CN108307336B - Dynamic policy recovery method, PCRF and system - Google Patents
Dynamic policy recovery method, PCRF and system Download PDFInfo
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- CN108307336B CN108307336B CN201610853199.1A CN201610853199A CN108307336B CN 108307336 B CN108307336 B CN 108307336B CN 201610853199 A CN201610853199 A CN 201610853199A CN 108307336 B CN108307336 B CN 108307336B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/24—Accounting or billing
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0247—Traffic management, e.g. flow control or congestion control based on conditions of the access network or the infrastructure network
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Abstract
The invention discloses a dynamic policy recovery method, a PCRF and a system, and relates to the field of mobile communication. The method comprises the following steps: the PCRF receives a release message of the dynamic policy reported by the PCEF, wherein the release message comprises a release reason which is an unknown abnormal reason; the PCRF stores the information of the released dynamic policy, wherein the information of the dynamic policy comprises user identification information and a dynamic policy; the PCRF receives a message for recovering the terminal wireless access environment reported by the PCEF, wherein the recovery message comprises user identification information; and the PCRF searches the corresponding dynamic policy from the stored information of the dynamic policy according to the user identification information in the recovery message, and sends the searched dynamic policy to the PCEF for execution. Therefore, the network side automatically restores the dynamic strategy for the user, the user experience is improved, the platform/user side does not need to trigger the application process of the dynamic strategy again, and the signaling overhead is saved.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a dynamic policy recovery method, a PCRF and a system.
Background
PCC (policy and charging control) may implement flexible QoS (quality of service) policy control, charging, service data flow detection, etc.
In backward traffic management, OTT (Over The Top, providing various application services to users through The internet) can provide a QoS-guaranteed proprietary bearer for a specific service data flow based on a PCC dynamic policy.
Due to factors such as coverage dead zones and high-speed movement, the situation that 4G falls back to cdma 1x occurs, and the effective PCC dynamic strategy is released due to abnormal disconnection. For example, when the RAT (radio access technology) is changed from LTE (long term evolution) to cdma 1x, the release message of the QoS specific bearer may be notified to the platform/user side through the Gx/Rx interface, the application process that the platform/user side needs to trigger the dynamic policy again for continuing the service experience, and the release message, the application message, and the like caused by the handover add signaling overhead to the core network and the platform side.
Disclosure of Invention
In order to solve the above problem, the present invention provides a dynamic policy recovery method, including: a Policy and Charging Rule Function (PCRF) receives a release message of a dynamic policy reported by a Policy and Charging Enforcement Function (PCEF), wherein the release message comprises a release reason which is an unknown abnormal reason; the PCRF stores the information of the released dynamic policy, wherein the information of the dynamic policy comprises user identification information and a dynamic policy; the PCRF receives a message for recovering the terminal wireless access environment reported by the PCEF, wherein the recovery message comprises user identification information; and the PCRF searches the corresponding dynamic policy from the stored information of the dynamic policy according to the user identification information in the recovery message, and sends the searched dynamic policy to the PCEF for execution.
The information of the dynamic policy stored by the PCRF also comprises first address information used by the terminal before the release; the recovery message reported by the PCEF received by the PCRF also comprises second address information currently used by the terminal; and the PCRF updates the first address information in the stored information of the dynamic policy into second address information.
The method further comprises the following steps: and when the PCRF receives a release message or an attachment request of the dynamic policy actively initiated by the terminal, releasing the dynamic policy.
The unknown abnormal reason comprises that the terminal is changed from a fourth generation access environment to a third generation access environment or a second generation access environment; the terminal wireless access environment recovery comprises the terminal recovering to a fourth generation access environment from a third generation access environment or a second generation access environment.
The method further comprises the following steps: and the OTT server or the capability open platform applies for the dynamic policy for the user.
The invention provides a policy and charging rule function PCRF for dynamic policy recovery, which comprises the following steps: a release message receiving module, configured to receive a release message of a dynamic policy reported by a policy and charging enforcement function PCEF, where the release message includes a release reason, and the release reason is an unknown abnormal reason; the strategy information storage module is used for storing the information of the released dynamic strategy, wherein the information of the dynamic strategy comprises user identification information and the dynamic strategy; a recovery message obtaining module, configured to receive a message for recovering the terminal radio access environment reported by the PCEF, where the recovery message includes user identification information; and the strategy recovery module is used for searching the corresponding dynamic strategy from the stored information of the dynamic strategy according to the user identification information in the recovery message and sending the searched dynamic strategy to the PCEF for execution.
