所述 PCRF根据获得的多用户共享的总允许用量, 为每个共享该总允许用量的 IP-CAN会话或业务数据流制定用量监测策略, 为:
所述 PCRF根据用户标识列表,判断出所述第一用户建立的 IP-CAN会 话和第二用户建立的 IP-CAN会话共享所述总允许用量;
所述 PCRF根据所述总允许用量分配第二用户的第二用量阚值, 且所 述第一用量阈值与第二用量阈值之和小于等于所述总允许用量。
上述方案中,所述第一用量阈值或第二用量阈值针对任意一个 IP-CAN 会话的所有业务数据流,或者针对任意一个 IP-CAN会话中的一个业务数据 流或多个业务数据流。
上述方案中,所述第一用量阔值或第二用量阈值针对任意一个 IP-CAN 会话的所有业务数据流进行监测时, 所述 PCRF不将 Monitoring Key包含 在 PCC规则中;
所述第一用量阈值或第二用量阈值针对任意一个 IP-CAN会话的一个 业务数据流或多个业务数据流、 且不为所有业务数据流时, 所述 PCRF将 Monitoring Key 包含在业务数据流对应的 PCC 规则中下发, 具有相同 Monitoring Key的 PCC规则共享该 Monitoring Key的用量阈值。
上述方案中, 所述 PCEF向 PCRF上报用量的触发条件为: 当需要用量 上报事件被触发时; 或者, 共享所述 Monitoring Key对应的所有 PCC规则 被删除或去激活; 或者, 终结所述 IP-CAN会话时; 或者, 所述 PCRF请求 所述 PCEF上艮时。
上述方案中, 该方法还包括: 在共享所述总允许用量的所有用户的所 有 IP-CAN会话都终结时,所述 PCRF将剩余的总允许用量保存到所述 SPR 中。
本发明提供的一种实现用量监测控制的系统, 至少包括 PCRF、 PCEF, 其中,
PCRF, 用于 PCRF根据获得的多用户共享的总允许用量, 为每个共享 该用量的 IP-CAN会话或业务数据流制定用量监测策略;向 PCEF下发用量 监测策略,接收 PCEF上报的用量,从多用户共享的所述总允许用量中扣除 消耗的用量;
PCEF, 用于根据所述 PCRF下发的用量监测策略执行用量监测, 并向 所述 PCRF上报用量。
上述方案中, 该系统还包括 SPR, 用于保存多用户共享的所述总允许 用量以及共享所述总允许用量的用户标识。
上述方案中, 所述 PCRF, 还用于在共享所述总允许用量的所有用户的 所有 IP-CAN会话都终结时, 将剩余的总允许用量保存到 SPR。
从上述本发明提供的技术方案可以看出, 包括 PCRF根据获得的多用 户共享的总允许用量,为每个共享该总允许用量的 IP-CAN会话或业务数据 流设置用量监测策略; PCEF根据 PCRF下发的用量监测策略执行用量监测, 并向 PCRF上报用量; 当 PCRF收到用量报告后,从多用户共享的总允许用 量中扣除消耗的用量。 本发明方法在多个用户共享总允许用量时, 给出了 PCRF同时对多个用户根据总允许用量进行用量监测的实现方案,避免了策 略计费控制沖突。 附图说明
图 1为现有 PCC组成架构示意图; 图 2为本发明实现用量监测控制的方法的流程图;
图 3为本发明实现用量监测控制的方法的实施例的流程示意图; 图 4为图 3中, 实现用量上报的第一实施例的流程示意图;
图 5为图 3中, 实现用量上报的第二实施例的流程示意图;
图 6为图 3中, 实现用量上报的第三实施例的流程示意图。 具体实施方式
图 2为本发明实现用量监测控制的方法的流程图, 如图 2所示, 包括: 步骤 200: PCRF根据获得的多用户共享的总允许用量, 为每一个共享 该总允许用量的 IP-CAN会话或业务数据流制定用量监测策略, 并向 PCEF 下发用量监测策略;
这里, 在用量监测策略中包含有 PCRF 为每一个共享该总允许用量的 IP-CAN会话或业务数据流分配的用量阈值;
