WO2009089776A1 - Procédé et appareil de maintenance des informations de fonction de règle de politique et de facturation - Google Patents

Procédé et appareil de maintenance des informations de fonction de règle de politique et de facturation Download PDF

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Publication number
WO2009089776A1
WO2009089776A1 PCT/CN2009/070048 CN2009070048W WO2009089776A1 WO 2009089776 A1 WO2009089776 A1 WO 2009089776A1 CN 2009070048 W CN2009070048 W CN 2009070048W WO 2009089776 A1 WO2009089776 A1 WO 2009089776A1
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WIPO (PCT)
Prior art keywords
pcrf
message
session
network
information
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Application number
PCT/CN2009/070048
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English (en)
French (fr)
Inventor
Yanglai Shuai
Peng Zhang
Wenruo Zhu
Tingting Deng
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 BRPI0907251-9A priority Critical patent/BRPI0907251B1/pt
Publication of WO2009089776A1 publication Critical patent/WO2009089776A1/zh

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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
    • 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
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24Accounting or billing

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a policy and charging rule function entity information maintenance method and apparatus.
  • PCRF Realm Policy and Charging Rules Function Entity, PCRF Realm
  • PCRF domain can contain multiple P CRFs.
  • DRA Diameter Routing Agent
  • DRA stores PCRF information such as the correspondence between the terminal and the PCRF.
  • PCRF information stored in the DRA will also increase.
  • spam information makes the DRA information maintenance very difficult, and it is easy to cause the DRA storage space to overflow.
  • the embodiment of the present invention provides a policy and charging rule function entity information maintenance method and device, which can delete the spam information in the DRA, avoids the impact of the spam information on the maintenance of the DRA information, and avoids the overflow of the DRA storage space. phenomenon.
  • the policy and charging rule function entity information maintenance method provided by the embodiment of the present invention includes:
  • the Diameter routing agent DRA receives a message, which is a message sent during a session termination between a network device and a policy and charging rule function entity PCRF or after a session is terminated; The DRA deletes the stored PCRF information corresponding to the information carried in the message.
  • a first module configured to store PCRF information
  • a second module configured to receive an externally transmitted message;
  • the message includes: a message transmitted during a session termination between a network device and a policy and charging rule function entity PCRF, or after the session is terminated, or roaming
  • the message transmitted by the network element in the network is visited;
  • the third module is configured to delete the PCRF information corresponding to the information carried in the message stored in the first module.
  • the technical solution provided by the embodiment of the present invention has the following beneficial effects. Because the message received by the Diameter routing agent is a message sent during the session termination process, the Diameter routing agent can delete the corresponding PCRF information stored in the session during the termination of the session. Therefore, the above technical solution can delete the spam information in the DRA in time during the session termination process, effectively avoiding the impact of the spam information on the maintenance of the DRA information, and effectively avoiding the overflow of the DRA storage space, and improving the maintainability of the DRA information. Sexuality improves the effective utilization of DRA storage space. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a flowchart of a method for maintaining PCRF information according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for maintaining PCRF information according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for maintaining PCRF information according to Embodiment 3 of the present invention.
  • FIG. 5 is a flowchart of a method for maintaining PCRF information according to Embodiment 5 of the present invention.
  • FIG. 6 is a flowchart of a method for maintaining PCRF information according to Embodiment 6 of the present invention.
  • FIG. 7 is a flowchart of a method for maintaining PCRF information according to Embodiment 7 of the present invention.
  • Embodiment 8 is a flowchart of a method for maintaining PCRF information according to Embodiment 8 of the present invention.
  • FIG. 9 is a schematic diagram of a Diameter routing agent according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of another method for maintaining PCRF information according to an embodiment of the present invention. Mode for carrying out the invention
  • the RF information can be called spam after the session is terminated. If the PCRF information corresponding to the session stored in the DRA can be deleted during the session termination process between the network device and the PCRF, the information storage amount in the DRA can be minimized, thereby facilitating information maintenance of the DRA. Conducive to the effective use of DRA storage space.
  • the network device in the embodiment of the present invention is a network device that needs to terminate the session with the PCRF.
  • the network device may be a GW or an AF. Of course, it may also be another network device.
  • the GW may be a Serving GW (Serving Gateway). ), PDN GW (Packet Data Network Gateway), access gateway (access gateway, aGW) of non-3GPP networks, etc.
  • WIMAX WIMAX
  • aGW can be Acce ss Service Network Gateway (ASN)
  • aGW In the non-3GPP network is CDMA2000 HRPD, aGW can be Packet Data Serving Node (PDSN); after non-3GPP network is IWLAN, aGW can be e volved Packet Data
  • PDSN Packet Data Serving Node
  • IWLAN IWLAN
  • the termination of the session between the network device and the PCRF may be termination of the session caused by various conditions, such as termination of the session due to detach (terminal backoff), and termination of the session due to handover.
  • the session termination here may be a session termination in a 3GPP-accessed system or a session termination in a non-3GPP-accessed system.
  • the embodiments of the present invention do not limit the specific expressions of the GW and the network device, nor the specific reasons for causing the session to terminate.
  • the GW in the following description of the flowchart is Serving.
  • the GW in the following description for the flowchart is a non-3GPP aGW or a Serving GW.
  • the PCRF information in the embodiment of the present invention may be correspondence information between the terminal and the PCRF.
  • the embodiment of the present invention does not limit the content specifically included in the PCRF information stored in the DRA.
  • a specific implementation manner of the PCRF information maintenance method is:
  • the Diameter routing agent DRA receives a message, and the message is terminated by a session between the network device and the policy and charging rule function entity PCRF.
  • the message sent in the process or after the session is terminated; the DRA deletes the stored PCRF information corresponding to the information carried in the message.
  • the above Diameter routing agent is a DRA that needs to perform PCRF information maintenance.
  • the above messages received by the DRA can be sent by various network entities, such as network devices that need to terminate the session, such as network elements in the home network.
  • the DRA After receiving the message, the DRA searches for the PCRF information corresponding to the information carried in the message, and deletes the found PCRF information.
  • the DRA that needs to perform the maintenance of the PCRF information in the foregoing embodiment may be a DRA in a non-roaming scenario or a DRA in a roaming scenario.
  • the DRA in the roaming scenario can be the home network DRA, the home network DRA, and the visited network DRA.
  • the PCRF information is stored in the DRA that is selected to participate in the PCRF selection. Therefore, the DRA that needs to perform PCRF information maintenance in the embodiment of the present invention is the DRA that participates in the PCRF selection.
  • the network device may send a message to the DRA during its session termination with the PCRF in order to cause the DRA to delete its stored PCRF information corresponding to the session.
  • the node device in the visited network may send a message to the h DRA after the session of the network device and the hPCRF needs to be terminated, so as to cause the hDRA to delete the stored PCRF information corresponding to the session.
  • the message here may be an information deletion request message dedicated to informing the DRA to delete the PCRF information, or may be a session termination request message, and may of course be other messages. Embodiments of the invention do not limit the specific name of the message.
  • the DRA with the responsibility of selecting the PCRF can act as a Redirect server, it can also act as an information query server, and can also act as a proxy agent, and act as the same role in the DRA.
  • the session termination process differs according to the session establishment process. Therefore, there are many different implementation processes for the technical solution of PCRF information maintenance provided by the embodiments of the present invention.
  • the PCRF information management method provided by the embodiment of the present invention will be described below by taking several typical session termination procedures as an example.
  • step 1 GW/AF (GW or AF) determines that it needs to terminate the session with the corresponding PCRF, and the GW/AF sends a session termination request to the PCRF to request termination of the GW/AF to the PCRF. Meeting Words.
  • GW/AF GW or AF
  • Step 2 The PCRF returns a session termination response message to the GW/AF after receiving the session termination request.
  • Step 3 The GW/AF sends an information deletion request message to the DRA to request the DRA to delete the stored PCRF information corresponding to the session.
  • the information deletion request message carries a unique identifier that needs to be deleted.
  • the parameter of the PCRF information which can be the UE ID (User Equipment Identity), UE IP
  • This parameter can also be UE IP Address, PDN
  • Step 4 The DRA deletes the PCRF corresponding to the parameter according to the parameter in the received information deletion request message.
  • Step 5 After deleting the PCRF information, the DRA returns a message deletion response message to the GW/AF. Thus the session was successfully terminated.
  • step numbers do not all represent the execution order of the operations.
  • steps 1 and 3 may be performed simultaneously, and for example, steps 2 and 4 may be omitted. order.
