WO2011088702A1 - Procédé et système permettant de contrôler des ressources dans un réseau de convergence multiservice - Google Patents

Procédé et système permettant de contrôler des ressources dans un réseau de convergence multiservice Download PDF

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Publication number
WO2011088702A1
WO2011088702A1 PCT/CN2010/078871 CN2010078871W WO2011088702A1 WO 2011088702 A1 WO2011088702 A1 WO 2011088702A1 CN 2010078871 W CN2010078871 W CN 2010078871W WO 2011088702 A1 WO2011088702 A1 WO 2011088702A1
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WIPO (PCT)
Prior art keywords
service
policy
pcrf
pef
network
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PCT/CN2010/078871
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English (en)
Chinese (zh)
Inventor
芮通
孙默
吴锦花
周晓云
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中兴通讯股份有限公司
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Publication of WO2011088702A1 publication Critical patent/WO2011088702A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for controlling resources in a full service convergence network.
  • the Evolved Packet System (EPS) proposed by the 3GPP is evolved by the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and the Mobility (Mobility).
  • Management Entity MME
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • AAA 3GPP Certification Authentication, Authorization and Accounting
  • PCRF Policy and Charging Rules Function
  • the mobility management entity is responsible for the control planes such as mobility management, non-access stratum signaling processing, and user mobility management context management;
  • S-GW is the access gateway connected to E-UTRAN. The device forwards data between the E-UTRAN and the P-GW, and is responsible for buffering the paging waiting data;
  • the P-GW is a border gateway of the EPS and the Packet Data Network (PDN) network, and is responsible for the connection of the PDN.
  • Incoming and forwarding data between EPS and PDN; S-GW and P-GW are both core network gateways;
  • PCRF is a policy and charging rule function entity, through interface Rx and carrier network protocol (IP) service network Connected to obtain service information.
  • IP carrier network protocol
  • the EPS system supports interworking with non-3GPP systems, and is implemented through the S2a/S2b/S2c interface, where
  • the P-GW in the EPS system acts as an anchor between the 3GPP and the non-3GPP system.
  • the non-3GPP system is divided into trusted non-3GPP IP access and untrusted non-3GPP IP access.
  • ePDG evolved Evolved Packet Data Gateway
  • UE User Equipment
  • S2c can implement user plane related control and mobility support
  • the supported mobility management protocol supports the dual stack.
  • Mobile IPv6 Support for Dual Stack Hosts and Routers DSMIPv6
  • the PCRF communicates with other network elements through the following interfaces:
  • PCEF Policy and Charging Enforcement Function
  • the S-GW When the interface between the P-GW and the S-GW is based on the PMIIV6, the S-GW has the function of performing QoS control on the service data flow by the Bearer Binding and Event Report Function (BBERF) entity.
  • BBERF Bearer Binding and Event Report Function
  • the PCRF exchanges information with the S-GW through the Gxc interface.
  • the PCRF exchanges information with the trusted non-3GPP access gateway through the Gxa interface;
  • the visited PCRF and the home PCRF communicate through the S9 interface, and the PCRF obtains the service information for formulating the PCC policy from the application function (AF) of the service through the Rx interface.
  • AF application function
  • the corresponding PDN network can be found by Access Point Name (APN).
  • a connection from a UE to a PDN network is usually referred to as an IP Connectivity Access Network (IP-CAN) session.
  • IP-CAN IP Connectivity Access Network
  • the BBERF and the PCEF respectively establish a Diameter session with the PCRF, and through these Diameter sessions, the policy charging information for controlling the IP-CAN session and the service information for formulating the policy are transmitted.
  • PCC policy and charging control and execution with PCRF as the core
  • PCRF can dynamically send a PCC policy to the PCEF, which includes QoS and charging information.
  • the PCC policy is the service related information provided by the PCRF according to the AF, the bearer related information reported by the PCEF, and the subscription of the user in the SPR. Information is formulated.
  • the PCC system is shown in Figure 2:
  • the PCRF is responsible for the formulation of the policy and the charging rules.
  • the PCC policy and the charging rules are sent to the PCEF through the Gx interface.
