WO2008043278A1 - Système et procédé de commande d'admission de ressources - Google Patents

Système et procédé de commande d'admission de ressources Download PDF

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Publication number
WO2008043278A1
WO2008043278A1 PCT/CN2007/002907 CN2007002907W WO2008043278A1 WO 2008043278 A1 WO2008043278 A1 WO 2008043278A1 CN 2007002907 W CN2007002907 W CN 2007002907W WO 2008043278 A1 WO2008043278 A1 WO 2008043278A1
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WO
WIPO (PCT)
Prior art keywords
unit
control
service
access network
policy
Prior art date
Application number
PCT/CN2007/002907
Other languages
English (en)
French (fr)
Inventor
Bo Liu
Lili Xue
Ting Zou
Zhenzhu Lv
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to DK07816521.4T priority Critical patent/DK2075978T3/da
Priority to EP07816521A priority patent/EP2075978B1/en
Priority to AT07816521T priority patent/ATE521164T1/de
Publication of WO2008043278A1 publication Critical patent/WO2008043278A1/zh
Priority to US12/421,946 priority patent/US8477607B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/824Applicable to portable or mobile terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/72Admission control; Resource allocation using reservation actions during connection setup
    • H04L47/724Admission control; Resource allocation using reservation actions during connection setup at intermediate nodes, e.g. resource reservation protocol [RSVP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/78Architectures of resource allocation
    • H04L47/782Hierarchical allocation of resources, e.g. involving a hierarchy of local and centralised entities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/80Actions related to the user profile or the type of traffic

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource admission control system and method. Background technique
  • the resource and admission control subsystem proposed by ETSI TISPAN belongs to the bearer control layer, which implements policy control, resource reservation, admission control, and access, aggregation, network address port/protocol translation in the core network, and resource and admission control subsystem framework. As shown in Figure 1, where:
  • RACS is a resource and admission control sub-system, including SPDF (service-based policy decision function) unit and A-RACF (access resource and admission control function, access -resource and admission control function unit, AF (application function) unit, NASS (network attachment sub-system), AN (access node, access node), RCEF (resource control execution function, Resource control enforcement function ) A unit, BGF (border gateway function, border gatewaymputation ) unit, etc.
  • RACS is a subsystem for implementing policy control, resource reservation, and admission control in NGN.
  • RACS also supports NAT control in BGF.
  • the RACS provides a policy-based transport control service to the application layer.
  • the application layer implements admission control, application, and reservation of bearer resources within its jurisdiction through RACS.
  • SPDF uses the information from the request from the AF to calculate the appropriate authorization (for example, to calculate the number of media parts that need to be authorized);
  • these services include on/off gating, marking packets, by flow Provisioning resources, NAT, managed NAT traversal, setting up uplink and downlink business policies, business measurement, etc.; - hiding the internal details of RACS from AF;
  • A-RACF The features of A-RACF include:
  • PCC policy and charging control
  • the functions related to policy control in PCC include:
  • Gate,, function the ability to allow or prohibit the passage of packets of a service data flows (SDF). Whether or not the charging control and policy control functions have been applied, The "gating" function is applied to the session.
  • Session event This ability can trigger new user plane behavior for notification and responsiveness of application layer events.
  • the Session event function In order to apply the gating function, the Session event function must be available. For example, in the gating function, the Session termination event triggers the corresponding packet barring behavior.
  • QoS (Quality of Service) authorization function Authorization QoS refers to the maximum QoS authorization for certain IP flows. When there are multiple IP flows in a bearer, the authorized QoS for these flows is combined to serve as the bearer's authorized QoS. Specific QoS authorization operations (including acceptance, rejection, or modification) can be assisted by using QoS-related subscription information.
  • the QoS enforcement function of PCC (policy and charging control) must be consistent with the function of PEP in SBLP (service based local policy).
  • the QoS enforcement function includes degrading the requested bearer QoS by the GW (gateway, gateway) when the bearer is established.
  • the PCRP policy and charging rules function
  • the GW provides authorization QoS information and passes it on for execution.
  • Billing related features include:
  • Charging association Supports charging association between application layer charging and bearer layer charging.
  • the charging rules in the new PCC may be dynamically provided by the PCR or may be pre-configured in the GW.
  • AAR Authorization Authentication Request, AA-Request
  • AAA Authorization Authentication Response, AAA AA-Answer
  • RAR Re-authentication Request, re-authentication and/or re-authorization Request /RAA
  • the AAR message format is defined as (ETSI TS 183 017):
  • Binding-Information (binding information)
  • the interface between the PCRF and the AF is called the Rx interface.
  • the message types on the interface are: AAR/AAA, RAR/RAA, STR/STA, ASR/ASA.
  • AAR/AAA the interface between the PCRF and the AF
  • RAR/RAA the interface between the PCRF and the AF
  • STR/STA the interface between the PCRF and the AF
  • ASR/ASA the interface between the PCRF and the AF.
  • the format of the message of the R interface is defined as (3GPP TS 29.214):
  • ⁇ AA-Request>:: ⁇ Diameter Header: 265, REQ, PXY >
  • An embodiment of the present invention provides a resource admission control system and method for solving the problem of complicated networking and maintenance caused by using two sets of control layer entities in the prior art.
  • a resource admission control system comprising:
  • the application function unit interface unit is configured to receive a service request sent by the application function unit;
  • the policy decision function unit is configured to: after identifying the access network type according to the service request received by the application function unit interface unit, select a corresponding service logic to perform resource admission and control according to the identified access network type.
  • a resource admission control method includes:
  • the policy decision function unit receives the service request sent by the application function unit;
  • the policy decision function unit identifies the access network type according to the service request, and selects a corresponding service logic to perform resource admission and control according to the access network type.
  • the policy decision function unit xPDF identifies the access network type, and selects the corresponding The business logic for resource admission and control, xPDF hides the details of the access network from AF, simplifies the networking scheme, and makes system maintenance easy.
