WO2014166438A1 - Procédé, dispositif et système de contrôle de règle basé sur la régulation de l'encombrement - Google Patents

Procédé, dispositif et système de contrôle de règle basé sur la régulation de l'encombrement Download PDF

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Publication number
WO2014166438A1
WO2014166438A1 PCT/CN2014/075625 CN2014075625W WO2014166438A1 WO 2014166438 A1 WO2014166438 A1 WO 2014166438A1 CN 2014075625 W CN2014075625 W CN 2014075625W WO 2014166438 A1 WO2014166438 A1 WO 2014166438A1
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Prior art keywords
policy
congestion
pcef
execution condition
verification
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PCT/CN2014/075625
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English (en)
Chinese (zh)
Inventor
周晓云
吴锦花
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中兴通讯股份有限公司
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Publication of WO2014166438A1 publication Critical patent/WO2014166438A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H04L41/5022—Ensuring fulfilment of SLA by giving priorities, e.g. assigning classes of service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8027—Rating or billing plans; Tariff determination aspects based on network load situation
    • H—ELECTRICITY
    • 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
    • H04W28/0289—Congestion control
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a policy control method, apparatus, and system based on congestion control. Background technique
  • PCRF Policy and Charging Rules function
  • AF Application Function
  • SPR Subscription Profile Repository
  • PCRF Policy and Charging Rules Function
  • PCRF Policy and Charging Rules Function
  • the PCRF needs to combine the service information received from the Application Function (AF), the user subscription information received from the Subscription Profile Repository (SPR), and the policies configured by the operator.
  • the PCRF sends the control policy for the service to the Policy and Charging Enforcement Function (PCEF) or the Bearer Binding and Event Report Function (BBERF) for execution.
  • PCEF Policy and Charging Enforcement Function
  • BBERF Bearer Binding and Event Report Function
  • the PCRF can subscribe to the bearer layer related events to the PCEF and/or BBERF, so as to be aware of the event when the bearer layer occurs, and change the control strategy.
  • the PCEF is configured to execute a PCC rule delivered by the PCRF or preconfigured on the PCEF, and bind the PCC rule to the matching bearer.
  • the PCEF detects the IP packet transmitted on the network according to the quintuple information contained in the PCC rule. When the IP packet matches the quintuple of a certain rule, the IP packet is corresponding to the IP packet according to the rule. QoS and charging control. If the PCRF subscribes to the relevant bearer layer event to the PCEF, the PCEF needs to report the event to the PCRF in time after the event occurs.
  • PMIP Proxy Mobility Internet Protocol
  • DSMIP Dual Stack Mobility Internet Protocol
  • the BBERF mainly receives the QoS rules delivered by the PCRF, and binds the QoS rules to the matching bearers.
  • the BBERF detects the IP packet transmitted on the network according to the quintuple information included in the rule. When the IP packet matches the quintuple, the QoS control policy defined by the rule is executed on the IP packet. If the PCRF subscribes to the relevant bearer layer event to the BBERF, the BBERF needs to report the event to the PCRF in time after the event occurs.
  • the AF is used to provide the service information required to develop a control policy for the service, such as the Internet Protocol (IP) address, port number used by the service, and the bandwidth and QoS required for the service to be carried out.
  • IP Internet Protocol
  • SPR is used to save user subscription information and provide necessary user subscription information for PCF rules for PCRF.
  • OCS Online Charging System
  • OFCS Offline Charging System
  • the PCRF interacts with PCEF and BBERF through the Gx and Gxa interfaces respectively.
  • the principle of the PCC architecture to implement policy control on the services carried on the bearer network is as follows: First, the PCRF needs to establish a gateway control session and an IP connectivity access network between the BBERF and the PCEF before the user officially conducts specific services (IP-Connectivity Access Network). , IP-CAN) session, and establish a gateway control session and IP-CAN session association to ensure consistency of control policies on BBERF and PCEF for specific traffic data flows.
  • IP-Connectivity Access Network IP-Connectivity Access Network
  • the PCRF formulates a corresponding policy for the service data flow included in the service according to the application layer negotiation service information, the user subscription information, the operator policy, and the like, and includes the information of the quintuple information and the authorized bandwidth of the identifier flow. .