  • step 4 in Fig. 1 can be omitted.
  • FIG. 2 In an application scenario where the DRA is a Redirect server or an information query server and the terminal is roaming, an embodiment of the PCRF information maintenance process is shown in FIG. 2.
  • G W/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 1 may be used to implement PCRF information management.
  • both vDRA (destination network DRA) and hDRA (home network DRA) participate in PCRF selection, that is, both vDRA and hDRA have PCRF selection responsibilities;
  • vPCRF visited network PCRF
  • step 1 the GW/AF sends a session termination request to the vPCRF to request termination of the session between the GW/AF and the hPCRF.
  • Step 2 The vPCRF forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 3 After receiving the session termination request, the hPCRF returns a session termination response message to the vPCRF.
  • Step 4 After receiving the session termination response message, the vPCRF sends an information deletion request message to the hDRA to request to delete the hPCRF information corresponding to the session stored in the hDRA.
  • the parameter may be a UE ID, a UE IP Address APN, and may be a UE IP Address, a PDN ID, or the like.
  • Step 5 hDRA deletes the PCR corresponding to the parameter according to the parameter in the received information deletion request message.
  • Step 6 After deleting the PCRF information, hDRA returns a message deletion response message to the vPCRF.
  • Step 7 After receiving the information deletion response message, the vPCRF returns a session termination response message to the GW/AF.
  • Step 8 After receiving the session termination response message, the GW/AF sends an information deletion request message to the vDRA to request to delete the vPCRF information corresponding to the session stored in the vDRA.
  • the information deletion request message carries a parameter that can uniquely identify the PCRF information to be deleted, and the parameter may be a UE ID or a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like.
  • Step 9 The vDRA deletes the PCR F information corresponding to the parameter according to the parameter in the received information deletion request message.
  • Step 10 After deleting the PCRF information, the vDRA returns a message deletion response message to the GW/AF. Thus the session is successfully terminated.
  • step numbers do not all represent the execution order of the operations.
  • steps 2 and 4 may be performed simultaneously, and for example, steps 7 and 8 may be omitted. order.
  • steps 6 and 10 in Fig. 2 can be omitted.
  • FIG. 3 Another embodiment flow of PCRF information maintenance is shown in FIG. 3 in an application scenario in which the DRA is used as a Redirect server or an information query server and the terminal is roaming.
  • the GW/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 1 may be used to implement PCRF information management.
  • both vDRA and hDRA participate in PC RF selection, that is, vDRA and hDRA both have PCRF selection responsibilities; vDRA and hDRA have an interworking interface for message transmission between vDRA and hDRA.
  • step 1 The GW/AF sends a session termination request to the vPCRF to request termination of the session between the GW/AF and the hPC RF.
  • Step 2 The vPCRF forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 3 After receiving the session termination request, the hPCRF returns a session termination response message to the vPCRF.
  • Step 4 After receiving the session termination response message, the vPCRF returns a session termination response message to the GW/AF.
  • Step 5 The GW/AF sends an information deletion request message to the vDRA to request to delete the vPCRF information corresponding to the session stored in the vDRA.
  • the information deletion request message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID or a UE IP.
  • This parameter can also be UE IP Address, PDN ID, etc.
  • Step 6 The vDRA sends an information deletion request message to the hDRA to request to delete the hPCRF information corresponding to the session stored in the hDRA.
  • the information deletion request message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID or a UE IP.
  • This parameter can also be UE IP Address, PDN ID, etc.
  • Step 7 The hDRA deletes the PCR F information corresponding to the parameter according to the parameter in the received information deletion request message.
  • Step 8 After deleting the PCRF information, hDRA returns a message deletion response message to the vDRA.
  • Step 9 After receiving the information deletion response message, the vDRA deletes the PCRF information corresponding to the parameter according to the parameter in the received deletion request message.
  • Step 10 After deleting the PCRF information, the vDRA returns a message deletion response message to the GW/AF. Thus the session is successfully terminated.
  • step numbers do not all represent the execution order of the operations, for example, steps 1 and 5 may be performed simultaneously, and for example, steps 6 and 9 may also be the same. ⁇ Execution.
  • step 8 and step 10 in Fig. 3 can be omitted.
  • FIG. 4 In another application scenario where the DRA is used as a Redirect server or an information query server and the terminal is roaming, another embodiment of the PCRF information maintenance process is shown in FIG.
  • the GW/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 1 may be used to implement PCRF information management.
  • vDRA does not participate in PCRF selection
  • hDRA participates in PCRF selection, that is, vDRA does not have PCRF selection responsibility, hDRA has PCRF selection responsibility
  • vPCRF and hDRA have an interworking interface for vPCRF and Message transfer between hDRAs.
  • step 1 GW/AF sends a session termination request to the vPCRF to request termination of GW/AF and hPC Session between RFs.
  • Step 2 The vPCRF forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 3 After receiving the session termination request, the hPCRF returns a session termination response message to the vPCRF.
  • Step 4 After receiving the session termination response message, the vPCRF sends an information deletion request message to the hDRA to request to delete the hPCRF information corresponding to the session stored in the hDRA.
  • the information deletion request message carries a parameter that can uniquely identify the PCRF information to be deleted, and the parameter may be a UE ID or a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like.
  • Step 5 The hDRA deletes the PCR F information corresponding to the parameter according to the parameter in the received information deletion request message.
  • Step 6 After deleting the PCRF information, hDRA returns a message deletion response message to the vPCRF.
  • Step 7 After receiving the information deletion response message, the vPCRF returns a session termination response message to the GW/AF. Thus the session is successfully terminated.
  • step numbers do not all represent the execution order of the operations, for example, steps 2 and 4 may be performed simultaneously, and for example, steps 6 and 7 may be omitted. Order and so on.
  • step 6 in Fig. 4 can be omitted.
  • step 1 GW/AF (GW or AF) determines that it needs to terminate its session with the corresponding PCRF, and the GW/AF sends a session termination request to the DRA to request termination of the GW/AF to the PCRF.
  • Step 2 The DRA forwards the session termination request to the PCRF upon receiving the session termination request.
  • Step 3 After receiving the session termination request, the PCRF returns a session termination response message to the DRA.
  • Step 4 After receiving the session termination response message, the DRA deletes the PCRF information corresponding to the parameter according to the parameter in the received session termination request message or the session termination response message.
  • the session termination request message or the session termination response message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID, a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like. .
  • Step 5 After deleting the PCRF information, the DRA returns a session termination response message to the GW/AF. Thus The words were successfully terminated.
  • step numbers do not all represent the execution order of the operations.
  • steps 2 and 4 may be performed simultaneously, and for example, steps 3 and 4 may be omitted. order.
  • FIG. 6 In an application scenario in which the DRA acts as a Proxy proxy and the terminal is roaming, an embodiment of the PCRF information maintenance process is shown in FIG. 6.
  • the GW/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 5 may be used to implement PCRF information management.
  • both vDRA and hDRA participate in the PCRF selection, that is, both vDRA and hDRA have PCRF selection responsibilities; there is an interworking interface between vPCRF and hDRA to perform message transmission between vPCRF and hDR A.
  • step 1 the GW/AF sends a session termination request to the vDRA to request termination of the session between the GW/AF and the hP CRF.
  • Step 2 The vDRA forwards the received session termination request to the vPCRF to request termination of the session.
  • Step 3 The vPCRF forwards the received session termination request to the hDRA to request termination of the session.
  • Step 4. hDRA forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 5 After receiving the session termination request, the hPCRF returns a session termination response message to the hDRA.
  • Step 6 After receiving the session termination response message, the hDRA deletes the PCRF information corresponding to the parameter according to the parameters in the received session termination request message or the session termination response message.
  • the session termination request message or the session termination response message carries a parameter that can uniquely identify the PCRF information to be deleted, and the parameter may be a UE ID or a UE IP Address APN; the parameter may also be a UE IP.
  • Step 7 After deleting the PCRF information, hDRA returns a session termination response message to the vPCRF.
  • Step 8 The vPCRF forwards the received session termination response message to the vDRA.
  • Step 9 After receiving the session termination response message, the vDRA deletes the PCRF information corresponding to the parameter according to the parameter in the received session termination request message or the session termination response message.
  • the session termination request message or the session termination response message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID, a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like.
  • Step 10 After deleting the PCRF information, the vDRA returns a session termination response message to the GW/AF. Thus the session is successfully terminated.