  • FIG. 1 is a schematic structural diagram of a resource and admission control subsystem and a related network environment based on a fixed network access type in the prior art
  • FIG. 2 is a schematic structural diagram of a resource and admission control subsystem based on a mobile network access type and a related network environment in the prior art
  • FIG. 3 is a schematic diagram of a connection of a resource admission control system in a network according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an xPDF according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a further refinement structure of an xPDF according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a service control function unit in an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a process of establishing a session initiated by an AF in a PCR
  • Figure 9 is a schematic diagram of a resource request flow initiated by AF in SPDF
  • FIG. 10 is a schematic diagram of a resource request process initiated by an AF in a scheme xPDF according to an embodiment of the present invention. detailed description
  • the bearer control layer provides a unified interface to the application layer, shields the difference between different access modes to the application function, and shields different control modes for various access modes, and shields the fixed access solution from the mobile access solution in resource control and admission control. , billing differences, and can be compatible with previous resource control and admission control methods. This solves the problem of complex networking and maintenance caused by the deployment of two sets of bearer control functions in the existing FMC application.
  • FIG. 3 it is a schematic diagram of a system architecture when the solution of the embodiment of the present invention is applied.
  • the solution combines SPDF and PCRF, and the fused resource admission control system provides a resource control interface to the application layer function through a unified Rx+ interface.
  • the policy decision function unit for implementing the SPDF and PRCF functions is represented by xPDF.
  • the interface with the service layer AF is Rx+, and the Rx+ uses the diameter protocol.
  • the AAR message of the Rx+ interface is defined as follows:
  • Binding-Information (binding information)
  • the Session-Id information of messages belonging to the same session is the same.
  • the embodiment of the present invention needs that xPDF can identify whether to select a fixed access network or a mobile access network from the first message-AAR message that establishes a session, and the subsequent xPDF can correctly select the SPDF according to the Session-Id information in the subsequent message.
  • the PCRF process implements resource reservation, admission control, and policy control. Therefore, except for AAR messages, other messages on the Rx+ interface, AAA, RAR/RAA, STR/STA, ASR/ASA reservation, and Gq' and Rx interfaces are not defined. change. It is used to identify and identify the type of access network. It is defined as follows.
  • the value can be defined as 0;
  • the value can be defined as 1;
  • WLA fixed access network the value can be defined as 2;
  • the value can be defined as 3;
  • WiMAX fixed access network the value can be defined as 4.
  • WiMAX mobile access network the value can be defined as 5.
  • Access-Id attribute value can be defined by extending the enumeration value, and the purpose of adding the Access-Id attribute value to Rx+ is that xPDF can recognize this time according to the assignment of the Access-W field at the beginning of each session. Whether the service is to control a fixed access network or a mobile access network.
  • the Tran-Control-Mode field may also be defined as an enumerated type of AVP (the AVP type code can be allocated).
  • the Tran-Control-Mode field is used to indicate the bearer control mode, and the bearer control mode is used to indicate which way xPDF performs bearer control, such as push mode or pull mode, on-path mode or off- Path mode.
  • the attribute values of the User-Name field, the Subscription-ID field, and the Globally-Unique-Address field in the AAR can also be used to identify the access network type.
  • the value range and access of the above fields can be utilized. The correspondence of the network types to identify the access network type. If the User-Name attribute value, the Subscription-ID attribute value, or the field Globally-Unique-Address attribute value can identify different access network types, the value range of the above field and the access network type pair are The relationship should be organized into the following form:
  • the first column of the table 1 is a specific assignment of the corresponding field, and the second column is the access network type corresponding to the specific assignment.
  • xPDF uses the specific values of the above fields in the AAR message on the Rx+ interface to check the above table. If the access network type is found, it may decide to use the corresponding method for access network resource control.
  • the implementation mainly includes a service control function unit 401, a policy and resource management function unit 402, and a protocol processing function unit 403.
  • the service control function unit 401 After the service control function unit 401 receives the message from the AF, the service control function unit 401 first checks whether it is an AAR message, and checks whether the access-id attribute is included in the message of the AAR message. If included, the service control function unit 401 can determine the access-id according to the access-id. The type of network access, so that the corresponding business logic is selected for resource and admission control.
  • User-Name, Subscription-ID Globally-Unique-Address attribute value, if included, according to the configuration data lookup table 1, get the corresponding access network type, and select the corresponding business logic for resource and admission control. If the access network type cannot be found, it is processed according to the default control mode, and then processed in the default control mode, including returning an error message to the AF.
  • xPDF also performs resource and admission control according to the bearer control mode corresponding to the content of the field.
  • the policy and resource management function unit 402 provides policy and resource information to the service control function unit 401.
  • the service control function unit 401 As shown in FIG. 5, it is a further refinement structure of the xPDF. It can be seen that the foregoing protocol processing function unit 403 further includes the following contents:
  • Diameter protocol new generation AAA protocol
  • adaptation unit 4031 for processing the Diameter protocol
  • the COPS (Common Open Policy Service) protocol interface and the adaptation unit 4032 are used to process the COPS protocol;
  • H.248 protocol interface and adaptation unit 4033 for processing the H.248 protocol
  • the SOAP (Simple Object Access Protocol) protocol interface and adaptation unit 4034 is configured to process the SOAP protocol.
  • the service control function unit 401 further includes:
  • the status is managed by the status management unit 4013.
  • the service control function unit 401 may further include:
  • a service logic storage unit 4012 configured to store service logic
  • a status management unit 4013 configured to manage a service status
  • the service selection and control unit 4014 selects and controls the service request according to the policy and resource information provided by the policy and resource management function unit.
  • the foregoing service logic storage unit 4012 further includes:
  • PCRF service logic storage unit 40121 configured to store PCRF service logic
  • SPDF business logic storage unit 40122 configured to store SPDF business logic
  • the A-RACF service logic storage unit 40124 is configured to store A-RACF service logic.
  • the above state management unit 4013 further includes:
  • the state machine management unit 40131 is configured to manage the state of the service control data block; the binding state management unit 40132 is configured to manage the binding relationship between the service and the rule;
  • the session connection management unit 40133 is configured to manage the service session connection.
  • the route management unit 40134 is configured to manage the route between the bearer entities.
  • the above policy and resource management function unit 402 further includes:
  • a network policy library 4022 for storing a network policy
  • An access control policy library 4023 is configured to store an access control policy
  • User subscription rule base 4024 for storing user subscription rules
  • a bearer control routing table unit 4025 configured to store bearer control routing information
  • the bearer network topology and resource unit 4026 is used to store network topology and resource information.
  • the policy or resource information stored in each unit may be provided to the service control function unit 401 according to actual needs.