  • the PCRF also sends the policy to the BBERF in the form of a QoS rule, and sends the policy to the PCEF in the form of a PCC rule.
  • the IP packet arrives at the PCEF or BBERF, the IP packet is matched according to the quintuple information in the rule, and the packet is matched.
  • the IP packets are transmitted using the corresponding bearers and corresponding billing is performed to implement effective control of services.
  • the network resources occupied by the service can be released in real time through the PCC, and the dynamic QoS control of the service is achieved. purpose.
  • the operator When the network is in a congested state, the operator must adopt a strategy to reduce the network status. For example, for some non-real-time, low-value services, the operator may consider denying certain services or reducing QoS.
  • a push service such a service is actively sent to the user terminal by the service provider, or is periodically pushed to the user by the service provider after the user subscribes to the service.
  • service providers can push such services to users in the form of text messages, videos or multimedia multimedia messages.
  • the time for such services is controlled by the operator, for example, can be sent at a certain point in time. However, if the network is overloaded or congestion occurs at this point in time, then such service delays can be sent to the user.
  • the PCRF After the PCRF senses the congestion of the network (the congestion of the wireless air interface), the PCRF can reject the service or perform QoS adjustment on the ongoing service. However, the premise of this mechanism is that the PCRF must perceive the congestion of the network, which inevitably brings additional overhead when the PCEF is congested to the PCRF.
  • PCEF senses network congestion and pre-configured policies initiate corresponding congestion mitigation strategies. This scheme will cause the PCEF and PCRF status to be inconsistent. The policy decision for the PCRF will be inconsistent with the PCEF policy implementation, and billing will cause errors. Summary of the invention
  • the embodiments of the present invention mainly provide a policy control method, apparatus, and system based on congestion control.
  • a policy control method based on congestion control comprising:
  • the policy and charging rule function PCRF When the policy and charging rule function PCRF provides a policy to the policy and charging execution function PCEF, indicating a congestion execution condition of the policy; the PCEF performs a policy check on the policy according to the congestion execution condition and the perceived congestion information. .
  • a policy control device based on congestion control the device is a PCRF, and the PCRF includes: a policy providing module, an indication module;
  • a policy providing module configured to provide a policy to the PCEF
  • an indication module configured to indicate a congestion execution condition of the policy when the policy providing module provides a policy to the PCEF.
  • a policy control device based on congestion control the device is a PCEF, and the PCEF includes: a sensing module and a verification module;
  • a sensing module configured to sense congestion information
  • the verification module is configured to perform policy verification on the policy according to the perceived congestion information and the received congestion execution condition.
  • a policy control system based on congestion control includes a PCRF, a PCEF, wherein the PCRF is configured to indicate a congestion execution condition of the policy when a policy is provided to the PCEF;
  • the PCEF is configured to perform, according to the congestion execution condition and the perceived congestion information
  • the policy performs policy verification.
  • the policy control technology based on the congestion control in the embodiment of the present invention enables the PCEF to determine whether to perform the policy delivered by the PCRF according to the current congestion condition, thereby reducing network congestion and ensuring user experience.
  • FIG. 1 is a diagram of a prior art PCC architecture
  • FIG. 2 is a flowchart of policy control based on congestion control according to an embodiment of the present invention
  • FIG. 3 is a flowchart of policy control based on congestion control according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of a policy control flow based on congestion control according to Embodiment 2 of the present invention
  • FIG. 5 is a congestion control system according to an embodiment of the present invention. Schematic diagram of the PCRF structure controlled by the strategy;
  • FIG. 6 is a schematic structural diagram of a PCEF structure of a policy control based on congestion control according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a policy control system based on congestion control according to an embodiment of the present invention. detailed description
  • Step 210 When the PCRF provides a policy to the PCEF, indicating a congestion execution condition of the policy;
  • Step 220 The PCEF performs policy verification on the policy according to the congestion execution condition and the perceived congestion information.
  • the PCEF may feed back the policy failure notification to the PCRF, and the PCRF further reports the policy failure notification to the AF.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • This embodiment describes the process of policy control performed by the PCC according to the congestion of the network in the scenario where the BBERF does not exist.