  • step numbers do not all represent the execution order of the operations, for example, steps 4 and 6 may be performed simultaneously, and for example, steps 2 and 9 may also be the same. ⁇ Execution.
  • FIG. 7 In another application scenario in which the DRA acts as a Proxy proxy and the terminal is roaming, another embodiment of the PCRF information maintenance process is shown in FIG.
  • the GW/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 5 may be used to implement PCRF information management.
  • vDRA does not participate in PCRF selection
  • hDRA participates in PCRF selection, that is, vDRA does not have PCRF selection responsibility, hDRA has PCRF selection responsibility
  • vDRA and hDRA have an interworking interface for vDRA and Message transfer between hDRAs.
  • step 1 the GW/AF sends a session termination request to the vDRA to request termination of the session between the GW/AF and the hP CRF.
  • Step 2 The vDRA forwards the received session termination request to the hDRA to request termination of the session.
  • Step 3 hDRA forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 4 After receiving the session termination request, the hPCRF returns a session termination response message to the hDRA.
  • Step 5 After receiving the session termination response message, the hDRA deletes the PCRF information corresponding to the parameter according to the parameter in the received session termination request message or the session termination response message.
  • the session termination request message or the session termination response message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID, a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like. .
  • Step 6 After deleting the PCRF information, the hDRA returns a session termination response message to the vDRA.
  • Step 7 The vDRA forwards the received session termination response message to the GW/AF. Thus the session is successfully terminated
  • step numbers do not all represent the execution order of the operations, for example, steps 3 and 5 can be performed simultaneously, and for example, steps 5 and 6 can also be the same. ⁇ Execution.
  • FIG. 8 the GW/AF may be located in the visited network. If the GW/AF is located in the home network, the flow in the above FIG. 5 may be used to implement PCRF information management.
  • vDRA does not participate in PCRF selection
  • hDRA participates in PCRF selection, that is, vDRA does not have PCRF selection responsibility, hDRA has PCRF selection responsibility
  • vPCRF and hDRA have an interworking interface for vPCRF and Message transfer between hDRAs.
  • step 1 the GW/AF sends a session termination request to the vPCRF to request termination of the session between the GW/AF and the hPCRF.
  • Step 2 The vPCRF forwards the received session termination request to the hDRA to request termination of the session.
  • Step 3 The hDRA forwards the received session termination request to the hPCRF to request termination of the session.
  • Step 4 After receiving the session termination request, the hPCRF returns a session termination response message to the hDRA.
  • Step 5 After receiving the session termination response message, the hDRA deletes the PCRF information corresponding to the parameter according to the parameter in the received session termination request message or the session termination response message.
  • the session termination request message or the session termination response message carries a parameter that can uniquely identify the PCRF information that needs to be deleted, and the parameter may be a UE ID, a UE IP Address APN; the parameter may also be a UE IP Address, a PDN ID, or the like. .
  • Step 6 After deleting the PCRF information, hDRA returns a session termination response message to the vPCRF.
  • Step 7 The vPCRF forwards the received session termination response message to the GW/AF. Thus the session is successfully terminated
  • step numbers do not all represent the execution order of the operations, for example, steps 3 and 5 may be performed simultaneously, and for example, steps 5 and 6 may also be the same. ⁇ Execution.
  • the DRA provided by the embodiment of the present invention is as shown in FIG. 9.
  • the DRA in FIG. 9 includes: a first module, a second module, and a third module, and the DRA may further optionally include: a fourth module and a third Five modules.
  • the first module stores PCRF information, and the PCRF information may be correspondence information between the terminal and the PCRF.
  • the PCRF information stored in the first module can be set by static configuration or dynamically configured.
  • the dynamic configuration mode such as the DRA, allocates the PCRF according to a predetermined policy, and after the allocation is completed, stores the allocated PCRF information in the first module.
  • the second module is used to receive messages from external DRA transmissions. For example, the second module receives the message transmitted by the network device in the non-roaming scenario; for example, the second module receives the message transmitted by the visited network in the roaming scenario.
  • the message transmitted from the network is visited, such as a message transmitted by the visited network DRA during the termination of the session, a message transmitted by the visited network PCRF during the termination of the session, and the like.
  • the message received by the second module is a message transmitted by the visited network
  • the DRA where the second module is located is located in the home network.
  • the network device here is a network device that establishes a session with the PCRF.
  • the network device can send a message to DR A during the termination of the session.
  • the message received by the second module may be a session termination request message or an information deletion request message.
  • step 1 to step 2 When the message received by the second module is a session termination request transmitted by the visited network DRA, the corresponding content described in the above FIG. 7 (step 1 to step 2) may be applied, and the description will not be repeated here.
  • the third module determines that the PCRF information needs to be deleted according to the information carried in the message received by the second module, and then deletes the message stored in the first module and received by the second module.
  • the information corresponds to the PCRF information.
  • the fourth module is configured to return a response message to the outside of the DRA where the third module deletes the PCRF information, for example, when the message received by the second module is transmitted by the network device, the fourth module sends network
  • the network device returns a response message; for example, when the message received by the second module is transmitted by the visited network, the fourth module returns a response message to the visited network (the visited network DRA, the visited network PCRF, etc.).
  • the response message here is a response message corresponding to the message received by the second module. If the second module receives the information deletion request message, the fourth module returns a message deletion response message; and the second module receives the session termination request message. , the fourth module returns a session termination response message. Specifically, as described in the above method embodiment, the description is not repeated here.
  • the fifth module deletes the response message transmitted in the first module after receiving the response message transmitted outside the DRA in which it is located.
  • PCRF information corresponding to the session that needs to be terminated.
  • the fifth module in the vDRA deletes the vPCRF information stored in the first module; for example, as shown in FIG. 6, the vDRA
  • the five modules delete the vPCRF information stored in the first module. Specifically, as described in the above embodiment of the method, the description will not be repeated here.
  • the fourth module After the fifth module deletes the PCRF information, the fourth module returns a corresponding response message to the network device, such as returning a session termination response message to the network device, and returning a message deletion response message to the network device. Specifically, as described in the above method embodiment, the description is not repeated here.
  • step 1 the PCRF determines the termination of all sessions bound to the predetermined user service.
  • All sessions here for a predetermined subscriber may include one or more of the following: IP-Connectivity Access Netowork Session (access network IP connectivity session, IP-CAN session), GW
  • a session serving a predetermined user may have one session, or two sessions may exist simultaneously, and three sessions may exist simultaneously, and the session serving the predetermined user includes multiple sessions.
  • the PCRF must determine if the last session also needs to be terminated, or has terminated.
  • the predetermined user here can pass the UE ID, UE IP
  • the Address is uniquely determined and can also be uniquely determined by the UE ID, UE IP Address, and APN.
  • Step 2 After determining that all the sessions have been terminated or need to be terminated, the PCRF sends a message to the DRA. In addition to the request message, the DRA is notified to delete the saved PCRF information corresponding to the session.
  • the information deletion request message carries a parameter that can uniquely identify the PCRF information to be deleted, and the parameter may be the UE IDs UE IP Address s APN; the parameter may also be the UE IP Address, the UE ID, or the like.
  • Step 3 The DRA deletes the information carried in the request message according to the received information, and deletes the corresponding P CRF information stored therein.
  • Step 4 After deleting the PCRF information, the DRA returns a message deletion response message to the PCRF.
  • PCRF and DRA in Figure 10 above may be PCRF and DRA in a non-roaming scenario.
  • the PCRF in Figure 10 above may be a vPCRF, and the DRA may be a vDRA.
  • the PCRF in Figure 10 above may be hPCRF, and the DRA may be hDRA.
  • the PCRF may terminate all the sessions served for the predetermined user after transmitting the information deletion request message; All sessions serving the predetermined user may be terminated at the same time as the message deletion request message is sent, and the PCRF may also terminate all sessions served for the predetermined user after receiving the message deletion response message returned by the DRA.
  • the embodiment of the present invention does not limit the specific content of the PCRF information stored in the DRA, nor does it restrict the specific message used by the PCRF to the DRA, and the information specifically carried in the information deletion request message. Moreover, this implementation is applicable regardless of whether the DRA acts as a Redirect server, as an Information Query Server, or as a Proxy Agent.
  • the PCRF in the embodiment of the present invention includes: a determination module and a notification module.
  • the PCRF can also optionally include a receiving module.
  • the judging module judges the termination of all sessions to which it is bound to serve the predetermined user.
  • the intended user here is a user.
  • the termination here can be whether it needs to be terminated, whether it has been terminated, and so on.