  • xPDF further includes:
  • An A-RACF interface unit 4041 configured to provide an interface for interacting with the A-RACF
  • C-BGF Core-Border Gateway Function
  • the interface unit 4043 is configured to provide an interface for interacting with the PCEF.
  • the I-BGF (Interconnection-Border Gateway Function) interface unit 4044 is configured to provide an interface for interacting with the I-BGF.
  • the AF interface unit 405 can also be set in xPDF, and the AF interface unit can have different setting schemes:
  • the AF interface unit may be configured as a unified interface unit
  • AF itself can identify the access network type
  • a plurality of different AF interface units for different access network types can be set in the xPDF, and the AF interface unit 405 is set for different access network types, so that the access is determined by the AF.
  • Network type and send service requests according to different access network types
  • the service control data block generating unit 4011 establishes a service control data block after receiving the AAR message processed by the protocol processing function unit, and the service control data block is identified by the session-id, and the state of the service control data block is managed by the state machine management unit 40131.
  • the binding relationship with the rule is managed by the binding state management unit 40132, the business session is managed by the session connection management unit 40133, and the routing between the bearer controlling entities is managed by the routing management unit 40134.
  • the service request message is not an AAR message
  • the service selection and control selection unit processes according to the respective process, otherwise, according to the session-id in the message.
  • the corresponding service control data block implements bearer control according to the corresponding state machine and the received message content.
  • the policy rules, bearer topology resources, and bearer control route data required in the service control process are searched by the service selection and control unit 4014 to the policy and resource management function unit 403.
  • the traditional SPDF and the PCRP only implement the SPDF and the PCRF functions separately, and do not need to implement the service selection and control unit or the like, but the solution of the embodiment of the present invention can comprehensively implement the above SPDF and PCRF.
  • the function overcomes the drawbacks of having multiple resource admission and control bearer architectures and schemes due to multiple access types.
  • FIG. 7 it is a schematic flowchart of an embodiment of the present invention. As can be seen from the figure, the embodiment of the present invention mainly includes the following steps:
  • Step 701 The application function unit sends a service request to the policy decision function unit.
  • Step 702 The policy decision function unit identifies an access network type according to the service request, and selects a corresponding service logic to perform resource admission and control according to the access network type.
  • Step 703 If the access network type is fixed network access, perform resource admission and control according to the service-based policy and decision function SPDF process;
  • Step 704 If the access network type is a mobile network access, perform resource admission and control according to a policy and charging rule function PCRP process.
  • the foregoing service request includes an access identifier Access-Id field, and the access network type information is carried by the access identifier Access-Id.
  • the above service request may further include a username, a User-Name field, and a user identifier.
  • the Policy decision function unit identifies the corresponding access network type according to the value range of the field.
  • the process may further include: the policy decision function unit identifies the bearer control mode according to the service request, and selects a corresponding service logic according to the bearer control mode. Resource acceptance and control.
  • the control mode information of the city may be set in the service request, and the bearer control mode information is carried by the bearer control mode Tran-Control-Mode field.
  • the access network type may also be identified by the application function unit, and the service request is sent to different AF interface units according to the identified access network type, and the xPDF may be determined according to the determined access network type.
  • the processing is performed, so that it is not necessary to identify the access network type according to the service request information, and the access network type is directly identified according to the port number.
  • PCRF related processes which are divided into IP-CAN session establishment, termination and modification process classes. Each class has many processes according to different situations and scenarios, and some are PCR-specific processes, according to the first one.
  • the initiated message can identify the business process of the PCRF, and some of them are similar to the service control process in the SPDF, and can be distinguished by the method in the embodiment of the present invention. The same is true for SPDF. Some are unique processes in SPDF. According to the first initiated message, it can be identified as belonging to the SPDF process. Some are similar to the business process in the PCRF, and can be distinguished by the method in the embodiment of the present invention.
  • Step 801 The service on the AF needs to request a trigger policy and charging control.
  • Step 802 The AF generates the bearer control related service information according to the context information of the application.
  • Step 803 Send the request to the PCRF by using the AAR message.
  • Step 804 Store service-related information on the PCR
  • Step 805 If the user and the subscription related information are required, request the SPR;
  • Step 806 The SPR responds to the request, and returns information related to the user and the subscription;
  • Step 807 Identify which sessions on the IP-CAN are affected
  • Step 808 Perform a decision according to service related information, user, and subscription information by using a locally configured policy
  • Step 809 Send a control policy and a charging rule to the GW by using a RAR message.
  • Step 810 GW installs/modifies/deletes PCC rules, and executes policies
  • Step 811 The GW responds by using the RAA message.
  • Step 812 If the QoS authorization or timer needs to be updated, the GW starts to update the PDP context.
  • Step 901 The AF needs to trigger bearer control.
  • Step 902 Request resource admission control by using the AAR to the SPDF.
  • Step 903 SPDF checks authorization, determines a policy
  • Step 904 Request access resource control to the A-RACF.
  • Step 905 The A-RACF uses the local policy to determine whether to send the policy to the RCEF.
  • Step 906 If the A-RACF needs to deliver the policy to the RCEF, the AAR sends the policy to the RCEF.
  • Step 907 The RCEF responds to the policy installation situation
  • Step 908 The A-RACF responds to the SPDF response resource request result.
  • Step 909 the SPDF sends a gateway control policy (such as gating, address translation, etc.) to the BGF;
  • Step 910 the BGF responds to the request;
  • Step 911 SPDF responds to the request.
  • the resource request process initiated by the AF in the xPDF of the embodiment of the present invention includes:
  • Step 1001 AI ⁇ triggers a resource control request according to a service requirement
  • Step 1002 A sends a resource control request to the xPDF through the AAR message
  • Step 1003 The xPDF determines, according to the information in the AA message, which access resource control flow should be adopted. Cheng
  • Step 1004 If it is a PCRF process, perform bearer control according to the service flow in Figure 8. Step 1005. If it is an SPDF process, perform bearer control according to the service flow in Figure 9. It is apparent that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. As such, these modifications and variations of the present invention fall within the scope of the claims and the equivalents thereof The invention is also intended to cover such modifications and variations.