  • the process includes the following steps:
  • Step 301 A user equipment (UE) is attached to the network, and an attach procedure is initiated, or the UE initiates another PDN connection establishment process.
  • UE user equipment
  • Step 302 After receiving the attach request or the PDN connection establishment request, the PCEF initiates an IP-CAN session establishment request to the PCRF, and provides the PCRF with a user identifier, a PDN identifier, an IP address, and the like.
  • Step 303 if there is no defined user subscription information, The PCRF obtains user subscription information from the SPR, such as user level, bandwidth allocated to the user, and information such as services allowed to be accessed by the user.
  • Step 304 The PCRF returns a response to the PCEF that the IP-CAN session is successfully established.
  • Step 305 The PCEF perceives the congestion of the network element involved in the UE or the PDN connection, for example, the congestion of the wireless user plane, specifically, the air interface user plane congestion, the wireless base station congestion, and the wireless backhaul congestion.
  • the specific sensing method can be:
  • Control plane The radio base station (BTS/NodeB/eNodeB) sends the RAN user plane congestion information to the Gateway GPRS Support Node (GGSN)/packet data through the control plane message.
  • GGSN Gateway GPRS Support Node
  • P-GW Network Gateway
  • the radio base station (BTS/NodeB/eNodeB) transmits congestion information to the GGSN/P-GW by marking the congestion information on the uplink user plane packet header.
  • the congestion information includes at least congestion occurrence, congestion cancellation, and the like.
  • the level of congestion for example, mild, moderate, and severe
  • the congestion information can also indicate uplink congestion, downlink congestion, or uplink and downlink congestion.
  • the PCEF can also sense the related core network element congestion, and the above user plane and control plane methods can also be used.
  • Step 306 The UE interacts with the application server to perform service access.
  • the AF provides the corresponding business information to the PCRF.
  • Step 307 The PCRF makes a policy decision according to the service information, and formulates a PCC rule. If the service is a low-priority, non-real-time service or a service that other operators consider to be required to perform congestion control, the policy delivered by the PCRF indicates the congestion execution condition of the policy. If the PCEF can detect congestion or congestion, the policy sent by the PCRF indicates that the policy is not executed in the case of congestion or is not congested. If the PCEF can perceive different congestion levels, the policy issued by the PCRF indicates which congestion level and above or at what congestion level or higher, and does not execute the policy (or indicates the congestion level and the following). The policy is executed under or under what congestion level).
  • the content indicated when the foregoing indication is performed is a congestion execution condition
  • the congestion execution condition may be included in the corresponding PCC rule, indicating that the congestion execution condition is applied only to the PCC rule; or may be included in a parameter of installing the PCC rule, This congestion execution condition is applied to all PCC rules under this parameter.
  • Step 308 The PCRF sends the authorized policy (which may include a PCC rule) to the PCEF.
  • the policy check fails, and the PCEF confirms that the PCC rule is not executed. Otherwise, the policy verification is successful, PCEF confirms Execute the PCC rules. If the policy delivered by the PCRF does not include the congestion execution condition of the policy, the PCEF does not perform the policy check based on the current congestion condition.
  • Step 310 The PCEF returns a policy providing response to the PCRF. If the verification in step 309 is successful, the success indication is returned; if the verification in step 309 is incorrect, an error indication is returned, and the reason value of the network congestion is carried, and the level of congestion may be carried.
  • Step 311 If, in step 310, the PCRF receives the verification failure indication reported by the PCEF, the PCRF sends a bearer event report message to the AF, and notifies the AF policy verification failure or the resource allocation failure, and carries the cause value of the network congestion. It is also possible to carry a level of congestion, etc., and the process ends.
  • Step 312 If the policy verification is successful in step 309, the PCEF executes the policy.
  • This embodiment describes the process of policy control performed by the PCC according to the congestion of the network in the scenario where the BBERF exists.
  • the process includes the following steps:
  • Step 401 The UE attaches to the network, initiates an attach procedure, or the UE initiates another PDN connection establishment process.
  • Step 402 In step 401, after receiving the attach request or the PDN connection establishment request, the BBERF initiates a gateway control session establishment request to the PCRF, and provides the PCRF with information such as a user identifier, a PDN identifier, and an IP address.