  • All sessions here for a predetermined subscriber may include one or more of the following sessions: IP-CAN session, GW
  • a session serving a predetermined user may have one session, or two sessions may exist simultaneously, and three sessions may exist simultaneously, and the session serving the predetermined user includes multiple sessions.
  • the judgment module must judge whether the last one will The words also need to be terminated, or have been terminated.
  • the predetermined user here can pass the UE ID, UE IP
  • the Address is uniquely determined and can also be uniquely determined by the UE ID, UE IP Address, and APN.
  • the notification module notifies the Diamet er routing agent to delete the PCRF information corresponding to the session after the determining module determines that all the sessions have been terminated or need to be terminated.
  • the notification sent by the notification module may be a deletion request message, where the information deletion request message carries a parameter that can uniquely identify the PCRF information to be deleted, and the parameter may be a UE ID or a UE IP Address APN; the parameter may also be a UE IP. Address, UE ID, etc.
  • the DRA deletes the corresponding PCRF information stored according to the information carried in the received information deletion request message, and returns the information deletion response message to the PCRF after deleting the PCRF information, that is, the DRA carries the information according to the information deletion request message.
  • the parameter that uniquely identifies the PCRF information to be deleted deletes the PCRF information corresponding to the parameter.
  • the receiving module receives the message deletion response message returned by the DRA.

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Description

说明书 策略和计费规则功能实体信息维护方法和装置
[1] 本申请要求于 2008年 1月 7日提交中国专利局、 申请号为 200810055715.1、 发明 名称为 "策略和计费规则功能实体信息维护方法和装置 "的中国专利申请的优先权 , 其全部内容通过引用结合在本申请中。
[2] 技术领域
[3] 本发明涉及网络通讯技术领域, 具体涉及策略和计费规则功能实体信息维护方 法和装置。
[4] 发明背景
[5] 在演进的网络如移动通信网络与宽带无线接入技术融合的网络中, 一个 Policy and Charging Rule
Function (策略和计费规则功能实体, PCRF) Realm (PCRF域) 可以包含多个 P CRF。 PCRF Realm由 Diameter Routing
Agent (Diameter路由代理, DRA) 管理。 在 GW (网关) 、 AF (应用服务器) 等设备与 PCRF建立会话过程中, 需要向 DRA査询, 以获取 PCRF信息。
[6] 在实现本发明的过程中, 发明人发现: DRA中存储有 PCRF信息如终端与 PCRF 的对应关系, 随着终端访问次数的增加, DRA中存储的 PCRF信息也会越来越多 , 然而, DRA中存储的这些 PCRF信息中存在没有用处的垃圾信息, 这些垃圾信 息会使 DRA的信息维护变得非常困难, 且容易使 DRA的存储空间产生溢出现象
[7] 发明内容
[8] 本发明实施方式提供策略和计费规则功能实体信息维护方法和装置, 可及吋删 除 DRA中的垃圾信息, 避免了垃圾信息对 DRA信息维护的影响, 且避免了 DRA 存储空间溢出的现象。
[9] 本发明实施方式提供的策略和计费规则功能实体信息维护方法, 包括:
[10] Diameter路由代理 DRA接收消息, 所述消息为在网络设备与策略和计费规则功 能实体 PCRF之间的会话终止过程中或者会话终止后发送的消息; 所述 DRA删除其存储的与所述消息中携带的信息对应的 PCRF信息。
本发明实施方式提供的 Diameter路由代理, 包括:
第一模块, 用于存储 PCRF信息;
第二模块, 用于接收外部传输来的消息; 所述消息包括: 在网络设备与策略和计费 规则功能实体 PCRF之间的会话终止过程中或者会话终止后传输来的消息, 或者, 在漫 游场景下、 在网络设备与 PCRF之间的会话终止过程中或者会话终止后拜访网络中的网 元传输来的消息;
第三模块, 用于删除第一模块中存储的与所述消息中携带的信息对应的 PCRF信息。 本发明实施例提供的技术方案具有如下有益效果, 由于 Diameter路由代理接收到的 消息为会话终止过程中发送的消息, 因此, Diameter路由代理能够在终止会话过程中及 时删除其存储的对应的 PCRF信息; 从而通过上述技术方案能够在会话终止过程中及时 删除 DRA中的垃圾信息, 有效避免了垃圾信息对 DRA信息维护的影响, 且有效避免了 DRA存储空间溢出的现象, 提高了 DRA信息的可维护性、 提高了 DRA存储空间的有效 利用率。 附图简要说明
图 1是本发明实施例一的 PCRF信息维护方法流程图;
图 2是本发明实施例二的 PCRF信息维护方法流程图;
图 3是本发明实施例三的 PCRF信息维护方法流程图;
图 4是本发明实施例四的 PCRF信息维护方法流程图;
图 5是本发明实施例五的 PCRF信息维护方法流程图;
图 6是本发明实施例六的 PCRF信息维护方法流程图;
图 7是本发明实施例七的 PCRF信息维护方法流程图;
图 8是本发明实施例八的 PCRF信息维护方法流程图;
图 9是本发明实施例的 Diameter路由代理示意图;
图 10是本发明实施例的另一种 PCRF信息维护方法流程图。 实施本发明的方式
在演进的网络中, 网络设备与 PCRF之间的会话终止后, DRA中存储的与该会 话对应的 PCR 信息的作用是非常有限的, 在某种程度上来说, 与会话对应的 PC
替换页(细则第 26条) RF信息在会话终止后可以称为垃圾信息。 如果在网络设备与 PCRF之间的会话终 止过程中, 能够及吋删除 DRA中存储的该会话对应的 PCRF信息, 则能够最大程 度的减少 DRA中的信息存储量, 从而有利于 DRA的信息维护、 有利于 DRA存储 空间的有效利用。
[29] 本发明实施方式中的网络设备为需要与 PCRF终止会话的网络设备, 该网络设 备可以为 GW, 也可以为 AF, 当然, 也可以为其它网络设备, GW可以为 Serving GW (服务网关) 、 PDN GW (分组数据网网关) 、 非 3GPP网络的 access Gateway (接入网关, aGW) 等。 在非 3GPP网络为 WIMAX吋, aGW可以是 Acce ss Service Network Gateway (接入业务网关, ASN
GW) ; 在非 3GPP网络为 CDMA2000 HRPD吋, aGW可以是 Packet Data Serving Node (分组数据服务节点, PDSN) ; 在非 3GPP网络为 IWLAN吋, aGW可以是 e volved Packet Data