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Description

一种资源接纳控制系统及方法 技术领域
本发明涉及通信领域, 尤其涉及一种资源接纳控制系统及方法。 背景技术
ETSI TISPAN提出的资源和接纳控制子系统属于承载控制层,实现了策略 控制、 资源预留、 接纳控制, 以及接入、 汇聚、 核心网中网络地址端口 /协议 翻译, 资源和接纳控制子系统框架如图 1所示, 其中:
RACS为资源和接纳控制子系统 ( resource and admission control sub-system ) , 包括 SPDF (基于业务的策略决策功能, service-based policy decision function )单元和 A-RACF (接入资源和接纳控制功能, access-resource and admission control function )单元, AF (应用功能, application function )单 元、 NASS (网络附着子系统, network attachment sub-system ) 、 AN (接入节 点, Access node ) 、 RCEF (资源控制执行功能, resource control enforcement function )单元、 BGF (边界网关功能, border gateway fonction )单元等 RACS 相关的功能单元。
RACS是 NGN中实现策略控制、 资源预留、 接纳控制的子系统, RACS还 支持对 BGF中 NAT的控制。 RACS向应用层提供了基于策略的传输控制服务, 应用层通过 RACS实现其管辖范围内的承载资源的接納控制、 申请、 预留。
SPDF实现的功能如下:
- 检查来自 AF的请求中的信息是否和 SPDF本地定义的策略规则一致;
- 授权 AF会话中请求的资源, SPDF利用来自 AF的请求中的信息计算出 适当的授权(例如, 计算出需要授权的媒体部件数);
- 根据请求的传输能力确定 BGF和 /或 A-RACF的位置;
- 请求 A-RACF资源;
- 请求 BGF上的服务, 这些服务包括开 /闭门控, 给分组打标记, 按流分 配资源, NAT, 托管 NAT穿越, 设置上下行业务的策略, 业务测量等; - 向 AF隐藏 RACS内部的细节;
- 向 AF隐藏传输层的细节;
- 将 AF的资源请求映射到对 A-RACF和 /或 BGF的请求。
A-RACF的功能包括:
- 接纳控制;
- 网络层策略装配。
在 3GPP R7中将 3GPP R6中的 SBLP (基于业务的本地策略, service based local policy )和 FBC (基于流的计费, flow based charging )融合形成 PCC (策 略和计费控制, policy and charging control )方案, PCC方案如图 2所示, 其 中:
PCC中和策略控制相关的功能包括:
"门控,, 功能: 也就是允许或禁止一个业务数据流(SDF, service data flows )的分组包(packet )通过的能力。 不管是否已经应用了计费控制和策略 控制功能, 都可以在某个会话 ( session )上应用 "门控" 功能。
Session事件: 对于应用层事件的通知和反应能力, 这种能力可以触发新 的用户面行为。 为了应用门控功能, 必须具备 Session事件功能。 例如在门控 功能中, Session终止事件会触发相应的 packet禁止行为。
QoS (服务质量, Quality of Service )授权功能: 授权 QoS指的是针对某些 IP流的最大 QoS授权。 在一个承载(bearer ) 中存在多个 IP流时, 对这些流的 授权 QoS会被组合在一起,作为该 bearer的授权 QoS。可以通过使用 QoS相关的 签约信息来辅助具体的 QoS授权操作(包括接受、 拒绝或修改)。
QoS执行功能: PCC (策略和计费控制, policy and charging control )的 QoS 执行功能必须和 SBLP (基于业务的本地策略, service based local policy )中 PEP 的功能保持一致。 QoS执行功能包括在 bearer建立时由 GW (网关, gateway ) 对请求的 bearer QoS进行降级处理。 PCRP (策略和计费规则功能, policy and charging rules function )也可以根据某些触发条件主动地通过 Gx +参考点向 GW提供授权 QoS信息并交由其执行。
和计费相关的功能包括:
计费关联: 支持在应用层计费和承载层计费之间进行计费关联。
计费控制: 基于计费规则, IP流被标识出来, 并执行相应的计费操作。 在 此过程中也需要考虑相关的签约信息。 新的 PCC中的计费规则可能动态地由 PCR提供, 也可能预先配置在 GW中。
现有技术中已经有 TISPAN RACS规范中 SPDF功能实体的实现, 以及 3GPP PCC规范中 PCRF功能实体的实现。 SPDF和 PCRF的实现都需要向应用层 功能 AF提供接口, AF通过该接口向承载控制层申请资源。
在 RACS规范中, SPDF和 AF之间的接口为 Gq,接口,接口上的消息类型有:
AAR (授权认证请求, AA-Request ) /AAA (授权认证响应, AAA AA-Answer ) , RAR(重新授权认证请求 , re-authentication and/or re-authorization Request /RAA
(重新授权认证响应),STR (会话结束请求, Session-Termination-Request ) /STA (会话结束响应, Session-Termination- Answer ) , ASR (终止会话请求, Abort-Session-Request ) /ASA (终止会话响应 , Abort-Session-Answer )。 对于 同一个 ^舌中的所有消息中都含有相同的 < Session-Id > , < Session-Id >用来标 识同一个会话。
在 Gq,接口上, AAR消息格式被定义为 (ETSI TS 183 017 ):
<AA-Request> ::= < Diameter Header: 265, REQ, PXY>
< Session-Id > (会话标识)
{ Auth-Application-Id } (应用标识)
{ Origin-Host } (源主机)
{ Origin-Realm } (源域)
{ Destination-Realm } (目的域)
*[ Media-Component-Description ] (媒体部件描述)
