WO2014086020A1 - 会话恢复方法、设备及系统 - Google Patents

会话恢复方法、设备及系统 Download PDF

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Publication number
WO2014086020A1
WO2014086020A1 PCT/CN2012/086034 CN2012086034W WO2014086020A1 WO 2014086020 A1 WO2014086020 A1 WO 2014086020A1 CN 2012086034 W CN2012086034 W CN 2012086034W WO 2014086020 A1 WO2014086020 A1 WO 2014086020A1
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WO
WIPO (PCT)
Prior art keywords
message
pcef
pcrf
session
pcc
Prior art date
Application number
PCT/CN2012/086034
Other languages
English (en)
French (fr)
Inventor
何光伟
张静
卿华
王毓芳
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201811392511.7A priority Critical patent/CN109450655A/zh
Priority to JP2015545625A priority patent/JP6114835B2/ja
Priority to PCT/CN2012/086034 priority patent/WO2014086020A1/zh
Priority to EP12889678.4A priority patent/EP2922317A4/en
Priority to CN201280002811.4A priority patent/CN104041090B/zh
Publication of WO2014086020A1 publication Critical patent/WO2014086020A1/zh
Priority to US14/731,700 priority patent/US20150271275A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/14Session management
    • H04L67/142Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0893Assignment of logical groups to network elements
    • 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
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • H04L41/0813Configuration setting characterised by the conditions triggering a change of settings
    • H04L41/0816Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/28Routing or path finding of packets in data switching networks using route fault recovery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0894Policy-based network configuration management
    • 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 communications technologies, and in particular, to a session recovery method, device, and system. Background technique
  • a Packet Switching (PS) network can detect different service flows and perform Quality of Service (QoS) control and calculation for traffic flows. Fee statistics.
  • the PCC system includes a Policy and Charging Enforcement Function (PCEF) and a Policy and Charging Rule Function (PCRF).
  • PCEF Policy and Charging Enforcement Function
  • PCRF Policy and Charging Rule Function
  • Gx interface To improve the reliability of the Gx interface, you can use the active and standby DRF components in the actual deployment.
  • the primary PCRF is preferentially established to establish a session. If the primary PCRF is unavailable, the standby PCRF is selected.
  • the PCRF selected at the time of activation is preferentially used. If the selected PCRF is unavailable when activated, the trigger is triggered.
  • the Gx Failover process selects another PCRF.
  • the primary PCRF and the standby PCRF are usually located in different geographical locations.
  • real-time hot backup is used between the primary PCRF and the standby PCRF.
  • real-time signaling interaction is required between the two to ensure data between the network elements. consistency.
  • the embodiment of the present invention provides a session recovery method, device, and system, which are used to solve the problem that the signaling processing capability caused by real-time signaling interaction between the active and standby PCRFs in the prior art is poor.
  • a session recovery method including:
  • the standby PCRF receives a CCR-U message sent by the PCEF, and the CCR-U message is sent by the PCEF after determining that a session update is required;
  • the standby PCRF reconstructs a session according to the CCR-U message and makes a PCC policy decision.
  • the CCR-U message includes user information and an original PCC rule, where the original PCC rule is a primary PCRF in an IP-CAN
  • the session initial establishment process or the IP connection access network IP-CAN session update process is sent to the PCEF, and the PCC policy decision is performed, including:
  • the original PCC rule is determined as a PCC rule obtained after the PCC policy decision; or, according to the user information and the subscription information, a PCC rule is obtained.
  • the PCC rule obtained by the standby PCRF is a new PCC different from the original PCC rule.
  • the method further includes:
  • the standby PCRF sends a credit control response update CCA-U message to the PCEF, where the CCA-U message includes the new PCC rule, so that the PCEF performs charging and policy control according to the new PCC rule. .
  • the CCR-U message includes user information
  • the performing the PCC policy decision includes: obtaining a PCC according to the user information and the subscription information.
  • the session recovery indication information is obtained according to the configuration information, where the session recovery indication information is used to indicate that the PCEF maintains or modifies the original bearer and the policy;
  • the method further includes:
  • the standby PCRF sends a CCA-U message to the PCEF, where the CCA-U message includes the session recovery indication information.
  • the session recovery indication information when used to indicate that the PCEF modifies an original bearer and a policy, the CCA-U message further includes a PCC rule obtained by the standby PCRF, so that after receiving the CCA-U message, the PCEF deactivates all the dedicated bearers, and replaces the default with the PCC rule obtained by the standby PCEF.
  • the original PCC rules on the bearer when the session recovery indication information is used to indicate that the PCEF modifies an original bearer and a policy, the CCA-U message further includes a PCC rule obtained by the standby PCRF, so that after receiving the CCA-U message, the PCEF deactivates all the dedicated bearers, and replaces the default with the PCC rule obtained by the standby PCEF.
  • the original PCC rules on the bearer when the session recovery indication information is used to indicate that the PCEF modifies an original bearer and a policy, the CCA-U message further includes a PCC rule obtained by the standby PCRF, so that after receiving the CCA-U message, the PC
  • a session recovery method including:
  • PCEF determines that a session update is required
  • the PCEF sends a CCR-U message to the standby PCRF, so that the standby PCRF reconstructs the session according to the CCR-U message and makes a PCC policy decision.
  • the method further includes: the PCEF receiving the primary PCRF in an initial process of establishing an IP-CAN session in an IP connection access network Or the original PCC rules sent during the IP-CAN session update process;
  • the PCEF sends a CCR-U message to the standby PCRF, so that the standby PCRF reestablishes the session according to the CCR-U message and makes a PCC policy decision, including:
  • the PCEF sends a CCR-U message to the standby PCRF, where the CCR-U message includes the user information and the original PCC rule, so that the standby PCRF reestablishes the session according to the user information, and the original
  • the PCC rule is determined as a PCC rule after the PCC policy decision, or the PCC rule is obtained according to the user information and the subscription information.
  • the method when the standby PCRF obtains a PCC rule different from an original PCC rule of the PCEF, the method is Also includes:
  • the PCEF sends a CCR-U message to the standby PCRF, so that the standby PCRF reestablishes a session according to the CCR-U message and performs a PCC policy decision. , including:
  • the PCEF sends a CCR-U message to the standby PCRF, where the CCR-U message includes user information, so that the standby PCRF reestablishes a session according to the user information, and obtains a PCC rule according to the user information and the subscription information, according to
  • the configuration information is obtained by the session recovery indication information, where the session recovery indication information is used to indicate that the PCEF maintains or modifies the original bearer and the policy;
  • the method further includes:
  • the PCEF receives the CCA-U message sent by the standby PCRF, where the CCA-U message includes session recovery indication information.
  • the CCA-U message further includes the PCC rule obtained by the standby PCRF, and the method further includes:
  • the PCEF After receiving the CCA-U message, the PCEF deactivates all dedicated bearers, and replaces the original PCC rules on the default bearer with the PCC rules obtained by the standby PCEF.
  • a session recovery device including: a receiving module, configured to receive a CCR-U message sent by the PCEF;
  • the CCR-U message includes user information and an original PCC rule, where the original PCC rule is a primary PCRF access in an IP connection.
  • the network IP-CAN session initial establishment process or the IP-CAN session update process is sent to the PCEF, and the processing module is specifically configured to:
  • the original PCC rule is determined as a PCC rule obtained after the PCC policy decision; or, according to the user information and the subscription information, a PCC rule is obtained.
  • the PCC rule obtained by the standby PCRF is a new PCC different from the original PCC rule.
  • the device further includes:
  • a sending module configured to send a credit control response update CCA-U message to the PCEF, where the CCA-U message includes the new PCC rule, so that the PCEF performs charging and policy according to the new PCC rule. control.
  • the CCR-U message includes user information, where the processing module is specifically configured to: obtain a PCC rule according to the user information and the subscription information.
  • the session recovery indication information is used to indicate that the PCEF maintains or modifies the original bearer and the policy.
  • the device further includes:
  • a sending module configured to send a CCA-U message to the PCEF, where the CCA-U message includes the session recovery indication information.
  • the session recovery indication information is used to indicate that the PCEF modifies an original bearer and a policy
  • the sending module is specifically used to:
  • a session recovery device including:
  • a sending module configured to send a CCR-U message to the standby PCRF, so that the standby PCRF is configured according to the The CCR-U message rebuilds the session and makes PCC policy decisions.
  • the method further includes: a first receiving module, configured to receive a primary PCRF in an IP connection access network IP-CAN session initial establishment process or an IP-CAN session update The original PCC rules sent during the process;
  • the sending module is specifically configured to: send a CCR-U message to the standby PCRF, where the CCR-U message includes user information and the original PCC rule, so that the standby PCRF reestablishes a session according to the user information, and
  • the original PCC rule is determined as a PCC rule after the PCC policy decision, or the PCC rule is obtained according to the user information and the subscription information.