Gateway (演进分组数据网关, ePDG) 。 这里的网络设备与 PCRF之间的会话终 止可以是由各种情况引起的会话终止, 如由于 detach (终端退网) 引起的会话终 止, 再如由于 handover (切换) 引起的会话终止等等。 而且, 这里的会话终止可 以是 3GPP接入的系统中的会话终止, 也可以是非 3GPP接入的系统中的会话终止 。 本发明实施方式不限制 GW、 网络设备的具体表现形式、 也不限制引起会话终 止的具体原因。
[30] 当本发明实施方式提供的技术方案应用在 3GPP detach场景下、 或非 3GPP
detach场景下吋, 下述针对流程图描述中的 GW为 PDN
GW。 当本发明实施方式提供的技术方案应用在从 3GPP切换到其它网络场景下 吋, 下述针对流程图描述中的 GW为 Serving
GW。 当本发明实施方式提供的技术方案应用在从非 3GPP切换到其它网络场景 下吋, 下述针对流程图描述中的 GW为非 3GPP aGW或者 Serving GW。
[31] 本发明实施方式中的 PCRF信息可以为终端与 PCRF的对应关系信息。 本发明实 施方式不限制 DRA中存储的 PCRF信息具体包括的内容。
[32] PCRF信息维护方法的一个具体的实施方式为: Diameter路由代理 DRA接收消 息, 所述消息为在网络设备与策略和计费规则功能实体 PCRF之间的会话终止过 程中或者会话终止后发送的消息; 所述 DRA删除其存储的与所述消息中携带的 信息对应的 PCRF信息。
[33] 上述 Diameter路由代理为需要进行 PCRF信息维护的 DRA。 DRA接收到的上述 消息可以由多种网络实体发送, 如需要终止会话的网络设备, 再如家乡网络中 的网元等。 上述 DRA在接收到消息后, 在其存储的信息中査找与该消息中携带 的信息对应的 PCRF信息, 并删除査找到的 PCRF信息。
[34] 上述实施方式中需要进行 PCRF信息维护的 DRA可以是非漫游场景下的 DRA, 也可以是漫游场景下的 DRA。 漫游场景下的 DRA可以是家乡网络 DRA, 也可以 是家乡网络 DRA和拜访网络 DRA。 在演进的网络中, 由于参与 PCRF选择即负有 选择 PCRF职责的 DRA中均会存储有 PCRF信息, 因此, 本发明实施方式中需要 进行 PCRF信息维护的 DRA为参与 PCRF选择的 DRA。
[35] 在非漫游场景下, 网络设备可以在其与 PCRF之间的会话终止过程中向 DRA发 送消息, 以便于促使 DRA删除其存储的与该会话对应的 PCRF信息。 在漫游场景 下, 拜访网络中的节点设备可以在获知网络设备与 hPCRF的会话需要终止后向 h DRA发送消息, 以便于促使 hDRA删除其存储的与该会话对应的 PCRF信息。 这 里的消息可以为专用于通知 DRA删除 PCRF信息的信息删除请求消息, 也可以为 会话终止请求消息, 当然, 也可以为其它消息。 本发明实施方式不限制消息的 具体名称。
[36] 在实际应用中, 由于负有选择 PCRF职责的 DRA可以充当 Redirect服务器的角色 , 也可以充当信息査询服务器的角色, 还可以充当 Proxy代理的角色, 而且, 在 DRA充当同一个角色吋, 会话终止流程随着会话建立流程的不同而不同, 因此 , 本发明实施方式提供的 PCRF信息维护的技术方案存在多种不同的实现流程。 下面结合附图、 以几种典型的会话终止流程为例对本发明实施方式提供的 PCRF 信息管理方法进行说明。
[37] 在 DRA作为 Redirect服务器或者信息査询服务器、 且终端处于非漫游的应用场 景下, PCRF信息维护流程如附图 1所示。
[38] 图 1中, 步骤 1、 GW/AF (GW或者 AF) 确定需要终止其与对应的 PCRF之间的 会话, GW/AF向 PCRF发送会话终止请求, 以请求终止 GW/AF到 PCRF之间的会 话。
[39] 步骤 2、 PCRF在接收到会话终止请求后向 GW/AF返回会话终止回应消息。
[40] 步骤 3、 GW/AF向 DRA发送信息删除请求消息, 以请求 DRA删除其存储的与该 会话对应的 PCRF信息。 信息删除请求消息中携带有能够唯一标识出需要删除的
PCRF信息的参数, 该参数可以为 UE ID (用户设备标识) 、 UE IP
Address (用户设备 IP地址) 、 Access Point Name
(业务接入点名称, APN) ; 该参数也可以为 UE IP Address、 PDN
ID (分组数据网标识) 等。
[41] 步骤 4、 DRA根据接收到的信息删除请求消息中的参数删除该参数对应的 PCRF
Ι π Λ∑!、。
[42] 步骤 5、 DRA在删除 PCRF信息后, 向 GW/AF返回信息删除回应消息。 从而会 话成功终止。
[43] 需要说明的是, 在上述针对图 1的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 1和步骤 3可以同吋执行, 再例如步骤 2和步骤 4可以没有先后 顺序。 另外, 图 1中的步骤 4是可以省略的。
[44] 在 DRA作为 Redirect服务器或者信息査询服务器、 且终端处于漫游的应用场景 下, PCRF信息维护的一个实施例流程如附图 2所示。 在图 2所示的实施例中, G W/AF可以位于拜访网络中, 如果 GW/AF位于家乡网络, 则可以釆用上述图 1中 的流程来实现 PCRF信息管理。 在图 2所示的实施例中, vDRA (拜访网络 DRA) 、 hDRA (家乡网络 DRA) 均参与 PCRF选择, 即 vDRA、 hDRA均负有 PCRF选择 职责; vPCRF (拜访网络 PCRF) 与 hDRA之间存在互通接口, 以进行 vPCRF与 h DRA之间的消息传输。
[45] 图 2中, 在步骤 1、 GW/AF向 vPCRF发送会话终止请求, 以请求终止 GW/AF与 h PCRF之间的会话。
[46] 步骤 2、 vPCRF向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[47] 步骤 3、 hPCRF接收到会话终止请求后, 向 vPCRF返回会话终止回应消息。
[48] 步骤 4、 vPCRF接收到会话终止回应消息后, 向 hDRA发送信息删除请求消息, 以请求删除 hDRA中存储的该会话对应的 hPCRF信息。 该信息删除请求消息中携 带有能够唯一标识出需要删除的 PCRF信息的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[49] 步骤 5、 hDRA根据接收到的信息删除请求消息中的参数删除该参数对应的 PCR
F信息。
[50] 步骤 6、 hDRA在删除 PCRF信息后, 向 vPCRF返回信息删除回应消息。
[51] 步骤 7、 vPCRF接收到信息删除回应消息后, 向 GW/AF返回会话终止回应消息
[52] 步骤 8、 GW/AF接收到会话终止回应消息后, 向 vDRA发送信息删除请求消息 , 以请求删除 vDRA中存储的该会话对应的 vPCRF信息。 该信息删除请求消息中 携带有能够唯一标识出需要删除的 PCRF信息的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[53] 步骤 9、 vDRA根据接收到的信息删除请求消息中的参数删除该参数对应的 PCR F信息。
[54] 步骤 10、 vDRA在删除 PCRF信息后, 向 GW/AF返回信息删除回应消息。 从而 会话成功终止。
[55] 需要说明的是, 在上述针对图 2的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 2和步骤 4可以同吋执行, 再例如步骤 7和步骤 8可以没有先后 顺序。 另外, 图 2中的步骤 6、 步骤 10是可以省略的。
[56] 在 DRA作为 Redirect服务器或者信息査询服务器、 且终端处于漫游的应用场景 下, PCRF信息维护的另一个实施例流程如附图 3所示。 在图 3所示的实施例中, GW/AF可以位于拜访网络中, 如果 GW/AF位于家乡网络, 则可以釆用上述图 1中 的流程来实现 PCRF信息管理。 在图 3所示的实施例中, vDRA、 hDRA均参与 PC RF选择, 即 vDRA、 hDRA均负有 PCRF选择职责; vDRA与 hDRA之间存在互通 接口, 以进行 vDRA与 hDRA之间的消息传输。
[57] 图 3中, 步骤 1、 GW/AF向 vPCRF发送会话终止请求, 以请求终止 GW/AF与 hPC RF之间的会话。
[58] 步骤 2、 vPCRF向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[59] 步骤 3、 hPCRF接收到会话终止请求后, 向 vPCRF返回会话终止回应消息。 [60] 步骤 4、 vPCRF接收到会话终止回应消息后, 向 GW/AF返回会话终止回应消息
[61] 步骤 5、 GW/AF向 vDRA发送信息删除请求消息, 以请求删除 vDRA中存储的该 会话对应的 vPCRF信息。 该信息删除请求消息中携带有能够唯一标识出需要删除 的 PCRF信息的参数, 该参数可以为 UE ID、 UE IP
Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[62] 步骤 6、 vDRA向 hDRA发送信息删除请求消息, 以请求删除 hDRA中存储的该 会话对应的 hPCRF信息。 该信息删除请求消息中携带有能够唯一标识出需要删除 的 PCRF信息的参数, 该参数可以为 UE ID、 UE IP
Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[63] 步骤 7、 hDRA根据接收到的信息删除请求消息中的参数删除该参数对应的 PCR F信息。
[64] 步骤 8、 hDRA在删除 PCRF信息后, 向 vDRA返回信息删除回应消息。
[65] 步骤 9、 vDRA在接收到信息删除回应消息后, 根据接收到的删除请求消息中的 参数删除该参数对应的 PCRF信息。
[66] 步骤 10、 vDRA在删除 PCRF信息后, 向 GW/AF返回信息删除回应消息。 从而 会话成功终止。
[67] 需要说明的是, 在上述针对图 3的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 1和步骤 5可以同吋执行, 再例如步骤 6和步骤 9也可以同吋执 行。 另外, 图 3中的步骤 8、 步骤 10是可以省略的。
[68] 在 DRA作为 Redirect服务器或者信息査询服务器、 且终端处于漫游的应用场景 下, PCRF信息维护的另一个实施例流程如附图 4所示。 在图 4所示的实施例中, GW/AF可以位于拜访网络中, 如果 GW/AF位于家乡网络, 则可以釆用上述图 1中 的流程来实现 PCRF信息管理。 在图 4所示的实施例中, vDRA不参与 PCRF选择 、 hDRA参与 PCRF选择, 即 vDRA不负有 PCRF选择职责、 hDRA负有 PCRF选择 职责; vPCRF与 hDRA之间存在互通接口, 以进行 vPCRF与 hDRA之间的消息传 输。
[69] 图 4中, 步骤 1、 GW/AF向 vPCRF发送会话终止请求, 以请求终止 GW/AF与 hPC RF之间的会话。
[70] 步骤 2、 vPCRF向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[71] 步骤 3、 hPCRF接收到会话终止请求后, 向 vPCRF返回会话终止回应消息。
[72] 步骤 4、 vPCRF接收到会话终止回应消息后, 向 hDRA发送信息删除请求消息, 以请求删除 hDRA中存储的该会话对应的 hPCRF信息。 该信息删除请求消息中携 带有能够唯一标识出需要删除的 PCRF信息的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[73] 步骤 5、 hDRA根据接收到的信息删除请求消息中的参数删除该参数对应的 PCR F信息。
[74] 步骤 6、 hDRA在删除 PCRF信息后, 向 vPCRF返回信息删除回应消息。
[75] 步骤 7、 vPCRF在接收到信息删除回应消息后, 向 GW/AF返回会话终止回应消 息。 从而会话成功终止。
[76] 需要说明的是, 在上述针对图 4的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 2和步骤 4可以同吋执行, 再例如步骤 6和步骤 7可以没有先后 顺序等。 另外, 图 4中的步骤 6是可以省略的。
[77] 在 DRA作为 Proxy代理、 且终端处于非漫游的应用场景下, PCRF信息维护的一 个实施例流程如附图 5所示。
[78] 图 5中, 步骤 1、 GW/AF (GW或者 AF) 确定需要终止其与对应的 PCRF之的会 话, GW/AF向 DRA发送会话终止请求, 以请求终止 GW/AF到 PCRF之间的会话
[79] 步骤 2、 DRA在接收到会话终止请求后向 PCRF转发该会话终止请求。
[80] 步骤 3、 PCRF在接收到会话终止请求后, 向 DRA返回会话终止回应消息。
[81] 步骤 4、 DRA在接收到会话终止回应消息后, 根据接收到的会话终止请求消息 或者会话终止回应消息中的参数删除该参数对应的 PCRF信息。 这里的会话终止 请求消息或者会话终止回应消息中携带有能够唯一标识出需要删除的 PCRF信息 的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[82] 步骤 5、 DRA在删除 PCRF信息后, 向 GW/AF返回会话终止回应消息。 从而会 话成功终止。
[83] 需要说明的是, 在上述针对图 5的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 2和步骤 4可以同吋执行, 再例如步骤 3和步骤 4可以没有先后 顺序。
[84] 在 DRA作为 Proxy代理、 且终端处于漫游的应用场景下, PCRF信息维护的一个 实施例流程如附图 6所示。 在图 6所示的实施例中, GW/AF可以位于拜访网络中 , 如果 GW/AF位于家乡网络, 则可以釆用上述图 5中的流程来实现 PCRF信息管 理。 在图 6所示的实施例中, vDRA、 hDRA均参与 PCRF选择, 即 vDRA、 hDRA 均负有 PCRF选择职责; vPCRF与 hDRA之间存在互通接口, 以进行 vPCRF与 hDR A之间的消息传输。
[85] 图 6中, 在步骤 1、 GW/AF向 vDRA发送会话终止请求, 以请求终止 GW/AF与 hP CRF之间的会话。
[86] 步骤 2、 vDRA向 vPCRF转发接收到的会话终止请求, 以要求终止会话。
[87] 步骤 3、 vPCRF向 hDRA转发接收到的会话终止请求, 以要求终止会话。
[88] 步骤 4、 hDRA向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[89] 步骤 5、 hPCRF接收到会话终止请求后, 向 hDRA返回会话终止回应消息。
[90] 步骤 6、 hDRA在接收到会话终止回应消息后, 根据接收到的会话终止请求消息 或者会话终止回应消息中的参数删除该参数对应的 PCRF信息。 这里的会话终止 请求消息或者会话终止回应消息中携带有能够唯一标识出需要删除的 PCRF信息 的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP
Address、 PDN ID等。
[91] 步骤 7、 hDRA在删除 PCRF信息后, 向 vPCRF返回会话终止回应消息。
[92] 步骤 8、 vPCRF向 vDRA转发接收到的会话终止回应消息。
[93] 步骤 9、 vDRA在接收到会话终止回应消息后, 根据接收到的会话终止请求消息 或者会话终止回应消息中的参数删除该参数对应的 PCRF信息。 这里的会话终止 请求消息或者会话终止回应消息中携带有能够唯一标识出需要删除的 PCRF信息 的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。 [94] 步骤 10、 vDRA在删除 PCRF信息后, 向 GW/AF返回会话终止回应消息。 从而 会话成功终止。
[95] 需要说明的是, 在上述针对图 6的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 4和步骤 6可以同吋执行, 再例如步骤 2和步骤 9也可以同吋执 行。
[96] 在 DRA作为 Proxy代理、 且终端处于漫游的应用场景下, PCRF信息维护的另一 个实施例流程如附图 7所示。 在图 7所示的实施例中, GW/AF可以位于拜访网络 中, 如果 GW/AF位于家乡网络, 则可以釆用上述图 5中的流程来实现 PCRF信息 管理。 在图 7所示的实施例中, vDRA不参与 PCRF选择、 hDRA参与 PCRF选择, 即 vDRA不负有 PCRF选择职责、 hDRA负有 PCRF选择职责; vDRA与 hDRA之间 存在互通接口, 以进行 vDRA与 hDRA之间的消息传输。
[97] 图 7中, 在步骤 1、 GW/AF向 vDRA发送会话终止请求, 以请求终止 GW/AF与 hP CRF之间的会话。
[98] 步骤 2、 vDRA向 hDRA转发接收到的会话终止请求, 以要求终止会话。
[99] 步骤 3、 hDRA向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[100] 步骤 4、 hPCRF接收到会话终止请求后, 向 hDRA返回会话终止回应消息。
[101] 步骤 5、 hDRA在接收到会话终止回应消息后, 根据接收到的会话终止请求消息 或者会话终止回应消息中的参数删除该参数对应的 PCRF信息。 这里的会话终止 请求消息或者会话终止回应消息中携带有能够唯一标识出需要删除的 PCRF信息 的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[102] 步骤 6、 hDRA在删除 PCRF信息后, 向 vDRA返回会话终止回应消息。
[103] 步骤 7、 vDRA向 GW/AF转发接收到的会话终止回应消息。 从而会话成功终止