  • the PCEF installs and executes the PCC policy, and reports related events, and exchanges accounting information with the charging system.
  • the BBERF receives the QoS rules of the service from the PCRF through the Gxx interface, and does not exchange accounting information with the charging system. It is only responsible for the bearer binding and reporting of related events.
  • the AF provides service information to the PCRF through the Rx interface
  • the Subscriber Profile Repository stores the service information subscribed by the user.
  • the PCRF can query the SPR for the service information subscribed by the user through the Sp interface.
  • PCEF sends online charging information to the online charging system through the Gy interface (Online Charging
  • OSC Offline Charging System
  • the AF initiates a policy control request to the PCRF based on the QoS negotiated by the service layer, the PCRF performs authorization according to the user subscription information (obtained from the SPR) and the operator policy, and generates a corresponding PCC policy, which is sent to the PCEF function in the GW.
  • the PCC policy includes the following information: a service flow quintuple, QoS information (such as QCI, uplink and downlink bandwidth, etc.), and charging information (such as Charging Key).
  • the UE and the GW establish a corresponding bearer according to the QoS of the service or modify the QoS attribute of the existing bearer, and perform bearer binding of the uplink service traffic on the UE side, that is, record which bearer the service flow should be transmitted from;
  • the bearer binding of the downlink traffic is performed, and the corresponding QoS priority label (such as DSCP) is used for the uplink traffic to ensure the QoS priority of the uplink traffic in the backbone network, and the service flow is compared according to the charging information in the PCC policy. Perform billing control.
  • the S-GW and the P-GW can communicate using either GTP or PMIP protocols.
  • GTP protocol the bearer is established between the UE and the P-GW. Therefore, only the PCEF needs to perform policy and charging control on the P-GW.
  • PMIP protocol the bearer is established in the UE and Between the S-GWs, it is necessary to perform bearer binding on the S-GW through the BBERF function, to ensure the QoS of the service flow between the S-GW and the UE, and to pass the PCEF function on the P-GW. Line QoS and charging control.
  • the Policy and Charging Control (PCC) system is located between the service control layer and the bearer layer of the network, and can provide QoS support and corresponding charging control for the service layer. An important operational support system for QoS assurance.
  • the PCC system was established for the wireless access method of the 3rd Generation Partnership Project (3GPP). For the entire network operator, the access mode of the user also includes the fixed network access. In the prior art, there is no method for uniformly controlling the charging of the fixed network and the mobile network based on the QoS policy, so that the service cannot be based on the QoS. Perform billing control.
  • 3GPP 3rd Generation Partnership Project
  • the invention provides a method and system for controlling resources in a full service convergence network, and implements unified QoS policy control for a fixed broadband network and a mobile network.
  • the present invention provides the following technical solutions:
  • a method of controlling resources in a full service convergence network including:
  • the policy and charging rule function (PCRF) performs admission control and policy decision, and sends the policy of the service to the policy execution function (PEF).
  • the PCRF may perform admission control by: determining whether there are sufficient resources available; accepting the service when it is determined that the available resources are sufficient; rejecting the service when determining that the available resources are insufficient.
  • the AF may send the information of the service to the PCRF under any of the following conditions: when the session is established; during the session, when the quality of service policy changes.
  • a change in the quality of service policy can mean: the subscriber's subscription information changes, and/or the carrier configuration changes.
  • the PCRF can send the policy of the service to the PEF after accepting the service.
  • the PEF may reside on a transport layer network element of the fixed network, and the transport layer network element may include one or more of the following network elements: a home gateway (CNG), an access node (AN), and a broadband network gateway (BNG). .
  • the policy of the service may include a quality of service (QoS) policy and/or a charging policy.
  • QoS quality of service
  • the PCRF can send the policy of the service to the PEF through the Gxx interface.
  • the present invention also provides a system for controlling resources in a full service convergence network, including PCRF, PEF, and AF, wherein the PCRF is configured to perform admission control and policy decision after receiving information from the AF service, and Transmitting the policy of the service to a policy enforcement function (PEF); the PEF is configured to receive the policy delivered by the PCRF and execute the policy;
  • PEF policy enforcement function
  • the AF is set to send information of the service to the PCRF.