*[ Flow-Grouping ] (流分組)
[ AF-Charging-Identifier ] ( AF计费标识)
[ SIP-Forking-Indication ] ( SIP分叉指示)
* [ Specific-Action ] (特定操作 )
[ User-Name ] (用户名)
[ Binding-Information ] (绑定信息)
[ Latching-Indication ] (锁定指示 )
[ Reservation-Priority ] (预留优先级 )
[ Globally-Unique-Address ] (全局统一地址)
[ Authorization-Lifetime ] (授权生命期 ) *[ Proxy-Info ] (代理信息)
*[ Route-Record ] (路由记录 )
*[AVP ] 其它属性值对 ( AVP, attribute-value pair )
在 PCC方案中, PCRF和 AF之间的接口叫 Rx接口, 接口上的消息类型有: AAR/AAA, RAR/RAA, STR/STA, ASR/ASA。对于同一个会话中的所有消息中 都含有相同的 < Session-Id >, < Session-Id >用来标识同一个会话。
R接口的消息的格式定义为 (3GPP TS 29.214 ) :
<AA-Request>:: = < Diameter Header: 265, REQ, PXY >
< Session-Id > (会话标识 )
{ Auth-Application-Id } (应用标识)
{ Origin-Host } (源主机)
{ Origin-Realm } (源域)
{ Destination-Realm } (目的域)
*[ Media-Component-Description ] (媒体部件描述 )
*[ Flow-Grouping ] (流分组)
[ AF-Charging-Identifier ] ( AF计费标识)
[ SIP-Forking-Indication ] ( SIP分叉指示)
*[ Specific-Action ] (特定操作 )
*[ Subscription-ID ]订阅标识
*[ Proxy-Info ] (代理信息)
*[ Route-Record ] (路由记录)
*[AVP ]其它属性值对 ( AVP, attribute-value pair ) 在 FMC (固定和移动通信融合, f ixed-mobi le convergence )应用中, 包 含了 xDSL固定接入, 以及 UMTS RAN接入、 wiMAX接入、 W - LAN接入等多种移动 接入方式, 按照现有的实现方案, 需要 SPDF功能实体来支持固定接入方式下 的资源和接纳控制, PCRF功能来支持移动接入方式下的资源和接纳控制, 而 采用两套承载控制层实体, 不利于网络的实施和维护, 也不便于 AF实现承载 控制。 发明内容
本发明实施例在于提供一种资源接纳控制系统及方法, 用以解决现有技 术中存在的采用两套 载控制层实体, 带来的组网和维护复杂的问题。
一种资源接纳控制系统, 包括:
应用功能单元接口单元, 用于接收应用功能单元发送的业务请求; 策略决策功能单元, 用于根据应用功能单元接口单元接收的业务请求, 识别接入网类型后, 根据识別的接入网类型选择对应的业务逻辑进行资源接 纳和控制。
一种资源接纳控制方法, 包括:
策略决策功能单元接收应用功能单元发送的业务请求;
策略决策功能单元根据所述业务请求识别接入网类型, 并根据所述接入 网类型选择对应的业务逻辑进行资源接纳和控制。
本发明有益效果如下:
采用本发明实施例的技术方案, 无论是向 TISPAN中定义的固定接入网, 还是向 3GPP中定义的无线接入网请求资源, 都由策略决策功能单元 xPDF识 别接入网类型, 并选择对应的业务逻辑进行资源接纳和控制, xPDF向 AF隐藏 接入网的细节, 简化了组网方案, 并使系统维护变得筒单方便。 附图说明
图 1 为现有技术中基于固定网接入类型的资源和接纳控制子系统及相关 网络环境的架构示意图;
图 2 为现有技术中基于移动网接入类型的资源和接纳控制子系统及相关 网络环境的架构示意图;
图 3为本发明实施例方案中的资源接纳控制系统在网络中的连接示意图; 图 4为本发明实施例方案中 xPDF的结构示意图;
图 5为本发明实施例方案中 xPDF的进一步细化结构示意图;
图 6为本发明实施例方案中业务控制功能单元的细化结构示意图; 图 7为本发明实施例的流程示意图;
图 8为 PCR 中 AF发起的会话建立流程示意图;
图 9为 SPDF中 AF发起的资源请求流程示意图;
图 10为采用本发明实施例方案 xPDF中 AF发起的资源请求流程示意图。 具体实施方式
下面结合说明书附图来说明本发明的具体实施方式。
在固定和移动通信融合 ( FMC fixed-mobile convergence )场景下,业务层 需要通过承载控制同时控制固定接入网和移动接入网, 因此需要支持固定接 入方案要和支持移动接入方案融合, 使承载控制层向应用层提供统一的接口, 向应用功能屏蔽不同接入方式的差别, 屏蔽对各种接入方式的不同控制方式, 屏蔽固定接入方案移动接入方案在资源控制、 接纳控制、 计费方面的差别, 并且能够兼容以前的资源控制和接纳控制方式。 这样就解决了现有 FMC应用 中需要部署两套承载控制功能实体带来的组网和维护复杂的问题。
如图 3所示, 是本发明实施例方案应用时的一个系统架构示意图, 该方案 将 SPDF和 PCRF融合, 融合后的资源接纳控制系统通过统一的 Rx+接口向应用 层功能提供资源控制接口。
为方便起见, 实施例中以 xPDF表示实现 SPDF和 PRCF功能的策略决策功 能单元, 为延续现有方案, 其和业务层 AF的接口为 Rx+, Rx+采用 diameter协 议。
Rx+接口的 AAR消息定义如下:
<AA-Request> ::= < Diameter Header: 265, REQ, PXY>
< Session-Id > (会话标识 )
{ Auth-Application-Id } (应用标识)
{ Origin-Host } (源主机)
{ Origin-Realm } (源域)
{ Destination-Realm } (目的域)
[ Access-Id ] (接入方式识别)
[ Tran- Control-Mode ] (承栽控制模式)
* [ Media-Component-Description ] (媒体部件描述 )
*[ Flow-Grouping ] (流分組)
[ AF-Charging-Identifier ] ( AF计费标识)
[ SIP-Forking-Indication ] ( SIP分叉指示)