  • the device when the standby PCRF obtains a PCC rule different from an original PCC rule of the PCEF, the device also includes:
  • a third receiving module configured to receive a CCC-U message sent by the standby PCRF, where the CCA-U message includes a PCC rule obtained by the standby PCRF, and a PCC rule obtained according to the standby PCRF Perform billing and policy control.
  • the sending module is specifically configured to:
  • the session recovery indication information is used to indicate that the PCEF maintains or modifies the original bearer and the policy
  • the device further includes:
  • a fourth receiving module configured to receive a CCA-U message sent by the standby PCRF, where the CCA-U message includes session recovery indication information.
  • the CCA-U message further includes the PCC rule obtained by the standby PCRF, and the device further includes:
  • the processing module is configured to: after receiving the CCA-U message, deactivate all the dedicated bearers, and replace the original PCC rules on the default bearer with the PCC rules obtained by the standby PCEF.
  • a session recovery system including: PCEF, used to send a CCR-U message after determining that a session update is required;
  • a PCRF is configured to reconstruct a session according to the CCR-U message and perform a PCC policy decision.
  • the PCEF is specifically configured to: send a CCR-U message after determining that a session update is required, where the CCR-U message includes user information and an original
  • the original PCC rule is that the primary PCRF is sent to the PCEF during an IP-CAN session initial establishment process or an IP-CAN session update process;
  • the standby PCRF is specifically configured to: re-establish a session according to the user information, and determine the original PCC rule as a PCC rule obtained after the PCC policy decision; or obtain a PCC according to the user information and the subscription information. rule.
  • the preparing The PCRF is further configured to: send a credit control response update CCA-U message to the PCEF, where the CCA-U message includes the new PCC rule, so that the PCEF performs charging and policy according to the new PCC rule. control.
  • the PCEF is configured to: send a CCR-U message after determining that a session update is required, where the CCR-U message includes user information;
  • the standby PCRF is specifically configured to: re-establish a session according to the user message, and obtain a PCC rule according to the user information and the subscription information, and obtain session recovery indication information according to the configuration information, where the session recovery indication information is used to indicate the location
  • the PCEF maintains or modifies the original bearer and policy; and sends a CCA-U message to the PCEF, where the CCA-U message includes the session recovery indication information.
  • the session recovery indication information when used to indicate that the PCEF modifies an original bearer and a policy, the CCA-U message further includes a PCC rule obtained by the standby PCRF, where the PCEF is further configured to: after receiving the CCA-U message, deactivate all the dedicated bearers, and use the PCC rule obtained by using the standby PCRF. Replace the original PCC rules on the default bearer.
  • FIG. 1 is a schematic flowchart of an embodiment of a session recovery method according to the present invention.
  • FIG. 2 is a schematic flowchart of another embodiment of a session recovery method according to the present invention.
  • FIG. 3 is a schematic flowchart of another embodiment of a session recovery method according to the present invention.
  • FIG. 4 is a schematic flowchart of another embodiment of a session recovery method according to the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a session recovery device according to the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a session recovery device according to the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of a session recovery system according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic flowchart of a method for restoring a session according to an embodiment of the present invention.
  • the execution host in this embodiment is a standby PCRF.
  • This embodiment includes:
  • the standby PCRF receives a Credit Control Request Update (CCR-U) message sent by the PCEF, where the CCR-U message is sent after the PCEF determines that a session update is required;
  • CCR-U Credit Control Request Update
  • the standby PCRF reestablishes a session according to the CCR-U message, and performs a PCC policy decision.
  • PCEF determines that a session update is required
  • 202 The PCEF sends a CCR-U message to the standby PCRF, so that the standby PCRF reestablishes a session according to the CCR-U message and performs a PCC policy decision.
  • the condition that the PCEF determines that the session update is required may be: receiving an IP-CAN session update request sent by the access network, or an internal timer timeout.
  • the PCEF may include the user information and the original PCC rule in the CCR-U message sent to the standby PCRF.
  • the PCRF may re-establish the session according to the user information, and The PCC rule is determined as the PCC rule after the PCC policy decision is made by the standby PCRF.
  • the PCRF may also obtain the PCC rule according to the user information and the subscription information, and the obtained PCC rule may be the same as or different from the original PCC rule.
  • the original PCC rule may be that the primary PCRF is sent to the PCEF during the initial establishment of the IP-Connectivity Access Network (IP-CAN) session, or the original PCC rule may also be on the primary PCRF.
  • the updated PCC rule, that is, the primary PCRF may also be sent to the PCEF during the IP-CAN session update process.
  • the session of the embodiment of the present invention refers to an IP-CAN session.
  • the standby PCRF may send a response message to the PCEF only, that is, a CCA-U message, and the CCA-U message may not carry the PCC rule.
  • the PCEF receives the CCA-U message, it still uses the original PCC rules for charging and policy control.
  • the PCC rule obtained by the standby PCRF is different from the original PCC rule sent by the PCEF, the CCA-U message sent by the standby PCRF to the PCEF may carry a new PCC rule, and then the PCEF performs charging and policy according to the new PCC rule. control.
  • the PCC rule may be the same as the original PCC rule of the PCEF or Differently, the subscription information can be configured locally on the PCRF or obtained from other devices.
  • the configuration information can be configured locally in the PCRF.
  • the session recovery indication information is used to indicate the manner in which the PCEF processes the original bearer and the policy, for example, the original bearer and the policy are unchanged, or the dedicated bearer is deactivated and the default bearer is deactivated. The details can be found in the subsequent embodiments.
  • FIG. 3 is a schematic flowchart of another embodiment of a session recovery method according to the present invention, including: 301: link A between PCEF and PCRF A is activated and used;
  • link B between PCEF and PCRF B is activated and reserved
  • the access network sends an IP-CAN session establishment request to the PCEF.
  • the PCEF sends a Credit Control Request Initial (CCR-I) message to the PCRF A, where the user information is carried.
  • CCR-I Credit Control Request Initial
  • PCRF A establishes a session and makes a PCC policy decision.
  • PCRF A sends a Credit Control Answer Initial (CCA-I) message to the PCEF, including a PCC rule and an event-trigger list;
  • PCEF installs a PCC rule, and monitors a trigger event;
  • CCA-I Credit Control Answer Initial
  • the PCC rules in 306 and 307 can be initial PCC rules.
  • the PCEF sends an IP-CAN session establishment response to the access network.
  • the access network sends an IP-CAN session update request to the PCEF.
  • the PCEF sends a CCR-U message to the PCRF B, including the user information and the initial PCC rules.
  • the PCRF A in order to ensure the consistency of the data on the active and standby PCRFs, the PCRF A not only reports the initial PCC rules to the PCEF, but also sends the initial PCC rules to the standby PCRF, that is, real-time hot backup is required between the active and standby PCRFs.
  • this embodiment does not require real-time hot backup between the active and standby PCRFs, that is, the PCRF A can only send the initial PCC rules to the PCEF and no longer to the PCRF B.
  • the PCEC will send the initial PCC rules to PCRF B.
  • PCRF B reestablishes the session and makes a PCC policy decision.
  • the PCRF B may determine whether to store the corresponding session information according to the user information in the CCR-U message. If there is no corresponding session information, the session may be reconstructed according to the user information.
  • the specific principle of establishing a session may establish a session with the PCRF A according to the user information in the CCR-I message. The principle is the same.
  • the PCC policy decision made by the PCRF B may include: determining the initial PCC rule included in the CCR-U message as the PCC rule on the PCRF B; or, the PCRF B makes a new PCC policy decision according to the user information and the subscription information, and obtains a new one.
  • PCC rules The principle of the specific PCC policy decision can be the same as the PCC policy decision made after the PCRF A receives the CCR-I message.
  • the user information carried in the CCR-U may be different from the user information carried in the CCR-I. Therefore, the new PCC rules obtained by the PCRF B may be different from the initial PCC rules. .
  • the user's policy information can be kept unchanged to ensure that the user's service experience remains unchanged.
  • PCRF B sends a Credit Control Answer Update (CCA-U) message to the PCEF.
  • CCA-U Credit Control Answer Update
  • the PCRF B may only feed back the CCA-U message to the PCEF, and the CCA-U message does not carry the PCC rule, only as a response message; After receiving the CCA-U message, the PCEF keeps the original bearer and policy unchanged, that is, continues to use the initial PCC rules for charging and policy control. Or,
  • the PCRF B may send the new PCC rule to the PCEF, and the PCEF performs charging and policy control according to the new PCC rule.
  • the PCEF sends an IP-CAN session update response to the access network.