  • the PCRF may include: a judging module, which may be configured to determine whether the available resources on the path through which the service flow passes is sufficient; and a processing module, which may be configured to accept the service when the judging module determines that the available resources are sufficient; The judging module rejects the service when it determines that the available resources are insufficient.
  • the AF can be set to send the information of the service to the PCRF under any of the following conditions: When the session is established; During the session, when the quality of service policy changes. A change in the quality of service policy can mean: the subscriber's subscription information changes, and/or the carrier configuration changes.
  • the PCRF can be set to send the policy of the service to the PEF after accepting the service.
  • the PEF may reside on a transport layer network element, which may include one or more of the following network elements: CNG, AN, and BNG.
  • the policy of the service may include a QoS policy and/or a charging policy.
  • the PCRF can send a service policy to the PEF through the Gxx interface.
  • the technical solution provided by the present invention ensures the QoS of the accepted service flow by performing admission control on the resource request in the fixed broadband network, and implements unified QoS policy control for the fixed broadband network and the mobile network, thereby achieving charging based on the service-based QoS.
  • the purpose of control is not limited to:
  • FIG. 1 is a schematic structural view of an EPS system in the prior art
  • 2 is a schematic structural diagram of a PCC system in the prior art
  • 3 is a schematic structural diagram of a fixed broadband network in the prior art
  • 4a is a schematic structural diagram of a PCC system provided by the present invention.
  • 4b is another schematic structural diagram of a PCC system provided by the present invention.
  • FIG. 5 is a schematic structural diagram of a full service convergence network provided by the present invention.
  • FIG. 6 is a flowchart of a method for admission control in a full service convergence network according to Embodiment 1;
  • FIG. 7 is a flowchart of a method for admission control in a full service convergence network according to Embodiment 2.
  • a broadband access network (such as DSL) in a fixed broadband network includes user terminals.
  • the UE such as PC, etc.
  • access node AN such as DSLAM
  • access server AS such as BRAS, BNG, etc.
  • the AN accesses the AS through a number of Ethernet switches that are converged.
  • the AS accesses the metropolitan area network and the metropolitan area network accesses the backbone network.
  • the AS is a key node for the operator to conduct services, and is connected to the authentication server (AAA or NASS) for sending the username and password of the accessed UE to the authentication server for authentication, and assigning an IP address to the UE.
  • AAA authentication server
  • the PCC system provided by the present invention has the following features:
  • the PCRF formulates policies based on the user subscription, the negotiation result of the service layer, and the carrier configuration. If the user accesses the broadband through the fixed network, the PCRF is also used to maintain the network topology and resource status for the service. Provide admission control based on network resource status, and determine the enforcement point of the policy, and distribute the policy to the corresponding execution point.
  • the PCRF can obtain the subscription information of the user through SPR.
  • the SPR can be deployed as the Front End (FE) of the User Data Convergence (UDC), or can be deployed separately (as shown in Figure 4a);
  • the user's subscription information can be obtained through NASS and/or AAA, where NASS and AAA can be deployed separately or together (as shown in Figure 4b).
  • the PEF (Policy Enforcement Function) entity resides on the transport layer NE and performs the policy delivered from the PCRF.
  • the fixed broadband network user terminal accesses the carrier network through a Customer Network Gateway (CNG), and is connected to an AN entity (such as a DSLAM, etc.).
  • CNG Customer Network Gateway
  • AN entity such as a DSLAM, etc.
  • BNG Broadband Network Gateway
  • the IP service server is usually deployed in the metro backbone network, as shown in Figure 1 for data flow routing.
  • the PCRF sends the policy to the fixed network transport layer network element, where the transport layer network element resides in the PEF entity.
  • the user data can also access the packet data network gateway through the AN entity, so as to access the IP service network provided by the operator.
  • the data flow route diagram 2 is shown.
  • the PCRF needs to send the corresponding policy to the packet data gateway.
  • the PCRF has the function of sensing and maintaining the topology and resource status of the fixed network, and provides admission control for the resource request of the service according to the network topology and resource status of the fixed network, and according to the service situation and the transport layer.