  • Step 403 If there is no user subscription information, the PCRF obtains the user subscription information from the SPR, such as the user level, the bandwidth allocated to the user, the service that the user is allowed to access, and the step 404, the PCRF performs the policy decision, and returns to the BBERF.
  • the gateway controls the session establishment request message, which carries the QoS rules and the like.
  • Step 405 In the process of step 401, after receiving the attach request or the PDN connection establishment request, the PCEF initiates an IP-CAN session establishment request to the PCRF, and provides the user identifier and PDN to the PCRF. Information such as identification, IP address, etc.
  • the PCRF associates the gateway control session with an IP-CAN session (Gx session);
  • Step 406 The PCRF returns a response to the PCEF that the IP-CAN session is successfully established, and carries the PCC rule.
  • Step 407 The PCEF perceives the congestion of the network element involved in the UE or the PDN connection, for example, the congestion of the wireless user plane, specifically, the congestion of the air interface user plane, the congestion of the wireless base station, and the congestion of the wireless backhaul.
  • the specific sensing method can be:
  • Control plane i.e. a radio base station (BTS / NodeB / eNodeB) through a control plane message to the user plane radio congestion information (RAN user plane congestion information) sent to the GGSN / P-GW 0
  • the radio base station (BTS/NodeB/eNodeB) marks the congestion information through the uplink user plane packet header and sends it to the GGSN/P-GW.
  • the congestion information includes at least congestion occurrence, congestion cancellation, etc., of course, the level of congestion (e.g., mild, moderate, and severe) may be further refined.
  • congestion information can also indicate uplink congestion, downlink congestion, or uplink and downlink congestion.
  • the PCEF can also sense the related core network element congestion, and the above user plane and control plane methods can also be used.
  • Step 408 The UE interacts with the application server to perform service access.
  • the AF provides the corresponding business information to the PCRF.
  • Step 409 The PCRF performs policy decision according to the service information, formulates a PCC rule, and formulates a corresponding QoS rule. If the service is a low-priority, non-real-time service or a service that other operators consider to be required to perform congestion control, the policy delivered by the PCRF indicates the congestion execution condition of the policy. If the PCEF can detect the congestion or the congestion is removed, the policy sent by the PCRF indicates that the policy is not executed in the case of congestion or is performed without congestion. If the PCEF can sense different levels of congestion, the policy issued by the PCRF indicates the level of congestion and the above or The policy is not enforced under any congestion level (or indicates which congestion level and under the following conditions or under which congestion level).
  • the content indicated when the foregoing indication is performed is a congestion execution condition
  • the congestion execution condition may be included in the corresponding PCC rule, indicating that the congestion execution condition is applied only to the PCC rule; or may be included in a parameter of installing the PCC rule, This congestion execution condition is applied to all PCC rules under this parameter.
  • Step 410 The PCRF sends the authorized policy (which may include a PCC rule) to the PCEF.
  • the policy check fails, and the PCEF confirms that the PCC rule is not executed. Otherwise, the policy check is successful and the PCEF confirms that the PCC rule is executed. If the policy delivered by the PCRF does not contain the congestion enforcement condition of the policy, the PCEF does not perform the policy check based on the current congestion condition.
  • Step 412 The PCEF returns a policy to the PCRF to provide a response. If the verification in step 411 is successful, the success indication is returned. If the verification in step 411 is incorrect, an error indication is returned, and the cause value of the network congestion is carried, and the level of congestion may be carried.
  • Step 413 If, in step 412, the PCRF receives the verification failure indication reported by the PCEF, the PCRF sends a bearer event report message to the AF, and notifies the AF policy verification failure or the resource allocation failure, and carries the cause value of the network congestion. It is also possible to carry a level of congestion, etc., and the process ends.
  • Step 414 If the policy verification is successful in step 409, the PCEF executes the policy.
  • Step 415 If the PCRF receives the verification success indication reported by the PCEF in step 413, the PCRF provides the QoS rule to the BBERF.
  • Step 416 The BBERF executes the QoS rule.
  • Step 417 The BBERF returns a response message to the PCRF.
  • the embodiment of the present invention further implements a PCRF.
  • the PCRF includes: a policy providing module 51, an indication module 52, where
  • the policy providing module 51 provides a policy to the PCEF, and the instructing module 52 indicates a congestion execution condition of the policy when the policy providing module provides a policy to the PCEF.