[104] 需要说明的是, 在上述针对图 7的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 3和步骤 5可以同吋执行, 再例如步骤 5和步骤 6也可以同吋执 行。
[105] 在 DRA作为 Proxy代理、 且终端处于漫游的应用场景下, PCRF信息维护的另一 个实施例流程如附图 8所示。 在图 8所示的实施例中, GW/AF可以位于拜访网络 中, 如果 GW/AF位于家乡网络, 则可以釆用上述图 5中的流程来实现 PCRF信息 管理。 在图 8所示的实施例中, vDRA不参与 PCRF选择、 hDRA参与 PCRF选择, 即 vDRA不负有 PCRF选择职责、 hDRA负有 PCRF选择职责; vPCRF与 hDRA之间 存在互通接口, 以进行 vPCRF与 hDRA之间的消息传输。
[106] 图 8中, 在步骤 1、 GW/AF向 vPCRF发送会话终止请求, 以请求终止 GW/AF与 h PCRF之间的会话。
[107] 步骤 2、 vPCRF向 hDRA转发接收到的会话终止请求, 以要求终止会话。
[108] 步骤 3、 hDRA向 hPCRF转发接收到的会话终止请求, 以要求终止会话。
[109] 步骤 4、 hPCRF接收到会话终止请求后, 向 hDRA返回会话终止回应消息。
[110] 步骤 5、 hDRA在接收到会话终止回应消息后, 根据接收到的会话终止请求消息 或者会话终止回应消息中的参数删除该参数对应的 PCRF信息。 这里的会话终止 请求消息或者会话终止回应消息中携带有能够唯一标识出需要删除的 PCRF信息 的参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 PDN ID等。
[111] 步骤 6、 hDRA在删除 PCRF信息后, 向 vPCRF返回会话终止回应消息。
[112] 步骤 7、 vPCRF向 GW/AF转发接收到的会话终止回应消息。 从而会话成功终止
[113] 需要说明的是, 在上述针对图 8的流程描述中, 步骤编号并不都代表操作的执 行顺序, 例如步骤 3和步骤 5可以同吋执行, 再例如步骤 5和步骤 6也可以同吋执 行。
[114] 下面结合附图对本发明实施方式提供的 DRA进行说明。
[115] 本发明实施方式提供的 DRA如附图 9所示, 图 9中的 DRA包括: 第一模块、 第二 模块和第三模块, 该 DRA还可以可选的包括: 第四模块和第五模块。
[116] 第一模块中存储有 PCRF信息, PCRF信息可以为终端与 PCRF的对应关系信息 。 第一模块中存储的 PCRF信息可以通过静态配置方式设置, 也可以通过动态配 置方式设置。 动态配置方式如 DRA根据预定策略分配 PCRF, 在分配完成后, 将 分配的 PCRF信息存储在第一模块中。 [117] 第二模块用于接收 DRA外部传输来的消息。 例如, 第二模块接收非漫游场景下 网络设备传输来的消息; 再例如, 第二模块接收漫游场景下拜访网络传输来的 消息。 拜访网络传输来的消息如拜访网络 DRA在会话终止过程中传输来的消息 、 拜访网络 PCRF在会话终止过程中传输来的消息等等。 当第二模块接收到的消 息为拜访网络传输来的消息吋, 第二模块所在的 DRA位于家乡网络。 这里的网 络设备为与 PCRF建立有会话的网络设备。 网络设备可以在终止会话过程中向 DR A发送消息。 第二模块接收到的消息可以为会话终止请求消息, 也可以为信息删 除请求消息。
[118] 当第二模块接收到的消息是由网络设备传输来的信息删除请求, 则可以适用上 述图 1 (步骤 1至步骤 3) 、 图 2 (包括步骤 8) 中描述的相应内容, 在此不再重复 说明。
[119] 当第二模块接收到的消息是由网络设备传输来的会话终止请求, 则可以适用上 述图 5 (包括步骤 1至步骤 3) 中描述的相应内容, 在此不再重复说明。
[120] 当第二模块接收到的消息是由拜访网络 DRA传输来的信息删除请求, 则可以适 用上述图 3 (包括步骤 6) 中描述的相应内容, 在此不再重复说明。
[121] 当第二模块接收到的消息是由拜访网络 DRA传输来的会话终止请求, 则可以适 用上述图 7 (步骤 1至步骤 2) 中描述的相应内容, 在此不再重复说明。
[122] 当第二模块接收到的消息是由拜访网络 PCRF传输来的信息删除请求, 则可以 适用上述图 2 (包括步骤 1至步骤 4) 、 图 4 (包括步骤 1至步骤 4) 中描述的相应 内容, 在此不再重复说明。
[123] 当第二模块接收到的消息是由拜访网络 PCRF传输来的会话终止请求, 则可以 适用上述图 6 (包括步骤 1至步骤 3) 、 图 8 (包括步骤 1至步骤 2) 中描述的相应 内容, 在此不再重复说明。
[124] 第三模块在第二模块接收到消息后, 根据第二模块接收的消息中携带的信息确 定需要删除 PCRF信息后, 删除第一模块中存储的与第二模块接收到的消息中携 带的信息对应的 PCRF信息。
[125] 第四模块用于在第三模块删除 PCRF信息后, 向其所在的 DRA外部返回回应消 息, 例如, 当第二模块接收到的消息是由网络设备传输来的, 则第四模块向网 络设备返回回应消息; 再例如, 当第二模块接收到的消息是由拜访网络传输来 的, 则第四模块向拜访网络 (拜访网络 DRA、 拜访网络 PCRF等) 返回回应消息 。 这里的回应消息是与第二模块接收到的消息对应的回应消息, 如第二模块接 收到信息删除请求消息, 则第四模块返回信息删除回应消息; 再如第二模块接 收到会话终止请求消息, 则第四模块返回会话终止回应消息。 具体如上述方法 实施方式中的描述, 在此不再重复说明。
[126] 在第五模块所在的 DRA位于拜访网络、 且该 DRA参与 PCRF选择的情况下, 第 五模块在接收到其所在的 DRA之外传输来的回应消息后, 删除第一模块中存储 的与需要终止的会话对应的 PCRF信息。 例如, 如图 3所示, vDRA中的第五模块 在接收到 hDRA传输来的信息删除回应消息后, 删除第一模块中存储的 vPCRF信 息; 再例如, 如图 6所示, vDRA中的第五模块在接收到 hDRA通过 vPCRF传输来 的会话终止回应消息后, 删除第一模块中存储的 vPCRF信息。 具体如上述方法实 施方式中的描述, 在此不再重复说明。
[127] 在第五模块删除 PCRF信息后, 第四模块向网络设备返回相应的回应消息, 如 向网络设备返回会话终止回应消息, 再如向网络设备返回信息删除回应消息。 具体如上述方法实施方式中的描述, 在此不再重复说明。
[128] 下面结合附图 10对本发明实施方式提供的另外一种 PCRF信息维护方法进行说 明。
[129] 图 10中, 步骤 1、 PCRF判断其绑定的为预定用户服务的所有会话的终止情况。
这里的终止情况可以为是否需要终止, 是否已经终止等等。 这里的为预定用户 服务的所有会话可以包括下述会话中的一种或多种: IP-Connectivity Access Netowork Session (接入网 IP连通性会话, IP-CAN会话) 、 GW
Control会话、 AF会话。 也就是说, 在不同的应用场景下, 为预定用户服务的会 话可能存在一种会话、 也可能同吋存在两种会话、 还可能同吋存在三种会话, 在为预定用户服务的会话包括多种会话吋, PCRF必须判断是否最后一个会话也 需要终止、 或者已经终止。 此处的预定用户可以通过 UE ID、 UE IP
Address唯一确定, 也可以通过 UE ID、 UE IP Address和 APN唯一确定。
[130] 步骤 2、 在确定所述所有会话已经终止或需要终止后, PCRF向 DRA发送信息删 除请求消息, 以通知 DRA删除保存的所述会话对应的 PCRF信息。 该信息删除请 求消息中携带有能够唯一标识出需要删除的 PCRF信息的参数, 该参数可以为 UE IDs UE IP Address s APN; 该参数也可以为 UE IP Address、 UE ID等。
[131] 步骤 3、 DRA根据收到的信息删除请求消息中携带的信息, 删除其存储的对应 P CRF信息。
[132] 步骤 4、 DRA删除 PCRF信息后, 向 PCRF返回信息删除回应消息。
[133] 上述图 10中的 PCRF、 DRA可以为在非漫游场景下的 PCRF和 DRA。
[134] 在漫游场景下, 上述图 10中的 PCRF可以为 vPCRF, DRA可以为 vDRA。
[135] 在漫游场景下, 上述图 10中的 PCRF可以为 hPCRF, DRA可以为 hDRA。
[136] 在上述图 10中, 如果 PCRF是在判断出需要终止会话后向 DRA发送的信息删除 请求信息, 则 PCRF可以在发送信息删除请求消息后, 终止为预定用户服务的所 有会话; PCRF也可以在发送信息删除请求消息的同吋终止为预定用户服务的所 有会话, PCRF还可以在接收到 DRA返回的信息删除回应消息后终止为预定用户 服务的所有会话。
[137] 本发明实施方式不限制 DRA中存储的 PCRF信息的具体内容、 也不限制 PCRF通 知 DRA釆用的具体的消息、 以及信息删除请求消息中具体承载的信息。 而且, 不论 DRA是充当 Redirect服务器的角色、 信息査询服务器的角色, 还是充当 Proxy 代理的角色, 该实施方式都可以适用。