The information of the dynamic policy stored by the policy information storage module further includes first address information used by the terminal before the release; the recovery message reported by the PCEF received by the recovery message obtaining module further includes second address information currently used by the terminal; the policy recovery module is further configured to update first address information in the stored information of the dynamic policy to second address information.
The PCRF further includes: and the strategy release module is used for releasing the dynamic strategy when receiving a release message or an attachment request of the dynamic strategy actively initiated by the terminal.
The unknown abnormal reason comprises that the terminal is changed from a fourth generation access environment to a third generation access environment or a second generation access environment; the terminal wireless access environment recovery comprises the terminal recovering to a fourth generation access environment from a third generation access environment or a second generation access environment.
The invention also provides a dynamic strategy recovery system, which comprises: a policy and charging enforcement function PCEF and the aforementioned policy and charging rules function PCRF; the PCEF is used for reporting a release message of the dynamic policy and a message for recovering the terminal wireless access environment to the PCRF.
The system further comprises: and the OTT server or the capability open platform is used for applying the dynamic strategy for the user.
The method and the system enhance the PCRF, cache the abnormally released dynamic policy through the PCRF, automatically recover the dynamic policy for the user by the network side after the wireless environment becomes better, improve the user experience, do not need the platform/user side to trigger the application process of the dynamic policy again, and save the signaling overhead.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flowchart of an embodiment of a dynamic policy recovery method according to the present invention.
FIG. 2 is a flowchart of an embodiment of a dynamic policy recovery method according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of the dynamic policy recovery system of the present invention.
Fig. 4 and fig. 5 are schematic structural diagrams of the PCRF for dynamic policy recovery according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a method for triggering a dynamic policy by a platform/user side after a PCC dynamic policy is disconnected due to change of a wireless environment, and aims to solve the limitation of an application process that the platform/user side needs to trigger the dynamic policy again. The method and the system enhance the PCRF, cache the abnormally released dynamic policy through the PCRF, automatically recover the dynamic policy for the user by the network side after the wireless environment becomes better, improve the user experience, do not need the platform/user side to trigger the application process of the dynamic policy again, and save the signaling overhead.
FIG. 1 is a flowchart of an embodiment of a dynamic policy recovery method according to the present invention. As shown in fig. 1, the method of this embodiment includes:
s102, the OTT server or the capability open platform applies for the PCC dynamic strategy for the user. The terminal wireless access environment is the first access type at this time.
S104, in the service using process, the wireless access environment becomes poor, the terminal wireless access environment falls back from the first access type to the second access type, for example, the terminal changes from the fourth generation access environment to the third generation access environment or the second generation access environment, the PCRF (policy and charging rule function) receives a release message of the dynamic policy reported by the PCEF (policy and charging enforcement function), the release message includes a release reason, and the release reason is an unknown abnormal reason. The unknown cause of the abnormality may be, for example, a change in the wireless access environment of the terminal.
The "first access type" and the "second access type" in this embodiment are used to distinguish different access types, and are not used to indicate the meaning of size or timing.
S106, the PCRF stores the information of the released dynamic policy, wherein the information of the dynamic policy comprises the user identification information and the dynamic policy, and further comprises first address information used by the terminal before the release.
The subscriber identity information may be, for example, an IMSI (international mobile subscriber identity) or a mobile station ISDN (integrated services digital network) number. The dynamic policy includes information such as QoS, rate, etc. The address information of the terminal may be, for example, an IP address.
S108, the wireless access environment is changed to be good, the wireless access environment of the terminal is changed from the second access type to the first access type, for example, the terminal is recovered to be a fourth generation access environment from a third generation access environment or a second generation access environment, the PCRF receives a message for recovering the wireless access environment of the terminal reported by the PCEF, and the recovery message comprises user identification information. In addition, since the user address may change, the recovery message may further include second address information currently used by the terminal.
S110, PCRF according to the user identification information in the recovery message, searches the corresponding dynamic policy from the stored information of the dynamic policy, and sends the searched dynamic policy to PCEF for execution. If the user address changes, the PCRF further needs to update the first address information in the stored information of the dynamic policy to the second address information.
Therefore, the network side automatically restores the dynamic strategy for the user, the user experience is improved, the platform/user side does not need to trigger the application process of the dynamic strategy again, and the signaling overhead is saved.