  • This embodiment takes PCEF to PCRF B as an example of the initial PCC rule. It can be understood that Gx failover may also occur in the scenario where the PCC rules on the PCEF have been updated, instead of the initial PCC rules. For example, an update process has occurred between the PCEF and the PCRF A, then the original PCC rules Then, the PCC rule used by the PCRF B may be the original PCC rule, or a new PCC rule obtained after a new PCC policy decision.
  • the initial PCC rule is sent to the standby PCRF by using the PCEF, and the schematic diagram of another embodiment of the session recovery method of the present invention is not required.
  • the access network sends an IP-CAN session establishment request to the PCEF.
  • the PCEF sends a CCR-I message to the PCRF A, where the user information is carried;
  • PCRF A establishes a session and makes a PCC policy decision.
  • PCRF A sends CCA-I to PCEF, including PCC rules and trigger events (event-Trigger) ⁇ 1 J table;
  • PCEF installs PCC rules, monitors trigger events
  • the PCC rules in 406 and 407 can be initial PCC rules.
  • the PCEF sends an IP-CAN session establishment response to the access network.
  • Link B between PCEF and PCRF B remains active and is switched to be active (link B active );
  • the access network sends an IP-CAN session update request to the PCEF.
  • steps 401 to 411 For details of the steps 401 to 411, refer to steps 301 to 311, and details are not described herein.
  • the PCEF sends a CCR-U message to the PCRF B, including user information.
  • the PCEF of this embodiment does not need to send a PCC rule to the PCRF B, but the decision is made by the PCRF B.
  • PCRF B reestablishes the session and makes a PCC policy decision
  • the PCRF B may determine whether to store the corresponding session information according to the user information in the CCR-U message. If there is no corresponding session information, the session may be reconstructed according to the user information.
  • the principle of establishing a session can be the same as the principle that PCRF A establishes a session based on user information in a CCR-I message.
  • the PCC policy decision made by PCRF B may include: performing a new PCC policy decision based on the user information and the subscription information to obtain a new PCC rule.
  • the principle of the specific PCC policy decision can be the same as the PCC policy decision made after the PCRF A receives the CCR-I message.
  • the user information carried in the CCR-U may be different from the user information carried in the CCR-I. Therefore, the new PCC rules obtained by the PCRF B may be different from the initial PCC rules. .
  • PCRF B sends a CCA-U to the PCEF, including session recovery indication information
  • the session recovery indication information is used to indicate how the original bearer and policy are handled.
  • the value of the session recovery indication information can be as follows:
  • the PCEF keeps the original bearer and the policy unchanged.
  • the CCA-U message can carry only the session recovery indication information, and does not carry the PCC rule, so that the PCEF keeps the current bearer and the PCC rules of each bearer remain unchanged.
  • PCEF uses the initial PCC rules for billing and policy control.
  • PCEF deactivates all proprietary bearers, replacing the policy on the default bearer with the new PCC rules determined by PCRF B.
  • the CCA-U message also needs to carry the new PCC rule obtained by the PCRF B, and replace the current policy on the current default bearer with the new PCC rule, for example, replacing the initial PCC rule.
  • the secondary scenario ensures that the user does not drop the line because the default bearer is reserved.
  • the original PCC rules on the PCEF may be the initial PCC rules mentioned above, or may be the updated PCC rules.
  • the dedicated bearer may also be referred to as a Packet Data Protocol (PDP), and the default bearer may also be referred to as a primary PDP.
  • PDP Packet Data Protocol
  • the PCEF sends an IP-CAN session update response to the access network.
  • the standby PCRF in this embodiment re-establishes the session and the PCC policy decision after receiving the CCR-U message, and can implement session recovery on the standby PCRF without real-time hot backup of the active and standby PCRFs, thereby reducing signaling interaction and improving the standby PCRF letter. Order processing power.
  • FIG. 5 is a schematic structural diagram of an embodiment of a session recovery device according to the present invention.
  • the device may be a PCRF or a standby PCRF.
  • the device 50 includes a receiving module 51 and a processing module 52.
  • the receiving module 51 is configured to receive a CCR sent by the PCEF. a U message, the CCR-U message is sent after the PCEF determines that a session update is required; the processing module 52 is configured to re-establish a session according to the CCR-U message, and perform a PCC policy decision.
  • the CCR-U message includes user information and an original PCC rule, where the original PCC rule is sent to the primary PCRF during an IP-CAN session initial establishment process or an IP-CAN session update process.
  • the PCEF the processing module is specifically used to:
  • the original PCC rule is determined as a PCC rule obtained after the PCC policy decision; or, according to the user information and the subscription information, a PCC rule is obtained.
  • the device when the PCC rule obtained by the standby PCRF is different from the original PCC rule, the device further includes:
  • a sending module configured to send a CCA-U message to the PCEF, where the CCA-U message includes the new PCC rule, so that the PCEF performs charging and policy according to the new PCC rule. Slightly controlled.
  • the CCR-U message includes user information
  • the processing module is specifically configured to: obtain a PCC rule according to the user information and the subscription information, and obtain session recovery indication information according to the configuration information, where the session recovery indication is The information is used to indicate that the PCEF maintains or modifies the original bearer and the policy.
  • the device further includes:
  • a sending module configured to send a CCA-U message to the PCEF, where the CCA-U message includes the session recovery indication information.
  • the sending module is specifically configured to:
  • the standby PCRF reestablishes the session according to the CCR-U message and performs the PCC policy decision.
  • the primary PCRF does not need to perform hot backup to the standby PCRF in real time, which can reduce signaling interaction and improve Prepare the signaling processing capability of the PCRF.
  • FIG. 6 is a schematic structural diagram of another embodiment of a session recovery device according to the present invention.
  • the device may be a PCEF or located in a PCEF.
  • the device 60 includes a determining module 61 and a sending module 62.
  • the determining module 61 is configured to determine that a session update is required.
  • 62 is configured to send a CCR-U message to the standby PCRF, so that the standby PCRF reestablishes a session according to the CCR-U message and performs a PCC policy decision.
  • the device further includes:
  • a first receiving module configured to receive an original PCC rule sent by the primary PCRF during an initial establishment process of the IP-CAN session or an IP-CAN session update process
  • the sending module is specifically configured to: send a CCR-U message to the standby PCRF, where the CCR-U message includes user information and the original PCC rule, so that the standby PCRF reestablishes a session according to the user information, and
  • the original PCC rule is determined as a PCC rule after the PCC policy decision, or the PCC rule is obtained according to the user information and the subscription information.
  • the device when the standby PCRF obtains a PCC rule that is different from the original PCC rule of the PCEF, the device further includes:
  • a second receiving module configured to receive a CCA-U message sent by the standby PCRF, where the CCA-U
  • the message includes the PCC rule obtained by the standby PCRF, and performs charging and policy control according to the PCC rule obtained by the standby PCRF.
  • the sending module is specifically configured to:
  • the session recovery indication information is used to indicate that the PCEF maintains or modifies the original bearer and the policy
  • the device further includes:
  • the third receiving module is configured to receive a CCA-U message sent by the standby PCRF, where the CCA-U message includes session recovery indication information.
  • the CCA-U message further includes the PCC rule obtained by the standby PCRF, where the device further includes:
  • the processing module is configured to: after receiving the CCA-U message, deactivate all the dedicated bearers, and replace the original PCC rules on the default bearer with the PCC rules obtained by the standby PCEF.
  • the standby PCRF reestablishes the session according to the CCR-U message and performs the PCC policy decision.
  • the primary PCRF does not need to perform hot backup to the standby PCRF in real time, which can reduce signaling interaction and improve Prepare the signaling processing capability of the PCRF.
  • FIG. 7 is a schematic structural diagram of an embodiment of a session recovery system according to the present invention.
  • the system 70 includes a PCEF 71 and a standby PCRF 72.
  • the PCEF 71 is configured to send a CCR-U message after determining that a session update is required; and the PCRF 72 is used according to the description.
  • the CCR-U message reconstructs the session and makes PCC policy decisions.
  • the PCEF is specifically configured to send a CCR-U message after determining that a session update is required, where the CCR-U message includes user information and an original PCC rule, where the original PCC rule is a primary PCRF. Sending to the PCEF during an IP-CAN session initial setup process or an IP-CAN session update process;
  • the standby PCRF is specifically configured to: re-establish a session according to the user message, and determine the original PCC rule as a PCC rule obtained after the PCC policy decision; or obtain a PCC according to the user information and the subscription information. rule.
  • the standby PCRF is further configured to: send a CCA-U message to the PCEF, where the CCA-U is cancelled.
  • the new PCC rule is included in the information, so that the PCEF performs charging and policy control according to the new PCC rule.