本步骤中, PCRF从 SPR中获取多用户共享的总允许用量, 该总允许 用量包含在 SPR返回的用户的签约信息中; 同时, SPR还向 PCRF返回共 享该总允许用量的用户标识列表;
PCRF根据返回的签约信息制定用量监测策略,其中用量监测策略包括 事件触发器如用量上报( Usage— Report )事件、 针对某 IP-CAN会话或某些 具体业务数据流的用量监测策略, PCRF根据获得的总允许用量分配用量阈 值, 用量阈值<=总允许用量。 其中, 用量阈值可以是针对某 IP-CAN会话 的所有业务数据流,也可以是针对某 IP-CAN会话中的一个业务数据流或多 个业务数据流。如果 PCRF针对某 IP-CAN会话的所有业务数据流进行监测, 则 PCRF不将 Monitoring Key包含在 PCC规则中;如果 PCRF针对某 IP-CAN 会话的某些业务数据流进行监测, 则 PCRF将 Monitoring Key包含在业务 数据流对应的 PCC规则中下发,具有相同 Monitoring Ke 的 PCC规则共享 该 Monitoring Key的用量阚值。 步骤 201 : PCEF根据 PCRF下发的用量监测策略执行用量监测, 并向 PCRF上报用量。
本步骤中, 这里 PCEF上报用量, 可以是当需要用量上报事件被触发, 比如某个 Monitoring Key (包括 IP-CAN会话级和业务数据流级 )监测的用 量达到阈值等; 也可以由终结 IP-CAN会话来触发; 还可以由 PCRF请求 PCEF上4艮等等。
步驟 202: 当 PCRF收到 PCEF上报的用量后, 从多用户共享的总允许 用量中扣除消耗的用量。
本发明方法还包括: 在共享所述总允许用量的所有用户的所有 IP-CAN 会话都终结时, 将剩余的总允许用量保存到 SPR中。
针对本发明方法, 还提供一种实现用量监测控制的系统, 至少包括 PCRF和 PCEF, 其中,
PCRF, 用于根据获得的多用户共享的总允许用量, 为每一个共享该用 量的 IP-CAN会话或业务数据流制定用量监测策略;向 PCEF下发用量监测 策略,接收 PCEF上报的用量,从多用户共享的总允许用量中扣除消耗的用 量;
PCEF,用于根据 PCRF下发的用量监测策略执行用量监测,并向 PCRF 上报用量。
本发明系统还包括 SPR, 用于向 PCRF提供多用户共享的总允许用量 以及共享该总允许用量的用户标识。
PCRF, 还用于在共享某总允许用量的所有用户的所有 IP-CAN会话都 终结时, 将剩余的总允许用量保存到 SPR。
下面结合实施例对本发明方法进行详细描述。
图 3 为本发明实现用量监测控制的方法的实施例的流程示意图, 本实 施例描述的是用户设备 1 ( UE1 )和 UE2共享一 PDN的总允许用量( TAU, Total Allowanced usage )或一 PDN的一些具体业务数据流的 TAU; 在 UE1 和 UE2分别建立 IP-CAN会话后中, PCRF根据 TAU对 UE1和 UE2建立 的 IP-CAN会话进行用量监测控制, 如图 3所示, 包括:
步骤 300: 在 UE1请求建立 IP-CAN会话 1的过程中, 向 PCEF1发送 IP-CAN会话建立请求消息,在 IP-CAN会话建立请求消息中携带有 UE1的 用户标识 1和请求接入的 PDN网络的 PDN标识 1。
步驟 301 : PCEF1向 PCRF发送 IP-CAN会话建立指示消息,在 IP-CAN 会话建立指示消息中携带有用户标识 1 , PDN标识 1和为 UE1分配的 IP地 址 1 ( IP Address 1 )。
步驟 302: PCRF向 SPR发送签约文档请求, 在签约文档请求中携带有 用户标识 1和 PDN标识 1。
步骤 303: SP 根据用户标识 1和 PDN标识 1在返回的签约文档应答 中携带 UE1的签约信息;