The invention can actively initiate the dynamic strategy release process by the terminal, for example, the terminal actively initiates the release message or the attachment request of the dynamic strategy, and the PCRF releases the dynamic strategy when receiving the release message or the attachment request of the dynamic strategy actively initiated by the terminal.
FIG. 2 is a flowchart of an embodiment of a dynamic policy recovery method according to the present invention. As shown in fig. 2, the method of this embodiment includes:
s200, the user uses the service and requests a guarantee strategy from the OTT server through the terminal.
S201, the OTT server sends a QoS resource request message (applyqosresourcererequest) to the capability openness platform.
S202, the capability opening platform sends an AAR (authentication and authorization request) message to the PCRF, wherein the AAR message carries a dynamic policy.
S203, the PCRF sends an AAA (authentication authorization response) message to the capability openness platform.
S204, PCRF sends RAR (re-authorization request) message to PCEF, wherein the RAR message carries dynamic policy.
S205, the PCEF sends an RAA (re-authorization response) message to the PCRF. The PCEF then charges the user according to the dynamic policy.
S206, the capability openness platform sends a QoS resource response request message (ApplyQoSResourceResponse) to the OTT server.
At this time, the terminal radio access environment becomes poor, and the terminal falls back to cdma 1x from LTE, for example.
S207, the PCEF sends a CCR (credit control request) message to the PCRF, and reports a release dynamic policy, where the message may carry an unknown cause of the release (RAT-CHANGE).
S208, the PCRF sends a CCA (credit control response) message to the PCEF. The PCRF stores information of dynamic policies including, for example, IMSI, QoS policy, IP1 used by the terminal before release.
In this case, the terminal radio access environment is improved, and the terminal changes from cdma 1x to LTE, for example.
S209, the PCEF sends a CCR message to the PCRF, and reports the recovery of the wireless access environment of the terminal, wherein the message comprises the IMSI and the IP2 currently used by the terminal.
S210, the PCRF searches a corresponding dynamic policy (QoS policy) according to the IMSI, rebinding the dynamic policy, and updating the address information in the information of the dynamic policy to IP 2. And the PCRF sends the CCA message to the PCEF and sends the searched dynamic policy to the PCEF for execution.
Therefore, the network side automatically restores the dynamic strategy for the user, the user experience is improved, the platform/user side does not need to trigger the application process of the dynamic strategy again, and the signaling overhead is saved.
Fig. 3 is a schematic structural diagram of an embodiment of the dynamic policy recovery system of the present invention. As shown in fig. 3, the system includes a PCEF301, a PCRF302, and further may include a capability openness platform 303 or an OTT server 304.
The PCEF301 is configured to report a release message of the dynamic policy and a message of recovering the terminal radio access environment to the PCRF. The release reason is included in the release message, and is an unknown abnormal reason. The recovery message includes user identification information.
The PCRF302 is configured to receive a release message of the dynamic policy reported by the PCEF, store information of the released dynamic policy, where the information of the dynamic policy includes the user identifier information and the dynamic policy, receive a message for recovering the terminal radio access environment reported by the PCEF, search the corresponding dynamic policy from the stored information of the dynamic policy according to the user identifier information in the recovery message, and send the searched dynamic policy to the PCEF for execution. If the user address changes, the PCRF further needs to update the address information in the stored information of the dynamic policy to the address information carried in the recovery message.
The OTT server 304 or the capability opening platform 303 is configured to apply for the dynamic policy for the user.
Fig. 4 and fig. 5 are schematic structural diagrams of the PCRF for dynamic policy recovery according to the present invention. As shown in fig. 4, the PCRF302 includes:
a release message receiving module 401, configured to receive a release message of a dynamic policy reported by a policy and charging enforcement function PCEF, where the release message includes a release reason, and the release reason is an unknown abnormal reason;
a policy information saving module 402, configured to save information of the released dynamic policy, where the information of the dynamic policy includes user identification information and the dynamic policy;
a recovery message obtaining module 403, configured to receive a message for recovering the terminal radio access environment, where the message includes user identifier information, and the message is reported by a PCEF;
the policy recovery module 404 is configured to search a corresponding dynamic policy from the stored information of the dynamic policy according to the user identifier information in the recovery message, and send the searched dynamic policy to the PCEF for execution.
The unknown abnormal reason comprises that the terminal is changed from a fourth generation access environment to a third generation access environment or a second generation access environment; the terminal wireless access environment recovery comprises the terminal recovering to a fourth generation access environment from a third generation access environment or a second generation access environment.