  • the PCEF is specifically configured to: send a CCR-U message after receiving an IP-CAN session update request sent by the access network, where the CCR-U message includes user information;
  • the standby PCRF is specifically configured to: re-establish a session according to the user message, and obtain a PCC rule according to the user information and the subscription information, and obtain session recovery indication information according to the configuration information, where the session recovery indication information is used to indicate the location
  • the PCEF maintains or modifies the original bearer and policy; and sends a CCA-U message to the PCEF, where the CCA-U message includes the session recovery indication information.
  • the CCA-U message further includes a PCC rule obtained by using the standby PCRF, where the PCEF is further used to: After receiving the CCA-U message, all the dedicated bearers are deactivated, and the original PCC rules on the default bearer are replaced by the PCC rules obtained by the standby PCEF.
  • the standby PCRF reestablishes the session according to the CCR-U message and performs the PCC policy decision.
  • the primary PCRF does not need to perform hot backup to the standby PCRF in real time, which can reduce signaling interaction and improve Prepare the signaling processing capability of the PCRF.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection between the various components shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place. Or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software function unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program code. .

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Abstract

本发明提供一种会话恢复方法、设备及系统。该方法包括备PCRF接收PCEF发送的CCR-U消息,所述CCR-U消息是所述PCEF在确定需要会话更新后发送的;所述备PCRF根据所述CCR-U消息重建会话,并进行PCC策略决策。本发明实施例可以降低信令交互开销,提高备PCRF的信令处理能力。

Description

会话恢复方法、 设备及系统 技术领域 本发明涉及通信技术, 尤其涉及一种会话恢复方法、 设备及系统。 背景技术
策略与计费控制 (Policy and Charging Control, PCC )架构下, 分组交换 ( Packet Switching, PS ) 网络能够检测到不同的业务流, 并针对业务流进行 服务质量( Quality of Service, QoS )控制和计费统计。 PCC系统中包括策略 与计费执行功能实体 ( Policy and Charging Enforcement Function, PCEF )和 策略与计费规则功能实体( Policy and Charging Rule Function, PCRF ), PCEF 和 PCRF之间的接口为 Gx接口。 为了提高 Gx接口的可靠性, 实际部署时通 常釆用 PCRF主备容灾的组成方式。 用户激活时, 优先选择主 PCRF建立会 话, 如果主 PCRF不可用, 则选择备 PCRF; 用户更新和去激活时, 优先使用 激活时选定的 PCRF,如果激活时选定的 PCRF不可用, 则触发 Gx 失效备援 ( Failover ) 流程选择另一个 PCRF。
主 PCRF和备 PCRF通常位于不同的地理位置, 现有技术中, 主 PCRF 和备 PCRF之间釆用实时热备份的方式, 例如, 两者之间需要实时信令交互 以保证网元间数据的一致性。
但是实时热备份会增加信令交互, 从而影响信令处理能力。 发明内容
有鉴于此, 本发明实施例提供了一种会话恢复方法、 设备及系统, 用以 解决现有技术中主备 PCRF间需要实时信令交互引起的信令处理能力较差的 问题。
第一方面, 提供了一种会话恢复方法, 包括:
备 PCRF接收 PCEF发送的 CCR-U消息,所述 CCR-U消息是所述 PCEF 在确定需要会话更新后发送的;
所述备 PCRF根据所述 CCR-U消息重建会话, 并进行 PCC策略决策。 结合第一方面, 在第一方面的第一种可能的实现方式中, 所述 CCR-U消 息中包含用户信息和原有的 PCC规则, 所述原有的 PCC规则是主 PCRF在 IP-CAN会话初始建立过程或 IP连接访问网络 IP-CAN会话更新过程中发送 给所述 PCEF, 所述进行 PCC策略决策, 包括:
将所述原有的 PCC规则确定为 PCC策略决策后得到的 PCC规则;或者, 根据所述用户信息和签约信息 , 得到 PCC规则。
结合第一方面的第一种可能的实现方式, 在第一方面的第二种可能的实 现方式中, 当所述备 PCRF得到的 PCC规则为与所述原有的 PCC规则不同 的新的 PCC规则时, 所述方法还包括:
所述备 PCRF向所述 PCEF发送信用控制应答更新 CCA-U消息, 所述 CCA-U消息中包含所述新的 PCC规则, 使得所述 PCEF根据所述新的 PCC 规则进行计费和策略控制。
结合第一方面, 在第一方面的第三种可能的实现方式中, 所述 CCR-U消 息中包含用户信息, 所述进行 PCC策略决策, 包括: 根据所述用户信息和签 约信息, 得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会话恢 复指示信息用于指示所述 PCEF保持或修改原有承载和策略;
所述方法还包括:
所述备 PCRF向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含 所述会话恢复指示信息。
结合第一方面的第三种可能的实现方式, 在第一方面的第四种可能的实 现方式中, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策 略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 以便所述 PCEF接收到所述 CCA-U消息后,去激活所有的专有承载,并用所述备 PCEF 得到的 PCC规则替换缺省承载上的原有 PCC规则。
第二方面, 提供了一种会话恢复方法, 包括:
PCEF确定需要会话更新;
所述 PCEF向备 PCRF发送 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 PCC策略决策。
结合第二方面, 在第二方面的第一种可能的实现方式中, 还包括: 所述 PCEF接收主 PCRF在 IP连接访问网络 IP-CAN会话初始建立过程 或 IP-CAN会话更新过程中发送的原有的 PCC规则;
所述 PCEF向备 PCRF发送 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 PCC策略决策, 包括:
所述 PCEF向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户 信息和所述原有的 PCC规则,使得所述备 PCRF根据所述用户信息重建会话, 以及将所述原有的 PCC规则确定为 PCC策略决策后的 PCC规则, 或者根据 所述用户信息以及签约信息得到 PCC规则。
结合第二方面的第一种可能的实现方式, 在第二方面的第二种可能的实 现方式中,当所述备 PCRF得到 PCC规则与所述 PCEF原有的 PCC规则不同 时, 所述方法还包括:
所述 PCEF接收所述备 PCRF发送的信用控制应答更新 CCA-U消息,所 述 CCA-U消息中包含所述备 PCRF得到的 PCC规则, 并根据所述备 PCRF 得到的 PCC规则进行计费和策略控制。
结合第二方面, 在第二方面的第三种可能的实现方式中, 所述 PCEF向 备 PCRF发送 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会 话并进行 PCC策略决策, 包括:
所述 PCEF向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户 信息, 使得所述备 PCRF根据所述用户信息重建会话, 以及根据所述用户信 息和签约信息得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会 话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略;
所述方法还包括:
所述 PCEF接收所述备 PCRF发送的 CCA-U消息, 所述 CCA-U消息中 包含会话恢复指示信息。
结合第二方面的第三种可能的实现方式, 在第二方面的第四种可能的实 现方式中, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策 略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 所述方法 还包括:
所述 PCEF接收到所述 CCA-U消息后, 去激活所有的专用承载, 并用所 述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
第三方面, 提供了一种会话恢复设备, 包括: 接收模块, 用于接收 PCEF发送的 CCR-U消息;
处理模块, 用于根据所述 CCR-U消息重建会话, 并进行 PCC策略决策。 结合第三方面, 在第三方面的第一种可能的实现方式中, 所述 CCR-U消 息中包含用户信息和原有的 PCC规则, 所述原有的 PCC规则是主 PCRF在 IP连接访问网络 IP-CAN会话初始建立过程或 IP-CAN会话更新过程中发送 给所述 PCEF, 所述处理模块具体用于:
将所述原有的 PCC规则确定为 PCC策略决策后得到的 PCC规则;或者, 根据所述用户信息和签约信息 , 得到 PCC规则。
结合第三方面的第一种可能的实现方式, 在第三方面的第二种可能的实 现方式中, 当所述备 PCRF得到的 PCC规则为与所述原有的 PCC规则不同 的新的 PCC规则时, 所述设备还包括:
发送模块, 用于向所述 PCEF发送信用控制应答更新 CCA-U消息, 所述 CCA-U消息中包含所述新的 PCC规则, 使得所述 PCEF根据所述新的 PCC 规则进行计费和策略控制。
结合第三方面, 在第三方面的第三种可能的实现方式中, 所述 CCR-U消 息中包含用户信息, 所述处理模块具体用于: 根据所述用户信息和签约信息, 得到 PCC 规则和会话恢复指示信息, 所述会话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略; 所述设备还包括:
发送模块, 用于向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包 含所述会话恢复指示信息。
结合第三方面的第三种可能的实现方式, 在第三方面的第四种可能的实 现方式中, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策 略时, 所述发送模块具体用于:
向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复 指示信息以及所述备 PCRF得到的 PCC规则, 以便所述 PCEF接收到所述 CCA-U消息后,去激活所有的专有承载, 并用所述备 PCEF得到的 PCC规则 替换缺省承载上的原有 PCC规则。
第四方面, 提供了一种会话恢复设备, 包括:
确定模块, 用于确定需要会话更新;
发送模块, 用于向备 PCRF发送 CCR-U消息, 使得所述备 PCRF根据所 述 CCR-U消息重建会话并进行 PCC策略决策。
结合第四方面, 在第四方面的第一种可能的实现方式中, 还包括: 第一接收模块, 用于接收主 PCRF在 IP连接访问网络 IP-CAN会话初始 建立过程或 IP-CAN会话更新过程中发送的原有的 PCC规则;
所述发送模块具体用于: 向备 PCRF发送 CCR-U消息, 所述 CCR-U消 息中包含用户信息和所述原有的 PCC规则, 使得所述备 PCRF根据所述用户 信息重建会话, 以及将所述原有的 PCC规则确定为 PCC策略决策后的 PCC 规则, 或者根据所述用户信息以及签约信息得到 PCC规则。
结合第四方面的第一种可能的实现方式, 在第四方面的第二种可能的实 现方式中,当所述备 PCRF得到 PCC规则与所述 PCEF原有的 PCC规则不同 时, 所述设备还包括:
第三接收模块, 用于接收所述备 PCRF发送的信用控制应答更新 CCA-U 消息, 所述 CCA-U消息中包含所述备 PCRF得到的 PCC规则, 并根据所述 备 PCRF得到的 PCC规则进行计费和策略控制。
结合第四方面, 在第四方面的第三种可能的实现方式中, 所述发送模块 具体用于:
向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户信息, 使得 所述备 PCRF根据所述用户信息重建会话, 以及根据所述用户信息和签约信 息得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会话恢复指示 信息用于指示所述 PCEF保持或修改原有承载和策略;
所述设备还包括:
第四接收模块,用于接收所述备 PCRF发送的 CCA-U消息,所述 CCA-U 消息中包含会话恢复指示信息。
结合第四方面的第三种可能的实现方式, 在第四方面的第四种可能的实 现方式中, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策 略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 所述设备 还包括:
处理模块, 用于接收到所述 CCA-U消息后, 去激活所有的专用承载, 并 用所述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
第五方面, 提供了一种会话恢复系统, 包括: PCEF, 用于在确定需要会话更新后发送 CCR-U消息;
备 PCRF, 用于根据所述 CCR-U消息重建会话, 并进行 PCC策略决策。 结合第五方面, 在第五方面的第一种可能的实现方式中, 所述 PCEF具 体用于: 在确定需要会话更新后发送 CCR-U消息, 所述 CCR-U消息中包含 用户信息和原有的 PCC规则, 所述原有的 PCC规则是主 PCRF在 IP连接访 问网络 IP-CAN 会话初始建立过程或 IP-CAN会话更新过程中发送给所述 PCEF;
所述备 PCRF具体用于: 根据所述用户信息重建会话, 以及, 将所述原 有的 PCC规则确定为 PCC策略决策后得到的 PCC规则; 或者, 根据所述用 户信息和签约信息, 得到 PCC规则。
结合第五方面的第一种可能的实现方式, 在第五方面的第二种可能的实 现方式中, 当所述备 PCRF得到的 PCC规则与所述原有的 PCC规则不同时, 所述备 PCRF还用于: 向所述 PCEF发送信用控制应答更新 CCA-U消息, 所 述 CCA-U消息中包含所述新的 PCC规则,使得所述 PCEF根据所述新的 PCC 规则进行计费和策略控制。
结合第五方面, 在第五方面的第三种可能的实现方式中, 所述 PCEF具 体用于: 在确定需要会话更新后发送 CCR-U消息, 所述 CCR-U消息中包含 用户信息;
所述备 PCRF具体用于: 根据所述用户消息重建会话, 以及, 根据所述 用户信息和签约信息,得到 PCC规则,根据配置信息得到会话恢复指示信息, 所述会话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略; 并 向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复指示 信息。
结合第五方面的第三种可能的实现方式, 在第五方面的第四种可能的实 现方式中, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策 略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 所述 PCEF 还用于: 接收到所述 CCA-U 消息后, 去激活所有的专有承载, 并用所述备 PCRF得到的 PCC规则替换缺省承载上的原有 PCC规则。
通过上述技术方案, 在 PCEF向备 PCRF发送 CCR-U消息后, 备 PCRF 根据该 CCR-U消息重建会话以及进行 PCC策略决策, 不需要主 PCRF实时 向备 PCRF进行热备份, 可以降低信令交互, 提高备 PCRF的信令处理能力。 附图说明 为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中 所需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图是本发 明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的 前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明会话恢复方法一实施例的流程示意图;
图 2为本发明会话恢复方法另一实施例的流程示意图;
图 3为本发明会话恢复方法另一实施例的流程示意图;
图 4为本发明会话恢复方法另一实施例的流程示意图;
图 5为本发明会话恢复设备一实施例的结构示意图;
图 6为本发明会话恢复设备另一实施例的结构示意图;
图 7为本发明会话恢复系统一实施例的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明会话恢复方法一实施例的流程示意图, 本实施例的执行主 体为备 PCRF, 本实施例包括:
101:备 PCRF接收 PCEF发送的信用控制请求更新( Credit Control Request Update, CCR-U )消息, 所述 CCR-U消息是所述 PCEF在确定需要会话更新 后发送的;
102: 所述备 PCRF根据所述 CCR-U消息重建会话, 并进行 PCC策略决 來。
相应的 , PCEF执行的流程如图 2所示, 包括:
201 : PCEF确定需要会话更新; 202: 所述 PCEF向备 PCRF发送 CCR-U消息 , 使得所述备 PCRF根据 所述 CCR-U消息重建会话并进行 PCC策略决策。
其中, PCEF 确定需要会话更新的条件可以是: 接收到接入网发送的 IP-CAN会话更新请求, 或者, 内部的定时器超时等。
可选的, PCEF可以在向备 PCRF发送的 CCR-U消息中包含用户信息和 原有的 PCC规则, 备 PCRF接收到该 CCR-U消息后, 可以根据用户信息重 建会话, 以及, 将原有的 PCC规则确定为备 PCRF进行 PCC策略决策后的 PCC规则, 或者, 备 PCRF也可以根据用户信息和签约信息得到 PCC规则, 该得到的 PCC规则可以与原有的 PCC规则相同或不同。 该原有的 PCC规则 可以是主 PCRF在 IP连接访问网络( IP-Connectivity Access Network, IP-CAN ) 会话初始建立过程中发送给 PCEF的, 或者, 该原有的 PCC规则也可以是主 PCRF上更新后的 PCC规则, 即也可以是主 PCRF在 IP-CAN会话更新过程 中发送给 PCEF的。 本发明实施例的会话是指 IP-CAN会话。