*[ Specific-Action ] (特定操作 )
[ User-Name ] (用户名)
[ Binding-Information ] (绑定信息 )
[ Latching-Indication ] (锁定指示 )
[ Reservation-Priority ] (预留优先级)
[ Globally-Unique-Address ] (全局统一地址)
[ Authorization-Lifetime ] (授权生命期 )
* [ Proxy-Info ] (代理信息)
* [ Route-Record ] (路由记录) *[AVP ] 其它属性值对(AVP, attribute-value pair )
与现有技术一样, 属于同一个会话的消息的 Session-Id信息相同。 本发明 实施例需要 xPDF能从建立会话的第一个消息 -AAR消息中识别出是选择控 制固定接入网还是选择移动接入网,后续 xPDF就能根据后续消息中 Session-Id 信息正确选择 SPDF或 PCRF的流程实现资源的预留、接纳控制和策略控制, 因 此除 AAR消息, Rx+接口上的其它消息 AAA, RAR/RAA, STR/STA, ASR/ASA 保留和 Gq'和 Rx接口的定义不变。 用来标识和识别接入网的类型 , 它的一种定义方式如下。
xDSL接入, 值可以定义为 0;
GGSN移动接入网, 值可以定义为 1;
WLA 固定接入网, 值可以定义为 2;
WL AN移动接入网 , 值可以定义为 3;
WiMAX固定接入网, 值可以定义为 4;
WiMAX移动接入网 , 值可以定义为 5。
通过对枚举值的扩展还可以定义其它的接入网类型, 而在 Rx+中增加 Access-Id属性值的目的是 xPDF在每次会话开始时就能根据 Access-W字段的赋 值识别出本次业务是要控制固定接入网还是移动接入网。
本发明实施例方案中还可以将 Tran-Control-Mode字段定义成枚举类型的 AVP ( AVP类型码可以待分配)。 Tran-Control- Mode字段用来指示承载控制模 式,承载控制模式用来指示 xPDF用哪种方式执行承载控制,例如是推送( push ) 方式还是拉 ( pull )方式, 是 on-path方式还是 off-path方式。
在特定的场景下, AAR中的 User-Name字段、 Subscription-ID字段、 Globally-Unique-Address字段的属性值也可以用来识别接入网类型, 比如可以 利用上述字段的取值范围和接入网类型的对应关系来识别接入网类型。 如果 User-Name属性值、 Subscription-ID属性值、 或字段 Globally-Unique- Address属 性值能识别出不同的接入网类型, 将上述字段的取值范围和接入网类型的对 应关系组织成如下的表格:
Figure imgf000011_0001
该表 1的第一栏为对应字段的具体赋值, 第二栏为该具体赋值所对应的接 入网类型。 在实际应用中, xPDF用 Rx+接口上 AAR消息中的上述各字段的具 体取值查上述的表, 如果查找到接入网类型, 则可以决定采用对应的方式进 行接入网资源控制。
xPDF的一种实现方案如图 4所示,其实现主要包括业务控制功能单元 401、 策略和资源管理功能单元 402、 协议处理功能单元 403。
其中业务控制功能单元 401从协议处理功能单元 403接收到来自 AF的消息 后,首先检查是否为 AAR消息,对 AAR消息检查消息中是否包含 access-id属性, 如果包括则可以根据 access-id确定接入网类型,从而选择相应的业务逻辑进行 资源和接纳控制。
如果上述消息中不包含 access-id属性, 则继续检查消息中是否存在
User-Name、 Subscription-ID > Globally-Unique- Address属性值, 如果包括则才艮 据配置数据查表 1得到对应的接入网类型, 并选择相应的业务逻辑进行资源和 接纳控制。 如果不能查到接入网类型则按照缺省的控制方式进行处理, 则以 缺省的控制方式处理, 包括向 AF返回出错消息。
如果上述消息中包含 Tran-Control- Mode字段, 则 xPDF还根据该字段内容 对应的承载控制模式进行资源和接纳控制。
上述过程中, 策略和资源管理功能单元 402向业务控制功能单元 401提供 策略和资源信息。 如图 5所示,是该 xPDF的进一步细化结构,可见上述协议处理功能单元 403 进一步包括下述内容:
Diameter协议(新一代的 AAA协议)接口及适配单元 4031 , 用于处理 Diameter协议;
COPS ( Common Open Policy Service,公共开放策略服务)协议接口及适 配单元 4032, 用于处理 COPS协议;
H.248协议接口及适配单元 4033 , 用于处理 H.248协议;
SOAP ( simple object access protocol,筒单对象访问协议 )协议接口及适配 单元 4034, 用于处理 SOAP协议。
上述业务控制功能单元 401进一步包括:
业务控制数据块生成单元 4011 , 用于在接收协议处理单元处理后的业务 请求后, 生成业务控制数据块, 业务控制数据块由 <session-id =?识, 对本次 业务倚求处理进行记录, 其状态由状态管理单元 4013管理。
上述方案中, 业务控制功能单元 401还可以包括:
业务逻辑存储单元 4012, 用于存储业务逻辑;
状态管理单元 4013, 用于对业务状态进行管理;
业务选择和控制单元 4014, 根据策略和资源管理功能单元提供的策略和 资源信息对业务请求进行选择和控制。
如图 6所示, 上述业务逻辑存储单元 4012进一步包括:
PCRF业务逻辑存储单元 40121 , 用于存储 PCRF业务逻辑;
SPDF业务逻辑存储单元 40122, 用于存储 SPDF业务逻辑;
PDF (策略决策功能, policy decision function )业务 i£辑存储单元 40123 , 用于存储 PDF业务逻辑;
A-RACF业务逻辑存储单元 40124, 用于存储 A-RACF业务逻辑。
上述状态管理单元 4013进一步包括:
状态机管理单元 40131, 用于对业务控制数据块的状态进行管理; 绑定状态管理单元 40132, 用于对业务和规则的绑定关系进行管理; 会话连接管理单元 40133 , 用于对业务会话连接进行管理; 路由管理单元 40134, 用于对承载实体间的路由进行管理。
上述策略和资源管理功能单元 402进一步包括:
业务策略库 4021 , 用于存储业务策略;
网络策略库 4022 , 用于存储网絡策略;
接入控制策略库 4023 , 用于存储接入控制策略;
用户订阅规则库 4024 , 用于存储用户订阅规则;