本步骤中, 由于 UE1与 UE2共享针对 PDN标识 1的总允许用量或是 针对 PDN标识 1的一些具体业务流的总允许用量, 因此, SPR将该总允许 用量包含在签约信息中并携带在签约文档应答中返回给 PCRF, 同时将共享 该总允许用量的用户标识列表即用户标识 1和用户标识 2携带在签约文档 应答中返回。
步骤 304: PCRF根据返回的包括有总允许用量的签约信息制定用量监 测策略, 并在向 PCEF1返回的 IP-CAN会话建立确认消息中携带用量监测 策略;
其中用量监测策略包括事件触发器 Usage_Report、 针对 IP-CAN会话 1或某些具体业务数据流的用量监测策略。 PCRF根据获得的总允许用量分 配 UE1的用量阈值 UT1, 且 UT1<=TAU。
这里, UT1可以是针对 IP-CAN会话 1所有业务数据流的, 也可以是 针对 IP-CAN会话 1中的一个业务数据流或多个业务数据流的。 如果 PCRF 针对 IP-CAN会话 1所有业务数据流进行监测,则 PCRF不将 Monitoring Key 包含在 PCC规则中; 如果 PCRF针对 IP-CAN会话 1的某些业务数据流进 行监测, 则 PCRF将 Monitoring Key包含在业务数据流对应的 PCC规则中 下发, 具有相同 Monitoring Ke 的 PCC规则共享该 Monitoring Key的用量 阈值。 PCEF1根据 PCRF下发的用量监测策略执行用量监测。
步驟 305: PCEF1向 UE1返回 IP-CAN会话建立应答,在 IP-CAN会话 建立应答中携带有 IP Address 1。
通过步骤 300〜步骤 305后 , PCEF1根据 PCRF下发的用量监测策略对 UE1建立的 IP-CAN会话 1进行用量监测。
步骤 306: 在 UE2请求建立 IP-CAN会话 2的过程中, 向 PCEF2发送 IP-CAN会话建立请求消息, 请求建立 IP-CAN会话 2, 在 IP-CAN会话建 立请求消息中携带有 UE2的用户标识 2和请求接入的 PDN网络的 PDN标 识 1。
这里, PCEF1 和 PCEF2 可能相同, 也可能不相同。 本实施例中 _设
PCEF1和 PCEF2不同。
步驟 307: PCEF2向 PCRF发送 IP-CAN会话建立指示消息,在 IP-CAN 会话建立指示消息中携带有用户标识 2 , PDN标识 1 和为 UE2分配的 IP Address2。
步骤 308: PCRF向 SPR发送签约文档请求, 在签约文档请求中携带有 用户标识 2和 PDN标识 1。
步骤 309: SP 根据用户标识 1和 PDN标识 1在返回的签约文档应答 中携带 UE2的签约信息;
本步骤中, 由于 SPR在步骤 303中已经下发了 UE1和 UE2共享的总 允许用量, 以及共享该总允许用量的用户标识列表, 因此, 本步骤中, SPR 可以不返回上述签约信息。
步骤 310: PCRF根据 UE2的签约信息制定用量监测策略,并在向 PCEF2 返回的 IP-CAN会话建立确认消息中携带用量监测策略;
其中用量监测策略包括事件触发器 --Usage_Report。 PCRF根据用户标 识列表, 判断出 UE1建立的 IP-CAN会话 1和 UE2建立的 IP-CAN会话 2 共享总允许用量。 PCRF 根据 TAU 分配 UE2 的用量阈值 UT2 且 UT2+UT1<=TAU。
这里, UT2可以是针对 IP-CAN会话 2所有业务数据流的, 也可以是 针对 IP-CAN会话 2中的一个业务流或多个业务数据流的。如果 PCRF针对 IP-CAN会话 2所有业务数据流进行监测, 则 PCRF不将 Monitoring Key包 含在 PCC规则中; 如果 PCRF针对 IP-CAN会话 2的某些业务数据流进行 监测, 则 PCRF将 Monitoring Key包含在业务数据流对应的 PCC规则中下 发, 具有相同 Monitoring Key的 PCC规则共享该 Monitoring Key的用量阈 值。 PCEF2根据 PCRF下发的用量监测策略执行用量监测 .