  • the actual capability of the network element sends a policy to the corresponding transport layer network element, where the transport layer network element can be at least one of CNG, AN, and BNG.
  • the PCRF sends a policy to the transport network element through the Gxx interface.
  • Step 601 Perform service negotiation between the UE and the service function AF, including determining a QoS parameter of the service flow.
  • Step 602 The AF initiates a policy control request to the PCRF according to the negotiated QoS parameter.
  • Step 603 The PCRF formulates a policy according to the service subscription information of the user, the policy of the operator, and the service control information in the request message sent by the AF, where the service is The subscription information is obtained from the SPR, where the policy includes a QoS policy and/or a charging policy;
  • Step 604 If the user accesses from the fixed network, the PCRF performs a resource availability check on the resource request, that is, determines whether there are enough available resources (such as bandwidth) on the path through which the service flow passes, and if so, accepts the user initiated Resource request, and step 605 is performed; if not, the resource request is rejected, and the process ends;
  • Step 605 The PCRF sends a policy to the transport layer network element, where the policy includes a QoS policy and
  • the PCRF sends a policy to the fixed network transport layer network element. If the user accesses the IP service server through the packet data network element, the PCRF sends the network element and the packet to the fixed network bearer layer. The data network element issues a policy.
  • Step 606 The transport layer network element executes the policy, and manages the service flow according to the policy content, including marking a QoS priority, limiting a bandwidth, and the like.
  • Step 701 During the session, the PCRF is internally or externally triggered (for example, the subscription information of the user changes; the configuration of the carrier changes), and the QoS policy of the user is modified.
  • Step 702 If the user is from the fixed network The access, the PCRF performs a resource availability check on the resource update, determines whether there is sufficient resources on the path through which the user's service flow passes to ensure the execution of the update, and if so, accepts the resource update request, and performs step 703; if not, The resource update request is rejected and the process ends.
  • Step 703 The PCRF sends an updated policy to the corresponding transport layer network element, where the policy includes a QoS policy and/or a charging policy.
  • Step 704 The transport layer network element performs an update policy, and manages the service flow according to the policy content, including marking a QoS priority, limiting a bandwidth, and the like.
  • the PCRF maintains a list of network topology and resource status.
  • the bandwidth of the paths al, a2, a3, and a4 is 10M, and the upstream and downstream bandwidths of the paths bl and b2 are 15M.
  • UE1 initiates a service that requires QoS guarantee to a server in the metropolitan area network.
  • the 10F uplink and downlink bandwidth is required.
  • the PCRF performs the resource availability check and accepts the resource request to allocate the path a1 to the UE1.
  • the topology and resource status maintained in the PCRF need to be updated, and the remaining upper and lower behaviors of the path a1 are 0M.
  • the remaining uplink and downlink bandwidth of the path bl is 5M.
  • the PCRF needs to deliver a QoS policy to other network elements.
  • the upstream traffic of the service flow is marked with a high priority QoS flag; and is sent to the egress router of the server in the metropolitan area network.
  • the downstream traffic of the traffic flow is marked with a high priority QoS.
  • the PCRF also needs to send the charging policy of UE1 to the AN point.
  • the PCRF determines that the available bandwidth on the path a2 is 10M according to the locally maintained network topology and resource status list. The remaining available bandwidth on the bl is only 5M, and there is not enough resources for the transmission of the UE2 service flow.
  • the PCRF rejects the resource request of the UE2, and ensures that the transmission of the admitted service flow (ie, the service flow of the UE1) is not affected.
  • the PCRF After detecting the release of the occupied bandwidth by the UE1, the PCRF updates the locally maintained network topology and the resource status list. After the update, the available bandwidth of the path bl is 15M, and the PCRF accepts the resource request of the UE2.
  • the present invention also provides a system for controlling resources in a full service convergence network, including PCRF, PEF, and AF, wherein the PCRF is configured to perform admission control and policy decision after receiving information from the AF service, and The policy of the service is sent to the policy enforcement function (PEF); the PEF is set to receive the policy delivered by the PCRF and executed; and the AF is set to send the information of the service to the PCRF.