对应的,当备 PCRF得到的 PCC规则与 PCEF发送的原有的 PCC规则相 同时, 备 PCRF可以仅向 PCEF发送响应消息, 即 CCA-U消息, 该 CCA-U 消息中可以不携带 PCC规则, PCEF接收到 CCA-U消息时依然釆用原有的 PCC规则进行计费和策略控制。 当备 PCRF得到的 PCC规则与 PCEF发送的 原有的 PCC规则不同时, 备 PCRF发送给 PCEF的 CCA-U消息中可以携带 新的 PCC规则, 之后 PCEF根据该新的 PCC规则进行计费与策略控制。 根据 CCR-U消息中的用户信息重建会话,以及根据用户信息和签约信息进行 PCC策略决策得到 PCC规则, 以及根据配置信息得到会话恢复指示信息, 该 PCC规则可以与 PCEF原有的 PCC规则相同或不同, 签约信息可以配置在 PCRF本地或者从其它设备上获取, 配置信息可以配置在 PCRF本地。会话恢 复指示信息用于指示 PCEF对原有承载和策略的处理方式, 例如, 保持原有 承载及策略不变, 或者去激活专有承载以及去激活缺省承载的策略。 具体内 容可以参见后续实施例。
本实施例在 PCEF向备 PCRF发送 CCR-U消息后,备 PCRF根据该 CCR-U 消息重建会话以及进行 PCC策略决策, 不需要主 PCRF实时向备 PCRF进行 热备份, 可以降低信令交互, 提高备 PCRF的信令处理能力。 图 3为本发明会话恢复方法另一实施例的流程示意图, 包括: 301 : PCEF与 PCRF A之间的链路 A激活并主用;
302: PCEF与 PCRF B之间的链路 B激活并备用;
303: 接入网向 PCEF发送 IP-CAN会话建立请求;
304: PCEF向 PCRF A发送信用控制请求初始 (Credit Control Request Initial , CCR-I ) 消息, 其中携带用户信息。
305: PCRF A建立会话, 进行 PCC策略决策。
306: PCRF A向 PCEF发送信用控制应答初始 (Credit Control Answer Initial, CCA-I ) 消息, 包括 PCC规则和触发事件(event-Trigger ) 列表; 307: PCEF安装 PCC规则, 监控触发事件;
306和 307中的 PCC规则可以是初始的 PCC规则。
308: PCEF向接入网发送 IP-CAN会话建立响应;
至此, 完成了 IP-CAN会话的初始建立, 上述的各步骤的具体内容可以 参照现有技术。
309: PCEF与 PCRF A之间的链路 A故障 ( link A down );
310: PCEF与 PCRF B之间的链路 B保持激活并切换为主用;
311 : 接入网向 PCEF发送 IP-CAN会话更新请求;
312: PCEF向 PCRF B发送 CCR-U消息, 包括用户信息和初始的 PCC 规则。
类似现有技术, 当主 PCRF上的链路故障后, PCRF与 PCEF之间的主用 链路将切换到备 PCRF上。 现有技术中, 为了保证主备 PCRF上的数据一致 性, PCRF A不仅向 PCEF上报初始的 PCC规则 , 也会将初始的 PCC规则发 送给备 PCRF , 也就是主备 PCRF间需要实时热备份。
与现有技术不同的是, 本实施例不需要主备 PCRF间实时热备份, 也就 是 PCRF A可以只将初始的 PCC规则发送给 PCEF, 不再发给 PCRF B。 而在 需要更新 IP-CAN会话时 , 由 PCEF将初始的 PCC规则发送给 PCRF B。
313: PCRF B重建会话, 并进行 PCC策略决策。
其中, PCRF B可以根据 CCR-U消息中的用户信息, 判断是否存储对应 的会话信息, 如果没有对应的会话信息, 则可以根据用户信息重建会话。 具 体的建立会话的原理可以与 PCRF A根据 CCR-I消息中的用户信息建立会话 的原理相同。
PCRF B进行的 PCC策略决策可以包括: 将 CCR-U消息中包含的初始 PCC规则确定为 PCRF B上的 PCC规则; 或者, PCRF B根据用户信息以及 签约信息进行新的 PCC策略决策, 得到新的 PCC规则。 具体的 PCC策略决 策的原理可以与 PCRF A接收到 CCR-I消息后进行的 PCC策略决策的原理相 同。另外, 由于 PCRF B是在更新流程中, CCR-U中携带的用户信息与 CCR-I 中携带的用户信息可能是不同的, 因此, PCRF B得到的新的 PCC规则可能 与初始的 PCC规则不同。
当 PCRF B釆用初始的 PCC规则时, 可以保证用户的策略信息不变, 以 保证用户的业务体验不变。
314: PCRF B向 PCEF发送信用控制应答更新 (Credit Control Answer Update, CCA-U ) 消息。
可选的,如果 PCRF B经过 PCC策略决策后,确定釆用初始的 PCC规则, 则 PCRF B可以只向 PCEF反馈 CCA-U消息, 该 CCA-U消息中不携带 PCC 规则, 只作为响应消息; PCEF接收到该 CCA-U消息后, 保持原有承载及策 略不变, 也就是继续釆用初始的 PCC规则进行计费与策略控制。 或者,
可选的, 如果 PCRF B经过 PCC策略决策后, 确定出新的 PCC规则, 则 PCRF B可以将新的 PCC规则发送给 PCEF, PCEF根据该新的 PCC规则进行 计费与策略控制。
315: PCEF向接入网发送 IP-CAN会话更新响应。
本实施例以 PCEF向 PCRF B上^艮初始的 PCC规则为例。可以理解的是, Gx failover也可能发生在 PCEF上的 PCC规则已发生更新的场景, 而不是初 始的 PCC规则 , 例如, PCEF与 PCRF A之间已经发生过更新流程, 那么 , 原有的 PCC规则, 之后, PCRF B釆用的 PCC规则可以是该原有的 PCC规 则, 或者进行新的 PCC策略决策后得到的新的 PCC规则。
本实施例通过 PCEF向备 PCRF发送初始的 PCC规则, 可以在不需要主 图 4为本发明会话恢复方法另一实施例的流程示意图, 包括:
401: PCEF与 PCRF A之间的链路 A激活并主用; 402: PCEF与 PCRF B之间的链路 B激活并备用;
403: 接入网向 PCEF发送 IP-CAN会话建立请求;
404: PCEF向 PCRF A发送 CCR-I消息, 其中携带用户信息;
405: PCRF A建立会话, 进行 PCC策略决策;
406 : PCRF A 向 PCEF 发送 CCA-I , 包括 PCC 规则和触发事件 ( event-Trigger ) 歹1 J表;
407: PCEF安装 PCC规则, 监控触发事件;
406和 407中的 PCC规则可以是初始的 PCC规则。
408: PCEF向接入网发送 IP-CAN会话建立响应;
409: PCEF与 PCRF A之间的链路 A故障 ( link A down );
410: PCEF 与 PCRF B之间的链路 B保持激活并切换为主用 (link B active );
411 : 接入网向 PCEF发送 IP-CAN会话更新请求;
步骤 401〜411的具体内容可以参见步骤 301〜311 , 不再赘述。
412: PCEF向 PCRF B发送 CCR-U消息 , 包括用户信息。
与上一实施例不同的是, 本实施例的 PCEF不需要向 PCRF B发送 PCC 规则 , 而由 PCRF B进行决策。
413: PCRF B重建会话, 并进行 PCC策略决策;
其中, PCRF B可以根据 CCR-U消息中的用户信息, 判断是否存储对应 的会话信息, 如果没有对应的会话信息, 则可以根据用户信息重建会话。 具 体的建立会话的原理可以与 PCRF A根据 CCR-I消息中的用户信息建立会话 的原理相同。
PCRF B进行的 PCC策略决策可以包括: 根据用户信息以及签约信息进 行新的 PCC策略决策, 得到新的 PCC规则。 具体的 PCC策略决策的原理可 以与 PCRF A接收到 CCR-I消息后进行的 PCC策略决策的原理相同。 另外, 由于 PCRF B是在更新流程中, CCR-U中携带的用户信息与 CCR-I中携带的 用户信息可能是不同的, 因此, PCRF B得到的新的 PCC规则可能与初始的 PCC规则不同。
414: PCRF B向 PCEF发送 CCA-U, 包括会话恢复指示信息;
会话恢复指示信息用于指示对原有承载和策略的处理方式。 例如, 会话恢复指示信息的取值可以如下:
0: PCEF保持原有承载和策略不变, 此时, CCA-U消息中可以只携带会 话恢复指示信息, 不携带 PCC规则, 以指示 PCEF保持当前的承载以及每个 承载的 PCC规则不变,例如 PCEF釆用初始的 PCC规则进行计费及策略控制。
1 : PCEF去激活所有的专有承载, 将缺省承载上的策略替换为 PCRF B 确定的新的 PCC规则。此时, CCA-U消息中还需要携带 PCRF B得到的新的 PCC规则, 用该新的 PCC规则替换当前缺省承载上的当前策略, 如替换初始 PCC规则。 次场景该场景由于保留了缺省承载, 可以保证用户不掉线。
可以理解的, PCEF上原有的 PCC规则可能是上述的初始的 PCC规则, 也可能是更新后的 PCC规则。
另外, 随着系统的不同, 专有承载也可以称为二次分组数据协议 ( Packet Data Protocol , PDP ) , 缺省承载也可以称为一次 PDP。
415: PCEF向接入网发送 IP-CAN会话更新响应。
本实施例的备 PCRF在接收到 CCR-U消息后会重建会话以及 PCC策略 决策, 可以不需要主备 PCRF实时热备份而实现备 PCRF上的会话恢复, 从 而降低信令交互, 提高备 PCRF信令处理能力。
图 5 为本发明会话恢复设备一实施例的结构示意图, 该设备可以为备 PCRF或者位于备 PCRF中, 该设备 50包括接收模块 51和处理模块 52; 接 收模块 51用于接收 PCEF发送的 CCR-U消息,所述 CCR-U消息是所述 PCEF 确定需要会话更新后发送的; 处理模块 52用于根据所述 CCR-U消息重建会 话, 并进行 PCC策略决策。
可选的, 所述 CCR-U消息中包含用户信息和原有的 PCC规则, 所述原 有的 PCC规则是主 PCRF在 IP-CAN会话初始建立过程或 IP-CAN会话更新 过程中发送给所述 PCEF , 所述处理模块具体用于:
将所述原有的 PCC规则确定为 PCC策略决策后得到的 PCC规则;或者, 根据所述用户信息和签约信息 , 得到 PCC规则。
可选的, 当所述备 PCRF得到的 PCC规则与所述原有的 PCC规则不同 时, 所述设备还包括:
发送模块, 用于向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包 含所述新的 PCC规则,使得所述 PCEF根据所述新的 PCC规则进行计费和策 略控制。
可选的, 所述 CCR-U消息中包含用户信息, 所述处理模块具体用于: 根 据所述用户信息和签约信息, 得到 PCC规则, 根据配置信息得到会话恢复指 示信息, 所述会话恢复指示信息用于指示所述 PCEF保持或修改原有承载和 策略; 所述设备还包括:
发送模块, 用于向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包 含所述会话恢复指示信息。