The information of the dynamic policy stored by the policy information storage module also comprises first address information used by the terminal before the release; the recovery message reported by the PCEF received by the recovery message acquisition module also comprises second address information currently used by the terminal; the policy recovery module is further configured to update first address information in the stored information of the dynamic policy to second address information.
As shown in fig. 5, the PCRF further includes: the policy releasing module 405 is configured to release the dynamic policy when receiving a release message or an attach request of the dynamic policy actively initiated by the terminal.
The dynamic strategy which is released abnormally is cached through the PCRF, and after the wireless environment becomes good, the dynamic strategy is automatically recovered for the user by the network side, so that the user experience is improved, the application process of the dynamic strategy is not required to be triggered again by the platform/user side, and the signaling overhead is saved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. A dynamic policy recovery method, comprising:
a Policy and Charging Rules Function (PCRF) entity receives a release message of a dynamic policy reported by a Policy and Charging Enforcement Function (PCEF), wherein the release message comprises a release reason which is an unknown abnormal reason;
the PCRF stores the information of the dynamic policy released by the PCEF, wherein the information of the dynamic policy comprises user identification information and the dynamic policy;
the PCRF receives a message for recovering the terminal wireless access environment reported by the PCEF, wherein the recovery message comprises user identification information;
and the PCRF searches the corresponding dynamic policy from the stored information of the dynamic policy according to the user identification information in the recovery message, and sends the searched dynamic policy to the PCEF for execution.
2. The method of claim 1, wherein the information of the dynamic policy stored in the PCRF further includes first address information used by the terminal before the release;
the recovery message reported by the PCEF received by the PCRF also comprises second address information currently used by the terminal;
and the PCRF updates the first address information in the stored information of the dynamic policy into second address information.
3. The method of claim 1, further comprising:
and when the PCRF receives a release message or an attachment request of the dynamic policy actively initiated by the terminal, releasing the dynamic policy.
4. The method of claim 1, wherein the unknown cause of the anomaly comprises the terminal changing from a fourth generation access environment to a third generation access environment or a second generation access environment;
the terminal wireless access environment recovery comprises the terminal recovering to a fourth generation access environment from a third generation access environment or a second generation access environment.
5. The method of claim 1, further comprising:
and the OTT server or the capability open platform applies for the dynamic policy for the user.
6. A dynamic policy recovery policy and charging rules function, PCRF, comprising:
a release message receiving module, configured to receive a release message of a dynamic policy reported by a policy and charging enforcement function entity PCEF, where the release message includes a release reason, and the release reason is an unknown abnormal reason;
the policy information storage module is used for storing information of a dynamic policy released by the PCEF, wherein the information of the dynamic policy comprises user identification information and the dynamic policy;
a recovery message obtaining module, configured to receive a message for recovering the terminal radio access environment reported by the PCEF, where the recovery message includes user identification information;
and the strategy recovery module is used for searching the corresponding dynamic strategy from the stored information of the dynamic strategy according to the user identification information in the recovery message and sending the searched dynamic strategy to the PCEF for execution.
7. The PCRF of claim 6, wherein the information of the dynamic policy stored by the policy information storage module further includes first address information used by the terminal before release;
the recovery message reported by the PCEF received by the recovery message obtaining module further includes second address information currently used by the terminal;
the policy recovery module is further configured to update first address information in the stored information of the dynamic policy to second address information.
8. The PCRF of claim 6, further comprising:
and the strategy release module is used for releasing the dynamic strategy when receiving a release message or an attachment request of the dynamic strategy actively initiated by the terminal.
9. The PCRF of claim 6, wherein an unknown cause of the anomaly comprises the terminal changing from a fourth generation access environment to a third generation access environment or a second generation access environment;
the terminal wireless access environment recovery comprises the terminal recovering to a fourth generation access environment from a third generation access environment or a second generation access environment.
10. A dynamic policy recovery system, comprising: a policy and charging enforcement function, PCEF, and the policy and charging rules function, PCRF, of any of claims 6-9;
the PCEF is used for reporting a release message of the dynamic policy and a message for recovering the terminal wireless access environment to the PCRF.
11. The system of claim 10, further comprising:
and the OTT server or the capability open platform is used for applying the dynamic strategy for the user.
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| WO2016078090A1 (en) * | 2014-11-21 | 2016-05-26 | 华为技术有限公司 | Charging control device, method and system |
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