承载控制路由表单元 4025, 用于存储承载控制路由信息;
承载网拓朴和资源单元 4026, 用于存储网络拓朴和资源信息。
上述各单元内存储的策略或资源信息, 可以依据实际需要而提供给业务 控制功能单元 401。
上述方案中, xPDF进一步包括:
A-RACF接口单元 4041 , 用于提供与 A-RACF交互的接口;
C-BGF ( Core-Border Gateway Function, 核心边界网关功能)接口单元 4042, 用于提供与 C-BGF交互的接口;
PCEF ( Policy and Charging Enforcement Function, 策略和计费执行功能) 接口单元 4043 , 用于提供与 PCEF交互的接口;
I-BGF ( Interconnection-Border Gateway Function, 互通边界网关功能)接 口单元 4044, 用于提供与 I-BGF交互的接口。
上述方案中, 针对 AF, 还可以在 xPDF设置 AF接口单元 405, 该 AF接 口单元可以有不同的设置方案:
如果 xPDF 通过 AF 发送的业务请求中携带的 Session-Id信息或 Tran-Control-Mode字段信息来识别接入网类型信息, 则该 AF接口单元可以 设置为统一的接口单元;
如果 AF 自身可以识别接入网类型,则可以在 xPDF设置针对不同接入网 类型的多个不同的 AF接口单元, 该 AF接口单元 405针对不同的接入网类型 设置,这样由 AF判断接入网类型, 并根据不同的接入网类型将业务请求发送 到不同的 AF接口单元, 不必根据业务请求信息而识别接入网类型了, 而由 xPDF直接根据不同的端口号识别接入网类型。
上述方案, 对来自 AF的业务清求处理如下:
业务控制数据块生成单元 4011收到协议处理功能单元处理的 AAR消息后 建立一个业务控制数据块, 业务控制数据块由 session-id标识, 业务控制数据 块的状态由状态机管理单元 40131管理, 业务和规则的绑定关系由绑定状态管 理单元 40132管理, 业务会话由会话连接管理单元 40133管理, 承载控制实体 间的路由由路由管理单元 40134管理。
上述业务请求消息如果不是 AAR消息, 如果根据该消息可以识别出属于 SPDF和 PCRF各自专有的业务流程,则业务选择和控制选择单元按照各自的流 程进行处理, 否则根据消息中的 session-id找到对应的业务控制数据块, 根据 相应状态机和接收的消息内容实现承载控制。
业务控制过程中需要的策略规则、 承载拓朴资源、 承载控制路由数据由 业务选择和控制单元 4014向策略和资源管理功能单元 403查找。
由此可见, 与现有方案相比, 传统的 SPDF和 PCRP只单独实现 SPDF和 PCRF功能, 不需要实现业务选择和控制单元或者类似的功能, 而本发明实施 例方案可以综合实现上述 SPDF和 PCRF功能,克服了由于多种接入类型导致具 有多种资源接纳和控制承载构架和方案的弊端。
如图 7所示, 是本发明实施例的一个流程示意图, 从图中可见, 本发明实 施例主要包括以下步驟:
步驟 701、 应用功能单元向策略决策功能单元发送业务请求;
步骤 702、 策略决策功能单元根据所述业务请求识别接入网类型, 并根据 所述接入网类型, 选择对应的业务逻辑进行资源接纳和控制。
步錄 703、 如果所述接入网类型为固定网接入, 则按照基于业务的策略和 决策功能 SPDF流程进行资源接纳和控制;
步驟 704、 如果所述接入网类型为移动网接入, 则按照基于策略和计费规 则功能 PCRP流程进行资源接纳和控制。 上述的业务请求中, 包含接入标识 Access-Id字段 , 通过所述接入标识 Access-Id携带所述接入网类型信息。
上述业务请求中, 还可以包含用户名 User-Name字段、 用户标识
Subscription- ID字段、或全球统一地址 Globally-Unique- Address字段,所述策略 决策功能单元根据该字段的取值范围, 识别对应的接入网类型。
上述方案中, 如果所述业务请求种还携带承载控制模式, 则该流程中还 可以包括策略决策功能单元根据所述业务请求识别承载控制模式, 并根据所 述承载控制模式选择对应的业务逻辑进行资源接纳和控制。
该城在控制模式信息可以设置于所述业务请求中, 通过承载控制模式 Tran-Control- Mode字段携带承载控制模式信息。
上述方案中, 还可以由应用功能单元来识别接入网类型, 并^^据识别后 的接入网类型将业务请求发送至不同的 AF接口单元, xPDF即可根据该确定的 接入网类型进行处理, 这样就不必根据业务请求信息而识别接入网类型了, 而直接才据端口号识别接入网类型。
在实际应用中, PCRF相关的流程有很多, 分为 IP-CAN会话建立、终止和 修改流程类, 每类中根据不同的情况和场景有很多流程, 有些是 PCR 特有的 流程,根据第一个发起的消息就可以识别出是 PCRF的业务流程,有些和 SPDF 中的业务控制流程相似, 可以用本发明实施例方案中的方法区分出来。 SPDF 也一样, 一些是 SPDF中特有的流程, 根据第一个发起的消息就可以识别出属 于 SPDF流程,有些和 PCRF中的业务流程类似,可以用本发明实施例方案中的 方法区分。
如图 8所示, 是 PCRF中 AF发起的会话建立流程, 包括:
步骤 801、 AF上业务需要请求触发策略和计费控制;
步骤 802、 AF根据应用的上下文信息生成承载控制相关的业务信息; 步驟 803、 通过 AAR消息将请求发向 PCRF;
步驟 804、 在 PCR 上保存业务相关的信息;
步驟 805、 如果需要用户和订购相关的信息, 则向 SPR请求; 步骤 806、 SPR响应请求, 返回用户和订购相关的信息;
步骤 807、 识别影响到哪些 IP-CAN上的会话;
步骤 808、 使用本地配置的策略, 根据业务相关的信息、 用户和订购信息 进行决策;
步骤 809、 通过 RAR消息将控制策略和计费规则下发到 GW;
步驟 810、 GW安装 /修改 /删除 PCC规则, 并执行策略;
步骤 811、 GW通过 RAA消息响应;
步骤 812、 如果需要更新 QoS授权或定时器, GW启动更新 PDP上下文; 步驟 813、 PCRF响应 AAA消息给 AF。
如图 9所示, 是 SPDF中 AF发起的资源请求流程, 包括:
步骤 901、 AF上需要触发承载控制;
步驟 902、 通过 AAR向 SPDF请求资源接纳控制;
步驟 903、 SPDF检查授权, 确定策略;
步骤 904、 向 A-RACF请求接入资源控制;
步骤 905、 A-RACF使用本地策略, 确定是否要向 RCEF下发策略; 步驟 906、 A-RACF如果需要向 RCEF下发策略, 通过 AAR向 RCEF下发策 略;