可选的, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和 策略时, 所述发送模块具体用于:
向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复 指示信息以及所述备 PCRF得到的 PCC规则, 以便所述 PCEF接收到所述 CCA-U消息后,去激活所有的专有承载, 并用所述备 PCEF得到的 PCC规则 替换缺省承载上的原有 PCC规则。
本实施例在 PCEF向备 PCRF发送 CCR-U消息后,备 PCRF根据该 CCR-U 消息重建会话以及进行 PCC策略决策, 不需要主 PCRF实时向备 PCRF进行 热备份, 可以降低信令交互, 提高备 PCRF的信令处理能力。
图 6 为本发明会话恢复设备另一实施例的结构示意图, 该设备可以为 PCEF或者位于 PCEF中, 该设备 60包括确定模块 61和发送模块 62; 确定 模块 61用于确定需要会话更新;发送模块 62用于向备 PCRF发送 CCR-U消 息,使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 PCC策略决策。
可选的, 该设备还包括:
第一接收模块, 用于接收主 PCRF 在 IP-CAN 会话初始建立过程或 IP-CAN会话更新过程中发送的原有的 PCC规则;
所述发送模块具体用于: 向备 PCRF发送 CCR-U消息, 所述 CCR-U消 息中包含用户信息和所述原有的 PCC规则, 使得所述备 PCRF根据所述用户 信息重建会话, 以及将所述原有的 PCC规则确定为 PCC策略决策后的 PCC 规则, 或者根据所述用户信息以及签约信息得到 PCC规则。
可选的,当所述备 PCRF得到 PCC规则与所述 PCEF原有的 PCC规则不 同时, 所述设备还包括:
第二接收模块,用于接收所述备 PCRF发送的 CCA-U消息,所述 CCA-U 消息中包含所述备 PCRF得到的 PCC规则, 并根据所述备 PCRF得到的 PCC 规则进行计费和策略控制。
可选的, 所述发送模块具体用于:
向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户信息, 使得 所述备 PCRF根据所述用户信息重建会话, 以及根据所述用户信息和签约信 息得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会话恢复指示 信息用于指示所述 PCEF保持或修改原有承载和策略;
所述设备还包括:
第三接收模块,用于接收所述备 PCRF发送的 CCA-U消息,所述 CCA-U 消息中包含会话恢复指示信息。
可选的, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和 策略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 所述设 备还包括:
处理模块, 用于接收到所述 CCA-U消息后, 去激活所有的专用承载, 并 用所述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
本实施例在 PCEF向备 PCRF发送 CCR-U消息后,备 PCRF根据该 CCR-U 消息重建会话以及进行 PCC策略决策, 不需要主 PCRF实时向备 PCRF进行 热备份, 可以降低信令交互, 提高备 PCRF的信令处理能力。
图 7为本发明会话恢复系统一实施例的结构示意图,该系统 70包括 PCEF 71和备 PCRF 72; PCEF 71用于在确定需要会话更新后发送 CCR-U消息;备 PCRF 72用于根据所述 CCR-U消息重建会话, 并进行 PCC策略决策。
可选的,所述 PCEF具体用于:在确定需要会话更新后发送 CCR-U消息, 所述 CCR-U消息中包含用户信息和原有的 PCC规则, 所述原有的 PCC规则 是主 PCRF在 IP-CAN会话初始建立过程或 IP-CAN会话更新过程中发送给所 述 PCEF;
所述备 PCRF具体用于: 根据所述用户消息重建会话, 以及, 将所述原 有的 PCC规则确定为 PCC策略决策后得到的 PCC规则; 或者, 根据所述用 户信息和签约信息, 得到 PCC规则。
可选的, 当所述备 PCRF得到的 PCC规则与所述原有的 PCC规则不同 时, 所述备 PCRF还用于: 向所述 PCEF发送 CCA-U消息, 所述 CCA-U消 息中包含所述新的 PCC规则,使得所述 PCEF根据所述新的 PCC规则进行计 费和策略控制。
可选的, 所述 PCEF具体用于: 在接收到接入网发送的 IP-CAN会话更 新请求后发送 CCR-U消息, 所述 CCR-U消息中包含用户信息;
所述备 PCRF具体用于: 根据所述用户消息重建会话, 以及, 根据所述 用户信息和签约信息,得到 PCC规则,根据配置信息得到会话恢复指示信息, 所述会话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略; 并 向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复指示 信息。
可选的, 当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和 策略时,所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则,所述 PCEF 还用于: 接收到所述 CCA-U 消息后, 去激活所有的专有承载, 并用所述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
本实施例在 PCEF向备 PCRF发送 CCR-U消息后,备 PCRF根据该 CCR-U 消息重建会话以及进行 PCC策略决策, 不需要主 PCRF实时向备 PCRF进行 热备份, 可以降低信令交互, 提高备 PCRF的信令处理能力。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以上 述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功 能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置和单元的具体 工作过程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到 另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相 互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间 接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用软件功能单 元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售 或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本 申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的 全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存储在一个 存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)或处理器(processor )执行本申请各个实施例所 述方法的全部或部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读 存储器(ROM, Read-Only Memory ),随机存取存储器(RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对其限制; 尽管参照前述实施例对本申请进行了详细的说明, 本领域的普通技术人员应 当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其 中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案 的本质脱离本申请各实施例技术方案的精神和范围。

Claims

权 利 要求 书
1、 一种会话恢复方法, 其特征在于, 包括:
备策略与计费规则功能实体 PCRF接收策略与计费执行功能实体 PCEF 发送的信用控制请求更新 CCR-U消息, 所述 CCR-U消息是所述 PCEF在确 定需要会话更新后发送的;
所述备 PCRF根据所述 CCR-U消息重建会话, 并进行策略与计费控制 PCC策略决策。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 CCR-U消息中包含 用户信息和原有的 PCC规则,所述原有的 PCC规则是主 PCRF在 IP-CAN会 话初始建立过程或 IP 连接访问网络 IP-CAN 会话更新过程中发送给所述 PCEF, 所述进行 PCC策略决策, 包括:
将所述原有的 PCC规则确定为 PCC策略决策后得到的 PCC规则;或者, 根据所述用户信息和签约信息 , 得到 PCC规则。
3、 根据权利要求 2所述的方法, 其特征在于, 当所述备 PCRF得到的 PCC规则为与所述原有的 PCC规则不同的新的 PCC规则时, 所述方法还包 括:
所述备 PCRF向所述 PCEF发送信用控制应答更新 CCA-U消息, 所述 CCA-U消息中包含所述新的 PCC规则, 使得所述 PCEF根据所述新的 PCC 规则进行计费和策略控制。
4、 根据权利要求 1所述的方法, 其特征在于, 所述 CCR-U消息中包含 用户信息, 所述进行 PCC策略决策, 包括: 根据所述用户信息和签约信息, 得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会话恢复指示信 息用于指示所述 PCEF保持或修改原有承载和策略;
所述方法还包括:
所述备 PCRF向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含 所述会话恢复指示信息。
5、 根据权利要求 4所述的方法, 其特征在于,
当所述会话恢复指示信息用于指示所述 PCEF修改原有承载和策略时, 所述 CCA-U消息中还包含所述备 PCRF得到的 PCC规则, 以便所述 PCEF 接收到所述 CCA-U消息后, 去激活所有的专有承载, 并用所述备 PCEF得到 的 PCC规则替换缺省承载上的原有 PCC规则。
6、 一种会话恢复方法, 其特征在于, 包括:
策略与计费执行功能实体 PCEF确定需要会话更新;