步骤 311 : PCEF2向 UE2返回 IP-CAN会话建立应答,在 IP-CAN会话 建立应答中携带有 IPAddress2。
至此, UE2建立了 IP-CAN会话 2, PCRF从 SPR中获取总允许用量, 并且分别向 PCEF1和 PCEF2下发用量监测策略, 其中包括用量阈值 UT1 和 UT2。 PCEF1和 PCEF2执行用量监测。
图 4为图 3中, 实现用量上 4艮的第一实施例的流程示意图, 如图 4所 示, 包括:
步骤 400: PCEF1检测到需要用量上报时间被触发,该触发可以是某个 Monitoring Key (包括 IP-CAN会话级和业务数据流级)监测的用量达到阈 值或与某个 Monitoring Key对应的所有 PCC规则被删除或去激活。
步骤 401: PCEF1向 PCRF发送 IP-CAN会话修改指示消息,在 IP-CAN 会话修改指示消息中携带有事件触发器取值包含 Usage— Report, 以及报告 的用量消耗值 ( U V1, Usage Report Value 1 )。若触发条件是某个 Monitoring Key监测的用量达到阈值, 则 URV1 = UT1; 若触发条件与某个 Monitoring Key对应的所有 PCC规则被删除或去激活, 则 URV 1 < = UT 1。
步骤 402: PCRF从总允许用量中扣除报告的用量消耗值 URV1 , 即将
TAU更新为 ( TAU-URV1 ) 的值。 如果 PCRF决定需要继续进行用量监测, 并且此时的 TAU-UT2>0, 那么, PCRF将分配新的用量阈值 UTT且 UT1'<= TAU-UT2;
PCRF向 PCEF1返回 IP-CAN会话修改确认消息。如果 PCRF分配了新 的用量阈值 UTT, 则在 IP-CAN会话修改确认消息携带 UT1'。
步骤 403: 如果 PCRF下发了新的用量阈值 UTT, 则 PCEF1继续执行 用量监测; 如果 PCRF未下发新的用量阈值, 则 PCEF1不再执行用量监测。 图 5为图 3中, 实现用量上 4艮的第二实施例的流程示意图, 如图 5所 示, 包括:
步骤 500: PCEF1检测到需要终结 IP-CAN会话 1被触发, 该触发可能 来自于其它网元, UE1或是 PCEF1 自身。
步驟 501 : PCEF1向 PCRF发送 IP-CAN会话终结指示消息,在 IP-CAN 会话终结指示消息中携带有每个进行用量监测的 Monitoring Key的用量消 耗值, 图 3所示的实施例中为 URV1。 此时, URV1< = UT1。
步骤 502: PCRF从总允许用量中扣除上报的用量消耗值 URV1 , 即将 总允许用量更新为( TAU-URV1 )的值。 PCRF向 PCEF1返回 IP-CAN会话 终结确认消息。 由于此时 UE2的 IP-CAN会话 2还在使用该总允许用量, 因此, PCRF不会向 SPR上报当前剩余的总允许用量。
步驟 503: PCEF2检测到需要终结 IP-CAN会话 2被触发, 该触发可能 来自于其它网元, UE2或是 PCEF2 自身。 步骤 504: PCEF2向 PCRF发送 IP-CAN会话终结指示消息,在 IP-CAN 会话终结指示消息中携带有每个进行用量监测的 Monitoring Key的用量消 耗值, 图 3所示的实施例中为 URV2。 此时, URV2< = UT2。
步骤 505: PCRF从总允许用量中扣除上报的用量消耗值 URV2, 即将 TAU更新为 TAU-URV2。 PCRF向 PCEF2返回 IP-CAN会话终结确认消息。