步骤 907、 RCEF响应策略安装情况;
步骤 908、 A-RACF向 SPDF响应接入资源请求结果;
步驟 909、 SPDF向 BGF下发网关控制策略(比如门控、 地址转换等); 步骤 910、 BGF响应请求;
步骤 911、 SPDF响应请求。
如图 10所示, 是采用本发明实施例方案 xPDF中 AF发起的資源请求流程, 包括:
步骤 1001、 AI^艮据业务需求触发资源控制请求;
步骤 1002、 A 通过 AAR消息下发资源控制请求给 xPDF;
步骤 1003、 xPDF根据 AA 消息中信息判断应该采用哪种接入资源控制流 程;
步骤 1004、 如果是 PCRF流程, 则按照图 8中业务流程执行承载控制; 步骤 1005、 如果如果是 SPDF流程, 则按照图 9中业务流程执行承载控制。 显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的^ "神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种资源接纳控制系统, 其特征在于, 包括:
应用功能单元接口单元, 用于接收应用功能单元发送的业务请求; 策略决策功能单元, 用于根据应用功能单元接口单元接收的业务请求 , 识别接入网类型后, 才艮据识别的接入网类型选择对应的业务逻辑进行资源接 纳和控制。
2、 如权利要求 1所述的系统, 其特征在于, 所述策略决策功能单元进一 步包括:
协议处理功能单元, 用于对应用功能单元接口单元接收的业务请求进行 协议处理;
业务控制功能单元, 用于接收协议处理单元处理后的业务请求, 识别接 入网类型, 选择对应的业务逻辑进行资源接纳和控制;
策略和资源管理功能单元, 用于向业务控制功能单元提供策略和资源信 息。
3、 如权利要求 2所述的系统, 其特征在于, 所述协议处理功能单元进一 步包括下述单元之一或任意组合:
Diameter协议接口及适配单元, 用于根据 Diameter协议进行处理; COPS协议接口及适配单元, 用于根据 COPS协议进行处理;
H.248协议接口及适配单元, 用于根据 H.248协议进行处理;
SOAP协议接口及适配单元, 用于根据 SOAP协议进行处理。
4、 如权利要求 2所述的系统, 其特征在于, 所述业务控制功能单元进一 步包括:
业务控制数据块生成单元, 用于在接收协议处理单元处理后的业务请求 后, 生成业务控制数据块。
5、 如权利要求 4所述的系统, 其特征在于, 所述业务控制功能单元进一 步包括下述单元之一或任意组合: 业务逻辑存储单元, 用于存储业务逻辑;
状态管理单元, 用于对业务状态进行管理;
业务选择和控制单元, 用于接收协议处理单元处理后的业务请求, 识别 接入网类型, 根据策略和资源管理功能单元提供的策略和资源信息对所述业 务请求进行选择和控制。
6、 如权利要求 5所述的系统, 其特征在于, 所述业务逻辑存储单元包括 下迷单元之一或任意组合:
PCRF业务逻辑存储单元, 用于存储 PCRF业务逻辑;
SPDF业务逻辑存储单元, 用于存储 SPDF业务逻辑;
PDF业务逻辑存储单元 , 用于存储 PDF业务逻辑;
A-RACF业务逻辑存储单元, 用于存储 A-RACF业务逻辑。
7、 如权利要求 5所迷的系統, 其特征在于, 所述状态管理单元包括下述 单元之一或任意組合:
状态机管理单元, 用于对业务控制数据块的状态进行管理;
绑定状态管理单元, 用于对业务和规则的绑定关系进行管理;
会话连接管理单元, 用于对业务会话连接进行管理;
路由管理单元, 用千对承载实体间的路由进行管理。
8、 如权利要求 2所述的系统, 其特征在于, 所述策略和资源管理功能单 元包括下述单元之一或任意组合:
业务策略库, 用于存储业务策略;
网络策略库, 用于存储网络策略;
接入控制策略库, 用于存储接入控制策略;
用户订阅规则库, 用于存储用户订阅规则;
承载控制路由表单元, 用于存储承载控制路由信息;
承载网拓朴和资源单元, 用于存储网络拓朴和资源信息。
9、 如权利要求 1所述的系统, 其特征在于, 所述的应用功能接口单元为 多个, 用于接收应用功能单元发送的针对不同接入网类型的业务请求。
10、 如权利要求 1 所述的系统, 其特征在于, 所述策略决策功能单元进 一步包括下述单元之一或任意组合:
A-RACF接口单元, 用于提供和 A-RACF的接口;
C-BGF接口单元, 用于提供和 C-BGF的接口;
PCEF接口单元, 用于提供和 PCEF的接口;
I-BGF接口单元, 用于提供和 I-BGF的接口。
11、 一种资源接纳控制方法, 包括:
策略决策功能单元接收应用功能单元发送的业务请求;
策略决策功能单元根据所述业务请求识别接入网类型 , 并根据所述接入 网类型选择对应的业务逻辑进行资源接纳和控制。
12、 如权利要求 11所述的方法, 其特征在于, 所述的业务请求中, 携带 有接入类型信息。
13、 如权利要求 12所述的方法, 其特征在于, 所述业务清求中, 包含接 入标识 Access-Id字段, 通过所述接入标识 Access- Id携带所述接入网类型信
14、 如权利要求 12所述的方法, 其特征在于, 所述业务请求中, 包含用 户名 User-Name 字段、 用户标识 Subscription-ID 字段或全球统一地址 Globally-Unique-Address字段, 所述策略决策功能单元根据用户名 User-Name 字段、用户标识 Subscription-ID字段或全球统一地址 Globally-Unique-Address 字段的属性值, 识别对应的接入网类型。
15、 如权利要求 11所述的方法, 其特征在于, 根据所述接入网类型选择 对应的业务逻辑进行资源接纳和控制, 包括:
如果所述接入网类型为固定网接入, 则按照基于业务的策略和决策功能 SPDF流程进行资源接纳和控制;
如果所述接入网类型为移动网接入, 则按照基于策略和计费规则功能 PCR 流程进行资源接纳和控制。
16、 如权利要求 11所述的方法, 其特征在于, 还包括: 策略决策功能单元根据所述业务请求识别承载控制模式, 并根据所述承 载控制模式选择对应的业务逻辑进行资源接纳和控制。
17、 如权利要求 16所述的方法, 其特征在于, 所述业务请求中, 包含承 载控制模式 Tran-Control- Mode字段, 通过所述承载控制模式 Tran-Control- Mode携带承载控制模式信息。
18、 如权利要求 11所述的方法, 其特征在于, 所述策略决策功能单元根 据所述业务请求识别接入网类型的步驟具体为: 策略决策功能单元通过应用 功能单元发送的针对不同接入网类型的业务请求识别接入网类型。
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