所述 PCEF向备策略与计费规则功能实体 PCRF发送信用控制请求更新 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会话并进行策略 与计费控制 PCC策略决策。
7、 根据权利要求 6所述的方法, 其特征在于, 还包括:
所述 PCEF接收主 PCRF在 IP连接访问网络 IP-CAN会话初始建立过程 或 IP-CAN会话更新过程中发送的原有的 PCC规则;
所述 PCEF向备 PCRF发送 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 PCC策略决策, 包括:
所述 PCEF向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户 信息和所述原有的 PCC规则,使得所述备 PCRF根据所述用户信息重建会话, 以及将所述原有的 PCC规则确定为 PCC策略决策后的 PCC规则, 或者根据 所述用户信息以及签约信息得到 PCC规则。
8、 根据权利要求 7所述的方法, 其特征在于, 当所述备 PCRF得到 PCC 规则与所述 PCEF原有的 PCC规则不同时, 所述方法还包括:
所述 PCEF接收所述备 PCRF发送的信用控制应答更新 CCA-U消息,所 述 CCA-U消息中包含所述备 PCRF得到的 PCC规则, 并根据所述备 PCRF 得到的 PCC规则进行计费和策略控制。
9、 根据权利要求 6所述的方法, 其特征在于, 所述 PCEF向备 PCRF发 送 CCR-U消息,使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 PCC 策略决策, 包括:
所述 PCEF向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户 信息, 使得所述备 PCRF根据所述用户信息重建会话, 以及根据所述用户信 息和签约信息得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会 话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略;
所述方法还包括:
所述 PCEF接收所述备 PCRF发送的 CCA-U消息, 所述 CCA-U消息中 包含会话恢复指示信息。
10、 根据权利要求 9所述的方法, 其特征在于, 当所述会话恢复指示信 息用于指示所述 PCEF修改原有承载和策略时,所述 CCA-U消息中还包含所 述备 PCRF得到的 PCC规则, 所述方法还包括:
所述 PCEF接收到所述 CCA-U消息后, 去激活所有的专用承载, 并用所 述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
11、 一种会话恢复设备, 其特征在于, 包括:
接收模块, 用于接收策略与计费执行功能实体 PCEF发送的信用控制请 求更新 CCR-U消息, 所述 CCR-U消息是所述 PCEF在确定需要会话更新后 发送的;
处理模块, 用于根据所述 CCR-U消息重建会话, 并进行信用控制请求更 新 PCC策略决策。
12、 根据权利要求 11所述的设备, 其特征在于, 所述 CCR-U消息中包 含用户信息和原有的 PCC规则, 所述原有的 PCC规则是主 PCRF在 IP连接 访问网络 IP-CAN会话初始建立过程或 IP-CAN会话更新过程中发送给所述 PCEF, 所述处理模块具体用于:
将所述原有的 PCC规则确定为 PCC策略决策后得到的 PCC规则;或者, 根据所述用户信息和签约信息 , 得到 PCC规则。
13、 根据权利要求 12所述的设备, 其特征在于, 当所述备 PCRF得到的 PCC规则为与所述原有的 PCC规则不同的新的 PCC规则时, 所述设备还包 括:
发送模块, 用于向所述 PCEF发送信用控制应答更新 CCA-U消息, 所述 CCA-U消息中包含所述新的 PCC规则, 使得所述 PCEF根据所述新的 PCC 规则进行计费和策略控制。
14、 根据权利要求 11所述的设备, 其特征在于, 所述 CCR-U消息中包 含用户信息, 所述处理模块具体用于: 根据所述用户信息和签约信息, 得到 PCC规则和会话恢复指示信息, 所述会话恢复指示信息用于指示所述 PCEF 保持或修改原有承载和策略; 所述设备还包括:
发送模块, 用于向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包 含所述会话恢复指示信息。
15、 根据权利要求 14所述的设备, 其特征在于, 当所述会话恢复指示信 息用于指示所述 PCEF修改原有承载和策略时, 所述发送模块具体用于: 向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复 指示信息以及所述备 PCRF得到的 PCC规则, 以便所述 PCEF接收到所述 CCA-U消息后,去激活所有的专有承载, 并用所述备 PCEF得到的 PCC规则 替换缺省承载上的原有 PCC规则。
16、 一种会话恢复设备, 其特征在于, 包括:
确定模块, 用于确定需要会话更新;
发送模块, 用于向备策略与计费规则功能实体 PCRF发送信用控制请求 更新 CCR-U消息, 使得所述备 PCRF根据所述 CCR-U消息重建会话并进行 策略与计费控制 PCC策略决策。
17、 根据权利要求 16所述的设备, 其特征在于, 还包括:
第一接收模块, 用于接收主 PCRF在 IP连接访问网络 IP-CAN会话初始 建立过程或 IP-CAN会话更新过程中发送的原有的 PCC规则;
所述发送模块具体用于: 向备 PCRF发送 CCR-U消息, 所述 CCR-U消 息中包含用户信息和所述原有的 PCC规则, 使得所述备 PCRF根据所述用户 信息重建会话, 以及将所述原有的 PCC规则确定为 PCC策略决策后的 PCC 规则, 或者根据所述用户信息以及签约信息得到 PCC规则。
18、 根据权利要求 17所述的设备, 其特征在于, 当所述备 PCRF得到 PCC规则与所述 PCEF原有的 PCC规则不同时, 所述设备还包括:
第三接收模块, 用于接收所述备 PCRF发送的信用控制应答更新 CCA-U 消息, 所述 CCA-U消息中包含所述备 PCRF得到的 PCC规则, 并根据所述 备 PCRF得到的 PCC规则进行计费和策略控制。
19、根据权利要求 16所述的设备,其特征在于,所述发送模块具体用于: 向备 PCRF发送 CCR-U消息, 所述 CCR-U消息中包含用户信息, 使得 所述备 PCRF根据所述用户信息重建会话, 以及根据所述用户信息和签约信 息得到 PCC规则, 根据配置信息得到会话恢复指示信息, 所述会话恢复指示 信息用于指示所述 PCEF保持或修改原有承载和策略;
所述设备还包括:
第四接收模块,用于接收所述备 PCRF发送的 CCA-U消息,所述 CCA-U 消息中包含会话恢复指示信息。
20、 根据权利要求 19所述的设备, 其特征在于, 当所述会话恢复指示信 息用于指示所述 PCEF修改原有承载和策略时,所述 CCA-U消息中还包含所 述备 PCRF得到的 PCC规则, 所述设备还包括:
处理模块, 用于接收到所述 CCA-U消息后, 去激活所有的专用承载, 并 用所述备 PCEF得到的 PCC规则替换缺省承载上的原有 PCC规则。
21、 一种会话恢复系统, 其特征在于, 包括:
策略与计费执行功能实体 PCEF,用于在确定需要会话更新后发送信用控 制请求更新 CCR-U消息;
备策略与计费规则功能实体 PCRF ,用于根据所述 CCR-U消息重建会话, 并进行 PCC策略决策。
22、 根据权利要求 21所述的系统, 其特征在于,
所述 PCEF具体用于: 在确定需要会话更新后发送 CCR-U消息, 所述 CCR-U消息中包含用户信息和原有的 PCC规则, 所述原有的 PCC规则是主 PCRF在 IP连接访问网络 IP-CAN会话初始建立过程或 IP-CAN会话更新过 程中发送给所述 PCEF;
所述备 PCRF具体用于: 根据所述用户信息重建会话, 以及, 将所述原 有的 PCC规则确定为 PCC策略决策后得到的 PCC规则; 或者, 根据所述用 户信息和签约信息, 得到 PCC规则。
23、 根据权利要求 22所述的系统, 其特征在于, 当所述备 PCRF得到的 PCC规则与所述原有的 PCC规则不同时,所述备 PCRF还用于:向所述 PCEF 发送信用控制应答更新 CCA-U消息, 所述 CCA-U消息中包含所述新的 PCC 规则, 使得所述 PCEF根据所述新的 PCC规则进行计费和策略控制。
24、 根据权利要求 21所述的系统, 其特征在于,
所述 PCEF具体用于: 在确定需要会话更新后发送 CCR-U消息, 所述 CCR-U消息中包含用户信息;
所述备 PCRF具体用于: 根据所述用户消息重建会话, 以及, 根据所述 用户信息和签约信息,得到 PCC规则,根据配置信息得到会话恢复指示信息, 所述会话恢复指示信息用于指示所述 PCEF保持或修改原有承载和策略; 并 向所述 PCEF发送 CCA-U消息, 所述 CCA-U消息中包含所述会话恢复指示 信息。
25、 根据权利要求 24所述的系统, 其特征在于, 当所述会话恢复指示信 息用于指示所述 PCEF修改原有承载和策略时,所述 CCA-U消息中还包含所 述备 PCRF得到的 PCC规则, 所述 PCEF还用于: 接收到所述 CCA-U消息 后, 去激活所有的专有承载, 并用所述备 PCRF得到的 PCC规则替换缺省承 载上的原有 PCC规则。
PCT/CN2012/086034 2012-12-06 2012-12-06 会话恢复方法、设备及系统 WO2014086020A1 (zh)

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EP12889678.4A EP2922317A4 (en) 2012-12-06 2012-12-06 METHOD, DEVICE AND RECYCLING SYSTEM
CN201280002811.4A CN104041090B (zh) 2012-12-06 2012-12-06 会话恢复方法、设备及系统
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CN104041090B (zh) 2018-12-25
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US20150271275A1 (en) 2015-09-24
CN109450655A (zh) 2019-03-08
JP2016502356A (ja) 2016-01-21
EP2922317A4 (en) 2015-11-11
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