  • PCRF policy enforcement function
  • the PCRF may include: a judging module, which may be configured to determine whether the available resources on the path through which the service flow passes is sufficient; and a processing module, which may be configured to: when the judging module determines that the available resources are sufficient, accept the service; When the judging module determines that the available resources are insufficient, the service is rejected.
  • the AF can be set to send the information of the service to the PCRF under any of the following conditions: When the session is established; During the session, when the quality of service policy changes. A change in the quality of service policy can mean: the subscriber's subscription information changes, and/or the carrier configuration changes.
  • the PCRF can be set to send the policy of the service to the PEF after accepting the service.
  • the PEF may reside on a transport layer network element, which may include one or more of the following network elements: CNG, AN, and BNG.
  • the policy of the service may include a QoS policy and/or a charging policy.
  • the PCRF can send a service policy to the PEF through the Gxx interface.
  • the technical solution provided by the present invention ensures the QoS of the service flow transmission by accepting the admission control of the resource request in the fixed broadband network, and realizes the unified QoS policy control of the fixed broadband network and the mobile network, thereby achieving the service-based QoS.
  • each functional unit in each embodiment of the present invention may be implemented in the form of hardware, or may be implemented in the form of a software functional module.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as separate products, may also be stored in a computer readable storage medium.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the present invention ensures admission of service flows by ensuring admission control of resource requests in a fixed broadband network, and implements unified QoS policy control for fixed broadband networks and mobile networks, thereby achieving service-based QoS.
  • the purpose of charging control is a simple operation of charging control.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un système permettant de contrôler des ressources dans un réseau de convergence multiservice, et le procédé inclut l'étape suivante : après avoir reçu des informations de service à partir d'une fonction d'application (AF), une fonction PCRF (fonction de règles de politique et de facturation) met en œuvre un contrôle d'admission et une décision de politique, et distribue la politique du service à une fonction PEF (fonction de mise en application de politique). Avec la présente invention, une qualité de service (QoS) des flux de service admis peut être garantie, et le contrôle de politique de QoS unifiée pour un réseau à large bande fixe et pour un réseau mobile peut être réalisé, de telle sorte que l'objectif d'un contrôle de facturation basé sur la qualité de service du service peut être atteint.
PCT/CN2010/078871 2010-01-25 2010-11-18 Procédé et système permettant de contrôler des ressources dans un réseau de convergence multiservice WO2011088702A1 (fr)

Applications Claiming Priority (2)

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CN201010102609.1 2010-01-25
CN2010101026091A CN102136983A (zh) 2010-01-25 2010-01-25 在全业务融合网络中控制资源的方法和系统

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CN103188646B (zh) * 2011-12-30 2017-12-12 中兴通讯股份有限公司 计费信息的提供方法、装置及系统
CN103686657B (zh) * 2012-09-11 2017-05-24 电信科学技术研究院 业务质量控制规则传递及更新方法和设备
CN104144378B (zh) * 2013-05-10 2018-02-02 中国电信股份有限公司 业务管理方法和系统、以及插件
WO2016197306A1 (fr) * 2015-06-08 2016-12-15 华为技术有限公司 Procédé et dispositif d'établissement de politique de chaîne de services
WO2018014740A1 (fr) * 2016-07-18 2018-01-25 中兴通讯股份有限公司 Procédé, appareil et système de commande de politiques
CN107634838A (zh) 2016-07-18 2018-01-26 中兴通讯股份有限公司 策略控制方法、装置及系统

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CN101378586A (zh) * 2007-08-27 2009-03-04 华为技术有限公司 一种业务数据流的策略控制方法、装置及系统
WO2009149341A2 (fr) * 2008-06-05 2009-12-10 Camiant, Inc. Procédé et système pour fournir une gestion de mobilité dans un réseau

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CN101378586A (zh) * 2007-08-27 2009-03-04 华为技术有限公司 一种业务数据流的策略控制方法、装置及系统
WO2009149341A2 (fr) * 2008-06-05 2009-12-10 Camiant, Inc. Procédé et système pour fournir une gestion de mobilité dans un réseau

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