[138] 下面对本发明实施方式提供的 PCRF进行说明。
[139] 本发明实施方式中的 PCRF包括: 判断模块、 通知模块。 该 PCRF还可以可选的 包括接收模块。
[140] 判断模块判断其绑定的为预定用户服务的所有会话的终止情况。 这里的预定用 户即某个用户。 这里的终止情况可以为是否需要终止, 是否已经终止等等。 这 里的为预定用户服务的所有会话可以包括下述会话中的一种或多种: IP-CAN会 话、 GW
Control会话、 AF会话。 也就是说, 在不同的应用场景下, 为预定用户服务的会 话可能存在一种会话、 也可能同吋存在两种会话、 还可能同吋存在三种会话, 在为预定用户服务的会话包括多种会话吋, 判断模块必须判断是否最后一个会 话也需要终止、 或者已经终止。 此处的预定用户可以通过 UE ID、 UE IP
Address唯一确定, 也可以通过 UE ID、 UE IP Address和 APN唯一确定。
[141] 通知模块在判断模块确定出所述所有会话已经终止或需要终止后, 通知 Diamet er路由代理删除所述会话对应的 PCRF信息。 通知模块发送的通知可以为删除请 求消息, 该信息删除请求消息中携带有能够唯一标识出需要删除的 PCRF信息的 参数, 该参数可以为 UE ID、 UE IP Address APN; 该参数也可以为 UE IP Address、 UE ID等。
[142] DRA根据收到的信息删除请求消息中携带的信息删除其存储的对应 PCRF信息 , 并在删除 PCRF信息后, 向 PCRF返回信息删除回应消息, 即 DRA根据信息删 除请求消息中携带有能够唯一标识出需要删除的 PCRF信息的参数删除与该参数 对应的 PCRF信息。
[143] 接收模块接收 DRA返回的信息删除回应消息。
[144] 虽然通过实施例描绘了本发明, 本领域普通技术人员知道, 本发明有许多变形 和变化而不脱离本发明的精神, 本发明的申请文件的权利要求包括这些变形和 变化。

Claims

权利要求书
[1] 一种策略和计费规则功能实体信息维护方法, 其特征在于, 包括:
Diameter路由代理 DRA接收消息, 所述消息为在网络设备与策略和计费规 则功能实体 PCRF之间的会话终止过程中或者会话终止后发送的消息; 所述 DRA删除其存储的与所述消息中携带的信息对应的 PCRF信息。
[2] 如权利要求 1所述的方法, 其特征在于, 所述 DRA为充当 Redirect重定向服 务器角色的 DRA, 或者为充当 Proxy代理角色的 DRA。
[3] 如权利要求 1所述的方法, 其特征在于, 所述会话终止为: 终端退网引起的 会话终止, 或者, 切换引起的会话终止。
[4] 如权利要求 1所述的方法, 其特征在于, 所述网络设备与 PCRF之间的会话 为以下一种或任意组合: 接入网 IP连通性会话、 应用服务器会话和网关控 制会话。
[5] 如权利要求 1所述的方法, 其特征在于, 所述方法具体包括:
在非漫游场景下, Diameter路由代理接收网络设备传输来的消息, 该消息 为网络设备在与策略和计费规则功能实体 PCRF终止会话过程中发送的消息
Diameter路由代理删除其存储的与所述消息中携带的信息对应的 PCRF信息
[6] 如权利要求 5所述的方法, 其特征在于, 所述网络设备传输来的消息包括: 网络设备在接收到 PCRF回应的会话终止回应消息后, 主动向 Diameter路由 代理发送的用于请求删除 PCRF信息的信息删除请求消息; 或 用于请求终止网络设备与 PCRF之间会话的会话终止请求消息。
[7] 如权利要求 1所述的方法, 其特征在于, 所述方法具体包括:
在漫游场景下, 家乡网络 Diameter路由代理接收拜访网络传输来的消息, 所述消息为: 在网络设备与 PCRF之间的会话终止过程中或者会话终止后拜 访网络中的网元发送的消息;
家乡网络 Diameter路由代理删除其存储的与所述消息中携带的信息对应的 家乡网络 PCRF信息。
[8] 如权利要求 7所述的方法, 其特征在于, 所述拜访网络传输来的消息包括: 用于请求删除 PCRF信息的信息删除请求消息、 或用于请求终止网络设备与 PCRF之间会话的会话终止请求消息。
[9] 如权利要求 8所述的方法, 其特征在于, 所述家乡网络 Diameter路由代理接 收拜访网络传输来的消息的步骤包括:
拜访网络 PCRF根据网络设备传输来的消息确定需要终止会话后, 向家乡网 络 PCRF转发所述消息, 并向所述家乡网络 Diameter路由代理发送用于请求 删除 PCRF信息的信息删除请求消息。
[10] 如权利要求 9所述的方法, 其特征在于, 所述方法在家乡网络 Diameter路由 代理删除其存储的与所述消息中携带的信息对应的家乡网络 PCRF信息的步 骤之后还包括:
家乡网络 Diameter路由代理向拜访网络 PCRF返回信息删除回应消息; 拜访网络 PCRF通知所述网络设备会话终止;
所述网络设备向拜访网络 Diameter路由代理发送信息删除请求消息, 所述 拜访网络 Diameter路由代理删除其存储的与所述信息删除请求消息携带的 信息对应的拜访网络 PCRF信息;
或者所述方法在家乡网络 Diameter路由代理删除其存储的与所述消息中携 带的信息对应的家乡网络 PCRF信息的步骤之后还包括:
家乡网络 Diameter路由代理向拜访网络 PCRF返回信息删除回应消息; 拜访网络 PCRF通知所述网络设备会话终止。
[11] 如权利要求 7所述的方法, 其特征在于, 所述家乡网络 Diameter路由代理接 收拜访网络传输来的消息的步骤包括:
网络设备在需要终止会话吋, 通过拜访网络 PCRF向家乡网络 PCRF发送消 息, 家乡网络 PCRF通过拜访网络 PCRF向网络设备发送回应消息; 网络设备向拜访网络 Diameter路由代理发送用于请求删除 PCRF信息的信息 删除请求消息, 拜访网络 Diameter路由代理向所述家乡网络 Diameter路由代 理发送所述信息删除请求消息。
[12] 如权利要求 11所述的方法, 其特征在于, 所述方法在家乡网络 Diameter路 由代理删除其存储的与所述消息中携带的信息对应的家乡网络 PCRF信息的 步骤之后还包括:
家乡网络 Diameter路由代理向拜访网络 Diameter路由代理返回信息删除回应 消息;
所述拜访网络 Diameter路由代理删除其存储的与所述会话对应的拜访网络 P CRF信息。
[13] 如权利要求 12所述的方法, 其特征在于, 所述方法在拜访网络 Diameter路 由代理删除拜访网络 PCRF信息的步骤之后还包括:
拜访网络 Diameter路由代理向所述网络设备返回回应消息。
[14] 如权利要求 8所述的方法, 其特征在于, 所述家乡网络 Diameter路由代理接 收拜访网络传输来的消息的步骤包括:
家乡网络 Diameter路由代理接收拜访网络 PCRF传输来的会话终止请求消息 ; 或者家乡网络 Diameter路由代理接收拜访网络 Diameter路由代理传输来的 会话终止请求消息。
[15] 如权利要求 14所述的方法, 其特征在于, 所述方法在家乡网络 Diameter路 由代理删除其存储的与所述消息中携带的信息对应的家乡网络 PCRF信息的 步骤之后还包括:
家乡网络 Diameter路由代理向拜访网络 PCRF返回会话终止回应消息, 拜访 网络 PCRF向拜访网络 Diameter路由代理返回会话终止回应消息, 所述拜访 网络 Diameter路由代理删除其存储的与所述会话对应的拜访网络 PCRF信息
, 并向网络设备返回会话终止回应消息;
或者
家乡网络 Diameter路由代理通过拜访网络 Diameter路由代理或拜访网络 PCR F向网络设备返回会话终止回应消息。
[16] 一种 Diameter路由代理, 其特征在于, 包括:
第一模块, 用于存储 PCRF信息;
第二模块, 用于接收外部传输来的消息; 所述消息包括: 在网络设备与策 略和计费规则功能实体 PCRF之间的会话终止过程中或者会话终止后传输来 的消息, 或者, 在漫游场景下、 在网络设备与 PCRF之间的会话终止过程中 或者会话终止后拜访网络中的网元传输来的消息;
第三模块, 用于删除第一模块中存储的与所述消息中携带的信息对应的 PC RF信息。
[17] 如权利要求 16所述的 Diameter路由代理, 其特征在于, 还包括:
第四模块, 用于在第三模块删除 PCRF信息后, 向外部返回回应消息。
[18] 如权利要求 17所述的 Diameter路由代理, 其特征在于, 还包括:
第五模块, 用于在其所在的 Diameter路由代理位于拜访网络、 且参与 PCRF 选择的情况下, 在接收到外部传输来的回应消息后, 删除第一模块中存储 的与所述会话对应的 PCRF信息。
PCT/CN2009/070048 2008-01-07 2009-01-06 Procédé et appareil de maintenance des informations de fonction de règle de politique et de facturation WO2009089776A1 (fr)

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