步骤 506: PCRF获知共享该总允许用量的所有用户即 UE1和 UE2的 所有 IP-CAN会话即 IP-CAN会话 1和 IP-CAN会话 2都已经终结, PCRF 向 SPR发送取消签约通知请求消息, 在取消签约通知请求消息中携带有剩 余的总允许用量。
步驟 507: SPR向 PCRF返回取消签约通知应答消息。
图 6为图 3中, 实现用量上 · ^的第三实施例的流程示意图, 如图 6所 示, 包括:
步骤 600: PCRF检测到需要 PCEF1上报用量消耗事件被触发。
步骤 601 : PCRF向 PCEF1发送用量上报请求消息, 请求 PCEF1上报 用量消耗, 在用量上报请求消息中携带有需要上报的 Monitoring Key, 该 Monitoring Key是 PCRF之前下发的, 可以是针对 IP-CAN会话 1的所有业 务数据流的,也可以是针对 IP-CAN会话 1的一个业务数据流或一组业务数 据流的。
步骤 602: PCEF1向 PCRF发送用量上报应答消息,在用量上报应答消 息中携带有需要上报的 Monitoring Key 的用量消耗值 URV1。 此时, URVK=UT1„
步骤 603: PCRF从要求上报的 Monitoring Key的总允许用量中扣除上 报的用量消耗值 U V 1 , 即将总允许用量更新为 ( TAU - URV 1 ) 的值。
上述图 3〜图 6所描述的几个实施例中, 是以 UE1和 UE2共享总允许 用量, 并且 UE1和 UE2分别针对一个 APN (即 PDN标识 1 )都只建立一 个 IP-CAN会话的情况。 本发明方法, 同样适用于 UE1和 UE2分别针对一 个 APN (即 PDN标识 1 ) 建立多个 IP-CAN会话的情况, 按照本发明方法 的具体实现是本领域技术人员根据前面的实施例容易得到的, 这里不再赘 述。 只要 PCRF 获得了共享的总允许用量和共享用户标识列表, 将一个用 户针对同一个 APN的所有 IP-CAN会话看成一个整体进行用量分配即可。 在 PCRF判断出共享该总允许用量的所有用户的所有 IP-CAN会话都终结 时, PCRF才将剩余的总允许用量保存到 SPR。
在其他实施中, 共享签约信息 (包括多用户共享的总允许用量以及该 总允许用量的用户标识列表) 的保存可以通过用户数据融合 ( UDC , User Data Convergence ) 架构实现, SPR作为 UDC架构的前端。 当然共享签约 信息也可以保存在其他数据库中, 不仅限于 SPR。
以上实施例虽仅描述了两个用户共享签约的总允许用量时, 用量监测 控制的实现流程。 两个以上用户共享签约的总允许用量时, 用量监测控制 的流程也是类似的。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种实现用量监测控制的方法, 其特征在于, 该方法包括: 策略控制与计费规则功能实体(PCRF )根据获得的多用户共享的总允 许用量, 为每个共享该总允许用量的 IP连接接入网 ( IP-CAN )会话或业务 数据流制定用量监测策略;
策略和计费执行功能实体(PCEF )根据 PCRF下发的用量监测策略执 行用量监测, 并向 PCRF上报用量; 当 PCRF收到 PCEF上报的用量后, 从 多用户共享的所述总允许用量中扣除消耗的用量。
2、 根据权利要求 1所述的方法, 其特征在于, 所述用量监测策略中包 含有所述 PCRF为每个共享所述总允许用量的 IP-CAN会话或业务数据流分 配的用量阈值。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 当所述多用户中存 在第一用户请求建立 IP-CAN会话时,所述 PCRF获得多用户共享的所述总 允许用量包括:
所述 PCRF从用户签约数据库( SPR )中获取多用户共享的所述总允许 用量, 所述总允许用量包含在所述 SPR返回的用户的签约信息中; 且所述 SPR向所述 PCRF返回共享所述总允许用量的用户标识列表。
4、 根据权利要求 3所述的方法, 其特征在于, 所述 PCRF根据获得的 多用户共享的总允许用量,为每个共享该总允许用量的 IP-CAN会话或业务 数据流制定用量监测策略, 为: 所述 PCRF根据获得的多用户共享的所述 总允许用量, 为所述多用户中的第一用户分配第一用量阈值, 所述第一用 量阚值小于等于所述总允许用量。
5、 根据权利要求 4所述的方法, 其特征在于, 当所述多用户中存在除 所述第一用户之外的第二用户请求建立 IP-CAN会话时,所述 PCRF根据获 得的多用户共享的总允许用量,为每个共享该总允许用量的 IP-CAN会话或 业务数据流制定用量监测策略, 为:
所述 PCRF根据用户标识列表,确定所述第一用户建立的 IP-CAN会话 和第二用户建立的 IP-CAN会话共享所述总允许用量;
所述 PCRF根据所述总允许用量分配第二用户的第二用量阈值, 且所 述第一用量阈值与第二用量阈值之和小于等于所述总允许用量。
6、 根据权利要求 4或 5所述的方法, 其特征在于, 所述第一用量阈值 或第二用量阈值针对任意一个 IP-CAN会话的所有业务数据流,或者针对任 意一个 IP-CAN会话中的一个业务数据流或多个业务数据流。
7、 根据权利要求 6所述的方法, 其特征在于, 所述第一用量阈值或第 二用量阈值针对任意一个 IP-CAN会话的所有业务数据流时,所述 PCRF不 将监测键 ( Monitoring Key ) 包含在策略和计费控制 ( PCC )规则中;
所述第一用量阈值或第二用量阈值针对任意一个 IP-CAN会话的一个 业务数据流或多个业务数据流、 且不为所有业务数据流时, 所述 PCRF将 Monitoring Key 包含在业务数据流对应的 PCC 规则中下发, 具有相同 Monitoring Key的 PCC规则共享该 Monitoring Key的用量阈值。
8、 根据权利要求 7所述的方法, 其特征在于, 所述 PCEF向 PCRF上 报用量的触发条件为: 当需要用量上报事件被触发时; 或者, 共享所述 Monitoring Key对应的所有 PCC 规则被删除或去激活; 或者, 终结所述 IP-CAN会话时; 或者, 所述 PCRF请求所述 PCEF上报时。
9、 根据权利要求 1或 2所述的方法, 其特征在于, 该方法还包括: 在 共享所述总允许用量的所有用户的所有 IP-CAN会话都终结时, 所述 PCRF 将剩余的总允许用量保存到所述 SPR中。
10、 一种实现用量监测控制的系统, 其特征在于, 该系统至少包括 PCRF, PCEF, 其中,
PCRF, 用于 PCRF根据获得的多用户共享的总允许用量, 为每个共享 该用量的 IP-CAN会话或业务数据流制定用量监测策略;向 PCEF下发用量 监测策略,接收 PCEF上报的用量,从多用户共享的所述总允许用量中扣除 消耗的用量;
PCEF, 用于根据所述 PCRF下发的用量监测策略执行用量监测, 并向 所述 PCRF上报用量。
11、 根据权利要求 10所述的系统, 其特征在于, 该系统还包括 SPR, 用于保存多用户共享的所述总允许用量、 以及共享所述总允许用量的用户 标识。
12、 根据权利要求 10或 11所述的系统, 其特征在于, 所述 PCRF, 还 用于在共享所述总允许用量的所有用户的所有 IP-CAN会话都终结时,将剩 余的总允许用量保存到 SPR。
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