  • the policy providing module 51 can be implemented by statistical analysis of the memory of the PCRF, and the indicating module 52 can be implemented by a processor of the PCRF.
  • the indication is not executed under the specified congestion level and above or above the specified congestion level; or the policy is executed under the specified congestion level and below or under the specified congestion level.
  • the congestion execution condition is included in the PCC rule, indicating that the congestion execution condition should be configured only as the PCC rule; or the congestion execution condition is included in the parameter of installing the PCC rule, indicating that the congestion execution condition should be configured as the parameter All PCC rules under.
  • the indication module 52 may further receive a policy check result indication from the PCEF, and return a policy check failure or resource allocation failure to the AF when the policy check result indication indicates that the check fails.
  • the embodiment of the present invention also implements a PCEF.
  • the PCEF includes: a sensing module 61 and a verification module 62.
  • the sensing module 61 senses congestion information, and the verification module 62 according to the perceived congestion information. And the received congestion execution condition performs a policy check on the policy.
  • the sensing module 61 can be implemented by a memory and an information collection interface of the PCEF.
  • the verification module 62 can be implemented by a processor of the PCEF.
  • the verification module 62 is configured to:
  • the sensing is currently in a congested state, and the congestion execution condition is that the policy is not executed in the case of congestion, the policy verification fails; or,
  • the policy check fails; or,
  • the policy insurance fails.
  • the verification module 62 is further configured to return a policy check result indication to the PCRF, and if the policy check succeeds, return a success indication; if the policy check fails, return a failure indication, and carry a cause value indicating network congestion .
  • the embodiment of the present invention implements a policy control system based on congestion control.
  • the system includes a PCRF 71 and a PCEF 72.
  • the PCRF 71 provides a policy to the PCEF 72. And indicating a congestion execution condition of the policy; the PCEF 72 performs a policy check on the policy according to the congestion execution condition and the perceived congestion information.
  • the PCEF can determine whether to execute the policy delivered by the PCRF according to the current congestion condition, thereby reducing network congestion and ensuring user experience. the goal of.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé, un dispositif et un système de commande de règle basé sur la régulation d'encombrement. Le procédé comprend : lors de la fourniture d'une règle pour une PCEF, l'indication par une PCRF d'une condition d'exécution d'encombrement de la règle; et, en fonction des informations d'encombrement perçues et de la condition d'exécution d'encombrement, l'exécution d'un contrôle de règle par la PCEF. La technologie de contrôle de règle basé sur la régulation d'encombrement dans les modes de réalisation de la présente invention permet à une PCEF de déterminer s'il faut exécuter une règle émise par la PCRF ou non, conformément à la situation d'encombrement courante, ce qui permet de réduire l'encombrement du réseau et d'assurer une expérience utilisateur satisfaisante.
PCT/CN2014/075625 2013-07-02 2014-04-17 Procédé, dispositif et système de contrôle de règle basé sur la régulation de l'encombrement WO2014166438A1 (fr)

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CN102907042A (zh) * 2009-12-31 2013-01-30 泰克莱克股份有限公司 针对状况触发的策略的方法、系统和计算机可读介质
WO2011160660A1 (fr) * 2010-06-25 2011-12-29 Telefonaktiebolaget L M Ericsson (Publ) Technique d'introduction d'un état de congestion en temps réel dans une décision de politique pour un réseau cellulaire
CN102232303A (zh) * 2010-08-31 2011-11-02 华为技术有限公司 位置订阅方法及装置
US20120257499A1 (en) * 2010-12-17 2012-10-11 Chatterjee Amit H Policy and charging rules function (pcrf) and performance intelligence center (pic) based congestion control
CN102075898A (zh) * 2010-12-21 2011-05-25 华为技术有限公司 业务控制方法、装置及系统
WO2012131424A1 (fr) * 2011-02-25 2012-10-04 Telefonaktiebolaget L M Ericsson (Publ) Procédé pour introduire des prédictions de congestion de réseau dans une décision de politique
CN102594578A (zh) * 2012-03-19 2012-07-18 中国联合网络通信集团有限公司 信息推送业务的处理方法、装置和系统

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